shader gear

.gistup

gistup

0.glsl

uniform vec2 u_resolution;
uniform float u_time;

void main() {
  vec2 st = gl_FragCoord.xy/u_resolution.xy;
  gl_FragColor=vec4(st.x,st.y,0.0,1.0);
}

1.glsl

#ifdef GL_ES
precision highp float;
#endif

#define PI 3.14159265359


uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

// Plot a line on Y using a value between 0.0-1.0
float plot(vec2 st, float pct){
  return  smoothstep( pct-0.02, pct, st.y) - 
          smoothstep( pct, pct+0.02, st.y);
}

void main() {
	vec2 st = gl_FragCoord.xy/u_resolution;

	float mx = u_mouse.x/u_resolution.x;
  // float y = pow(st.x, abs(sin(mx*4.0 + 0.2)));
  float y = sin(st.x*mx*100.0 + u_time)*.5 + .5;
  // float y = step(0.5,st.x*1.0);;
  // float y = smoothstep(0.2,0.5,st.x) - smoothstep(0.5,0.8,st.x);

  vec3 color = vec3(y);
    
  // Plot a line
  float pct = plot(st,y);
  color = (1.0-pct)*color+pct*vec3(0.0,1.0,0.0);
    
	gl_FragColor = vec4(color,1.0);
}

10.glsl

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

void main(){
	vec2 st = gl_FragCoord.xy/u_resolution;
    float pct = 0.0;

    // a. The DISTANCE from the pixel to the center
    pct = distance(st, vec2(0.5));
    
    // vec3 color = vec3(smoothstep(.8, .9, 1.0 - pct));
    vec3 color = vec3(step(.1*sin(u_time) + .4,pct));

	gl_FragColor = vec4( color, 1.0 );
}

11.glsl

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

void main(){
	vec2 st = gl_FragCoord.xy/u_resolution;
    float pct = 0.0;

    // a. The DISTANCE from the pixel to the center
    pct = distance(st,vec2(0.4)) * distance(st,vec2(0.6));

    
    // vec3 color = vec3(smoothstep(.8, .9, 1.0 - pct));
    vec3 color = vec3(step(cos(u_time*.8)*.05 + .06, pct));


    pct = distance(st, vec2(cos(u_time)*.5 + .5, sin(u_time)*.5 + .5));

    color = color*vec3(step(.1, pct));

	gl_FragColor = vec4( color, 1.0 );
}

12.glsl

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

void main(){
    vec2 st = gl_FragCoord.xy/u_resolution.xy;
    vec3 color = vec3(0.0);

    vec2 pos = vec2(0.5)-st;

    float r = length(pos)*2.0;
    float a = atan(pos.y,pos.x) + u_time/2.2;

    float f = cos(a*3.);
    f = abs(cos(a*3.));
    f = abs(cos(a*2.5))*.5+.3;
    f = abs(cos(a*12.)*sin(a*3.))*.8+.1;
    f = smoothstep(-.5,1., cos(a*10.))*0.2+0.5;

    color = vec3( 1.-smoothstep(f,f+0.02,r) );

    // a. The DISTANCE from the pixel to the center
    float pct = distance(st, vec2(0.5));    
    color = color*floor(pct + .8);

    gl_FragColor = vec4(color, 1.0);
}

13.glsl

#ifdef GL_ES
precision mediump float;
#endif

#define PI 3.14159265359
#define TWO_PI 6.28318530718

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

// Reference to
// http://thndl.com/square-shaped-shaders.html

void main(){
  vec2 st = gl_FragCoord.xy/u_resolution.xy;
  st.x *= u_resolution.x/u_resolution.y;
  vec3 color = vec3(0.0);
  float d = 0.0;

  // Remap the space to -1. to 1.
  st = st *2.-1.;

  // Number of sides of your shape
  float N = 3.0 + u_time/1.0;

  // Angle and radius from the current pixel
  float a = atan(st.x,st.y)+PI;
  float r = TWO_PI/N;
  
  // Shaping function that modulate the distance
  d = cos(floor(.5+a/r)*r-a)*length(st);

  color = vec3(1.0-smoothstep(.4,.41,d));
  // color = vec3(d);

  gl_FragColor = vec4(color,1.0);
}

2.glsl

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

void main() {
	vec2 st = gl_FragCoord.xy/u_resolution;
	float mx = u_mouse.x/u_resolution.x;
	float my = u_mouse.y/u_resolution.y;
	gl_FragColor = vec4(st.x,my,mx,1.0);
}

3.glsl

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform float u_time;

vec3 colorA = vec3(0.149,0.141,0.912);
vec3 colorB = vec3(1.000,0.833,0.224);
vec3 colorC = vec3(.000,0.533,0.224);

void main() {
    vec3 color = vec3(0.0);

    float pct0 = sin(u_time/3.3)*.5 + .5;
    float pct1 = sin(u_time/9.1)*.5 + .5;
    float pct2 = sin(u_time/6.1)*.5 + .5;

    // Mix uses pct (a value from 0-1) to 
    // mix the two colors
    color = mix(colorA, colorB, vec3(pct0, pct1, pct2)); 

    gl_FragColor = vec4(color,1.0);
}

4.glsl

#ifdef GL_ES
precision mediump float;
#endif

#define PI 3.14159265359

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

vec3 orange = vec3(236.0,62.0,29.0)/255.0; 
vec3 blue   = vec3(79.0,102.0,177.0)/255.0; 
vec3 yellow = vec3(248.0,227.0,111.0)/255.0; 

float plot (vec2 st, float pct){
  return  smoothstep( pct-0.01, pct, st.y) - 
          smoothstep( pct, pct+0.01, st.y);
}

void main() {
    vec2 st = gl_FragCoord.xy/u_resolution.xy;
    vec3 color = vec3(0.0);

    vec3 pct = vec3(st.x)*cos(u_time/4.0);
    
    // pct.r = smoothstep(0.0,1.0, st.x);
    // pct.g = sin(st.x*PI);
    // pct.b = pow(st.x,0.5);

    color = mix(blue, orange, pct);

    color = mix(color, yellow, st.y*sin(u_time/5.0) + sin(u_time/10.0)/10.0);

    // Plot transition lines for each channel
    // color = mix(color,vec3(1.0,0.0,0.0),plot(st,pct.r));
    // color = mix(color,vec3(0.0,1.0,0.0),plot(st,pct.g));
    // color = mix(color,yellow,plot(st,pct.b));

    gl_FragColor = vec4(color,1.0);
}

5.glsl

#ifdef GL_ES
precision mediump float;
#endif

#define PI 3.14159265359

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

vec3 orange = vec3(236.0,62.0,29.0)/255.0; 
vec3 blue   = vec3(79.0,102.0,177.0)/255.0; 
vec3 yellow = vec3(248.0,227.0,111.0)/255.0; 
vec3 green = vec3(0.,1.0,0.0);

float plot (vec2 st, float pct){
  return  smoothstep( pct-0.01, pct, st.y) - 
          smoothstep( pct, pct+0.01, st.y);
}

void main() {
    vec2 st = gl_FragCoord.xy/u_resolution.xy;
    vec3 color = vec3(0.0);

    vec3 pct = vec3(st.x)*cos(u_time/4.0);

    color = mix(color, orange, step(.2, st.x));
    color = mix(color, blue, step(.4, st.x));
    color = mix(color, yellow, step(.6, st.x));
    color = mix(color, green, step(.8, st.x));



    gl_FragColor = vec4(color,1.0);
}

6.glsl

#ifdef GL_ES
precision mediump float;
#endif

#define TWO_PI 6.28318530718

uniform vec2 u_resolution;
uniform float u_time;
uniform vec2 u_mouse;

vec3 rgb2hsb( in vec3 c ){
    vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
    vec4 p = mix(vec4(c.bg, K.wz), 
                 vec4(c.gb, K.xy), 
                 step(c.b, c.g));
    vec4 q = mix(vec4(p.xyw, c.r), 
                 vec4(c.r, p.yzx), 
                 step(p.x, c.r));
    float d = q.x - min(q.w, q.y);
    float e = 1.0e-10;
    return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), 
                d / (q.x + e), 
                q.x);
}

//  Function from Iñigo Quiles 
//  https://www.shadertoy.com/view/MsS3Wc
vec3 hsb2rgb( in vec3 c ){
    vec3 rgb = clamp(abs(mod(c.x*6.0+vec3(0.0,4.0,2.0),
                             6.0)-3.0)-1.0, 
                     0.0, 
                     1.0 );
    rgb = rgb*rgb*(3.0-2.0*rgb);
    return c.z * mix(vec3(1.0), rgb, c.y);
}

void main(){
    vec2 st = gl_FragCoord.xy/u_resolution;
    vec3 color = vec3(0.0);

    // Use polar coordinates instead of cartesian
    vec2 toCenter = vec2(0.5)-st;
    float angle = atan(toCenter.y,toCenter.x);
    float radius = length(toCenter)*2.0;
  
    // Map the angle (-PI to PI) to the Hue (from 0 to 1)
    // and the Saturation to the radius
    angle = angle/TWO_PI + .5;

    angle = pow(angle, u_mouse.x/u_resolution.x*100.0 + .5);
    angle = mod(angle  + u_time/10.0 + u_mouse.y/u_resolution.y*10.0 + .5, 1.0);

    color = hsb2rgb(vec3(angle,radius,1.0));

    gl_FragColor = vec4(color,1.0);
}

7.glsl

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

void main(){
    vec2 st = gl_FragCoord.xy/u_resolution.xy;
    vec3 color = vec3(0.0);
    
    // bottom-left
    vec2 bl = step(vec2(0.1),st); 
    float pct = bl.x * bl.y;

    // top-right 
    vec2 tr = smoothstep(vec2(0.1),vec2(.3), 1.0-st);
    pct *= tr.x * tr.y;

    vec2 bbl = step(vec2(0.95), 1.0-st); 
    pct = max(pct, bbl.x);
    pct = max(pct, bbl.y);

    vec2 ttr = step(vec2(0.95), st); 
    pct = max(pct, ttr.x);
    pct = max(pct, ttr.y);


    color = vec3(pct);

    gl_FragColor = vec4(color,1.0);
}

8.glsl

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

void main(){
	vec2 st = gl_FragCoord.xy/u_resolution;
    float pct = 0.0;
    float pct2 = 0.0;

    // a. The DISTANCE from the pixel to the center
    pct = distance(st,vec2(0.5));

    // b. The LENGTH of the vector 
    //    from the pixel to the center 
    vec2 toCenter = vec2(0.5)-st;
     pct = length(toCenter);

    // c. The SQUARE ROOT of the vector 
    //    from the pixel to the center 
    vec2 tC = vec2(6.5)-st*10.0;
    pct = sqrt(tC.x*tC.x+tC.y*tC.y);

    vec2 tC2 = vec2(6.5)-st*10.5;
    pct2 = sqrt(tC2.x*tC2.x+tC2.y*tC2.y);

    vec3 color = vec3(floor(pct), .3, .4)*vec3(sin(pct2*u_time+ u_time*3.0));

	gl_FragColor = vec4( color, 1.0 );
}

9.glsl

#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;

void main(){
	vec2 st = gl_FragCoord.xy/u_resolution;
    float pct = 0.0;

    // a. The DISTANCE from the pixel to the center
    pct = distance(st, vec2(0.5));
    
    vec3 color = vec3(step(0.02, pct));
    color = color*vec3(1.0, 1.0, pow(pct, .2));
    // vec3 color = vec3(floor(pct + .1), .3, .4);

	gl_FragColor = vec4( color, 1.0 );
}

d3.js

!function() {
  var d3 = {
    version: "3.5.5"
  };
  var d3_arraySlice = [].slice, d3_array = function(list) {
    return d3_arraySlice.call(list);
  };
  var d3_document = this.document;
  function d3_documentElement(node) {
    return node && (node.ownerDocument || node.document || node).documentElement;
  }
  function d3_window(node) {
    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
  }
  if (d3_document) {
    try {
      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
    } catch (e) {
      d3_array = function(list) {
        var i = list.length, array = new Array(i);
        while (i--) array[i] = list[i];
        return array;
      };
    }
  }
  if (!Date.now) Date.now = function() {
    return +new Date();
  };
  if (d3_document) {
    try {
      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
    } catch (error) {
      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
      d3_element_prototype.setAttribute = function(name, value) {
        d3_element_setAttribute.call(this, name, value + "");
      };
      d3_element_prototype.setAttributeNS = function(space, local, value) {
        d3_element_setAttributeNS.call(this, space, local, value + "");
      };
      d3_style_prototype.setProperty = function(name, value, priority) {
        d3_style_setProperty.call(this, name, value + "", priority);
      };
    }
  }
  d3.ascending = d3_ascending;
  function d3_ascending(a, b) {
    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
  }
  d3.descending = function(a, b) {
    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
  };
  d3.min = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
    }
    return a;
  };
  d3.max = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
    }
    return a;
  };
  d3.extent = function(array, f) {
    var i = -1, n = array.length, a, b, c;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = c = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = c = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    }
    return [ a, c ];
  };
  function d3_number(x) {
    return x === null ? NaN : +x;
  }
  function d3_numeric(x) {
    return !isNaN(x);
  }
  d3.sum = function(array, f) {
    var s = 0, n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
    } else {
      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
    }
    return s;
  };
  d3.mean = function(array, f) {
    var s = 0, n = array.length, a, i = -1, j = n;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
    } else {
      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
    }
    if (j) return s / j;
  };
  d3.quantile = function(values, p) {
    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
    return e ? v + e * (values[h] - v) : v;
  };
  d3.median = function(array, f) {
    var numbers = [], n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
    } else {
      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
    }
    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
  };
  d3.variance = function(array, f) {
    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
    if (arguments.length === 1) {
      while (++i < n) {
        if (d3_numeric(a = d3_number(array[i]))) {
          d = a - m;
          m += d / ++j;
          s += d * (a - m);
        }
      }
    } else {
      while (++i < n) {
        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
          d = a - m;
          m += d / ++j;
          s += d * (a - m);
        }
      }
    }
    if (j > 1) return s / (j - 1);
  };
  d3.deviation = function() {
    var v = d3.variance.apply(this, arguments);
    return v ? Math.sqrt(v) : v;
  };
  function d3_bisector(compare) {
    return {
      left: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
        }
        return lo;
      },
      right: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
        }
        return lo;
      }
    };
  }
  var d3_bisect = d3_bisector(d3_ascending);
  d3.bisectLeft = d3_bisect.left;
  d3.bisect = d3.bisectRight = d3_bisect.right;
  d3.bisector = function(f) {
    return d3_bisector(f.length === 1 ? function(d, x) {
      return d3_ascending(f(d), x);
    } : f);
  };
  d3.shuffle = function(array, i0, i1) {
    if ((m = arguments.length) < 3) {
      i1 = array.length;
      if (m < 2) i0 = 0;
    }
    var m = i1 - i0, t, i;
    while (m) {
      i = Math.random() * m-- | 0;
      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
    }
    return array;
  };
  d3.permute = function(array, indexes) {
    var i = indexes.length, permutes = new Array(i);
    while (i--) permutes[i] = array[indexes[i]];
    return permutes;
  };
  d3.pairs = function(array) {
    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
    return pairs;
  };
  d3.zip = function() {
    if (!(n = arguments.length)) return [];
    for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m; ) {
      for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n; ) {
        zip[j] = arguments[j][i];
      }
    }
    return zips;
  };
  function d3_zipLength(d) {
    return d.length;
  }
  d3.transpose = function(matrix) {
    return d3.zip.apply(d3, matrix);
  };
  d3.keys = function(map) {
    var keys = [];
    for (var key in map) keys.push(key);
    return keys;
  };
  d3.values = function(map) {
    var values = [];
    for (var key in map) values.push(map[key]);
    return values;
  };
  d3.entries = function(map) {
    var entries = [];
    for (var key in map) entries.push({
      key: key,
      value: map[key]
    });
    return entries;
  };
  d3.merge = function(arrays) {
    var n = arrays.length, m, i = -1, j = 0, merged, array;
    while (++i < n) j += arrays[i].length;
    merged = new Array(j);
    while (--n >= 0) {
      array = arrays[n];
      m = array.length;
      while (--m >= 0) {
        merged[--j] = array[m];
      }
    }
    return merged;
  };
  var abs = Math.abs;
  d3.range = function(start, stop, step) {
    if (arguments.length < 3) {
      step = 1;
      if (arguments.length < 2) {
        stop = start;
        start = 0;
      }
    }
    if ((stop - start) / step === Infinity) throw new Error("infinite range");
    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
    start *= k, stop *= k, step *= k;
    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
    return range;
  };
  function d3_range_integerScale(x) {
    var k = 1;
    while (x * k % 1) k *= 10;
    return k;
  }
  function d3_class(ctor, properties) {
    for (var key in properties) {
      Object.defineProperty(ctor.prototype, key, {
        value: properties[key],
        enumerable: false
      });
    }
  }
  d3.map = function(object, f) {
    var map = new d3_Map();
    if (object instanceof d3_Map) {
      object.forEach(function(key, value) {
        map.set(key, value);
      });
    } else if (Array.isArray(object)) {
      var i = -1, n = object.length, o;
      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
    } else {
      for (var key in object) map.set(key, object[key]);
    }
    return map;
  };
  function d3_Map() {
    this._ = Object.create(null);
  }
  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
  d3_class(d3_Map, {
    has: d3_map_has,
    get: function(key) {
      return this._[d3_map_escape(key)];
    },
    set: function(key, value) {
      return this._[d3_map_escape(key)] = value;
    },
    remove: d3_map_remove,
    keys: d3_map_keys,
    values: function() {
      var values = [];
      for (var key in this._) values.push(this._[key]);
      return values;
    },
    entries: function() {
      var entries = [];
      for (var key in this._) entries.push({
        key: d3_map_unescape(key),
        value: this._[key]
      });
      return entries;
    },
    size: d3_map_size,
    empty: d3_map_empty,
    forEach: function(f) {
      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
    }
  });
  function d3_map_escape(key) {
    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
  }
  function d3_map_unescape(key) {
    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
  }
  function d3_map_has(key) {
    return d3_map_escape(key) in this._;
  }
  function d3_map_remove(key) {
    return (key = d3_map_escape(key)) in this._ && delete this._[key];
  }
  function d3_map_keys() {
    var keys = [];
    for (var key in this._) keys.push(d3_map_unescape(key));
    return keys;
  }
  function d3_map_size() {
    var size = 0;
    for (var key in this._) ++size;
    return size;
  }
  function d3_map_empty() {
    for (var key in this._) return false;
    return true;
  }
  d3.nest = function() {
    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
    function map(mapType, array, depth) {
      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
      while (++i < n) {
        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
          values.push(object);
        } else {
          valuesByKey.set(keyValue, [ object ]);
        }
      }
      if (mapType) {
        object = mapType();
        setter = function(keyValue, values) {
          object.set(keyValue, map(mapType, values, depth));
        };
      } else {
        object = {};
        setter = function(keyValue, values) {
          object[keyValue] = map(mapType, values, depth);
        };
      }
      valuesByKey.forEach(setter);
      return object;
    }
    function entries(map, depth) {
      if (depth >= keys.length) return map;
      var array = [], sortKey = sortKeys[depth++];
      map.forEach(function(key, keyMap) {
        array.push({
          key: key,
          values: entries(keyMap, depth)
        });
      });
      return sortKey ? array.sort(function(a, b) {
        return sortKey(a.key, b.key);
      }) : array;
    }
    nest.map = function(array, mapType) {
      return map(mapType, array, 0);
    };
    nest.entries = function(array) {
      return entries(map(d3.map, array, 0), 0);
    };
    nest.key = function(d) {
      keys.push(d);
      return nest;
    };
    nest.sortKeys = function(order) {
      sortKeys[keys.length - 1] = order;
      return nest;
    };
    nest.sortValues = function(order) {
      sortValues = order;
      return nest;
    };
    nest.rollup = function(f) {
      rollup = f;
      return nest;
    };
    return nest;
  };
  d3.set = function(array) {
    var set = new d3_Set();
    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
    return set;
  };
  function d3_Set() {
    this._ = Object.create(null);
  }
  d3_class(d3_Set, {
    has: d3_map_has,
    add: function(key) {
      this._[d3_map_escape(key += "")] = true;
      return key;
    },
    remove: d3_map_remove,
    values: d3_map_keys,
    size: d3_map_size,
    empty: d3_map_empty,
    forEach: function(f) {
      for (var key in this._) f.call(this, d3_map_unescape(key));
    }
  });
  d3.behavior = {};
  function d3_identity(d) {
    return d;
  }
  d3.rebind = function(target, source) {
    var i = 1, n = arguments.length, method;
    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
    return target;
  };
  function d3_rebind(target, source, method) {
    return function() {
      var value = method.apply(source, arguments);
      return value === source ? target : value;
    };
  }
  function d3_vendorSymbol(object, name) {
    if (name in object) return name;
    name = name.charAt(0).toUpperCase() + name.slice(1);
    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
      var prefixName = d3_vendorPrefixes[i] + name;
      if (prefixName in object) return prefixName;
    }
  }
  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
  function d3_noop() {}
  d3.dispatch = function() {
    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    return dispatch;
  };
  function d3_dispatch() {}
  d3_dispatch.prototype.on = function(type, listener) {
    var i = type.indexOf("."), name = "";
    if (i >= 0) {
      name = type.slice(i + 1);
      type = type.slice(0, i);
    }
    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
    if (arguments.length === 2) {
      if (listener == null) for (type in this) {
        if (this.hasOwnProperty(type)) this[type].on(name, null);
      }
      return this;
    }
  };
  function d3_dispatch_event(dispatch) {
    var listeners = [], listenerByName = new d3_Map();
    function event() {
      var z = listeners, i = -1, n = z.length, l;
      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
      return dispatch;
    }
    event.on = function(name, listener) {
      var l = listenerByName.get(name), i;
      if (arguments.length < 2) return l && l.on;
      if (l) {
        l.on = null;
        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
        listenerByName.remove(name);
      }
      if (listener) listeners.push(listenerByName.set(name, {
        on: listener
      }));
      return dispatch;
    };
    return event;
  }
  d3.event = null;
  function d3_eventPreventDefault() {
    d3.event.preventDefault();
  }
  function d3_eventSource() {
    var e = d3.event, s;
    while (s = e.sourceEvent) e = s;
    return e;
  }
  function d3_eventDispatch(target) {
    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    dispatch.of = function(thiz, argumentz) {
      return function(e1) {
        try {
          var e0 = e1.sourceEvent = d3.event;
          e1.target = target;
          d3.event = e1;
          dispatch[e1.type].apply(thiz, argumentz);
        } finally {
          d3.event = e0;
        }
      };
    };
    return dispatch;
  }
  d3.requote = function(s) {
    return s.replace(d3_requote_re, "\\$&");
  };
  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
  var d3_subclass = {}.__proto__ ? function(object, prototype) {
    object.__proto__ = prototype;
  } : function(object, prototype) {
    for (var property in prototype) object[property] = prototype[property];
  };
  function d3_selection(groups) {
    d3_subclass(groups, d3_selectionPrototype);
    return groups;
  }
  var d3_select = function(s, n) {
    return n.querySelector(s);
  }, d3_selectAll = function(s, n) {
    return n.querySelectorAll(s);
  }, d3_selectMatches = function(n, s) {
    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
    d3_selectMatches = function(n, s) {
      return d3_selectMatcher.call(n, s);
    };
    return d3_selectMatches(n, s);
  };
  if (typeof Sizzle === "function") {
    d3_select = function(s, n) {
      return Sizzle(s, n)[0] || null;
    };
    d3_selectAll = Sizzle;
    d3_selectMatches = Sizzle.matchesSelector;
  }
  d3.selection = function() {
    return d3.select(d3_document.documentElement);
  };
  var d3_selectionPrototype = d3.selection.prototype = [];
  d3_selectionPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, group, node;
    selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selector(selector) {
    return typeof selector === "function" ? selector : function() {
      return d3_select(selector, this);
    };
  }
  d3_selectionPrototype.selectAll = function(selector) {
    var subgroups = [], subgroup, node;
    selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
          subgroup.parentNode = node;
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selectorAll(selector) {
    return typeof selector === "function" ? selector : function() {
      return d3_selectAll(selector, this);
    };
  }
  var d3_nsPrefix = {
    svg: "http://www.w3.org/2000/svg",
    xhtml: "http://www.w3.org/1999/xhtml",
    xlink: "http://www.w3.org/1999/xlink",
    xml: "http://www.w3.org/XML/1998/namespace",
    xmlns: "http://www.w3.org/2000/xmlns/"
  };
  d3.ns = {
    prefix: d3_nsPrefix,
    qualify: function(name) {
      var i = name.indexOf(":"), prefix = name;
      if (i >= 0) {
        prefix = name.slice(0, i);
        name = name.slice(i + 1);
      }
      return d3_nsPrefix.hasOwnProperty(prefix) ? {
        space: d3_nsPrefix[prefix],
        local: name
      } : name;
    }
  };
  d3_selectionPrototype.attr = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node();
        name = d3.ns.qualify(name);
        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
      }
      for (value in name) this.each(d3_selection_attr(value, name[value]));
      return this;
    }
    return this.each(d3_selection_attr(name, value));
  };
  function d3_selection_attr(name, value) {
    name = d3.ns.qualify(name);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrConstant() {
      this.setAttribute(name, value);
    }
    function attrConstantNS() {
      this.setAttributeNS(name.space, name.local, value);
    }
    function attrFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
    }
    function attrFunctionNS() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
    }
    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
  }
  function d3_collapse(s) {
    return s.trim().replace(/\s+/g, " ");
  }
  d3_selectionPrototype.classed = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
        if (value = node.classList) {
          while (++i < n) if (!value.contains(name[i])) return false;
        } else {
          value = node.getAttribute("class");
          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
        }
        return true;
      }
      for (value in name) this.each(d3_selection_classed(value, name[value]));
      return this;
    }
    return this.each(d3_selection_classed(name, value));
  };
  function d3_selection_classedRe(name) {
    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
  }
  function d3_selection_classes(name) {
    return (name + "").trim().split(/^|\s+/);
  }
  function d3_selection_classed(name, value) {
    name = d3_selection_classes(name).map(d3_selection_classedName);
    var n = name.length;
    function classedConstant() {
      var i = -1;
      while (++i < n) name[i](this, value);
    }
    function classedFunction() {
      var i = -1, x = value.apply(this, arguments);
      while (++i < n) name[i](this, x);
    }
    return typeof value === "function" ? classedFunction : classedConstant;
  }
  function d3_selection_classedName(name) {
    var re = d3_selection_classedRe(name);
    return function(node, value) {
      if (c = node.classList) return value ? c.add(name) : c.remove(name);
      var c = node.getAttribute("class") || "";
      if (value) {
        re.lastIndex = 0;
        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
      } else {
        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
      }
    };
  }
  d3_selectionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
        return this;
      }
      if (n < 2) {
        var node = this.node();
        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
      }
      priority = "";
    }
    return this.each(d3_selection_style(name, value, priority));
  };
  function d3_selection_style(name, value, priority) {
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleConstant() {
      this.style.setProperty(name, value, priority);
    }
    function styleFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
    }
    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
  }
  d3_selectionPrototype.property = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") return this.node()[name];
      for (value in name) this.each(d3_selection_property(value, name[value]));
      return this;
    }
    return this.each(d3_selection_property(name, value));
  };
  function d3_selection_property(name, value) {
    function propertyNull() {
      delete this[name];
    }
    function propertyConstant() {
      this[name] = value;
    }
    function propertyFunction() {
      var x = value.apply(this, arguments);
      if (x == null) delete this[name]; else this[name] = x;
    }
    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
  }
  d3_selectionPrototype.text = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.textContent = v == null ? "" : v;
    } : value == null ? function() {
      this.textContent = "";
    } : function() {
      this.textContent = value;
    }) : this.node().textContent;
  };
  d3_selectionPrototype.html = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.innerHTML = v == null ? "" : v;
    } : value == null ? function() {
      this.innerHTML = "";
    } : function() {
      this.innerHTML = value;
    }) : this.node().innerHTML;
  };
  d3_selectionPrototype.append = function(name) {
    name = d3_selection_creator(name);
    return this.select(function() {
      return this.appendChild(name.apply(this, arguments));
    });
  };
  function d3_selection_creator(name) {
    function create() {
      var document = this.ownerDocument, namespace = this.namespaceURI;
      return namespace ? document.createElementNS(namespace, name) : document.createElement(name);
    }
    function createNS() {
      return this.ownerDocument.createElementNS(name.space, name.local);
    }
    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
  }
  d3_selectionPrototype.insert = function(name, before) {
    name = d3_selection_creator(name);
    before = d3_selection_selector(before);
    return this.select(function() {
      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
    });
  };
  d3_selectionPrototype.remove = function() {
    return this.each(d3_selectionRemove);
  };
  function d3_selectionRemove() {
    var parent = this.parentNode;
    if (parent) parent.removeChild(this);
  }
  d3_selectionPrototype.data = function(value, key) {
    var i = -1, n = this.length, group, node;
    if (!arguments.length) {
      value = new Array(n = (group = this[0]).length);
      while (++i < n) {
        if (node = group[i]) {
          value[i] = node.__data__;
        }
      }
      return value;
    }
    function bind(group, groupData) {
      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
      if (key) {
        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
        for (i = -1; ++i < n; ) {
          if (nodeByKeyValue.has(keyValue = key.call(node = group[i], node.__data__, i))) {
            exitNodes[i] = node;
          } else {
            nodeByKeyValue.set(keyValue, node);
          }
          keyValues[i] = keyValue;
        }
        for (i = -1; ++i < m; ) {
          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          } else if (node !== true) {
            updateNodes[i] = node;
            node.__data__ = nodeData;
          }
          nodeByKeyValue.set(keyValue, true);
        }
        for (i = -1; ++i < n; ) {
          if (nodeByKeyValue.get(keyValues[i]) !== true) {
            exitNodes[i] = group[i];
          }
        }
      } else {
        for (i = -1; ++i < n0; ) {
          node = group[i];
          nodeData = groupData[i];
          if (node) {
            node.__data__ = nodeData;
            updateNodes[i] = node;
          } else {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          }
        }
        for (;i < m; ++i) {
          enterNodes[i] = d3_selection_dataNode(groupData[i]);
        }
        for (;i < n; ++i) {
          exitNodes[i] = group[i];
        }
      }
      enterNodes.update = updateNodes;
      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
      enter.push(enterNodes);
      update.push(updateNodes);
      exit.push(exitNodes);
    }
    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
    if (typeof value === "function") {
      while (++i < n) {
        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
      }
    } else {
      while (++i < n) {
        bind(group = this[i], value);
      }
    }
    update.enter = function() {
      return enter;
    };
    update.exit = function() {
      return exit;
    };
    return update;
  };
  function d3_selection_dataNode(data) {
    return {
      __data__: data
    };
  }
  d3_selectionPrototype.datum = function(value) {
    return arguments.length ? this.property("__data__", value) : this.property("__data__");
  };
  d3_selectionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
          subgroup.push(node);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_filter(selector) {
    return function() {
      return d3_selectMatches(this, selector);
    };
  }
  d3_selectionPrototype.order = function() {
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
        if (node = group[i]) {
          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
          next = node;
        }
      }
    }
    return this;
  };
  d3_selectionPrototype.sort = function(comparator) {
    comparator = d3_selection_sortComparator.apply(this, arguments);
    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
    return this.order();
  };
  function d3_selection_sortComparator(comparator) {
    if (!arguments.length) comparator = d3_ascending;
    return function(a, b) {
      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
    };
  }
  d3_selectionPrototype.each = function(callback) {
    return d3_selection_each(this, function(node, i, j) {
      callback.call(node, node.__data__, i, j);
    });
  };
  function d3_selection_each(groups, callback) {
    for (var j = 0, m = groups.length; j < m; j++) {
      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
        if (node = group[i]) callback(node, i, j);
      }
    }
    return groups;
  }
  d3_selectionPrototype.call = function(callback) {
    var args = d3_array(arguments);
    callback.apply(args[0] = this, args);
    return this;
  };
  d3_selectionPrototype.empty = function() {
    return !this.node();
  };
  d3_selectionPrototype.node = function() {
    for (var j = 0, m = this.length; j < m; j++) {
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        var node = group[i];
        if (node) return node;
      }
    }
    return null;
  };
  d3_selectionPrototype.size = function() {
    var n = 0;
    d3_selection_each(this, function() {
      ++n;
    });
    return n;
  };
  function d3_selection_enter(selection) {
    d3_subclass(selection, d3_selection_enterPrototype);
    return selection;
  }
  var d3_selection_enterPrototype = [];
  d3.selection.enter = d3_selection_enter;
  d3.selection.enter.prototype = d3_selection_enterPrototype;
  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
  d3_selection_enterPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, upgroup, group, node;
    for (var j = -1, m = this.length; ++j < m; ) {
      upgroup = (group = this[j]).update;
      subgroups.push(subgroup = []);
      subgroup.parentNode = group.parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
          subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  d3_selection_enterPrototype.insert = function(name, before) {
    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
    return d3_selectionPrototype.insert.call(this, name, before);
  };
  function d3_selection_enterInsertBefore(enter) {
    var i0, j0;
    return function(d, i, j) {
      var group = enter[j].update, n = group.length, node;
      if (j != j0) j0 = j, i0 = 0;
      if (i >= i0) i0 = i + 1;
      while (!(node = group[i0]) && ++i0 < n) ;
      return node;
    };
  }
  d3.select = function(node) {
    var group;
    if (typeof node === "string") {
      group = [ d3_select(node, d3_document) ];
      group.parentNode = d3_document.documentElement;
    } else {
      group = [ node ];
      group.parentNode = d3_documentElement(node);
    }
    return d3_selection([ group ]);
  };
  d3.selectAll = function(nodes) {
    var group;
    if (typeof nodes === "string") {
      group = d3_array(d3_selectAll(nodes, d3_document));
      group.parentNode = d3_document.documentElement;
    } else {
      group = nodes;
      group.parentNode = null;
    }
    return d3_selection([ group ]);
  };
  d3_selectionPrototype.on = function(type, listener, capture) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof type !== "string") {
        if (n < 2) listener = false;
        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
        return this;
      }
      if (n < 2) return (n = this.node()["__on" + type]) && n._;
      capture = false;
    }
    return this.each(d3_selection_on(type, listener, capture));
  };
  function d3_selection_on(type, listener, capture) {
    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
    if (i > 0) type = type.slice(0, i);
    var filter = d3_selection_onFilters.get(type);
    if (filter) type = filter, wrap = d3_selection_onFilter;
    function onRemove() {
      var l = this[name];
      if (l) {
        this.removeEventListener(type, l, l.$);
        delete this[name];
      }
    }
    function onAdd() {
      var l = wrap(listener, d3_array(arguments));
      onRemove.call(this);
      this.addEventListener(type, this[name] = l, l.$ = capture);
      l._ = listener;
    }
    function removeAll() {
      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
      for (var name in this) {
        if (match = name.match(re)) {
          var l = this[name];
          this.removeEventListener(match[1], l, l.$);
          delete this[name];
        }
      }
    }
    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
  }
  var d3_selection_onFilters = d3.map({
    mouseenter: "mouseover",
    mouseleave: "mouseout"
  });
  if (d3_document) {
    d3_selection_onFilters.forEach(function(k) {
      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
    });
  }
  function d3_selection_onListener(listener, argumentz) {
    return function(e) {
      var o = d3.event;
      d3.event = e;
      argumentz[0] = this.__data__;
      try {
        listener.apply(this, argumentz);
      } finally {
        d3.event = o;
      }
    };
  }
  function d3_selection_onFilter(listener, argumentz) {
    var l = d3_selection_onListener(listener, argumentz);
    return function(e) {
      var target = this, related = e.relatedTarget;
      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
        l.call(target, e);
      }
    };
  }
  var d3_event_dragSelect, d3_event_dragId = 0;
  function d3_event_dragSuppress(node) {
    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
    if (d3_event_dragSelect == null) {
      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
    }
    if (d3_event_dragSelect) {
      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
      style[d3_event_dragSelect] = "none";
    }
    return function(suppressClick) {
      w.on(name, null);
      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
      if (suppressClick) {
        var off = function() {
          w.on(click, null);
        };
        w.on(click, function() {
          d3_eventPreventDefault();
          off();
        }, true);
        setTimeout(off, 0);
      }
    };
  }
  d3.mouse = function(container) {
    return d3_mousePoint(container, d3_eventSource());
  };
  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
  function d3_mousePoint(container, e) {
    if (e.changedTouches) e = e.changedTouches[0];
    var svg = container.ownerSVGElement || container;
    if (svg.createSVGPoint) {
      var point = svg.createSVGPoint();
      if (d3_mouse_bug44083 < 0) {
        var window = d3_window(container);
        if (window.scrollX || window.scrollY) {
          svg = d3.select("body").append("svg").style({
            position: "absolute",
            top: 0,
            left: 0,
            margin: 0,
            padding: 0,
            border: "none"
          }, "important");
          var ctm = svg[0][0].getScreenCTM();
          d3_mouse_bug44083 = !(ctm.f || ctm.e);
          svg.remove();
        }
      }
      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
      point.y = e.clientY;
      point = point.matrixTransform(container.getScreenCTM().inverse());
      return [ point.x, point.y ];
    }
    var rect = container.getBoundingClientRect();
    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
  }
  d3.touch = function(container, touches, identifier) {
    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
      if ((touch = touches[i]).identifier === identifier) {
        return d3_mousePoint(container, touch);
      }
    }
  };
  d3.behavior.drag = function() {
    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
    function drag() {
      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
    }
    function dragstart(id, position, subject, move, end) {
      return function() {
        var that = this, target = d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
        if (origin) {
          dragOffset = origin.apply(that, arguments);
          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
        } else {
          dragOffset = [ 0, 0 ];
        }
        dispatch({
          type: "dragstart"
        });
        function moved() {
          var position1 = position(parent, dragId), dx, dy;
          if (!position1) return;
          dx = position1[0] - position0[0];
          dy = position1[1] - position0[1];
          dragged |= dx | dy;
          position0 = position1;
          dispatch({
            type: "drag",
            x: position1[0] + dragOffset[0],
            y: position1[1] + dragOffset[1],
            dx: dx,
            dy: dy
          });
        }
        function ended() {
          if (!position(parent, dragId)) return;
          dragSubject.on(move + dragName, null).on(end + dragName, null);
          dragRestore(dragged && d3.event.target === target);
          dispatch({
            type: "dragend"
          });
        }
      };
    }
    drag.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return drag;
    };
    return d3.rebind(drag, event, "on");
  };
  function d3_behavior_dragTouchId() {
    return d3.event.changedTouches[0].identifier;
  }
  d3.touches = function(container, touches) {
    if (arguments.length < 2) touches = d3_eventSource().touches;
    return touches ? d3_array(touches).map(function(touch) {
      var point = d3_mousePoint(container, touch);
      point.identifier = touch.identifier;
      return point;
    }) : [];
  };
  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
  function d3_sgn(x) {
    return x > 0 ? 1 : x < 0 ? -1 : 0;
  }
  function d3_cross2d(a, b, c) {
    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
  }
  function d3_acos(x) {
    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
  }
  function d3_asin(x) {
    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
  }
  function d3_sinh(x) {
    return ((x = Math.exp(x)) - 1 / x) / 2;
  }
  function d3_cosh(x) {
    return ((x = Math.exp(x)) + 1 / x) / 2;
  }
  function d3_tanh(x) {
    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
  }
  function d3_haversin(x) {
    return (x = Math.sin(x / 2)) * x;
  }
  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
  d3.interpolateZoom = function(p0, p1) {
    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2];
    var dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1), dr = r1 - r0, S = (dr || Math.log(w1 / w0)) / ρ;
    function interpolate(t) {
      var s = t * S;
      if (dr) {
        var coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
      }
      return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * s) ];
    }
    interpolate.duration = S * 1e3;
    return interpolate;
  };
  d3.behavior.zoom = function() {
    var view = {
      x: 0,
      y: 0,
      k: 1
    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
    if (!d3_behavior_zoomWheel) {
      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
        return d3.event.wheelDelta;
      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
        return -d3.event.detail;
      }, "MozMousePixelScroll");
    }
    function zoom(g) {
      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
    }
    zoom.event = function(g) {
      g.each(function() {
        var dispatch = event.of(this, arguments), view1 = view;
        if (d3_transitionInheritId) {
          d3.select(this).transition().each("start.zoom", function() {
            view = this.__chart__ || {
              x: 0,
              y: 0,
              k: 1
            };
            zoomstarted(dispatch);
          }).tween("zoom:zoom", function() {
            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
            return function(t) {
              var l = i(t), k = dx / l[2];
              this.__chart__ = view = {
                x: cx - l[0] * k,
                y: cy - l[1] * k,
                k: k
              };
              zoomed(dispatch);
            };
          }).each("interrupt.zoom", function() {
            zoomended(dispatch);
          }).each("end.zoom", function() {
            zoomended(dispatch);
          });
        } else {
          this.__chart__ = view;
          zoomstarted(dispatch);
          zoomed(dispatch);
          zoomended(dispatch);
        }
      });
    };
    zoom.translate = function(_) {
      if (!arguments.length) return [ view.x, view.y ];
      view = {
        x: +_[0],
        y: +_[1],
        k: view.k
      };
      rescale();
      return zoom;
    };
    zoom.scale = function(_) {
      if (!arguments.length) return view.k;
      view = {
        x: view.x,
        y: view.y,
        k: +_
      };
      rescale();
      return zoom;
    };
    zoom.scaleExtent = function(_) {
      if (!arguments.length) return scaleExtent;
      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.center = function(_) {
      if (!arguments.length) return center;
      center = _ && [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.size = function(_) {
      if (!arguments.length) return size;
      size = _ && [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.duration = function(_) {
      if (!arguments.length) return duration;
      duration = +_;
      return zoom;
    };
    zoom.x = function(z) {
      if (!arguments.length) return x1;
      x1 = z;
      x0 = z.copy();
      view = {
        x: 0,
        y: 0,
        k: 1
      };
      return zoom;
    };
    zoom.y = function(z) {
      if (!arguments.length) return y1;
      y1 = z;
      y0 = z.copy();
      view = {
        x: 0,
        y: 0,
        k: 1
      };
      return zoom;
    };
    function location(p) {
      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
    }
    function point(l) {
      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
    }
    function scaleTo(s) {
      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
    }
    function translateTo(p, l) {
      l = point(l);
      view.x += p[0] - l[0];
      view.y += p[1] - l[1];
    }
    function zoomTo(that, p, l, k) {
      that.__chart__ = {
        x: view.x,
        y: view.y,
        k: view.k
      };
      scaleTo(Math.pow(2, k));
      translateTo(center0 = p, l);
      that = d3.select(that);
      if (duration > 0) that = that.transition().duration(duration);
      that.call(zoom.event);
    }
    function rescale() {
      if (x1) x1.domain(x0.range().map(function(x) {
        return (x - view.x) / view.k;
      }).map(x0.invert));
      if (y1) y1.domain(y0.range().map(function(y) {
        return (y - view.y) / view.k;
      }).map(y0.invert));
    }
    function zoomstarted(dispatch) {
      if (!zooming++) dispatch({
        type: "zoomstart"
      });
    }
    function zoomed(dispatch) {
      rescale();
      dispatch({
        type: "zoom",
        scale: view.k,
        translate: [ view.x, view.y ]
      });
    }
    function zoomended(dispatch) {
      if (!--zooming) dispatch({
        type: "zoomend"
      });
      center0 = null;
    }
    function mousedowned() {
      var that = this, target = d3.event.target, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
      d3_selection_interrupt.call(that);
      zoomstarted(dispatch);
      function moved() {
        dragged = 1;
        translateTo(d3.mouse(that), location0);
        zoomed(dispatch);
      }
      function ended() {
        subject.on(mousemove, null).on(mouseup, null);
        dragRestore(dragged && d3.event.target === target);
        zoomended(dispatch);
      }
    }
    function touchstarted() {
      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
      started();
      zoomstarted(dispatch);
      subject.on(mousedown, null).on(touchstart, started);
      function relocate() {
        var touches = d3.touches(that);
        scale0 = view.k;
        touches.forEach(function(t) {
          if (t.identifier in locations0) locations0[t.identifier] = location(t);
        });
        return touches;
      }
      function started() {
        var target = d3.event.target;
        d3.select(target).on(touchmove, moved).on(touchend, ended);
        targets.push(target);
        var changed = d3.event.changedTouches;
        for (var i = 0, n = changed.length; i < n; ++i) {
          locations0[changed[i].identifier] = null;
        }
        var touches = relocate(), now = Date.now();
        if (touches.length === 1) {
          if (now - touchtime < 500) {
            var p = touches[0];
            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
            d3_eventPreventDefault();
          }
          touchtime = now;
        } else if (touches.length > 1) {
          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
          distance0 = dx * dx + dy * dy;
        }
      }
      function moved() {
        var touches = d3.touches(that), p0, l0, p1, l1;
        d3_selection_interrupt.call(that);
        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
          p1 = touches[i];
          if (l1 = locations0[p1.identifier]) {
            if (l0) break;
            p0 = p1, l0 = l1;
          }
        }
        if (l1) {
          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
          scaleTo(scale1 * scale0);
        }
        touchtime = null;
        translateTo(p0, l0);
        zoomed(dispatch);
      }
      function ended() {
        if (d3.event.touches.length) {
          var changed = d3.event.changedTouches;
          for (var i = 0, n = changed.length; i < n; ++i) {
            delete locations0[changed[i].identifier];
          }
          for (var identifier in locations0) {
            return void relocate();
          }
        }
        d3.selectAll(targets).on(zoomName, null);
        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
        dragRestore();
        zoomended(dispatch);
      }
    }
    function mousewheeled() {
      var dispatch = event.of(this, arguments);
      if (mousewheelTimer) clearTimeout(mousewheelTimer); else translate0 = location(center0 = center || d3.mouse(this)), 
      d3_selection_interrupt.call(this), zoomstarted(dispatch);
      mousewheelTimer = setTimeout(function() {
        mousewheelTimer = null;
        zoomended(dispatch);
      }, 50);
      d3_eventPreventDefault();
      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
      translateTo(center0, translate0);
      zoomed(dispatch);
    }
    function dblclicked() {
      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
    }
    return d3.rebind(zoom, event, "on");
  };
  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
  d3.color = d3_color;
  function d3_color() {}
  d3_color.prototype.toString = function() {
    return this.rgb() + "";
  };
  d3.hsl = d3_hsl;
  function d3_hsl(h, s, l) {
    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
  }
  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
  d3_hslPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_hsl(this.h, this.s, this.l / k);
  };
  d3_hslPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_hsl(this.h, this.s, k * this.l);
  };
  d3_hslPrototype.rgb = function() {
    return d3_hsl_rgb(this.h, this.s, this.l);
  };
  function d3_hsl_rgb(h, s, l) {
    var m1, m2;
    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
    l = l < 0 ? 0 : l > 1 ? 1 : l;
    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
    m1 = 2 * l - m2;
    function v(h) {
      if (h > 360) h -= 360; else if (h < 0) h += 360;
      if (h < 60) return m1 + (m2 - m1) * h / 60;
      if (h < 180) return m2;
      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
      return m1;
    }
    function vv(h) {
      return Math.round(v(h) * 255);
    }
    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
  }
  d3.hcl = d3_hcl;
  function d3_hcl(h, c, l) {
    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
  }
  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
  d3_hclPrototype.brighter = function(k) {
    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.darker = function(k) {
    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.rgb = function() {
    return d3_hcl_lab(this.h, this.c, this.l).rgb();
  };
  function d3_hcl_lab(h, c, l) {
    if (isNaN(h)) h = 0;
    if (isNaN(c)) c = 0;
    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
  }
  d3.lab = d3_lab;
  function d3_lab(l, a, b) {
    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
  }
  var d3_lab_K = 18;
  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
  var d3_labPrototype = d3_lab.prototype = new d3_color();
  d3_labPrototype.brighter = function(k) {
    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.darker = function(k) {
    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.rgb = function() {
    return d3_lab_rgb(this.l, this.a, this.b);
  };
  function d3_lab_rgb(l, a, b) {
    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
    x = d3_lab_xyz(x) * d3_lab_X;
    y = d3_lab_xyz(y) * d3_lab_Y;
    z = d3_lab_xyz(z) * d3_lab_Z;
    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
  }
  function d3_lab_hcl(l, a, b) {
    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
  }
  function d3_lab_xyz(x) {
    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
  }
  function d3_xyz_lab(x) {
    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
  }
  function d3_xyz_rgb(r) {
    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
  }
  d3.rgb = d3_rgb;
  function d3_rgb(r, g, b) {
    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
  }
  function d3_rgbNumber(value) {
    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
  }
  function d3_rgbString(value) {
    return d3_rgbNumber(value) + "";
  }
  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
  d3_rgbPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    var r = this.r, g = this.g, b = this.b, i = 30;
    if (!r && !g && !b) return new d3_rgb(i, i, i);
    if (r && r < i) r = i;
    if (g && g < i) g = i;
    if (b && b < i) b = i;
    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
  };
  d3_rgbPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_rgb(k * this.r, k * this.g, k * this.b);
  };
  d3_rgbPrototype.hsl = function() {
    return d3_rgb_hsl(this.r, this.g, this.b);
  };
  d3_rgbPrototype.toString = function() {
    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
  };
  function d3_rgb_hex(v) {
    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
  }
  function d3_rgb_parse(format, rgb, hsl) {
    var r = 0, g = 0, b = 0, m1, m2, color;
    m1 = /([a-z]+)\((.*)\)/i.exec(format);
    if (m1) {
      m2 = m1[2].split(",");
      switch (m1[1]) {
       case "hsl":
        {
          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
        }

       case "rgb":
        {
          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
        }
      }
    }
    if (color = d3_rgb_names.get(format.toLowerCase())) {
      return rgb(color.r, color.g, color.b);
    }
    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
      if (format.length === 4) {
        r = (color & 3840) >> 4;
        r = r >> 4 | r;
        g = color & 240;
        g = g >> 4 | g;
        b = color & 15;
        b = b << 4 | b;
      } else if (format.length === 7) {
        r = (color & 16711680) >> 16;
        g = (color & 65280) >> 8;
        b = color & 255;
      }
    }
    return rgb(r, g, b);
  }
  function d3_rgb_hsl(r, g, b) {
    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
    if (d) {
      s = l < .5 ? d / (max + min) : d / (2 - max - min);
      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
      h *= 60;
    } else {
      h = NaN;
      s = l > 0 && l < 1 ? 0 : h;
    }
    return new d3_hsl(h, s, l);
  }
  function d3_rgb_lab(r, g, b) {
    r = d3_rgb_xyz(r);
    g = d3_rgb_xyz(g);
    b = d3_rgb_xyz(b);
    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
  }
  function d3_rgb_xyz(r) {
    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
  }
  function d3_rgb_parseNumber(c) {
    var f = parseFloat(c);
    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
  }
  var d3_rgb_names = d3.map({
    aliceblue: 15792383,
    antiquewhite: 16444375,
    aqua: 65535,
    aquamarine: 8388564,
    azure: 15794175,
    beige: 16119260,
    bisque: 16770244,
    black: 0,
    blanchedalmond: 16772045,
    blue: 255,
    blueviolet: 9055202,
    brown: 10824234,
    burlywood: 14596231,
    cadetblue: 6266528,
    chartreuse: 8388352,
    chocolate: 13789470,
    coral: 16744272,
    cornflowerblue: 6591981,
    cornsilk: 16775388,
    crimson: 14423100,
    cyan: 65535,
    darkblue: 139,
    darkcyan: 35723,
    darkgoldenrod: 12092939,
    darkgray: 11119017,
    darkgreen: 25600,
    darkgrey: 11119017,
    darkkhaki: 12433259,
    darkmagenta: 9109643,
    darkolivegreen: 5597999,
    darkorange: 16747520,
    darkorchid: 10040012,
    darkred: 9109504,
    darksalmon: 15308410,
    darkseagreen: 9419919,
    darkslateblue: 4734347,
    darkslategray: 3100495,
    darkslategrey: 3100495,
    darkturquoise: 52945,
    darkviolet: 9699539,
    deeppink: 16716947,
    deepskyblue: 49151,
    dimgray: 6908265,
    dimgrey: 6908265,
    dodgerblue: 2003199,
    firebrick: 11674146,
    floralwhite: 16775920,
    forestgreen: 2263842,
    fuchsia: 16711935,
    gainsboro: 14474460,
    ghostwhite: 16316671,
    gold: 16766720,
    goldenrod: 14329120,
    gray: 8421504,
    green: 32768,
    greenyellow: 11403055,
    grey: 8421504,
    honeydew: 15794160,
    hotpink: 16738740,
    indianred: 13458524,
    indigo: 4915330,
    ivory: 16777200,
    khaki: 15787660,
    lavender: 15132410,
    lavenderblush: 16773365,
    lawngreen: 8190976,
    lemonchiffon: 16775885,
    lightblue: 11393254,
    lightcoral: 15761536,
    lightcyan: 14745599,
    lightgoldenrodyellow: 16448210,
    lightgray: 13882323,
    lightgreen: 9498256,
    lightgrey: 13882323,
    lightpink: 16758465,
    lightsalmon: 16752762,
    lightseagreen: 2142890,
    lightskyblue: 8900346,
    lightslategray: 7833753,
    lightslategrey: 7833753,
    lightsteelblue: 11584734,
    lightyellow: 16777184,
    lime: 65280,
    limegreen: 3329330,
    linen: 16445670,
    magenta: 16711935,
    maroon: 8388608,
    mediumaquamarine: 6737322,
    mediumblue: 205,
    mediumorchid: 12211667,
    mediumpurple: 9662683,
    mediumseagreen: 3978097,
    mediumslateblue: 8087790,
    mediumspringgreen: 64154,
    mediumturquoise: 4772300,
    mediumvioletred: 13047173,
    midnightblue: 1644912,
    mintcream: 16121850,
    mistyrose: 16770273,
    moccasin: 16770229,
    navajowhite: 16768685,
    navy: 128,
    oldlace: 16643558,
    olive: 8421376,
    olivedrab: 7048739,
    orange: 16753920,
    orangered: 16729344,
    orchid: 14315734,
    palegoldenrod: 15657130,
    palegreen: 10025880,
    paleturquoise: 11529966,
    palevioletred: 14381203,
    papayawhip: 16773077,
    peachpuff: 16767673,
    peru: 13468991,
    pink: 16761035,
    plum: 14524637,
    powderblue: 11591910,
    purple: 8388736,
    rebeccapurple: 6697881,
    red: 16711680,
    rosybrown: 12357519,
    royalblue: 4286945,
    saddlebrown: 9127187,
    salmon: 16416882,
    sandybrown: 16032864,
    seagreen: 3050327,
    seashell: 16774638,
    sienna: 10506797,
    silver: 12632256,
    skyblue: 8900331,
    slateblue: 6970061,
    slategray: 7372944,
    slategrey: 7372944,
    snow: 16775930,
    springgreen: 65407,
    steelblue: 4620980,
    tan: 13808780,
    teal: 32896,
    thistle: 14204888,
    tomato: 16737095,
    turquoise: 4251856,
    violet: 15631086,
    wheat: 16113331,
    white: 16777215,
    whitesmoke: 16119285,
    yellow: 16776960,
    yellowgreen: 10145074
  });
  d3_rgb_names.forEach(function(key, value) {
    d3_rgb_names.set(key, d3_rgbNumber(value));
  });
  function d3_functor(v) {
    return typeof v === "function" ? v : function() {
      return v;
    };
  }
  d3.functor = d3_functor;
  d3.xhr = d3_xhrType(d3_identity);
  function d3_xhrType(response) {
    return function(url, mimeType, callback) {
      if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
      mimeType = null;
      return d3_xhr(url, mimeType, response, callback);
    };
  }
  function d3_xhr(url, mimeType, response, callback) {
    var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
    if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
    "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
      request.readyState > 3 && respond();
    };
    function respond() {
      var status = request.status, result;
      if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
        try {
          result = response.call(xhr, request);
        } catch (e) {
          dispatch.error.call(xhr, e);
          return;
        }
        dispatch.load.call(xhr, result);
      } else {
        dispatch.error.call(xhr, request);
      }
    }
    request.onprogress = function(event) {
      var o = d3.event;
      d3.event = event;
      try {
        dispatch.progress.call(xhr, request);
      } finally {
        d3.event = o;
      }
    };
    xhr.header = function(name, value) {
      name = (name + "").toLowerCase();
      if (arguments.length < 2) return headers[name];
      if (value == null) delete headers[name]; else headers[name] = value + "";
      return xhr;
    };
    xhr.mimeType = function(value) {
      if (!arguments.length) return mimeType;
      mimeType = value == null ? null : value + "";
      return xhr;
    };
    xhr.responseType = function(value) {
      if (!arguments.length) return responseType;
      responseType = value;
      return xhr;
    };
    xhr.response = function(value) {
      response = value;
      return xhr;
    };
    [ "get", "post" ].forEach(function(method) {
      xhr[method] = function() {
        return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
      };
    });
    xhr.send = function(method, data, callback) {
      if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
      request.open(method, url, true);
      if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
      if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
      if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
      if (responseType != null) request.responseType = responseType;
      if (callback != null) xhr.on("error", callback).on("load", function(request) {
        callback(null, request);
      });
      dispatch.beforesend.call(xhr, request);
      request.send(data == null ? null : data);
      return xhr;
    };
    xhr.abort = function() {
      request.abort();
      return xhr;
    };
    d3.rebind(xhr, dispatch, "on");
    return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
  }
  function d3_xhr_fixCallback(callback) {
    return callback.length === 1 ? function(error, request) {
      callback(error == null ? request : null);
    } : callback;
  }
  function d3_xhrHasResponse(request) {
    var type = request.responseType;
    return type && type !== "text" ? request.response : request.responseText;
  }
  d3.dsv = function(delimiter, mimeType) {
    var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
    function dsv(url, row, callback) {
      if (arguments.length < 3) callback = row, row = null;
      var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
      xhr.row = function(_) {
        return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
      };
      return xhr;
    }
    function response(request) {
      return dsv.parse(request.responseText);
    }
    function typedResponse(f) {
      return function(request) {
        return dsv.parse(request.responseText, f);
      };
    }
    dsv.parse = function(text, f) {
      var o;
      return dsv.parseRows(text, function(row, i) {
        if (o) return o(row, i - 1);
        var a = new Function("d", "return {" + row.map(function(name, i) {
          return JSON.stringify(name) + ": d[" + i + "]";
        }).join(",") + "}");
        o = f ? function(row, i) {
          return f(a(row), i);
        } : a;
      });
    };
    dsv.parseRows = function(text, f) {
      var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
      function token() {
        if (I >= N) return EOF;
        if (eol) return eol = false, EOL;
        var j = I;
        if (text.charCodeAt(j) === 34) {
          var i = j;
          while (i++ < N) {
            if (text.charCodeAt(i) === 34) {
              if (text.charCodeAt(i + 1) !== 34) break;
              ++i;
            }
          }
          I = i + 2;
          var c = text.charCodeAt(i + 1);
          if (c === 13) {
            eol = true;
            if (text.charCodeAt(i + 2) === 10) ++I;
          } else if (c === 10) {
            eol = true;
          }
          return text.slice(j + 1, i).replace(/""/g, '"');
        }
        while (I < N) {
          var c = text.charCodeAt(I++), k = 1;
          if (c === 10) eol = true; else if (c === 13) {
            eol = true;
            if (text.charCodeAt(I) === 10) ++I, ++k;
          } else if (c !== delimiterCode) continue;
          return text.slice(j, I - k);
        }
        return text.slice(j);
      }
      while ((t = token()) !== EOF) {
        var a = [];
        while (t !== EOL && t !== EOF) {
          a.push(t);
          t = token();
        }
        if (f && (a = f(a, n++)) == null) continue;
        rows.push(a);
      }
      return rows;
    };
    dsv.format = function(rows) {
      if (Array.isArray(rows[0])) return dsv.formatRows(rows);
      var fieldSet = new d3_Set(), fields = [];
      rows.forEach(function(row) {
        for (var field in row) {
          if (!fieldSet.has(field)) {
            fields.push(fieldSet.add(field));
          }
        }
      });
      return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
        return fields.map(function(field) {
          return formatValue(row[field]);
        }).join(delimiter);
      })).join("\n");
    };
    dsv.formatRows = function(rows) {
      return rows.map(formatRow).join("\n");
    };
    function formatRow(row) {
      return row.map(formatValue).join(delimiter);
    }
    function formatValue(text) {
      return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
    }
    return dsv;
  };
  d3.csv = d3.dsv(",", "text/csv");
  d3.tsv = d3.dsv("	", "text/tab-separated-values");
  var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_active, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] || function(callback) {
    setTimeout(callback, 17);
  };
  d3.timer = function(callback, delay, then) {
    var n = arguments.length;
    if (n < 2) delay = 0;
    if (n < 3) then = Date.now();
    var time = then + delay, timer = {
      c: callback,
      t: time,
      f: false,
      n: null
    };
    if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
    d3_timer_queueTail = timer;
    if (!d3_timer_interval) {
      d3_timer_timeout = clearTimeout(d3_timer_timeout);
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  };
  function d3_timer_step() {
    var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
    if (delay > 24) {
      if (isFinite(delay)) {
        clearTimeout(d3_timer_timeout);
        d3_timer_timeout = setTimeout(d3_timer_step, delay);
      }
      d3_timer_interval = 0;
    } else {
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  }
  d3.timer.flush = function() {
    d3_timer_mark();
    d3_timer_sweep();
  };
  function d3_timer_mark() {
    var now = Date.now();
    d3_timer_active = d3_timer_queueHead;
    while (d3_timer_active) {
      if (now >= d3_timer_active.t) d3_timer_active.f = d3_timer_active.c(now - d3_timer_active.t);
      d3_timer_active = d3_timer_active.n;
    }
    return now;
  }
  function d3_timer_sweep() {
    var t0, t1 = d3_timer_queueHead, time = Infinity;
    while (t1) {
      if (t1.f) {
        t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
      } else {
        if (t1.t < time) time = t1.t;
        t1 = (t0 = t1).n;
      }
    }
    d3_timer_queueTail = t0;
    return time;
  }
  function d3_format_precision(x, p) {
    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
  }
  d3.round = function(x, n) {
    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
  };
  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
  d3.formatPrefix = function(value, precision) {
    var i = 0;
    if (value) {
      if (value < 0) value *= -1;
      if (precision) value = d3.round(value, d3_format_precision(value, precision));
      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
      i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
    }
    return d3_formatPrefixes[8 + i / 3];
  };
  function d3_formatPrefix(d, i) {
    var k = Math.pow(10, abs(8 - i) * 3);
    return {
      scale: i > 8 ? function(d) {
        return d / k;
      } : function(d) {
        return d * k;
      },
      symbol: d
    };
  }
  function d3_locale_numberFormat(locale) {
    var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
      var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
      while (i > 0 && g > 0) {
        if (length + g + 1 > width) g = Math.max(1, width - length);
        t.push(value.substring(i -= g, i + g));
        if ((length += g + 1) > width) break;
        g = locale_grouping[j = (j + 1) % locale_grouping.length];
      }
      return t.reverse().join(locale_thousands);
    } : d3_identity;
    return function(specifier) {
      var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
      if (precision) precision = +precision.substring(1);
      if (zfill || fill === "0" && align === "=") {
        zfill = fill = "0";
        align = "=";
      }
      switch (type) {
       case "n":
        comma = true;
        type = "g";
        break;

       case "%":
        scale = 100;
        suffix = "%";
        type = "f";
        break;

       case "p":
        scale = 100;
        suffix = "%";
        type = "r";
        break;

       case "b":
       case "o":
       case "x":
       case "X":
        if (symbol === "#") prefix = "0" + type.toLowerCase();

       case "c":
        exponent = false;

       case "d":
        integer = true;
        precision = 0;
        break;

       case "s":
        scale = -1;
        type = "r";
        break;
      }
      if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
      if (type == "r" && !precision) type = "g";
      if (precision != null) {
        if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
      }
      type = d3_format_types.get(type) || d3_format_typeDefault;
      var zcomma = zfill && comma;
      return function(value) {
        var fullSuffix = suffix;
        if (integer && value % 1) return "";
        var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
        if (scale < 0) {
          var unit = d3.formatPrefix(value, precision);
          value = unit.scale(value);
          fullSuffix = unit.symbol + suffix;
        } else {
          value *= scale;
        }
        value = type(value, precision);
        var i = value.lastIndexOf("."), before, after;
        if (i < 0) {
          var j = exponent ? value.lastIndexOf("e") : -1;
          if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
        } else {
          before = value.substring(0, i);
          after = locale_decimal + value.substring(i + 1);
        }
        if (!zfill && comma) before = formatGroup(before, Infinity);
        var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
        if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
        negative += prefix;
        value = before + after;
        return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
      };
    };
  }
  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
  var d3_format_types = d3.map({
    b: function(x) {
      return x.toString(2);
    },
    c: function(x) {
      return String.fromCharCode(x);
    },
    o: function(x) {
      return x.toString(8);
    },
    x: function(x) {
      return x.toString(16);
    },
    X: function(x) {
      return x.toString(16).toUpperCase();
    },
    g: function(x, p) {
      return x.toPrecision(p);
    },
    e: function(x, p) {
      return x.toExponential(p);
    },
    f: function(x, p) {
      return x.toFixed(p);
    },
    r: function(x, p) {
      return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
    }
  });
  function d3_format_typeDefault(x) {
    return x + "";
  }
  var d3_time = d3.time = {}, d3_date = Date;
  function d3_date_utc() {
    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
  }
  d3_date_utc.prototype = {
    getDate: function() {
      return this._.getUTCDate();
    },
    getDay: function() {
      return this._.getUTCDay();
    },
    getFullYear: function() {
      return this._.getUTCFullYear();
    },
    getHours: function() {
      return this._.getUTCHours();
    },
    getMilliseconds: function() {
      return this._.getUTCMilliseconds();
    },
    getMinutes: function() {
      return this._.getUTCMinutes();
    },
    getMonth: function() {
      return this._.getUTCMonth();
    },
    getSeconds: function() {
      return this._.getUTCSeconds();
    },
    getTime: function() {
      return this._.getTime();
    },
    getTimezoneOffset: function() {
      return 0;
    },
    valueOf: function() {
      return this._.valueOf();
    },
    setDate: function() {
      d3_time_prototype.setUTCDate.apply(this._, arguments);
    },
    setDay: function() {
      d3_time_prototype.setUTCDay.apply(this._, arguments);
    },
    setFullYear: function() {
      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
    },
    setHours: function() {
      d3_time_prototype.setUTCHours.apply(this._, arguments);
    },
    setMilliseconds: function() {
      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
    },
    setMinutes: function() {
      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
    },
    setMonth: function() {
      d3_time_prototype.setUTCMonth.apply(this._, arguments);
    },
    setSeconds: function() {
      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
    },
    setTime: function() {
      d3_time_prototype.setTime.apply(this._, arguments);
    }
  };
  var d3_time_prototype = Date.prototype;
  function d3_time_interval(local, step, number) {
    function round(date) {
      var d0 = local(date), d1 = offset(d0, 1);
      return date - d0 < d1 - date ? d0 : d1;
    }
    function ceil(date) {
      step(date = local(new d3_date(date - 1)), 1);
      return date;
    }
    function offset(date, k) {
      step(date = new d3_date(+date), k);
      return date;
    }
    function range(t0, t1, dt) {
      var time = ceil(t0), times = [];
      if (dt > 1) {
        while (time < t1) {
          if (!(number(time) % dt)) times.push(new Date(+time));
          step(time, 1);
        }
      } else {
        while (time < t1) times.push(new Date(+time)), step(time, 1);
      }
      return times;
    }
    function range_utc(t0, t1, dt) {
      try {
        d3_date = d3_date_utc;
        var utc = new d3_date_utc();
        utc._ = t0;
        return range(utc, t1, dt);
      } finally {
        d3_date = Date;
      }
    }
    local.floor = local;
    local.round = round;
    local.ceil = ceil;
    local.offset = offset;
    local.range = range;
    var utc = local.utc = d3_time_interval_utc(local);
    utc.floor = utc;
    utc.round = d3_time_interval_utc(round);
    utc.ceil = d3_time_interval_utc(ceil);
    utc.offset = d3_time_interval_utc(offset);
    utc.range = range_utc;
    return local;
  }
  function d3_time_interval_utc(method) {
    return function(date, k) {
      try {
        d3_date = d3_date_utc;
        var utc = new d3_date_utc();
        utc._ = date;
        return method(utc, k)._;
      } finally {
        d3_date = Date;
      }
    };
  }
  d3_time.year = d3_time_interval(function(date) {
    date = d3_time.day(date);
    date.setMonth(0, 1);
    return date;
  }, function(date, offset) {
    date.setFullYear(date.getFullYear() + offset);
  }, function(date) {
    return date.getFullYear();
  });
  d3_time.years = d3_time.year.range;
  d3_time.years.utc = d3_time.year.utc.range;
  d3_time.day = d3_time_interval(function(date) {
    var day = new d3_date(2e3, 0);
    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
    return day;
  }, function(date, offset) {
    date.setDate(date.getDate() + offset);
  }, function(date) {
    return date.getDate() - 1;
  });
  d3_time.days = d3_time.day.range;
  d3_time.days.utc = d3_time.day.utc.range;
  d3_time.dayOfYear = function(date) {
    var year = d3_time.year(date);
    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
  };
  [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
    i = 7 - i;
    var interval = d3_time[day] = d3_time_interval(function(date) {
      (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
      return date;
    }, function(date, offset) {
      date.setDate(date.getDate() + Math.floor(offset) * 7);
    }, function(date) {
      var day = d3_time.year(date).getDay();
      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
    });
    d3_time[day + "s"] = interval.range;
    d3_time[day + "s"].utc = interval.utc.range;
    d3_time[day + "OfYear"] = function(date) {
      var day = d3_time.year(date).getDay();
      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
    };
  });
  d3_time.week = d3_time.sunday;
  d3_time.weeks = d3_time.sunday.range;
  d3_time.weeks.utc = d3_time.sunday.utc.range;
  d3_time.weekOfYear = d3_time.sundayOfYear;
  function d3_locale_timeFormat(locale) {
    var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
    function d3_time_format(template) {
      var n = template.length;
      function format(date) {
        var string = [], i = -1, j = 0, c, p, f;
        while (++i < n) {
          if (template.charCodeAt(i) === 37) {
            string.push(template.slice(j, i));
            if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
            if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
            string.push(c);
            j = i + 1;
          }
        }
        string.push(template.slice(j, i));
        return string.join("");
      }
      format.parse = function(string) {
        var d = {
          y: 1900,
          m: 0,
          d: 1,
          H: 0,
          M: 0,
          S: 0,
          L: 0,
          Z: null
        }, i = d3_time_parse(d, template, string, 0);
        if (i != string.length) return null;
        if ("p" in d) d.H = d.H % 12 + d.p * 12;
        var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
        if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("w" in d && ("W" in d || "U" in d)) {
          date.setFullYear(d.y, 0, 1);
          date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
        } else date.setFullYear(d.y, d.m, d.d);
        date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
        return localZ ? date._ : date;
      };
      format.toString = function() {
        return template;
      };
      return format;
    }
    function d3_time_parse(date, template, string, j) {
      var c, p, t, i = 0, n = template.length, m = string.length;
      while (i < n) {
        if (j >= m) return -1;
        c = template.charCodeAt(i++);
        if (c === 37) {
          t = template.charAt(i++);
          p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
          if (!p || (j = p(date, string, j)) < 0) return -1;
        } else if (c != string.charCodeAt(j++)) {
          return -1;
        }
      }
      return j;
    }
    d3_time_format.utc = function(template) {
      var local = d3_time_format(template);
      function format(date) {
        try {
          d3_date = d3_date_utc;
          var utc = new d3_date();
          utc._ = date;
          return local(utc);
        } finally {
          d3_date = Date;
        }
      }
      format.parse = function(string) {
        try {
          d3_date = d3_date_utc;
          var date = local.parse(string);
          return date && date._;
        } finally {
          d3_date = Date;
        }
      };
      format.toString = local.toString;
      return format;
    };
    d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
    var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
    locale_periods.forEach(function(p, i) {
      d3_time_periodLookup.set(p.toLowerCase(), i);
    });
    var d3_time_formats = {
      a: function(d) {
        return locale_shortDays[d.getDay()];
      },
      A: function(d) {
        return locale_days[d.getDay()];
      },
      b: function(d) {
        return locale_shortMonths[d.getMonth()];
      },
      B: function(d) {
        return locale_months[d.getMonth()];
      },
      c: d3_time_format(locale_dateTime),
      d: function(d, p) {
        return d3_time_formatPad(d.getDate(), p, 2);
      },
      e: function(d, p) {
        return d3_time_formatPad(d.getDate(), p, 2);
      },
      H: function(d, p) {
        return d3_time_formatPad(d.getHours(), p, 2);
      },
      I: function(d, p) {
        return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
      },
      j: function(d, p) {
        return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
      },
      L: function(d, p) {
        return d3_time_formatPad(d.getMilliseconds(), p, 3);
      },
      m: function(d, p) {
        return d3_time_formatPad(d.getMonth() + 1, p, 2);
      },
      M: function(d, p) {
        return d3_time_formatPad(d.getMinutes(), p, 2);
      },
      p: function(d) {
        return locale_periods[+(d.getHours() >= 12)];
      },
      S: function(d, p) {
        return d3_time_formatPad(d.getSeconds(), p, 2);
      },
      U: function(d, p) {
        return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
      },
      w: function(d) {
        return d.getDay();
      },
      W: function(d, p) {
        return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
      },
      x: d3_time_format(locale_date),
      X: d3_time_format(locale_time),
      y: function(d, p) {
        return d3_time_formatPad(d.getFullYear() % 100, p, 2);
      },
      Y: function(d, p) {
        return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
      },
      Z: d3_time_zone,
      "%": function() {
        return "%";
      }
    };
    var d3_time_parsers = {
      a: d3_time_parseWeekdayAbbrev,
      A: d3_time_parseWeekday,
      b: d3_time_parseMonthAbbrev,
      B: d3_time_parseMonth,
      c: d3_time_parseLocaleFull,
      d: d3_time_parseDay,
      e: d3_time_parseDay,
      H: d3_time_parseHour24,
      I: d3_time_parseHour24,
      j: d3_time_parseDayOfYear,
      L: d3_time_parseMilliseconds,
      m: d3_time_parseMonthNumber,
      M: d3_time_parseMinutes,
      p: d3_time_parseAmPm,
      S: d3_time_parseSeconds,
      U: d3_time_parseWeekNumberSunday,
      w: d3_time_parseWeekdayNumber,
      W: d3_time_parseWeekNumberMonday,
      x: d3_time_parseLocaleDate,
      X: d3_time_parseLocaleTime,
      y: d3_time_parseYear,
      Y: d3_time_parseFullYear,
      Z: d3_time_parseZone,
      "%": d3_time_parseLiteralPercent
    };
    function d3_time_parseWeekdayAbbrev(date, string, i) {
      d3_time_dayAbbrevRe.lastIndex = 0;
      var n = d3_time_dayAbbrevRe.exec(string.slice(i));
      return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseWeekday(date, string, i) {
      d3_time_dayRe.lastIndex = 0;
      var n = d3_time_dayRe.exec(string.slice(i));
      return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseMonthAbbrev(date, string, i) {
      d3_time_monthAbbrevRe.lastIndex = 0;
      var n = d3_time_monthAbbrevRe.exec(string.slice(i));
      return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseMonth(date, string, i) {
      d3_time_monthRe.lastIndex = 0;
      var n = d3_time_monthRe.exec(string.slice(i));
      return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseLocaleFull(date, string, i) {
      return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
    }
    function d3_time_parseLocaleDate(date, string, i) {
      return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
    }
    function d3_time_parseLocaleTime(date, string, i) {
      return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
    }
    function d3_time_parseAmPm(date, string, i) {
      var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
      return n == null ? -1 : (date.p = n, i);
    }
    return d3_time_format;
  }
  var d3_time_formatPads = {
    "-": "",
    _: " ",
    "0": "0"
  }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
  function d3_time_formatPad(value, fill, width) {
    var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
    return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
  }
  function d3_time_formatRe(names) {
    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
  }
  function d3_time_formatLookup(names) {
    var map = new d3_Map(), i = -1, n = names.length;
    while (++i < n) map.set(names[i].toLowerCase(), i);
    return map;
  }
  function d3_time_parseWeekdayNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 1));
    return n ? (date.w = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseWeekNumberSunday(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i));
    return n ? (date.U = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseWeekNumberMonday(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i));
    return n ? (date.W = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseFullYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 4));
    return n ? (date.y = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
  }
  function d3_time_parseZone(date, string, i) {
    return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string, 
    i + 5) : -1;
  }
  function d3_time_expandYear(d) {
    return d + (d > 68 ? 1900 : 2e3);
  }
  function d3_time_parseMonthNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
  }
  function d3_time_parseDay(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.d = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseDayOfYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
    return n ? (date.j = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseHour24(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.H = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseMinutes(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.M = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseSeconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.S = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseMilliseconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
    return n ? (date.L = +n[0], i + n[0].length) : -1;
  }
  function d3_time_zone(d) {
    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
  }
  function d3_time_parseLiteralPercent(date, string, i) {
    d3_time_percentRe.lastIndex = 0;
    var n = d3_time_percentRe.exec(string.slice(i, i + 1));
    return n ? i + n[0].length : -1;
  }
  function d3_time_formatMulti(formats) {
    var n = formats.length, i = -1;
    while (++i < n) formats[i][0] = this(formats[i][0]);
    return function(date) {
      var i = 0, f = formats[i];
      while (!f[1](date)) f = formats[++i];
      return f[0](date);
    };
  }
  d3.locale = function(locale) {
    return {
      numberFormat: d3_locale_numberFormat(locale),
      timeFormat: d3_locale_timeFormat(locale)
    };
  };
  var d3_locale_enUS = d3.locale({
    decimal: ".",
    thousands: ",",
    grouping: [ 3 ],
    currency: [ "$", "" ],
    dateTime: "%a %b %e %X %Y",
    date: "%m/%d/%Y",
    time: "%H:%M:%S",
    periods: [ "AM", "PM" ],
    days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
    shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
    months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
    shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
  });
  d3.format = d3_locale_enUS.numberFormat;
  d3.geo = {};
  function d3_adder() {}
  d3_adder.prototype = {
    s: 0,
    t: 0,
    add: function(y) {
      d3_adderSum(y, this.t, d3_adderTemp);
      d3_adderSum(d3_adderTemp.s, this.s, this);
      if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
    },
    reset: function() {
      this.s = this.t = 0;
    },
    valueOf: function() {
      return this.s;
    }
  };
  var d3_adderTemp = new d3_adder();
  function d3_adderSum(a, b, o) {
    var x = o.s = a + b, bv = x - a, av = x - bv;
    o.t = a - av + (b - bv);
  }
  d3.geo.stream = function(object, listener) {
    if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
      d3_geo_streamObjectType[object.type](object, listener);
    } else {
      d3_geo_streamGeometry(object, listener);
    }
  };
  function d3_geo_streamGeometry(geometry, listener) {
    if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
      d3_geo_streamGeometryType[geometry.type](geometry, listener);
    }
  }
  var d3_geo_streamObjectType = {
    Feature: function(feature, listener) {
      d3_geo_streamGeometry(feature.geometry, listener);
    },
    FeatureCollection: function(object, listener) {
      var features = object.features, i = -1, n = features.length;
      while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
    }
  };
  var d3_geo_streamGeometryType = {
    Sphere: function(object, listener) {
      listener.sphere();
    },
    Point: function(object, listener) {
      object = object.coordinates;
      listener.point(object[0], object[1], object[2]);
    },
    MultiPoint: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
    },
    LineString: function(object, listener) {
      d3_geo_streamLine(object.coordinates, listener, 0);
    },
    MultiLineString: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
    },
    Polygon: function(object, listener) {
      d3_geo_streamPolygon(object.coordinates, listener);
    },
    MultiPolygon: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
    },
    GeometryCollection: function(object, listener) {
      var geometries = object.geometries, i = -1, n = geometries.length;
      while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
    }
  };
  function d3_geo_streamLine(coordinates, listener, closed) {
    var i = -1, n = coordinates.length - closed, coordinate;
    listener.lineStart();
    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
    listener.lineEnd();
  }
  function d3_geo_streamPolygon(coordinates, listener) {
    var i = -1, n = coordinates.length;
    listener.polygonStart();
    while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
    listener.polygonEnd();
  }
  d3.geo.area = function(object) {
    d3_geo_areaSum = 0;
    d3.geo.stream(object, d3_geo_area);
    return d3_geo_areaSum;
  };
  var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
  var d3_geo_area = {
    sphere: function() {
      d3_geo_areaSum += 4 * π;
    },
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_areaRingSum.reset();
      d3_geo_area.lineStart = d3_geo_areaRingStart;
    },
    polygonEnd: function() {
      var area = 2 * d3_geo_areaRingSum;
      d3_geo_areaSum += area < 0 ? 4 * π + area : area;
      d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
    }
  };
  function d3_geo_areaRingStart() {
    var λ00, φ00, λ0, cosφ0, sinφ0;
    d3_geo_area.point = function(λ, φ) {
      d3_geo_area.point = nextPoint;
      λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), 
      sinφ0 = Math.sin(φ);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      φ = φ * d3_radians / 2 + π / 4;
      var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
      d3_geo_areaRingSum.add(Math.atan2(v, u));
      λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
    }
    d3_geo_area.lineEnd = function() {
      nextPoint(λ00, φ00);
    };
  }
  function d3_geo_cartesian(spherical) {
    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
  }
  function d3_geo_cartesianDot(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
  }
  function d3_geo_cartesianCross(a, b) {
    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
  }
  function d3_geo_cartesianAdd(a, b) {
    a[0] += b[0];
    a[1] += b[1];
    a[2] += b[2];
  }
  function d3_geo_cartesianScale(vector, k) {
    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
  }
  function d3_geo_cartesianNormalize(d) {
    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
    d[0] /= l;
    d[1] /= l;
    d[2] /= l;
  }
  function d3_geo_spherical(cartesian) {
    return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
  }
  function d3_geo_sphericalEqual(a, b) {
    return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
  }
  d3.geo.bounds = function() {
    var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
    var bound = {
      point: point,
      lineStart: lineStart,
      lineEnd: lineEnd,
      polygonStart: function() {
        bound.point = ringPoint;
        bound.lineStart = ringStart;
        bound.lineEnd = ringEnd;
        dλSum = 0;
        d3_geo_area.polygonStart();
      },
      polygonEnd: function() {
        d3_geo_area.polygonEnd();
        bound.point = point;
        bound.lineStart = lineStart;
        bound.lineEnd = lineEnd;
        if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
        range[0] = λ0, range[1] = λ1;
      }
    };
    function point(λ, φ) {
      ranges.push(range = [ λ0 = λ, λ1 = λ ]);
      if (φ < φ0) φ0 = φ;
      if (φ > φ1) φ1 = φ;
    }
    function linePoint(λ, φ) {
      var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
      if (p0) {
        var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
        d3_geo_cartesianNormalize(inflection);
        inflection = d3_geo_spherical(inflection);
        var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
        if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
          var φi = inflection[1] * d3_degrees;
          if (φi > φ1) φ1 = φi;
        } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
          var φi = -inflection[1] * d3_degrees;
          if (φi < φ0) φ0 = φi;
        } else {
          if (φ < φ0) φ0 = φ;
          if (φ > φ1) φ1 = φ;
        }
        if (antimeridian) {
          if (λ < λ_) {
            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
          } else {
            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
          }
        } else {
          if (λ1 >= λ0) {
            if (λ < λ0) λ0 = λ;
            if (λ > λ1) λ1 = λ;
          } else {
            if (λ > λ_) {
              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
            } else {
              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
            }
          }
        }
      } else {
        point(λ, φ);
      }
      p0 = p, λ_ = λ;
    }
    function lineStart() {
      bound.point = linePoint;
    }
    function lineEnd() {
      range[0] = λ0, range[1] = λ1;
      bound.point = point;
      p0 = null;
    }
    function ringPoint(λ, φ) {
      if (p0) {
        var dλ = λ - λ_;
        dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
      } else λ__ = λ, φ__ = φ;
      d3_geo_area.point(λ, φ);
      linePoint(λ, φ);
    }
    function ringStart() {
      d3_geo_area.lineStart();
    }
    function ringEnd() {
      ringPoint(λ__, φ__);
      d3_geo_area.lineEnd();
      if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
      range[0] = λ0, range[1] = λ1;
      p0 = null;
    }
    function angle(λ0, λ1) {
      return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
    }
    function compareRanges(a, b) {
      return a[0] - b[0];
    }
    function withinRange(x, range) {
      return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
    }
    return function(feature) {
      φ1 = λ1 = -(λ0 = φ0 = Infinity);
      ranges = [];
      d3.geo.stream(feature, bound);
      var n = ranges.length;
      if (n) {
        ranges.sort(compareRanges);
        for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
          b = ranges[i];
          if (withinRange(b[0], a) || withinRange(b[1], a)) {
            if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
            if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
          } else {
            merged.push(a = b);
          }
        }
        var best = -Infinity, dλ;
        for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
          b = merged[i];
          if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
        }
      }
      ranges = range = null;
      return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
    };
  }();
  d3.geo.centroid = function(object) {
    d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
    d3.geo.stream(object, d3_geo_centroid);
    var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
    if (m < ε2) {
      x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
      if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
      m = x * x + y * y + z * z;
      if (m < ε2) return [ NaN, NaN ];
    }
    return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
  };
  var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
  var d3_geo_centroid = {
    sphere: d3_noop,
    point: d3_geo_centroidPoint,
    lineStart: d3_geo_centroidLineStart,
    lineEnd: d3_geo_centroidLineEnd,
    polygonStart: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
    }
  };
  function d3_geo_centroidPoint(λ, φ) {
    λ *= d3_radians;
    var cosφ = Math.cos(φ *= d3_radians);
    d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
  }
  function d3_geo_centroidPointXYZ(x, y, z) {
    ++d3_geo_centroidW0;
    d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
    d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
    d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
  }
  function d3_geo_centroidLineStart() {
    var x0, y0, z0;
    d3_geo_centroid.point = function(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroid.point = nextPoint;
      d3_geo_centroidPointXYZ(x0, y0, z0);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
      d3_geo_centroidW1 += w;
      d3_geo_centroidX1 += w * (x0 + (x0 = x));
      d3_geo_centroidY1 += w * (y0 + (y0 = y));
      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
      d3_geo_centroidPointXYZ(x0, y0, z0);
    }
  }
  function d3_geo_centroidLineEnd() {
    d3_geo_centroid.point = d3_geo_centroidPoint;
  }
  function d3_geo_centroidRingStart() {
    var λ00, φ00, x0, y0, z0;
    d3_geo_centroid.point = function(λ, φ) {
      λ00 = λ, φ00 = φ;
      d3_geo_centroid.point = nextPoint;
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroidPointXYZ(x0, y0, z0);
    };
    d3_geo_centroid.lineEnd = function() {
      nextPoint(λ00, φ00);
      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
      d3_geo_centroid.point = d3_geo_centroidPoint;
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
      d3_geo_centroidX2 += v * cx;
      d3_geo_centroidY2 += v * cy;
      d3_geo_centroidZ2 += v * cz;
      d3_geo_centroidW1 += w;
      d3_geo_centroidX1 += w * (x0 + (x0 = x));
      d3_geo_centroidY1 += w * (y0 + (y0 = y));
      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
      d3_geo_centroidPointXYZ(x0, y0, z0);
    }
  }
  function d3_geo_compose(a, b) {
    function compose(x, y) {
      return x = a(x, y), b(x[0], x[1]);
    }
    if (a.invert && b.invert) compose.invert = function(x, y) {
      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
    };
    return compose;
  }
  function d3_true() {
    return true;
  }
  function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
    var subject = [], clip = [];
    segments.forEach(function(segment) {
      if ((n = segment.length - 1) <= 0) return;
      var n, p0 = segment[0], p1 = segment[n];
      if (d3_geo_sphericalEqual(p0, p1)) {
        listener.lineStart();
        for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
        listener.lineEnd();
        return;
      }
      var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
      a.o = b;
      subject.push(a);
      clip.push(b);
      a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
      b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
      a.o = b;
      subject.push(a);
      clip.push(b);
    });
    clip.sort(compare);
    d3_geo_clipPolygonLinkCircular(subject);
    d3_geo_clipPolygonLinkCircular(clip);
    if (!subject.length) return;
    for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
      clip[i].e = entry = !entry;
    }
    var start = subject[0], points, point;
    while (1) {
      var current = start, isSubject = true;
      while (current.v) if ((current = current.n) === start) return;
      points = current.z;
      listener.lineStart();
      do {
        current.v = current.o.v = true;
        if (current.e) {
          if (isSubject) {
            for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.x, current.n.x, 1, listener);
          }
          current = current.n;
        } else {
          if (isSubject) {
            points = current.p.z;
            for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.x, current.p.x, -1, listener);
          }
          current = current.p;
        }
        current = current.o;
        points = current.z;
        isSubject = !isSubject;
      } while (!current.v);
      listener.lineEnd();
    }
  }
  function d3_geo_clipPolygonLinkCircular(array) {
    if (!(n = array.length)) return;
    var n, i = 0, a = array[0], b;
    while (++i < n) {
      a.n = b = array[i];
      b.p = a;
      a = b;
    }
    a.n = b = array[0];
    b.p = a;
  }
  function d3_geo_clipPolygonIntersection(point, points, other, entry) {
    this.x = point;
    this.z = points;
    this.o = other;
    this.e = entry;
    this.v = false;
    this.n = this.p = null;
  }
  function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
    return function(rotate, listener) {
      var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          clip.point = pointRing;
          clip.lineStart = ringStart;
          clip.lineEnd = ringEnd;
          segments = [];
          polygon = [];
        },
        polygonEnd: function() {
          clip.point = point;
          clip.lineStart = lineStart;
          clip.lineEnd = lineEnd;
          segments = d3.merge(segments);
          var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
          if (segments.length) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
          } else if (clipStartInside) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            listener.lineStart();
            interpolate(null, null, 1, listener);
            listener.lineEnd();
          }
          if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
          segments = polygon = null;
        },
        sphere: function() {
          listener.polygonStart();
          listener.lineStart();
          interpolate(null, null, 1, listener);
          listener.lineEnd();
          listener.polygonEnd();
        }
      };
      function point(λ, φ) {
        var point = rotate(λ, φ);
        if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
      }
      function pointLine(λ, φ) {
        var point = rotate(λ, φ);
        line.point(point[0], point[1]);
      }
      function lineStart() {
        clip.point = pointLine;
        line.lineStart();
      }
      function lineEnd() {
        clip.point = point;
        line.lineEnd();
      }
      var segments;
      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
      function pointRing(λ, φ) {
        ring.push([ λ, φ ]);
        var point = rotate(λ, φ);
        ringListener.point(point[0], point[1]);
      }
      function ringStart() {
        ringListener.lineStart();
        ring = [];
      }
      function ringEnd() {
        pointRing(ring[0][0], ring[0][1]);
        ringListener.lineEnd();
        var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
        ring.pop();
        polygon.push(ring);
        ring = null;
        if (!n) return;
        if (clean & 1) {
          segment = ringSegments[0];
          var n = segment.length - 1, i = -1, point;
          if (n > 0) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            listener.lineStart();
            while (++i < n) listener.point((point = segment[i])[0], point[1]);
            listener.lineEnd();
          }
          return;
        }
        if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
        segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
      }
      return clip;
    };
  }
  function d3_geo_clipSegmentLength1(segment) {
    return segment.length > 1;
  }
  function d3_geo_clipBufferListener() {
    var lines = [], line;
    return {
      lineStart: function() {
        lines.push(line = []);
      },
      point: function(λ, φ) {
        line.push([ λ, φ ]);
      },
      lineEnd: d3_noop,
      buffer: function() {
        var buffer = lines;
        lines = [];
        line = null;
        return buffer;
      },
      rejoin: function() {
        if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
      }
    };
  }
  function d3_geo_clipSort(a, b) {
    return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
  }
  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
  function d3_geo_clipAntimeridianLine(listener) {
    var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
    return {
      lineStart: function() {
        listener.lineStart();
        clean = 1;
      },
      point: function(λ1, φ1) {
        var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
        if (abs(dλ - π) < ε) {
          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          listener.point(λ1, φ0);
          clean = 0;
        } else if (sλ0 !== sλ1 && dλ >= π) {
          if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
          if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
          φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          clean = 0;
        }
        listener.point(λ0 = λ1, φ0 = φ1);
        sλ0 = sλ1;
      },
      lineEnd: function() {
        listener.lineEnd();
        λ0 = φ0 = NaN;
      },
      clean: function() {
        return 2 - clean;
      }
    };
  }
  function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
    var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
    return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
  }
  function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
    var φ;
    if (from == null) {
      φ = direction * halfπ;
      listener.point(-π, φ);
      listener.point(0, φ);
      listener.point(π, φ);
      listener.point(π, 0);
      listener.point(π, -φ);
      listener.point(0, -φ);
      listener.point(-π, -φ);
      listener.point(-π, 0);
      listener.point(-π, φ);
    } else if (abs(from[0] - to[0]) > ε) {
      var s = from[0] < to[0] ? π : -π;
      φ = direction * s / 2;
      listener.point(-s, φ);
      listener.point(0, φ);
      listener.point(s, φ);
    } else {
      listener.point(to[0], to[1]);
    }
  }
  function d3_geo_pointInPolygon(point, polygon) {
    var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
    d3_geo_areaRingSum.reset();
    for (var i = 0, n = polygon.length; i < n; ++i) {
      var ring = polygon[i], m = ring.length;
      if (!m) continue;
      var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
      while (true) {
        if (j === m) j = 0;
        point = ring[j];
        var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
        d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
        polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
        if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
          var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
          d3_geo_cartesianNormalize(arc);
          var intersection = d3_geo_cartesianCross(meridianNormal, arc);
          d3_geo_cartesianNormalize(intersection);
          var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
          if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
            winding += antimeridian ^ dλ >= 0 ? 1 : -1;
          }
        }
        if (!j++) break;
        λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
      }
    }
    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
  }
  function d3_geo_clipCircle(radius) {
    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
    return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
    function visible(λ, φ) {
      return Math.cos(λ) * Math.cos(φ) > cr;
    }
    function clipLine(listener) {
      var point0, c0, v0, v00, clean;
      return {
        lineStart: function() {
          v00 = v0 = false;
          clean = 1;
        },
        point: function(λ, φ) {
          var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
          if (!point0 && (v00 = v0 = v)) listener.lineStart();
          if (v !== v0) {
            point2 = intersect(point0, point1);
            if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
              point1[0] += ε;
              point1[1] += ε;
              v = visible(point1[0], point1[1]);
            }
          }
          if (v !== v0) {
            clean = 0;
            if (v) {
              listener.lineStart();
              point2 = intersect(point1, point0);
              listener.point(point2[0], point2[1]);
            } else {
              point2 = intersect(point0, point1);
              listener.point(point2[0], point2[1]);
              listener.lineEnd();
            }
            point0 = point2;
          } else if (notHemisphere && point0 && smallRadius ^ v) {
            var t;
            if (!(c & c0) && (t = intersect(point1, point0, true))) {
              clean = 0;
              if (smallRadius) {
                listener.lineStart();
                listener.point(t[0][0], t[0][1]);
                listener.point(t[1][0], t[1][1]);
                listener.lineEnd();
              } else {
                listener.point(t[1][0], t[1][1]);
                listener.lineEnd();
                listener.lineStart();
                listener.point(t[0][0], t[0][1]);
              }
            }
          }
          if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
            listener.point(point1[0], point1[1]);
          }
          point0 = point1, v0 = v, c0 = c;
        },
        lineEnd: function() {
          if (v0) listener.lineEnd();
          point0 = null;
        },
        clean: function() {
          return clean | (v00 && v0) << 1;
        }
      };
    }
    function intersect(a, b, two) {
      var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
      var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
      if (!determinant) return !two && a;
      var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
      d3_geo_cartesianAdd(A, B);
      var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
      if (t2 < 0) return;
      var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
      d3_geo_cartesianAdd(q, A);
      q = d3_geo_spherical(q);
      if (!two) return q;
      var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
      if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
      var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
      if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
        var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
        d3_geo_cartesianAdd(q1, A);
        return [ q, d3_geo_spherical(q1) ];
      }
    }
    function code(λ, φ) {
      var r = smallRadius ? radius : π - radius, code = 0;
      if (λ < -r) code |= 1; else if (λ > r) code |= 2;
      if (φ < -r) code |= 4; else if (φ > r) code |= 8;
      return code;
    }
  }
  function d3_geom_clipLine(x0, y0, x1, y1) {
    return function(line) {
      var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
      r = x0 - ax;
      if (!dx && r > 0) return;
      r /= dx;
      if (dx < 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      } else if (dx > 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      }
      r = x1 - ax;
      if (!dx && r < 0) return;
      r /= dx;
      if (dx < 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      } else if (dx > 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      }
      r = y0 - ay;
      if (!dy && r > 0) return;
      r /= dy;
      if (dy < 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      } else if (dy > 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      }
      r = y1 - ay;
      if (!dy && r < 0) return;
      r /= dy;
      if (dy < 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      } else if (dy > 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      }
      if (t0 > 0) line.a = {
        x: ax + t0 * dx,
        y: ay + t0 * dy
      };
      if (t1 < 1) line.b = {
        x: ax + t1 * dx,
        y: ay + t1 * dy
      };
      return line;
    };
  }
  var d3_geo_clipExtentMAX = 1e9;
  d3.geo.clipExtent = function() {
    var x0, y0, x1, y1, stream, clip, clipExtent = {
      stream: function(output) {
        if (stream) stream.valid = false;
        stream = clip(output);
        stream.valid = true;
        return stream;
      },
      extent: function(_) {
        if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
        clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
        if (stream) stream.valid = false, stream = null;
        return clipExtent;
      }
    };
    return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
  };
  function d3_geo_clipExtent(x0, y0, x1, y1) {
    return function(listener) {
      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          listener = bufferListener;
          segments = [];
          polygon = [];
          clean = true;
        },
        polygonEnd: function() {
          listener = listener_;
          segments = d3.merge(segments);
          var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
          if (inside || visible) {
            listener.polygonStart();
            if (inside) {
              listener.lineStart();
              interpolate(null, null, 1, listener);
              listener.lineEnd();
            }
            if (visible) {
              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
            }
            listener.polygonEnd();
          }
          segments = polygon = ring = null;
        }
      };
      function insidePolygon(p) {
        var wn = 0, n = polygon.length, y = p[1];
        for (var i = 0; i < n; ++i) {
          for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
            b = v[j];
            if (a[1] <= y) {
              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
            } else {
              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
            }
            a = b;
          }
        }
        return wn !== 0;
      }
      function interpolate(from, to, direction, listener) {
        var a = 0, a1 = 0;
        if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
          do {
            listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
          } while ((a = (a + direction + 4) % 4) !== a1);
        } else {
          listener.point(to[0], to[1]);
        }
      }
      function pointVisible(x, y) {
        return x0 <= x && x <= x1 && y0 <= y && y <= y1;
      }
      function point(x, y) {
        if (pointVisible(x, y)) listener.point(x, y);
      }
      var x__, y__, v__, x_, y_, v_, first, clean;
      function lineStart() {
        clip.point = linePoint;
        if (polygon) polygon.push(ring = []);
        first = true;
        v_ = false;
        x_ = y_ = NaN;
      }
      function lineEnd() {
        if (segments) {
          linePoint(x__, y__);
          if (v__ && v_) bufferListener.rejoin();
          segments.push(bufferListener.buffer());
        }
        clip.point = point;
        if (v_) listener.lineEnd();
      }
      function linePoint(x, y) {
        x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
        y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
        var v = pointVisible(x, y);
        if (polygon) ring.push([ x, y ]);
        if (first) {
          x__ = x, y__ = y, v__ = v;
          first = false;
          if (v) {
            listener.lineStart();
            listener.point(x, y);
          }
        } else {
          if (v && v_) listener.point(x, y); else {
            var l = {
              a: {
                x: x_,
                y: y_
              },
              b: {
                x: x,
                y: y
              }
            };
            if (clipLine(l)) {
              if (!v_) {
                listener.lineStart();
                listener.point(l.a.x, l.a.y);
              }
              listener.point(l.b.x, l.b.y);
              if (!v) listener.lineEnd();
              clean = false;
            } else if (v) {
              listener.lineStart();
              listener.point(x, y);
              clean = false;
            }
          }
        }
        x_ = x, y_ = y, v_ = v;
      }
      return clip;
    };
    function corner(p, direction) {
      return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
    }
    function compare(a, b) {
      return comparePoints(a.x, b.x);
    }
    function comparePoints(a, b) {
      var ca = corner(a, 1), cb = corner(b, 1);
      return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
    }
  }
  function d3_geo_conic(projectAt) {
    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
    p.parallels = function(_) {
      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
    };
    return p;
  }
  function d3_geo_conicEqualArea(φ0, φ1) {
    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
    function forward(λ, φ) {
      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = ρ0 - y;
      return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
    };
    return forward;
  }
  (d3.geo.conicEqualArea = function() {
    return d3_geo_conic(d3_geo_conicEqualArea);
  }).raw = d3_geo_conicEqualArea;
  d3.geo.albers = function() {
    return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
  };
  d3.geo.albersUsa = function() {
    var lower48 = d3.geo.albers();
    var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
    var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
    var point, pointStream = {
      point: function(x, y) {
        point = [ x, y ];
      }
    }, lower48Point, alaskaPoint, hawaiiPoint;
    function albersUsa(coordinates) {
      var x = coordinates[0], y = coordinates[1];
      point = null;
      (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
      return point;
    }
    albersUsa.invert = function(coordinates) {
      var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
      return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
    };
    albersUsa.stream = function(stream) {
      var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
      return {
        point: function(x, y) {
          lower48Stream.point(x, y);
          alaskaStream.point(x, y);
          hawaiiStream.point(x, y);
        },
        sphere: function() {
          lower48Stream.sphere();
          alaskaStream.sphere();
          hawaiiStream.sphere();
        },
        lineStart: function() {
          lower48Stream.lineStart();
          alaskaStream.lineStart();
          hawaiiStream.lineStart();
        },
        lineEnd: function() {
          lower48Stream.lineEnd();
          alaskaStream.lineEnd();
          hawaiiStream.lineEnd();
        },
        polygonStart: function() {
          lower48Stream.polygonStart();
          alaskaStream.polygonStart();
          hawaiiStream.polygonStart();
        },
        polygonEnd: function() {
          lower48Stream.polygonEnd();
          alaskaStream.polygonEnd();
          hawaiiStream.polygonEnd();
        }
      };
    };
    albersUsa.precision = function(_) {
      if (!arguments.length) return lower48.precision();
      lower48.precision(_);
      alaska.precision(_);
      hawaii.precision(_);
      return albersUsa;
    };
    albersUsa.scale = function(_) {
      if (!arguments.length) return lower48.scale();
      lower48.scale(_);
      alaska.scale(_ * .35);
      hawaii.scale(_);
      return albersUsa.translate(lower48.translate());
    };
    albersUsa.translate = function(_) {
      if (!arguments.length) return lower48.translate();
      var k = lower48.scale(), x = +_[0], y = +_[1];
      lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
      alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
      hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
      return albersUsa;
    };
    return albersUsa.scale(1070);
  };
  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_pathAreaPolygon = 0;
      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
      d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
    }
  };
  function d3_geo_pathAreaRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathArea.point = function(x, y) {
      d3_geo_pathArea.point = nextPoint;
      x00 = x0 = x, y00 = y0 = y;
    };
    function nextPoint(x, y) {
      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
      x0 = x, y0 = y;
    }
    d3_geo_pathArea.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
  var d3_geo_pathBounds = {
    point: d3_geo_pathBoundsPoint,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: d3_noop,
    polygonEnd: d3_noop
  };
  function d3_geo_pathBoundsPoint(x, y) {
    if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
    if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
    if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
    if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
  }
  function d3_geo_pathBuffer() {
    var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointCircle = d3_geo_pathBufferCircle(_);
        return stream;
      },
      result: function() {
        if (buffer.length) {
          var result = buffer.join("");
          buffer = [];
          return result;
        }
      }
    };
    function point(x, y) {
      buffer.push("M", x, ",", y, pointCircle);
    }
    function pointLineStart(x, y) {
      buffer.push("M", x, ",", y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      buffer.push("L", x, ",", y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      buffer.push("Z");
    }
    return stream;
  }
  function d3_geo_pathBufferCircle(radius) {
    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
  }
  var d3_geo_pathCentroid = {
    point: d3_geo_pathCentroidPoint,
    lineStart: d3_geo_pathCentroidLineStart,
    lineEnd: d3_geo_pathCentroidLineEnd,
    polygonStart: function() {
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
    }
  };
  function d3_geo_pathCentroidPoint(x, y) {
    d3_geo_centroidX0 += x;
    d3_geo_centroidY0 += y;
    ++d3_geo_centroidZ0;
  }
  function d3_geo_pathCentroidLineStart() {
    var x0, y0;
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX1 += z * (x0 + x) / 2;
      d3_geo_centroidY1 += z * (y0 + y) / 2;
      d3_geo_centroidZ1 += z;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    }
  }
  function d3_geo_pathCentroidLineEnd() {
    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
  }
  function d3_geo_pathCentroidRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX1 += z * (x0 + x) / 2;
      d3_geo_centroidY1 += z * (y0 + y) / 2;
      d3_geo_centroidZ1 += z;
      z = y0 * x - x0 * y;
      d3_geo_centroidX2 += z * (x0 + x);
      d3_geo_centroidY2 += z * (y0 + y);
      d3_geo_centroidZ2 += z * 3;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    }
    d3_geo_pathCentroid.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  function d3_geo_pathContext(context) {
    var pointRadius = 4.5;
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointRadius = _;
        return stream;
      },
      result: d3_noop
    };
    function point(x, y) {
      context.moveTo(x + pointRadius, y);
      context.arc(x, y, pointRadius, 0, τ);
    }
    function pointLineStart(x, y) {
      context.moveTo(x, y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      context.lineTo(x, y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      context.closePath();
    }
    return stream;
  }
  function d3_geo_resample(project) {
    var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
    function resample(stream) {
      return (maxDepth ? resampleRecursive : resampleNone)(stream);
    }
    function resampleNone(stream) {
      return d3_geo_transformPoint(stream, function(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      });
    }
    function resampleRecursive(stream) {
      var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
      var resample = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          stream.polygonStart();
          resample.lineStart = ringStart;
        },
        polygonEnd: function() {
          stream.polygonEnd();
          resample.lineStart = lineStart;
        }
      };
      function point(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      }
      function lineStart() {
        x0 = NaN;
        resample.point = linePoint;
        stream.lineStart();
      }
      function linePoint(λ, φ) {
        var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
        stream.point(x0, y0);
      }
      function lineEnd() {
        resample.point = point;
        stream.lineEnd();
      }
      function ringStart() {
        lineStart();
        resample.point = ringPoint;
        resample.lineEnd = ringEnd;
      }
      function ringPoint(λ, φ) {
        linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
        resample.point = linePoint;
      }
      function ringEnd() {
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
        resample.lineEnd = lineEnd;
        lineEnd();
      }
      return resample;
    }
    function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
      var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
      if (d2 > 4 * δ2 && depth--) {
        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
        if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
          resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
          stream.point(x2, y2);
          resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
        }
      }
    }
    resample.precision = function(_) {
      if (!arguments.length) return Math.sqrt(δ2);
      maxDepth = (δ2 = _ * _) > 0 && 16;
      return resample;
    };
    return resample;
  }
  d3.geo.path = function() {
    var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
    function path(object) {
      if (object) {
        if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
        if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
        d3.geo.stream(object, cacheStream);
      }
      return contextStream.result();
    }
    path.area = function(object) {
      d3_geo_pathAreaSum = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathArea));
      return d3_geo_pathAreaSum;
    };
    path.centroid = function(object) {
      d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
      return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
    };
    path.bounds = function(object) {
      d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
      d3.geo.stream(object, projectStream(d3_geo_pathBounds));
      return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
    };
    path.projection = function(_) {
      if (!arguments.length) return projection;
      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
      return reset();
    };
    path.context = function(_) {
      if (!arguments.length) return context;
      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
      if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
      return reset();
    };
    path.pointRadius = function(_) {
      if (!arguments.length) return pointRadius;
      pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
      return path;
    };
    function reset() {
      cacheStream = null;
      return path;
    }
    return path.projection(d3.geo.albersUsa()).context(null);
  };
  function d3_geo_pathProjectStream(project) {
    var resample = d3_geo_resample(function(x, y) {
      return project([ x * d3_degrees, y * d3_degrees ]);
    });
    return function(stream) {
      return d3_geo_projectionRadians(resample(stream));
    };
  }
  d3.geo.transform = function(methods) {
    return {
      stream: function(stream) {
        var transform = new d3_geo_transform(stream);
        for (var k in methods) transform[k] = methods[k];
        return transform;
      }
    };
  };
  function d3_geo_transform(stream) {
    this.stream = stream;
  }
  d3_geo_transform.prototype = {
    point: function(x, y) {
      this.stream.point(x, y);
    },
    sphere: function() {
      this.stream.sphere();
    },
    lineStart: function() {
      this.stream.lineStart();
    },
    lineEnd: function() {
      this.stream.lineEnd();
    },
    polygonStart: function() {
      this.stream.polygonStart();
    },
    polygonEnd: function() {
      this.stream.polygonEnd();
    }
  };
  function d3_geo_transformPoint(stream, point) {
    return {
      point: point,
      sphere: function() {
        stream.sphere();
      },
      lineStart: function() {
        stream.lineStart();
      },
      lineEnd: function() {
        stream.lineEnd();
      },
      polygonStart: function() {
        stream.polygonStart();
      },
      polygonEnd: function() {
        stream.polygonEnd();
      }
    };
  }
  d3.geo.projection = d3_geo_projection;
  d3.geo.projectionMutator = d3_geo_projectionMutator;
  function d3_geo_projection(project) {
    return d3_geo_projectionMutator(function() {
      return project;
    })();
  }
  function d3_geo_projectionMutator(projectAt) {
    var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
      x = project(x, y);
      return [ x[0] * k + δx, δy - x[1] * k ];
    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
    function projection(point) {
      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
      return [ point[0] * k + δx, δy - point[1] * k ];
    }
    function invert(point) {
      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
      return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
    }
    projection.stream = function(output) {
      if (stream) stream.valid = false;
      stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
      stream.valid = true;
      return stream;
    };
    projection.clipAngle = function(_) {
      if (!arguments.length) return clipAngle;
      preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
      return invalidate();
    };
    projection.clipExtent = function(_) {
      if (!arguments.length) return clipExtent;
      clipExtent = _;
      postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
      return invalidate();
    };
    projection.scale = function(_) {
      if (!arguments.length) return k;
      k = +_;
      return reset();
    };
    projection.translate = function(_) {
      if (!arguments.length) return [ x, y ];
      x = +_[0];
      y = +_[1];
      return reset();
    };
    projection.center = function(_) {
      if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
      λ = _[0] % 360 * d3_radians;
      φ = _[1] % 360 * d3_radians;
      return reset();
    };
    projection.rotate = function(_) {
      if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
      δλ = _[0] % 360 * d3_radians;
      δφ = _[1] % 360 * d3_radians;
      δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
      return reset();
    };
    d3.rebind(projection, projectResample, "precision");
    function reset() {
      projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
      var center = project(λ, φ);
      δx = x - center[0] * k;
      δy = y + center[1] * k;
      return invalidate();
    }
    function invalidate() {
      if (stream) stream.valid = false, stream = null;
      return projection;
    }
    return function() {
      project = projectAt.apply(this, arguments);
      projection.invert = project.invert && invert;
      return reset();
    };
  }
  function d3_geo_projectionRadians(stream) {
    return d3_geo_transformPoint(stream, function(x, y) {
      stream.point(x * d3_radians, y * d3_radians);
    });
  }
  function d3_geo_equirectangular(λ, φ) {
    return [ λ, φ ];
  }
  (d3.geo.equirectangular = function() {
    return d3_geo_projection(d3_geo_equirectangular);
  }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
  d3.geo.rotation = function(rotate) {
    rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
    function forward(coordinates) {
      coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
    }
    forward.invert = function(coordinates) {
      coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
    };
    return forward;
  };
  function d3_geo_identityRotation(λ, φ) {
    return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
  }
  d3_geo_identityRotation.invert = d3_geo_equirectangular;
  function d3_geo_rotation(δλ, δφ, δγ) {
    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
  }
  function d3_geo_forwardRotationλ(δλ) {
    return function(λ, φ) {
      return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
    };
  }
  function d3_geo_rotationλ(δλ) {
    var rotation = d3_geo_forwardRotationλ(δλ);
    rotation.invert = d3_geo_forwardRotationλ(-δλ);
    return rotation;
  }
  function d3_geo_rotationφγ(δφ, δγ) {
    var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
    function rotation(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
    }
    rotation.invert = function(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
    };
    return rotation;
  }
  d3.geo.circle = function() {
    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
    function circle() {
      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
      interpolate(null, null, 1, {
        point: function(x, y) {
          ring.push(x = rotate(x, y));
          x[0] *= d3_degrees, x[1] *= d3_degrees;
        }
      });
      return {
        type: "Polygon",
        coordinates: [ ring ]
      };
    }
    circle.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return circle;
    };
    circle.angle = function(x) {
      if (!arguments.length) return angle;
      interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
      return circle;
    };
    circle.precision = function(_) {
      if (!arguments.length) return precision;
      interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
      return circle;
    };
    return circle.angle(90);
  };
  function d3_geo_circleInterpolate(radius, precision) {
    var cr = Math.cos(radius), sr = Math.sin(radius);
    return function(from, to, direction, listener) {
      var step = direction * precision;
      if (from != null) {
        from = d3_geo_circleAngle(cr, from);
        to = d3_geo_circleAngle(cr, to);
        if (direction > 0 ? from < to : from > to) from += direction * τ;
      } else {
        from = radius + direction * τ;
        to = radius - .5 * step;
      }
      for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
        listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
      }
    };
  }
  function d3_geo_circleAngle(cr, point) {
    var a = d3_geo_cartesian(point);
    a[0] -= cr;
    d3_geo_cartesianNormalize(a);
    var angle = d3_acos(-a[1]);
    return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
  }
  d3.geo.distance = function(a, b) {
    var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
    return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
  };
  d3.geo.graticule = function() {
    var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
    function graticule() {
      return {
        type: "MultiLineString",
        coordinates: lines()
      };
    }
    function lines() {
      return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
        return abs(x % DX) > ε;
      }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
        return abs(y % DY) > ε;
      }).map(y));
    }
    graticule.lines = function() {
      return lines().map(function(coordinates) {
        return {
          type: "LineString",
          coordinates: coordinates
        };
      });
    };
    graticule.outline = function() {
      return {
        type: "Polygon",
        coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
      };
    };
    graticule.extent = function(_) {
      if (!arguments.length) return graticule.minorExtent();
      return graticule.majorExtent(_).minorExtent(_);
    };
    graticule.majorExtent = function(_) {
      if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
      X0 = +_[0][0], X1 = +_[1][0];
      Y0 = +_[0][1], Y1 = +_[1][1];
      if (X0 > X1) _ = X0, X0 = X1, X1 = _;
      if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
      return graticule.precision(precision);
    };
    graticule.minorExtent = function(_) {
      if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
      x0 = +_[0][0], x1 = +_[1][0];
      y0 = +_[0][1], y1 = +_[1][1];
      if (x0 > x1) _ = x0, x0 = x1, x1 = _;
      if (y0 > y1) _ = y0, y0 = y1, y1 = _;
      return graticule.precision(precision);
    };
    graticule.step = function(_) {
      if (!arguments.length) return graticule.minorStep();
      return graticule.majorStep(_).minorStep(_);
    };
    graticule.majorStep = function(_) {
      if (!arguments.length) return [ DX, DY ];
      DX = +_[0], DY = +_[1];
      return graticule;
    };
    graticule.minorStep = function(_) {
      if (!arguments.length) return [ dx, dy ];
      dx = +_[0], dy = +_[1];
      return graticule;
    };
    graticule.precision = function(_) {
      if (!arguments.length) return precision;
      precision = +_;
      x = d3_geo_graticuleX(y0, y1, 90);
      y = d3_geo_graticuleY(x0, x1, precision);
      X = d3_geo_graticuleX(Y0, Y1, 90);
      Y = d3_geo_graticuleY(X0, X1, precision);
      return graticule;
    };
    return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
  };
  function d3_geo_graticuleX(y0, y1, dy) {
    var y = d3.range(y0, y1 - ε, dy).concat(y1);
    return function(x) {
      return y.map(function(y) {
        return [ x, y ];
      });
    };
  }
  function d3_geo_graticuleY(x0, x1, dx) {
    var x = d3.range(x0, x1 - ε, dx).concat(x1);
    return function(y) {
      return x.map(function(x) {
        return [ x, y ];
      });
    };
  }
  function d3_source(d) {
    return d.source;
  }
  function d3_target(d) {
    return d.target;
  }
  d3.geo.greatArc = function() {
    var source = d3_source, source_, target = d3_target, target_;
    function greatArc() {
      return {
        type: "LineString",
        coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
      };
    }
    greatArc.distance = function() {
      return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
    };
    greatArc.source = function(_) {
      if (!arguments.length) return source;
      source = _, source_ = typeof _ === "function" ? null : _;
      return greatArc;
    };
    greatArc.target = function(_) {
      if (!arguments.length) return target;
      target = _, target_ = typeof _ === "function" ? null : _;
      return greatArc;
    };
    greatArc.precision = function() {
      return arguments.length ? greatArc : 0;
    };
    return greatArc;
  };
  d3.geo.interpolate = function(source, target) {
    return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
  };
  function d3_geo_interpolate(x0, y0, x1, y1) {
    var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
    var interpolate = d ? function(t) {
      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
      return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
    } : function() {
      return [ x0 * d3_degrees, y0 * d3_degrees ];
    };
    interpolate.distance = d;
    return interpolate;
  }
  d3.geo.length = function(object) {
    d3_geo_lengthSum = 0;
    d3.geo.stream(object, d3_geo_length);
    return d3_geo_lengthSum;
  };
  var d3_geo_lengthSum;
  var d3_geo_length = {
    sphere: d3_noop,
    point: d3_noop,
    lineStart: d3_geo_lengthLineStart,
    lineEnd: d3_noop,
    polygonStart: d3_noop,
    polygonEnd: d3_noop
  };
  function d3_geo_lengthLineStart() {
    var λ0, sinφ0, cosφ0;
    d3_geo_length.point = function(λ, φ) {
      λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
      d3_geo_length.point = nextPoint;
    };
    d3_geo_length.lineEnd = function() {
      d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
    };
    function nextPoint(λ, φ) {
      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
      d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
      λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
    }
  }
  function d3_geo_azimuthal(scale, angle) {
    function azimuthal(λ, φ) {
      var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
      return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
    }
    azimuthal.invert = function(x, y) {
      var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
      return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
    };
    return azimuthal;
  }
  var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
    return Math.sqrt(2 / (1 + cosλcosφ));
  }, function(ρ) {
    return 2 * Math.asin(ρ / 2);
  });
  (d3.geo.azimuthalEqualArea = function() {
    return d3_geo_projection(d3_geo_azimuthalEqualArea);
  }).raw = d3_geo_azimuthalEqualArea;
  var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
    var c = Math.acos(cosλcosφ);
    return c && c / Math.sin(c);
  }, d3_identity);
  (d3.geo.azimuthalEquidistant = function() {
    return d3_geo_projection(d3_geo_azimuthalEquidistant);
  }).raw = d3_geo_azimuthalEquidistant;
  function d3_geo_conicConformal(φ0, φ1) {
    var cosφ0 = Math.cos(φ0), t = function(φ) {
      return Math.tan(π / 4 + φ / 2);
    }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
    if (!n) return d3_geo_mercator;
    function forward(λ, φ) {
      if (F > 0) {
        if (φ < -halfπ + ε) φ = -halfπ + ε;
      } else {
        if (φ > halfπ - ε) φ = halfπ - ε;
      }
      var ρ = F / Math.pow(t(φ), n);
      return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
    };
    return forward;
  }
  (d3.geo.conicConformal = function() {
    return d3_geo_conic(d3_geo_conicConformal);
  }).raw = d3_geo_conicConformal;
  function d3_geo_conicEquidistant(φ0, φ1) {
    var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
    if (abs(n) < ε) return d3_geo_equirectangular;
    function forward(λ, φ) {
      var ρ = G - φ;
      return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = G - y;
      return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
    };
    return forward;
  }
  (d3.geo.conicEquidistant = function() {
    return d3_geo_conic(d3_geo_conicEquidistant);
  }).raw = d3_geo_conicEquidistant;
  var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / cosλcosφ;
  }, Math.atan);
  (d3.geo.gnomonic = function() {
    return d3_geo_projection(d3_geo_gnomonic);
  }).raw = d3_geo_gnomonic;
  function d3_geo_mercator(λ, φ) {
    return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
  }
  d3_geo_mercator.invert = function(x, y) {
    return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
  };
  function d3_geo_mercatorProjection(project) {
    var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
    m.scale = function() {
      var v = scale.apply(m, arguments);
      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
    };
    m.translate = function() {
      var v = translate.apply(m, arguments);
      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
    };
    m.clipExtent = function(_) {
      var v = clipExtent.apply(m, arguments);
      if (v === m) {
        if (clipAuto = _ == null) {
          var k = π * scale(), t = translate();
          clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
        }
      } else if (clipAuto) {
        v = null;
      }
      return v;
    };
    return m.clipExtent(null);
  }
  (d3.geo.mercator = function() {
    return d3_geo_mercatorProjection(d3_geo_mercator);
  }).raw = d3_geo_mercator;
  var d3_geo_orthographic = d3_geo_azimuthal(function() {
    return 1;
  }, Math.asin);
  (d3.geo.orthographic = function() {
    return d3_geo_projection(d3_geo_orthographic);
  }).raw = d3_geo_orthographic;
  var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / (1 + cosλcosφ);
  }, function(ρ) {
    return 2 * Math.atan(ρ);
  });
  (d3.geo.stereographic = function() {
    return d3_geo_projection(d3_geo_stereographic);
  }).raw = d3_geo_stereographic;
  function d3_geo_transverseMercator(λ, φ) {
    return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
  }
  d3_geo_transverseMercator.invert = function(x, y) {
    return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
  };
  (d3.geo.transverseMercator = function() {
    var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
    projection.center = function(_) {
      return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
    };
    projection.rotate = function(_) {
      return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(), 
      [ _[0], _[1], _[2] - 90 ]);
    };
    return rotate([ 0, 0, 90 ]);
  }).raw = d3_geo_transverseMercator;
  d3.geom = {};
  function d3_geom_pointX(d) {
    return d[0];
  }
  function d3_geom_pointY(d) {
    return d[1];
  }
  d3.geom.hull = function(vertices) {
    var x = d3_geom_pointX, y = d3_geom_pointY;
    if (arguments.length) return hull(vertices);
    function hull(data) {
      if (data.length < 3) return [];
      var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
      for (i = 0; i < n; i++) {
        points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
      }
      points.sort(d3_geom_hullOrder);
      for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
      var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
      var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
      for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
      for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
      return polygon;
    }
    hull.x = function(_) {
      return arguments.length ? (x = _, hull) : x;
    };
    hull.y = function(_) {
      return arguments.length ? (y = _, hull) : y;
    };
    return hull;
  };
  function d3_geom_hullUpper(points) {
    var n = points.length, hull = [ 0, 1 ], hs = 2;
    for (var i = 2; i < n; i++) {
      while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
      hull[hs++] = i;
    }
    return hull.slice(0, hs);
  }
  function d3_geom_hullOrder(a, b) {
    return a[0] - b[0] || a[1] - b[1];
  }
  d3.geom.polygon = function(coordinates) {
    d3_subclass(coordinates, d3_geom_polygonPrototype);
    return coordinates;
  };
  var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
  d3_geom_polygonPrototype.area = function() {
    var i = -1, n = this.length, a, b = this[n - 1], area = 0;
    while (++i < n) {
      a = b;
      b = this[i];
      area += a[1] * b[0] - a[0] * b[1];
    }
    return area * .5;
  };
  d3_geom_polygonPrototype.centroid = function(k) {
    var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
    if (!arguments.length) k = -1 / (6 * this.area());
    while (++i < n) {
      a = b;
      b = this[i];
      c = a[0] * b[1] - b[0] * a[1];
      x += (a[0] + b[0]) * c;
      y += (a[1] + b[1]) * c;
    }
    return [ x * k, y * k ];
  };
  d3_geom_polygonPrototype.clip = function(subject) {
    var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
    while (++i < n) {
      input = subject.slice();
      subject.length = 0;
      b = this[i];
      c = input[(m = input.length - closed) - 1];
      j = -1;
      while (++j < m) {
        d = input[j];
        if (d3_geom_polygonInside(d, a, b)) {
          if (!d3_geom_polygonInside(c, a, b)) {
            subject.push(d3_geom_polygonIntersect(c, d, a, b));
          }
          subject.push(d);
        } else if (d3_geom_polygonInside(c, a, b)) {
          subject.push(d3_geom_polygonIntersect(c, d, a, b));
        }
        c = d;
      }
      if (closed) subject.push(subject[0]);
      a = b;
    }
    return subject;
  };
  function d3_geom_polygonInside(p, a, b) {
    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
  }
  function d3_geom_polygonIntersect(c, d, a, b) {
    var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
    return [ x1 + ua * x21, y1 + ua * y21 ];
  }
  function d3_geom_polygonClosed(coordinates) {
    var a = coordinates[0], b = coordinates[coordinates.length - 1];
    return !(a[0] - b[0] || a[1] - b[1]);
  }
  var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
  function d3_geom_voronoiBeach() {
    d3_geom_voronoiRedBlackNode(this);
    this.edge = this.site = this.circle = null;
  }
  function d3_geom_voronoiCreateBeach(site) {
    var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
    beach.site = site;
    return beach;
  }
  function d3_geom_voronoiDetachBeach(beach) {
    d3_geom_voronoiDetachCircle(beach);
    d3_geom_voronoiBeaches.remove(beach);
    d3_geom_voronoiBeachPool.push(beach);
    d3_geom_voronoiRedBlackNode(beach);
  }
  function d3_geom_voronoiRemoveBeach(beach) {
    var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
      x: x,
      y: y
    }, previous = beach.P, next = beach.N, disappearing = [ beach ];
    d3_geom_voronoiDetachBeach(beach);
    var lArc = previous;
    while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
      previous = lArc.P;
      disappearing.unshift(lArc);
      d3_geom_voronoiDetachBeach(lArc);
      lArc = previous;
    }
    disappearing.unshift(lArc);
    d3_geom_voronoiDetachCircle(lArc);
    var rArc = next;
    while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
      next = rArc.N;
      disappearing.push(rArc);
      d3_geom_voronoiDetachBeach(rArc);
      rArc = next;
    }
    disappearing.push(rArc);
    d3_geom_voronoiDetachCircle(rArc);
    var nArcs = disappearing.length, iArc;
    for (iArc = 1; iArc < nArcs; ++iArc) {
      rArc = disappearing[iArc];
      lArc = disappearing[iArc - 1];
      d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
    }
    lArc = disappearing[0];
    rArc = disappearing[nArcs - 1];
    rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
    d3_geom_voronoiAttachCircle(lArc);
    d3_geom_voronoiAttachCircle(rArc);
  }
  function d3_geom_voronoiAddBeach(site) {
    var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
    while (node) {
      dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
      if (dxl > ε) node = node.L; else {
        dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
        if (dxr > ε) {
          if (!node.R) {
            lArc = node;
            break;
          }
          node = node.R;
        } else {
          if (dxl > -ε) {
            lArc = node.P;
            rArc = node;
          } else if (dxr > -ε) {
            lArc = node;
            rArc = node.N;
          } else {
            lArc = rArc = node;
          }
          break;
        }
      }
    }
    var newArc = d3_geom_voronoiCreateBeach(site);
    d3_geom_voronoiBeaches.insert(lArc, newArc);
    if (!lArc && !rArc) return;
    if (lArc === rArc) {
      d3_geom_voronoiDetachCircle(lArc);
      rArc = d3_geom_voronoiCreateBeach(lArc.site);
      d3_geom_voronoiBeaches.insert(newArc, rArc);
      newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
      d3_geom_voronoiAttachCircle(lArc);
      d3_geom_voronoiAttachCircle(rArc);
      return;
    }
    if (!rArc) {
      newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
      return;
    }
    d3_geom_voronoiDetachCircle(lArc);
    d3_geom_voronoiDetachCircle(rArc);
    var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
      x: (cy * hb - by * hc) / d + ax,
      y: (bx * hc - cx * hb) / d + ay
    };
    d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
    newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
    rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
    d3_geom_voronoiAttachCircle(lArc);
    d3_geom_voronoiAttachCircle(rArc);
  }
  function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
    var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
    if (!pby2) return rfocx;
    var lArc = arc.P;
    if (!lArc) return -Infinity;
    site = lArc.site;
    var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
    if (!plby2) return lfocx;
    var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
    if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
    return (rfocx + lfocx) / 2;
  }
  function d3_geom_voronoiRightBreakPoint(arc, directrix) {
    var rArc = arc.N;
    if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
    var site = arc.site;
    return site.y === directrix ? site.x : Infinity;
  }
  function d3_geom_voronoiCell(site) {
    this.site = site;
    this.edges = [];
  }
  d3_geom_voronoiCell.prototype.prepare = function() {
    var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
    while (iHalfEdge--) {
      edge = halfEdges[iHalfEdge].edge;
      if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
    }
    halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
    return halfEdges.length;
  };
  function d3_geom_voronoiCloseCells(extent) {
    var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
    while (iCell--) {
      cell = cells[iCell];
      if (!cell || !cell.prepare()) continue;
      halfEdges = cell.edges;
      nHalfEdges = halfEdges.length;
      iHalfEdge = 0;
      while (iHalfEdge < nHalfEdges) {
        end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
        start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
        if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
          halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
            x: x0,
            y: abs(x2 - x0) < ε ? y2 : y1
          } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
            x: abs(y2 - y1) < ε ? x2 : x1,
            y: y1
          } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
            x: x1,
            y: abs(x2 - x1) < ε ? y2 : y0
          } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
            x: abs(y2 - y0) < ε ? x2 : x0,
            y: y0
          } : null), cell.site, null));
          ++nHalfEdges;
        }
      }
    }
  }
  function d3_geom_voronoiHalfEdgeOrder(a, b) {
    return b.angle - a.angle;
  }
  function d3_geom_voronoiCircle() {
    d3_geom_voronoiRedBlackNode(this);
    this.x = this.y = this.arc = this.site = this.cy = null;
  }
  function d3_geom_voronoiAttachCircle(arc) {
    var lArc = arc.P, rArc = arc.N;
    if (!lArc || !rArc) return;
    var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
    if (lSite === rSite) return;
    var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
    var d = 2 * (ax * cy - ay * cx);
    if (d >= -ε2) return;
    var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
    var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
    circle.arc = arc;
    circle.site = cSite;
    circle.x = x + bx;
    circle.y = cy + Math.sqrt(x * x + y * y);
    circle.cy = cy;
    arc.circle = circle;
    var before = null, node = d3_geom_voronoiCircles._;
    while (node) {
      if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
        if (node.L) node = node.L; else {
          before = node.P;
          break;
        }
      } else {
        if (node.R) node = node.R; else {
          before = node;
          break;
        }
      }
    }
    d3_geom_voronoiCircles.insert(before, circle);
    if (!before) d3_geom_voronoiFirstCircle = circle;
  }
  function d3_geom_voronoiDetachCircle(arc) {
    var circle = arc.circle;
    if (circle) {
      if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
      d3_geom_voronoiCircles.remove(circle);
      d3_geom_voronoiCirclePool.push(circle);
      d3_geom_voronoiRedBlackNode(circle);
      arc.circle = null;
    }
  }
  function d3_geom_voronoiClipEdges(extent) {
    var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
    while (i--) {
      e = edges[i];
      if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
        e.a = e.b = null;
        edges.splice(i, 1);
      }
    }
  }
  function d3_geom_voronoiConnectEdge(edge, extent) {
    var vb = edge.b;
    if (vb) return true;
    var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
    if (ry === ly) {
      if (fx < x0 || fx >= x1) return;
      if (lx > rx) {
        if (!va) va = {
          x: fx,
          y: y0
        }; else if (va.y >= y1) return;
        vb = {
          x: fx,
          y: y1
        };
      } else {
        if (!va) va = {
          x: fx,
          y: y1
        }; else if (va.y < y0) return;
        vb = {
          x: fx,
          y: y0
        };
      }
    } else {
      fm = (lx - rx) / (ry - ly);
      fb = fy - fm * fx;
      if (fm < -1 || fm > 1) {
        if (lx > rx) {
          if (!va) va = {
            x: (y0 - fb) / fm,
            y: y0
          }; else if (va.y >= y1) return;
          vb = {
            x: (y1 - fb) / fm,
            y: y1
          };
        } else {
          if (!va) va = {
            x: (y1 - fb) / fm,
            y: y1
          }; else if (va.y < y0) return;
          vb = {
            x: (y0 - fb) / fm,
            y: y0
          };
        }
      } else {
        if (ly < ry) {
          if (!va) va = {
            x: x0,
            y: fm * x0 + fb
          }; else if (va.x >= x1) return;
          vb = {
            x: x1,
            y: fm * x1 + fb
          };
        } else {
          if (!va) va = {
            x: x1,
            y: fm * x1 + fb
          }; else if (va.x < x0) return;
          vb = {
            x: x0,
            y: fm * x0 + fb
          };
        }
      }
    }
    edge.a = va;
    edge.b = vb;
    return true;
  }
  function d3_geom_voronoiEdge(lSite, rSite) {
    this.l = lSite;
    this.r = rSite;
    this.a = this.b = null;
  }
  function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
    var edge = new d3_geom_voronoiEdge(lSite, rSite);
    d3_geom_voronoiEdges.push(edge);
    if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
    if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
    d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
    d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
    return edge;
  }
  function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
    var edge = new d3_geom_voronoiEdge(lSite, null);
    edge.a = va;
    edge.b = vb;
    d3_geom_voronoiEdges.push(edge);
    return edge;
  }
  function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
    if (!edge.a && !edge.b) {
      edge.a = vertex;
      edge.l = lSite;
      edge.r = rSite;
    } else if (edge.l === rSite) {
      edge.b = vertex;
    } else {
      edge.a = vertex;
    }
  }
  function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
    var va = edge.a, vb = edge.b;
    this.edge = edge;
    this.site = lSite;
    this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
  }
  d3_geom_voronoiHalfEdge.prototype = {
    start: function() {
      return this.edge.l === this.site ? this.edge.a : this.edge.b;
    },
    end: function() {
      return this.edge.l === this.site ? this.edge.b : this.edge.a;
    }
  };
  function d3_geom_voronoiRedBlackTree() {
    this._ = null;
  }
  function d3_geom_voronoiRedBlackNode(node) {
    node.U = node.C = node.L = node.R = node.P = node.N = null;
  }
  d3_geom_voronoiRedBlackTree.prototype = {
    insert: function(after, node) {
      var parent, grandpa, uncle;
      if (after) {
        node.P = after;
        node.N = after.N;
        if (after.N) after.N.P = node;
        after.N = node;
        if (after.R) {
          after = after.R;
          while (after.L) after = after.L;
          after.L = node;
        } else {
          after.R = node;
        }
        parent = after;
      } else if (this._) {
        after = d3_geom_voronoiRedBlackFirst(this._);
        node.P = null;
        node.N = after;
        after.P = after.L = node;
        parent = after;
      } else {
        node.P = node.N = null;
        this._ = node;
        parent = null;
      }
      node.L = node.R = null;
      node.U = parent;
      node.C = true;
      after = node;
      while (parent && parent.C) {
        grandpa = parent.U;
        if (parent === grandpa.L) {
          uncle = grandpa.R;
          if (uncle && uncle.C) {
            parent.C = uncle.C = false;
            grandpa.C = true;
            after = grandpa;
          } else {
            if (after === parent.R) {
              d3_geom_voronoiRedBlackRotateLeft(this, parent);
              after = parent;
              parent = after.U;
            }
            parent.C = false;
            grandpa.C = true;
            d3_geom_voronoiRedBlackRotateRight(this, grandpa);
          }
        } else {
          uncle = grandpa.L;
          if (uncle && uncle.C) {
            parent.C = uncle.C = false;
            grandpa.C = true;
            after = grandpa;
          } else {
            if (after === parent.L) {
              d3_geom_voronoiRedBlackRotateRight(this, parent);
              after = parent;
              parent = after.U;
            }
            parent.C = false;
            grandpa.C = true;
            d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
          }
        }
        parent = after.U;
      }
      this._.C = false;
    },
    remove: function(node) {
      if (node.N) node.N.P = node.P;
      if (node.P) node.P.N = node.N;
      node.N = node.P = null;
      var parent = node.U, sibling, left = node.L, right = node.R, next, red;
      if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
      if (parent) {
        if (parent.L === node) parent.L = next; else parent.R = next;
      } else {
        this._ = next;
      }
      if (left && right) {
        red = next.C;
        next.C = node.C;
        next.L = left;
        left.U = next;
        if (next !== right) {
          parent = next.U;
          next.U = node.U;
          node = next.R;
          parent.L = node;
          next.R = right;
          right.U = next;
        } else {
          next.U = parent;
          parent = next;
          node = next.R;
        }
      } else {
        red = node.C;
        node = next;
      }
      if (node) node.U = parent;
      if (red) return;
      if (node && node.C) {
        node.C = false;
        return;
      }
      do {
        if (node === this._) break;
        if (node === parent.L) {
          sibling = parent.R;
          if (sibling.C) {
            sibling.C = false;
            parent.C = true;
            d3_geom_voronoiRedBlackRotateLeft(this, parent);
            sibling = parent.R;
          }
          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
            if (!sibling.R || !sibling.R.C) {
              sibling.L.C = false;
              sibling.C = true;
              d3_geom_voronoiRedBlackRotateRight(this, sibling);
              sibling = parent.R;
            }
            sibling.C = parent.C;
            parent.C = sibling.R.C = false;
            d3_geom_voronoiRedBlackRotateLeft(this, parent);
            node = this._;
            break;
          }
        } else {
          sibling = parent.L;
          if (sibling.C) {
            sibling.C = false;
            parent.C = true;
            d3_geom_voronoiRedBlackRotateRight(this, parent);
            sibling = parent.L;
          }
          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
            if (!sibling.L || !sibling.L.C) {
              sibling.R.C = false;
              sibling.C = true;
              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
              sibling = parent.L;
            }
            sibling.C = parent.C;
            parent.C = sibling.L.C = false;
            d3_geom_voronoiRedBlackRotateRight(this, parent);
            node = this._;
            break;
          }
        }
        sibling.C = true;
        node = parent;
        parent = parent.U;
      } while (!node.C);
      if (node) node.C = false;
    }
  };
  function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
    var p = node, q = node.R, parent = p.U;
    if (parent) {
      if (parent.L === p) parent.L = q; else parent.R = q;
    } else {
      tree._ = q;
    }
    q.U = parent;
    p.U = q;
    p.R = q.L;
    if (p.R) p.R.U = p;
    q.L = p;
  }
  function d3_geom_voronoiRedBlackRotateRight(tree, node) {
    var p = node, q = node.L, parent = p.U;
    if (parent) {
      if (parent.L === p) parent.L = q; else parent.R = q;
    } else {
      tree._ = q;
    }
    q.U = parent;
    p.U = q;
    p.L = q.R;
    if (p.L) p.L.U = p;
    q.R = p;
  }
  function d3_geom_voronoiRedBlackFirst(node) {
    while (node.L) node = node.L;
    return node;
  }
  function d3_geom_voronoi(sites, bbox) {
    var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
    d3_geom_voronoiEdges = [];
    d3_geom_voronoiCells = new Array(sites.length);
    d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
    d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
    while (true) {
      circle = d3_geom_voronoiFirstCircle;
      if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
        if (site.x !== x0 || site.y !== y0) {
          d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
          d3_geom_voronoiAddBeach(site);
          x0 = site.x, y0 = site.y;
        }
        site = sites.pop();
      } else if (circle) {
        d3_geom_voronoiRemoveBeach(circle.arc);
      } else {
        break;
      }
    }
    if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
    var diagram = {
      cells: d3_geom_voronoiCells,
      edges: d3_geom_voronoiEdges
    };
    d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
    return diagram;
  }
  function d3_geom_voronoiVertexOrder(a, b) {
    return b.y - a.y || b.x - a.x;
  }
  d3.geom.voronoi = function(points) {
    var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
    if (points) return voronoi(points);
    function voronoi(data) {
      var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
      d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
        var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
          var s = e.start();
          return [ s.x, s.y ];
        }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
        polygon.point = data[i];
      });
      return polygons;
    }
    function sites(data) {
      return data.map(function(d, i) {
        return {
          x: Math.round(fx(d, i) / ε) * ε,
          y: Math.round(fy(d, i) / ε) * ε,
          i: i
        };
      });
    }
    voronoi.links = function(data) {
      return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
        return edge.l && edge.r;
      }).map(function(edge) {
        return {
          source: data[edge.l.i],
          target: data[edge.r.i]
        };
      });
    };
    voronoi.triangles = function(data) {
      var triangles = [];
      d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
        var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
        while (++j < m) {
          e0 = e1;
          s0 = s1;
          e1 = edges[j].edge;
          s1 = e1.l === site ? e1.r : e1.l;
          if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
            triangles.push([ data[i], data[s0.i], data[s1.i] ]);
          }
        }
      });
      return triangles;
    };
    voronoi.x = function(_) {
      return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
    };
    voronoi.y = function(_) {
      return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
    };
    voronoi.clipExtent = function(_) {
      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
      clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
      return voronoi;
    };
    voronoi.size = function(_) {
      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
      return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
    };
    return voronoi;
  };
  var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
  function d3_geom_voronoiTriangleArea(a, b, c) {
    return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
  }
  d3.geom.delaunay = function(vertices) {
    return d3.geom.voronoi().triangles(vertices);
  };
  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
    var x = d3_geom_pointX, y = d3_geom_pointY, compat;
    if (compat = arguments.length) {
      x = d3_geom_quadtreeCompatX;
      y = d3_geom_quadtreeCompatY;
      if (compat === 3) {
        y2 = y1;
        x2 = x1;
        y1 = x1 = 0;
      }
      return quadtree(points);
    }
    function quadtree(data) {
      var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
      if (x1 != null) {
        x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
      } else {
        x2_ = y2_ = -(x1_ = y1_ = Infinity);
        xs = [], ys = [];
        n = data.length;
        if (compat) for (i = 0; i < n; ++i) {
          d = data[i];
          if (d.x < x1_) x1_ = d.x;
          if (d.y < y1_) y1_ = d.y;
          if (d.x > x2_) x2_ = d.x;
          if (d.y > y2_) y2_ = d.y;
          xs.push(d.x);
          ys.push(d.y);
        } else for (i = 0; i < n; ++i) {
          var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
          if (x_ < x1_) x1_ = x_;
          if (y_ < y1_) y1_ = y_;
          if (x_ > x2_) x2_ = x_;
          if (y_ > y2_) y2_ = y_;
          xs.push(x_);
          ys.push(y_);
        }
      }
      var dx = x2_ - x1_, dy = y2_ - y1_;
      if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
      function insert(n, d, x, y, x1, y1, x2, y2) {
        if (isNaN(x) || isNaN(y)) return;
        if (n.leaf) {
          var nx = n.x, ny = n.y;
          if (nx != null) {
            if (abs(nx - x) + abs(ny - y) < .01) {
              insertChild(n, d, x, y, x1, y1, x2, y2);
            } else {
              var nPoint = n.point;
              n.x = n.y = n.point = null;
              insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
              insertChild(n, d, x, y, x1, y1, x2, y2);
            }
          } else {
            n.x = x, n.y = y, n.point = d;
          }
        } else {
          insertChild(n, d, x, y, x1, y1, x2, y2);
        }
      }
      function insertChild(n, d, x, y, x1, y1, x2, y2) {
        var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
        n.leaf = false;
        n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
        if (right) x1 = xm; else x2 = xm;
        if (below) y1 = ym; else y2 = ym;
        insert(n, d, x, y, x1, y1, x2, y2);
      }
      var root = d3_geom_quadtreeNode();
      root.add = function(d) {
        insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
      };
      root.visit = function(f) {
        d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
      };
      root.find = function(point) {
        return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
      };
      i = -1;
      if (x1 == null) {
        while (++i < n) {
          insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
        }
        --i;
      } else data.forEach(root.add);
      xs = ys = data = d = null;
      return root;
    }
    quadtree.x = function(_) {
      return arguments.length ? (x = _, quadtree) : x;
    };
    quadtree.y = function(_) {
      return arguments.length ? (y = _, quadtree) : y;
    };
    quadtree.extent = function(_) {
      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], 
      y2 = +_[1][1];
      return quadtree;
    };
    quadtree.size = function(_) {
      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
      return quadtree;
    };
    return quadtree;
  };
  function d3_geom_quadtreeCompatX(d) {
    return d.x;
  }
  function d3_geom_quadtreeCompatY(d) {
    return d.y;
  }
  function d3_geom_quadtreeNode() {
    return {
      leaf: true,
      nodes: [],
      point: null,
      x: null,
      y: null
    };
  }
  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
    if (!f(node, x1, y1, x2, y2)) {
      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
    }
  }
  function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
    var minDistance2 = Infinity, closestPoint;
    (function find(node, x1, y1, x2, y2) {
      if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
      if (point = node.point) {
        var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
        if (distance2 < minDistance2) {
          var distance = Math.sqrt(minDistance2 = distance2);
          x0 = x - distance, y0 = y - distance;
          x3 = x + distance, y3 = y + distance;
          closestPoint = point;
        }
      }
      var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
      for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
        if (node = children[i & 3]) switch (i & 3) {
         case 0:
          find(node, x1, y1, xm, ym);
          break;

         case 1:
          find(node, xm, y1, x2, ym);
          break;

         case 2:
          find(node, x1, ym, xm, y2);
          break;

         case 3:
          find(node, xm, ym, x2, y2);
          break;
        }
      }
    })(root, x0, y0, x3, y3);
    return closestPoint;
  }
  d3.interpolateRgb = d3_interpolateRgb;
  function d3_interpolateRgb(a, b) {
    a = d3.rgb(a);
    b = d3.rgb(b);
    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
    return function(t) {
      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
    };
  }
  d3.interpolateObject = d3_interpolateObject;
  function d3_interpolateObject(a, b) {
    var i = {}, c = {}, k;
    for (k in a) {
      if (k in b) {
        i[k] = d3_interpolate(a[k], b[k]);
      } else {
        c[k] = a[k];
      }
    }
    for (k in b) {
      if (!(k in a)) {
        c[k] = b[k];
      }
    }
    return function(t) {
      for (k in i) c[k] = i[k](t);
      return c;
    };
  }
  d3.interpolateNumber = d3_interpolateNumber;
  function d3_interpolateNumber(a, b) {
    a = +a, b = +b;
    return function(t) {
      return a * (1 - t) + b * t;
    };
  }
  d3.interpolateString = d3_interpolateString;
  function d3_interpolateString(a, b) {
    var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
    a = a + "", b = b + "";
    while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
      if ((bs = bm.index) > bi) {
        bs = b.slice(bi, bs);
        if (s[i]) s[i] += bs; else s[++i] = bs;
      }
      if ((am = am[0]) === (bm = bm[0])) {
        if (s[i]) s[i] += bm; else s[++i] = bm;
      } else {
        s[++i] = null;
        q.push({
          i: i,
          x: d3_interpolateNumber(am, bm)
        });
      }
      bi = d3_interpolate_numberB.lastIndex;
    }
    if (bi < b.length) {
      bs = b.slice(bi);
      if (s[i]) s[i] += bs; else s[++i] = bs;
    }
    return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
      return b(t) + "";
    }) : function() {
      return b;
    } : (b = q.length, function(t) {
      for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    });
  }
  var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
  d3.interpolate = d3_interpolate;
  function d3_interpolate(a, b) {
    var i = d3.interpolators.length, f;
    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
    return f;
  }
  d3.interpolators = [ function(a, b) {
    var t = typeof b;
    return (t === "string" ? d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
  } ];
  d3.interpolateArray = d3_interpolateArray;
  function d3_interpolateArray(a, b) {
    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
    for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
    for (;i < na; ++i) c[i] = a[i];
    for (;i < nb; ++i) c[i] = b[i];
    return function(t) {
      for (i = 0; i < n0; ++i) c[i] = x[i](t);
      return c;
    };
  }
  var d3_ease_default = function() {
    return d3_identity;
  };
  var d3_ease = d3.map({
    linear: d3_ease_default,
    poly: d3_ease_poly,
    quad: function() {
      return d3_ease_quad;
    },
    cubic: function() {
      return d3_ease_cubic;
    },
    sin: function() {
      return d3_ease_sin;
    },
    exp: function() {
      return d3_ease_exp;
    },
    circle: function() {
      return d3_ease_circle;
    },
    elastic: d3_ease_elastic,
    back: d3_ease_back,
    bounce: function() {
      return d3_ease_bounce;
    }
  });
  var d3_ease_mode = d3.map({
    "in": d3_identity,
    out: d3_ease_reverse,
    "in-out": d3_ease_reflect,
    "out-in": function(f) {
      return d3_ease_reflect(d3_ease_reverse(f));
    }
  });
  d3.ease = function(name) {
    var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
    t = d3_ease.get(t) || d3_ease_default;
    m = d3_ease_mode.get(m) || d3_identity;
    return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
  };
  function d3_ease_clamp(f) {
    return function(t) {
      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
    };
  }
  function d3_ease_reverse(f) {
    return function(t) {
      return 1 - f(1 - t);
    };
  }
  function d3_ease_reflect(f) {
    return function(t) {
      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
    };
  }
  function d3_ease_quad(t) {
    return t * t;
  }
  function d3_ease_cubic(t) {
    return t * t * t;
  }
  function d3_ease_cubicInOut(t) {
    if (t <= 0) return 0;
    if (t >= 1) return 1;
    var t2 = t * t, t3 = t2 * t;
    return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
  }
  function d3_ease_poly(e) {
    return function(t) {
      return Math.pow(t, e);
    };
  }
  function d3_ease_sin(t) {
    return 1 - Math.cos(t * halfπ);
  }
  function d3_ease_exp(t) {
    return Math.pow(2, 10 * (t - 1));
  }
  function d3_ease_circle(t) {
    return 1 - Math.sqrt(1 - t * t);
  }
  function d3_ease_elastic(a, p) {
    var s;
    if (arguments.length < 2) p = .45;
    if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
    return function(t) {
      return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
    };
  }
  function d3_ease_back(s) {
    if (!s) s = 1.70158;
    return function(t) {
      return t * t * ((s + 1) * t - s);
    };
  }
  function d3_ease_bounce(t) {
    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
  }
  d3.interpolateHcl = d3_interpolateHcl;
  function d3_interpolateHcl(a, b) {
    a = d3.hcl(a);
    b = d3.hcl(b);
    var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
    if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
    };
  }
  d3.interpolateHsl = d3_interpolateHsl;
  function d3_interpolateHsl(a, b) {
    a = d3.hsl(a);
    b = d3.hsl(b);
    var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
    if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
    };
  }
  d3.interpolateLab = d3_interpolateLab;
  function d3_interpolateLab(a, b) {
    a = d3.lab(a);
    b = d3.lab(b);
    var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
    return function(t) {
      return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
    };
  }
  d3.interpolateRound = d3_interpolateRound;
  function d3_interpolateRound(a, b) {
    b -= a;
    return function(t) {
      return Math.round(a + b * t);
    };
  }
  d3.transform = function(string) {
    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
    return (d3.transform = function(string) {
      if (string != null) {
        g.setAttribute("transform", string);
        var t = g.transform.baseVal.consolidate();
      }
      return new d3_transform(t ? t.matrix : d3_transformIdentity);
    })(string);
  };
  function d3_transform(m) {
    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
    if (r0[0] * r1[1] < r1[0] * r0[1]) {
      r0[0] *= -1;
      r0[1] *= -1;
      kx *= -1;
      kz *= -1;
    }
    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
    this.translate = [ m.e, m.f ];
    this.scale = [ kx, ky ];
    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
  }
  d3_transform.prototype.toString = function() {
    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
  };
  function d3_transformDot(a, b) {
    return a[0] * b[0] + a[1] * b[1];
  }
  function d3_transformNormalize(a) {
    var k = Math.sqrt(d3_transformDot(a, a));
    if (k) {
      a[0] /= k;
      a[1] /= k;
    }
    return k;
  }
  function d3_transformCombine(a, b, k) {
    a[0] += k * b[0];
    a[1] += k * b[1];
    return a;
  }
  var d3_transformIdentity = {
    a: 1,
    b: 0,
    c: 0,
    d: 1,
    e: 0,
    f: 0
  };
  d3.interpolateTransform = d3_interpolateTransform;
  function d3_interpolateTransform(a, b) {
    var s = [], q = [], n, A = d3.transform(a), B = d3.transform(b), ta = A.translate, tb = B.translate, ra = A.rotate, rb = B.rotate, wa = A.skew, wb = B.skew, ka = A.scale, kb = B.scale;
    if (ta[0] != tb[0] || ta[1] != tb[1]) {
      s.push("translate(", null, ",", null, ")");
      q.push({
        i: 1,
        x: d3_interpolateNumber(ta[0], tb[0])
      }, {
        i: 3,
        x: d3_interpolateNumber(ta[1], tb[1])
      });
    } else if (tb[0] || tb[1]) {
      s.push("translate(" + tb + ")");
    } else {
      s.push("");
    }
    if (ra != rb) {
      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
      q.push({
        i: s.push(s.pop() + "rotate(", null, ")") - 2,
        x: d3_interpolateNumber(ra, rb)
      });
    } else if (rb) {
      s.push(s.pop() + "rotate(" + rb + ")");
    }
    if (wa != wb) {
      q.push({
        i: s.push(s.pop() + "skewX(", null, ")") - 2,
        x: d3_interpolateNumber(wa, wb)
      });
    } else if (wb) {
      s.push(s.pop() + "skewX(" + wb + ")");
    }
    if (ka[0] != kb[0] || ka[1] != kb[1]) {
      n = s.push(s.pop() + "scale(", null, ",", null, ")");
      q.push({
        i: n - 4,
        x: d3_interpolateNumber(ka[0], kb[0])
      }, {
        i: n - 2,
        x: d3_interpolateNumber(ka[1], kb[1])
      });
    } else if (kb[0] != 1 || kb[1] != 1) {
      s.push(s.pop() + "scale(" + kb + ")");
    }
    n = q.length;
    return function(t) {
      var i = -1, o;
      while (++i < n) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    };
  }
  function d3_uninterpolateNumber(a, b) {
    b = (b -= a = +a) || 1 / b;
    return function(x) {
      return (x - a) / b;
    };
  }
  function d3_uninterpolateClamp(a, b) {
    b = (b -= a = +a) || 1 / b;
    return function(x) {
      return Math.max(0, Math.min(1, (x - a) / b));
    };
  }
  d3.layout = {};
  d3.layout.bundle = function() {
    return function(links) {
      var paths = [], i = -1, n = links.length;
      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
      return paths;
    };
  };
  function d3_layout_bundlePath(link) {
    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
    while (start !== lca) {
      start = start.parent;
      points.push(start);
    }
    var k = points.length;
    while (end !== lca) {
      points.splice(k, 0, end);
      end = end.parent;
    }
    return points;
  }
  function d3_layout_bundleAncestors(node) {
    var ancestors = [], parent = node.parent;
    while (parent != null) {
      ancestors.push(node);
      node = parent;
      parent = parent.parent;
    }
    ancestors.push(node);
    return ancestors;
  }
  function d3_layout_bundleLeastCommonAncestor(a, b) {
    if (a === b) return a;
    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
    while (aNode === bNode) {
      sharedNode = aNode;
      aNode = aNodes.pop();
      bNode = bNodes.pop();
    }
    return sharedNode;
  }
  d3.layout.chord = function() {
    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
    function relayout() {
      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
      chords = [];
      groups = [];
      k = 0, i = -1;
      while (++i < n) {
        x = 0, j = -1;
        while (++j < n) {
          x += matrix[i][j];
        }
        groupSums.push(x);
        subgroupIndex.push(d3.range(n));
        k += x;
      }
      if (sortGroups) {
        groupIndex.sort(function(a, b) {
          return sortGroups(groupSums[a], groupSums[b]);
        });
      }
      if (sortSubgroups) {
        subgroupIndex.forEach(function(d, i) {
          d.sort(function(a, b) {
            return sortSubgroups(matrix[i][a], matrix[i][b]);
          });
        });
      }
      k = (τ - padding * n) / k;
      x = 0, i = -1;
      while (++i < n) {
        x0 = x, j = -1;
        while (++j < n) {
          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
          subgroups[di + "-" + dj] = {
            index: di,
            subindex: dj,
            startAngle: a0,
            endAngle: a1,
            value: v
          };
        }
        groups[di] = {
          index: di,
          startAngle: x0,
          endAngle: x,
          value: (x - x0) / k
        };
        x += padding;
      }
      i = -1;
      while (++i < n) {
        j = i - 1;
        while (++j < n) {
          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
          if (source.value || target.value) {
            chords.push(source.value < target.value ? {
              source: target,
              target: source
            } : {
              source: source,
              target: target
            });
          }
        }
      }
      if (sortChords) resort();
    }
    function resort() {
      chords.sort(function(a, b) {
        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
      });
    }
    chord.matrix = function(x) {
      if (!arguments.length) return matrix;
      n = (matrix = x) && matrix.length;
      chords = groups = null;
      return chord;
    };
    chord.padding = function(x) {
      if (!arguments.length) return padding;
      padding = x;
      chords = groups = null;
      return chord;
    };
    chord.sortGroups = function(x) {
      if (!arguments.length) return sortGroups;
      sortGroups = x;
      chords = groups = null;
      return chord;
    };
    chord.sortSubgroups = function(x) {
      if (!arguments.length) return sortSubgroups;
      sortSubgroups = x;
      chords = null;
      return chord;
    };
    chord.sortChords = function(x) {
      if (!arguments.length) return sortChords;
      sortChords = x;
      if (chords) resort();
      return chord;
    };
    chord.chords = function() {
      if (!chords) relayout();
      return chords;
    };
    chord.groups = function() {
      if (!groups) relayout();
      return groups;
    };
    return chord;
  };
  d3.layout.force = function() {
    var force = {}, event = d3.dispatch("start", "tick", "end"), size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
    function repulse(node) {
      return function(quad, x1, _, x2) {
        if (quad.point !== node) {
          var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
          if (dw * dw / theta2 < dn) {
            if (dn < chargeDistance2) {
              var k = quad.charge / dn;
              node.px -= dx * k;
              node.py -= dy * k;
            }
            return true;
          }
          if (quad.point && dn && dn < chargeDistance2) {
            var k = quad.pointCharge / dn;
            node.px -= dx * k;
            node.py -= dy * k;
          }
        }
        return !quad.charge;
      };
    }
    force.tick = function() {
      if ((alpha *= .99) < .005) {
        event.end({
          type: "end",
          alpha: alpha = 0
        });
        return true;
      }
      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
      for (i = 0; i < m; ++i) {
        o = links[i];
        s = o.source;
        t = o.target;
        x = t.x - s.x;
        y = t.y - s.y;
        if (l = x * x + y * y) {
          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
          x *= l;
          y *= l;
          t.x -= x * (k = s.weight / (t.weight + s.weight));
          t.y -= y * k;
          s.x += x * (k = 1 - k);
          s.y += y * k;
        }
      }
      if (k = alpha * gravity) {
        x = size[0] / 2;
        y = size[1] / 2;
        i = -1;
        if (k) while (++i < n) {
          o = nodes[i];
          o.x += (x - o.x) * k;
          o.y += (y - o.y) * k;
        }
      }
      if (charge) {
        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
        i = -1;
        while (++i < n) {
          if (!(o = nodes[i]).fixed) {
            q.visit(repulse(o));
          }
        }
      }
      i = -1;
      while (++i < n) {
        o = nodes[i];
        if (o.fixed) {
          o.x = o.px;
          o.y = o.py;
        } else {
          o.x -= (o.px - (o.px = o.x)) * friction;
          o.y -= (o.py - (o.py = o.y)) * friction;
        }
      }
      event.tick({
        type: "tick",
        alpha: alpha
      });
    };
    force.nodes = function(x) {
      if (!arguments.length) return nodes;
      nodes = x;
      return force;
    };
    force.links = function(x) {
      if (!arguments.length) return links;
      links = x;
      return force;
    };
    force.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return force;
    };
    force.linkDistance = function(x) {
      if (!arguments.length) return linkDistance;
      linkDistance = typeof x === "function" ? x : +x;
      return force;
    };
    force.distance = force.linkDistance;
    force.linkStrength = function(x) {
      if (!arguments.length) return linkStrength;
      linkStrength = typeof x === "function" ? x : +x;
      return force;
    };
    force.friction = function(x) {
      if (!arguments.length) return friction;
      friction = +x;
      return force;
    };
    force.charge = function(x) {
      if (!arguments.length) return charge;
      charge = typeof x === "function" ? x : +x;
      return force;
    };
    force.chargeDistance = function(x) {
      if (!arguments.length) return Math.sqrt(chargeDistance2);
      chargeDistance2 = x * x;
      return force;
    };
    force.gravity = function(x) {
      if (!arguments.length) return gravity;
      gravity = +x;
      return force;
    };
    force.theta = function(x) {
      if (!arguments.length) return Math.sqrt(theta2);
      theta2 = x * x;
      return force;
    };
    force.alpha = function(x) {
      if (!arguments.length) return alpha;
      x = +x;
      if (alpha) {
        if (x > 0) alpha = x; else alpha = 0;
      } else if (x > 0) {
        event.start({
          type: "start",
          alpha: alpha = x
        });
        d3.timer(force.tick);
      }
      return force;
    };
    force.start = function() {
      var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
      for (i = 0; i < n; ++i) {
        (o = nodes[i]).index = i;
        o.weight = 0;
      }
      for (i = 0; i < m; ++i) {
        o = links[i];
        if (typeof o.source == "number") o.source = nodes[o.source];
        if (typeof o.target == "number") o.target = nodes[o.target];
        ++o.source.weight;
        ++o.target.weight;
      }
      for (i = 0; i < n; ++i) {
        o = nodes[i];
        if (isNaN(o.x)) o.x = position("x", w);
        if (isNaN(o.y)) o.y = position("y", h);
        if (isNaN(o.px)) o.px = o.x;
        if (isNaN(o.py)) o.py = o.y;
      }
      distances = [];
      if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
      strengths = [];
      if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
      charges = [];
      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
      function position(dimension, size) {
        if (!neighbors) {
          neighbors = new Array(n);
          for (j = 0; j < n; ++j) {
            neighbors[j] = [];
          }
          for (j = 0; j < m; ++j) {
            var o = links[j];
            neighbors[o.source.index].push(o.target);
            neighbors[o.target.index].push(o.source);
          }
        }
        var candidates = neighbors[i], j = -1, l = candidates.length, x;
        while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
        return Math.random() * size;
      }
      return force.resume();
    };
    force.resume = function() {
      return force.alpha(.1);
    };
    force.stop = function() {
      return force.alpha(0);
    };
    force.drag = function() {
      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
      if (!arguments.length) return drag;
      this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
    };
    function dragmove(d) {
      d.px = d3.event.x, d.py = d3.event.y;
      force.resume();
    }
    return d3.rebind(force, event, "on");
  };
  function d3_layout_forceDragstart(d) {
    d.fixed |= 2;
  }
  function d3_layout_forceDragend(d) {
    d.fixed &= ~6;
  }
  function d3_layout_forceMouseover(d) {
    d.fixed |= 4;
    d.px = d.x, d.py = d.y;
  }
  function d3_layout_forceMouseout(d) {
    d.fixed &= ~4;
  }
  function d3_layout_forceAccumulate(quad, alpha, charges) {
    var cx = 0, cy = 0;
    quad.charge = 0;
    if (!quad.leaf) {
      var nodes = quad.nodes, n = nodes.length, i = -1, c;
      while (++i < n) {
        c = nodes[i];
        if (c == null) continue;
        d3_layout_forceAccumulate(c, alpha, charges);
        quad.charge += c.charge;
        cx += c.charge * c.cx;
        cy += c.charge * c.cy;
      }
    }
    if (quad.point) {
      if (!quad.leaf) {
        quad.point.x += Math.random() - .5;
        quad.point.y += Math.random() - .5;
      }
      var k = alpha * charges[quad.point.index];
      quad.charge += quad.pointCharge = k;
      cx += k * quad.point.x;
      cy += k * quad.point.y;
    }
    quad.cx = cx / quad.charge;
    quad.cy = cy / quad.charge;
  }
  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
  d3.layout.hierarchy = function() {
    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
    function hierarchy(root) {
      var stack = [ root ], nodes = [], node;
      root.depth = 0;
      while ((node = stack.pop()) != null) {
        nodes.push(node);
        if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
          var n, childs, child;
          while (--n >= 0) {
            stack.push(child = childs[n]);
            child.parent = node;
            child.depth = node.depth + 1;
          }
          if (value) node.value = 0;
          node.children = childs;
        } else {
          if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
          delete node.children;
        }
      }
      d3_layout_hierarchyVisitAfter(root, function(node) {
        var childs, parent;
        if (sort && (childs = node.children)) childs.sort(sort);
        if (value && (parent = node.parent)) parent.value += node.value;
      });
      return nodes;
    }
    hierarchy.sort = function(x) {
      if (!arguments.length) return sort;
      sort = x;
      return hierarchy;
    };
    hierarchy.children = function(x) {
      if (!arguments.length) return children;
      children = x;
      return hierarchy;
    };
    hierarchy.value = function(x) {
      if (!arguments.length) return value;
      value = x;
      return hierarchy;
    };
    hierarchy.revalue = function(root) {
      if (value) {
        d3_layout_hierarchyVisitBefore(root, function(node) {
          if (node.children) node.value = 0;
        });
        d3_layout_hierarchyVisitAfter(root, function(node) {
          var parent;
          if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
          if (parent = node.parent) parent.value += node.value;
        });
      }
      return root;
    };
    return hierarchy;
  };
  function d3_layout_hierarchyRebind(object, hierarchy) {
    d3.rebind(object, hierarchy, "sort", "children", "value");
    object.nodes = object;
    object.links = d3_layout_hierarchyLinks;
    return object;
  }
  function d3_layout_hierarchyVisitBefore(node, callback) {
    var nodes = [ node ];
    while ((node = nodes.pop()) != null) {
      callback(node);
      if ((children = node.children) && (n = children.length)) {
        var n, children;
        while (--n >= 0) nodes.push(children[n]);
      }
    }
  }
  function d3_layout_hierarchyVisitAfter(node, callback) {
    var nodes = [ node ], nodes2 = [];
    while ((node = nodes.pop()) != null) {
      nodes2.push(node);
      if ((children = node.children) && (n = children.length)) {
        var i = -1, n, children;
        while (++i < n) nodes.push(children[i]);
      }
    }
    while ((node = nodes2.pop()) != null) {
      callback(node);
    }
  }
  function d3_layout_hierarchyChildren(d) {
    return d.children;
  }
  function d3_layout_hierarchyValue(d) {
    return d.value;
  }
  function d3_layout_hierarchySort(a, b) {
    return b.value - a.value;
  }
  function d3_layout_hierarchyLinks(nodes) {
    return d3.merge(nodes.map(function(parent) {
      return (parent.children || []).map(function(child) {
        return {
          source: parent,
          target: child
        };
      });
    }));
  }
  d3.layout.partition = function() {
    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
    function position(node, x, dx, dy) {
      var children = node.children;
      node.x = x;
      node.y = node.depth * dy;
      node.dx = dx;
      node.dy = dy;
      if (children && (n = children.length)) {
        var i = -1, n, c, d;
        dx = node.value ? dx / node.value : 0;
        while (++i < n) {
          position(c = children[i], x, d = c.value * dx, dy);
          x += d;
        }
      }
    }
    function depth(node) {
      var children = node.children, d = 0;
      if (children && (n = children.length)) {
        var i = -1, n;
        while (++i < n) d = Math.max(d, depth(children[i]));
      }
      return 1 + d;
    }
    function partition(d, i) {
      var nodes = hierarchy.call(this, d, i);
      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
      return nodes;
    }
    partition.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return partition;
    };
    return d3_layout_hierarchyRebind(partition, hierarchy);
  };
  d3.layout.pie = function() {
    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
    function pie(data) {
      var n = data.length, values = data.map(function(d, i) {
        return +value.call(pie, d, i);
      }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), k = (da - n * pa) / d3.sum(values), index = d3.range(n), arcs = [], v;
      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
        return values[j] - values[i];
      } : function(i, j) {
        return sort(data[i], data[j]);
      });
      index.forEach(function(i) {
        arcs[i] = {
          data: data[i],
          value: v = values[i],
          startAngle: a,
          endAngle: a += v * k + pa,
          padAngle: p
        };
      });
      return arcs;
    }
    pie.value = function(_) {
      if (!arguments.length) return value;
      value = _;
      return pie;
    };
    pie.sort = function(_) {
      if (!arguments.length) return sort;
      sort = _;
      return pie;
    };
    pie.startAngle = function(_) {
      if (!arguments.length) return startAngle;
      startAngle = _;
      return pie;
    };
    pie.endAngle = function(_) {
      if (!arguments.length) return endAngle;
      endAngle = _;
      return pie;
    };
    pie.padAngle = function(_) {
      if (!arguments.length) return padAngle;
      padAngle = _;
      return pie;
    };
    return pie;
  };
  var d3_layout_pieSortByValue = {};
  d3.layout.stack = function() {
    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
    function stack(data, index) {
      if (!(n = data.length)) return data;
      var series = data.map(function(d, i) {
        return values.call(stack, d, i);
      });
      var points = series.map(function(d) {
        return d.map(function(v, i) {
          return [ x.call(stack, v, i), y.call(stack, v, i) ];
        });
      });
      var orders = order.call(stack, points, index);
      series = d3.permute(series, orders);
      points = d3.permute(points, orders);
      var offsets = offset.call(stack, points, index);
      var m = series[0].length, n, i, j, o;
      for (j = 0; j < m; ++j) {
        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
        for (i = 1; i < n; ++i) {
          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
        }
      }
      return data;
    }
    stack.values = function(x) {
      if (!arguments.length) return values;
      values = x;
      return stack;
    };
    stack.order = function(x) {
      if (!arguments.length) return order;
      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
      return stack;
    };
    stack.offset = function(x) {
      if (!arguments.length) return offset;
      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
      return stack;
    };
    stack.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      return stack;
    };
    stack.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      return stack;
    };
    stack.out = function(z) {
      if (!arguments.length) return out;
      out = z;
      return stack;
    };
    return stack;
  };
  function d3_layout_stackX(d) {
    return d.x;
  }
  function d3_layout_stackY(d) {
    return d.y;
  }
  function d3_layout_stackOut(d, y0, y) {
    d.y0 = y0;
    d.y = y;
  }
  var d3_layout_stackOrders = d3.map({
    "inside-out": function(data) {
      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
        return max[a] - max[b];
      }), top = 0, bottom = 0, tops = [], bottoms = [];
      for (i = 0; i < n; ++i) {
        j = index[i];
        if (top < bottom) {
          top += sums[j];
          tops.push(j);
        } else {
          bottom += sums[j];
          bottoms.push(j);
        }
      }
      return bottoms.reverse().concat(tops);
    },
    reverse: function(data) {
      return d3.range(data.length).reverse();
    },
    "default": d3_layout_stackOrderDefault
  });
  var d3_layout_stackOffsets = d3.map({
    silhouette: function(data) {
      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o > max) max = o;
        sums.push(o);
      }
      for (j = 0; j < m; ++j) {
        y0[j] = (max - sums[j]) / 2;
      }
      return y0;
    },
    wiggle: function(data) {
      var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
      y0[0] = o = o0 = 0;
      for (j = 1; j < m; ++j) {
        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
          }
          s2 += s3 * data[i][j][1];
        }
        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
        if (o < o0) o0 = o;
      }
      for (j = 0; j < m; ++j) y0[j] -= o0;
      return y0;
    },
    expand: function(data) {
      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
      }
      for (j = 0; j < m; ++j) y0[j] = 0;
      return y0;
    },
    zero: d3_layout_stackOffsetZero
  });
  function d3_layout_stackOrderDefault(data) {
    return d3.range(data.length);
  }
  function d3_layout_stackOffsetZero(data) {
    var j = -1, m = data[0].length, y0 = [];
    while (++j < m) y0[j] = 0;
    return y0;
  }
  function d3_layout_stackMaxIndex(array) {
    var i = 1, j = 0, v = array[0][1], k, n = array.length;
    for (;i < n; ++i) {
      if ((k = array[i][1]) > v) {
        j = i;
        v = k;
      }
    }
    return j;
  }
  function d3_layout_stackReduceSum(d) {
    return d.reduce(d3_layout_stackSum, 0);
  }
  function d3_layout_stackSum(p, d) {
    return p + d[1];
  }
  d3.layout.histogram = function() {
    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
    function histogram(data, i) {
      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
      while (++i < m) {
        bin = bins[i] = [];
        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
        bin.y = 0;
      }
      if (m > 0) {
        i = -1;
        while (++i < n) {
          x = values[i];
          if (x >= range[0] && x <= range[1]) {
            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
            bin.y += k;
            bin.push(data[i]);
          }
        }
      }
      return bins;
    }
    histogram.value = function(x) {
      if (!arguments.length) return valuer;
      valuer = x;
      return histogram;
    };
    histogram.range = function(x) {
      if (!arguments.length) return ranger;
      ranger = d3_functor(x);
      return histogram;
    };
    histogram.bins = function(x) {
      if (!arguments.length) return binner;
      binner = typeof x === "number" ? function(range) {
        return d3_layout_histogramBinFixed(range, x);
      } : d3_functor(x);
      return histogram;
    };
    histogram.frequency = function(x) {
      if (!arguments.length) return frequency;
      frequency = !!x;
      return histogram;
    };
    return histogram;
  };
  function d3_layout_histogramBinSturges(range, values) {
    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
  }
  function d3_layout_histogramBinFixed(range, n) {
    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
    while (++x <= n) f[x] = m * x + b;
    return f;
  }
  function d3_layout_histogramRange(values) {
    return [ d3.min(values), d3.max(values) ];
  }
  d3.layout.pack = function() {
    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
    function pack(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
        return radius;
      };
      root.x = root.y = 0;
      d3_layout_hierarchyVisitAfter(root, function(d) {
        d.r = +r(d.value);
      });
      d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
      if (padding) {
        var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
        d3_layout_hierarchyVisitAfter(root, function(d) {
          d.r += dr;
        });
        d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
        d3_layout_hierarchyVisitAfter(root, function(d) {
          d.r -= dr;
        });
      }
      d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
      return nodes;
    }
    pack.size = function(_) {
      if (!arguments.length) return size;
      size = _;
      return pack;
    };
    pack.radius = function(_) {
      if (!arguments.length) return radius;
      radius = _ == null || typeof _ === "function" ? _ : +_;
      return pack;
    };
    pack.padding = function(_) {
      if (!arguments.length) return padding;
      padding = +_;
      return pack;
    };
    return d3_layout_hierarchyRebind(pack, hierarchy);
  };
  function d3_layout_packSort(a, b) {
    return a.value - b.value;
  }
  function d3_layout_packInsert(a, b) {
    var c = a._pack_next;
    a._pack_next = b;
    b._pack_prev = a;
    b._pack_next = c;
    c._pack_prev = b;
  }
  function d3_layout_packSplice(a, b) {
    a._pack_next = b;
    b._pack_prev = a;
  }
  function d3_layout_packIntersects(a, b) {
    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
    return .999 * dr * dr > dx * dx + dy * dy;
  }
  function d3_layout_packSiblings(node) {
    if (!(nodes = node.children) || !(n = nodes.length)) return;
    var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
    function bound(node) {
      xMin = Math.min(node.x - node.r, xMin);
      xMax = Math.max(node.x + node.r, xMax);
      yMin = Math.min(node.y - node.r, yMin);
      yMax = Math.max(node.y + node.r, yMax);
    }
    nodes.forEach(d3_layout_packLink);
    a = nodes[0];
    a.x = -a.r;
    a.y = 0;
    bound(a);
    if (n > 1) {
      b = nodes[1];
      b.x = b.r;
      b.y = 0;
      bound(b);
      if (n > 2) {
        c = nodes[2];
        d3_layout_packPlace(a, b, c);
        bound(c);
        d3_layout_packInsert(a, c);
        a._pack_prev = c;
        d3_layout_packInsert(c, b);
        b = a._pack_next;
        for (i = 3; i < n; i++) {
          d3_layout_packPlace(a, b, c = nodes[i]);
          var isect = 0, s1 = 1, s2 = 1;
          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
            if (d3_layout_packIntersects(j, c)) {
              isect = 1;
              break;
            }
          }
          if (isect == 1) {
            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
              if (d3_layout_packIntersects(k, c)) {
                break;
              }
            }
          }
          if (isect) {
            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
            i--;
          } else {
            d3_layout_packInsert(a, c);
            b = c;
            bound(c);
          }
        }
      }
    }
    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
    for (i = 0; i < n; i++) {
      c = nodes[i];
      c.x -= cx;
      c.y -= cy;
      cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
    }
    node.r = cr;
    nodes.forEach(d3_layout_packUnlink);
  }
  function d3_layout_packLink(node) {
    node._pack_next = node._pack_prev = node;
  }
  function d3_layout_packUnlink(node) {
    delete node._pack_next;
    delete node._pack_prev;
  }
  function d3_layout_packTransform(node, x, y, k) {
    var children = node.children;
    node.x = x += k * node.x;
    node.y = y += k * node.y;
    node.r *= k;
    if (children) {
      var i = -1, n = children.length;
      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
    }
  }
  function d3_layout_packPlace(a, b, c) {
    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
    if (db && (dx || dy)) {
      var da = b.r + c.r, dc = dx * dx + dy * dy;
      da *= da;
      db *= db;
      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
      c.x = a.x + x * dx + y * dy;
      c.y = a.y + x * dy - y * dx;
    } else {
      c.x = a.x + db;
      c.y = a.y;
    }
  }
  d3.layout.tree = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
    function tree(d, i) {
      var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
      d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
      d3_layout_hierarchyVisitBefore(root1, secondWalk);
      if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
        var left = root0, right = root0, bottom = root0;
        d3_layout_hierarchyVisitBefore(root0, function(node) {
          if (node.x < left.x) left = node;
          if (node.x > right.x) right = node;
          if (node.depth > bottom.depth) bottom = node;
        });
        var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
        d3_layout_hierarchyVisitBefore(root0, function(node) {
          node.x = (node.x + tx) * kx;
          node.y = node.depth * ky;
        });
      }
      return nodes;
    }
    function wrapTree(root0) {
      var root1 = {
        A: null,
        children: [ root0 ]
      }, queue = [ root1 ], node1;
      while ((node1 = queue.pop()) != null) {
        for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
          queue.push((children[i] = child = {
            _: children[i],
            parent: node1,
            children: (child = children[i].children) && child.slice() || [],
            A: null,
            a: null,
            z: 0,
            m: 0,
            c: 0,
            s: 0,
            t: null,
            i: i
          }).a = child);
        }
      }
      return root1.children[0];
    }
    function firstWalk(v) {
      var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
      if (children.length) {
        d3_layout_treeShift(v);
        var midpoint = (children[0].z + children[children.length - 1].z) / 2;
        if (w) {
          v.z = w.z + separation(v._, w._);
          v.m = v.z - midpoint;
        } else {
          v.z = midpoint;
        }
      } else if (w) {
        v.z = w.z + separation(v._, w._);
      }
      v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
    }
    function secondWalk(v) {
      v._.x = v.z + v.parent.m;
      v.m += v.parent.m;
    }
    function apportion(v, w, ancestor) {
      if (w) {
        var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
          vom = d3_layout_treeLeft(vom);
          vop = d3_layout_treeRight(vop);
          vop.a = v;
          shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
          if (shift > 0) {
            d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
            sip += shift;
            sop += shift;
          }
          sim += vim.m;
          sip += vip.m;
          som += vom.m;
          sop += vop.m;
        }
        if (vim && !d3_layout_treeRight(vop)) {
          vop.t = vim;
          vop.m += sim - sop;
        }
        if (vip && !d3_layout_treeLeft(vom)) {
          vom.t = vip;
          vom.m += sip - som;
          ancestor = v;
        }
      }
      return ancestor;
    }
    function sizeNode(node) {
      node.x *= size[0];
      node.y = node.depth * size[1];
    }
    tree.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return tree;
    };
    tree.size = function(x) {
      if (!arguments.length) return nodeSize ? null : size;
      nodeSize = (size = x) == null ? sizeNode : null;
      return tree;
    };
    tree.nodeSize = function(x) {
      if (!arguments.length) return nodeSize ? size : null;
      nodeSize = (size = x) == null ? null : sizeNode;
      return tree;
    };
    return d3_layout_hierarchyRebind(tree, hierarchy);
  };
  function d3_layout_treeSeparation(a, b) {
    return a.parent == b.parent ? 1 : 2;
  }
  function d3_layout_treeLeft(v) {
    var children = v.children;
    return children.length ? children[0] : v.t;
  }
  function d3_layout_treeRight(v) {
    var children = v.children, n;
    return (n = children.length) ? children[n - 1] : v.t;
  }
  function d3_layout_treeMove(wm, wp, shift) {
    var change = shift / (wp.i - wm.i);
    wp.c -= change;
    wp.s += shift;
    wm.c += change;
    wp.z += shift;
    wp.m += shift;
  }
  function d3_layout_treeShift(v) {
    var shift = 0, change = 0, children = v.children, i = children.length, w;
    while (--i >= 0) {
      w = children[i];
      w.z += shift;
      w.m += shift;
      shift += w.s + (change += w.c);
    }
  }
  function d3_layout_treeAncestor(vim, v, ancestor) {
    return vim.a.parent === v.parent ? vim.a : ancestor;
  }
  d3.layout.cluster = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
    function cluster(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
      d3_layout_hierarchyVisitAfter(root, function(node) {
        var children = node.children;
        if (children && children.length) {
          node.x = d3_layout_clusterX(children);
          node.y = d3_layout_clusterY(children);
        } else {
          node.x = previousNode ? x += separation(node, previousNode) : 0;
          node.y = 0;
          previousNode = node;
        }
      });
      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
      d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
        node.x = (node.x - root.x) * size[0];
        node.y = (root.y - node.y) * size[1];
      } : function(node) {
        node.x = (node.x - x0) / (x1 - x0) * size[0];
        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
      });
      return nodes;
    }
    cluster.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return cluster;
    };
    cluster.size = function(x) {
      if (!arguments.length) return nodeSize ? null : size;
      nodeSize = (size = x) == null;
      return cluster;
    };
    cluster.nodeSize = function(x) {
      if (!arguments.length) return nodeSize ? size : null;
      nodeSize = (size = x) != null;
      return cluster;
    };
    return d3_layout_hierarchyRebind(cluster, hierarchy);
  };
  function d3_layout_clusterY(children) {
    return 1 + d3.max(children, function(child) {
      return child.y;
    });
  }
  function d3_layout_clusterX(children) {
    return children.reduce(function(x, child) {
      return x + child.x;
    }, 0) / children.length;
  }
  function d3_layout_clusterLeft(node) {
    var children = node.children;
    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
  }
  function d3_layout_clusterRight(node) {
    var children = node.children, n;
    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
  }
  d3.layout.treemap = function() {
    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
    function scale(children, k) {
      var i = -1, n = children.length, child, area;
      while (++i < n) {
        area = (child = children[i]).value * (k < 0 ? 0 : k);
        child.area = isNaN(area) || area <= 0 ? 0 : area;
      }
    }
    function squarify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while ((n = remaining.length) > 0) {
          row.push(child = remaining[n - 1]);
          row.area += child.area;
          if (mode !== "squarify" || (score = worst(row, u)) <= best) {
            remaining.pop();
            best = score;
          } else {
            row.area -= row.pop().area;
            position(row, u, rect, false);
            u = Math.min(rect.dx, rect.dy);
            row.length = row.area = 0;
            best = Infinity;
          }
        }
        if (row.length) {
          position(row, u, rect, true);
          row.length = row.area = 0;
        }
        children.forEach(squarify);
      }
    }
    function stickify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), remaining = children.slice(), child, row = [];
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while (child = remaining.pop()) {
          row.push(child);
          row.area += child.area;
          if (child.z != null) {
            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
            row.length = row.area = 0;
          }
        }
        children.forEach(stickify);
      }
    }
    function worst(row, u) {
      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
      while (++i < n) {
        if (!(r = row[i].area)) continue;
        if (r < rmin) rmin = r;
        if (r > rmax) rmax = r;
      }
      s *= s;
      u *= u;
      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
    }
    function position(row, u, rect, flush) {
      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
      if (u == rect.dx) {
        if (flush || v > rect.dy) v = rect.dy;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dy = v;
          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
        }
        o.z = true;
        o.dx += rect.x + rect.dx - x;
        rect.y += v;
        rect.dy -= v;
      } else {
        if (flush || v > rect.dx) v = rect.dx;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dx = v;
          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
        }
        o.z = false;
        o.dy += rect.y + rect.dy - y;
        rect.x += v;
        rect.dx -= v;
      }
    }
    function treemap(d) {
      var nodes = stickies || hierarchy(d), root = nodes[0];
      root.x = 0;
      root.y = 0;
      root.dx = size[0];
      root.dy = size[1];
      if (stickies) hierarchy.revalue(root);
      scale([ root ], root.dx * root.dy / root.value);
      (stickies ? stickify : squarify)(root);
      if (sticky) stickies = nodes;
      return nodes;
    }
    treemap.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return treemap;
    };
    treemap.padding = function(x) {
      if (!arguments.length) return padding;
      function padFunction(node) {
        var p = x.call(treemap, node, node.depth);
        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
      }
      function padConstant(node) {
        return d3_layout_treemapPad(node, x);
      }
      var type;
      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ], 
      padConstant) : padConstant;
      return treemap;
    };
    treemap.round = function(x) {
      if (!arguments.length) return round != Number;
      round = x ? Math.round : Number;
      return treemap;
    };
    treemap.sticky = function(x) {
      if (!arguments.length) return sticky;
      sticky = x;
      stickies = null;
      return treemap;
    };
    treemap.ratio = function(x) {
      if (!arguments.length) return ratio;
      ratio = x;
      return treemap;
    };
    treemap.mode = function(x) {
      if (!arguments.length) return mode;
      mode = x + "";
      return treemap;
    };
    return d3_layout_hierarchyRebind(treemap, hierarchy);
  };
  function d3_layout_treemapPadNull(node) {
    return {
      x: node.x,
      y: node.y,
      dx: node.dx,
      dy: node.dy
    };
  }
  function d3_layout_treemapPad(node, padding) {
    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
    if (dx < 0) {
      x += dx / 2;
      dx = 0;
    }
    if (dy < 0) {
      y += dy / 2;
      dy = 0;
    }
    return {
      x: x,
      y: y,
      dx: dx,
      dy: dy
    };
  }
  d3.random = {
    normal: function(µ, σ) {
      var n = arguments.length;
      if (n < 2) σ = 1;
      if (n < 1) µ = 0;
      return function() {
        var x, y, r;
        do {
          x = Math.random() * 2 - 1;
          y = Math.random() * 2 - 1;
          r = x * x + y * y;
        } while (!r || r > 1);
        return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
      };
    },
    logNormal: function() {
      var random = d3.random.normal.apply(d3, arguments);
      return function() {
        return Math.exp(random());
      };
    },
    bates: function(m) {
      var random = d3.random.irwinHall(m);
      return function() {
        return random() / m;
      };
    },
    irwinHall: function(m) {
      return function() {
        for (var s = 0, j = 0; j < m; j++) s += Math.random();
        return s;
      };
    }
  };
  d3.scale = {};
  function d3_scaleExtent(domain) {
    var start = domain[0], stop = domain[domain.length - 1];
    return start < stop ? [ start, stop ] : [ stop, start ];
  }
  function d3_scaleRange(scale) {
    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
  }
  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
    return function(x) {
      return i(u(x));
    };
  }
  function d3_scale_nice(domain, nice) {
    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
    if (x1 < x0) {
      dx = i0, i0 = i1, i1 = dx;
      dx = x0, x0 = x1, x1 = dx;
    }
    domain[i0] = nice.floor(x0);
    domain[i1] = nice.ceil(x1);
    return domain;
  }
  function d3_scale_niceStep(step) {
    return step ? {
      floor: function(x) {
        return Math.floor(x / step) * step;
      },
      ceil: function(x) {
        return Math.ceil(x / step) * step;
      }
    } : d3_scale_niceIdentity;
  }
  var d3_scale_niceIdentity = {
    floor: d3_identity,
    ceil: d3_identity
  };
  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
    if (domain[k] < domain[0]) {
      domain = domain.slice().reverse();
      range = range.slice().reverse();
    }
    while (++j <= k) {
      u.push(uninterpolate(domain[j - 1], domain[j]));
      i.push(interpolate(range[j - 1], range[j]));
    }
    return function(x) {
      var j = d3.bisect(domain, x, 1, k) - 1;
      return i[j](u[j](x));
    };
  }
  d3.scale.linear = function() {
    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
  };
  function d3_scale_linear(domain, range, interpolate, clamp) {
    var output, input;
    function rescale() {
      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
      output = linear(domain, range, uninterpolate, interpolate);
      input = linear(range, domain, uninterpolate, d3_interpolate);
      return scale;
    }
    function scale(x) {
      return output(x);
    }
    scale.invert = function(y) {
      return input(y);
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(Number);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.rangeRound = function(x) {
      return scale.range(x).interpolate(d3_interpolateRound);
    };
    scale.clamp = function(x) {
      if (!arguments.length) return clamp;
      clamp = x;
      return rescale();
    };
    scale.interpolate = function(x) {
      if (!arguments.length) return interpolate;
      interpolate = x;
      return rescale();
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    scale.nice = function(m) {
      d3_scale_linearNice(domain, m);
      return rescale();
    };
    scale.copy = function() {
      return d3_scale_linear(domain, range, interpolate, clamp);
    };
    return rescale();
  }
  function d3_scale_linearRebind(scale, linear) {
    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
  }
  function d3_scale_linearNice(domain, m) {
    return d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
  }
  function d3_scale_linearTickRange(domain, m) {
    if (m == null) m = 10;
    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
    extent[0] = Math.ceil(extent[0] / step) * step;
    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
    extent[2] = step;
    return extent;
  }
  function d3_scale_linearTicks(domain, m) {
    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
  }
  function d3_scale_linearTickFormat(domain, m, format) {
    var range = d3_scale_linearTickRange(domain, m);
    if (format) {
      var match = d3_format_re.exec(format);
      match.shift();
      if (match[8] === "s") {
        var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
        if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
        match[8] = "f";
        format = d3.format(match.join(""));
        return function(d) {
          return format(prefix.scale(d)) + prefix.symbol;
        };
      }
      if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
      format = match.join("");
    } else {
      format = ",." + d3_scale_linearPrecision(range[2]) + "f";
    }
    return d3.format(format);
  }
  var d3_scale_linearFormatSignificant = {
    s: 1,
    g: 1,
    p: 1,
    r: 1,
    e: 1
  };
  function d3_scale_linearPrecision(value) {
    return -Math.floor(Math.log(value) / Math.LN10 + .01);
  }
  function d3_scale_linearFormatPrecision(type, range) {
    var p = d3_scale_linearPrecision(range[2]);
    return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
  }
  d3.scale.log = function() {
    return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
  };
  function d3_scale_log(linear, base, positive, domain) {
    function log(x) {
      return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
    }
    function pow(x) {
      return positive ? Math.pow(base, x) : -Math.pow(base, -x);
    }
    function scale(x) {
      return linear(log(x));
    }
    scale.invert = function(x) {
      return pow(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      positive = x[0] >= 0;
      linear.domain((domain = x.map(Number)).map(log));
      return scale;
    };
    scale.base = function(_) {
      if (!arguments.length) return base;
      base = +_;
      linear.domain(domain.map(log));
      return scale;
    };
    scale.nice = function() {
      var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
      linear.domain(niced);
      domain = niced.map(pow);
      return scale;
    };
    scale.ticks = function() {
      var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
      if (isFinite(j - i)) {
        if (positive) {
          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
          ticks.push(pow(i));
        } else {
          ticks.push(pow(i));
          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
        }
        for (i = 0; ticks[i] < u; i++) {}
        for (j = ticks.length; ticks[j - 1] > v; j--) {}
        ticks = ticks.slice(i, j);
      }
      return ticks;
    };
    scale.tickFormat = function(n, format) {
      if (!arguments.length) return d3_scale_logFormat;
      if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
      var k = Math.max(.1, n / scale.ticks().length), f = positive ? (e = 1e-12, Math.ceil) : (e = -1e-12, 
      Math.floor), e;
      return function(d) {
        return d / pow(f(log(d) + e)) <= k ? format(d) : "";
      };
    };
    scale.copy = function() {
      return d3_scale_log(linear.copy(), base, positive, domain);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
    floor: function(x) {
      return -Math.ceil(-x);
    },
    ceil: function(x) {
      return -Math.floor(-x);
    }
  };
  d3.scale.pow = function() {
    return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
  };
  function d3_scale_pow(linear, exponent, domain) {
    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
    function scale(x) {
      return linear(powp(x));
    }
    scale.invert = function(x) {
      return powb(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      linear.domain((domain = x.map(Number)).map(powp));
      return scale;
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    scale.nice = function(m) {
      return scale.domain(d3_scale_linearNice(domain, m));
    };
    scale.exponent = function(x) {
      if (!arguments.length) return exponent;
      powp = d3_scale_powPow(exponent = x);
      powb = d3_scale_powPow(1 / exponent);
      linear.domain(domain.map(powp));
      return scale;
    };
    scale.copy = function() {
      return d3_scale_pow(linear.copy(), exponent, domain);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_scale_powPow(e) {
    return function(x) {
      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
    };
  }
  d3.scale.sqrt = function() {
    return d3.scale.pow().exponent(.5);
  };
  d3.scale.ordinal = function() {
    return d3_scale_ordinal([], {
      t: "range",
      a: [ [] ]
    });
  };
  function d3_scale_ordinal(domain, ranger) {
    var index, range, rangeBand;
    function scale(x) {
      return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
    }
    function steps(start, step) {
      return d3.range(domain.length).map(function(i) {
        return start + step * i;
      });
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = [];
      index = new d3_Map();
      var i = -1, n = x.length, xi;
      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
      return scale[ranger.t].apply(scale, ranger.a);
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      rangeBand = 0;
      ranger = {
        t: "range",
        a: arguments
      };
      return scale;
    };
    scale.rangePoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2, 
      0) : (stop - start) / (domain.length - 1 + padding);
      range = steps(start + step * padding / 2, step);
      rangeBand = 0;
      ranger = {
        t: "rangePoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundPoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2), 
      0) : (stop - start) / (domain.length - 1 + padding) | 0;
      range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
      rangeBand = 0;
      ranger = {
        t: "rangeRoundPoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
      range = steps(start + step * outerPadding, step);
      if (reverse) range.reverse();
      rangeBand = step * (1 - padding);
      ranger = {
        t: "rangeBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
      range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
      if (reverse) range.reverse();
      rangeBand = Math.round(step * (1 - padding));
      ranger = {
        t: "rangeRoundBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeBand = function() {
      return rangeBand;
    };
    scale.rangeExtent = function() {
      return d3_scaleExtent(ranger.a[0]);
    };
    scale.copy = function() {
      return d3_scale_ordinal(domain, ranger);
    };
    return scale.domain(domain);
  }
  d3.scale.category10 = function() {
    return d3.scale.ordinal().range(d3_category10);
  };
  d3.scale.category20 = function() {
    return d3.scale.ordinal().range(d3_category20);
  };
  d3.scale.category20b = function() {
    return d3.scale.ordinal().range(d3_category20b);
  };
  d3.scale.category20c = function() {
    return d3.scale.ordinal().range(d3_category20c);
  };
  var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
  var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
  var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
  var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
  d3.scale.quantile = function() {
    return d3_scale_quantile([], []);
  };
  function d3_scale_quantile(domain, range) {
    var thresholds;
    function rescale() {
      var k = 0, q = range.length;
      thresholds = [];
      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
      return scale;
    }
    function scale(x) {
      if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.quantiles = function() {
      return thresholds;
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
    };
    scale.copy = function() {
      return d3_scale_quantile(domain, range);
    };
    return rescale();
  }
  d3.scale.quantize = function() {
    return d3_scale_quantize(0, 1, [ 0, 1 ]);
  };
  function d3_scale_quantize(x0, x1, range) {
    var kx, i;
    function scale(x) {
      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
    }
    function rescale() {
      kx = range.length / (x1 - x0);
      i = range.length - 1;
      return scale;
    }
    scale.domain = function(x) {
      if (!arguments.length) return [ x0, x1 ];
      x0 = +x[0];
      x1 = +x[x.length - 1];
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      y = y < 0 ? NaN : y / kx + x0;
      return [ y, y + 1 / kx ];
    };
    scale.copy = function() {
      return d3_scale_quantize(x0, x1, range);
    };
    return rescale();
  }
  d3.scale.threshold = function() {
    return d3_scale_threshold([ .5 ], [ 0, 1 ]);
  };
  function d3_scale_threshold(domain, range) {
    function scale(x) {
      if (x <= x) return range[d3.bisect(domain, x)];
    }
    scale.domain = function(_) {
      if (!arguments.length) return domain;
      domain = _;
      return scale;
    };
    scale.range = function(_) {
      if (!arguments.length) return range;
      range = _;
      return scale;
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      return [ domain[y - 1], domain[y] ];
    };
    scale.copy = function() {
      return d3_scale_threshold(domain, range);
    };
    return scale;
  }
  d3.scale.identity = function() {
    return d3_scale_identity([ 0, 1 ]);
  };
  function d3_scale_identity(domain) {
    function identity(x) {
      return +x;
    }
    identity.invert = identity;
    identity.domain = identity.range = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(identity);
      return identity;
    };
    identity.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    identity.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    identity.copy = function() {
      return d3_scale_identity(domain);
    };
    return identity;
  }
  d3.svg = {};
  function d3_zero() {
    return 0;
  }
  d3.svg.arc = function() {
    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
    function arc() {
      var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
      if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
      if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
      var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
      if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
        rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
        if (!cw) p1 *= -1;
        if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
        if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
      }
      if (r1) {
        x0 = r1 * Math.cos(a0 + p1);
        y0 = r1 * Math.sin(a0 + p1);
        x1 = r1 * Math.cos(a1 - p1);
        y1 = r1 * Math.sin(a1 - p1);
        var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
        if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
          var h1 = (a0 + a1) / 2;
          x0 = r1 * Math.cos(h1);
          y0 = r1 * Math.sin(h1);
          x1 = y1 = null;
        }
      } else {
        x0 = y0 = 0;
      }
      if (r0) {
        x2 = r0 * Math.cos(a1 - p0);
        y2 = r0 * Math.sin(a1 - p0);
        x3 = r0 * Math.cos(a0 + p0);
        y3 = r0 * Math.sin(a0 + p0);
        var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
        if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
          var h0 = (a0 + a1) / 2;
          x2 = r0 * Math.cos(h0);
          y2 = r0 * Math.sin(h0);
          x3 = y3 = null;
        }
      } else {
        x2 = y2 = 0;
      }
      if ((rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
        cr = r0 < r1 ^ cw ? 0 : 1;
        var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
        if (x1 != null) {
          var rc1 = Math.min(rc, (r1 - lc) / (kc + 1)), t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
          if (rc === rc1) {
            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
          } else {
            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
          }
        } else {
          path.push("M", x0, ",", y0);
        }
        if (x3 != null) {
          var rc0 = Math.min(rc, (r0 - lc) / (kc - 1)), t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
          if (rc === rc0) {
            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
          } else {
            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
          }
        } else {
          path.push("L", x2, ",", y2);
        }
      } else {
        path.push("M", x0, ",", y0);
        if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
        path.push("L", x2, ",", y2);
        if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
      }
      path.push("Z");
      return path.join("");
    }
    function circleSegment(r1, cw) {
      return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
    }
    arc.innerRadius = function(v) {
      if (!arguments.length) return innerRadius;
      innerRadius = d3_functor(v);
      return arc;
    };
    arc.outerRadius = function(v) {
      if (!arguments.length) return outerRadius;
      outerRadius = d3_functor(v);
      return arc;
    };
    arc.cornerRadius = function(v) {
      if (!arguments.length) return cornerRadius;
      cornerRadius = d3_functor(v);
      return arc;
    };
    arc.padRadius = function(v) {
      if (!arguments.length) return padRadius;
      padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
      return arc;
    };
    arc.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return arc;
    };
    arc.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return arc;
    };
    arc.padAngle = function(v) {
      if (!arguments.length) return padAngle;
      padAngle = d3_functor(v);
      return arc;
    };
    arc.centroid = function() {
      var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
      return [ Math.cos(a) * r, Math.sin(a) * r ];
    };
    return arc;
  };
  var d3_svg_arcAuto = "auto";
  function d3_svg_arcInnerRadius(d) {
    return d.innerRadius;
  }
  function d3_svg_arcOuterRadius(d) {
    return d.outerRadius;
  }
  function d3_svg_arcStartAngle(d) {
    return d.startAngle;
  }
  function d3_svg_arcEndAngle(d) {
    return d.endAngle;
  }
  function d3_svg_arcPadAngle(d) {
    return d && d.padAngle;
  }
  function d3_svg_arcSweep(x0, y0, x1, y1) {
    return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
  }
  function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
    var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(r * r * d2 - D * D), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
    if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
    return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
  }
  function d3_svg_line(projection) {
    var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
    function line(data) {
      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
      function segment() {
        segments.push("M", interpolate(projection(points), tension));
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
        } else if (points.length) {
          segment();
          points = [];
        }
      }
      if (points.length) segment();
      return segments.length ? segments.join("") : null;
    }
    line.x = function(_) {
      if (!arguments.length) return x;
      x = _;
      return line;
    };
    line.y = function(_) {
      if (!arguments.length) return y;
      y = _;
      return line;
    };
    line.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return line;
    };
    line.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      return line;
    };
    line.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return line;
    };
    return line;
  }
  d3.svg.line = function() {
    return d3_svg_line(d3_identity);
  };
  var d3_svg_lineInterpolators = d3.map({
    linear: d3_svg_lineLinear,
    "linear-closed": d3_svg_lineLinearClosed,
    step: d3_svg_lineStep,
    "step-before": d3_svg_lineStepBefore,
    "step-after": d3_svg_lineStepAfter,
    basis: d3_svg_lineBasis,
    "basis-open": d3_svg_lineBasisOpen,
    "basis-closed": d3_svg_lineBasisClosed,
    bundle: d3_svg_lineBundle,
    cardinal: d3_svg_lineCardinal,
    "cardinal-open": d3_svg_lineCardinalOpen,
    "cardinal-closed": d3_svg_lineCardinalClosed,
    monotone: d3_svg_lineMonotone
  });
  d3_svg_lineInterpolators.forEach(function(key, value) {
    value.key = key;
    value.closed = /-closed$/.test(key);
  });
  function d3_svg_lineLinear(points) {
    return points.join("L");
  }
  function d3_svg_lineLinearClosed(points) {
    return d3_svg_lineLinear(points) + "Z";
  }
  function d3_svg_lineStep(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
    if (n > 1) path.push("H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepBefore(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepAfter(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
    return path.join("");
  }
  function d3_svg_lineCardinalOpen(points, tension) {
    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineCardinalClosed(points, tension) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
  }
  function d3_svg_lineCardinal(points, tension) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineHermite(points, tangents) {
    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
      return d3_svg_lineLinear(points);
    }
    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
    if (quad) {
      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
      p0 = points[1];
      pi = 2;
    }
    if (tangents.length > 1) {
      t = tangents[1];
      p = points[pi];
      pi++;
      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      for (var i = 2; i < tangents.length; i++, pi++) {
        p = points[pi];
        t = tangents[i];
        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      }
    }
    if (quad) {
      var lp = points[pi];
      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
    }
    return path;
  }
  function d3_svg_lineCardinalTangents(points, tension) {
    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
    while (++i < n) {
      p0 = p1;
      p1 = p2;
      p2 = points[i];
      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
    }
    return tangents;
  }
  function d3_svg_lineBasis(points) {
    if (points.length < 3) return d3_svg_lineLinear(points);
    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    points.push(points[n - 1]);
    while (++i <= n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    points.pop();
    path.push("L", pi);
    return path.join("");
  }
  function d3_svg_lineBasisOpen(points) {
    if (points.length < 4) return d3_svg_lineLinear(points);
    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
    while (++i < 3) {
      pi = points[i];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
    --i;
    while (++i < n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBasisClosed(points) {
    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
    while (++i < 4) {
      pi = points[i % n];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    --i;
    while (++i < m) {
      pi = points[i % n];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBundle(points, tension) {
    var n = points.length - 1;
    if (n) {
      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
      while (++i <= n) {
        p = points[i];
        t = i / n;
        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
      }
    }
    return d3_svg_lineBasis(points);
  }
  function d3_svg_lineDot4(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
  }
  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
  function d3_svg_lineBasisBezier(path, x, y) {
    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
  }
  function d3_svg_lineSlope(p0, p1) {
    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
  }
  function d3_svg_lineFiniteDifferences(points) {
    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
    while (++i < j) {
      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
    }
    m[i] = d;
    return m;
  }
  function d3_svg_lineMonotoneTangents(points) {
    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
    while (++i < j) {
      d = d3_svg_lineSlope(points[i], points[i + 1]);
      if (abs(d) < ε) {
        m[i] = m[i + 1] = 0;
      } else {
        a = m[i] / d;
        b = m[i + 1] / d;
        s = a * a + b * b;
        if (s > 9) {
          s = d * 3 / Math.sqrt(s);
          m[i] = s * a;
          m[i + 1] = s * b;
        }
      }
    }
    i = -1;
    while (++i <= j) {
      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
      tangents.push([ s || 0, m[i] * s || 0 ]);
    }
    return tangents;
  }
  function d3_svg_lineMonotone(points) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
  }
  d3.svg.line.radial = function() {
    var line = d3_svg_line(d3_svg_lineRadial);
    line.radius = line.x, delete line.x;
    line.angle = line.y, delete line.y;
    return line;
  };
  function d3_svg_lineRadial(points) {
    var point, i = -1, n = points.length, r, a;
    while (++i < n) {
      point = points[i];
      r = point[0];
      a = point[1] - halfπ;
      point[0] = r * Math.cos(a);
      point[1] = r * Math.sin(a);
    }
    return points;
  }
  function d3_svg_area(projection) {
    var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
    function area(data) {
      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
        return x;
      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
        return y;
      } : d3_functor(y1), x, y;
      function segment() {
        segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
        } else if (points0.length) {
          segment();
          points0 = [];
          points1 = [];
        }
      }
      if (points0.length) segment();
      return segments.length ? segments.join("") : null;
    }
    area.x = function(_) {
      if (!arguments.length) return x1;
      x0 = x1 = _;
      return area;
    };
    area.x0 = function(_) {
      if (!arguments.length) return x0;
      x0 = _;
      return area;
    };
    area.x1 = function(_) {
      if (!arguments.length) return x1;
      x1 = _;
      return area;
    };
    area.y = function(_) {
      if (!arguments.length) return y1;
      y0 = y1 = _;
      return area;
    };
    area.y0 = function(_) {
      if (!arguments.length) return y0;
      y0 = _;
      return area;
    };
    area.y1 = function(_) {
      if (!arguments.length) return y1;
      y1 = _;
      return area;
    };
    area.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return area;
    };
    area.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      interpolateReverse = interpolate.reverse || interpolate;
      L = interpolate.closed ? "M" : "L";
      return area;
    };
    area.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return area;
    };
    return area;
  }
  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
  d3.svg.area = function() {
    return d3_svg_area(d3_identity);
  };
  d3.svg.area.radial = function() {
    var area = d3_svg_area(d3_svg_lineRadial);
    area.radius = area.x, delete area.x;
    area.innerRadius = area.x0, delete area.x0;
    area.outerRadius = area.x1, delete area.x1;
    area.angle = area.y, delete area.y;
    area.startAngle = area.y0, delete area.y0;
    area.endAngle = area.y1, delete area.y1;
    return area;
  };
  d3.svg.chord = function() {
    var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
    function chord(d, i) {
      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
    }
    function subgroup(self, f, d, i) {
      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
      return {
        r: r,
        a0: a0,
        a1: a1,
        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
      };
    }
    function equals(a, b) {
      return a.a0 == b.a0 && a.a1 == b.a1;
    }
    function arc(r, p, a) {
      return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
    }
    function curve(r0, p0, r1, p1) {
      return "Q 0,0 " + p1;
    }
    chord.radius = function(v) {
      if (!arguments.length) return radius;
      radius = d3_functor(v);
      return chord;
    };
    chord.source = function(v) {
      if (!arguments.length) return source;
      source = d3_functor(v);
      return chord;
    };
    chord.target = function(v) {
      if (!arguments.length) return target;
      target = d3_functor(v);
      return chord;
    };
    chord.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return chord;
    };
    chord.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return chord;
    };
    return chord;
  };
  function d3_svg_chordRadius(d) {
    return d.radius;
  }
  d3.svg.diagonal = function() {
    var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
    function diagonal(d, i) {
      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
        x: p0.x,
        y: m
      }, {
        x: p3.x,
        y: m
      }, p3 ];
      p = p.map(projection);
      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
    }
    diagonal.source = function(x) {
      if (!arguments.length) return source;
      source = d3_functor(x);
      return diagonal;
    };
    diagonal.target = function(x) {
      if (!arguments.length) return target;
      target = d3_functor(x);
      return diagonal;
    };
    diagonal.projection = function(x) {
      if (!arguments.length) return projection;
      projection = x;
      return diagonal;
    };
    return diagonal;
  };
  function d3_svg_diagonalProjection(d) {
    return [ d.x, d.y ];
  }
  d3.svg.diagonal.radial = function() {
    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
    diagonal.projection = function(x) {
      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
    };
    return diagonal;
  };
  function d3_svg_diagonalRadialProjection(projection) {
    return function() {
      var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
      return [ r * Math.cos(a), r * Math.sin(a) ];
    };
  }
  d3.svg.symbol = function() {
    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
    function symbol(d, i) {
      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
    }
    symbol.type = function(x) {
      if (!arguments.length) return type;
      type = d3_functor(x);
      return symbol;
    };
    symbol.size = function(x) {
      if (!arguments.length) return size;
      size = d3_functor(x);
      return symbol;
    };
    return symbol;
  };
  function d3_svg_symbolSize() {
    return 64;
  }
  function d3_svg_symbolType() {
    return "circle";
  }
  function d3_svg_symbolCircle(size) {
    var r = Math.sqrt(size / π);
    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
  }
  var d3_svg_symbols = d3.map({
    circle: d3_svg_symbolCircle,
    cross: function(size) {
      var r = Math.sqrt(size / 5) / 2;
      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
    },
    diamond: function(size) {
      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
    },
    square: function(size) {
      var r = Math.sqrt(size) / 2;
      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
    },
    "triangle-down": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
    },
    "triangle-up": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
    }
  });
  d3.svg.symbolTypes = d3_svg_symbols.keys();
  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
  d3_selectionPrototype.transition = function(name) {
    var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
      time: Date.now(),
      ease: d3_ease_cubicInOut,
      delay: 0,
      duration: 250
    };
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_selectionPrototype.interrupt = function(name) {
    return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
  };
  var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
  function d3_selection_interruptNS(ns) {
    return function() {
      var lock, active;
      if ((lock = this[ns]) && (active = lock[lock.active])) {
        if (--lock.count) delete lock[lock.active]; else delete this[ns];
        lock.active += .5;
        active.event && active.event.interrupt.call(this, this.__data__, active.index);
      }
    };
  }
  function d3_transition(groups, ns, id) {
    d3_subclass(groups, d3_transitionPrototype);
    groups.namespace = ns;
    groups.id = id;
    return groups;
  }
  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
  d3_transitionPrototype.call = d3_selectionPrototype.call;
  d3_transitionPrototype.empty = d3_selectionPrototype.empty;
  d3_transitionPrototype.node = d3_selectionPrototype.node;
  d3_transitionPrototype.size = d3_selectionPrototype.size;
  d3.transition = function(selection, name) {
    return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
  };
  d3.transition.prototype = d3_transitionPrototype;
  d3_transitionPrototype.select = function(selector) {
    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
    selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
          if ("__data__" in node) subnode.__data__ = node.__data__;
          d3_transitionNode(subnode, i, ns, id, node[ns][id]);
          subgroup.push(subnode);
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_transitionPrototype.selectAll = function(selector) {
    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
    selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          transition = node[ns][id];
          subnodes = selector.call(node, node.__data__, i, j);
          subgroups.push(subgroup = []);
          for (var k = -1, o = subnodes.length; ++k < o; ) {
            if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
            subgroup.push(subnode);
          }
        }
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_transitionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
          subgroup.push(node);
        }
      }
    }
    return d3_transition(subgroups, this.namespace, this.id);
  };
  d3_transitionPrototype.tween = function(name, tween) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
    return d3_selection_each(this, tween == null ? function(node) {
      node[ns][id].tween.remove(name);
    } : function(node) {
      node[ns][id].tween.set(name, tween);
    });
  };
  function d3_transition_tween(groups, name, value, tween) {
    var id = groups.id, ns = groups.namespace;
    return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
      node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
    } : (value = tween(value), function(node) {
      node[ns][id].tween.set(name, value);
    }));
  }
  d3_transitionPrototype.attr = function(nameNS, value) {
    if (arguments.length < 2) {
      for (value in nameNS) this.attr(value, nameNS[value]);
      return this;
    }
    var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrTween(b) {
      return b == null ? attrNull : (b += "", function() {
        var a = this.getAttribute(name), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttribute(name, i(t));
        });
      });
    }
    function attrTweenNS(b) {
      return b == null ? attrNullNS : (b += "", function() {
        var a = this.getAttributeNS(name.space, name.local), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttributeNS(name.space, name.local, i(t));
        });
      });
    }
    return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.attrTween = function(nameNS, tween) {
    var name = d3.ns.qualify(nameNS);
    function attrTween(d, i) {
      var f = tween.call(this, d, i, this.getAttribute(name));
      return f && function(t) {
        this.setAttribute(name, f(t));
      };
    }
    function attrTweenNS(d, i) {
      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
      return f && function(t) {
        this.setAttributeNS(name.space, name.local, f(t));
      };
    }
    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.style(priority, name[priority], value);
        return this;
      }
      priority = "";
    }
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleString(b) {
      return b == null ? styleNull : (b += "", function() {
        var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
        return a !== b && (i = d3_interpolate(a, b), function(t) {
          this.style.setProperty(name, i(t), priority);
        });
      });
    }
    return d3_transition_tween(this, "style." + name, value, styleString);
  };
  d3_transitionPrototype.styleTween = function(name, tween, priority) {
    if (arguments.length < 3) priority = "";
    function styleTween(d, i) {
      var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
      return f && function(t) {
        this.style.setProperty(name, f(t), priority);
      };
    }
    return this.tween("style." + name, styleTween);
  };
  d3_transitionPrototype.text = function(value) {
    return d3_transition_tween(this, "text", value, d3_transition_text);
  };
  function d3_transition_text(b) {
    if (b == null) b = "";
    return function() {
      this.textContent = b;
    };
  }
  d3_transitionPrototype.remove = function() {
    var ns = this.namespace;
    return this.each("end.transition", function() {
      var p;
      if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
    });
  };
  d3_transitionPrototype.ease = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].ease;
    if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
    return d3_selection_each(this, function(node) {
      node[ns][id].ease = value;
    });
  };
  d3_transitionPrototype.delay = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].delay;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node[ns][id].delay = +value.call(node, node.__data__, i, j);
    } : (value = +value, function(node) {
      node[ns][id].delay = value;
    }));
  };
  d3_transitionPrototype.duration = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].duration;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
    } : (value = Math.max(1, value), function(node) {
      node[ns][id].duration = value;
    }));
  };
  d3_transitionPrototype.each = function(type, listener) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 2) {
      var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
      try {
        d3_transitionInheritId = id;
        d3_selection_each(this, function(node, i, j) {
          d3_transitionInherit = node[ns][id];
          type.call(node, node.__data__, i, j);
        });
      } finally {
        d3_transitionInherit = inherit;
        d3_transitionInheritId = inheritId;
      }
    } else {
      d3_selection_each(this, function(node) {
        var transition = node[ns][id];
        (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
      });
    }
    return this;
  };
  d3_transitionPrototype.transition = function() {
    var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if (node = group[i]) {
          transition = node[ns][id0];
          d3_transitionNode(node, i, ns, id1, {
            time: transition.time,
            ease: transition.ease,
            delay: transition.delay + transition.duration,
            duration: transition.duration
          });
        }
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, ns, id1);
  };
  function d3_transitionNamespace(name) {
    return name == null ? "__transition__" : "__transition_" + name + "__";
  }
  function d3_transitionNode(node, i, ns, id, inherit) {
    var lock = node[ns] || (node[ns] = {
      active: 0,
      count: 0
    }), transition = lock[id];
    if (!transition) {
      var time = inherit.time;
      transition = lock[id] = {
        tween: new d3_Map(),
        time: time,
        delay: inherit.delay,
        duration: inherit.duration,
        ease: inherit.ease,
        index: i
      };
      inherit = null;
      ++lock.count;
      d3.timer(function(elapsed) {
        var delay = transition.delay, duration, ease, timer = d3_timer_active, tweened = [];
        timer.t = delay + time;
        if (delay <= elapsed) return start(elapsed - delay);
        timer.c = start;
        function start(elapsed) {
          if (lock.active > id) return stop();
          var active = lock[lock.active];
          if (active) {
            --lock.count;
            delete lock[lock.active];
            active.event && active.event.interrupt.call(node, node.__data__, active.index);
          }
          lock.active = id;
          transition.event && transition.event.start.call(node, node.__data__, i);
          transition.tween.forEach(function(key, value) {
            if (value = value.call(node, node.__data__, i)) {
              tweened.push(value);
            }
          });
          ease = transition.ease;
          duration = transition.duration;
          d3.timer(function() {
            timer.c = tick(elapsed || 1) ? d3_true : tick;
            return 1;
          }, 0, time);
        }
        function tick(elapsed) {
          if (lock.active !== id) return 1;
          var t = elapsed / duration, e = ease(t), n = tweened.length;
          while (n > 0) {
            tweened[--n].call(node, e);
          }
          if (t >= 1) {
            transition.event && transition.event.end.call(node, node.__data__, i);
            return stop();
          }
        }
        function stop() {
          if (--lock.count) delete lock[id]; else delete node[ns];
          return 1;
        }
      }, 0, time);
    }
  }
  d3.svg.axis = function() {
    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
    function axis(g) {
      g.each(function() {
        var g = d3.select(this);
        var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
        var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
        var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
        d3.transition(path));
        tickEnter.append("line");
        tickEnter.append("text");
        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
        if (orient === "bottom" || orient === "top") {
          tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
          text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
          pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
        } else {
          tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
          text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
          pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
        }
        lineEnter.attr(y2, sign * innerTickSize);
        textEnter.attr(y1, sign * tickSpacing);
        lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
        textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
        if (scale1.rangeBand) {
          var x = scale1, dx = x.rangeBand() / 2;
          scale0 = scale1 = function(d) {
            return x(d) + dx;
          };
        } else if (scale0.rangeBand) {
          scale0 = scale1;
        } else {
          tickExit.call(tickTransform, scale1, scale0);
        }
        tickEnter.call(tickTransform, scale0, scale1);
        tickUpdate.call(tickTransform, scale1, scale1);
      });
    }
    axis.scale = function(x) {
      if (!arguments.length) return scale;
      scale = x;
      return axis;
    };
    axis.orient = function(x) {
      if (!arguments.length) return orient;
      orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
      return axis;
    };
    axis.ticks = function() {
      if (!arguments.length) return tickArguments_;
      tickArguments_ = arguments;
      return axis;
    };
    axis.tickValues = function(x) {
      if (!arguments.length) return tickValues;
      tickValues = x;
      return axis;
    };
    axis.tickFormat = function(x) {
      if (!arguments.length) return tickFormat_;
      tickFormat_ = x;
      return axis;
    };
    axis.tickSize = function(x) {
      var n = arguments.length;
      if (!n) return innerTickSize;
      innerTickSize = +x;
      outerTickSize = +arguments[n - 1];
      return axis;
    };
    axis.innerTickSize = function(x) {
      if (!arguments.length) return innerTickSize;
      innerTickSize = +x;
      return axis;
    };
    axis.outerTickSize = function(x) {
      if (!arguments.length) return outerTickSize;
      outerTickSize = +x;
      return axis;
    };
    axis.tickPadding = function(x) {
      if (!arguments.length) return tickPadding;
      tickPadding = +x;
      return axis;
    };
    axis.tickSubdivide = function() {
      return arguments.length && axis;
    };
    return axis;
  };
  var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
    top: 1,
    right: 1,
    bottom: 1,
    left: 1
  };
  function d3_svg_axisX(selection, x0, x1) {
    selection.attr("transform", function(d) {
      var v0 = x0(d);
      return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
    });
  }
  function d3_svg_axisY(selection, y0, y1) {
    selection.attr("transform", function(d) {
      var v0 = y0(d);
      return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
    });
  }
  d3.svg.brush = function() {
    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
    function brush(g) {
      g.each(function() {
        var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
        var background = g.selectAll(".background").data([ 0 ]);
        background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
        g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
        var resize = g.selectAll(".resize").data(resizes, d3_identity);
        resize.exit().remove();
        resize.enter().append("g").attr("class", function(d) {
          return "resize " + d;
        }).style("cursor", function(d) {
          return d3_svg_brushCursor[d];
        }).append("rect").attr("x", function(d) {
          return /[ew]$/.test(d) ? -3 : null;
        }).attr("y", function(d) {
          return /^[ns]/.test(d) ? -3 : null;
        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
        resize.style("display", brush.empty() ? "none" : null);
        var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
        if (x) {
          range = d3_scaleRange(x);
          backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
          redrawX(gUpdate);
        }
        if (y) {
          range = d3_scaleRange(y);
          backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
          redrawY(gUpdate);
        }
        redraw(gUpdate);
      });
    }
    brush.event = function(g) {
      g.each(function() {
        var event_ = event.of(this, arguments), extent1 = {
          x: xExtent,
          y: yExtent,
          i: xExtentDomain,
          j: yExtentDomain
        }, extent0 = this.__chart__ || extent1;
        this.__chart__ = extent1;
        if (d3_transitionInheritId) {
          d3.select(this).transition().each("start.brush", function() {
            xExtentDomain = extent0.i;
            yExtentDomain = extent0.j;
            xExtent = extent0.x;
            yExtent = extent0.y;
            event_({
              type: "brushstart"
            });
          }).tween("brush:brush", function() {
            var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
            xExtentDomain = yExtentDomain = null;
            return function(t) {
              xExtent = extent1.x = xi(t);
              yExtent = extent1.y = yi(t);
              event_({
                type: "brush",
                mode: "resize"
              });
            };
          }).each("end.brush", function() {
            xExtentDomain = extent1.i;
            yExtentDomain = extent1.j;
            event_({
              type: "brush",
              mode: "resize"
            });
            event_({
              type: "brushend"
            });
          });
        } else {
          event_({
            type: "brushstart"
          });
          event_({
            type: "brush",
            mode: "resize"
          });
          event_({
            type: "brushend"
          });
        }
      });
    };
    function redraw(g) {
      g.selectAll(".resize").attr("transform", function(d) {
        return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
      });
    }
    function redrawX(g) {
      g.select(".extent").attr("x", xExtent[0]);
      g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
    }
    function redrawY(g) {
      g.select(".extent").attr("y", yExtent[0]);
      g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
    }
    function brushstart() {
      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
      var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
      if (d3.event.changedTouches) {
        w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
      } else {
        w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
      }
      g.interrupt().selectAll("*").interrupt();
      if (dragging) {
        origin[0] = xExtent[0] - origin[0];
        origin[1] = yExtent[0] - origin[1];
      } else if (resizing) {
        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
        offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
        origin[0] = xExtent[ex];
        origin[1] = yExtent[ey];
      } else if (d3.event.altKey) center = origin.slice();
      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
      d3.select("body").style("cursor", eventTarget.style("cursor"));
      event_({
        type: "brushstart"
      });
      brushmove();
      function keydown() {
        if (d3.event.keyCode == 32) {
          if (!dragging) {
            center = null;
            origin[0] -= xExtent[1];
            origin[1] -= yExtent[1];
            dragging = 2;
          }
          d3_eventPreventDefault();
        }
      }
      function keyup() {
        if (d3.event.keyCode == 32 && dragging == 2) {
          origin[0] += xExtent[1];
          origin[1] += yExtent[1];
          dragging = 0;
          d3_eventPreventDefault();
        }
      }
      function brushmove() {
        var point = d3.mouse(target), moved = false;
        if (offset) {
          point[0] += offset[0];
          point[1] += offset[1];
        }
        if (!dragging) {
          if (d3.event.altKey) {
            if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
            origin[0] = xExtent[+(point[0] < center[0])];
            origin[1] = yExtent[+(point[1] < center[1])];
          } else center = null;
        }
        if (resizingX && move1(point, x, 0)) {
          redrawX(g);
          moved = true;
        }
        if (resizingY && move1(point, y, 1)) {
          redrawY(g);
          moved = true;
        }
        if (moved) {
          redraw(g);
          event_({
            type: "brush",
            mode: dragging ? "move" : "resize"
          });
        }
      }
      function move1(point, scale, i) {
        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
        if (dragging) {
          r0 -= position;
          r1 -= size + position;
        }
        min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
        if (dragging) {
          max = (min += position) + size;
        } else {
          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
          if (position < min) {
            max = min;
            min = position;
          } else {
            max = position;
          }
        }
        if (extent[0] != min || extent[1] != max) {
          if (i) yExtentDomain = null; else xExtentDomain = null;
          extent[0] = min;
          extent[1] = max;
          return true;
        }
      }
      function brushend() {
        brushmove();
        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
        d3.select("body").style("cursor", null);
        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
        dragRestore();
        event_({
          type: "brushend"
        });
      }
    }
    brush.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.clamp = function(z) {
      if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
      if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
      return brush;
    };
    brush.extent = function(z) {
      var x0, x1, y0, y1, t;
      if (!arguments.length) {
        if (x) {
          if (xExtentDomain) {
            x0 = xExtentDomain[0], x1 = xExtentDomain[1];
          } else {
            x0 = xExtent[0], x1 = xExtent[1];
            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
            if (x1 < x0) t = x0, x0 = x1, x1 = t;
          }
        }
        if (y) {
          if (yExtentDomain) {
            y0 = yExtentDomain[0], y1 = yExtentDomain[1];
          } else {
            y0 = yExtent[0], y1 = yExtent[1];
            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
            if (y1 < y0) t = y0, y0 = y1, y1 = t;
          }
        }
        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
      }
      if (x) {
        x0 = z[0], x1 = z[1];
        if (y) x0 = x0[0], x1 = x1[0];
        xExtentDomain = [ x0, x1 ];
        if (x.invert) x0 = x(x0), x1 = x(x1);
        if (x1 < x0) t = x0, x0 = x1, x1 = t;
        if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
      }
      if (y) {
        y0 = z[0], y1 = z[1];
        if (x) y0 = y0[1], y1 = y1[1];
        yExtentDomain = [ y0, y1 ];
        if (y.invert) y0 = y(y0), y1 = y(y1);
        if (y1 < y0) t = y0, y0 = y1, y1 = t;
        if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
      }
      return brush;
    };
    brush.clear = function() {
      if (!brush.empty()) {
        xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
        xExtentDomain = yExtentDomain = null;
      }
      return brush;
    };
    brush.empty = function() {
      return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
    };
    return d3.rebind(brush, event, "on");
  };
  var d3_svg_brushCursor = {
    n: "ns-resize",
    e: "ew-resize",
    s: "ns-resize",
    w: "ew-resize",
    nw: "nwse-resize",
    ne: "nesw-resize",
    se: "nwse-resize",
    sw: "nesw-resize"
  };
  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
  var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
  var d3_time_formatUtc = d3_time_format.utc;
  var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
  d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
  function d3_time_formatIsoNative(date) {
    return date.toISOString();
  }
  d3_time_formatIsoNative.parse = function(string) {
    var date = new Date(string);
    return isNaN(date) ? null : date;
  };
  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
  d3_time.second = d3_time_interval(function(date) {
    return new d3_date(Math.floor(date / 1e3) * 1e3);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
  }, function(date) {
    return date.getSeconds();
  });
  d3_time.seconds = d3_time.second.range;
  d3_time.seconds.utc = d3_time.second.utc.range;
  d3_time.minute = d3_time_interval(function(date) {
    return new d3_date(Math.floor(date / 6e4) * 6e4);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
  }, function(date) {
    return date.getMinutes();
  });
  d3_time.minutes = d3_time.minute.range;
  d3_time.minutes.utc = d3_time.minute.utc.range;
  d3_time.hour = d3_time_interval(function(date) {
    var timezone = date.getTimezoneOffset() / 60;
    return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
  }, function(date) {
    return date.getHours();
  });
  d3_time.hours = d3_time.hour.range;
  d3_time.hours.utc = d3_time.hour.utc.range;
  d3_time.month = d3_time_interval(function(date) {
    date = d3_time.day(date);
    date.setDate(1);
    return date;
  }, function(date, offset) {
    date.setMonth(date.getMonth() + offset);
  }, function(date) {
    return date.getMonth();
  });
  d3_time.months = d3_time.month.range;
  d3_time.months.utc = d3_time.month.utc.range;
  function d3_time_scale(linear, methods, format) {
    function scale(x) {
      return linear(x);
    }
    scale.invert = function(x) {
      return d3_time_scaleDate(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
      linear.domain(x);
      return scale;
    };
    function tickMethod(extent, count) {
      var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
      return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
        return d / 31536e6;
      }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
    }
    scale.nice = function(interval, skip) {
      var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
      if (method) interval = method[0], skip = method[1];
      function skipped(date) {
        return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
      }
      return scale.domain(d3_scale_nice(domain, skip > 1 ? {
        floor: function(date) {
          while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
          return date;
        },
        ceil: function(date) {
          while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
          return date;
        }
      } : interval));
    };
    scale.ticks = function(interval, skip) {
      var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
        range: interval
      }, skip ];
      if (method) interval = method[0], skip = method[1];
      return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
    };
    scale.tickFormat = function() {
      return format;
    };
    scale.copy = function() {
      return d3_time_scale(linear.copy(), methods, format);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_time_scaleDate(t) {
    return new Date(t);
  }
  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
  var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
  var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
    return d.getMilliseconds();
  } ], [ ":%S", function(d) {
    return d.getSeconds();
  } ], [ "%I:%M", function(d) {
    return d.getMinutes();
  } ], [ "%I %p", function(d) {
    return d.getHours();
  } ], [ "%a %d", function(d) {
    return d.getDay() && d.getDate() != 1;
  } ], [ "%b %d", function(d) {
    return d.getDate() != 1;
  } ], [ "%B", function(d) {
    return d.getMonth();
  } ], [ "%Y", d3_true ] ]);
  var d3_time_scaleMilliseconds = {
    range: function(start, stop, step) {
      return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
    },
    floor: d3_identity,
    ceil: d3_identity
  };
  d3_time_scaleLocalMethods.year = d3_time.year;
  d3_time.scale = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
  };
  var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
    return [ m[0].utc, m[1] ];
  });
  var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
    return d.getUTCMilliseconds();
  } ], [ ":%S", function(d) {
    return d.getUTCSeconds();
  } ], [ "%I:%M", function(d) {
    return d.getUTCMinutes();
  } ], [ "%I %p", function(d) {
    return d.getUTCHours();
  } ], [ "%a %d", function(d) {
    return d.getUTCDay() && d.getUTCDate() != 1;
  } ], [ "%b %d", function(d) {
    return d.getUTCDate() != 1;
  } ], [ "%B", function(d) {
    return d.getUTCMonth();
  } ], [ "%Y", d3_true ] ]);
  d3_time_scaleUtcMethods.year = d3_time.year.utc;
  d3_time.scale.utc = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
  };
  d3.text = d3_xhrType(function(request) {
    return request.responseText;
  });
  d3.json = function(url, callback) {
    return d3_xhr(url, "application/json", d3_json, callback);
  };
  function d3_json(request) {
    return JSON.parse(request.responseText);
  }
  d3.html = function(url, callback) {
    return d3_xhr(url, "text/html", d3_html, callback);
  };
  function d3_html(request) {
    var range = d3_document.createRange();
    range.selectNode(d3_document.body);
    return range.createContextualFragment(request.responseText);
  }
  d3.xml = d3_xhrType(function(request) {
    return request.responseXML;
  });
  if (typeof define === "function" && define.amd) define(d3); else if (typeof module === "object" && module.exports) module.exports = d3;
  this.d3 = d3;
}();

index.html

<meta charset="utf-8">


<script id="fragmentShader" type="x-shader/x-fragment">
  uniform vec2 u_resolution;
  uniform float u_time;

  void main() {
    vec2 st = gl_FragCoord.xy/u_resolution.xy;
    gl_FragColor=vec4(st.x,st.y,0.0,1.0);
  }
</script>



<body>
  <style>body{margin: 0px;}</style>
  <div id="container"></div>
  <script src="three.js"></script>
  <script src="d3.js"></script>
  <script id="vertexShader" type="x-shader/x-vertex">
    void main() {
      gl_Position = vec4( position, 1.0 );
    }
  </script>
  <script>
    var container;
    var camera, scene, renderer;
    var uniforms;


    d3.xhr('12.glsl', function(res){
      fragShader = res.response
      init()
      animate()
    })


    function init() {
      container = document.getElementById( 'container' );

      camera = new THREE.Camera();
      camera.position.z = 1;

      scene = new THREE.Scene();

      var geometry = new THREE.PlaneBufferGeometry(2, 2);

      uniforms = {
        u_time: { type: "f", value: 1.0 },
        u_resolution: { type: "v2", value: new THREE.Vector2() },
        u_mouse: { type: "v2", value: new THREE.Vector2() }
      };

      var material = new THREE.ShaderMaterial( {
        uniforms: uniforms,
        vertexShader: document.getElementById( 'vertexShader' ).textContent,
        fragmentShader: fragShader
      } );

      var mesh = new THREE.Mesh( geometry, material );
      scene.add( mesh );

      renderer = new THREE.WebGLRenderer();
      renderer.setPixelRatio( window.devicePixelRatio );

      container.appendChild( renderer.domElement );

      onWindowResize();
      window.addEventListener( 'resize', onWindowResize, false );

      document.onmousemove = function(e){
        uniforms.u_mouse.value.x = e.pageX
        uniforms.u_mouse.value.y = e.pageY
      }

    }

    function onWindowResize( event ) {
      renderer.setSize( window.innerWidth, window.innerHeight );
      uniforms.u_resolution.value.x = renderer.domElement.width;
      uniforms.u_resolution.value.y = renderer.domElement.height;
    }



    function animate() {
      requestAnimationFrame( animate );
      render();
    }

    function render() {
      uniforms.u_time.value += 0.05;
      renderer.render( scene, camera );
    }
  </script>
</body>

preview.png

three.js

// File:src/Three.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

var THREE = { REVISION: '74' };

//

if ( typeof define === 'function' && define.amd ) {

	define( 'three', THREE );

} else if ( 'undefined' !== typeof exports && 'undefined' !== typeof module ) {

	module.exports = THREE;

}

//

if ( Number.EPSILON === undefined ) {

	Number.EPSILON = Math.pow( 2, - 52 );

}

//

if ( Math.sign === undefined ) {

	// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/sign

	Math.sign = function ( x ) {

		return ( x < 0 ) ? - 1 : ( x > 0 ) ? 1 : + x;

	};

}

if ( Function.prototype.name === undefined && Object.defineProperty !== undefined ) {

	// Missing in IE9-11.
	// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name

	Object.defineProperty( Function.prototype, 'name', {

		get: function () {

			return this.toString().match( /^\s*function\s*(\S*)\s*\(/ )[ 1 ];

		}

	} );

}

if ( Object.assign === undefined ) {

	// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign

	Object.defineProperty( Object, 'assign', {

		writable: true,
		configurable: true,

		value: function ( target ) {

			'use strict';

			if ( target === undefined || target === null ) {

				throw new TypeError( "Cannot convert first argument to object" );

			}

			var to = Object( target );

			for ( var i = 1, n = arguments.length; i !== n; ++ i ) {

				var nextSource = arguments[ i ];

				if ( nextSource === undefined || nextSource === null ) continue;

				nextSource = Object( nextSource );

				var keysArray = Object.keys( nextSource );

				for ( var nextIndex = 0, len = keysArray.length; nextIndex !== len; ++ nextIndex ) {

					var nextKey = keysArray[ nextIndex ];
					var desc = Object.getOwnPropertyDescriptor( nextSource, nextKey );

					if ( desc !== undefined && desc.enumerable ) {

						to[ nextKey ] = nextSource[ nextKey ];

					}

				}

			}

			return to;

		}

	} );

}

// https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent.button

THREE.MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2 };

// GL STATE CONSTANTS

THREE.CullFaceNone = 0;
THREE.CullFaceBack = 1;
THREE.CullFaceFront = 2;
THREE.CullFaceFrontBack = 3;

THREE.FrontFaceDirectionCW = 0;
THREE.FrontFaceDirectionCCW = 1;

// SHADOWING TYPES

THREE.BasicShadowMap = 0;
THREE.PCFShadowMap = 1;
THREE.PCFSoftShadowMap = 2;

// MATERIAL CONSTANTS

// side

THREE.FrontSide = 0;
THREE.BackSide = 1;
THREE.DoubleSide = 2;

// shading

THREE.FlatShading = 1;
THREE.SmoothShading = 2;

// colors

THREE.NoColors = 0;
THREE.FaceColors = 1;
THREE.VertexColors = 2;

// blending modes

THREE.NoBlending = 0;
THREE.NormalBlending = 1;
THREE.AdditiveBlending = 2;
THREE.SubtractiveBlending = 3;
THREE.MultiplyBlending = 4;
THREE.CustomBlending = 5;

// custom blending equations
// (numbers start from 100 not to clash with other
// mappings to OpenGL constants defined in Texture.js)

THREE.AddEquation = 100;
THREE.SubtractEquation = 101;
THREE.ReverseSubtractEquation = 102;
THREE.MinEquation = 103;
THREE.MaxEquation = 104;

// custom blending destination factors

THREE.ZeroFactor = 200;
THREE.OneFactor = 201;
THREE.SrcColorFactor = 202;
THREE.OneMinusSrcColorFactor = 203;
THREE.SrcAlphaFactor = 204;
THREE.OneMinusSrcAlphaFactor = 205;
THREE.DstAlphaFactor = 206;
THREE.OneMinusDstAlphaFactor = 207;

// custom blending source factors

//THREE.ZeroFactor = 200;
//THREE.OneFactor = 201;
//THREE.SrcAlphaFactor = 204;
//THREE.OneMinusSrcAlphaFactor = 205;
//THREE.DstAlphaFactor = 206;
//THREE.OneMinusDstAlphaFactor = 207;
THREE.DstColorFactor = 208;
THREE.OneMinusDstColorFactor = 209;
THREE.SrcAlphaSaturateFactor = 210;

// depth modes

THREE.NeverDepth = 0;
THREE.AlwaysDepth = 1;
THREE.LessDepth = 2;
THREE.LessEqualDepth = 3;
THREE.EqualDepth = 4;
THREE.GreaterEqualDepth = 5;
THREE.GreaterDepth = 6;
THREE.NotEqualDepth = 7;


// TEXTURE CONSTANTS

THREE.MultiplyOperation = 0;
THREE.MixOperation = 1;
THREE.AddOperation = 2;

// Mapping modes

THREE.UVMapping = 300;

THREE.CubeReflectionMapping = 301;
THREE.CubeRefractionMapping = 302;

THREE.EquirectangularReflectionMapping = 303;
THREE.EquirectangularRefractionMapping = 304;

THREE.SphericalReflectionMapping = 305;

// Wrapping modes

THREE.RepeatWrapping = 1000;
THREE.ClampToEdgeWrapping = 1001;
THREE.MirroredRepeatWrapping = 1002;

// Filters

THREE.NearestFilter = 1003;
THREE.NearestMipMapNearestFilter = 1004;
THREE.NearestMipMapLinearFilter = 1005;
THREE.LinearFilter = 1006;
THREE.LinearMipMapNearestFilter = 1007;
THREE.LinearMipMapLinearFilter = 1008;

// Data types

THREE.UnsignedByteType = 1009;
THREE.ByteType = 1010;
THREE.ShortType = 1011;
THREE.UnsignedShortType = 1012;
THREE.IntType = 1013;
THREE.UnsignedIntType = 1014;
THREE.FloatType = 1015;
THREE.HalfFloatType = 1025;

// Pixel types

//THREE.UnsignedByteType = 1009;
THREE.UnsignedShort4444Type = 1016;
THREE.UnsignedShort5551Type = 1017;
THREE.UnsignedShort565Type = 1018;

// Pixel formats

THREE.AlphaFormat = 1019;
THREE.RGBFormat = 1020;
THREE.RGBAFormat = 1021;
THREE.LuminanceFormat = 1022;
THREE.LuminanceAlphaFormat = 1023;
// THREE.RGBEFormat handled as THREE.RGBAFormat in shaders
THREE.RGBEFormat = THREE.RGBAFormat; //1024;

// DDS / ST3C Compressed texture formats

THREE.RGB_S3TC_DXT1_Format = 2001;
THREE.RGBA_S3TC_DXT1_Format = 2002;
THREE.RGBA_S3TC_DXT3_Format = 2003;
THREE.RGBA_S3TC_DXT5_Format = 2004;


// PVRTC compressed texture formats

THREE.RGB_PVRTC_4BPPV1_Format = 2100;
THREE.RGB_PVRTC_2BPPV1_Format = 2101;
THREE.RGBA_PVRTC_4BPPV1_Format = 2102;
THREE.RGBA_PVRTC_2BPPV1_Format = 2103;

// ETC compressed texture formats

THREE.RGB_ETC1_Format = 2151;

// Loop styles for AnimationAction

THREE.LoopOnce = 2200;
THREE.LoopRepeat = 2201;
THREE.LoopPingPong = 2202;

// Interpolation

THREE.InterpolateDiscrete = 2300;
THREE.InterpolateLinear = 2301;
THREE.InterpolateSmooth = 2302;

// Interpolant ending modes

THREE.ZeroCurvatureEnding = 2400;
THREE.ZeroSlopeEnding = 2401;
THREE.WrapAroundEnding = 2402;

// Triangle Draw modes

THREE.TrianglesDrawMode = 0;
THREE.TriangleStripDrawMode = 1;
THREE.TriangleFanDrawMode = 2;

// File:src/math/Color.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Color = function ( color ) {

	if ( arguments.length === 3 ) {

		return this.fromArray( arguments );

	}

	return this.set( color );

};

THREE.Color.prototype = {

	constructor: THREE.Color,

	r: 1, g: 1, b: 1,

	set: function ( value ) {

		if ( value instanceof THREE.Color ) {

			this.copy( value );

		} else if ( typeof value === 'number' ) {

			this.setHex( value );

		} else if ( typeof value === 'string' ) {

			this.setStyle( value );

		}

		return this;

	},

	setScalar: function ( scalar ) {

		this.r = scalar;
		this.g = scalar;
		this.b = scalar;

	},

	setHex: function ( hex ) {

		hex = Math.floor( hex );

		this.r = ( hex >> 16 & 255 ) / 255;
		this.g = ( hex >> 8 & 255 ) / 255;
		this.b = ( hex & 255 ) / 255;

		return this;

	},

	setRGB: function ( r, g, b ) {

		this.r = r;
		this.g = g;
		this.b = b;

		return this;

	},

	setHSL: function () {

		function hue2rgb( p, q, t ) {

			if ( t < 0 ) t += 1;
			if ( t > 1 ) t -= 1;
			if ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;
			if ( t < 1 / 2 ) return q;
			if ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );
			return p;

		}

		return function ( h, s, l ) {

			// h,s,l ranges are in 0.0 - 1.0
			h = THREE.Math.euclideanModulo( h, 1 );
			s = THREE.Math.clamp( s, 0, 1 );
			l = THREE.Math.clamp( l, 0, 1 );

			if ( s === 0 ) {

				this.r = this.g = this.b = l;

			} else {

				var p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );
				var q = ( 2 * l ) - p;

				this.r = hue2rgb( q, p, h + 1 / 3 );
				this.g = hue2rgb( q, p, h );
				this.b = hue2rgb( q, p, h - 1 / 3 );

			}

			return this;

		};

	}(),

	setStyle: function ( style ) {

		function handleAlpha( string ) {

			if ( string === undefined ) return;

			if ( parseFloat( string ) < 1 ) {

				console.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );

			}

		}


		var m;

		if ( m = /^((?:rgb|hsl)a?)\(\s*([^\)]*)\)/.exec( style ) ) {

			// rgb / hsl

			var color;
			var name = m[ 1 ];
			var components = m[ 2 ];

			switch ( name ) {

				case 'rgb':
				case 'rgba':

					if ( color = /^(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {

						// rgb(255,0,0) rgba(255,0,0,0.5)
						this.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;
						this.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;
						this.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;

						handleAlpha( color[ 5 ] );

						return this;

					}

					if ( color = /^(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {

						// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)
						this.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;
						this.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;
						this.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;

						handleAlpha( color[ 5 ] );

						return this;

					}

					break;

				case 'hsl':
				case 'hsla':

					if ( color = /^([0-9]*\.?[0-9]+)\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {

						// hsl(120,50%,50%) hsla(120,50%,50%,0.5)
						var h = parseFloat( color[ 1 ] ) / 360;
						var s = parseInt( color[ 2 ], 10 ) / 100;
						var l = parseInt( color[ 3 ], 10 ) / 100;

						handleAlpha( color[ 5 ] );

						return this.setHSL( h, s, l );

					}

					break;

			}

		} else if ( m = /^\#([A-Fa-f0-9]+)$/.exec( style ) ) {

			// hex color

			var hex = m[ 1 ];
			var size = hex.length;

			if ( size === 3 ) {

				// #ff0
				this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 0 ), 16 ) / 255;
				this.g = parseInt( hex.charAt( 1 ) + hex.charAt( 1 ), 16 ) / 255;
				this.b = parseInt( hex.charAt( 2 ) + hex.charAt( 2 ), 16 ) / 255;

				return this;

			} else if ( size === 6 ) {

				// #ff0000
				this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 1 ), 16 ) / 255;
				this.g = parseInt( hex.charAt( 2 ) + hex.charAt( 3 ), 16 ) / 255;
				this.b = parseInt( hex.charAt( 4 ) + hex.charAt( 5 ), 16 ) / 255;

				return this;

			}

		}

		if ( style && style.length > 0 ) {

			// color keywords
			var hex = THREE.ColorKeywords[ style ];

			if ( hex !== undefined ) {

				// red
				this.setHex( hex );

			} else {

				// unknown color
				console.warn( 'THREE.Color: Unknown color ' + style );

			}

		}

		return this;

	},

	clone: function () {

		return new this.constructor( this.r, this.g, this.b );

	},

	copy: function ( color ) {

		this.r = color.r;
		this.g = color.g;
		this.b = color.b;

		return this;

	},

	copyGammaToLinear: function ( color, gammaFactor ) {

		if ( gammaFactor === undefined ) gammaFactor = 2.0;

		this.r = Math.pow( color.r, gammaFactor );
		this.g = Math.pow( color.g, gammaFactor );
		this.b = Math.pow( color.b, gammaFactor );

		return this;

	},

	copyLinearToGamma: function ( color, gammaFactor ) {

		if ( gammaFactor === undefined ) gammaFactor = 2.0;

		var safeInverse = ( gammaFactor > 0 ) ? ( 1.0 / gammaFactor ) : 1.0;

		this.r = Math.pow( color.r, safeInverse );
		this.g = Math.pow( color.g, safeInverse );
		this.b = Math.pow( color.b, safeInverse );

		return this;

	},

	convertGammaToLinear: function () {

		var r = this.r, g = this.g, b = this.b;

		this.r = r * r;
		this.g = g * g;
		this.b = b * b;

		return this;

	},

	convertLinearToGamma: function () {

		this.r = Math.sqrt( this.r );
		this.g = Math.sqrt( this.g );
		this.b = Math.sqrt( this.b );

		return this;

	},

	getHex: function () {

		return ( this.r * 255 ) << 16 ^ ( this.g * 255 ) << 8 ^ ( this.b * 255 ) << 0;

	},

	getHexString: function () {

		return ( '000000' + this.getHex().toString( 16 ) ).slice( - 6 );

	},

	getHSL: function ( optionalTarget ) {

		// h,s,l ranges are in 0.0 - 1.0

		var hsl = optionalTarget || { h: 0, s: 0, l: 0 };

		var r = this.r, g = this.g, b = this.b;

		var max = Math.max( r, g, b );
		var min = Math.min( r, g, b );

		var hue, saturation;
		var lightness = ( min + max ) / 2.0;

		if ( min === max ) {

			hue = 0;
			saturation = 0;

		} else {

			var delta = max - min;

			saturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );

			switch ( max ) {

				case r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;
				case g: hue = ( b - r ) / delta + 2; break;
				case b: hue = ( r - g ) / delta + 4; break;

			}

			hue /= 6;

		}

		hsl.h = hue;
		hsl.s = saturation;
		hsl.l = lightness;

		return hsl;

	},

	getStyle: function () {

		return 'rgb(' + ( ( this.r * 255 ) | 0 ) + ',' + ( ( this.g * 255 ) | 0 ) + ',' + ( ( this.b * 255 ) | 0 ) + ')';

	},

	offsetHSL: function ( h, s, l ) {

		var hsl = this.getHSL();

		hsl.h += h; hsl.s += s; hsl.l += l;

		this.setHSL( hsl.h, hsl.s, hsl.l );

		return this;

	},

	add: function ( color ) {

		this.r += color.r;
		this.g += color.g;
		this.b += color.b;

		return this;

	},

	addColors: function ( color1, color2 ) {

		this.r = color1.r + color2.r;
		this.g = color1.g + color2.g;
		this.b = color1.b + color2.b;

		return this;

	},

	addScalar: function ( s ) {

		this.r += s;
		this.g += s;
		this.b += s;

		return this;

	},

	multiply: function ( color ) {

		this.r *= color.r;
		this.g *= color.g;
		this.b *= color.b;

		return this;

	},

	multiplyScalar: function ( s ) {

		this.r *= s;
		this.g *= s;
		this.b *= s;

		return this;

	},

	lerp: function ( color, alpha ) {

		this.r += ( color.r - this.r ) * alpha;
		this.g += ( color.g - this.g ) * alpha;
		this.b += ( color.b - this.b ) * alpha;

		return this;

	},

	equals: function ( c ) {

		return ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );

	},

	fromArray: function ( array, offset ) {

		if ( offset === undefined ) offset = 0;

		this.r = array[ offset ];
		this.g = array[ offset + 1 ];
		this.b = array[ offset + 2 ];

		return this;

	},

	toArray: function ( array, offset ) {

		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;

		array[ offset ] = this.r;
		array[ offset + 1 ] = this.g;
		array[ offset + 2 ] = this.b;

		return array;

	}

};

THREE.ColorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,
'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,
'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,
'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,
'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,
'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,
'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,
'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,
'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,
'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,
'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,
'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,
'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,
'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,
'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,
'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,
'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,
'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,
'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,
'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,
'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,
'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,
'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,
'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };

// File:src/math/Quaternion.js

/**
 * @author mikael emtinger / http://gomo.se/
 * @author alteredq / http://alteredqualia.com/
 * @author WestLangley / http://github.com/WestLangley
 * @author bhouston / http://clara.io
 */

THREE.Quaternion = function ( x, y, z, w ) {

	this._x = x || 0;
	this._y = y || 0;
	this._z = z || 0;
	this._w = ( w !== undefined ) ? w : 1;

};

THREE.Quaternion.prototype = {

	constructor: THREE.Quaternion,

	get x () {

		return this._x;

	},

	set x ( value ) {

		this._x = value;
		this.onChangeCallback();

	},

	get y () {

		return this._y;

	},

	set y ( value ) {

		this._y = value;
		this.onChangeCallback();

	},

	get z () {

		return this._z;

	},

	set z ( value ) {

		this._z = value;
		this.onChangeCallback();

	},

	get w () {

		return this._w;

	},

	set w ( value ) {

		this._w = value;
		this.onChangeCallback();

	},

	set: function ( x, y, z, w ) {

		this._x = x;
		this._y = y;
		this._z = z;
		this._w = w;

		this.onChangeCallback();

		return this;

	},

	clone: function () {

		return new this.constructor( this._x, this._y, this._z, this._w );

	},

	copy: function ( quaternion ) {

		this._x = quaternion.x;
		this._y = quaternion.y;
		this._z = quaternion.z;
		this._w = quaternion.w;

		this.onChangeCallback();

		return this;

	},

	setFromEuler: function ( euler, update ) {

		if ( euler instanceof THREE.Euler === false ) {

			throw new Error( 'THREE.Quaternion: .setFromEuler() now expects a Euler rotation rather than a Vector3 and order.' );

		}

		// http://www.mathworks.com/matlabcentral/fileexchange/
		// 	20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/
		//	content/SpinCalc.m

		var c1 = Math.cos( euler._x / 2 );
		var c2 = Math.cos( euler._y / 2 );
		var c3 = Math.cos( euler._z / 2 );
		var s1 = Math.sin( euler._x / 2 );
		var s2 = Math.sin( euler._y / 2 );
		var s3 = Math.sin( euler._z / 2 );

		var order = euler.order;

		if ( order === 'XYZ' ) {

			this._x = s1 * c2 * c3 + c1 * s2 * s3;
			this._y = c1 * s2 * c3 - s1 * c2 * s3;
			this._z = c1 * c2 * s3 + s1 * s2 * c3;
			this._w = c1 * c2 * c3 - s1 * s2 * s3;

		} else if ( order === 'YXZ' ) {

			this._x = s1 * c2 * c3 + c1 * s2 * s3;
			this._y = c1 * s2 * c3 - s1 * c2 * s3;
			this._z = c1 * c2 * s3 - s1 * s2 * c3;
			this._w = c1 * c2 * c3 + s1 * s2 * s3;

		} else if ( order === 'ZXY' ) {

			this._x = s1 * c2 * c3 - c1 * s2 * s3;
			this._y = c1 * s2 * c3 + s1 * c2 * s3;
			this._z = c1 * c2 * s3 + s1 * s2 * c3;
			this._w = c1 * c2 * c3 - s1 * s2 * s3;

		} else if ( order === 'ZYX' ) {

			this._x = s1 * c2 * c3 - c1 * s2 * s3;
			this._y = c1 * s2 * c3 + s1 * c2 * s3;
			this._z = c1 * c2 * s3 - s1 * s2 * c3;
			this._w = c1 * c2 * c3 + s1 * s2 * s3;

		} else if ( order === 'YZX' ) {

			this._x = s1 * c2 * c3 + c1 * s2 * s3;
			this._y = c1 * s2 * c3 + s1 * c2 * s3;
			this._z = c1 * c2 * s3 - s1 * s2 * c3;
			this._w = c1 * c2 * c3 - s1 * s2 * s3;

		} else if ( order === 'XZY' ) {

			this._x = s1 * c2 * c3 - c1 * s2 * s3;
			this._y = c1 * s2 * c3 - s1 * c2 * s3;
			this._z = c1 * c2 * s3 + s1 * s2 * c3;
			this._w = c1 * c2 * c3 + s1 * s2 * s3;

		}

		if ( update !== false ) this.onChangeCallback();

		return this;

	},

	setFromAxisAngle: function ( axis, angle ) {

		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm

		// assumes axis is normalized

		var halfAngle = angle / 2, s = Math.sin( halfAngle );

		this._x = axis.x * s;
		this._y = axis.y * s;
		this._z = axis.z * s;
		this._w = Math.cos( halfAngle );

		this.onChangeCallback();

		return this;

	},

	setFromRotationMatrix: function ( m ) {

		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm

		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

		var te = m.elements,

			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],

			trace = m11 + m22 + m33,
			s;

		if ( trace > 0 ) {

			s = 0.5 / Math.sqrt( trace + 1.0 );

			this._w = 0.25 / s;
			this._x = ( m32 - m23 ) * s;
			this._y = ( m13 - m31 ) * s;
			this._z = ( m21 - m12 ) * s;

		} else if ( m11 > m22 && m11 > m33 ) {

			s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );

			this._w = ( m32 - m23 ) / s;
			this._x = 0.25 * s;
			this._y = ( m12 + m21 ) / s;
			this._z = ( m13 + m31 ) / s;

		} else if ( m22 > m33 ) {

			s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );

			this._w = ( m13 - m31 ) / s;
			this._x = ( m12 + m21 ) / s;
			this._y = 0.25 * s;
			this._z = ( m23 + m32 ) / s;

		} else {

			s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );

			this._w = ( m21 - m12 ) / s;
			this._x = ( m13 + m31 ) / s;
			this._y = ( m23 + m32 ) / s;
			this._z = 0.25 * s;

		}

		this.onChangeCallback();

		return this;

	},

	setFromUnitVectors: function () {

		// http://lolengine.net/blog/2014/02/24/quaternion-from-two-vectors-final

		// assumes direction vectors vFrom and vTo are normalized

		var v1, r;

		var EPS = 0.000001;

		return function ( vFrom, vTo ) {

			if ( v1 === undefined ) v1 = new THREE.Vector3();

			r = vFrom.dot( vTo ) + 1;

			if ( r < EPS ) {

				r = 0;

				if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {

					v1.set( - vFrom.y, vFrom.x, 0 );

				} else {

					v1.set( 0, - vFrom.z, vFrom.y );

				}

			} else {

				v1.crossVectors( vFrom, vTo );

			}

			this._x = v1.x;
			this._y = v1.y;
			this._z = v1.z;
			this._w = r;

			this.normalize();

			return this;

		};

	}(),

	inverse: function () {

		this.conjugate().normalize();

		return this;

	},

	conjugate: function () {

		this._x *= - 1;
		this._y *= - 1;
		this._z *= - 1;

		this.onChangeCallback();

		return this;

	},

	dot: function ( v ) {

		return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;

	},

	lengthSq: function () {

		return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;

	},

	length: function () {

		return Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );

	},

	normalize: function () {

		var l = this.length();

		if ( l === 0 ) {

			this._x = 0;
			this._y = 0;
			this._z = 0;
			this._w = 1;

		} else {

			l = 1 / l;

			this._x = this._x * l;
			this._y = this._y * l;
			this._z = this._z * l;
			this._w = this._w * l;

		}

		this.onChangeCallback();

		return this;

	},

	multiply: function ( q, p ) {

		if ( p !== undefined ) {

			console.warn( 'THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.' );
			return this.multiplyQuaternions( q, p );

		}

		return this.multiplyQuaternions( this, q );

	},

	multiplyQuaternions: function ( a, b ) {

		// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm

		var qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
		var qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;

		this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
		this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
		this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
		this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;

		this.onChangeCallback();

		return this;

	},

	slerp: function ( qb, t ) {

		if ( t === 0 ) return this;
		if ( t === 1 ) return this.copy( qb );

		var x = this._x, y = this._y, z = this._z, w = this._w;

		// http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/

		var cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;

		if ( cosHalfTheta < 0 ) {

			this._w = - qb._w;
			this._x = - qb._x;
			this._y = - qb._y;
			this._z = - qb._z;

			cosHalfTheta = - cosHalfTheta;

		} else {

			this.copy( qb );

		}

		if ( cosHalfTheta >= 1.0 ) {

			this._w = w;
			this._x = x;
			this._y = y;
			this._z = z;

			return this;

		}

		var sinHalfTheta = Math.sqrt( 1.0 - cosHalfTheta * cosHalfTheta );

		if ( Math.abs( sinHalfTheta ) < 0.001 ) {

			this._w = 0.5 * ( w + this._w );
			this._x = 0.5 * ( x + this._x );
			this._y = 0.5 * ( y + this._y );
			this._z = 0.5 * ( z + this._z );

			return this;

		}

		var halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );
		var ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
		ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;

		this._w = ( w * ratioA + this._w * ratioB );
		this._x = ( x * ratioA + this._x * ratioB );
		this._y = ( y * ratioA + this._y * ratioB );
		this._z = ( z * ratioA + this._z * ratioB );

		this.onChangeCallback();

		return this;

	},

	equals: function ( quaternion ) {

		return ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );

	},

	fromArray: function ( array, offset ) {

		if ( offset === undefined ) offset = 0;

		this._x = array[ offset ];
		this._y = array[ offset + 1 ];
		this._z = array[ offset + 2 ];
		this._w = array[ offset + 3 ];

		this.onChangeCallback();

		return this;

	},

	toArray: function ( array, offset ) {

		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;

		array[ offset ] = this._x;
		array[ offset + 1 ] = this._y;
		array[ offset + 2 ] = this._z;
		array[ offset + 3 ] = this._w;

		return array;

	},

	onChange: function ( callback ) {

		this.onChangeCallback = callback;

		return this;

	},

	onChangeCallback: function () {}

};

Object.assign( THREE.Quaternion, {

	slerp: function( qa, qb, qm, t ) {

		return qm.copy( qa ).slerp( qb, t );

	},

	slerpFlat: function(
			dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {

		// fuzz-free, array-based Quaternion SLERP operation

		var x0 = src0[ srcOffset0 + 0 ],
			y0 = src0[ srcOffset0 + 1 ],
			z0 = src0[ srcOffset0 + 2 ],
			w0 = src0[ srcOffset0 + 3 ],

			x1 = src1[ srcOffset1 + 0 ],
			y1 = src1[ srcOffset1 + 1 ],
			z1 = src1[ srcOffset1 + 2 ],
			w1 = src1[ srcOffset1 + 3 ];

		if ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {

			var s = 1 - t,

				cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,

				dir = ( cos >= 0 ? 1 : - 1 ),
				sqrSin = 1 - cos * cos;

			// Skip the Slerp for tiny steps to avoid numeric problems:
			if ( sqrSin > Number.EPSILON ) {

				var sin = Math.sqrt( sqrSin ),
					len = Math.atan2( sin, cos * dir );

				s = Math.sin( s * len ) / sin;
				t = Math.sin( t * len ) / sin;

			}

			var tDir = t * dir;

			x0 = x0 * s + x1 * tDir;
			y0 = y0 * s + y1 * tDir;
			z0 = z0 * s + z1 * tDir;
			w0 = w0 * s + w1 * tDir;

			// Normalize in case we just did a lerp:
			if ( s === 1 - t ) {

				var f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );

				x0 *= f;
				y0 *= f;
				z0 *= f;
				w0 *= f;

			}

		}

		dst[ dstOffset ] = x0;
		dst[ dstOffset + 1 ] = y0;
		dst[ dstOffset + 2 ] = z0;
		dst[ dstOffset + 3 ] = w0;

	}

} );

// File:src/math/Vector2.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author philogb / http://blog.thejit.org/
 * @author egraether / http://egraether.com/
 * @author zz85 / http://www.lab4games.net/zz85/blog
 */

THREE.Vector2 = function ( x, y ) {

	this.x = x || 0;
	this.y = y || 0;

};

THREE.Vector2.prototype = {

	constructor: THREE.Vector2,

	get width() {

		return this.x;

	},

	set width( value ) {

		this.x = value;

	},

	get height() {

		return this.y;

	},

	set height( value ) {

		this.y = value;

	},

	//

	set: function ( x, y ) {

		this.x = x;
		this.y = y;

		return this;

	},

	setScalar: function ( scalar ) {

		this.x = scalar;
		this.y = scalar;

		return this;

	},

	setX: function ( x ) {

		this.x = x;

		return this;

	},

	setY: function ( y ) {

		this.y = y;

		return this;

	},

	setComponent: function ( index, value ) {

		switch ( index ) {

			case 0: this.x = value; break;
			case 1: this.y = value; break;
			default: throw new Error( 'index is out of range: ' + index );

		}

	},

	getComponent: function ( index ) {

		switch ( index ) {

			case 0: return this.x;
			case 1: return this.y;
			default: throw new Error( 'index is out of range: ' + index );

		}

	},

	clone: function () {

		return new this.constructor( this.x, this.y );

	},

	copy: function ( v ) {

		this.x = v.x;
		this.y = v.y;

		return this;

	},

	add: function ( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
			return this.addVectors( v, w );

		}

		this.x += v.x;
		this.y += v.y;

		return this;

	},

	addScalar: function ( s ) {

		this.x += s;
		this.y += s;

		return this;

	},

	addVectors: function ( a, b ) {

		this.x = a.x + b.x;
		this.y = a.y + b.y;

		return this;

	},

	addScaledVector: function ( v, s ) {

		this.x += v.x * s;
		this.y += v.y * s;

		return this;

	},

	sub: function ( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
			return this.subVectors( v, w );

		}

		this.x -= v.x;
		this.y -= v.y;

		return this;

	},

	subScalar: function ( s ) {

		this.x -= s;
		this.y -= s;

		return this;

	},

	subVectors: function ( a, b ) {

		this.x = a.x - b.x;
		this.y = a.y - b.y;

		return this;

	},

	multiply: function ( v ) {

		this.x *= v.x;
		this.y *= v.y;

		return this;

	},

	multiplyScalar: function ( scalar ) {

		if ( isFinite( scalar ) ) {

			this.x *= scalar;
			this.y *= scalar;

		} else {

			this.x = 0;
			this.y = 0;

		}

		return this;

	},

	divide: function ( v ) {

		this.x /= v.x;
		this.y /= v.y;

		return this;

	},

	divideScalar: function ( scalar ) {

		return this.multiplyScalar( 1 / scalar );

	},

	min: function ( v ) {

		this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );

		return this;

	},

	max: function ( v ) {

		this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );

		return this;

	},

	clamp: function ( min, max ) {

		// This function assumes min < max, if this assumption isn't true it will not operate correctly

		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );

		return this;

	},

	clampScalar: function () {

		var min, max;

		return function clampScalar( minVal, maxVal ) {

			if ( min === undefined ) {

				min = new THREE.Vector2();
				max = new THREE.Vector2();

			}

			min.set( minVal, minVal );
			max.set( maxVal, maxVal );

			return this.clamp( min, max );

		};

	}(),

	clampLength: function ( min, max ) {

		var length = this.length();

		this.multiplyScalar( Math.max( min, Math.min( max, length ) ) / length );

		return this;

	},

	floor: function () {

		this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );

		return this;

	},

	ceil: function () {

		this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );

		return this;

	},

	round: function () {

		this.x = Math.round( this.x );
		this.y = Math.round( this.y );

		return this;

	},

	roundToZero: function () {

		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );

		return this;

	},

	negate: function () {

		this.x = - this.x;
		this.y = - this.y;

		return this;

	},

	dot: function ( v ) {

		return this.x * v.x + this.y * v.y;

	},

	lengthSq: function () {

		return this.x * this.x + this.y * this.y;

	},

	length: function () {

		return Math.sqrt( this.x * this.x + this.y * this.y );

	},

	lengthManhattan: function() {

		return Math.abs( this.x ) + Math.abs( this.y );

	},

	normalize: function () {

		return this.divideScalar( this.length() );

	},

	angle: function () {

		// computes the angle in radians with respect to the positive x-axis

		var angle = Math.atan2( this.y, this.x );

		if ( angle < 0 ) angle += 2 * Math.PI;

		return angle;

	},

	distanceTo: function ( v ) {

		return Math.sqrt( this.distanceToSquared( v ) );

	},

	distanceToSquared: function ( v ) {

		var dx = this.x - v.x, dy = this.y - v.y;
		return dx * dx + dy * dy;

	},

	setLength: function ( length ) {

		return this.multiplyScalar( length / this.length() );

	},

	lerp: function ( v, alpha ) {

		this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;

		return this;

	},

	lerpVectors: function ( v1, v2, alpha ) {

		this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 );

		return this;

	},

	equals: function ( v ) {

		return ( ( v.x === this.x ) && ( v.y === this.y ) );

	},

	fromArray: function ( array, offset ) {

		if ( offset === undefined ) offset = 0;

		this.x = array[ offset ];
		this.y = array[ offset + 1 ];

		return this;

	},

	toArray: function ( array, offset ) {

		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;

		array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;

		return array;

	},

	fromAttribute: function ( attribute, index, offset ) {

		if ( offset === undefined ) offset = 0;

		index = index * attribute.itemSize + offset;

		this.x = attribute.array[ index ];
		this.y = attribute.array[ index + 1 ];

		return this;

	},

	rotateAround: function ( center, angle ) {

		var c = Math.cos( angle ), s = Math.sin( angle );

		var x = this.x - center.x;
		var y = this.y - center.y;

		this.x = x * c - y * s + center.x;
		this.y = x * s + y * c + center.y;

		return this;

	}

};

// File:src/math/Vector3.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author *kile / http://kile.stravaganza.org/
 * @author philogb / http://blog.thejit.org/
 * @author mikael emtinger / http://gomo.se/
 * @author egraether / http://egraether.com/
 * @author WestLangley / http://github.com/WestLangley
 */

THREE.Vector3 = function ( x, y, z ) {

	this.x = x || 0;
	this.y = y || 0;
	this.z = z || 0;

};

THREE.Vector3.prototype = {

	constructor: THREE.Vector3,

	set: function ( x, y, z ) {

		this.x = x;
		this.y = y;
		this.z = z;

		return this;

	},

	setScalar: function ( scalar ) {

		this.x = scalar;
		this.y = scalar;
		this.z = scalar;

		return this;

	},

	setX: function ( x ) {

		this.x = x;

		return this;

	},

	setY: function ( y ) {

		this.y = y;

		return this;

	},

	setZ: function ( z ) {

		this.z = z;

		return this;

	},

	setComponent: function ( index, value ) {

		switch ( index ) {

			case 0: this.x = value; break;
			case 1: this.y = value; break;
			case 2: this.z = value; break;
			default: throw new Error( 'index is out of range: ' + index );

		}

	},

	getComponent: function ( index ) {

		switch ( index ) {

			case 0: return this.x;
			case 1: return this.y;
			case 2: return this.z;
			default: throw new Error( 'index is out of range: ' + index );

		}

	},

	clone: function () {

		return new this.constructor( this.x, this.y, this.z );

	},

	copy: function ( v ) {

		this.x = v.x;
		this.y = v.y;
		this.z = v.z;

		return this;

	},

	add: function ( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
			return this.addVectors( v, w );

		}

		this.x += v.x;
		this.y += v.y;
		this.z += v.z;

		return this;

	},

	addScalar: function ( s ) {

		this.x += s;
		this.y += s;
		this.z += s;

		return this;

	},

	addVectors: function ( a, b ) {

		this.x = a.x + b.x;
		this.y = a.y + b.y;
		this.z = a.z + b.z;

		return this;

	},

	addScaledVector: function ( v, s ) {

		this.x += v.x * s;
		this.y += v.y * s;
		this.z += v.z * s;

		return this;

	},

	sub: function ( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
			return this.subVectors( v, w );

		}

		this.x -= v.x;
		this.y -= v.y;
		this.z -= v.z;

		return this;

	},

	subScalar: function ( s ) {

		this.x -= s;
		this.y -= s;
		this.z -= s;

		return this;

	},

	subVectors: function ( a, b ) {

		this.x = a.x - b.x;
		this.y = a.y - b.y;
		this.z = a.z - b.z;

		return this;

	},

	multiply: function ( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.' );
			return this.multiplyVectors( v, w );

		}

		this.x *= v.x;
		this.y *= v.y;
		this.z *= v.z;

		return this;

	},

	multiplyScalar: function ( scalar ) {

		if ( isFinite( scalar ) ) {

			this.x *= scalar;
			this.y *= scalar;
			this.z *= scalar;

		} else {

			this.x = 0;
			this.y = 0;
			this.z = 0;

		}

		return this;

	},

	multiplyVectors: function ( a, b ) {

		this.x = a.x * b.x;
		this.y = a.y * b.y;
		this.z = a.z * b.z;

		return this;

	},

	applyEuler: function () {

		var quaternion;

		return function applyEuler( euler ) {

			if ( euler instanceof THREE.Euler === false ) {

				console.error( 'THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.' );

			}

			if ( quaternion === undefined ) quaternion = new THREE.Quaternion();

			this.applyQuaternion( quaternion.setFromEuler( euler ) );

			return this;

		};

	}(),

	applyAxisAngle: function () {

		var quaternion;

		return function applyAxisAngle( axis, angle ) {

			if ( quaternion === undefined ) quaternion = new THREE.Quaternion();

			this.applyQuaternion( quaternion.setFromAxisAngle( axis, angle ) );

			return this;

		};

	}(),

	applyMatrix3: function ( m ) {

		var x = this.x;
		var y = this.y;
		var z = this.z;

		var e = m.elements;

		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;
		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;
		this.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;

		return this;

	},

	applyMatrix4: function ( m ) {

		// input: THREE.Matrix4 affine matrix

		var x = this.x, y = this.y, z = this.z;

		var e = m.elements;

		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ]  * z + e[ 12 ];
		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ]  * z + e[ 13 ];
		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ];

		return this;

	},

	applyProjection: function ( m ) {

		// input: THREE.Matrix4 projection matrix

		var x = this.x, y = this.y, z = this.z;

		var e = m.elements;
		var d = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] ); // perspective divide

		this.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ]  * z + e[ 12 ] ) * d;
		this.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ]  * z + e[ 13 ] ) * d;
		this.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * d;

		return this;

	},

	applyQuaternion: function ( q ) {

		var x = this.x;
		var y = this.y;
		var z = this.z;

		var qx = q.x;
		var qy = q.y;
		var qz = q.z;
		var qw = q.w;

		// calculate quat * vector

		var ix =  qw * x + qy * z - qz * y;
		var iy =  qw * y + qz * x - qx * z;
		var iz =  qw * z + qx * y - qy * x;
		var iw = - qx * x - qy * y - qz * z;

		// calculate result * inverse quat

		this.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;
		this.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;
		this.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;

		return this;

	},

	project: function () {

		var matrix;

		return function project( camera ) {

			if ( matrix === undefined ) matrix = new THREE.Matrix4();

			matrix.multiplyMatrices( camera.projectionMatrix, matrix.getInverse( camera.matrixWorld ) );
			return this.applyProjection( matrix );

		};

	}(),

	unproject: function () {

		var matrix;

		return function unproject( camera ) {

			if ( matrix === undefined ) matrix = new THREE.Matrix4();

			matrix.multiplyMatrices( camera.matrixWorld, matrix.getInverse( camera.projectionMatrix ) );
			return this.applyProjection( matrix );

		};

	}(),

	transformDirection: function ( m ) {

		// input: THREE.Matrix4 affine matrix
		// vector interpreted as a direction

		var x = this.x, y = this.y, z = this.z;

		var e = m.elements;

		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ]  * z;
		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ]  * z;
		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;

		this.normalize();

		return this;

	},

	divide: function ( v ) {

		this.x /= v.x;
		this.y /= v.y;
		this.z /= v.z;

		return this;

	},

	divideScalar: function ( scalar ) {

		return this.multiplyScalar( 1 / scalar );

	},

	min: function ( v ) {

		this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );
		this.z = Math.min( this.z, v.z );

		return this;

	},

	max: function ( v ) {

		this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );
		this.z = Math.max( this.z, v.z );

		return this;

	},

	clamp: function ( min, max ) {

		// This function assumes min < max, if this assumption isn't true it will not operate correctly

		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
		this.z = Math.max( min.z, Math.min( max.z, this.z ) );

		return this;

	},

	clampScalar: function () {

		var min, max;

		return function clampScalar( minVal, maxVal ) {

			if ( min === undefined ) {

				min = new THREE.Vector3();
				max = new THREE.Vector3();

			}

			min.set( minVal, minVal, minVal );
			max.set( maxVal, maxVal, maxVal );

			return this.clamp( min, max );

		};

	}(),

	clampLength: function ( min, max ) {

		var length = this.length();

		this.multiplyScalar( Math.max( min, Math.min( max, length ) ) / length );

		return this;

	},

	floor: function () {

		this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );
		this.z = Math.floor( this.z );

		return this;

	},

	ceil: function () {

		this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );
		this.z = Math.ceil( this.z );

		return this;

	},

	round: function () {

		this.x = Math.round( this.x );
		this.y = Math.round( this.y );
		this.z = Math.round( this.z );

		return this;

	},

	roundToZero: function () {

		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );

		return this;

	},

	negate: function () {

		this.x = - this.x;
		this.y = - this.y;
		this.z = - this.z;

		return this;

	},

	dot: function ( v ) {

		return this.x * v.x + this.y * v.y + this.z * v.z;

	},

	lengthSq: function () {

		return this.x * this.x + this.y * this.y + this.z * this.z;

	},

	length: function () {

		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );

	},

	lengthManhattan: function () {

		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );

	},

	normalize: function () {

		return this.divideScalar( this.length() );

	},

	setLength: function ( length ) {

		return this.multiplyScalar( length / this.length() );

	},

	lerp: function ( v, alpha ) {

		this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;
		this.z += ( v.z - this.z ) * alpha;

		return this;

	},

	lerpVectors: function ( v1, v2, alpha ) {

		this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 );

		return this;

	},

	cross: function ( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.' );
			return this.crossVectors( v, w );

		}

		var x = this.x, y = this.y, z = this.z;

		this.x = y * v.z - z * v.y;
		this.y = z * v.x - x * v.z;
		this.z = x * v.y - y * v.x;

		return this;

	},

	crossVectors: function ( a, b ) {

		var ax = a.x, ay = a.y, az = a.z;
		var bx = b.x, by = b.y, bz = b.z;

		this.x = ay * bz - az * by;
		this.y = az * bx - ax * bz;
		this.z = ax * by - ay * bx;

		return this;

	},

	projectOnVector: function () {

		var v1, dot;

		return function projectOnVector( vector ) {

			if ( v1 === undefined ) v1 = new THREE.Vector3();

			v1.copy( vector ).normalize();

			dot = this.dot( v1 );

			return this.copy( v1 ).multiplyScalar( dot );

		};

	}(),

	projectOnPlane: function () {

		var v1;

		return function projectOnPlane( planeNormal ) {

			if ( v1 === undefined ) v1 = new THREE.Vector3();

			v1.copy( this ).projectOnVector( planeNormal );

			return this.sub( v1 );

		}

	}(),

	reflect: function () {

		// reflect incident vector off plane orthogonal to normal
		// normal is assumed to have unit length

		var v1;

		return function reflect( normal ) {

			if ( v1 === undefined ) v1 = new THREE.Vector3();

			return this.sub( v1.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );

		}

	}(),

	angleTo: function ( v ) {

		var theta = this.dot( v ) / ( Math.sqrt( this.lengthSq() * v.lengthSq() ) );

		// clamp, to handle numerical problems

		return Math.acos( THREE.Math.clamp( theta, - 1, 1 ) );

	},

	distanceTo: function ( v ) {

		return Math.sqrt( this.distanceToSquared( v ) );

	},

	distanceToSquared: function ( v ) {

		var dx = this.x - v.x;
		var dy = this.y - v.y;
		var dz = this.z - v.z;

		return dx * dx + dy * dy + dz * dz;

	},

	setFromMatrixPosition: function ( m ) {

		this.x = m.elements[ 12 ];
		this.y = m.elements[ 13 ];
		this.z = m.elements[ 14 ];

		return this;

	},

	setFromMatrixScale: function ( m ) {

		var sx = this.set( m.elements[ 0 ], m.elements[ 1 ], m.elements[ 2 ] ).length();
		var sy = this.set( m.elements[ 4 ], m.elements[ 5 ], m.elements[ 6 ] ).length();
		var sz = this.set( m.elements[ 8 ], m.elements[ 9 ], m.elements[ 10 ] ).length();

		this.x = sx;
		this.y = sy;
		this.z = sz;

		return this;

	},

	setFromMatrixColumn: function ( index, matrix ) {

		var offset = index * 4;

		var me = matrix.elements;

		this.x = me[ offset ];
		this.y = me[ offset + 1 ];
		this.z = me[ offset + 2 ];

		return this;

	},

	equals: function ( v ) {

		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );

	},

	fromArray: function ( array, offset ) {

		if ( offset === undefined ) offset = 0;

		this.x = array[ offset ];
		this.y = array[ offset + 1 ];
		this.z = array[ offset + 2 ];

		return this;

	},

	toArray: function ( array, offset ) {

		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;

		array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;
		array[ offset + 2 ] = this.z;

		return array;

	},

	fromAttribute: function ( attribute, index, offset ) {

		if ( offset === undefined ) offset = 0;

		index = index * attribute.itemSize + offset;

		this.x = attribute.array[ index ];
		this.y = attribute.array[ index + 1 ];
		this.z = attribute.array[ index + 2 ];

		return this;

	}

};

// File:src/math/Vector4.js

/**
 * @author supereggbert / http://www.paulbrunt.co.uk/
 * @author philogb / http://blog.thejit.org/
 * @author mikael emtinger / http://gomo.se/
 * @author egraether / http://egraether.com/
 * @author WestLangley / http://github.com/WestLangley
 */

THREE.Vector4 = function ( x, y, z, w ) {

	this.x = x || 0;
	this.y = y || 0;
	this.z = z || 0;
	this.w = ( w !== undefined ) ? w : 1;

};

THREE.Vector4.prototype = {

	constructor: THREE.Vector4,

	set: function ( x, y, z, w ) {

		this.x = x;
		this.y = y;
		this.z = z;
		this.w = w;

		return this;

	},

	setScalar: function ( scalar ) {

		this.x = scalar;
		this.y = scalar;
		this.z = scalar;
		this.w = scalar;

		return this;

	},

	setX: function ( x ) {

		this.x = x;

		return this;

	},

	setY: function ( y ) {

		this.y = y;

		return this;

	},

	setZ: function ( z ) {

		this.z = z;

		return this;

	},

	setW: function ( w ) {

		this.w = w;

		return this;

	},

	setComponent: function ( index, value ) {

		switch ( index ) {

			case 0: this.x = value; break;
			case 1: this.y = value; break;
			case 2: this.z = value; break;
			case 3: this.w = value; break;
			default: throw new Error( 'index is out of range: ' + index );

		}

	},

	getComponent: function ( index ) {

		switch ( index ) {

			case 0: return this.x;
			case 1: return this.y;
			case 2: return this.z;
			case 3: return this.w;
			default: throw new Error( 'index is out of range: ' + index );

		}

	},

	clone: function () {

		return new this.constructor( this.x, this.y, this.z, this.w );

	},

	copy: function ( v ) {

		this.x = v.x;
		this.y = v.y;
		this.z = v.z;
		this.w = ( v.w !== undefined ) ? v.w : 1;

		return this;

	},

	add: function ( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
			return this.addVectors( v, w );

		}

		this.x += v.x;
		this.y += v.y;
		this.z += v.z;
		this.w += v.w;

		return this;

	},

	addScalar: function ( s ) {

		this.x += s;
		this.y += s;
		this.z += s;
		this.w += s;

		return this;

	},

	addVectors: function ( a, b ) {

		this.x = a.x + b.x;
		this.y = a.y + b.y;
		this.z = a.z + b.z;
		this.w = a.w + b.w;

		return this;

	},

	addScaledVector: function ( v, s ) {

		this.x += v.x * s;
		this.y += v.y * s;
		this.z += v.z * s;
		this.w += v.w * s;

		return this;

	},

	sub: function ( v, w ) {

		if ( w !== undefined ) {

			console.warn( 'THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
			return this.subVectors( v, w );

		}

		this.x -= v.x;
		this.y -= v.y;
		this.z -= v.z;
		this.w -= v.w;

		return this;

	},

	subScalar: function ( s ) {

		this.x -= s;
		this.y -= s;
		this.z -= s;
		this.w -= s;

		return this;

	},

	subVectors: function ( a, b ) {

		this.x = a.x - b.x;
		this.y = a.y - b.y;
		this.z = a.z - b.z;
		this.w = a.w - b.w;

		return this;

	},

	multiplyScalar: function ( scalar ) {

		if ( isFinite( scalar ) ) {

			this.x *= scalar;
			this.y *= scalar;
			this.z *= scalar;
			this.w *= scalar;

		} else {

			this.x = 0;
			this.y = 0;
			this.z = 0;
			this.w = 0;

		}

		return this;

	},

	applyMatrix4: function ( m ) {

		var x = this.x;
		var y = this.y;
		var z = this.z;
		var w = this.w;

		var e = m.elements;

		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;
		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;
		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;
		this.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;

		return this;

	},

	divideScalar: function ( scalar ) {

		return this.multiplyScalar( 1 / scalar );

	},

	setAxisAngleFromQuaternion: function ( q ) {

		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm

		// q is assumed to be normalized

		this.w = 2 * Math.acos( q.w );

		var s = Math.sqrt( 1 - q.w * q.w );

		if ( s < 0.0001 ) {

			 this.x = 1;
			 this.y = 0;
			 this.z = 0;

		} else {

			 this.x = q.x / s;
			 this.y = q.y / s;
			 this.z = q.z / s;

		}

		return this;

	},

	setAxisAngleFromRotationMatrix: function ( m ) {

		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm

		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

		var angle, x, y, z,		// variables for result
			epsilon = 0.01,		// margin to allow for rounding errors
			epsilon2 = 0.1,		// margin to distinguish between 0 and 180 degrees

			te = m.elements,

			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];

		if ( ( Math.abs( m12 - m21 ) < epsilon )
		   && ( Math.abs( m13 - m31 ) < epsilon )
		   && ( Math.abs( m23 - m32 ) < epsilon ) ) {

			// singularity found
			// first check for identity matrix which must have +1 for all terms
			// in leading diagonal and zero in other terms

			if ( ( Math.abs( m12 + m21 ) < epsilon2 )
			   && ( Math.abs( m13 + m31 ) < epsilon2 )
			   && ( Math.abs( m23 + m32 ) < epsilon2 )
			   && ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {

				// this singularity is identity matrix so angle = 0

				this.set( 1, 0, 0, 0 );

				return this; // zero angle, arbitrary axis

			}

			// otherwise this singularity is angle = 180

			angle = Math.PI;

			var xx = ( m11 + 1 ) / 2;
			var yy = ( m22 + 1 ) / 2;
			var zz = ( m33 + 1 ) / 2;
			var xy = ( m12 + m21 ) / 4;
			var xz = ( m13 + m31 ) / 4;
			var yz = ( m23 + m32 ) / 4;

			if ( ( xx > yy ) && ( xx > zz ) ) {

				// m11 is the largest diagonal term

				if ( xx < epsilon ) {

					x = 0;
					y = 0.707106781;
					z = 0.707106781;

				} else {

					x = Math.sqrt( xx );
					y = xy / x;
					z = xz / x;

				}

			} else if ( yy > zz ) {

				// m22 is the largest diagonal term

				if ( yy < epsilon ) {

					x = 0.707106781;
					y = 0;
					z = 0.707106781;

				} else {

					y = Math.sqrt( yy );
					x = xy / y;
					z = yz / y;

				}

			} else {

				// m33 is the largest diagonal term so base result on this

				if ( zz < epsilon ) {

					x = 0.707106781;
					y = 0.707106781;
					z = 0;

				} else {

					z = Math.sqrt( zz );
					x = xz / z;
					y = yz / z;

				}

			}

			this.set( x, y, z, angle );

			return this; // return 180 deg rotation

		}

		// as we have reached here there are no singularities so we can handle normally

		var s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 )
						  + ( m13 - m31 ) * ( m13 - m31 )
						  + ( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize

		if ( Math.abs( s ) < 0.001 ) s = 1;

		// prevent divide by zero, should not happen if matrix is orthogonal and should be
		// caught by singularity test above, but I've left it in just in case

		this.x = ( m32 - m23 ) / s;
		this.y = ( m13 - m31 ) / s;
		this.z = ( m21 - m12 ) / s;
		this.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );

		return this;

	},

	min: function ( v ) {

		this.x = Math.min( this.x, v.x );
		this.y = Math.min( this.y, v.y );
		this.z = Math.min( this.z, v.z );
		this.w = Math.min( this.w, v.w );

		return this;

	},

	max: function ( v ) {

		this.x = Math.max( this.x, v.x );
		this.y = Math.max( this.y, v.y );
		this.z = Math.max( this.z, v.z );
		this.w = Math.max( this.w, v.w );

		return this;

	},

	clamp: function ( min, max ) {

		// This function assumes min < max, if this assumption isn't true it will not operate correctly

		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
		this.w = Math.max( min.w, Math.min( max.w, this.w ) );

		return this;

	},

	clampScalar: function () {

		var min, max;

		return function clampScalar( minVal, maxVal ) {

			if ( min === undefined ) {

				min = new THREE.Vector4();
				max = new THREE.Vector4();

			}

			min.set( minVal, minVal, minVal, minVal );
			max.set( maxVal, maxVal, maxVal, maxVal );

			return this.clamp( min, max );

		};

	}(),

	floor: function () {

		this.x = Math.floor( this.x );
		this.y = Math.floor( this.y );
		this.z = Math.floor( this.z );
		this.w = Math.floor( this.w );

		return this;

	},

	ceil: function () {

		this.x = Math.ceil( this.x );
		this.y = Math.ceil( this.y );
		this.z = Math.ceil( this.z );
		this.w = Math.ceil( this.w );

		return this;

	},

	round: function () {

		this.x = Math.round( this.x );
		this.y = Math.round( this.y );
		this.z = Math.round( this.z );
		this.w = Math.round( this.w );

		return this;

	},

	roundToZero: function () {

		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
		this.w = ( this.w < 0 ) ? Math.ceil( this.w ) : Math.floor( this.w );

		return this;

	},

	negate: function () {

		this.x = - this.x;
		this.y = - this.y;
		this.z = - this.z;
		this.w = - this.w;

		return this;

	},

	dot: function ( v ) {

		return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;

	},

	lengthSq: function () {

		return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;

	},

	length: function () {

		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );

	},

	lengthManhattan: function () {

		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );

	},

	normalize: function () {

		return this.divideScalar( this.length() );

	},

	setLength: function ( length ) {

		return this.multiplyScalar( length / this.length() );

	},

	lerp: function ( v, alpha ) {

		this.x += ( v.x - this.x ) * alpha;
		this.y += ( v.y - this.y ) * alpha;
		this.z += ( v.z - this.z ) * alpha;
		this.w += ( v.w - this.w ) * alpha;

		return this;

	},

	lerpVectors: function ( v1, v2, alpha ) {

		this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 );

		return this;

	},

	equals: function ( v ) {

		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );

	},

	fromArray: function ( array, offset ) {

		if ( offset === undefined ) offset = 0;

		this.x = array[ offset ];
		this.y = array[ offset + 1 ];
		this.z = array[ offset + 2 ];
		this.w = array[ offset + 3 ];

		return this;

	},

	toArray: function ( array, offset ) {

		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;

		array[ offset ] = this.x;
		array[ offset + 1 ] = this.y;
		array[ offset + 2 ] = this.z;
		array[ offset + 3 ] = this.w;

		return array;

	},

	fromAttribute: function ( attribute, index, offset ) {

		if ( offset === undefined ) offset = 0;

		index = index * attribute.itemSize + offset;

		this.x = attribute.array[ index ];
		this.y = attribute.array[ index + 1 ];
		this.z = attribute.array[ index + 2 ];
		this.w = attribute.array[ index + 3 ];

		return this;

	}

};

// File:src/math/Euler.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author WestLangley / http://github.com/WestLangley
 * @author bhouston / http://clara.io
 */

THREE.Euler = function ( x, y, z, order ) {

	this._x = x || 0;
	this._y = y || 0;
	this._z = z || 0;
	this._order = order || THREE.Euler.DefaultOrder;

};

THREE.Euler.RotationOrders = [ 'XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX' ];

THREE.Euler.DefaultOrder = 'XYZ';

THREE.Euler.prototype = {

	constructor: THREE.Euler,

	get x () {

		return this._x;

	},

	set x ( value ) {

		this._x = value;
		this.onChangeCallback();

	},

	get y () {

		return this._y;

	},

	set y ( value ) {

		this._y = value;
		this.onChangeCallback();

	},

	get z () {

		return this._z;

	},

	set z ( value ) {

		this._z = value;
		this.onChangeCallback();

	},

	get order () {

		return this._order;

	},

	set order ( value ) {

		this._order = value;
		this.onChangeCallback();

	},

	set: function ( x, y, z, order ) {

		this._x = x;
		this._y = y;
		this._z = z;
		this._order = order || this._order;

		this.onChangeCallback();

		return this;

	},

	clone: function () {

		return new this.constructor( this._x, this._y, this._z, this._order );

	},

	copy: function ( euler ) {

		this._x = euler._x;
		this._y = euler._y;
		this._z = euler._z;
		this._order = euler._order;

		this.onChangeCallback();

		return this;

	},

	setFromRotationMatrix: function ( m, order, update ) {

		var clamp = THREE.Math.clamp;

		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

		var te = m.elements;
		var m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];
		var m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];
		var m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];

		order = order || this._order;

		if ( order === 'XYZ' ) {

			this._y = Math.asin( clamp( m13, - 1, 1 ) );

			if ( Math.abs( m13 ) < 0.99999 ) {

				this._x = Math.atan2( - m23, m33 );
				this._z = Math.atan2( - m12, m11 );

			} else {

				this._x = Math.atan2( m32, m22 );
				this._z = 0;

			}

		} else if ( order === 'YXZ' ) {

			this._x = Math.asin( - clamp( m23, - 1, 1 ) );

			if ( Math.abs( m23 ) < 0.99999 ) {

				this._y = Math.atan2( m13, m33 );
				this._z = Math.atan2( m21, m22 );

			} else {

				this._y = Math.atan2( - m31, m11 );
				this._z = 0;

			}

		} else if ( order === 'ZXY' ) {

			this._x = Math.asin( clamp( m32, - 1, 1 ) );

			if ( Math.abs( m32 ) < 0.99999 ) {

				this._y = Math.atan2( - m31, m33 );
				this._z = Math.atan2( - m12, m22 );

			} else {

				this._y = 0;
				this._z = Math.atan2( m21, m11 );

			}

		} else if ( order === 'ZYX' ) {

			this._y = Math.asin( - clamp( m31, - 1, 1 ) );

			if ( Math.abs( m31 ) < 0.99999 ) {

				this._x = Math.atan2( m32, m33 );
				this._z = Math.atan2( m21, m11 );

			} else {

				this._x = 0;
				this._z = Math.atan2( - m12, m22 );

			}

		} else if ( order === 'YZX' ) {

			this._z = Math.asin( clamp( m21, - 1, 1 ) );

			if ( Math.abs( m21 ) < 0.99999 ) {

				this._x = Math.atan2( - m23, m22 );
				this._y = Math.atan2( - m31, m11 );

			} else {

				this._x = 0;
				this._y = Math.atan2( m13, m33 );

			}

		} else if ( order === 'XZY' ) {

			this._z = Math.asin( - clamp( m12, - 1, 1 ) );

			if ( Math.abs( m12 ) < 0.99999 ) {

				this._x = Math.atan2( m32, m22 );
				this._y = Math.atan2( m13, m11 );

			} else {

				this._x = Math.atan2( - m23, m33 );
				this._y = 0;

			}

		} else {

			console.warn( 'THREE.Euler: .setFromRotationMatrix() given unsupported order: ' + order )

		}

		this._order = order;

		if ( update !== false ) this.onChangeCallback();

		return this;

	},

	setFromQuaternion: function () {

		var matrix;

		return function ( q, order, update ) {

			if ( matrix === undefined ) matrix = new THREE.Matrix4();
			matrix.makeRotationFromQuaternion( q );
			this.setFromRotationMatrix( matrix, order, update );

			return this;

		};

	}(),

	setFromVector3: function ( v, order ) {

		return this.set( v.x, v.y, v.z, order || this._order );

	},

	reorder: function () {

		// WARNING: this discards revolution information -bhouston

		var q = new THREE.Quaternion();

		return function ( newOrder ) {

			q.setFromEuler( this );
			this.setFromQuaternion( q, newOrder );

		};

	}(),

	equals: function ( euler ) {

		return ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );

	},

	fromArray: function ( array ) {

		this._x = array[ 0 ];
		this._y = array[ 1 ];
		this._z = array[ 2 ];
		if ( array[ 3 ] !== undefined ) this._order = array[ 3 ];

		this.onChangeCallback();

		return this;

	},

	toArray: function ( array, offset ) {

		if ( array === undefined ) array = [];
		if ( offset === undefined ) offset = 0;

		array[ offset ] = this._x;
		array[ offset + 1 ] = this._y;
		array[ offset + 2 ] = this._z;
		array[ offset + 3 ] = this._order;

		return array;

	},

	toVector3: function ( optionalResult ) {

		if ( optionalResult ) {

			return optionalResult.set( this._x, this._y, this._z );

		} else {

			return new THREE.Vector3( this._x, this._y, this._z );

		}

	},

	onChange: function ( callback ) {

		this.onChangeCallback = callback;

		return this;

	},

	onChangeCallback: function () {}

};

// File:src/math/Line3.js

/**
 * @author bhouston / http://clara.io
 */

THREE.Line3 = function ( start, end ) {

	this.start = ( start !== undefined ) ? start : new THREE.Vector3();
	this.end = ( end !== undefined ) ? end : new THREE.Vector3();

};

THREE.Line3.prototype = {

	constructor: THREE.Line3,

	set: function ( start, end ) {

		this.start.copy( start );
		this.end.copy( end );

		return this;

	},

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( line ) {

		this.start.copy( line.start );
		this.end.copy( line.end );

		return this;

	},

	center: function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();
		return result.addVectors( this.start, this.end ).multiplyScalar( 0.5 );

	},

	delta: function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();
		return result.subVectors( this.end, this.start );

	},

	distanceSq: function () {

		return this.start.distanceToSquared( this.end );

	},

	distance: function () {

		return this.start.distanceTo( this.end );

	},

	at: function ( t, optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();

		return this.delta( result ).multiplyScalar( t ).add( this.start );

	},

	closestPointToPointParameter: function () {

		var startP = new THREE.Vector3();
		var startEnd = new THREE.Vector3();

		return function ( point, clampToLine ) {

			startP.subVectors( point, this.start );
			startEnd.subVectors( this.end, this.start );

			var startEnd2 = startEnd.dot( startEnd );
			var startEnd_startP = startEnd.dot( startP );

			var t = startEnd_startP / startEnd2;

			if ( clampToLine ) {

				t = THREE.Math.clamp( t, 0, 1 );

			}

			return t;

		};

	}(),

	closestPointToPoint: function ( point, clampToLine, optionalTarget ) {

		var t = this.closestPointToPointParameter( point, clampToLine );

		var result = optionalTarget || new THREE.Vector3();

		return this.delta( result ).multiplyScalar( t ).add( this.start );

	},

	applyMatrix4: function ( matrix ) {

		this.start.applyMatrix4( matrix );
		this.end.applyMatrix4( matrix );

		return this;

	},

	equals: function ( line ) {

		return line.start.equals( this.start ) && line.end.equals( this.end );

	}

};

// File:src/math/Box2.js

/**
 * @author bhouston / http://clara.io
 */

THREE.Box2 = function ( min, max ) {

	this.min = ( min !== undefined ) ? min : new THREE.Vector2( + Infinity, + Infinity );
	this.max = ( max !== undefined ) ? max : new THREE.Vector2( - Infinity, - Infinity );

};

THREE.Box2.prototype = {

	constructor: THREE.Box2,

	set: function ( min, max ) {

		this.min.copy( min );
		this.max.copy( max );

		return this;

	},

	setFromPoints: function ( points ) {

		this.makeEmpty();

		for ( var i = 0, il = points.length; i < il; i ++ ) {

			this.expandByPoint( points[ i ] );

		}

		return this;

	},

	setFromCenterAndSize: function () {

		var v1 = new THREE.Vector2();

		return function ( center, size ) {

			var halfSize = v1.copy( size ).multiplyScalar( 0.5 );
			this.min.copy( center ).sub( halfSize );
			this.max.copy( center ).add( halfSize );

			return this;

		};

	}(),

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( box ) {

		this.min.copy( box.min );
		this.max.copy( box.max );

		return this;

	},

	makeEmpty: function () {

		this.min.x = this.min.y = + Infinity;
		this.max.x = this.max.y = - Infinity;

		return this;

	},

	isEmpty: function () {

		// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes

		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );

	},

	center: function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Vector2();
		return result.addVectors( this.min, this.max ).multiplyScalar( 0.5 );

	},

	size: function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Vector2();
		return result.subVectors( this.max, this.min );

	},

	expandByPoint: function ( point ) {

		this.min.min( point );
		this.max.max( point );

		return this;

	},

	expandByVector: function ( vector ) {

		this.min.sub( vector );
		this.max.add( vector );

		return this;

	},

	expandByScalar: function ( scalar ) {

		this.min.addScalar( - scalar );
		this.max.addScalar( scalar );

		return this;

	},

	containsPoint: function ( point ) {

		if ( point.x < this.min.x || point.x > this.max.x ||
		     point.y < this.min.y || point.y > this.max.y ) {

			return false;

		}

		return true;

	},

	containsBox: function ( box ) {

		if ( ( this.min.x <= box.min.x ) && ( box.max.x <= this.max.x ) &&
		     ( this.min.y <= box.min.y ) && ( box.max.y <= this.max.y ) ) {

			return true;

		}

		return false;

	},

	getParameter: function ( point, optionalTarget ) {

		// This can potentially have a divide by zero if the box
		// has a size dimension of 0.

		var result = optionalTarget || new THREE.Vector2();

		return result.set(
			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
			( point.y - this.min.y ) / ( this.max.y - this.min.y )
		);

	},

	intersectsBox: function ( box ) {

		// using 6 splitting planes to rule out intersections.

		if ( box.max.x < this.min.x || box.min.x > this.max.x ||
		     box.max.y < this.min.y || box.min.y > this.max.y ) {

			return false;

		}

		return true;

	},

	clampPoint: function ( point, optionalTarget ) {

		var result = optionalTarget || new THREE.Vector2();
		return result.copy( point ).clamp( this.min, this.max );

	},

	distanceToPoint: function () {

		var v1 = new THREE.Vector2();

		return function ( point ) {

			var clampedPoint = v1.copy( point ).clamp( this.min, this.max );
			return clampedPoint.sub( point ).length();

		};

	}(),

	intersect: function ( box ) {

		this.min.max( box.min );
		this.max.min( box.max );

		return this;

	},

	union: function ( box ) {

		this.min.min( box.min );
		this.max.max( box.max );

		return this;

	},

	translate: function ( offset ) {

		this.min.add( offset );
		this.max.add( offset );

		return this;

	},

	equals: function ( box ) {

		return box.min.equals( this.min ) && box.max.equals( this.max );

	}

};

// File:src/math/Box3.js

/**
 * @author bhouston / http://clara.io
 * @author WestLangley / http://github.com/WestLangley
 */

THREE.Box3 = function ( min, max ) {

	this.min = ( min !== undefined ) ? min : new THREE.Vector3( + Infinity, + Infinity, + Infinity );
	this.max = ( max !== undefined ) ? max : new THREE.Vector3( - Infinity, - Infinity, - Infinity );

};

THREE.Box3.prototype = {

	constructor: THREE.Box3,

	set: function ( min, max ) {

		this.min.copy( min );
		this.max.copy( max );

		return this;

	},

	setFromArray: function ( array ) {

		this.makeEmpty();

		var minX = + Infinity;
		var minY = + Infinity;
		var minZ = + Infinity;

		var maxX = - Infinity;
		var maxY = - Infinity;
		var maxZ = - Infinity;

		for ( var i = 0, il = array.length; i < il; i += 3 ) {

			var x = array[ i ];
			var y = array[ i + 1 ];
			var z = array[ i + 2 ];

			if ( x < minX ) minX = x;
			if ( y < minY ) minY = y;
			if ( z < minZ ) minZ = z;

			if ( x > maxX ) maxX = x;
			if ( y > maxY ) maxY = y;
			if ( z > maxZ ) maxZ = z;

		}

		this.min.set( minX, minY, minZ );
		this.max.set( maxX, maxY, maxZ );

	},

	setFromPoints: function ( points ) {

		this.makeEmpty();

		for ( var i = 0, il = points.length; i < il; i ++ ) {

			this.expandByPoint( points[ i ] );

		}

		return this;

	},

	setFromCenterAndSize: function () {

		var v1 = new THREE.Vector3();

		return function ( center, size ) {

			var halfSize = v1.copy( size ).multiplyScalar( 0.5 );

			this.min.copy( center ).sub( halfSize );
			this.max.copy( center ).add( halfSize );

			return this;

		};

	}(),

	setFromObject: function () {

		// Computes the world-axis-aligned bounding box of an object (including its children),
		// accounting for both the object's, and children's, world transforms

		var box;

		return function ( object ) {

			if ( box === undefined ) box = new THREE.Box3();

			var scope = this;

			this.makeEmpty();

			object.updateMatrixWorld( true );

			object.traverse( function ( node ) {

				var geometry = node.geometry;

				if ( geometry !== undefined ) {

					if ( geometry.boundingBox === null ) {

						geometry.computeBoundingBox();

					}

					box.copy( geometry.boundingBox );
					box.applyMatrix4( node.matrixWorld );
					scope.union( box );

				}

			} );

			return this;

		};

	}(),

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( box ) {

		this.min.copy( box.min );
		this.max.copy( box.max );

		return this;

	},

	makeEmpty: function () {

		this.min.x = this.min.y = this.min.z = + Infinity;
		this.max.x = this.max.y = this.max.z = - Infinity;

		return this;

	},

	isEmpty: function () {

		// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes

		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );

	},

	center: function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();
		return result.addVectors( this.min, this.max ).multiplyScalar( 0.5 );

	},

	size: function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();
		return result.subVectors( this.max, this.min );

	},

	expandByPoint: function ( point ) {

		this.min.min( point );
		this.max.max( point );

		return this;

	},

	expandByVector: function ( vector ) {

		this.min.sub( vector );
		this.max.add( vector );

		return this;

	},

	expandByScalar: function ( scalar ) {

		this.min.addScalar( - scalar );
		this.max.addScalar( scalar );

		return this;

	},

	containsPoint: function ( point ) {

		if ( point.x < this.min.x || point.x > this.max.x ||
				 point.y < this.min.y || point.y > this.max.y ||
				 point.z < this.min.z || point.z > this.max.z ) {

			return false;

		}

		return true;

	},

	containsBox: function ( box ) {

		if ( ( this.min.x <= box.min.x ) && ( box.max.x <= this.max.x ) &&
			 ( this.min.y <= box.min.y ) && ( box.max.y <= this.max.y ) &&
			 ( this.min.z <= box.min.z ) && ( box.max.z <= this.max.z ) ) {

			return true;

		}

		return false;

	},

	getParameter: function ( point, optionalTarget ) {

		// This can potentially have a divide by zero if the box
		// has a size dimension of 0.

		var result = optionalTarget || new THREE.Vector3();

		return result.set(
			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
			( point.y - this.min.y ) / ( this.max.y - this.min.y ),
			( point.z - this.min.z ) / ( this.max.z - this.min.z )
		);

	},

	intersectsBox: function ( box ) {

		// using 6 splitting planes to rule out intersections.

		if ( box.max.x < this.min.x || box.min.x > this.max.x ||
				 box.max.y < this.min.y || box.min.y > this.max.y ||
				 box.max.z < this.min.z || box.min.z > this.max.z ) {

			return false;

		}

		return true;

	},

	intersectsSphere: ( function () {

		var closestPoint;

		return function intersectsSphere( sphere ) {

			if ( closestPoint === undefined ) closestPoint = new THREE.Vector3();

			// Find the point on the AABB closest to the sphere center.
			this.clampPoint( sphere.center, closestPoint );

			// If that point is inside the sphere, the AABB and sphere intersect.
			return closestPoint.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );

		};

	} )(),

	intersectsPlane: function ( plane ) {

		// We compute the minimum and maximum dot product values. If those values
		// are on the same side (back or front) of the plane, then there is no intersection.

		var min, max;

		if ( plane.normal.x > 0 ) {

			min = plane.normal.x * this.min.x;
			max = plane.normal.x * this.max.x;

		} else {

			min = plane.normal.x * this.max.x;
			max = plane.normal.x * this.min.x;

		}

		if ( plane.normal.y > 0 ) {

			min += plane.normal.y * this.min.y;
			max += plane.normal.y * this.max.y;

		} else {

			min += plane.normal.y * this.max.y;
			max += plane.normal.y * this.min.y;

		}

		if ( plane.normal.z > 0 ) {

			min += plane.normal.z * this.min.z;
			max += plane.normal.z * this.max.z;

		} else {

			min += plane.normal.z * this.max.z;
			max += plane.normal.z * this.min.z;

		}

		return ( min <= plane.constant && max >= plane.constant );

	},

	clampPoint: function ( point, optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();
		return result.copy( point ).clamp( this.min, this.max );

	},

	distanceToPoint: function () {

		var v1 = new THREE.Vector3();

		return function ( point ) {

			var clampedPoint = v1.copy( point ).clamp( this.min, this.max );
			return clampedPoint.sub( point ).length();

		};

	}(),

	getBoundingSphere: function () {

		var v1 = new THREE.Vector3();

		return function ( optionalTarget ) {

			var result = optionalTarget || new THREE.Sphere();

			result.center = this.center();
			result.radius = this.size( v1 ).length() * 0.5;

			return result;

		};

	}(),

	intersect: function ( box ) {

		this.min.max( box.min );
		this.max.min( box.max );

		return this;

	},

	union: function ( box ) {

		this.min.min( box.min );
		this.max.max( box.max );

		return this;

	},

	applyMatrix4: function () {

		var points = [
			new THREE.Vector3(),
			new THREE.Vector3(),
			new THREE.Vector3(),
			new THREE.Vector3(),
			new THREE.Vector3(),
			new THREE.Vector3(),
			new THREE.Vector3(),
			new THREE.Vector3()
		];

		return function ( matrix ) {

			// NOTE: I am using a binary pattern to specify all 2^3 combinations below
			points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000
			points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001
			points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010
			points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011
			points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100
			points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101
			points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110
			points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix );	// 111

			this.makeEmpty();
			this.setFromPoints( points );

			return this;

		};

	}(),

	translate: function ( offset ) {

		this.min.add( offset );
		this.max.add( offset );

		return this;

	},

	equals: function ( box ) {

		return box.min.equals( this.min ) && box.max.equals( this.max );

	}

};

// File:src/math/Matrix3.js

/**
 * @author alteredq / http://alteredqualia.com/
 * @author WestLangley / http://github.com/WestLangley
 * @author bhouston / http://clara.io
 */

THREE.Matrix3 = function () {

	this.elements = new Float32Array( [

		1, 0, 0,
		0, 1, 0,
		0, 0, 1

	] );

	if ( arguments.length > 0 ) {

		console.error( 'THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.' );

	}

};

THREE.Matrix3.prototype = {

	constructor: THREE.Matrix3,

	set: function ( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {

		var te = this.elements;

		te[ 0 ] = n11; te[ 3 ] = n12; te[ 6 ] = n13;
		te[ 1 ] = n21; te[ 4 ] = n22; te[ 7 ] = n23;
		te[ 2 ] = n31; te[ 5 ] = n32; te[ 8 ] = n33;

		return this;

	},

	identity: function () {

		this.set(

			1, 0, 0,
			0, 1, 0,
			0, 0, 1

		);

		return this;

	},

	clone: function () {

		return new this.constructor().fromArray( this.elements );

	},

	copy: function ( m ) {

		var me = m.elements;

		this.set(

			me[ 0 ], me[ 3 ], me[ 6 ],
			me[ 1 ], me[ 4 ], me[ 7 ],
			me[ 2 ], me[ 5 ], me[ 8 ]

		);

		return this;

	},

	applyToVector3Array: function () {

		var v1;

		return function ( array, offset, length ) {

			if ( v1 === undefined ) v1 = new THREE.Vector3();
			if ( offset === undefined ) offset = 0;
			if ( length === undefined ) length = array.length;

			for ( var i = 0, j = offset; i < length; i += 3, j += 3 ) {

				v1.fromArray( array, j );
				v1.applyMatrix3( this );
				v1.toArray( array, j );

			}

			return array;

		};

	}(),

	applyToBuffer: function () {

		var v1;

		return function applyToBuffer( buffer, offset, length ) {

			if ( v1 === undefined ) v1 = new THREE.Vector3();
			if ( offset === undefined ) offset = 0;
			if ( length === undefined ) length = buffer.length / buffer.itemSize;

			for ( var i = 0, j = offset; i < length; i ++, j ++ ) {

				v1.x = buffer.getX( j );
				v1.y = buffer.getY( j );
				v1.z = buffer.getZ( j );

				v1.applyMatrix3( this );

				buffer.setXYZ( v1.x, v1.y, v1.z );

			}

			return buffer;

		};

	}(),

	multiplyScalar: function ( s ) {

		var te = this.elements;

		te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
		te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
		te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;

		return this;

	},

	determinant: function () {

		var te = this.elements;

		var a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
			d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
			g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];

		return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;

	},

	getInverse: function ( matrix, throwOnDegenerate ) {

		// input: THREE.Matrix4
		// ( based on http://code.google.com/p/webgl-mjs/ )

		var me = matrix.elements;
		var te = this.elements;

		te[ 0 ] =   me[ 10 ] * me[ 5 ] - me[ 6 ] * me[ 9 ];
		te[ 1 ] = - me[ 10 ] * me[ 1 ] + me[ 2 ] * me[ 9 ];
		te[ 2 ] =   me[ 6 ] * me[ 1 ] - me[ 2 ] * me[ 5 ];
		te[ 3 ] = - me[ 10 ] * me[ 4 ] + me[ 6 ] * me[ 8 ];
		te[ 4 ] =   me[ 10 ] * me[ 0 ] - me[ 2 ] * me[ 8 ];
		te[ 5 ] = - me[ 6 ] * me[ 0 ] + me[ 2 ] * me[ 4 ];
		te[ 6 ] =   me[ 9 ] * me[ 4 ] - me[ 5 ] * me[ 8 ];
		te[ 7 ] = - me[ 9 ] * me[ 0 ] + me[ 1 ] * me[ 8 ];
		te[ 8 ] =   me[ 5 ] * me[ 0 ] - me[ 1 ] * me[ 4 ];

		var det = me[ 0 ] * te[ 0 ] + me[ 1 ] * te[ 3 ] + me[ 2 ] * te[ 6 ];

		// no inverse

		if ( det === 0 ) {

			var msg = "THREE.Matrix3.getInverse(): can't invert matrix, determinant is 0";

			if ( throwOnDegenerate || false ) {

				throw new Error( msg );

			} else {

				console.warn( msg );

			}

			this.identity();

			return this;

		}

		this.multiplyScalar( 1.0 / det );

		return this;

	},

	transpose: function () {

		var tmp, m = this.elements;

		tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
		tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
		tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;

		return this;

	},

	flattenToArrayOffset: function ( array, offset ) {

		var te = this.elements;

		array[ offset ] = te[ 0 ];
		array[ offset + 1 ] = te[ 1 ];
		array[ offset + 2 ] = te[ 2 ];

		array[ offset + 3 ] = te[ 3 ];
		array[ offset + 4 ] = te[ 4 ];
		array[ offset + 5 ] = te[ 5 ];

		array[ offset + 6 ] = te[ 6 ];
		array[ offset + 7 ] = te[ 7 ];
		array[ offset + 8 ]  = te[ 8 ];

		return array;

	},

	getNormalMatrix: function ( m ) {

		// input: THREE.Matrix4

		this.getInverse( m ).transpose();

		return this;

	},

	transposeIntoArray: function ( r ) {

		var m = this.elements;

		r[ 0 ] = m[ 0 ];
		r[ 1 ] = m[ 3 ];
		r[ 2 ] = m[ 6 ];
		r[ 3 ] = m[ 1 ];
		r[ 4 ] = m[ 4 ];
		r[ 5 ] = m[ 7 ];
		r[ 6 ] = m[ 2 ];
		r[ 7 ] = m[ 5 ];
		r[ 8 ] = m[ 8 ];

		return this;

	},

	fromArray: function ( array ) {

		this.elements.set( array );

		return this;

	},

	toArray: function () {

		var te = this.elements;

		return [
			te[ 0 ], te[ 1 ], te[ 2 ],
			te[ 3 ], te[ 4 ], te[ 5 ],
			te[ 6 ], te[ 7 ], te[ 8 ]
		];

	}

};

// File:src/math/Matrix4.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author supereggbert / http://www.paulbrunt.co.uk/
 * @author philogb / http://blog.thejit.org/
 * @author jordi_ros / http://plattsoft.com
 * @author D1plo1d / http://github.com/D1plo1d
 * @author alteredq / http://alteredqualia.com/
 * @author mikael emtinger / http://gomo.se/
 * @author timknip / http://www.floorplanner.com/
 * @author bhouston / http://clara.io
 * @author WestLangley / http://github.com/WestLangley
 */

THREE.Matrix4 = function () {

	this.elements = new Float32Array( [

		1, 0, 0, 0,
		0, 1, 0, 0,
		0, 0, 1, 0,
		0, 0, 0, 1

	] );

	if ( arguments.length > 0 ) {

		console.error( 'THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.' );

	}

};

THREE.Matrix4.prototype = {

	constructor: THREE.Matrix4,

	set: function ( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {

		var te = this.elements;

		te[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;
		te[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;
		te[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;
		te[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;

		return this;

	},

	identity: function () {

		this.set(

			1, 0, 0, 0,
			0, 1, 0, 0,
			0, 0, 1, 0,
			0, 0, 0, 1

		);

		return this;

	},

	clone: function () {

		return new THREE.Matrix4().fromArray( this.elements );

	},

	copy: function ( m ) {

		this.elements.set( m.elements );

		return this;

	},

	copyPosition: function ( m ) {

		var te = this.elements;
		var me = m.elements;

		te[ 12 ] = me[ 12 ];
		te[ 13 ] = me[ 13 ];
		te[ 14 ] = me[ 14 ];

		return this;

	},

	extractBasis: function ( xAxis, yAxis, zAxis ) {

		var te = this.elements;

		xAxis.set( te[ 0 ], te[ 1 ], te[ 2 ] );
		yAxis.set( te[ 4 ], te[ 5 ], te[ 6 ] );
		zAxis.set( te[ 8 ], te[ 9 ], te[ 10 ] );

		return this;

	},

	makeBasis: function ( xAxis, yAxis, zAxis ) {

		this.set(
			xAxis.x, yAxis.x, zAxis.x, 0,
			xAxis.y, yAxis.y, zAxis.y, 0,
			xAxis.z, yAxis.z, zAxis.z, 0,
			0,       0,       0,       1
		);

		return this;

	},

	extractRotation: function () {

		var v1;

		return function ( m ) {

			if ( v1 === undefined ) v1 = new THREE.Vector3();

			var te = this.elements;
			var me = m.elements;

			var scaleX = 1 / v1.set( me[ 0 ], me[ 1 ], me[ 2 ] ).length();
			var scaleY = 1 / v1.set( me[ 4 ], me[ 5 ], me[ 6 ] ).length();
			var scaleZ = 1 / v1.set( me[ 8 ], me[ 9 ], me[ 10 ] ).length();

			te[ 0 ] = me[ 0 ] * scaleX;
			te[ 1 ] = me[ 1 ] * scaleX;
			te[ 2 ] = me[ 2 ] * scaleX;

			te[ 4 ] = me[ 4 ] * scaleY;
			te[ 5 ] = me[ 5 ] * scaleY;
			te[ 6 ] = me[ 6 ] * scaleY;

			te[ 8 ] = me[ 8 ] * scaleZ;
			te[ 9 ] = me[ 9 ] * scaleZ;
			te[ 10 ] = me[ 10 ] * scaleZ;

			return this;

		};

	}(),

	makeRotationFromEuler: function ( euler ) {

		if ( euler instanceof THREE.Euler === false ) {

			console.error( 'THREE.Matrix: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.' );

		}

		var te = this.elements;

		var x = euler.x, y = euler.y, z = euler.z;
		var a = Math.cos( x ), b = Math.sin( x );
		var c = Math.cos( y ), d = Math.sin( y );
		var e = Math.cos( z ), f = Math.sin( z );

		if ( euler.order === 'XYZ' ) {

			var ae = a * e, af = a * f, be = b * e, bf = b * f;

			te[ 0 ] = c * e;
			te[ 4 ] = - c * f;
			te[ 8 ] = d;

			te[ 1 ] = af + be * d;
			te[ 5 ] = ae - bf * d;
			te[ 9 ] = - b * c;

			te[ 2 ] = bf - ae * d;
			te[ 6 ] = be + af * d;
			te[ 10 ] = a * c;

		} else if ( euler.order === 'YXZ' ) {

			var ce = c * e, cf = c * f, de = d * e, df = d * f;

			te[ 0 ] = ce + df * b;
			te[ 4 ] = de * b - cf;
			te[ 8 ] = a * d;

			te[ 1 ] = a * f;
			te[ 5 ] = a * e;
			te[ 9 ] = - b;

			te[ 2 ] = cf * b - de;
			te[ 6 ] = df + ce * b;
			te[ 10 ] = a * c;

		} else if ( euler.order === 'ZXY' ) {

			var ce = c * e, cf = c * f, de = d * e, df = d * f;

			te[ 0 ] = ce - df * b;
			te[ 4 ] = - a * f;
			te[ 8 ] = de + cf * b;

			te[ 1 ] = cf + de * b;
			te[ 5 ] = a * e;
			te[ 9 ] = df - ce * b;

			te[ 2 ] = - a * d;
			te[ 6 ] = b;
			te[ 10 ] = a * c;

		} else if ( euler.order === 'ZYX' ) {

			var ae = a * e, af = a * f, be = b * e, bf = b * f;

			te[ 0 ] = c * e;
			te[ 4 ] = be * d - af;
			te[ 8 ] = ae * d + bf;

			te[ 1 ] = c * f;
			te[ 5 ] = bf * d + ae;
			te[ 9 ] = af * d - be;

			te[ 2 ] = - d;
			te[ 6 ] = b * c;
			te[ 10 ] = a * c;

		} else if ( euler.order === 'YZX' ) {

			var ac = a * c, ad = a * d, bc = b * c, bd = b * d;

			te[ 0 ] = c * e;
			te[ 4 ] = bd - ac * f;
			te[ 8 ] = bc * f + ad;

			te[ 1 ] = f;
			te[ 5 ] = a * e;
			te[ 9 ] = - b * e;

			te[ 2 ] = - d * e;
			te[ 6 ] = ad * f + bc;
			te[ 10 ] = ac - bd * f;

		} else if ( euler.order === 'XZY' ) {

			var ac = a * c, ad = a * d, bc = b * c, bd = b * d;

			te[ 0 ] = c * e;
			te[ 4 ] = - f;
			te[ 8 ] = d * e;

			te[ 1 ] = ac * f + bd;
			te[ 5 ] = a * e;
			te[ 9 ] = ad * f - bc;

			te[ 2 ] = bc * f - ad;
			te[ 6 ] = b * e;
			te[ 10 ] = bd * f + ac;

		}

		// last column
		te[ 3 ] = 0;
		te[ 7 ] = 0;
		te[ 11 ] = 0;

		// bottom row
		te[ 12 ] = 0;
		te[ 13 ] = 0;
		te[ 14 ] = 0;
		te[ 15 ] = 1;

		return this;

	},

	makeRotationFromQuaternion: function ( q ) {

		var te = this.elements;

		var x = q.x, y = q.y, z = q.z, w = q.w;
		var x2 = x + x, y2 = y + y, z2 = z + z;
		var xx = x * x2, xy = x * y2, xz = x * z2;
		var yy = y * y2, yz = y * z2, zz = z * z2;
		var wx = w * x2, wy = w * y2, wz = w * z2;

		te[ 0 ] = 1 - ( yy + zz );
		te[ 4 ] = xy - wz;
		te[ 8 ] = xz + wy;

		te[ 1 ] = xy + wz;
		te[ 5 ] = 1 - ( xx + zz );
		te[ 9 ] = yz - wx;

		te[ 2 ] = xz - wy;
		te[ 6 ] = yz + wx;
		te[ 10 ] = 1 - ( xx + yy );

		// last column
		te[ 3 ] = 0;
		te[ 7 ] = 0;
		te[ 11 ] = 0;

		// bottom row
		te[ 12 ] = 0;
		te[ 13 ] = 0;
		te[ 14 ] = 0;
		te[ 15 ] = 1;

		return this;

	},

	lookAt: function () {

		var x, y, z;

		return function ( eye, target, up ) {

			if ( x === undefined ) x = new THREE.Vector3();
			if ( y === undefined ) y = new THREE.Vector3();
			if ( z === undefined ) z = new THREE.Vector3();

			var te = this.elements;

			z.subVectors( eye, target ).normalize();

			if ( z.lengthSq() === 0 ) {

				z.z = 1;

			}

			x.crossVectors( up, z ).normalize();

			if ( x.lengthSq() === 0 ) {

				z.x += 0.0001;
				x.crossVectors( up, z ).normalize();

			}

			y.crossVectors( z, x );


			te[ 0 ] = x.x; te[ 4 ] = y.x; te[ 8 ] = z.x;
			te[ 1 ] = x.y; te[ 5 ] = y.y; te[ 9 ] = z.y;
			te[ 2 ] = x.z; te[ 6 ] = y.z; te[ 10 ] = z.z;

			return this;

		};

	}(),

	multiply: function ( m, n ) {

		if ( n !== undefined ) {

			console.warn( 'THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.' );
			return this.multiplyMatrices( m, n );

		}

		return this.multiplyMatrices( this, m );

	},

	multiplyMatrices: function ( a, b ) {

		var ae = a.elements;
		var be = b.elements;
		var te = this.elements;

		var a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];
		var a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];
		var a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];
		var a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];

		var b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];
		var b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];
		var b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];
		var b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];

		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
		te[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
		te[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
		te[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;

		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
		te[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
		te[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
		te[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;

		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
		te[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
		te[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
		te[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;

		te[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
		te[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
		te[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
		te[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;

		return this;

	},

	multiplyToArray: function ( a, b, r ) {

		var te = this.elements;

		this.multiplyMatrices( a, b );

		r[ 0 ] = te[ 0 ]; r[ 1 ] = te[ 1 ]; r[ 2 ] = te[ 2 ]; r[ 3 ] = te[ 3 ];
		r[ 4 ] = te[ 4 ]; r[ 5 ] = te[ 5 ]; r[ 6 ] = te[ 6 ]; r[ 7 ] = te[ 7 ];
		r[ 8 ]  = te[ 8 ]; r[ 9 ]  = te[ 9 ]; r[ 10 ] = te[ 10 ]; r[ 11 ] = te[ 11 ];
		r[ 12 ] = te[ 12 ]; r[ 13 ] = te[ 13 ]; r[ 14 ] = te[ 14 ]; r[ 15 ] = te[ 15 ];

		return this;

	},

	multiplyScalar: function ( s ) {

		var te = this.elements;

		te[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;
		te[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;
		te[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;
		te[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;

		return this;

	},

	applyToVector3Array: function () {

		var v1;

		return function ( array, offset, length ) {

			if ( v1 === undefined ) v1 = new THREE.Vector3();
			if ( offset === undefined ) offset = 0;
			if ( length === undefined ) length = array.length;

			for ( var i = 0, j = offset; i < length; i += 3, j += 3 ) {

				v1.fromArray( array, j );
				v1.applyMatrix4( this );
				v1.toArray( array, j );

			}

			return array;

		};

	}(),

	applyToBuffer: function () {

		var v1;

		return function applyToBuffer( buffer, offset, length ) {

			if ( v1 === undefined ) v1 = new THREE.Vector3();
			if ( offset === undefined ) offset = 0;
			if ( length === undefined ) length = buffer.length / buffer.itemSize;

			for ( var i = 0, j = offset; i < length; i ++, j ++ ) {

				v1.x = buffer.getX( j );
				v1.y = buffer.getY( j );
				v1.z = buffer.getZ( j );

				v1.applyMatrix4( this );

				buffer.setXYZ( v1.x, v1.y, v1.z );

			}

			return buffer;

		};

	}(),

	determinant: function () {

		var te = this.elements;

		var n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];
		var n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];
		var n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];
		var n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];

		//TODO: make this more efficient
		//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )

		return (
			n41 * (
				+ n14 * n23 * n32
				 - n13 * n24 * n32
				 - n14 * n22 * n33
				 + n12 * n24 * n33
				 + n13 * n22 * n34
				 - n12 * n23 * n34
			) +
			n42 * (
				+ n11 * n23 * n34
				 - n11 * n24 * n33
				 + n14 * n21 * n33
				 - n13 * n21 * n34
				 + n13 * n24 * n31
				 - n14 * n23 * n31
			) +
			n43 * (
				+ n11 * n24 * n32
				 - n11 * n22 * n34
				 - n14 * n21 * n32
				 + n12 * n21 * n34
				 + n14 * n22 * n31
				 - n12 * n24 * n31
			) +
			n44 * (
				- n13 * n22 * n31
				 - n11 * n23 * n32
				 + n11 * n22 * n33
				 + n13 * n21 * n32
				 - n12 * n21 * n33
				 + n12 * n23 * n31
			)

		);

	},

	transpose: function () {

		var te = this.elements;
		var tmp;

		tmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;
		tmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;
		tmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;

		tmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;
		tmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;
		tmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;

		return this;

	},

	flattenToArrayOffset: function ( array, offset ) {

		var te = this.elements;

		array[ offset ] = te[ 0 ];
		array[ offset + 1 ] = te[ 1 ];
		array[ offset + 2 ] = te[ 2 ];
		array[ offset + 3 ] = te[ 3 ];

		array[ offset + 4 ] = te[ 4 ];
		array[ offset + 5 ] = te[ 5 ];
		array[ offset + 6 ] = te[ 6 ];
		array[ offset + 7 ] = te[ 7 ];

		array[ offset + 8 ]  = te[ 8 ];
		array[ offset + 9 ]  = te[ 9 ];
		array[ offset + 10 ] = te[ 10 ];
		array[ offset + 11 ] = te[ 11 ];

		array[ offset + 12 ] = te[ 12 ];
		array[ offset + 13 ] = te[ 13 ];
		array[ offset + 14 ] = te[ 14 ];
		array[ offset + 15 ] = te[ 15 ];

		return array;

	},

	getPosition: function () {

		var v1;

		return function () {

			if ( v1 === undefined ) v1 = new THREE.Vector3();
			console.warn( 'THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.' );

			var te = this.elements;
			return v1.set( te[ 12 ], te[ 13 ], te[ 14 ] );

		};

	}(),

	setPosition: function ( v ) {

		var te = this.elements;

		te[ 12 ] = v.x;
		te[ 13 ] = v.y;
		te[ 14 ] = v.z;

		return this;

	},

	getInverse: function ( m, throwOnInvertible ) {

		// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm
		var te = this.elements;
		var me = m.elements;

		var n11 = me[ 0 ], n12 = me[ 4 ], n13 = me[ 8 ], n14 = me[ 12 ];
		var n21 = me[ 1 ], n22 = me[ 5 ], n23 = me[ 9 ], n24 = me[ 13 ];
		var n31 = me[ 2 ], n32 = me[ 6 ], n33 = me[ 10 ], n34 = me[ 14 ];
		var n41 = me[ 3 ], n42 = me[ 7 ], n43 = me[ 11 ], n44 = me[ 15 ];

		te[ 0 ] = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44;
		te[ 4 ] = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44;
		te[ 8 ] = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44;
		te[ 12 ] = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
		te[ 1 ] = n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44;
		te[ 5 ] = n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44;
		te[ 9 ] = n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44;
		te[ 13 ] = n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34;
		te[ 2 ] = n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44;
		te[ 6 ] = n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44;
		te[ 10 ] = n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44;
		te[ 14 ] = n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34;
		te[ 3 ] = n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43;
		te[ 7 ] = n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43;
		te[ 11 ] = n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43;
		te[ 15 ] = n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33;

		var det = n11 * te[ 0 ] + n21 * te[ 4 ] + n31 * te[ 8 ] + n41 * te[ 12 ];

		if ( det === 0 ) {

			var msg = "THREE.Matrix4.getInverse(): can't invert matrix, determinant is 0";

			if ( throwOnInvertible || false ) {

				throw new Error( msg );

			} else {

				console.warn( msg );

			}

			this.identity();

			return this;

		}

		this.multiplyScalar( 1 / det );

		return this;

	},

	scale: function ( v ) {

		var te = this.elements;
		var x = v.x, y = v.y, z = v.z;

		te[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;
		te[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;
		te[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;
		te[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;

		return this;

	},

	getMaxScaleOnAxis: function () {

		var te = this.elements;

		var scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];
		var scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];
		var scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];

		return Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );

	},

	makeTranslation: function ( x, y, z ) {

		this.set(

			1, 0, 0, x,
			0, 1, 0, y,
			0, 0, 1, z,
			0, 0, 0, 1

		);

		return this;

	},

	makeRotationX: function ( theta ) {

		var c = Math.cos( theta ), s = Math.sin( theta );

		this.set(

			1, 0,  0, 0,
			0, c, - s, 0,
			0, s,  c, 0,
			0, 0,  0, 1

		);

		return this;

	},

	makeRotationY: function ( theta ) {

		var c = Math.cos( theta ), s = Math.sin( theta );

		this.set(

			 c, 0, s, 0,
			 0, 1, 0, 0,
			- s, 0, c, 0,
			 0, 0, 0, 1

		);

		return this;

	},

	makeRotationZ: function ( theta ) {

		var c = Math.cos( theta ), s = Math.sin( theta );

		this.set(

			c, - s, 0, 0,
			s,  c, 0, 0,
			0,  0, 1, 0,
			0,  0, 0, 1

		);

		return this;

	},

	makeRotationAxis: function ( axis, angle ) {

		// Based on http://www.gamedev.net/reference/articles/article1199.asp

		var c = Math.cos( angle );
		var s = Math.sin( angle );
		var t = 1 - c;
		var x = axis.x, y = axis.y, z = axis.z;
		var tx = t * x, ty = t * y;

		this.set(

			tx * x + c, tx * y - s * z, tx * z + s * y, 0,
			tx * y + s * z, ty * y + c, ty * z - s * x, 0,
			tx * z - s * y, ty * z + s * x, t * z * z + c, 0,
			0, 0, 0, 1

		);

		 return this;

	},

	makeScale: function ( x, y, z ) {

		this.set(

			x, 0, 0, 0,
			0, y, 0, 0,
			0, 0, z, 0,
			0, 0, 0, 1

		);

		return this;

	},

	compose: function ( position, quaternion, scale ) {

		this.makeRotationFromQuaternion( quaternion );
		this.scale( scale );
		this.setPosition( position );

		return this;

	},

	decompose: function () {

		var vector, matrix;

		return function ( position, quaternion, scale ) {

			if ( vector === undefined ) vector = new THREE.Vector3();
			if ( matrix === undefined ) matrix = new THREE.Matrix4();

			var te = this.elements;

			var sx = vector.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();
			var sy = vector.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();
			var sz = vector.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();

			// if determine is negative, we need to invert one scale
			var det = this.determinant();
			if ( det < 0 ) {

				sx = - sx;

			}

			position.x = te[ 12 ];
			position.y = te[ 13 ];
			position.z = te[ 14 ];

			// scale the rotation part

			matrix.elements.set( this.elements ); // at this point matrix is incomplete so we can't use .copy()

			var invSX = 1 / sx;
			var invSY = 1 / sy;
			var invSZ = 1 / sz;

			matrix.elements[ 0 ] *= invSX;
			matrix.elements[ 1 ] *= invSX;
			matrix.elements[ 2 ] *= invSX;

			matrix.elements[ 4 ] *= invSY;
			matrix.elements[ 5 ] *= invSY;
			matrix.elements[ 6 ] *= invSY;

			matrix.elements[ 8 ] *= invSZ;
			matrix.elements[ 9 ] *= invSZ;
			matrix.elements[ 10 ] *= invSZ;

			quaternion.setFromRotationMatrix( matrix );

			scale.x = sx;
			scale.y = sy;
			scale.z = sz;

			return this;

		};

	}(),

	makeFrustum: function ( left, right, bottom, top, near, far ) {

		var te = this.elements;
		var x = 2 * near / ( right - left );
		var y = 2 * near / ( top - bottom );

		var a = ( right + left ) / ( right - left );
		var b = ( top + bottom ) / ( top - bottom );
		var c = - ( far + near ) / ( far - near );
		var d = - 2 * far * near / ( far - near );

		te[ 0 ] = x;	te[ 4 ] = 0;	te[ 8 ] = a;	te[ 12 ] = 0;
		te[ 1 ] = 0;	te[ 5 ] = y;	te[ 9 ] = b;	te[ 13 ] = 0;
		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = c;	te[ 14 ] = d;
		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = - 1;	te[ 15 ] = 0;

		return this;

	},

	makePerspective: function ( fov, aspect, near, far ) {

		var ymax = near * Math.tan( THREE.Math.degToRad( fov * 0.5 ) );
		var ymin = - ymax;
		var xmin = ymin * aspect;
		var xmax = ymax * aspect;

		return this.makeFrustum( xmin, xmax, ymin, ymax, near, far );

	},

	makeOrthographic: function ( left, right, top, bottom, near, far ) {

		var te = this.elements;
		var w = right - left;
		var h = top - bottom;
		var p = far - near;

		var x = ( right + left ) / w;
		var y = ( top + bottom ) / h;
		var z = ( far + near ) / p;

		te[ 0 ] = 2 / w;	te[ 4 ] = 0;	te[ 8 ] = 0;	te[ 12 ] = - x;
		te[ 1 ] = 0;	te[ 5 ] = 2 / h;	te[ 9 ] = 0;	te[ 13 ] = - y;
		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = - 2 / p;	te[ 14 ] = - z;
		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = 0;	te[ 15 ] = 1;

		return this;

	},

	equals: function ( matrix ) {

		var te = this.elements;
		var me = matrix.elements;

		for ( var i = 0; i < 16; i ++ ) {

			if ( te[ i ] !== me[ i ] ) return false;

		}

		return true;

	},

	fromArray: function ( array ) {

		this.elements.set( array );

		return this;

	},

	toArray: function () {

		var te = this.elements;

		return [
			te[ 0 ], te[ 1 ], te[ 2 ], te[ 3 ],
			te[ 4 ], te[ 5 ], te[ 6 ], te[ 7 ],
			te[ 8 ], te[ 9 ], te[ 10 ], te[ 11 ],
			te[ 12 ], te[ 13 ], te[ 14 ], te[ 15 ]
		];

	}

};

// File:src/math/Ray.js

/**
 * @author bhouston / http://clara.io
 */

THREE.Ray = function ( origin, direction ) {

	this.origin = ( origin !== undefined ) ? origin : new THREE.Vector3();
	this.direction = ( direction !== undefined ) ? direction : new THREE.Vector3();

};

THREE.Ray.prototype = {

	constructor: THREE.Ray,

	set: function ( origin, direction ) {

		this.origin.copy( origin );
		this.direction.copy( direction );

		return this;

	},

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( ray ) {

		this.origin.copy( ray.origin );
		this.direction.copy( ray.direction );

		return this;

	},

	at: function ( t, optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();

		return result.copy( this.direction ).multiplyScalar( t ).add( this.origin );

	},

	lookAt: function ( v ) {

		this.direction.copy( v ).sub( this.origin ).normalize();

	},

	recast: function () {

		var v1 = new THREE.Vector3();

		return function ( t ) {

			this.origin.copy( this.at( t, v1 ) );

			return this;

		};

	}(),

	closestPointToPoint: function ( point, optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();
		result.subVectors( point, this.origin );
		var directionDistance = result.dot( this.direction );

		if ( directionDistance < 0 ) {

			return result.copy( this.origin );

		}

		return result.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );

	},

	distanceToPoint: function ( point ) {

		return Math.sqrt( this.distanceSqToPoint( point ) );

	},

	distanceSqToPoint: function () {

		var v1 = new THREE.Vector3();

		return function ( point ) {

			var directionDistance = v1.subVectors( point, this.origin ).dot( this.direction );

			// point behind the ray

			if ( directionDistance < 0 ) {

				return this.origin.distanceToSquared( point );

			}

			v1.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );

			return v1.distanceToSquared( point );

		};

	}(),

	distanceSqToSegment: function () {

		var segCenter = new THREE.Vector3();
		var segDir = new THREE.Vector3();
		var diff = new THREE.Vector3();

		return function ( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {

			// from http://www.geometrictools.com/LibMathematics/Distance/Wm5DistRay3Segment3.cpp
			// It returns the min distance between the ray and the segment
			// defined by v0 and v1
			// It can also set two optional targets :
			// - The closest point on the ray
			// - The closest point on the segment

			segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );
			segDir.copy( v1 ).sub( v0 ).normalize();
			diff.copy( this.origin ).sub( segCenter );

			var segExtent = v0.distanceTo( v1 ) * 0.5;
			var a01 = - this.direction.dot( segDir );
			var b0 = diff.dot( this.direction );
			var b1 = - diff.dot( segDir );
			var c = diff.lengthSq();
			var det = Math.abs( 1 - a01 * a01 );
			var s0, s1, sqrDist, extDet;

			if ( det > 0 ) {

				// The ray and segment are not parallel.

				s0 = a01 * b1 - b0;
				s1 = a01 * b0 - b1;
				extDet = segExtent * det;

				if ( s0 >= 0 ) {

					if ( s1 >= - extDet ) {

						if ( s1 <= extDet ) {

							// region 0
							// Minimum at interior points of ray and segment.

							var invDet = 1 / det;
							s0 *= invDet;
							s1 *= invDet;
							sqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;

						} else {

							// region 1

							s1 = segExtent;
							s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
							sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

						}

					} else {

						// region 5

						s1 = - segExtent;
						s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
						sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

					}

				} else {

					if ( s1 <= - extDet ) {

						// region 4

						s0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );
						s1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
						sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

					} else if ( s1 <= extDet ) {

						// region 3

						s0 = 0;
						s1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );
						sqrDist = s1 * ( s1 + 2 * b1 ) + c;

					} else {

						// region 2

						s0 = Math.max( 0, - ( a01 * segExtent + b0 ) );
						s1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
						sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

					}

				}

			} else {

				// Ray and segment are parallel.

				s1 = ( a01 > 0 ) ? - segExtent : segExtent;
				s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
				sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;

			}

			if ( optionalPointOnRay ) {

				optionalPointOnRay.copy( this.direction ).multiplyScalar( s0 ).add( this.origin );

			}

			if ( optionalPointOnSegment ) {

				optionalPointOnSegment.copy( segDir ).multiplyScalar( s1 ).add( segCenter );

			}

			return sqrDist;

		};

	}(),

	intersectSphere: function () {

		var v1 = new THREE.Vector3();

		return function ( sphere, optionalTarget ) {

			v1.subVectors( sphere.center, this.origin );
			var tca = v1.dot( this.direction );
			var d2 = v1.dot( v1 ) - tca * tca;
			var radius2 = sphere.radius * sphere.radius;

			if ( d2 > radius2 ) return null;

			var thc = Math.sqrt( radius2 - d2 );

			// t0 = first intersect point - entrance on front of sphere
			var t0 = tca - thc;

			// t1 = second intersect point - exit point on back of sphere
			var t1 = tca + thc;

			// test to see if both t0 and t1 are behind the ray - if so, return null
			if ( t0 < 0 && t1 < 0 ) return null;

			// test to see if t0 is behind the ray:
			// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,
			// in order to always return an intersect point that is in front of the ray.
			if ( t0 < 0 ) return this.at( t1, optionalTarget );

			// else t0 is in front of the ray, so return the first collision point scaled by t0
			return this.at( t0, optionalTarget );

		}

	}(),

	intersectsSphere: function ( sphere ) {

		return this.distanceToPoint( sphere.center ) <= sphere.radius;

	},

	distanceToPlane: function ( plane ) {

		var denominator = plane.normal.dot( this.direction );

		if ( denominator === 0 ) {

			// line is coplanar, return origin
			if ( plane.distanceToPoint( this.origin ) === 0 ) {

				return 0;

			}

			// Null is preferable to undefined since undefined means.... it is undefined

			return null;

		}

		var t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;

		// Return if the ray never intersects the plane

		return t >= 0 ? t :  null;

	},

	intersectPlane: function ( plane, optionalTarget ) {

		var t = this.distanceToPlane( plane );

		if ( t === null ) {

			return null;

		}

		return this.at( t, optionalTarget );

	},



	intersectsPlane: function ( plane ) {

		// check if the ray lies on the plane first

		var distToPoint = plane.distanceToPoint( this.origin );

		if ( distToPoint === 0 ) {

			return true;

		}

		var denominator = plane.normal.dot( this.direction );

		if ( denominator * distToPoint < 0 ) {

			return true;

		}

		// ray origin is behind the plane (and is pointing behind it)

		return false;

	},

	intersectBox: function ( box, optionalTarget ) {

		var tmin, tmax, tymin, tymax, tzmin, tzmax;

		var invdirx = 1 / this.direction.x,
			invdiry = 1 / this.direction.y,
			invdirz = 1 / this.direction.z;

		var origin = this.origin;

		if ( invdirx >= 0 ) {

			tmin = ( box.min.x - origin.x ) * invdirx;
			tmax = ( box.max.x - origin.x ) * invdirx;

		} else {

			tmin = ( box.max.x - origin.x ) * invdirx;
			tmax = ( box.min.x - origin.x ) * invdirx;

		}

		if ( invdiry >= 0 ) {

			tymin = ( box.min.y - origin.y ) * invdiry;
			tymax = ( box.max.y - origin.y ) * invdiry;

		} else {

			tymin = ( box.max.y - origin.y ) * invdiry;
			tymax = ( box.min.y - origin.y ) * invdiry;

		}

		if ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;

		// These lines also handle the case where tmin or tmax is NaN
		// (result of 0 * Infinity). x !== x returns true if x is NaN

		if ( tymin > tmin || tmin !== tmin ) tmin = tymin;

		if ( tymax < tmax || tmax !== tmax ) tmax = tymax;

		if ( invdirz >= 0 ) {

			tzmin = ( box.min.z - origin.z ) * invdirz;
			tzmax = ( box.max.z - origin.z ) * invdirz;

		} else {

			tzmin = ( box.max.z - origin.z ) * invdirz;
			tzmax = ( box.min.z - origin.z ) * invdirz;

		}

		if ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;

		if ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;

		if ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;

		//return point closest to the ray (positive side)

		if ( tmax < 0 ) return null;

		return this.at( tmin >= 0 ? tmin : tmax, optionalTarget );

	},

	intersectsBox: ( function () {

		var v = new THREE.Vector3();

		return function ( box ) {

			return this.intersectBox( box, v ) !== null;

		};

	} )(),

	intersectTriangle: function () {

		// Compute the offset origin, edges, and normal.
		var diff = new THREE.Vector3();
		var edge1 = new THREE.Vector3();
		var edge2 = new THREE.Vector3();
		var normal = new THREE.Vector3();

		return function ( a, b, c, backfaceCulling, optionalTarget ) {

			// from http://www.geometrictools.com/LibMathematics/Intersection/Wm5IntrRay3Triangle3.cpp

			edge1.subVectors( b, a );
			edge2.subVectors( c, a );
			normal.crossVectors( edge1, edge2 );

			// Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
			// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
			//   |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
			//   |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
			//   |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)
			var DdN = this.direction.dot( normal );
			var sign;

			if ( DdN > 0 ) {

				if ( backfaceCulling ) return null;
				sign = 1;

			} else if ( DdN < 0 ) {

				sign = - 1;
				DdN = - DdN;

			} else {

				return null;

			}

			diff.subVectors( this.origin, a );
			var DdQxE2 = sign * this.direction.dot( edge2.crossVectors( diff, edge2 ) );

			// b1 < 0, no intersection
			if ( DdQxE2 < 0 ) {

				return null;

			}

			var DdE1xQ = sign * this.direction.dot( edge1.cross( diff ) );

			// b2 < 0, no intersection
			if ( DdE1xQ < 0 ) {

				return null;

			}

			// b1+b2 > 1, no intersection
			if ( DdQxE2 + DdE1xQ > DdN ) {

				return null;

			}

			// Line intersects triangle, check if ray does.
			var QdN = - sign * diff.dot( normal );

			// t < 0, no intersection
			if ( QdN < 0 ) {

				return null;

			}

			// Ray intersects triangle.
			return this.at( QdN / DdN, optionalTarget );

		};

	}(),

	applyMatrix4: function ( matrix4 ) {

		this.direction.add( this.origin ).applyMatrix4( matrix4 );
		this.origin.applyMatrix4( matrix4 );
		this.direction.sub( this.origin );
		this.direction.normalize();

		return this;

	},

	equals: function ( ray ) {

		return ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );

	}

};

// File:src/math/Sphere.js

/**
 * @author bhouston / http://clara.io
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Sphere = function ( center, radius ) {

	this.center = ( center !== undefined ) ? center : new THREE.Vector3();
	this.radius = ( radius !== undefined ) ? radius : 0;

};

THREE.Sphere.prototype = {

	constructor: THREE.Sphere,

	set: function ( center, radius ) {

		this.center.copy( center );
		this.radius = radius;

		return this;

	},

	setFromPoints: function () {

		var box = new THREE.Box3();

		return function ( points, optionalCenter ) {

			var center = this.center;

			if ( optionalCenter !== undefined ) {

				center.copy( optionalCenter );

			} else {

				box.setFromPoints( points ).center( center );

			}

			var maxRadiusSq = 0;

			for ( var i = 0, il = points.length; i < il; i ++ ) {

				maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );

			}

			this.radius = Math.sqrt( maxRadiusSq );

			return this;

		};

	}(),

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( sphere ) {

		this.center.copy( sphere.center );
		this.radius = sphere.radius;

		return this;

	},

	empty: function () {

		return ( this.radius <= 0 );

	},

	containsPoint: function ( point ) {

		return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );

	},

	distanceToPoint: function ( point ) {

		return ( point.distanceTo( this.center ) - this.radius );

	},

	intersectsSphere: function ( sphere ) {

		var radiusSum = this.radius + sphere.radius;

		return sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );

	},

	intersectsBox: function ( box ) {

		return box.intersectsSphere( this );

	},

	intersectsPlane: function ( plane ) {

		// We use the following equation to compute the signed distance from
		// the center of the sphere to the plane.
		//
		// distance = q * n - d
		//
		// If this distance is greater than the radius of the sphere,
		// then there is no intersection.

		return Math.abs( this.center.dot( plane.normal ) - plane.constant ) <= this.radius;

	},

	clampPoint: function ( point, optionalTarget ) {

		var deltaLengthSq = this.center.distanceToSquared( point );

		var result = optionalTarget || new THREE.Vector3();

		result.copy( point );

		if ( deltaLengthSq > ( this.radius * this.radius ) ) {

			result.sub( this.center ).normalize();
			result.multiplyScalar( this.radius ).add( this.center );

		}

		return result;

	},

	getBoundingBox: function ( optionalTarget ) {

		var box = optionalTarget || new THREE.Box3();

		box.set( this.center, this.center );
		box.expandByScalar( this.radius );

		return box;

	},

	applyMatrix4: function ( matrix ) {

		this.center.applyMatrix4( matrix );
		this.radius = this.radius * matrix.getMaxScaleOnAxis();

		return this;

	},

	translate: function ( offset ) {

		this.center.add( offset );

		return this;

	},

	equals: function ( sphere ) {

		return sphere.center.equals( this.center ) && ( sphere.radius === this.radius );

	}

};

// File:src/math/Frustum.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 * @author bhouston / http://clara.io
 */

THREE.Frustum = function ( p0, p1, p2, p3, p4, p5 ) {

	this.planes = [

		( p0 !== undefined ) ? p0 : new THREE.Plane(),
		( p1 !== undefined ) ? p1 : new THREE.Plane(),
		( p2 !== undefined ) ? p2 : new THREE.Plane(),
		( p3 !== undefined ) ? p3 : new THREE.Plane(),
		( p4 !== undefined ) ? p4 : new THREE.Plane(),
		( p5 !== undefined ) ? p5 : new THREE.Plane()

	];

};

THREE.Frustum.prototype = {

	constructor: THREE.Frustum,

	set: function ( p0, p1, p2, p3, p4, p5 ) {

		var planes = this.planes;

		planes[ 0 ].copy( p0 );
		planes[ 1 ].copy( p1 );
		planes[ 2 ].copy( p2 );
		planes[ 3 ].copy( p3 );
		planes[ 4 ].copy( p4 );
		planes[ 5 ].copy( p5 );

		return this;

	},

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( frustum ) {

		var planes = this.planes;

		for ( var i = 0; i < 6; i ++ ) {

			planes[ i ].copy( frustum.planes[ i ] );

		}

		return this;

	},

	setFromMatrix: function ( m ) {

		var planes = this.planes;
		var me = m.elements;
		var me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];
		var me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];
		var me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];
		var me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];

		planes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();
		planes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();
		planes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();
		planes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();
		planes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();
		planes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();

		return this;

	},

	intersectsObject: function () {

		var sphere = new THREE.Sphere();

		return function ( object ) {

			var geometry = object.geometry;

			if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

			sphere.copy( geometry.boundingSphere );
			sphere.applyMatrix4( object.matrixWorld );

			return this.intersectsSphere( sphere );

		};

	}(),

	intersectsSphere: function ( sphere ) {

		var planes = this.planes;
		var center = sphere.center;
		var negRadius = - sphere.radius;

		for ( var i = 0; i < 6; i ++ ) {

			var distance = planes[ i ].distanceToPoint( center );

			if ( distance < negRadius ) {

				return false;

			}

		}

		return true;

	},

	intersectsBox: function () {

		var p1 = new THREE.Vector3(),
			p2 = new THREE.Vector3();

		return function ( box ) {

			var planes = this.planes;

			for ( var i = 0; i < 6 ; i ++ ) {

				var plane = planes[ i ];

				p1.x = plane.normal.x > 0 ? box.min.x : box.max.x;
				p2.x = plane.normal.x > 0 ? box.max.x : box.min.x;
				p1.y = plane.normal.y > 0 ? box.min.y : box.max.y;
				p2.y = plane.normal.y > 0 ? box.max.y : box.min.y;
				p1.z = plane.normal.z > 0 ? box.min.z : box.max.z;
				p2.z = plane.normal.z > 0 ? box.max.z : box.min.z;

				var d1 = plane.distanceToPoint( p1 );
				var d2 = plane.distanceToPoint( p2 );

				// if both outside plane, no intersection

				if ( d1 < 0 && d2 < 0 ) {

					return false;

				}

			}

			return true;

		};

	}(),


	containsPoint: function ( point ) {

		var planes = this.planes;

		for ( var i = 0; i < 6; i ++ ) {

			if ( planes[ i ].distanceToPoint( point ) < 0 ) {

				return false;

			}

		}

		return true;

	}

};

// File:src/math/Plane.js

/**
 * @author bhouston / http://clara.io
 */

THREE.Plane = function ( normal, constant ) {

	this.normal = ( normal !== undefined ) ? normal : new THREE.Vector3( 1, 0, 0 );
	this.constant = ( constant !== undefined ) ? constant : 0;

};

THREE.Plane.prototype = {

	constructor: THREE.Plane,

	set: function ( normal, constant ) {

		this.normal.copy( normal );
		this.constant = constant;

		return this;

	},

	setComponents: function ( x, y, z, w ) {

		this.normal.set( x, y, z );
		this.constant = w;

		return this;

	},

	setFromNormalAndCoplanarPoint: function ( normal, point ) {

		this.normal.copy( normal );
		this.constant = - point.dot( this.normal );	// must be this.normal, not normal, as this.normal is normalized

		return this;

	},

	setFromCoplanarPoints: function () {

		var v1 = new THREE.Vector3();
		var v2 = new THREE.Vector3();

		return function ( a, b, c ) {

			var normal = v1.subVectors( c, b ).cross( v2.subVectors( a, b ) ).normalize();

			// Q: should an error be thrown if normal is zero (e.g. degenerate plane)?

			this.setFromNormalAndCoplanarPoint( normal, a );

			return this;

		};

	}(),

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( plane ) {

		this.normal.copy( plane.normal );
		this.constant = plane.constant;

		return this;

	},

	normalize: function () {

		// Note: will lead to a divide by zero if the plane is invalid.

		var inverseNormalLength = 1.0 / this.normal.length();
		this.normal.multiplyScalar( inverseNormalLength );
		this.constant *= inverseNormalLength;

		return this;

	},

	negate: function () {

		this.constant *= - 1;
		this.normal.negate();

		return this;

	},

	distanceToPoint: function ( point ) {

		return this.normal.dot( point ) + this.constant;

	},

	distanceToSphere: function ( sphere ) {

		return this.distanceToPoint( sphere.center ) - sphere.radius;

	},

	projectPoint: function ( point, optionalTarget ) {

		return this.orthoPoint( point, optionalTarget ).sub( point ).negate();

	},

	orthoPoint: function ( point, optionalTarget ) {

		var perpendicularMagnitude = this.distanceToPoint( point );

		var result = optionalTarget || new THREE.Vector3();
		return result.copy( this.normal ).multiplyScalar( perpendicularMagnitude );

	},

	intersectLine: function () {

		var v1 = new THREE.Vector3();

		return function ( line, optionalTarget ) {

			var result = optionalTarget || new THREE.Vector3();

			var direction = line.delta( v1 );

			var denominator = this.normal.dot( direction );

			if ( denominator === 0 ) {

				// line is coplanar, return origin
				if ( this.distanceToPoint( line.start ) === 0 ) {

					return result.copy( line.start );

				}

				// Unsure if this is the correct method to handle this case.
				return undefined;

			}

			var t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;

			if ( t < 0 || t > 1 ) {

				return undefined;

			}

			return result.copy( direction ).multiplyScalar( t ).add( line.start );

		};

	}(),

	intersectsLine: function ( line ) {

		// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.

		var startSign = this.distanceToPoint( line.start );
		var endSign = this.distanceToPoint( line.end );

		return ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );

	},

	intersectsBox: function ( box ) {

		return box.intersectsPlane( this );

	},

	intersectsSphere: function ( sphere ) {

		return sphere.intersectsPlane( this );

	},

	coplanarPoint: function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();
		return result.copy( this.normal ).multiplyScalar( - this.constant );

	},

	applyMatrix4: function () {

		var v1 = new THREE.Vector3();
		var v2 = new THREE.Vector3();
		var m1 = new THREE.Matrix3();

		return function ( matrix, optionalNormalMatrix ) {

			// compute new normal based on theory here:
			// http://www.songho.ca/opengl/gl_normaltransform.html
			var normalMatrix = optionalNormalMatrix || m1.getNormalMatrix( matrix );
			var newNormal = v1.copy( this.normal ).applyMatrix3( normalMatrix );

			var newCoplanarPoint = this.coplanarPoint( v2 );
			newCoplanarPoint.applyMatrix4( matrix );

			this.setFromNormalAndCoplanarPoint( newNormal, newCoplanarPoint );

			return this;

		};

	}(),

	translate: function ( offset ) {

		this.constant = this.constant - offset.dot( this.normal );

		return this;

	},

	equals: function ( plane ) {

		return plane.normal.equals( this.normal ) && ( plane.constant === this.constant );

	}

};

// File:src/math/Math.js

/**
 * @author alteredq / http://alteredqualia.com/
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Math = {

	generateUUID: function () {

		// http://www.broofa.com/Tools/Math.uuid.htm

		var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split( '' );
		var uuid = new Array( 36 );
		var rnd = 0, r;

		return function () {

			for ( var i = 0; i < 36; i ++ ) {

				if ( i === 8 || i === 13 || i === 18 || i === 23 ) {

					uuid[ i ] = '-';

				} else if ( i === 14 ) {

					uuid[ i ] = '4';

				} else {

					if ( rnd <= 0x02 ) rnd = 0x2000000 + ( Math.random() * 0x1000000 ) | 0;
					r = rnd & 0xf;
					rnd = rnd >> 4;
					uuid[ i ] = chars[ ( i === 19 ) ? ( r & 0x3 ) | 0x8 : r ];

				}

			}

			return uuid.join( '' );

		};

	}(),

	clamp: function ( value, min, max ) {

		return Math.max( min, Math.min( max, value ) );

	},

	// compute euclidian modulo of m % n
	// https://en.wikipedia.org/wiki/Modulo_operation

	euclideanModulo: function ( n, m ) {

		return ( ( n % m ) + m ) % m;

	},

	// Linear mapping from range <a1, a2> to range <b1, b2>

	mapLinear: function ( x, a1, a2, b1, b2 ) {

		return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );

	},

	// http://en.wikipedia.org/wiki/Smoothstep

	smoothstep: function ( x, min, max ) {

		if ( x <= min ) return 0;
		if ( x >= max ) return 1;

		x = ( x - min ) / ( max - min );

		return x * x * ( 3 - 2 * x );

	},

	smootherstep: function ( x, min, max ) {

		if ( x <= min ) return 0;
		if ( x >= max ) return 1;

		x = ( x - min ) / ( max - min );

		return x * x * x * ( x * ( x * 6 - 15 ) + 10 );

	},

	random16: function () {

		console.warn( 'THREE.Math.random16() has been deprecated. Use Math.random() instead.' );
		return Math.random();

	},

	// Random integer from <low, high> interval

	randInt: function ( low, high ) {

		return low + Math.floor( Math.random() * ( high - low + 1 ) );

	},

	// Random float from <low, high> interval

	randFloat: function ( low, high ) {

		return low + Math.random() * ( high - low );

	},

	// Random float from <-range/2, range/2> interval

	randFloatSpread: function ( range ) {

		return range * ( 0.5 - Math.random() );

	},

	degToRad: function () {

		var degreeToRadiansFactor = Math.PI / 180;

		return function ( degrees ) {

			return degrees * degreeToRadiansFactor;

		};

	}(),

	radToDeg: function () {

		var radianToDegreesFactor = 180 / Math.PI;

		return function ( radians ) {

			return radians * radianToDegreesFactor;

		};

	}(),

	isPowerOfTwo: function ( value ) {

		return ( value & ( value - 1 ) ) === 0 && value !== 0;

	},

	nearestPowerOfTwo: function ( value ) {

		return Math.pow( 2, Math.round( Math.log( value ) / Math.LN2 ) );

	},

	nextPowerOfTwo: function ( value ) {

		value --;
		value |= value >> 1;
		value |= value >> 2;
		value |= value >> 4;
		value |= value >> 8;
		value |= value >> 16;
		value ++;

		return value;

	}

};

// File:src/math/Spline.js

/**
 * Spline from Tween.js, slightly optimized (and trashed)
 * http://sole.github.com/tween.js/examples/05_spline.html
 *
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Spline = function ( points ) {

	this.points = points;

	var c = [], v3 = { x: 0, y: 0, z: 0 },
	point, intPoint, weight, w2, w3,
	pa, pb, pc, pd;

	this.initFromArray = function ( a ) {

		this.points = [];

		for ( var i = 0; i < a.length; i ++ ) {

			this.points[ i ] = { x: a[ i ][ 0 ], y: a[ i ][ 1 ], z: a[ i ][ 2 ] };

		}

	};

	this.getPoint = function ( k ) {

		point = ( this.points.length - 1 ) * k;
		intPoint = Math.floor( point );
		weight = point - intPoint;

		c[ 0 ] = intPoint === 0 ? intPoint : intPoint - 1;
		c[ 1 ] = intPoint;
		c[ 2 ] = intPoint  > this.points.length - 2 ? this.points.length - 1 : intPoint + 1;
		c[ 3 ] = intPoint  > this.points.length - 3 ? this.points.length - 1 : intPoint + 2;

		pa = this.points[ c[ 0 ] ];
		pb = this.points[ c[ 1 ] ];
		pc = this.points[ c[ 2 ] ];
		pd = this.points[ c[ 3 ] ];

		w2 = weight * weight;
		w3 = weight * w2;

		v3.x = interpolate( pa.x, pb.x, pc.x, pd.x, weight, w2, w3 );
		v3.y = interpolate( pa.y, pb.y, pc.y, pd.y, weight, w2, w3 );
		v3.z = interpolate( pa.z, pb.z, pc.z, pd.z, weight, w2, w3 );

		return v3;

	};

	this.getControlPointsArray = function () {

		var i, p, l = this.points.length,
			coords = [];

		for ( i = 0; i < l; i ++ ) {

			p = this.points[ i ];
			coords[ i ] = [ p.x, p.y, p.z ];

		}

		return coords;

	};

	// approximate length by summing linear segments

	this.getLength = function ( nSubDivisions ) {

		var i, index, nSamples, position,
			point = 0, intPoint = 0, oldIntPoint = 0,
			oldPosition = new THREE.Vector3(),
			tmpVec = new THREE.Vector3(),
			chunkLengths = [],
			totalLength = 0;

		// first point has 0 length

		chunkLengths[ 0 ] = 0;

		if ( ! nSubDivisions ) nSubDivisions = 100;

		nSamples = this.points.length * nSubDivisions;

		oldPosition.copy( this.points[ 0 ] );

		for ( i = 1; i < nSamples; i ++ ) {

			index = i / nSamples;

			position = this.getPoint( index );
			tmpVec.copy( position );

			totalLength += tmpVec.distanceTo( oldPosition );

			oldPosition.copy( position );

			point = ( this.points.length - 1 ) * index;
			intPoint = Math.floor( point );

			if ( intPoint !== oldIntPoint ) {

				chunkLengths[ intPoint ] = totalLength;
				oldIntPoint = intPoint;

			}

		}

		// last point ends with total length

		chunkLengths[ chunkLengths.length ] = totalLength;

		return { chunks: chunkLengths, total: totalLength };

	};

	this.reparametrizeByArcLength = function ( samplingCoef ) {

		var i, j,
			index, indexCurrent, indexNext,
			realDistance,
			sampling, position,
			newpoints = [],
			tmpVec = new THREE.Vector3(),
			sl = this.getLength();

		newpoints.push( tmpVec.copy( this.points[ 0 ] ).clone() );

		for ( i = 1; i < this.points.length; i ++ ) {

			//tmpVec.copy( this.points[ i - 1 ] );
			//linearDistance = tmpVec.distanceTo( this.points[ i ] );

			realDistance = sl.chunks[ i ] - sl.chunks[ i - 1 ];

			sampling = Math.ceil( samplingCoef * realDistance / sl.total );

			indexCurrent = ( i - 1 ) / ( this.points.length - 1 );
			indexNext = i / ( this.points.length - 1 );

			for ( j = 1; j < sampling - 1; j ++ ) {

				index = indexCurrent + j * ( 1 / sampling ) * ( indexNext - indexCurrent );

				position = this.getPoint( index );
				newpoints.push( tmpVec.copy( position ).clone() );

			}

			newpoints.push( tmpVec.copy( this.points[ i ] ).clone() );

		}

		this.points = newpoints;

	};

	// Catmull-Rom

	function interpolate( p0, p1, p2, p3, t, t2, t3 ) {

		var v0 = ( p2 - p0 ) * 0.5,
			v1 = ( p3 - p1 ) * 0.5;

		return ( 2 * ( p1 - p2 ) + v0 + v1 ) * t3 + ( - 3 * ( p1 - p2 ) - 2 * v0 - v1 ) * t2 + v0 * t + p1;

	}

};

// File:src/math/Triangle.js

/**
 * @author bhouston / http://clara.io
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Triangle = function ( a, b, c ) {

	this.a = ( a !== undefined ) ? a : new THREE.Vector3();
	this.b = ( b !== undefined ) ? b : new THREE.Vector3();
	this.c = ( c !== undefined ) ? c : new THREE.Vector3();

};

THREE.Triangle.normal = function () {

	var v0 = new THREE.Vector3();

	return function ( a, b, c, optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();

		result.subVectors( c, b );
		v0.subVectors( a, b );
		result.cross( v0 );

		var resultLengthSq = result.lengthSq();
		if ( resultLengthSq > 0 ) {

			return result.multiplyScalar( 1 / Math.sqrt( resultLengthSq ) );

		}

		return result.set( 0, 0, 0 );

	};

}();

// static/instance method to calculate barycentric coordinates
// based on: http://www.blackpawn.com/texts/pointinpoly/default.html
THREE.Triangle.barycoordFromPoint = function () {

	var v0 = new THREE.Vector3();
	var v1 = new THREE.Vector3();
	var v2 = new THREE.Vector3();

	return function ( point, a, b, c, optionalTarget ) {

		v0.subVectors( c, a );
		v1.subVectors( b, a );
		v2.subVectors( point, a );

		var dot00 = v0.dot( v0 );
		var dot01 = v0.dot( v1 );
		var dot02 = v0.dot( v2 );
		var dot11 = v1.dot( v1 );
		var dot12 = v1.dot( v2 );

		var denom = ( dot00 * dot11 - dot01 * dot01 );

		var result = optionalTarget || new THREE.Vector3();

		// collinear or singular triangle
		if ( denom === 0 ) {

			// arbitrary location outside of triangle?
			// not sure if this is the best idea, maybe should be returning undefined
			return result.set( - 2, - 1, - 1 );

		}

		var invDenom = 1 / denom;
		var u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;
		var v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;

		// barycentric coordinates must always sum to 1
		return result.set( 1 - u - v, v, u );

	};

}();

THREE.Triangle.containsPoint = function () {

	var v1 = new THREE.Vector3();

	return function ( point, a, b, c ) {

		var result = THREE.Triangle.barycoordFromPoint( point, a, b, c, v1 );

		return ( result.x >= 0 ) && ( result.y >= 0 ) && ( ( result.x + result.y ) <= 1 );

	};

}();

THREE.Triangle.prototype = {

	constructor: THREE.Triangle,

	set: function ( a, b, c ) {

		this.a.copy( a );
		this.b.copy( b );
		this.c.copy( c );

		return this;

	},

	setFromPointsAndIndices: function ( points, i0, i1, i2 ) {

		this.a.copy( points[ i0 ] );
		this.b.copy( points[ i1 ] );
		this.c.copy( points[ i2 ] );

		return this;

	},

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( triangle ) {

		this.a.copy( triangle.a );
		this.b.copy( triangle.b );
		this.c.copy( triangle.c );

		return this;

	},

	area: function () {

		var v0 = new THREE.Vector3();
		var v1 = new THREE.Vector3();

		return function () {

			v0.subVectors( this.c, this.b );
			v1.subVectors( this.a, this.b );

			return v0.cross( v1 ).length() * 0.5;

		};

	}(),

	midpoint: function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();
		return result.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );

	},

	normal: function ( optionalTarget ) {

		return THREE.Triangle.normal( this.a, this.b, this.c, optionalTarget );

	},

	plane: function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Plane();

		return result.setFromCoplanarPoints( this.a, this.b, this.c );

	},

	barycoordFromPoint: function ( point, optionalTarget ) {

		return THREE.Triangle.barycoordFromPoint( point, this.a, this.b, this.c, optionalTarget );

	},

	containsPoint: function ( point ) {

		return THREE.Triangle.containsPoint( point, this.a, this.b, this.c );

	},

	equals: function ( triangle ) {

		return triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );

	}

};

// File:src/math/Interpolant.js

/**
 * Abstract base class of interpolants over parametric samples.
 *
 * The parameter domain is one dimensional, typically the time or a path
 * along a curve defined by the data.
 *
 * The sample values can have any dimensionality and derived classes may
 * apply special interpretations to the data.
 *
 * This class provides the interval seek in a Template Method, deferring
 * the actual interpolation to derived classes.
 *
 * Time complexity is O(1) for linear access crossing at most two points
 * and O(log N) for random access, where N is the number of positions.
 *
 * References:
 *
 * 		http://www.oodesign.com/template-method-pattern.html
 *
 * @author tschw
 */

THREE.Interpolant = function(
		parameterPositions, sampleValues, sampleSize, resultBuffer ) {

	this.parameterPositions = parameterPositions;
	this._cachedIndex = 0;

	this.resultBuffer = resultBuffer !== undefined ?
			resultBuffer : new sampleValues.constructor( sampleSize );
	this.sampleValues = sampleValues;
	this.valueSize = sampleSize;

};

THREE.Interpolant.prototype = {

	constructor: THREE.Interpolant,

	evaluate: function( t ) {

		var pp = this.parameterPositions,
			i1 = this._cachedIndex,

			t1 = pp[   i1   ],
			t0 = pp[ i1 - 1 ];

		validate_interval: {

			seek: {

				var right;

				linear_scan: {
//- See http://jsperf.com/comparison-to-undefined/3
//- slower code:
//-
//- 				if ( t >= t1 || t1 === undefined ) {
					forward_scan: if ( ! ( t < t1 ) ) {

						for ( var giveUpAt = i1 + 2; ;) {

							if ( t1 === undefined ) {

								if ( t < t0 ) break forward_scan;

								// after end

								i1 = pp.length;
								this._cachedIndex = i1;
								return this.afterEnd_( i1 - 1, t, t0 );

							}

							if ( i1 === giveUpAt ) break; // this loop

							t0 = t1;
							t1 = pp[ ++ i1 ];

							if ( t < t1 ) {

								// we have arrived at the sought interval
								break seek;

							}

						}

						// prepare binary search on the right side of the index
						right = pp.length;
						break linear_scan;

					}

//- slower code:
//-					if ( t < t0 || t0 === undefined ) {
					if ( ! ( t >= t0 ) ) {

						// looping?

						var t1global = pp[ 1 ];

						if ( t < t1global ) {

							i1 = 2; // + 1, using the scan for the details
							t0 = t1global;

						}

						// linear reverse scan

						for ( var giveUpAt = i1 - 2; ;) {

							if ( t0 === undefined ) {

								// before start

								this._cachedIndex = 0;
								return this.beforeStart_( 0, t, t1 );

							}

							if ( i1 === giveUpAt ) break; // this loop

							t1 = t0;
							t0 = pp[ -- i1 - 1 ];

							if ( t >= t0 ) {

								// we have arrived at the sought interval
								break seek;

							}

						}

						// prepare binary search on the left side of the index
						right = i1;
						i1 = 0;
						break linear_scan;

					}

					// the interval is valid

					break validate_interval;

				} // linear scan

				// binary search

				while ( i1 < right ) {

					var mid = ( i1 + right ) >>> 1;

					if ( t < pp[ mid ] ) {

						right = mid;

					} else {

						i1 = mid + 1;

					}

				}

				t1 = pp[   i1   ];
				t0 = pp[ i1 - 1 ];

				// check boundary cases, again

				if ( t0 === undefined ) {

					this._cachedIndex = 0;
					return this.beforeStart_( 0, t, t1 );

				}

				if ( t1 === undefined ) {

					i1 = pp.length;
					this._cachedIndex = i1;
					return this.afterEnd_( i1 - 1, t0, t );

				}

			} // seek

			this._cachedIndex = i1;

			this.intervalChanged_( i1, t0, t1 );

		} // validate_interval

		return this.interpolate_( i1, t0, t, t1 );

	},

	settings: null, // optional, subclass-specific settings structure
	// Note: The indirection allows central control of many interpolants.

	// --- Protected interface

	DefaultSettings_: {},

	getSettings_: function() {

		return this.settings || this.DefaultSettings_;

	},

	copySampleValue_: function( index ) {

		// copies a sample value to the result buffer

		var result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,
			offset = index * stride;

		for ( var i = 0; i !== stride; ++ i ) {

			result[ i ] = values[ offset + i ];

		}

		return result;

	},

	// Template methods for derived classes:

	interpolate_: function( i1, t0, t, t1 ) {

		throw new Error( "call to abstract method" );
		// implementations shall return this.resultBuffer

	},

	intervalChanged_: function( i1, t0, t1 ) {

		// empty

	}

};

Object.assign( THREE.Interpolant.prototype, {

	beforeStart_: //( 0, t, t0 ), returns this.resultBuffer
		THREE.Interpolant.prototype.copySampleValue_,

	afterEnd_: //( N-1, tN-1, t ), returns this.resultBuffer
		THREE.Interpolant.prototype.copySampleValue_

} );

// File:src/math/interpolants/CubicInterpolant.js

/**
 * Fast and simple cubic spline interpolant.
 *
 * It was derived from a Hermitian construction setting the first derivative
 * at each sample position to the linear slope between neighboring positions
 * over their parameter interval.
 *
 * @author tschw
 */

THREE.CubicInterpolant = function(
		parameterPositions, sampleValues, sampleSize, resultBuffer ) {

	THREE.Interpolant.call(
			this, parameterPositions, sampleValues, sampleSize, resultBuffer );

	this._weightPrev = -0;
	this._offsetPrev = -0;
	this._weightNext = -0;
	this._offsetNext = -0;

};

THREE.CubicInterpolant.prototype =
		Object.assign( Object.create( THREE.Interpolant.prototype ), {

	constructor: THREE.CubicInterpolant,

	DefaultSettings_: {

		endingStart: 	THREE.ZeroCurvatureEnding,
		endingEnd:		THREE.ZeroCurvatureEnding

	},

	intervalChanged_: function( i1, t0, t1 ) {

		var pp = this.parameterPositions,
			iPrev = i1 - 2,
			iNext = i1 + 1,

			tPrev = pp[ iPrev ],
			tNext = pp[ iNext ];

		if ( tPrev === undefined ) {

			switch ( this.getSettings_().endingStart ) {

				case THREE.ZeroSlopeEnding:

					// f'(t0) = 0
					iPrev = i1;
					tPrev = 2 * t0 - t1;

					break;

				case THREE.WrapAroundEnding:

					// use the other end of the curve
					iPrev = pp.length - 2;
					tPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];

					break;

				default: // ZeroCurvatureEnding

					// f''(t0) = 0 a.k.a. Natural Spline
					iPrev = i1;
					tPrev = t1;

			}

		}

		if ( tNext === undefined ) {

			switch ( this.getSettings_().endingEnd ) {

				case THREE.ZeroSlopeEnding:

					// f'(tN) = 0
					iNext = i1;
					tNext = 2 * t1 - t0;

					break;

				case THREE.WrapAroundEnding:

					// use the other end of the curve
					iNext = 1;
					tNext = t1 + pp[ 1 ] - pp[ 0 ];

					break;

				default: // ZeroCurvatureEnding

					// f''(tN) = 0, a.k.a. Natural Spline
					iNext = i1 - 1;
					tNext = t0;

			}

		}

		var halfDt = ( t1 - t0 ) * 0.5,
			stride = this.valueSize;

		this._weightPrev = halfDt / ( t0 - tPrev );
		this._weightNext = halfDt / ( tNext - t1 );
		this._offsetPrev = iPrev * stride;
		this._offsetNext = iNext * stride;

	},

	interpolate_: function( i1, t0, t, t1 ) {

		var result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,

			o1 = i1 * stride,		o0 = o1 - stride,
			oP = this._offsetPrev, 	oN = this._offsetNext,
			wP = this._weightPrev,	wN = this._weightNext,

			p = ( t - t0 ) / ( t1 - t0 ),
			pp = p * p,
			ppp = pp * p;

		// evaluate polynomials

		var sP =     - wP   * ppp   +         2 * wP    * pp    -          wP   * p;
		var s0 = ( 1 + wP ) * ppp   + (-1.5 - 2 * wP )  * pp    + ( -0.5 + wP ) * p     + 1;
		var s1 = (-1 - wN ) * ppp   + ( 1.5 +   wN   )  * pp    +    0.5        * p;
		var sN =       wN   * ppp   -           wN      * pp;

		// combine data linearly

		for ( var i = 0; i !== stride; ++ i ) {

			result[ i ] =
					sP * values[ oP + i ] +
					s0 * values[ o0 + i ] +
					s1 * values[ o1 + i ] +
					sN * values[ oN + i ];

		}

		return result;

	}

} );

// File:src/math/interpolants/DiscreteInterpolant.js

/**
 *
 * Interpolant that evaluates to the sample value at the position preceeding
 * the parameter.
 *
 * @author tschw
 */

THREE.DiscreteInterpolant = function(
		parameterPositions, sampleValues, sampleSize, resultBuffer ) {

	THREE.Interpolant.call(
			this, parameterPositions, sampleValues, sampleSize, resultBuffer );

};

THREE.DiscreteInterpolant.prototype =
		Object.assign( Object.create( THREE.Interpolant.prototype ), {

	constructor: THREE.DiscreteInterpolant,

	interpolate_: function( i1, t0, t, t1 ) {

		return this.copySampleValue_( i1 - 1 );

	}

} );

// File:src/math/interpolants/LinearInterpolant.js

/**
 * @author tschw
 */

THREE.LinearInterpolant = function(
		parameterPositions, sampleValues, sampleSize, resultBuffer ) {

	THREE.Interpolant.call(
			this, parameterPositions, sampleValues, sampleSize, resultBuffer );

};

THREE.LinearInterpolant.prototype =
		Object.assign( Object.create( THREE.Interpolant.prototype ), {

	constructor: THREE.LinearInterpolant,

	interpolate_: function( i1, t0, t, t1 ) {

		var result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,

			offset1 = i1 * stride,
			offset0 = offset1 - stride,

			weight1 = ( t - t0 ) / ( t1 - t0 ),
			weight0 = 1 - weight1;

		for ( var i = 0; i !== stride; ++ i ) {

			result[ i ] =
					values[ offset0 + i ] * weight0 +
					values[ offset1 + i ] * weight1;

		}

		return result;

	}

} );

// File:src/math/interpolants/QuaternionLinearInterpolant.js

/**
 * Spherical linear unit quaternion interpolant.
 *
 * @author tschw
 */

THREE.QuaternionLinearInterpolant = function(
		parameterPositions, sampleValues, sampleSize, resultBuffer ) {

	THREE.Interpolant.call(
			this, parameterPositions, sampleValues, sampleSize, resultBuffer );

};

THREE.QuaternionLinearInterpolant.prototype =
		Object.assign( Object.create( THREE.Interpolant.prototype ), {

	constructor: THREE.QuaternionLinearInterpolant,

	interpolate_: function( i1, t0, t, t1 ) {

		var result = this.resultBuffer,
			values = this.sampleValues,
			stride = this.valueSize,

			offset = i1 * stride,

			alpha = ( t - t0 ) / ( t1 - t0 );

		for ( var end = offset + stride; offset !== end; offset += 4 ) {

			THREE.Quaternion.slerpFlat( result, 0,
					values, offset - stride, values, offset, alpha );

		}

		return result;

	}

} );

// File:src/core/Clock.js

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Clock = function ( autoStart ) {

	this.autoStart = ( autoStart !== undefined ) ? autoStart : true;

	this.startTime = 0;
	this.oldTime = 0;
	this.elapsedTime = 0;

	this.running = false;

};

THREE.Clock.prototype = {

	constructor: THREE.Clock,

	start: function () {

		this.startTime = performance.now();

		this.oldTime = this.startTime;
		this.running = true;

	},

	stop: function () {

		this.getElapsedTime();
		this.running = false;

	},

	getElapsedTime: function () {

		this.getDelta();
		return this.elapsedTime;

	},

	getDelta: function () {

		var diff = 0;

		if ( this.autoStart && ! this.running ) {

			this.start();

		}

		if ( this.running ) {

			var newTime = performance.now();

			diff = 0.001 * ( newTime - this.oldTime );
			this.oldTime = newTime;

			this.elapsedTime += diff;

		}

		return diff;

	}

};

// File:src/core/EventDispatcher.js

/**
 * https://github.com/mrdoob/eventdispatcher.js/
 */

THREE.EventDispatcher = function () {};

THREE.EventDispatcher.prototype = {

	constructor: THREE.EventDispatcher,

	apply: function ( object ) {

		object.addEventListener = THREE.EventDispatcher.prototype.addEventListener;
		object.hasEventListener = THREE.EventDispatcher.prototype.hasEventListener;
		object.removeEventListener = THREE.EventDispatcher.prototype.removeEventListener;
		object.dispatchEvent = THREE.EventDispatcher.prototype.dispatchEvent;

	},

	addEventListener: function ( type, listener ) {

		if ( this._listeners === undefined ) this._listeners = {};

		var listeners = this._listeners;

		if ( listeners[ type ] === undefined ) {

			listeners[ type ] = [];

		}

		if ( listeners[ type ].indexOf( listener ) === - 1 ) {

			listeners[ type ].push( listener );

		}

	},

	hasEventListener: function ( type, listener ) {

		if ( this._listeners === undefined ) return false;

		var listeners = this._listeners;

		if ( listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1 ) {

			return true;

		}

		return false;

	},

	removeEventListener: function ( type, listener ) {

		if ( this._listeners === undefined ) return;

		var listeners = this._listeners;
		var listenerArray = listeners[ type ];

		if ( listenerArray !== undefined ) {

			var index = listenerArray.indexOf( listener );

			if ( index !== - 1 ) {

				listenerArray.splice( index, 1 );

			}

		}

	},

	dispatchEvent: function ( event ) {

		if ( this._listeners === undefined ) return;

		var listeners = this._listeners;
		var listenerArray = listeners[ event.type ];

		if ( listenerArray !== undefined ) {

			event.target = this;

			var array = [];
			var length = listenerArray.length;

			for ( var i = 0; i < length; i ++ ) {

				array[ i ] = listenerArray[ i ];

			}

			for ( var i = 0; i < length; i ++ ) {

				array[ i ].call( this, event );

			}

		}

	}

};

// File:src/core/Layers.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Layers = function () {

	this.mask = 1;

};

THREE.Layers.prototype = {

	constructor: THREE.Layers,

	set: function ( channel ) {

		this.mask = 1 << channel;

	},

	enable: function ( channel ) {

		this.mask |= 1 << channel;

	},

	toggle: function ( channel ) {

		this.mask ^= 1 << channel;

	},

	disable: function ( channel ) {

		this.mask &= ~ ( 1 << channel );

	},

	test: function ( layers ) {

		return ( this.mask & layers.mask ) !== 0;

	}

};

// File:src/core/Raycaster.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author bhouston / http://clara.io/
 * @author stephomi / http://stephaneginier.com/
 */

( function ( THREE ) {

	THREE.Raycaster = function ( origin, direction, near, far ) {

		this.ray = new THREE.Ray( origin, direction );
		// direction is assumed to be normalized (for accurate distance calculations)

		this.near = near || 0;
		this.far = far || Infinity;

		this.params = {
			Mesh: {},
			Line: {},
			LOD: {},
			Points: { threshold: 1 },
			Sprite: {}
		};

		Object.defineProperties( this.params, {
			PointCloud: {
				get: function () {
					console.warn( 'THREE.Raycaster: params.PointCloud has been renamed to params.Points.' );
					return this.Points;
				}
			}
		} );

	};

	function ascSort( a, b ) {

		return a.distance - b.distance;

	}

	function intersectObject( object, raycaster, intersects, recursive ) {

		if ( object.visible === false ) return;

		object.raycast( raycaster, intersects );

		if ( recursive === true ) {

			var children = object.children;

			for ( var i = 0, l = children.length; i < l; i ++ ) {

				intersectObject( children[ i ], raycaster, intersects, true );

			}

		}

	}

	//

	THREE.Raycaster.prototype = {

		constructor: THREE.Raycaster,

		linePrecision: 1,

		set: function ( origin, direction ) {

			// direction is assumed to be normalized (for accurate distance calculations)

			this.ray.set( origin, direction );

		},

		setFromCamera: function ( coords, camera ) {

			if ( camera instanceof THREE.PerspectiveCamera ) {

				this.ray.origin.setFromMatrixPosition( camera.matrixWorld );
				this.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();

			} else if ( camera instanceof THREE.OrthographicCamera ) {

				this.ray.origin.set( coords.x, coords.y, - 1 ).unproject( camera );
				this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );

			} else {

				console.error( 'THREE.Raycaster: Unsupported camera type.' );

			}

		},

		intersectObject: function ( object, recursive ) {

			var intersects = [];

			intersectObject( object, this, intersects, recursive );

			intersects.sort( ascSort );

			return intersects;

		},

		intersectObjects: function ( objects, recursive ) {

			var intersects = [];

			if ( Array.isArray( objects ) === false ) {

				console.warn( 'THREE.Raycaster.intersectObjects: objects is not an Array.' );
				return intersects;

			}

			for ( var i = 0, l = objects.length; i < l; i ++ ) {

				intersectObject( objects[ i ], this, intersects, recursive );

			}

			intersects.sort( ascSort );

			return intersects;

		}

	};

}( THREE ) );

// File:src/core/Object3D.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author mikael emtinger / http://gomo.se/
 * @author alteredq / http://alteredqualia.com/
 * @author WestLangley / http://github.com/WestLangley
 * @author elephantatwork / www.elephantatwork.ch
 */

THREE.Object3D = function () {

	Object.defineProperty( this, 'id', { value: THREE.Object3DIdCount ++ } );

	this.uuid = THREE.Math.generateUUID();

	this.name = '';
	this.type = 'Object3D';

	this.parent = null;
	this.children = [];

	this.up = THREE.Object3D.DefaultUp.clone();

	var position = new THREE.Vector3();
	var rotation = new THREE.Euler();
	var quaternion = new THREE.Quaternion();
	var scale = new THREE.Vector3( 1, 1, 1 );

	function onRotationChange() {

		quaternion.setFromEuler( rotation, false );

	}

	function onQuaternionChange() {

		rotation.setFromQuaternion( quaternion, undefined, false );

	}

	rotation.onChange( onRotationChange );
	quaternion.onChange( onQuaternionChange );

	Object.defineProperties( this, {
		position: {
			enumerable: true,
			value: position
		},
		rotation: {
			enumerable: true,
			value: rotation
		},
		quaternion: {
			enumerable: true,
			value: quaternion
		},
		scale: {
			enumerable: true,
			value: scale
		},
		modelViewMatrix: {
			value: new THREE.Matrix4()
		},
		normalMatrix: {
			value: new THREE.Matrix3()
		}
	} );

	this.rotationAutoUpdate = true;

	this.matrix = new THREE.Matrix4();
	this.matrixWorld = new THREE.Matrix4();

	this.matrixAutoUpdate = THREE.Object3D.DefaultMatrixAutoUpdate;
	this.matrixWorldNeedsUpdate = false;

	this.layers = new THREE.Layers();
	this.visible = true;

	this.castShadow = false;
	this.receiveShadow = false;

	this.frustumCulled = true;
	this.renderOrder = 0;

	this.userData = {};

};

THREE.Object3D.DefaultUp = new THREE.Vector3( 0, 1, 0 );
THREE.Object3D.DefaultMatrixAutoUpdate = true;

THREE.Object3D.prototype = {

	constructor: THREE.Object3D,

	applyMatrix: function ( matrix ) {

		this.matrix.multiplyMatrices( matrix, this.matrix );

		this.matrix.decompose( this.position, this.quaternion, this.scale );

	},

	setRotationFromAxisAngle: function ( axis, angle ) {

		// assumes axis is normalized

		this.quaternion.setFromAxisAngle( axis, angle );

	},

	setRotationFromEuler: function ( euler ) {

		this.quaternion.setFromEuler( euler, true );

	},

	setRotationFromMatrix: function ( m ) {

		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)

		this.quaternion.setFromRotationMatrix( m );

	},

	setRotationFromQuaternion: function ( q ) {

		// assumes q is normalized

		this.quaternion.copy( q );

	},

	rotateOnAxis: function () {

		// rotate object on axis in object space
		// axis is assumed to be normalized

		var q1 = new THREE.Quaternion();

		return function ( axis, angle ) {

			q1.setFromAxisAngle( axis, angle );

			this.quaternion.multiply( q1 );

			return this;

		};

	}(),

	rotateX: function () {

		var v1 = new THREE.Vector3( 1, 0, 0 );

		return function ( angle ) {

			return this.rotateOnAxis( v1, angle );

		};

	}(),

	rotateY: function () {

		var v1 = new THREE.Vector3( 0, 1, 0 );

		return function ( angle ) {

			return this.rotateOnAxis( v1, angle );

		};

	}(),

	rotateZ: function () {

		var v1 = new THREE.Vector3( 0, 0, 1 );

		return function ( angle ) {

			return this.rotateOnAxis( v1, angle );

		};

	}(),

	translateOnAxis: function () {

		// translate object by distance along axis in object space
		// axis is assumed to be normalized

		var v1 = new THREE.Vector3();

		return function ( axis, distance ) {

			v1.copy( axis ).applyQuaternion( this.quaternion );

			this.position.add( v1.multiplyScalar( distance ) );

			return this;

		};

	}(),

	translateX: function () {

		var v1 = new THREE.Vector3( 1, 0, 0 );

		return function ( distance ) {

			return this.translateOnAxis( v1, distance );

		};

	}(),

	translateY: function () {

		var v1 = new THREE.Vector3( 0, 1, 0 );

		return function ( distance ) {

			return this.translateOnAxis( v1, distance );

		};

	}(),

	translateZ: function () {

		var v1 = new THREE.Vector3( 0, 0, 1 );

		return function ( distance ) {

			return this.translateOnAxis( v1, distance );

		};

	}(),

	localToWorld: function ( vector ) {

		return vector.applyMatrix4( this.matrixWorld );

	},

	worldToLocal: function () {

		var m1 = new THREE.Matrix4();

		return function ( vector ) {

			return vector.applyMatrix4( m1.getInverse( this.matrixWorld ) );

		};

	}(),

	lookAt: function () {

		// This routine does not support objects with rotated and/or translated parent(s)

		var m1 = new THREE.Matrix4();

		return function ( vector ) {

			m1.lookAt( vector, this.position, this.up );

			this.quaternion.setFromRotationMatrix( m1 );

		};

	}(),

	add: function ( object ) {

		if ( arguments.length > 1 ) {

			for ( var i = 0; i < arguments.length; i ++ ) {

				this.add( arguments[ i ] );

			}

			return this;

		}

		if ( object === this ) {

			console.error( "THREE.Object3D.add: object can't be added as a child of itself.", object );
			return this;

		}

		if ( object instanceof THREE.Object3D ) {

			if ( object.parent !== null ) {

				object.parent.remove( object );

			}

			object.parent = this;
			object.dispatchEvent( { type: 'added' } );

			this.children.push( object );

		} else {

			console.error( "THREE.Object3D.add: object not an instance of THREE.Object3D.", object );

		}

		return this;

	},

	remove: function ( object ) {

		if ( arguments.length > 1 ) {

			for ( var i = 0; i < arguments.length; i ++ ) {

				this.remove( arguments[ i ] );

			}

		}

		var index = this.children.indexOf( object );

		if ( index !== - 1 ) {

			object.parent = null;

			object.dispatchEvent( { type: 'removed' } );

			this.children.splice( index, 1 );

		}

	},

	getObjectById: function ( id ) {

		return this.getObjectByProperty( 'id', id );

	},

	getObjectByName: function ( name ) {

		return this.getObjectByProperty( 'name', name );

	},

	getObjectByProperty: function ( name, value ) {

		if ( this[ name ] === value ) return this;

		for ( var i = 0, l = this.children.length; i < l; i ++ ) {

			var child = this.children[ i ];
			var object = child.getObjectByProperty( name, value );

			if ( object !== undefined ) {

				return object;

			}

		}

		return undefined;

	},

	getWorldPosition: function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();

		this.updateMatrixWorld( true );

		return result.setFromMatrixPosition( this.matrixWorld );

	},

	getWorldQuaternion: function () {

		var position = new THREE.Vector3();
		var scale = new THREE.Vector3();

		return function ( optionalTarget ) {

			var result = optionalTarget || new THREE.Quaternion();

			this.updateMatrixWorld( true );

			this.matrixWorld.decompose( position, result, scale );

			return result;

		};

	}(),

	getWorldRotation: function () {

		var quaternion = new THREE.Quaternion();

		return function ( optionalTarget ) {

			var result = optionalTarget || new THREE.Euler();

			this.getWorldQuaternion( quaternion );

			return result.setFromQuaternion( quaternion, this.rotation.order, false );

		};

	}(),

	getWorldScale: function () {

		var position = new THREE.Vector3();
		var quaternion = new THREE.Quaternion();

		return function ( optionalTarget ) {

			var result = optionalTarget || new THREE.Vector3();

			this.updateMatrixWorld( true );

			this.matrixWorld.decompose( position, quaternion, result );

			return result;

		};

	}(),

	getWorldDirection: function () {

		var quaternion = new THREE.Quaternion();

		return function ( optionalTarget ) {

			var result = optionalTarget || new THREE.Vector3();

			this.getWorldQuaternion( quaternion );

			return result.set( 0, 0, 1 ).applyQuaternion( quaternion );

		};

	}(),

	raycast: function () {},

	traverse: function ( callback ) {

		callback( this );

		var children = this.children;

		for ( var i = 0, l = children.length; i < l; i ++ ) {

			children[ i ].traverse( callback );

		}

	},

	traverseVisible: function ( callback ) {

		if ( this.visible === false ) return;

		callback( this );

		var children = this.children;

		for ( var i = 0, l = children.length; i < l; i ++ ) {

			children[ i ].traverseVisible( callback );

		}

	},

	traverseAncestors: function ( callback ) {

		var parent = this.parent;

		if ( parent !== null ) {

			callback( parent );

			parent.traverseAncestors( callback );

		}

	},

	updateMatrix: function () {

		this.matrix.compose( this.position, this.quaternion, this.scale );

		this.matrixWorldNeedsUpdate = true;

	},

	updateMatrixWorld: function ( force ) {

		if ( this.matrixAutoUpdate === true ) this.updateMatrix();

		if ( this.matrixWorldNeedsUpdate === true || force === true ) {

			if ( this.parent === null ) {

				this.matrixWorld.copy( this.matrix );

			} else {

				this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

			}

			this.matrixWorldNeedsUpdate = false;

			force = true;

		}

		// update children

		for ( var i = 0, l = this.children.length; i < l; i ++ ) {

			this.children[ i ].updateMatrixWorld( force );

		}

	},

	toJSON: function ( meta ) {

		var isRootObject = ( meta === undefined );

		var output = {};

		// meta is a hash used to collect geometries, materials.
		// not providing it implies that this is the root object
		// being serialized.
		if ( isRootObject ) {

			// initialize meta obj
			meta = {
				geometries: {},
				materials: {},
				textures: {},
				images: {}
			};

			output.metadata = {
				version: 4.4,
				type: 'Object',
				generator: 'Object3D.toJSON'
			};

		}

		// standard Object3D serialization

		var object = {};

		object.uuid = this.uuid;
		object.type = this.type;

		if ( this.name !== '' ) object.name = this.name;
		if ( JSON.stringify( this.userData ) !== '{}' ) object.userData = this.userData;
		if ( this.castShadow === true ) object.castShadow = true;
		if ( this.receiveShadow === true ) object.receiveShadow = true;
		if ( this.visible === false ) object.visible = false;

		object.matrix = this.matrix.toArray();

		//

		if ( this.geometry !== undefined ) {

			if ( meta.geometries[ this.geometry.uuid ] === undefined ) {

				meta.geometries[ this.geometry.uuid ] = this.geometry.toJSON( meta );

			}

			object.geometry = this.geometry.uuid;

		}

		if ( this.material !== undefined ) {

			if ( meta.materials[ this.material.uuid ] === undefined ) {

				meta.materials[ this.material.uuid ] = this.material.toJSON( meta );

			}

			object.material = this.material.uuid;

		}

		//

		if ( this.children.length > 0 ) {

			object.children = [];

			for ( var i = 0; i < this.children.length; i ++ ) {

				object.children.push( this.children[ i ].toJSON( meta ).object );

			}

		}

		if ( isRootObject ) {

			var geometries = extractFromCache( meta.geometries );
			var materials = extractFromCache( meta.materials );
			var textures = extractFromCache( meta.textures );
			var images = extractFromCache( meta.images );

			if ( geometries.length > 0 ) output.geometries = geometries;
			if ( materials.length > 0 ) output.materials = materials;
			if ( textures.length > 0 ) output.textures = textures;
			if ( images.length > 0 ) output.images = images;

		}

		output.object = object;

		return output;

		// extract data from the cache hash
		// remove metadata on each item
		// and return as array
		function extractFromCache ( cache ) {

			var values = [];
			for ( var key in cache ) {

				var data = cache[ key ];
				delete data.metadata;
				values.push( data );

			}
			return values;

		}

	},

	clone: function ( recursive ) {

		return new this.constructor().copy( this, recursive );

	},

	copy: function ( source, recursive ) {

		if ( recursive === undefined ) recursive = true;

		this.name = source.name;

		this.up.copy( source.up );

		this.position.copy( source.position );
		this.quaternion.copy( source.quaternion );
		this.scale.copy( source.scale );

		this.rotationAutoUpdate = source.rotationAutoUpdate;

		this.matrix.copy( source.matrix );
		this.matrixWorld.copy( source.matrixWorld );

		this.matrixAutoUpdate = source.matrixAutoUpdate;
		this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;

		this.visible = source.visible;

		this.castShadow = source.castShadow;
		this.receiveShadow = source.receiveShadow;

		this.frustumCulled = source.frustumCulled;
		this.renderOrder = source.renderOrder;

		this.userData = JSON.parse( JSON.stringify( source.userData ) );

		if ( recursive === true ) {

			for ( var i = 0; i < source.children.length; i ++ ) {

				var child = source.children[ i ];
				this.add( child.clone() );

			}

		}

		return this;

	}

};

THREE.EventDispatcher.prototype.apply( THREE.Object3D.prototype );

THREE.Object3DIdCount = 0;

// File:src/core/Face3.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Face3 = function ( a, b, c, normal, color, materialIndex ) {

	this.a = a;
	this.b = b;
	this.c = c;

	this.normal = normal instanceof THREE.Vector3 ? normal : new THREE.Vector3();
	this.vertexNormals = Array.isArray( normal ) ? normal : [];

	this.color = color instanceof THREE.Color ? color : new THREE.Color();
	this.vertexColors = Array.isArray( color ) ? color : [];

	this.materialIndex = materialIndex !== undefined ? materialIndex : 0;

};

THREE.Face3.prototype = {

	constructor: THREE.Face3,

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( source ) {

		this.a = source.a;
		this.b = source.b;
		this.c = source.c;

		this.normal.copy( source.normal );
		this.color.copy( source.color );

		this.materialIndex = source.materialIndex;

		for ( var i = 0, il = source.vertexNormals.length; i < il; i ++ ) {

			this.vertexNormals[ i ] = source.vertexNormals[ i ].clone();

		}

		for ( var i = 0, il = source.vertexColors.length; i < il; i ++ ) {

			this.vertexColors[ i ] = source.vertexColors[ i ].clone();

		}

		return this;

	}

};

// File:src/core/BufferAttribute.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.BufferAttribute = function ( array, itemSize ) {

	this.uuid = THREE.Math.generateUUID();

	this.array = array;
	this.itemSize = itemSize;

	this.dynamic = false;
	this.updateRange = { offset: 0, count: - 1 };

	this.version = 0;

};

THREE.BufferAttribute.prototype = {

	constructor: THREE.BufferAttribute,

	get count() {

		return this.array.length / this.itemSize;

	},

	set needsUpdate( value ) {

		if ( value === true ) this.version ++;

	},

	setDynamic: function ( value ) {

		this.dynamic = value;

		return this;

	},

	copy: function ( source ) {

		this.array = new source.array.constructor( source.array );
		this.itemSize = source.itemSize;

		this.dynamic = source.dynamic;

		return this;

	},

	copyAt: function ( index1, attribute, index2 ) {

		index1 *= this.itemSize;
		index2 *= attribute.itemSize;

		for ( var i = 0, l = this.itemSize; i < l; i ++ ) {

			this.array[ index1 + i ] = attribute.array[ index2 + i ];

		}

		return this;

	},

	copyArray: function ( array ) {

		this.array.set( array );

		return this;

	},

	copyColorsArray: function ( colors ) {

		var array = this.array, offset = 0;

		for ( var i = 0, l = colors.length; i < l; i ++ ) {

			var color = colors[ i ];

			if ( color === undefined ) {

				console.warn( 'THREE.BufferAttribute.copyColorsArray(): color is undefined', i );
				color = new THREE.Color();

			}

			array[ offset ++ ] = color.r;
			array[ offset ++ ] = color.g;
			array[ offset ++ ] = color.b;

		}

		return this;

	},

	copyIndicesArray: function ( indices ) {

		var array = this.array, offset = 0;

		for ( var i = 0, l = indices.length; i < l; i ++ ) {

			var index = indices[ i ];

			array[ offset ++ ] = index.a;
			array[ offset ++ ] = index.b;
			array[ offset ++ ] = index.c;

		}

		return this;

	},

	copyVector2sArray: function ( vectors ) {

		var array = this.array, offset = 0;

		for ( var i = 0, l = vectors.length; i < l; i ++ ) {

			var vector = vectors[ i ];

			if ( vector === undefined ) {

				console.warn( 'THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i );
				vector = new THREE.Vector2();

			}

			array[ offset ++ ] = vector.x;
			array[ offset ++ ] = vector.y;

		}

		return this;

	},

	copyVector3sArray: function ( vectors ) {

		var array = this.array, offset = 0;

		for ( var i = 0, l = vectors.length; i < l; i ++ ) {

			var vector = vectors[ i ];

			if ( vector === undefined ) {

				console.warn( 'THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i );
				vector = new THREE.Vector3();

			}

			array[ offset ++ ] = vector.x;
			array[ offset ++ ] = vector.y;
			array[ offset ++ ] = vector.z;

		}

		return this;

	},

	copyVector4sArray: function ( vectors ) {

		var array = this.array, offset = 0;

		for ( var i = 0, l = vectors.length; i < l; i ++ ) {

			var vector = vectors[ i ];

			if ( vector === undefined ) {

				console.warn( 'THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i );
				vector = new THREE.Vector4();

			}

			array[ offset ++ ] = vector.x;
			array[ offset ++ ] = vector.y;
			array[ offset ++ ] = vector.z;
			array[ offset ++ ] = vector.w;

		}

		return this;

	},

	set: function ( value, offset ) {

		if ( offset === undefined ) offset = 0;

		this.array.set( value, offset );

		return this;

	},

	getX: function ( index ) {

		return this.array[ index * this.itemSize ];

	},

	setX: function ( index, x ) {

		this.array[ index * this.itemSize ] = x;

		return this;

	},

	getY: function ( index ) {

		return this.array[ index * this.itemSize + 1 ];

	},

	setY: function ( index, y ) {

		this.array[ index * this.itemSize + 1 ] = y;

		return this;

	},

	getZ: function ( index ) {

		return this.array[ index * this.itemSize + 2 ];

	},

	setZ: function ( index, z ) {

		this.array[ index * this.itemSize + 2 ] = z;

		return this;

	},

	getW: function ( index ) {

		return this.array[ index * this.itemSize + 3 ];

	},

	setW: function ( index, w ) {

		this.array[ index * this.itemSize + 3 ] = w;

		return this;

	},

	setXY: function ( index, x, y ) {

		index *= this.itemSize;

		this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;

		return this;

	},

	setXYZ: function ( index, x, y, z ) {

		index *= this.itemSize;

		this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;
		this.array[ index + 2 ] = z;

		return this;

	},

	setXYZW: function ( index, x, y, z, w ) {

		index *= this.itemSize;

		this.array[ index + 0 ] = x;
		this.array[ index + 1 ] = y;
		this.array[ index + 2 ] = z;
		this.array[ index + 3 ] = w;

		return this;

	},

	clone: function () {

		return new this.constructor().copy( this );

	}

};

//

THREE.Int8Attribute = function ( array, itemSize ) {

	return new THREE.BufferAttribute( new Int8Array( array ), itemSize );

};

THREE.Uint8Attribute = function ( array, itemSize ) {

	return new THREE.BufferAttribute( new Uint8Array( array ), itemSize );

};

THREE.Uint8ClampedAttribute = function ( array, itemSize ) {

	return new THREE.BufferAttribute( new Uint8ClampedArray( array ), itemSize );

};

THREE.Int16Attribute = function ( array, itemSize ) {

	return new THREE.BufferAttribute( new Int16Array( array ), itemSize );

};

THREE.Uint16Attribute = function ( array, itemSize ) {

	return new THREE.BufferAttribute( new Uint16Array( array ), itemSize );

};

THREE.Int32Attribute = function ( array, itemSize ) {

	return new THREE.BufferAttribute( new Int32Array( array ), itemSize );

};

THREE.Uint32Attribute = function ( array, itemSize ) {

	return new THREE.BufferAttribute( new Uint32Array( array ), itemSize );

};

THREE.Float32Attribute = function ( array, itemSize ) {

	return new THREE.BufferAttribute( new Float32Array( array ), itemSize );

};

THREE.Float64Attribute = function ( array, itemSize ) {

	return new THREE.BufferAttribute( new Float64Array( array ), itemSize );

};


// Deprecated

THREE.DynamicBufferAttribute = function ( array, itemSize ) {

	console.warn( 'THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setDynamic( true ) instead.' );
	return new THREE.BufferAttribute( array, itemSize ).setDynamic( true );

};

// File:src/core/InstancedBufferAttribute.js

/**
 * @author benaadams / https://twitter.com/ben_a_adams
 */

THREE.InstancedBufferAttribute = function ( array, itemSize, meshPerAttribute ) {

	THREE.BufferAttribute.call( this, array, itemSize );

	this.meshPerAttribute = meshPerAttribute || 1;

};

THREE.InstancedBufferAttribute.prototype = Object.create( THREE.BufferAttribute.prototype );
THREE.InstancedBufferAttribute.prototype.constructor = THREE.InstancedBufferAttribute;

THREE.InstancedBufferAttribute.prototype.copy = function ( source ) {

	THREE.BufferAttribute.prototype.copy.call( this, source );

	this.meshPerAttribute = source.meshPerAttribute;

	return this;

};

// File:src/core/InterleavedBuffer.js

/**
 * @author benaadams / https://twitter.com/ben_a_adams
 */

THREE.InterleavedBuffer = function ( array, stride ) {

	this.uuid = THREE.Math.generateUUID();

	this.array = array;
	this.stride = stride;

	this.dynamic = false;
	this.updateRange = { offset: 0, count: - 1 };

	this.version = 0;

};

THREE.InterleavedBuffer.prototype = {

	constructor: THREE.InterleavedBuffer,

	get length () {

		return this.array.length;

	},

	get count () {

		return this.array.length / this.stride;

	},

	set needsUpdate( value ) {

		if ( value === true ) this.version ++;

	},

	setDynamic: function ( value ) {

		this.dynamic = value;

		return this;

	},

	copy: function ( source ) {

		this.array = new source.array.constructor( source.array );
		this.stride = source.stride;
		this.dynamic = source.dynamic;

		return this;

	},

	copyAt: function ( index1, attribute, index2 ) {

		index1 *= this.stride;
		index2 *= attribute.stride;

		for ( var i = 0, l = this.stride; i < l; i ++ ) {

			this.array[ index1 + i ] = attribute.array[ index2 + i ];

		}

		return this;

	},

	set: function ( value, offset ) {

		if ( offset === undefined ) offset = 0;

		this.array.set( value, offset );

		return this;

	},

	clone: function () {

		return new this.constructor().copy( this );

	}

};

// File:src/core/InstancedInterleavedBuffer.js

/**
 * @author benaadams / https://twitter.com/ben_a_adams
 */

THREE.InstancedInterleavedBuffer = function ( array, stride, meshPerAttribute ) {

	THREE.InterleavedBuffer.call( this, array, stride );

	this.meshPerAttribute = meshPerAttribute || 1;

};

THREE.InstancedInterleavedBuffer.prototype = Object.create( THREE.InterleavedBuffer.prototype );
THREE.InstancedInterleavedBuffer.prototype.constructor = THREE.InstancedInterleavedBuffer;

THREE.InstancedInterleavedBuffer.prototype.copy = function ( source ) {

	THREE.InterleavedBuffer.prototype.copy.call( this, source );

	this.meshPerAttribute = source.meshPerAttribute;

	return this;

};

// File:src/core/InterleavedBufferAttribute.js

/**
 * @author benaadams / https://twitter.com/ben_a_adams
 */

THREE.InterleavedBufferAttribute = function ( interleavedBuffer, itemSize, offset ) {

	this.uuid = THREE.Math.generateUUID();

	this.data = interleavedBuffer;
	this.itemSize = itemSize;
	this.offset = offset;

};


THREE.InterleavedBufferAttribute.prototype = {

	constructor: THREE.InterleavedBufferAttribute,

	get length() {

		console.warn( 'THREE.BufferAttribute: .length has been deprecated. Please use .count.' );
		return this.array.length;

	},

	get count() {

		return this.data.count;

	},

	setX: function ( index, x ) {

		this.data.array[ index * this.data.stride + this.offset ] = x;

		return this;

	},

	setY: function ( index, y ) {

		this.data.array[ index * this.data.stride + this.offset + 1 ] = y;

		return this;

	},

	setZ: function ( index, z ) {

		this.data.array[ index * this.data.stride + this.offset + 2 ] = z;

		return this;

	},

	setW: function ( index, w ) {

		this.data.array[ index * this.data.stride + this.offset + 3 ] = w;

		return this;

	},

	getX: function ( index ) {

		return this.data.array[ index * this.data.stride + this.offset ];

	},

	getY: function ( index ) {

		return this.data.array[ index * this.data.stride + this.offset + 1 ];

	},

	getZ: function ( index ) {

		return this.data.array[ index * this.data.stride + this.offset + 2 ];

	},

	getW: function ( index ) {

		return this.data.array[ index * this.data.stride + this.offset + 3 ];

	},

	setXY: function ( index, x, y ) {

		index = index * this.data.stride + this.offset;

		this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;

		return this;

	},

	setXYZ: function ( index, x, y, z ) {

		index = index * this.data.stride + this.offset;

		this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;
		this.data.array[ index + 2 ] = z;

		return this;

	},

	setXYZW: function ( index, x, y, z, w ) {

		index = index * this.data.stride + this.offset;

		this.data.array[ index + 0 ] = x;
		this.data.array[ index + 1 ] = y;
		this.data.array[ index + 2 ] = z;
		this.data.array[ index + 3 ] = w;

		return this;

	}

};

// File:src/core/Geometry.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author kile / http://kile.stravaganza.org/
 * @author alteredq / http://alteredqualia.com/
 * @author mikael emtinger / http://gomo.se/
 * @author zz85 / http://www.lab4games.net/zz85/blog
 * @author bhouston / http://clara.io
 */

THREE.Geometry = function () {

	Object.defineProperty( this, 'id', { value: THREE.GeometryIdCount ++ } );

	this.uuid = THREE.Math.generateUUID();

	this.name = '';
	this.type = 'Geometry';

	this.vertices = [];
	this.colors = [];
	this.faces = [];
	this.faceVertexUvs = [ [] ];

	this.morphTargets = [];
	this.morphNormals = [];

	this.skinWeights = [];
	this.skinIndices = [];

	this.lineDistances = [];

	this.boundingBox = null;
	this.boundingSphere = null;

	// update flags

	this.verticesNeedUpdate = false;
	this.elementsNeedUpdate = false;
	this.uvsNeedUpdate = false;
	this.normalsNeedUpdate = false;
	this.colorsNeedUpdate = false;
	this.lineDistancesNeedUpdate = false;
	this.groupsNeedUpdate = false;

};

THREE.Geometry.prototype = {

	constructor: THREE.Geometry,

	applyMatrix: function ( matrix ) {

		var normalMatrix = new THREE.Matrix3().getNormalMatrix( matrix );

		for ( var i = 0, il = this.vertices.length; i < il; i ++ ) {

			var vertex = this.vertices[ i ];
			vertex.applyMatrix4( matrix );

		}

		for ( var i = 0, il = this.faces.length; i < il; i ++ ) {

			var face = this.faces[ i ];
			face.normal.applyMatrix3( normalMatrix ).normalize();

			for ( var j = 0, jl = face.vertexNormals.length; j < jl; j ++ ) {

				face.vertexNormals[ j ].applyMatrix3( normalMatrix ).normalize();

			}

		}

		if ( this.boundingBox !== null ) {

			this.computeBoundingBox();

		}

		if ( this.boundingSphere !== null ) {

			this.computeBoundingSphere();

		}

		this.verticesNeedUpdate = true;
		this.normalsNeedUpdate = true;

	},

	rotateX: function () {

		// rotate geometry around world x-axis

		var m1;

		return function rotateX( angle ) {

			if ( m1 === undefined ) m1 = new THREE.Matrix4();

			m1.makeRotationX( angle );

			this.applyMatrix( m1 );

			return this;

		};

	}(),

	rotateY: function () {

		// rotate geometry around world y-axis

		var m1;

		return function rotateY( angle ) {

			if ( m1 === undefined ) m1 = new THREE.Matrix4();

			m1.makeRotationY( angle );

			this.applyMatrix( m1 );

			return this;

		};

	}(),

	rotateZ: function () {

		// rotate geometry around world z-axis

		var m1;

		return function rotateZ( angle ) {

			if ( m1 === undefined ) m1 = new THREE.Matrix4();

			m1.makeRotationZ( angle );

			this.applyMatrix( m1 );

			return this;

		};

	}(),

	translate: function () {

		// translate geometry

		var m1;

		return function translate( x, y, z ) {

			if ( m1 === undefined ) m1 = new THREE.Matrix4();

			m1.makeTranslation( x, y, z );

			this.applyMatrix( m1 );

			return this;

		};

	}(),

	scale: function () {

		// scale geometry

		var m1;

		return function scale( x, y, z ) {

			if ( m1 === undefined ) m1 = new THREE.Matrix4();

			m1.makeScale( x, y, z );

			this.applyMatrix( m1 );

			return this;

		};

	}(),

	lookAt: function () {

		var obj;

		return function lookAt( vector ) {

			if ( obj === undefined ) obj = new THREE.Object3D();

			obj.lookAt( vector );

			obj.updateMatrix();

			this.applyMatrix( obj.matrix );

		};

	}(),

	fromBufferGeometry: function ( geometry ) {

		var scope = this;

		var indices = geometry.index !== null ? geometry.index.array : undefined;
		var attributes = geometry.attributes;

		var positions = attributes.position.array;
		var normals = attributes.normal !== undefined ? attributes.normal.array : undefined;
		var colors = attributes.color !== undefined ? attributes.color.array : undefined;
		var uvs = attributes.uv !== undefined ? attributes.uv.array : undefined;
		var uvs2 = attributes.uv2 !== undefined ? attributes.uv2.array : undefined;

		if ( uvs2 !== undefined ) this.faceVertexUvs[ 1 ] = [];

		var tempNormals = [];
		var tempUVs = [];
		var tempUVs2 = [];

		for ( var i = 0, j = 0; i < positions.length; i += 3, j += 2 ) {

			scope.vertices.push( new THREE.Vector3( positions[ i ], positions[ i + 1 ], positions[ i + 2 ] ) );

			if ( normals !== undefined ) {

				tempNormals.push( new THREE.Vector3( normals[ i ], normals[ i + 1 ], normals[ i + 2 ] ) );

			}

			if ( colors !== undefined ) {

				scope.colors.push( new THREE.Color( colors[ i ], colors[ i + 1 ], colors[ i + 2 ] ) );

			}

			if ( uvs !== undefined ) {

				tempUVs.push( new THREE.Vector2( uvs[ j ], uvs[ j + 1 ] ) );

			}

			if ( uvs2 !== undefined ) {

				tempUVs2.push( new THREE.Vector2( uvs2[ j ], uvs2[ j + 1 ] ) );

			}

		}

		function addFace( a, b, c ) {

			var vertexNormals = normals !== undefined ? [ tempNormals[ a ].clone(), tempNormals[ b ].clone(), tempNormals[ c ].clone() ] : [];
			var vertexColors = colors !== undefined ? [ scope.colors[ a ].clone(), scope.colors[ b ].clone(), scope.colors[ c ].clone() ] : [];

			var face = new THREE.Face3( a, b, c, vertexNormals, vertexColors );

			scope.faces.push( face );

			if ( uvs !== undefined ) {

				scope.faceVertexUvs[ 0 ].push( [ tempUVs[ a ].clone(), tempUVs[ b ].clone(), tempUVs[ c ].clone() ] );

			}

			if ( uvs2 !== undefined ) {

				scope.faceVertexUvs[ 1 ].push( [ tempUVs2[ a ].clone(), tempUVs2[ b ].clone(), tempUVs2[ c ].clone() ] );

			}

		}

		if ( indices !== undefined ) {

			var groups = geometry.groups;

			if ( groups.length > 0 ) {

				for ( var i = 0; i < groups.length; i ++ ) {

					var group = groups[ i ];

					var start = group.start;
					var count = group.count;

					for ( var j = start, jl = start + count; j < jl; j += 3 ) {

						addFace( indices[ j ], indices[ j + 1 ], indices[ j + 2 ] );

					}

				}

			} else {

				for ( var i = 0; i < indices.length; i += 3 ) {

					addFace( indices[ i ], indices[ i + 1 ], indices[ i + 2 ] );

				}

			}

		} else {

			for ( var i = 0; i < positions.length / 3; i += 3 ) {

				addFace( i, i + 1, i + 2 );

			}

		}

		this.computeFaceNormals();

		if ( geometry.boundingBox !== null ) {

			this.boundingBox = geometry.boundingBox.clone();

		}

		if ( geometry.boundingSphere !== null ) {

			this.boundingSphere = geometry.boundingSphere.clone();

		}

		return this;

	},

	center: function () {

		this.computeBoundingBox();

		var offset = this.boundingBox.center().negate();

		this.translate( offset.x, offset.y, offset.z );

		return offset;

	},

	normalize: function () {

		this.computeBoundingSphere();

		var center = this.boundingSphere.center;
		var radius = this.boundingSphere.radius;

		var s = radius === 0 ? 1 : 1.0 / radius;

		var matrix = new THREE.Matrix4();
		matrix.set(
			s, 0, 0, - s * center.x,
			0, s, 0, - s * center.y,
			0, 0, s, - s * center.z,
			0, 0, 0, 1
		);

		this.applyMatrix( matrix );

		return this;

	},

	computeFaceNormals: function () {

		var cb = new THREE.Vector3(), ab = new THREE.Vector3();

		for ( var f = 0, fl = this.faces.length; f < fl; f ++ ) {

			var face = this.faces[ f ];

			var vA = this.vertices[ face.a ];
			var vB = this.vertices[ face.b ];
			var vC = this.vertices[ face.c ];

			cb.subVectors( vC, vB );
			ab.subVectors( vA, vB );
			cb.cross( ab );

			cb.normalize();

			face.normal.copy( cb );

		}

	},

	computeVertexNormals: function ( areaWeighted ) {

		if ( areaWeighted === undefined ) areaWeighted = true;

		var v, vl, f, fl, face, vertices;

		vertices = new Array( this.vertices.length );

		for ( v = 0, vl = this.vertices.length; v < vl; v ++ ) {

			vertices[ v ] = new THREE.Vector3();

		}

		if ( areaWeighted ) {

			// vertex normals weighted by triangle areas
			// http://www.iquilezles.org/www/articles/normals/normals.htm

			var vA, vB, vC;
			var cb = new THREE.Vector3(), ab = new THREE.Vector3();

			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

				face = this.faces[ f ];

				vA = this.vertices[ face.a ];
				vB = this.vertices[ face.b ];
				vC = this.vertices[ face.c ];

				cb.subVectors( vC, vB );
				ab.subVectors( vA, vB );
				cb.cross( ab );

				vertices[ face.a ].add( cb );
				vertices[ face.b ].add( cb );
				vertices[ face.c ].add( cb );

			}

		} else {

			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

				face = this.faces[ f ];

				vertices[ face.a ].add( face.normal );
				vertices[ face.b ].add( face.normal );
				vertices[ face.c ].add( face.normal );

			}

		}

		for ( v = 0, vl = this.vertices.length; v < vl; v ++ ) {

			vertices[ v ].normalize();

		}

		for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

			face = this.faces[ f ];

			var vertexNormals = face.vertexNormals;

			if ( vertexNormals.length === 3 ) {

				vertexNormals[ 0 ].copy( vertices[ face.a ] );
				vertexNormals[ 1 ].copy( vertices[ face.b ] );
				vertexNormals[ 2 ].copy( vertices[ face.c ] );

			} else {

				vertexNormals[ 0 ] = vertices[ face.a ].clone();
				vertexNormals[ 1 ] = vertices[ face.b ].clone();
				vertexNormals[ 2 ] = vertices[ face.c ].clone();

			}

		}

		if ( this.faces.length > 0 ) {

			this.normalsNeedUpdate = true;

		}

	},

	computeMorphNormals: function () {

		var i, il, f, fl, face;

		// save original normals
		// - create temp variables on first access
		//   otherwise just copy (for faster repeated calls)

		for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

			face = this.faces[ f ];

			if ( ! face.__originalFaceNormal ) {

				face.__originalFaceNormal = face.normal.clone();

			} else {

				face.__originalFaceNormal.copy( face.normal );

			}

			if ( ! face.__originalVertexNormals ) face.__originalVertexNormals = [];

			for ( i = 0, il = face.vertexNormals.length; i < il; i ++ ) {

				if ( ! face.__originalVertexNormals[ i ] ) {

					face.__originalVertexNormals[ i ] = face.vertexNormals[ i ].clone();

				} else {

					face.__originalVertexNormals[ i ].copy( face.vertexNormals[ i ] );

				}

			}

		}

		// use temp geometry to compute face and vertex normals for each morph

		var tmpGeo = new THREE.Geometry();
		tmpGeo.faces = this.faces;

		for ( i = 0, il = this.morphTargets.length; i < il; i ++ ) {

			// create on first access

			if ( ! this.morphNormals[ i ] ) {

				this.morphNormals[ i ] = {};
				this.morphNormals[ i ].faceNormals = [];
				this.morphNormals[ i ].vertexNormals = [];

				var dstNormalsFace = this.morphNormals[ i ].faceNormals;
				var dstNormalsVertex = this.morphNormals[ i ].vertexNormals;

				var faceNormal, vertexNormals;

				for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

					faceNormal = new THREE.Vector3();
					vertexNormals = { a: new THREE.Vector3(), b: new THREE.Vector3(), c: new THREE.Vector3() };

					dstNormalsFace.push( faceNormal );
					dstNormalsVertex.push( vertexNormals );

				}

			}

			var morphNormals = this.morphNormals[ i ];

			// set vertices to morph target

			tmpGeo.vertices = this.morphTargets[ i ].vertices;

			// compute morph normals

			tmpGeo.computeFaceNormals();
			tmpGeo.computeVertexNormals();

			// store morph normals

			var faceNormal, vertexNormals;

			for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

				face = this.faces[ f ];

				faceNormal = morphNormals.faceNormals[ f ];
				vertexNormals = morphNormals.vertexNormals[ f ];

				faceNormal.copy( face.normal );

				vertexNormals.a.copy( face.vertexNormals[ 0 ] );
				vertexNormals.b.copy( face.vertexNormals[ 1 ] );
				vertexNormals.c.copy( face.vertexNormals[ 2 ] );

			}

		}

		// restore original normals

		for ( f = 0, fl = this.faces.length; f < fl; f ++ ) {

			face = this.faces[ f ];

			face.normal = face.__originalFaceNormal;
			face.vertexNormals = face.__originalVertexNormals;

		}

	},

	computeTangents: function () {

		console.warn( 'THREE.Geometry: .computeTangents() has been removed.' );

	},

	computeLineDistances: function () {

		var d = 0;
		var vertices = this.vertices;

		for ( var i = 0, il = vertices.length; i < il; i ++ ) {

			if ( i > 0 ) {

				d += vertices[ i ].distanceTo( vertices[ i - 1 ] );

			}

			this.lineDistances[ i ] = d;

		}

	},

	computeBoundingBox: function () {

		if ( this.boundingBox === null ) {

			this.boundingBox = new THREE.Box3();

		}

		this.boundingBox.setFromPoints( this.vertices );

	},

	computeBoundingSphere: function () {

		if ( this.boundingSphere === null ) {

			this.boundingSphere = new THREE.Sphere();

		}

		this.boundingSphere.setFromPoints( this.vertices );

	},

	merge: function ( geometry, matrix, materialIndexOffset ) {

		if ( geometry instanceof THREE.Geometry === false ) {

			console.error( 'THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.', geometry );
			return;

		}

		var normalMatrix,
		vertexOffset = this.vertices.length,
		vertices1 = this.vertices,
		vertices2 = geometry.vertices,
		faces1 = this.faces,
		faces2 = geometry.faces,
		uvs1 = this.faceVertexUvs[ 0 ],
		uvs2 = geometry.faceVertexUvs[ 0 ];

		if ( materialIndexOffset === undefined ) materialIndexOffset = 0;

		if ( matrix !== undefined ) {

			normalMatrix = new THREE.Matrix3().getNormalMatrix( matrix );

		}

		// vertices

		for ( var i = 0, il = vertices2.length; i < il; i ++ ) {

			var vertex = vertices2[ i ];

			var vertexCopy = vertex.clone();

			if ( matrix !== undefined ) vertexCopy.applyMatrix4( matrix );

			vertices1.push( vertexCopy );

		}

		// faces

		for ( i = 0, il = faces2.length; i < il; i ++ ) {

			var face = faces2[ i ], faceCopy, normal, color,
			faceVertexNormals = face.vertexNormals,
			faceVertexColors = face.vertexColors;

			faceCopy = new THREE.Face3( face.a + vertexOffset, face.b + vertexOffset, face.c + vertexOffset );
			faceCopy.normal.copy( face.normal );

			if ( normalMatrix !== undefined ) {

				faceCopy.normal.applyMatrix3( normalMatrix ).normalize();

			}

			for ( var j = 0, jl = faceVertexNormals.length; j < jl; j ++ ) {

				normal = faceVertexNormals[ j ].clone();

				if ( normalMatrix !== undefined ) {

					normal.applyMatrix3( normalMatrix ).normalize();

				}

				faceCopy.vertexNormals.push( normal );

			}

			faceCopy.color.copy( face.color );

			for ( var j = 0, jl = faceVertexColors.length; j < jl; j ++ ) {

				color = faceVertexColors[ j ];
				faceCopy.vertexColors.push( color.clone() );

			}

			faceCopy.materialIndex = face.materialIndex + materialIndexOffset;

			faces1.push( faceCopy );

		}

		// uvs

		for ( i = 0, il = uvs2.length; i < il; i ++ ) {

			var uv = uvs2[ i ], uvCopy = [];

			if ( uv === undefined ) {

				continue;

			}

			for ( var j = 0, jl = uv.length; j < jl; j ++ ) {

				uvCopy.push( uv[ j ].clone() );

			}

			uvs1.push( uvCopy );

		}

	},

	mergeMesh: function ( mesh ) {

		if ( mesh instanceof THREE.Mesh === false ) {

			console.error( 'THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.', mesh );
			return;

		}

		mesh.matrixAutoUpdate && mesh.updateMatrix();

		this.merge( mesh.geometry, mesh.matrix );

	},

	/*
	 * Checks for duplicate vertices with hashmap.
	 * Duplicated vertices are removed
	 * and faces' vertices are updated.
	 */

	mergeVertices: function () {

		var verticesMap = {}; // Hashmap for looking up vertices by position coordinates (and making sure they are unique)
		var unique = [], changes = [];

		var v, key;
		var precisionPoints = 4; // number of decimal points, e.g. 4 for epsilon of 0.0001
		var precision = Math.pow( 10, precisionPoints );
		var i, il, face;
		var indices, j, jl;

		for ( i = 0, il = this.vertices.length; i < il; i ++ ) {

			v = this.vertices[ i ];
			key = Math.round( v.x * precision ) + '_' + Math.round( v.y * precision ) + '_' + Math.round( v.z * precision );

			if ( verticesMap[ key ] === undefined ) {

				verticesMap[ key ] = i;
				unique.push( this.vertices[ i ] );
				changes[ i ] = unique.length - 1;

			} else {

				//console.log('Duplicate vertex found. ', i, ' could be using ', verticesMap[key]);
				changes[ i ] = changes[ verticesMap[ key ] ];

			}

		}


		// if faces are completely degenerate after merging vertices, we
		// have to remove them from the geometry.
		var faceIndicesToRemove = [];

		for ( i = 0, il = this.faces.length; i < il; i ++ ) {

			face = this.faces[ i ];

			face.a = changes[ face.a ];
			face.b = changes[ face.b ];
			face.c = changes[ face.c ];

			indices = [ face.a, face.b, face.c ];

			var dupIndex = - 1;

			// if any duplicate vertices are found in a Face3
			// we have to remove the face as nothing can be saved
			for ( var n = 0; n < 3; n ++ ) {

				if ( indices[ n ] === indices[ ( n + 1 ) % 3 ] ) {

					dupIndex = n;
					faceIndicesToRemove.push( i );
					break;

				}

			}

		}

		for ( i = faceIndicesToRemove.length - 1; i >= 0; i -- ) {

			var idx = faceIndicesToRemove[ i ];

			this.faces.splice( idx, 1 );

			for ( j = 0, jl = this.faceVertexUvs.length; j < jl; j ++ ) {

				this.faceVertexUvs[ j ].splice( idx, 1 );

			}

		}

		// Use unique set of vertices

		var diff = this.vertices.length - unique.length;
		this.vertices = unique;
		return diff;

	},

	sortFacesByMaterialIndex: function () {

		var faces = this.faces;
		var length = faces.length;

		// tag faces

		for ( var i = 0; i < length; i ++ ) {

			faces[ i ]._id = i;

		}

		// sort faces

		function materialIndexSort( a, b ) {

			return a.materialIndex - b.materialIndex;

		}

		faces.sort( materialIndexSort );

		// sort uvs

		var uvs1 = this.faceVertexUvs[ 0 ];
		var uvs2 = this.faceVertexUvs[ 1 ];

		var newUvs1, newUvs2;

		if ( uvs1 && uvs1.length === length ) newUvs1 = [];
		if ( uvs2 && uvs2.length === length ) newUvs2 = [];

		for ( var i = 0; i < length; i ++ ) {

			var id = faces[ i ]._id;

			if ( newUvs1 ) newUvs1.push( uvs1[ id ] );
			if ( newUvs2 ) newUvs2.push( uvs2[ id ] );

		}

		if ( newUvs1 ) this.faceVertexUvs[ 0 ] = newUvs1;
		if ( newUvs2 ) this.faceVertexUvs[ 1 ] = newUvs2;

	},

	toJSON: function () {

		var data = {
			metadata: {
				version: 4.4,
				type: 'Geometry',
				generator: 'Geometry.toJSON'
			}
		};

		// standard Geometry serialization

		data.uuid = this.uuid;
		data.type = this.type;
		if ( this.name !== '' ) data.name = this.name;

		if ( this.parameters !== undefined ) {

			var parameters = this.parameters;

			for ( var key in parameters ) {

				if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];

			}

			return data;

		}

		var vertices = [];

		for ( var i = 0; i < this.vertices.length; i ++ ) {

			var vertex = this.vertices[ i ];
			vertices.push( vertex.x, vertex.y, vertex.z );

		}

		var faces = [];
		var normals = [];
		var normalsHash = {};
		var colors = [];
		var colorsHash = {};
		var uvs = [];
		var uvsHash = {};

		for ( var i = 0; i < this.faces.length; i ++ ) {

			var face = this.faces[ i ];

			var hasMaterial = true;
			var hasFaceUv = false; // deprecated
			var hasFaceVertexUv = this.faceVertexUvs[ 0 ][ i ] !== undefined;
			var hasFaceNormal = face.normal.length() > 0;
			var hasFaceVertexNormal = face.vertexNormals.length > 0;
			var hasFaceColor = face.color.r !== 1 || face.color.g !== 1 || face.color.b !== 1;
			var hasFaceVertexColor = face.vertexColors.length > 0;

			var faceType = 0;

			faceType = setBit( faceType, 0, 0 ); // isQuad
			faceType = setBit( faceType, 1, hasMaterial );
			faceType = setBit( faceType, 2, hasFaceUv );
			faceType = setBit( faceType, 3, hasFaceVertexUv );
			faceType = setBit( faceType, 4, hasFaceNormal );
			faceType = setBit( faceType, 5, hasFaceVertexNormal );
			faceType = setBit( faceType, 6, hasFaceColor );
			faceType = setBit( faceType, 7, hasFaceVertexColor );

			faces.push( faceType );
			faces.push( face.a, face.b, face.c );
			faces.push( face.materialIndex );

			if ( hasFaceVertexUv ) {

				var faceVertexUvs = this.faceVertexUvs[ 0 ][ i ];

				faces.push(
					getUvIndex( faceVertexUvs[ 0 ] ),
					getUvIndex( faceVertexUvs[ 1 ] ),
					getUvIndex( faceVertexUvs[ 2 ] )
				);

			}

			if ( hasFaceNormal ) {

				faces.push( getNormalIndex( face.normal ) );

			}

			if ( hasFaceVertexNormal ) {

				var vertexNormals = face.vertexNormals;

				faces.push(
					getNormalIndex( vertexNormals[ 0 ] ),
					getNormalIndex( vertexNormals[ 1 ] ),
					getNormalIndex( vertexNormals[ 2 ] )
				);

			}

			if ( hasFaceColor ) {

				faces.push( getColorIndex( face.color ) );

			}

			if ( hasFaceVertexColor ) {

				var vertexColors = face.vertexColors;

				faces.push(
					getColorIndex( vertexColors[ 0 ] ),
					getColorIndex( vertexColors[ 1 ] ),
					getColorIndex( vertexColors[ 2 ] )
				);

			}

		}

		function setBit( value, position, enabled ) {

			return enabled ? value | ( 1 << position ) : value & ( ~ ( 1 << position ) );

		}

		function getNormalIndex( normal ) {

			var hash = normal.x.toString() + normal.y.toString() + normal.z.toString();

			if ( normalsHash[ hash ] !== undefined ) {

				return normalsHash[ hash ];

			}

			normalsHash[ hash ] = normals.length / 3;
			normals.push( normal.x, normal.y, normal.z );

			return normalsHash[ hash ];

		}

		function getColorIndex( color ) {

			var hash = color.r.toString() + color.g.toString() + color.b.toString();

			if ( colorsHash[ hash ] !== undefined ) {

				return colorsHash[ hash ];

			}

			colorsHash[ hash ] = colors.length;
			colors.push( color.getHex() );

			return colorsHash[ hash ];

		}

		function getUvIndex( uv ) {

			var hash = uv.x.toString() + uv.y.toString();

			if ( uvsHash[ hash ] !== undefined ) {

				return uvsHash[ hash ];

			}

			uvsHash[ hash ] = uvs.length / 2;
			uvs.push( uv.x, uv.y );

			return uvsHash[ hash ];

		}

		data.data = {};

		data.data.vertices = vertices;
		data.data.normals = normals;
		if ( colors.length > 0 ) data.data.colors = colors;
		if ( uvs.length > 0 ) data.data.uvs = [ uvs ]; // temporal backward compatibility
		data.data.faces = faces;

		return data;

	},

	clone: function () {

		/*
		// Handle primitives

		var parameters = this.parameters;

		if ( parameters !== undefined ) {

			var values = [];

			for ( var key in parameters ) {

				values.push( parameters[ key ] );

			}

			var geometry = Object.create( this.constructor.prototype );
			this.constructor.apply( geometry, values );
			return geometry;

		}

		return new this.constructor().copy( this );
		*/

		return new THREE.Geometry().copy( this );

	},

	copy: function ( source ) {

		this.vertices = [];
		this.faces = [];
		this.faceVertexUvs = [ [] ];

		var vertices = source.vertices;

		for ( var i = 0, il = vertices.length; i < il; i ++ ) {

			this.vertices.push( vertices[ i ].clone() );

		}

		var faces = source.faces;

		for ( var i = 0, il = faces.length; i < il; i ++ ) {

			this.faces.push( faces[ i ].clone() );

		}

		for ( var i = 0, il = source.faceVertexUvs.length; i < il; i ++ ) {

			var faceVertexUvs = source.faceVertexUvs[ i ];

			if ( this.faceVertexUvs[ i ] === undefined ) {

				this.faceVertexUvs[ i ] = [];

			}

			for ( var j = 0, jl = faceVertexUvs.length; j < jl; j ++ ) {

				var uvs = faceVertexUvs[ j ], uvsCopy = [];

				for ( var k = 0, kl = uvs.length; k < kl; k ++ ) {

					var uv = uvs[ k ];

					uvsCopy.push( uv.clone() );

				}

				this.faceVertexUvs[ i ].push( uvsCopy );

			}

		}

		return this;

	},

	dispose: function () {

		this.dispatchEvent( { type: 'dispose' } );

	}

};

THREE.EventDispatcher.prototype.apply( THREE.Geometry.prototype );

THREE.GeometryIdCount = 0;

// File:src/core/DirectGeometry.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.DirectGeometry = function () {

	Object.defineProperty( this, 'id', { value: THREE.GeometryIdCount ++ } );

	this.uuid = THREE.Math.generateUUID();

	this.name = '';
	this.type = 'DirectGeometry';

	this.indices = [];
	this.vertices = [];
	this.normals = [];
	this.colors = [];
	this.uvs = [];
	this.uvs2 = [];

	this.groups = [];

	this.morphTargets = {};

	this.skinWeights = [];
	this.skinIndices = [];

	// this.lineDistances = [];

	this.boundingBox = null;
	this.boundingSphere = null;

	// update flags

	this.verticesNeedUpdate = false;
	this.normalsNeedUpdate = false;
	this.colorsNeedUpdate = false;
	this.uvsNeedUpdate = false;
	this.groupsNeedUpdate = false;

};

THREE.DirectGeometry.prototype = {

	constructor: THREE.DirectGeometry,

	computeBoundingBox: THREE.Geometry.prototype.computeBoundingBox,
	computeBoundingSphere: THREE.Geometry.prototype.computeBoundingSphere,

	computeFaceNormals: function () {

		console.warn( 'THREE.DirectGeometry: computeFaceNormals() is not a method of this type of geometry.' );

	},

	computeVertexNormals: function () {

		console.warn( 'THREE.DirectGeometry: computeVertexNormals() is not a method of this type of geometry.' );

	},

	computeGroups: function ( geometry ) {

		var group;
		var groups = [];
		var materialIndex;

		var faces = geometry.faces;

		for ( var i = 0; i < faces.length; i ++ ) {

			var face = faces[ i ];

			// materials

			if ( face.materialIndex !== materialIndex ) {

				materialIndex = face.materialIndex;

				if ( group !== undefined ) {

					group.count = ( i * 3 ) - group.start;
					groups.push( group );

				}

				group = {
					start: i * 3,
					materialIndex: materialIndex
				};

			}

		}

		if ( group !== undefined ) {

			group.count = ( i * 3 ) - group.start;
			groups.push( group );

		}

		this.groups = groups;

	},

	fromGeometry: function ( geometry ) {

		var faces = geometry.faces;
		var vertices = geometry.vertices;
		var faceVertexUvs = geometry.faceVertexUvs;

		var hasFaceVertexUv = faceVertexUvs[ 0 ] && faceVertexUvs[ 0 ].length > 0;
		var hasFaceVertexUv2 = faceVertexUvs[ 1 ] && faceVertexUvs[ 1 ].length > 0;

		// morphs

		var morphTargets = geometry.morphTargets;
		var morphTargetsLength = morphTargets.length;

		var morphTargetsPosition;

		if ( morphTargetsLength > 0 ) {

			morphTargetsPosition = [];

			for ( var i = 0; i < morphTargetsLength; i ++ ) {

				morphTargetsPosition[ i ] = [];

			}

			this.morphTargets.position = morphTargetsPosition;

		}

		var morphNormals = geometry.morphNormals;
		var morphNormalsLength = morphNormals.length;

		var morphTargetsNormal;

		if ( morphNormalsLength > 0 ) {

			morphTargetsNormal = [];

			for ( var i = 0; i < morphNormalsLength; i ++ ) {

				morphTargetsNormal[ i ] = [];

			}

			this.morphTargets.normal = morphTargetsNormal;

		}

		// skins

		var skinIndices = geometry.skinIndices;
		var skinWeights = geometry.skinWeights;

		var hasSkinIndices = skinIndices.length === vertices.length;
		var hasSkinWeights = skinWeights.length === vertices.length;

		//

		for ( var i = 0; i < faces.length; i ++ ) {

			var face = faces[ i ];

			this.vertices.push( vertices[ face.a ], vertices[ face.b ], vertices[ face.c ] );

			var vertexNormals = face.vertexNormals;

			if ( vertexNormals.length === 3 ) {

				this.normals.push( vertexNormals[ 0 ], vertexNormals[ 1 ], vertexNormals[ 2 ] );

			} else {

				var normal = face.normal;

				this.normals.push( normal, normal, normal );

			}

			var vertexColors = face.vertexColors;

			if ( vertexColors.length === 3 ) {

				this.colors.push( vertexColors[ 0 ], vertexColors[ 1 ], vertexColors[ 2 ] );

			} else {

				var color = face.color;

				this.colors.push( color, color, color );

			}

			if ( hasFaceVertexUv === true ) {

				var vertexUvs = faceVertexUvs[ 0 ][ i ];

				if ( vertexUvs !== undefined ) {

					this.uvs.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );

				} else {

					console.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv ', i );

					this.uvs.push( new THREE.Vector2(), new THREE.Vector2(), new THREE.Vector2() );

				}

			}

			if ( hasFaceVertexUv2 === true ) {

				var vertexUvs = faceVertexUvs[ 1 ][ i ];

				if ( vertexUvs !== undefined ) {

					this.uvs2.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );

				} else {

					console.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv2 ', i );

					this.uvs2.push( new THREE.Vector2(), new THREE.Vector2(), new THREE.Vector2() );

				}

			}

			// morphs

			for ( var j = 0; j < morphTargetsLength; j ++ ) {

				var morphTarget = morphTargets[ j ].vertices;

				morphTargetsPosition[ j ].push( morphTarget[ face.a ], morphTarget[ face.b ], morphTarget[ face.c ] );

			}

			for ( var j = 0; j < morphNormalsLength; j ++ ) {

				var morphNormal = morphNormals[ j ].vertexNormals[ i ];

				morphTargetsNormal[ j ].push( morphNormal.a, morphNormal.b, morphNormal.c );

			}

			// skins

			if ( hasSkinIndices ) {

				this.skinIndices.push( skinIndices[ face.a ], skinIndices[ face.b ], skinIndices[ face.c ] );

			}

			if ( hasSkinWeights ) {

				this.skinWeights.push( skinWeights[ face.a ], skinWeights[ face.b ], skinWeights[ face.c ] );

			}

		}

		this.computeGroups( geometry );

		this.verticesNeedUpdate = geometry.verticesNeedUpdate;
		this.normalsNeedUpdate = geometry.normalsNeedUpdate;
		this.colorsNeedUpdate = geometry.colorsNeedUpdate;
		this.uvsNeedUpdate = geometry.uvsNeedUpdate;
		this.groupsNeedUpdate = geometry.groupsNeedUpdate;

		return this;

	},

	dispose: function () {

		this.dispatchEvent( { type: 'dispose' } );

	}

};

THREE.EventDispatcher.prototype.apply( THREE.DirectGeometry.prototype );

// File:src/core/BufferGeometry.js

/**
 * @author alteredq / http://alteredqualia.com/
 * @author mrdoob / http://mrdoob.com/
 */

THREE.BufferGeometry = function () {

	Object.defineProperty( this, 'id', { value: THREE.GeometryIdCount ++ } );

	this.uuid = THREE.Math.generateUUID();

	this.name = '';
	this.type = 'BufferGeometry';

	this.index = null;
	this.attributes = {};

	this.morphAttributes = {};

	this.groups = [];

	this.boundingBox = null;
	this.boundingSphere = null;

	this.drawRange = { start: 0, count: Infinity };

};

THREE.BufferGeometry.prototype = {

	constructor: THREE.BufferGeometry,

	getIndex: function () {

		return this.index;

	},

	setIndex: function ( index ) {

		this.index = index;

	},

	addAttribute: function ( name, attribute ) {

		if ( attribute instanceof THREE.BufferAttribute === false && attribute instanceof THREE.InterleavedBufferAttribute === false ) {

			console.warn( 'THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).' );

			this.addAttribute( name, new THREE.BufferAttribute( arguments[ 1 ], arguments[ 2 ] ) );

			return;

		}

		if ( name === 'index' ) {

			console.warn( 'THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.' );
			this.setIndex( attribute );

			return;

		}

		this.attributes[ name ] = attribute;

		return this;

	},

	getAttribute: function ( name ) {

		return this.attributes[ name ];

	},

	removeAttribute: function ( name ) {

		delete this.attributes[ name ];

		return this;

	},

	addGroup: function ( start, count, materialIndex ) {

		this.groups.push( {

			start: start,
			count: count,
			materialIndex: materialIndex !== undefined ? materialIndex : 0

		} );

	},

	clearGroups: function () {

		this.groups = [];

	},

	setDrawRange: function ( start, count ) {

		this.drawRange.start = start;
		this.drawRange.count = count;

	},

	applyMatrix: function ( matrix ) {

		var position = this.attributes.position;

		if ( position !== undefined ) {

			matrix.applyToVector3Array( position.array );
			position.needsUpdate = true;

		}

		var normal = this.attributes.normal;

		if ( normal !== undefined ) {

			var normalMatrix = new THREE.Matrix3().getNormalMatrix( matrix );

			normalMatrix.applyToVector3Array( normal.array );
			normal.needsUpdate = true;

		}

		if ( this.boundingBox !== null ) {

			this.computeBoundingBox();

		}

		if ( this.boundingSphere !== null ) {

			this.computeBoundingSphere();

		}

	},

	rotateX: function () {

		// rotate geometry around world x-axis

		var m1;

		return function rotateX( angle ) {

			if ( m1 === undefined ) m1 = new THREE.Matrix4();

			m1.makeRotationX( angle );

			this.applyMatrix( m1 );

			return this;

		};

	}(),

	rotateY: function () {

		// rotate geometry around world y-axis

		var m1;

		return function rotateY( angle ) {

			if ( m1 === undefined ) m1 = new THREE.Matrix4();

			m1.makeRotationY( angle );

			this.applyMatrix( m1 );

			return this;

		};

	}(),

	rotateZ: function () {

		// rotate geometry around world z-axis

		var m1;

		return function rotateZ( angle ) {

			if ( m1 === undefined ) m1 = new THREE.Matrix4();

			m1.makeRotationZ( angle );

			this.applyMatrix( m1 );

			return this;

		};

	}(),

	translate: function () {

		// translate geometry

		var m1;

		return function translate( x, y, z ) {

			if ( m1 === undefined ) m1 = new THREE.Matrix4();

			m1.makeTranslation( x, y, z );

			this.applyMatrix( m1 );

			return this;

		};

	}(),

	scale: function () {

		// scale geometry

		var m1;

		return function scale( x, y, z ) {

			if ( m1 === undefined ) m1 = new THREE.Matrix4();

			m1.makeScale( x, y, z );

			this.applyMatrix( m1 );

			return this;

		};

	}(),

	lookAt: function () {

		var obj;

		return function lookAt( vector ) {

			if ( obj === undefined ) obj = new THREE.Object3D();

			obj.lookAt( vector );

			obj.updateMatrix();

			this.applyMatrix( obj.matrix );

		};

	}(),

	center: function () {

		this.computeBoundingBox();

		var offset = this.boundingBox.center().negate();

		this.translate( offset.x, offset.y, offset.z );

		return offset;

	},

	setFromObject: function ( object ) {

		// console.log( 'THREE.BufferGeometry.setFromObject(). Converting', object, this );

		var geometry = object.geometry;

		if ( object instanceof THREE.Points || object instanceof THREE.Line ) {

			var positions = new THREE.Float32Attribute( geometry.vertices.length * 3, 3 );
			var colors = new THREE.Float32Attribute( geometry.colors.length * 3, 3 );

			this.addAttribute( 'position', positions.copyVector3sArray( geometry.vertices ) );
			this.addAttribute( 'color', colors.copyColorsArray( geometry.colors ) );

			if ( geometry.lineDistances && geometry.lineDistances.length === geometry.vertices.length ) {

				var lineDistances = new THREE.Float32Attribute( geometry.lineDistances.length, 1 );

				this.addAttribute( 'lineDistance', lineDistances.copyArray( geometry.lineDistances ) );

			}

			if ( geometry.boundingSphere !== null ) {

				this.boundingSphere = geometry.boundingSphere.clone();

			}

			if ( geometry.boundingBox !== null ) {

				this.boundingBox = geometry.boundingBox.clone();

			}

		} else if ( object instanceof THREE.Mesh ) {

			if ( geometry instanceof THREE.Geometry ) {

				this.fromGeometry( geometry );

			}

		}

		return this;

	},

	updateFromObject: function ( object ) {

		var geometry = object.geometry;

		if ( object instanceof THREE.Mesh ) {

			var direct = geometry.__directGeometry;

			if ( direct === undefined ) {

				return this.fromGeometry( geometry );

			}

			direct.verticesNeedUpdate = geometry.verticesNeedUpdate;
			direct.normalsNeedUpdate = geometry.normalsNeedUpdate;
			direct.colorsNeedUpdate = geometry.colorsNeedUpdate;
			direct.uvsNeedUpdate = geometry.uvsNeedUpdate;
			direct.groupsNeedUpdate = geometry.groupsNeedUpdate;

			geometry.verticesNeedUpdate = false;
			geometry.normalsNeedUpdate = false;
			geometry.colorsNeedUpdate = false;
			geometry.uvsNeedUpdate = false;
			geometry.groupsNeedUpdate = false;

			geometry = direct;

		}

		if ( geometry.verticesNeedUpdate === true ) {

			var attribute = this.attributes.position;

			if ( attribute !== undefined ) {

				attribute.copyVector3sArray( geometry.vertices );
				attribute.needsUpdate = true;

			}

			geometry.verticesNeedUpdate = false;

		}

		if ( geometry.normalsNeedUpdate === true ) {

			var attribute = this.attributes.normal;

			if ( attribute !== undefined ) {

				attribute.copyVector3sArray( geometry.normals );
				attribute.needsUpdate = true;

			}

			geometry.normalsNeedUpdate = false;

		}

		if ( geometry.colorsNeedUpdate === true ) {

			var attribute = this.attributes.color;

			if ( attribute !== undefined ) {

				attribute.copyColorsArray( geometry.colors );
				attribute.needsUpdate = true;

			}

			geometry.colorsNeedUpdate = false;

		}

		if ( geometry.uvsNeedUpdate ) {

			var attribute = this.attributes.uv;

			if ( attribute !== undefined ) {

				attribute.copyVector2sArray( geometry.uvs );
				attribute.needsUpdate = true;

			}

			geometry.uvsNeedUpdate = false;

		}

		if ( geometry.lineDistancesNeedUpdate ) {

			var attribute = this.attributes.lineDistance;

			if ( attribute !== undefined ) {

				attribute.copyArray( geometry.lineDistances );
				attribute.needsUpdate = true;

			}

			geometry.lineDistancesNeedUpdate = false;

		}

		if ( geometry.groupsNeedUpdate ) {

			geometry.computeGroups( object.geometry );
			this.groups = geometry.groups;

			geometry.groupsNeedUpdate = false;

		}

		return this;

	},

	fromGeometry: function ( geometry ) {

		geometry.__directGeometry = new THREE.DirectGeometry().fromGeometry( geometry );

		return this.fromDirectGeometry( geometry.__directGeometry );

	},

	fromDirectGeometry: function ( geometry ) {

		var positions = new Float32Array( geometry.vertices.length * 3 );
		this.addAttribute( 'position', new THREE.BufferAttribute( positions, 3 ).copyVector3sArray( geometry.vertices ) );

		if ( geometry.normals.length > 0 ) {

			var normals = new Float32Array( geometry.normals.length * 3 );
			this.addAttribute( 'normal', new THREE.BufferAttribute( normals, 3 ).copyVector3sArray( geometry.normals ) );

		}

		if ( geometry.colors.length > 0 ) {

			var colors = new Float32Array( geometry.colors.length * 3 );
			this.addAttribute( 'color', new THREE.BufferAttribute( colors, 3 ).copyColorsArray( geometry.colors ) );

		}

		if ( geometry.uvs.length > 0 ) {

			var uvs = new Float32Array( geometry.uvs.length * 2 );
			this.addAttribute( 'uv', new THREE.BufferAttribute( uvs, 2 ).copyVector2sArray( geometry.uvs ) );

		}

		if ( geometry.uvs2.length > 0 ) {

			var uvs2 = new Float32Array( geometry.uvs2.length * 2 );
			this.addAttribute( 'uv2', new THREE.BufferAttribute( uvs2, 2 ).copyVector2sArray( geometry.uvs2 ) );

		}

		if ( geometry.indices.length > 0 ) {

			var TypeArray = geometry.vertices.length > 65535 ? Uint32Array : Uint16Array;
			var indices = new TypeArray( geometry.indices.length * 3 );
			this.setIndex( new THREE.BufferAttribute( indices, 1 ).copyIndicesArray( geometry.indices ) );

		}

		// groups

		this.groups = geometry.groups;

		// morphs

		for ( var name in geometry.morphTargets ) {

			var array = [];
			var morphTargets = geometry.morphTargets[ name ];

			for ( var i = 0, l = morphTargets.length; i < l; i ++ ) {

				var morphTarget = morphTargets[ i ];

				var attribute = new THREE.Float32Attribute( morphTarget.length * 3, 3 );

				array.push( attribute.copyVector3sArray( morphTarget ) );

			}

			this.morphAttributes[ name ] = array;

		}

		// skinning

		if ( geometry.skinIndices.length > 0 ) {

			var skinIndices = new THREE.Float32Attribute( geometry.skinIndices.length * 4, 4 );
			this.addAttribute( 'skinIndex', skinIndices.copyVector4sArray( geometry.skinIndices ) );

		}

		if ( geometry.skinWeights.length > 0 ) {

			var skinWeights = new THREE.Float32Attribute( geometry.skinWeights.length * 4, 4 );
			this.addAttribute( 'skinWeight', skinWeights.copyVector4sArray( geometry.skinWeights ) );

		}

		//

		if ( geometry.boundingSphere !== null ) {

			this.boundingSphere = geometry.boundingSphere.clone();

		}

		if ( geometry.boundingBox !== null ) {

			this.boundingBox = geometry.boundingBox.clone();

		}

		return this;

	},

	computeBoundingBox: function () {

		var vector = new THREE.Vector3();

		return function () {

			if ( this.boundingBox === null ) {

				this.boundingBox = new THREE.Box3();

			}

			var positions = this.attributes.position.array;

			if ( positions ) {

				this.boundingBox.setFromArray( positions );

			}

			if ( positions === undefined || positions.length === 0 ) {

				this.boundingBox.min.set( 0, 0, 0 );
				this.boundingBox.max.set( 0, 0, 0 );

			}

			if ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {

				console.error( 'THREE.BufferGeometry.computeBoundingBox: Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this );

			}

		};

	}(),

	computeBoundingSphere: function () {

		var box = new THREE.Box3();
		var vector = new THREE.Vector3();

		return function () {

			if ( this.boundingSphere === null ) {

				this.boundingSphere = new THREE.Sphere();

			}

			var positions = this.attributes.position.array;

			if ( positions ) {

				var center = this.boundingSphere.center;

				box.setFromArray( positions );
				box.center( center );

				// hoping to find a boundingSphere with a radius smaller than the
				// boundingSphere of the boundingBox: sqrt(3) smaller in the best case

				var maxRadiusSq = 0;

				for ( var i = 0, il = positions.length; i < il; i += 3 ) {

					vector.fromArray( positions, i );
					maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( vector ) );

				}

				this.boundingSphere.radius = Math.sqrt( maxRadiusSq );

				if ( isNaN( this.boundingSphere.radius ) ) {

					console.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this );

				}

			}

		};

	}(),

	computeFaceNormals: function () {

		// backwards compatibility

	},

	computeVertexNormals: function () {

		var index = this.index;
		var attributes = this.attributes;
		var groups = this.groups;

		if ( attributes.position ) {

			var positions = attributes.position.array;

			if ( attributes.normal === undefined ) {

				this.addAttribute( 'normal', new THREE.BufferAttribute( new Float32Array( positions.length ), 3 ) );

			} else {

				// reset existing normals to zero

				var array = attributes.normal.array;

				for ( var i = 0, il = array.length; i < il; i ++ ) {

					array[ i ] = 0;

				}

			}

			var normals = attributes.normal.array;

			var vA, vB, vC,

			pA = new THREE.Vector3(),
			pB = new THREE.Vector3(),
			pC = new THREE.Vector3(),

			cb = new THREE.Vector3(),
			ab = new THREE.Vector3();

			// indexed elements

			if ( index ) {

				var indices = index.array;

				if ( groups.length === 0 ) {

					this.addGroup( 0, indices.length );

				}

				for ( var j = 0, jl = groups.length; j < jl; ++ j ) {

					var group = groups[ j ];

					var start = group.start;
					var count = group.count;

					for ( var i = start, il = start + count; i < il; i += 3 ) {

						vA = indices[ i + 0 ] * 3;
						vB = indices[ i + 1 ] * 3;
						vC = indices[ i + 2 ] * 3;

						pA.fromArray( positions, vA );
						pB.fromArray( positions, vB );
						pC.fromArray( positions, vC );

						cb.subVectors( pC, pB );
						ab.subVectors( pA, pB );
						cb.cross( ab );

						normals[ vA ] += cb.x;
						normals[ vA + 1 ] += cb.y;
						normals[ vA + 2 ] += cb.z;

						normals[ vB ] += cb.x;
						normals[ vB + 1 ] += cb.y;
						normals[ vB + 2 ] += cb.z;

						normals[ vC ] += cb.x;
						normals[ vC + 1 ] += cb.y;
						normals[ vC + 2 ] += cb.z;

					}

				}

			} else {

				// non-indexed elements (unconnected triangle soup)

				for ( var i = 0, il = positions.length; i < il; i += 9 ) {

					pA.fromArray( positions, i );
					pB.fromArray( positions, i + 3 );
					pC.fromArray( positions, i + 6 );

					cb.subVectors( pC, pB );
					ab.subVectors( pA, pB );
					cb.cross( ab );

					normals[ i ] = cb.x;
					normals[ i + 1 ] = cb.y;
					normals[ i + 2 ] = cb.z;

					normals[ i + 3 ] = cb.x;
					normals[ i + 4 ] = cb.y;
					normals[ i + 5 ] = cb.z;

					normals[ i + 6 ] = cb.x;
					normals[ i + 7 ] = cb.y;
					normals[ i + 8 ] = cb.z;

				}

			}

			this.normalizeNormals();

			attributes.normal.needsUpdate = true;

		}

	},

	merge: function ( geometry, offset ) {

		if ( geometry instanceof THREE.BufferGeometry === false ) {

			console.error( 'THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry );
			return;

		}

		if ( offset === undefined ) offset = 0;

		var attributes = this.attributes;

		for ( var key in attributes ) {

			if ( geometry.attributes[ key ] === undefined ) continue;

			var attribute1 = attributes[ key ];
			var attributeArray1 = attribute1.array;

			var attribute2 = geometry.attributes[ key ];
			var attributeArray2 = attribute2.array;

			var attributeSize = attribute2.itemSize;

			for ( var i = 0, j = attributeSize * offset; i < attributeArray2.length; i ++, j ++ ) {

				attributeArray1[ j ] = attributeArray2[ i ];

			}

		}

		return this;

	},

	normalizeNormals: function () {

		var normals = this.attributes.normal.array;

		var x, y, z, n;

		for ( var i = 0, il = normals.length; i < il; i += 3 ) {

			x = normals[ i ];
			y = normals[ i + 1 ];
			z = normals[ i + 2 ];

			n = 1.0 / Math.sqrt( x * x + y * y + z * z );

			normals[ i ] *= n;
			normals[ i + 1 ] *= n;
			normals[ i + 2 ] *= n;

		}

	},

	toNonIndexed: function () {

		if ( this.index === null ) {

			console.warn( 'THREE.BufferGeometry.toNonIndexed(): Geometry is already non-indexed.' );
			return this;

		}

		var geometry2 = new THREE.BufferGeometry();

		var indices = this.index.array;
		var attributes = this.attributes;

		for ( var name in attributes ) {

			var attribute = attributes[ name ];

			var array = attribute.array;
			var itemSize = attribute.itemSize;

			var array2 = new array.constructor( indices.length * itemSize );

			var index = 0, index2 = 0;

			for ( var i = 0, l = indices.length; i < l; i ++ ) {

				index = indices[ i ] * itemSize;

				for ( var j = 0; j < itemSize; j ++ ) {

					array2[ index2 ++ ] = array[ index ++ ];

				}

			}

			geometry2.addAttribute( name, new THREE.BufferAttribute( array2, itemSize ) );

		}

		return geometry2;

	},

	toJSON: function () {

		var data = {
			metadata: {
				version: 4.4,
				type: 'BufferGeometry',
				generator: 'BufferGeometry.toJSON'
			}
		};

		// standard BufferGeometry serialization

		data.uuid = this.uuid;
		data.type = this.type;
		if ( this.name !== '' ) data.name = this.name;

		if ( this.parameters !== undefined ) {

			var parameters = this.parameters;

			for ( var key in parameters ) {

				if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];

			}

			return data;

		}

		data.data = { attributes: {} };

		var index = this.index;

		if ( index !== null ) {

			var array = Array.prototype.slice.call( index.array );

			data.data.index = {
				type: index.array.constructor.name,
				array: array
			};

		}

		var attributes = this.attributes;

		for ( var key in attributes ) {

			var attribute = attributes[ key ];

			var array = Array.prototype.slice.call( attribute.array );

			data.data.attributes[ key ] = {
				itemSize: attribute.itemSize,
				type: attribute.array.constructor.name,
				array: array
			};

		}

		var groups = this.groups;

		if ( groups.length > 0 ) {

			data.data.groups = JSON.parse( JSON.stringify( groups ) );

		}

		var boundingSphere = this.boundingSphere;

		if ( boundingSphere !== null ) {

			data.data.boundingSphere = {
				center: boundingSphere.center.toArray(),
				radius: boundingSphere.radius
			};

		}

		return data;

	},

	clone: function () {

		/*
		// Handle primitives

		var parameters = this.parameters;

		if ( parameters !== undefined ) {

			var values = [];

			for ( var key in parameters ) {

				values.push( parameters[ key ] );

			}

			var geometry = Object.create( this.constructor.prototype );
			this.constructor.apply( geometry, values );
			return geometry;

		}

		return new this.constructor().copy( this );
		*/

		return new THREE.BufferGeometry().copy( this );

	},

	copy: function ( source ) {

		var index = source.index;

		if ( index !== null ) {

			this.setIndex( index.clone() );

		}

		var attributes = source.attributes;

		for ( var name in attributes ) {

			var attribute = attributes[ name ];
			this.addAttribute( name, attribute.clone() );

		}

		var groups = source.groups;

		for ( var i = 0, l = groups.length; i < l; i ++ ) {

			var group = groups[ i ];
			this.addGroup( group.start, group.count );

		}

		return this;

	},

	dispose: function () {

		this.dispatchEvent( { type: 'dispose' } );

	}

};

THREE.EventDispatcher.prototype.apply( THREE.BufferGeometry.prototype );

THREE.BufferGeometry.MaxIndex = 65535;

// File:src/core/InstancedBufferGeometry.js

/**
 * @author benaadams / https://twitter.com/ben_a_adams
 */

THREE.InstancedBufferGeometry = function () {

	THREE.BufferGeometry.call( this );

	this.type = 'InstancedBufferGeometry';
	this.maxInstancedCount = undefined;

};

THREE.InstancedBufferGeometry.prototype = Object.create( THREE.BufferGeometry.prototype );
THREE.InstancedBufferGeometry.prototype.constructor = THREE.InstancedBufferGeometry;

THREE.InstancedBufferGeometry.prototype.addGroup = function ( start, count, instances ) {

	this.groups.push( {

		start: start,
		count: count,
		instances: instances

	} );

};

THREE.InstancedBufferGeometry.prototype.copy = function ( source ) {

	var index = source.index;

	if ( index !== null ) {

		this.setIndex( index.clone() );

	}

	var attributes = source.attributes;

	for ( var name in attributes ) {

		var attribute = attributes[ name ];
		this.addAttribute( name, attribute.clone() );

	}

	var groups = source.groups;

	for ( var i = 0, l = groups.length; i < l; i ++ ) {

		var group = groups[ i ];
		this.addGroup( group.start, group.count, group.instances );

	}

	return this;

};

THREE.EventDispatcher.prototype.apply( THREE.InstancedBufferGeometry.prototype );

// File:src/core/Uniform.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Uniform = function ( type, value ) {

	this.type = type;
	this.value = value;

	this.dynamic = false;

};

THREE.Uniform.prototype = {

	constructor: THREE.Uniform,

	onUpdate: function ( callback ) {

		this.dynamic = true;
		this.onUpdateCallback = callback;

		return this;

	}

};

// File:src/animation/AnimationClip.js

/**
 *
 * Reusable set of Tracks that represent an animation.
 *
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 */

THREE.AnimationClip = function ( name, duration, tracks ) {

	this.name = name || THREE.Math.generateUUID();
	this.tracks = tracks;
	this.duration = ( duration !== undefined ) ? duration : -1;

	// this means it should figure out its duration by scanning the tracks
	if ( this.duration < 0 ) {

		this.resetDuration();

	}

	// maybe only do these on demand, as doing them here could potentially slow down loading
	// but leaving these here during development as this ensures a lot of testing of these functions
	this.trim();
	this.optimize();

};

THREE.AnimationClip.prototype = {

	constructor: THREE.AnimationClip,

	resetDuration: function() {

		var tracks = this.tracks,
			duration = 0;

		for ( var i = 0, n = tracks.length; i !== n; ++ i ) {

			var track = this.tracks[ i ];

			duration = Math.max(
					duration, track.times[ track.times.length - 1 ] );

		}

		this.duration = duration;

	},

	trim: function() {

		for ( var i = 0; i < this.tracks.length; i ++ ) {

			this.tracks[ i ].trim( 0, this.duration );

		}

		return this;

	},

	optimize: function() {

		for ( var i = 0; i < this.tracks.length; i ++ ) {

			this.tracks[ i ].optimize();

		}

		return this;

	}

};

// Static methods:

Object.assign( THREE.AnimationClip, {

	parse: function( json ) {

		var tracks = [],
			jsonTracks = json.tracks,
			frameTime = 1.0 / ( json.fps || 1.0 );

		for ( var i = 0, n = jsonTracks.length; i !== n; ++ i ) {

			tracks.push( THREE.KeyframeTrack.parse( jsonTracks[ i ] ).scale( frameTime ) );

		}

		return new THREE.AnimationClip( json.name, json.duration, tracks );

	},


	toJSON: function( clip ) {

		var tracks = [],
			clipTracks = clip.tracks;

		var json = {

			'name': clip.name,
			'duration': clip.duration,
			'tracks': tracks

		};

		for ( var i = 0, n = clipTracks.length; i !== n; ++ i ) {

			tracks.push( THREE.KeyframeTrack.toJSON( clipTracks[ i ] ) );

		}

		return json;

	},


	CreateFromMorphTargetSequence: function( name, morphTargetSequence, fps ) {

		var numMorphTargets = morphTargetSequence.length;
		var tracks = [];

		for ( var i = 0; i < numMorphTargets; i ++ ) {

			var times = [];
			var values = [];

			times.push(
					( i + numMorphTargets - 1 ) % numMorphTargets,
					i,
					( i + 1 ) % numMorphTargets );

			values.push( 0, 1, 0 );

			var order = THREE.AnimationUtils.getKeyframeOrder( times );
			times = THREE.AnimationUtils.sortedArray( times, 1, order );
			values = THREE.AnimationUtils.sortedArray( values, 1, order );

			// if there is a key at the first frame, duplicate it as the
			// last frame as well for perfect loop.
			if ( times[ 0 ] === 0 ) {

				times.push( numMorphTargets );
				values.push( values[ 0 ] );

			}

			tracks.push(
					new THREE.NumberKeyframeTrack(
						'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',
						times, values
					).scale( 1.0 / fps ) );
		}

		return new THREE.AnimationClip( name, -1, tracks );

	},

	findByName: function( clipArray, name ) {

		for ( var i = 0; i < clipArray.length; i ++ ) {

			if ( clipArray[ i ].name === name ) {

				return clipArray[ i ];

			}
		}

		return null;

	},

	CreateClipsFromMorphTargetSequences: function( morphTargets, fps ) {

		var animationToMorphTargets = {};

		// tested with https://regex101.com/ on trick sequences
		// such flamingo_flyA_003, flamingo_run1_003, crdeath0059
		var pattern = /^([\w-]*?)([\d]+)$/;

		// sort morph target names into animation groups based
		// patterns like Walk_001, Walk_002, Run_001, Run_002
		for ( var i = 0, il = morphTargets.length; i < il; i ++ ) {

			var morphTarget = morphTargets[ i ];
			var parts = morphTarget.name.match( pattern );

			if ( parts && parts.length > 1 ) {

				var name = parts[ 1 ];

				var animationMorphTargets = animationToMorphTargets[ name ];
				if ( ! animationMorphTargets ) {

					animationToMorphTargets[ name ] = animationMorphTargets = [];

				}

				animationMorphTargets.push( morphTarget );

			}

		}

		var clips = [];

		for ( var name in animationToMorphTargets ) {

			clips.push( THREE.AnimationClip.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps ) );

		}

		return clips;

	},

	// parse the animation.hierarchy format
	parseAnimation: function( animation, bones, nodeName ) {

		if ( ! animation ) {

			console.error( "  no animation in JSONLoader data" );
			return null;

		}

		var addNonemptyTrack = function(
				trackType, trackName, animationKeys, propertyName, destTracks ) {

			// only return track if there are actually keys.
			if ( animationKeys.length !== 0 ) {

				var times = [];
				var values = [];

				THREE.AnimationUtils.flattenJSON(
						animationKeys, times, values, propertyName );

				// empty keys are filtered out, so check again
				if ( times.length !== 0 ) {

					destTracks.push( new trackType( trackName, times, values ) );

				}

			}

		};

		var tracks = [];

		var clipName = animation.name || 'default';
		// automatic length determination in AnimationClip.
		var duration = animation.length || -1;
		var fps = animation.fps || 30;

		var hierarchyTracks = animation.hierarchy || [];

		for ( var h = 0; h < hierarchyTracks.length; h ++ ) {

			var animationKeys = hierarchyTracks[ h ].keys;

			// skip empty tracks
			if ( ! animationKeys || animationKeys.length == 0 ) continue;

			// process morph targets in a way exactly compatible
			// with AnimationHandler.init( animation )
			if ( animationKeys[0].morphTargets ) {

				// figure out all morph targets used in this track
				var morphTargetNames = {};
				for ( var k = 0; k < animationKeys.length; k ++ ) {

					if ( animationKeys[k].morphTargets ) {

						for ( var m = 0; m < animationKeys[k].morphTargets.length; m ++ ) {

							morphTargetNames[ animationKeys[k].morphTargets[m] ] = -1;
						}

					}

				}

				// create a track for each morph target with all zero
				// morphTargetInfluences except for the keys in which
				// the morphTarget is named.
				for ( var morphTargetName in morphTargetNames ) {

					var times = [];
					var values = [];

					for ( var m = 0;
							m !== animationKeys[k].morphTargets.length; ++ m ) {

						var animationKey = animationKeys[k];

						times.push( animationKey.time );
						values.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 )

					}

					tracks.push( new THREE.NumberKeyframeTrack(
							'.morphTargetInfluence[' + morphTargetName + ']', times, values ) );

				}

				duration = morphTargetNames.length * ( fps || 1.0 );

			} else {
				// ...assume skeletal animation

				var boneName = '.bones[' + bones[ h ].name + ']';

				addNonemptyTrack(
						THREE.VectorKeyframeTrack, boneName + '.position',
						animationKeys, 'pos', tracks );

				addNonemptyTrack(
						THREE.QuaternionKeyframeTrack, boneName + '.quaternion',
						animationKeys, 'rot', tracks );

				addNonemptyTrack(
						THREE.VectorKeyframeTrack, boneName + '.scale',
						animationKeys, 'scl', tracks );

			}

		}

		if ( tracks.length === 0 ) {

			return null;

		}

		var clip = new THREE.AnimationClip( clipName, duration, tracks );

		return clip;

	}

} );


// File:src/animation/AnimationMixer.js

/**
 *
 * Player for AnimationClips.
 *
 *
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 * @author tschw
 */

THREE.AnimationMixer = function( root ) {

	this._root = root;
	this._initMemoryManager();
	this._accuIndex = 0;

	this.time = 0;

	this.timeScale = 1.0;

};

THREE.AnimationMixer.prototype = {

	constructor: THREE.AnimationMixer,

	// return an action for a clip optionally using a custom root target
	// object (this method allocates a lot of dynamic memory in case a
	// previously unknown clip/root combination is specified)
	clipAction: function( clip, optionalRoot ) {

		var root = optionalRoot || this._root,
			rootUuid = root.uuid,
			clipName = ( typeof clip === 'string' ) ? clip : clip.name,
			clipObject = ( clip !== clipName ) ? clip : null,

			actionsForClip = this._actionsByClip[ clipName ],
			prototypeAction;

		if ( actionsForClip !== undefined ) {

			var existingAction =
					actionsForClip.actionByRoot[ rootUuid ];

			if ( existingAction !== undefined ) {

				return existingAction;

			}

			// we know the clip, so we don't have to parse all
			// the bindings again but can just copy
			prototypeAction = actionsForClip.knownActions[ 0 ];

			// also, take the clip from the prototype action
			clipObject = prototypeAction._clip;

			if ( clip !== clipName && clip !== clipObject ) {

				throw new Error(
						"Different clips with the same name detected!" );

			}

		}

		// clip must be known when specified via string
		if ( clipObject === null ) return null;

		// allocate all resources required to run it
		var newAction = new THREE.
				AnimationMixer._Action( this, clipObject, optionalRoot );

		this._bindAction( newAction, prototypeAction );

		// and make the action known to the memory manager
		this._addInactiveAction( newAction, clipName, rootUuid );

		return newAction;

	},

	// get an existing action
	existingAction: function( clip, optionalRoot ) {

		var root = optionalRoot || this._root,
			rootUuid = root.uuid,
			clipName = ( typeof clip === 'string' ) ? clip : clip.name,
			actionsForClip = this._actionsByClip[ clipName ];

		if ( actionsForClip !== undefined ) {

			return actionsForClip.actionByRoot[ rootUuid ] || null;

		}

		return null;

	},

	// deactivates all previously scheduled actions
	stopAllAction: function() {

		var actions = this._actions,
			nActions = this._nActiveActions,
			bindings = this._bindings,
			nBindings = this._nActiveBindings;

		this._nActiveActions = 0;
		this._nActiveBindings = 0;

		for ( var i = 0; i !== nActions; ++ i ) {

			actions[ i ].reset();

		}

		for ( var i = 0; i !== nBindings; ++ i ) {

			bindings[ i ].useCount = 0;

		}

		return this;

	},

	// advance the time and update apply the animation
	update: function( deltaTime ) {

		deltaTime *= this.timeScale;

		var actions = this._actions,
			nActions = this._nActiveActions,

			time = this.time += deltaTime,
			timeDirection = Math.sign( deltaTime ),

			accuIndex = this._accuIndex ^= 1;

		// run active actions

		for ( var i = 0; i !== nActions; ++ i ) {

			var action = actions[ i ];

			if ( action.enabled ) {

				action._update( time, deltaTime, timeDirection, accuIndex );

			}

		}

		// update scene graph

		var bindings = this._bindings,
			nBindings = this._nActiveBindings;

		for ( var i = 0; i !== nBindings; ++ i ) {

			bindings[ i ].apply( accuIndex );

		}

		return this;

	},

	// return this mixer's root target object
	getRoot: function() {

		return this._root;

	},

	// free all resources specific to a particular clip
	uncacheClip: function( clip ) {

		var actions = this._actions,
			clipName = clip.name,
			actionsByClip = this._actionsByClip,
			actionsForClip = actionsByClip[ clipName ];

		if ( actionsForClip !== undefined ) {

			// note: just calling _removeInactiveAction would mess up the
			// iteration state and also require updating the state we can
			// just throw away

			var actionsToRemove = actionsForClip.knownActions;

			for ( var i = 0, n = actionsToRemove.length; i !== n; ++ i ) {

				var action = actionsToRemove[ i ];

				this._deactivateAction( action );

				var cacheIndex = action._cacheIndex,
					lastInactiveAction = actions[ actions.length - 1 ];

				action._cacheIndex = null;
				action._byClipCacheIndex = null;

				lastInactiveAction._cacheIndex = cacheIndex;
				actions[ cacheIndex ] = lastInactiveAction;
				actions.pop();

				this._removeInactiveBindingsForAction( action );

			}

			delete actionsByClip[ clipName ];

		}

	},

	// free all resources specific to a particular root target object
	uncacheRoot: function( root ) {

		var rootUuid = root.uuid,
			actionsByClip = this._actionsByClip;

		for ( var clipName in actionsByClip ) {

			var actionByRoot = actionsByClip[ clipName ].actionByRoot,
				action = actionByRoot[ rootUuid ];

			if ( action !== undefined ) {

				this._deactivateAction( action );
				this._removeInactiveAction( action );

			}

		}

		var bindingsByRoot = this._bindingsByRootAndName,
			bindingByName = bindingsByRoot[ rootUuid ];

		if ( bindingByName !== undefined ) {

			for ( var trackName in bindingByName ) {

				var binding = bindingByName[ trackName ];
				binding.restoreOriginalState();
				this._removeInactiveBinding( binding );

			}

		}

	},

	// remove a targeted clip from the cache
	uncacheAction: function( clip, optionalRoot ) {

		var action = this.existingAction( clip, optionalRoot );

		if ( action !== null ) {

			this._deactivateAction( action );
			this._removeInactiveAction( action );

		}

	}

};

THREE.EventDispatcher.prototype.apply( THREE.AnimationMixer.prototype );

THREE.AnimationMixer._Action =
		function( mixer, clip, localRoot ) {

	this._mixer = mixer;
	this._clip = clip;
	this._localRoot = localRoot || null;

	var tracks = clip.tracks,
		nTracks = tracks.length,
		interpolants = new Array( nTracks );

	var interpolantSettings = {
			endingStart: 	THREE.ZeroCurvatureEnding,
			endingEnd:		THREE.ZeroCurvatureEnding
	};

	for ( var i = 0; i !== nTracks; ++ i ) {

		var interpolant = tracks[ i ].createInterpolant( null );
		interpolants[ i ] = interpolant;
		interpolant.settings = interpolantSettings

	}

	this._interpolantSettings = interpolantSettings;

	this._interpolants = interpolants;	// bound by the mixer

	// inside: PropertyMixer (managed by the mixer)
	this._propertyBindings = new Array( nTracks );

	this._cacheIndex = null;			// for the memory manager
	this._byClipCacheIndex = null;		// for the memory manager

	this._timeScaleInterpolant = null;
	this._weightInterpolant = null;

	this.loop = THREE.LoopRepeat;
	this._loopCount = -1;

	// global mixer time when the action is to be started
	// it's set back to 'null' upon start of the action
	this._startTime = null;

	// scaled local time of the action
	// gets clamped or wrapped to 0..clip.duration according to loop
	this.time = 0;

	this.timeScale = 1;
	this._effectiveTimeScale = 1;

	this.weight = 1;
	this._effectiveWeight = 1;

	this.repetitions = Infinity; 		// no. of repetitions when looping

	this.paused = false;				// false -> zero effective time scale
	this.enabled = true;				// true -> zero effective weight

	this.clampWhenFinished 	= false;	// keep feeding the last frame?

	this.zeroSlopeAtStart 	= true;		// for smooth interpolation w/o separate
	this.zeroSlopeAtEnd		= true;		// clips for start, loop and end

};

THREE.AnimationMixer._Action.prototype = {

	constructor: THREE.AnimationMixer._Action,

	// State & Scheduling

	play: function() {

		this._mixer._activateAction( this );

		return this;

	},

	stop: function() {

		this._mixer._deactivateAction( this );

		return this.reset();

	},

	reset: function() {

		this.paused = false;
		this.enabled = true;

		this.time = 0;			// restart clip
		this._loopCount = -1;	// forget previous loops
		this._startTime = null;	// forget scheduling

		return this.stopFading().stopWarping();

	},

	isRunning: function() {

		var start = this._startTime;

		return this.enabled && ! this.paused && this.timeScale !== 0 &&
				this._startTime === null && this._mixer._isActiveAction( this )

	},

	// return true when play has been called
	isScheduled: function() {

		return this._mixer._isActiveAction( this );

	},

	startAt: function( time ) {

		this._startTime = time;

		return this;

	},

	setLoop: function( mode, repetitions ) {

		this.loop = mode;
		this.repetitions = repetitions;

		return this;

	},

	// Weight

	// set the weight stopping any scheduled fading
	// although .enabled = false yields an effective weight of zero, this
	// method does *not* change .enabled, because it would be confusing
	setEffectiveWeight: function( weight ) {

		this.weight = weight;

		// note: same logic as when updated at runtime
		this._effectiveWeight = this.enabled ? weight : 0;

		return this.stopFading();

	},

	// return the weight considering fading and .enabled
	getEffectiveWeight: function() {

		return this._effectiveWeight;

	},

	fadeIn: function( duration ) {

		return this._scheduleFading( duration, 0, 1 );

	},

	fadeOut: function( duration ) {

		return this._scheduleFading( duration, 1, 0 );

	},

	crossFadeFrom: function( fadeOutAction, duration, warp ) {

		var mixer = this._mixer;

		fadeOutAction.fadeOut( duration );
		this.fadeIn( duration );

		if( warp ) {

			var fadeInDuration = this._clip.duration,
				fadeOutDuration = fadeOutAction._clip.duration,

				startEndRatio = fadeOutDuration / fadeInDuration,
				endStartRatio = fadeInDuration / fadeOutDuration;

			fadeOutAction.warp( 1.0, startEndRatio, duration );
			this.warp( endStartRatio, 1.0, duration );

		}

		return this;

	},

	crossFadeTo: function( fadeInAction, duration, warp ) {

		return fadeInAction.crossFadeFrom( this, duration, warp );

	},

	stopFading: function() {

		var weightInterpolant = this._weightInterpolant;

		if ( weightInterpolant !== null ) {

			this._weightInterpolant = null;
			this._mixer._takeBackControlInterpolant( weightInterpolant );

		}

		return this;

	},

	// Time Scale Control

	// set the weight stopping any scheduled warping
	// although .paused = true yields an effective time scale of zero, this
	// method does *not* change .paused, because it would be confusing
	setEffectiveTimeScale: function( timeScale ) {

		this.timeScale = timeScale;
		this._effectiveTimeScale = this.paused ? 0 :timeScale;

		return this.stopWarping();

	},

	// return the time scale considering warping and .paused
	getEffectiveTimeScale: function() {

		return this._effectiveTimeScale;

	},

	setDuration: function( duration ) {

		this.timeScale = this._clip.duration / duration;

		return this.stopWarping();

	},

	syncWith: function( action ) {

		this.time = action.time;
		this.timeScale = action.timeScale;

		return this.stopWarping();

	},

	halt: function( duration ) {

		return this.warp( this._currentTimeScale, 0, duration );

	},

	warp: function( startTimeScale, endTimeScale, duration ) {

		var mixer = this._mixer, now = mixer.time,
			interpolant = this._timeScaleInterpolant,

			timeScale = this.timeScale;

		if ( interpolant === null ) {

			interpolant = mixer._lendControlInterpolant(),
			this._timeScaleInterpolant = interpolant;

		}

		var times = interpolant.parameterPositions,
			values = interpolant.sampleValues;

		times[ 0 ] = now;
		times[ 1 ] = now + duration;

		values[ 0 ] = startTimeScale / timeScale;
		values[ 1 ] = endTimeScale / timeScale;

		return this;

	},

	stopWarping: function() {

		var timeScaleInterpolant = this._timeScaleInterpolant;

		if ( timeScaleInterpolant !== null ) {

			this._timeScaleInterpolant = null;
			this._mixer._takeBackControlInterpolant( timeScaleInterpolant );

		}

		return this;

	},

	// Object Accessors

	getMixer: function() {

		return this._mixer;

	},

	getClip: function() {

		return this._clip;

	},

	getRoot: function() {

		return this._localRoot || this._mixer._root;

	},

	// Interna

	_update: function( time, deltaTime, timeDirection, accuIndex ) {
		// called by the mixer

		var startTime = this._startTime;

		if ( startTime !== null ) {

			// check for scheduled start of action

			var timeRunning = ( time - startTime ) * timeDirection;
			if ( timeRunning < 0 || timeDirection === 0 ) {

				return; // yet to come / don't decide when delta = 0

			}

			// start

			this._startTime = null; // unschedule
			deltaTime = timeDirection * timeRunning;

		}

		// apply time scale and advance time

		deltaTime *= this._updateTimeScale( time );
		var clipTime = this._updateTime( deltaTime );

		// note: _updateTime may disable the action resulting in
		// an effective weight of 0

		var weight = this._updateWeight( time );

		if ( weight > 0 ) {

			var interpolants = this._interpolants;
			var propertyMixers = this._propertyBindings;

			for ( var j = 0, m = interpolants.length; j !== m; ++ j ) {

				interpolants[ j ].evaluate( clipTime );
				propertyMixers[ j ].accumulate( accuIndex, weight );

			}

		}

	},

	_updateWeight: function( time ) {

		var weight = 0;

		if ( this.enabled ) {

			weight = this.weight;
			var interpolant = this._weightInterpolant;

			if ( interpolant !== null ) {

				var interpolantValue = interpolant.evaluate( time )[ 0 ];

				weight *= interpolantValue;

				if ( time > interpolant.parameterPositions[ 1 ] ) {

					this.stopFading();

					if ( interpolantValue === 0 ) {

						// faded out, disable
						this.enabled = false;

					}

				}

			}

		}

		this._effectiveWeight = weight;
		return weight;

	},

	_updateTimeScale: function( time ) {

		var timeScale = 0;

		if ( ! this.paused ) {

			timeScale = this.timeScale;

			var interpolant = this._timeScaleInterpolant;

			if ( interpolant !== null ) {

				var interpolantValue = interpolant.evaluate( time )[ 0 ];

				timeScale *= interpolantValue;

				if ( time > interpolant.parameterPositions[ 1 ] ) {

					this.stopWarping();

					if ( timeScale === 0 ) {

						// motion has halted, pause
						this.pause = true;

					} else {

						// warp done - apply final time scale
						this.timeScale = timeScale;

					}

				}

			}

		}

		this._effectiveTimeScale = timeScale;
		return timeScale;

	},

	_updateTime: function( deltaTime ) {

		var time = this.time + deltaTime;

		if ( deltaTime === 0 ) return time;

		var duration = this._clip.duration,

			loop = this.loop,
			loopCount = this._loopCount,

			pingPong = false;

		switch ( loop ) {

			case THREE.LoopOnce:

				if ( loopCount === -1 ) {

					// just started

					this.loopCount = 0;
					this._setEndings( true, true, false );

				}

				if ( time >= duration ) {

					time = duration;

				} else if ( time < 0 ) {

					time = 0;

				} else break;

				// reached the end

				if ( this.clampWhenFinished ) this.pause = true;
				else this.enabled = false;

				this._mixer.dispatchEvent( {
					type: 'finished', action: this,
					direction: deltaTime < 0 ? -1 : 1
				} );

				break;

			case THREE.LoopPingPong:

				pingPong = true;

			case THREE.LoopRepeat:

				if ( loopCount === -1 ) {

					// just started

					if ( deltaTime > 0 ) {

						loopCount = 0;

						this._setEndings(
								true, this.repetitions === 0, pingPong );

					} else {

						// when looping in reverse direction, the initial
						// transition through zero counts as a repetition,
						// so leave loopCount at -1

						this._setEndings(
								this.repetitions === 0, true, pingPong );

					}

				}

				if ( time >= duration || time < 0 ) {

					// wrap around

					var loopDelta = Math.floor( time / duration ); // signed
					time -= duration * loopDelta;

					loopCount += Math.abs( loopDelta );

					var pending = this.repetitions - loopCount;

					if ( pending < 0 ) {

						// stop (switch state, clamp time, fire event)

						if ( this.clampWhenFinished ) this.paused = true;
						else this.enabled = false;

						time = deltaTime > 0 ? duration : 0;

						this._mixer.dispatchEvent( {
							type: 'finished', action: this,
							direction: deltaTime > 0 ? 1 : -1
						} );

						break;

					} else if ( pending === 0 ) {

						// transition to last round

						var atStart = deltaTime < 0;
						this._setEndings( atStart, ! atStart, pingPong );

					} else {

						this._setEndings( false, false, pingPong );

					}

					this._loopCount = loopCount;

					this._mixer.dispatchEvent( {
						type: 'loop', action: this, loopDelta: loopDelta
					} );

				}

				if ( loop === THREE.LoopPingPong && ( loopCount & 1 ) === 1 ) {

					// invert time for the "pong round"

					this.time = time;

					return duration - time;

				}

				break;

		}

		this.time = time;

		return time;

	},

	_setEndings: function( atStart, atEnd, pingPong ) {

		var settings = this._interpolantSettings;

		if ( pingPong ) {

			settings.endingStart 	= THREE.ZeroSlopeEnding;
			settings.endingEnd		= THREE.ZeroSlopeEnding;

		} else {

			// assuming for LoopOnce atStart == atEnd == true

			if ( atStart ) {

				settings.endingStart = this.zeroSlopeAtStart ?
						THREE.ZeroSlopeEnding : THREE.ZeroCurvatureEnding;

			} else {

				settings.endingStart = THREE.WrapAroundEnding;

			}

			if ( atEnd ) {

				settings.endingEnd = this.zeroSlopeAtEnd ?
						THREE.ZeroSlopeEnding : THREE.ZeroCurvatureEnding;

			} else {

				settings.endingEnd 	 = THREE.WrapAroundEnding;

			}

		}

	},

	_scheduleFading: function( duration, weightNow, weightThen ) {

		var mixer = this._mixer, now = mixer.time,
			interpolant = this._weightInterpolant;

		if ( interpolant === null ) {

			interpolant = mixer._lendControlInterpolant(),
			this._weightInterpolant = interpolant;

		}

		var times = interpolant.parameterPositions,
			values = interpolant.sampleValues;

		times[ 0 ] = now; 				values[ 0 ] = weightNow;
		times[ 1 ] = now + duration;	values[ 1 ] = weightThen;

		return this;

	}

};

// Implementation details:

Object.assign( THREE.AnimationMixer.prototype, {

	_bindAction: function( action, prototypeAction ) {

		var root = action._localRoot || this._root,
			tracks = action._clip.tracks,
			nTracks = tracks.length,
			bindings = action._propertyBindings,
			interpolants = action._interpolants,
			rootUuid = root.uuid,
			bindingsByRoot = this._bindingsByRootAndName,
			bindingsByName = bindingsByRoot[ rootUuid ];

		if ( bindingsByName === undefined ) {

			bindingsByName = {};
			bindingsByRoot[ rootUuid ] = bindingsByName;

		}

		for ( var i = 0; i !== nTracks; ++ i ) {

			var track = tracks[ i ],
				trackName = track.name,
				binding = bindingsByName[ trackName ];

			if ( binding !== undefined ) {

				bindings[ i ] = binding;

			} else {

				binding = bindings[ i ];

				if ( binding !== undefined ) {

					// existing binding, make sure the cache knows

					if ( binding._cacheIndex === null ) {

						++ binding.referenceCount;
						this._addInactiveBinding( binding, rootUuid, trackName );

					}

					continue;

				}

				var path = prototypeAction && prototypeAction.
						_propertyBindings[ i ].binding.parsedPath;

				binding = new THREE.PropertyMixer(
						THREE.PropertyBinding.create( root, trackName, path ),
						track.ValueTypeName, track.getValueSize() );

				++ binding.referenceCount;
				this._addInactiveBinding( binding, rootUuid, trackName );

				bindings[ i ] = binding;

			}

			interpolants[ i ].resultBuffer = binding.buffer;

		}

	},

	_activateAction: function( action ) {

		if ( ! this._isActiveAction( action ) ) {

			if ( action._cacheIndex === null ) {

				// this action has been forgotten by the cache, but the user
				// appears to be still using it -> rebind

				var rootUuid = ( action._localRoot || this._root ).uuid,
					clipName = action._clip.name,
					actionsForClip = this._actionsByClip[ clipName ];

				this._bindAction( action,
						actionsForClip && actionsForClip.knownActions[ 0 ] );

				this._addInactiveAction( action, clipName, rootUuid );

			}

			var bindings = action._propertyBindings;

			// increment reference counts / sort out state
			for ( var i = 0, n = bindings.length; i !== n; ++ i ) {

				var binding = bindings[ i ];

				if ( binding.useCount ++ === 0 ) {

					this._lendBinding( binding );
					binding.saveOriginalState();

				}

			}

			this._lendAction( action );

		}

	},

	_deactivateAction: function( action ) {

		if ( this._isActiveAction( action ) ) {

			var bindings = action._propertyBindings;

			// decrement reference counts / sort out state
			for ( var i = 0, n = bindings.length; i !== n; ++ i ) {

				var binding = bindings[ i ];

				if ( -- binding.useCount === 0 ) {

					binding.restoreOriginalState();
					this._takeBackBinding( binding );

				}

			}

			this._takeBackAction( action );

		}

	},

	// Memory manager

	_initMemoryManager: function() {

		this._actions = []; // 'nActiveActions' followed by inactive ones
		this._nActiveActions = 0;

		this._actionsByClip = {};
		// inside:
		// {
		// 		knownActions: Array< _Action >	- used as prototypes
		// 		actionByRoot: _Action			- lookup
		// }


		this._bindings = []; // 'nActiveBindings' followed by inactive ones
		this._nActiveBindings = 0;

		this._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >


		this._controlInterpolants = []; // same game as above
		this._nActiveControlInterpolants = 0;

		var scope = this;

		this.stats = {

			actions: {
				get total() { return scope._actions.length; },
				get inUse() { return scope._nActiveActions; }
			},
			bindings: {
				get total() { return scope._bindings.length; },
				get inUse() { return scope._nActiveBindings; }
			},
			controlInterpolants: {
				get total() { return scope._controlInterpolants.length; },
				get inUse() { return scope._nActiveControlInterpolants; }
			}

		};

	},

	// Memory management for _Action objects

	_isActiveAction: function( action ) {

		var index = action._cacheIndex;
		return index !== null && index < this._nActiveActions;

	},

	_addInactiveAction: function( action, clipName, rootUuid ) {

		var actions = this._actions,
			actionsByClip = this._actionsByClip,
			actionsForClip = actionsByClip[ clipName ];

		if ( actionsForClip === undefined ) {

			actionsForClip = {

				knownActions: [ action ],
				actionByRoot: {}

			};

			action._byClipCacheIndex = 0;

			actionsByClip[ clipName ] = actionsForClip;

		} else {

			var knownActions = actionsForClip.knownActions;

			action._byClipCacheIndex = knownActions.length;
			knownActions.push( action );

		}

		action._cacheIndex = actions.length;
		actions.push( action );

		actionsForClip.actionByRoot[ rootUuid ] = action;

	},

	_removeInactiveAction: function( action ) {

		var actions = this._actions,
			lastInactiveAction = actions[ actions.length - 1 ],
			cacheIndex = action._cacheIndex;

		lastInactiveAction._cacheIndex = cacheIndex;
		actions[ cacheIndex ] = lastInactiveAction;
		actions.pop();

		action._cacheIndex = null;


		var clipName = action._clip.name,
			actionsByClip = this._actionsByClip,
			actionsForClip = actionsByClip[ clipName ],
			knownActionsForClip = actionsForClip.knownActions,

			lastKnownAction =
				knownActionsForClip[ knownActionsForClip.length - 1 ],

			byClipCacheIndex = action._byClipCacheIndex;

		lastKnownAction._byClipCacheIndex = byClipCacheIndex;
		knownActionsForClip[ byClipCacheIndex ] = lastKnownAction;
		knownActionsForClip.pop();

		action._byClipCacheIndex = null;


		var actionByRoot = actionsForClip.actionByRoot,
			rootUuid = ( actions._localRoot || this._root ).uuid;

		delete actionByRoot[ rootUuid ];

		if ( knownActionsForClip.length === 0 ) {

			delete actionsByClip[ clipName ];

		}

		this._removeInactiveBindingsForAction( action );

	},

	_removeInactiveBindingsForAction: function( action ) {

		var bindings = action._propertyBindings;
		for ( var i = 0, n = bindings.length; i !== n; ++ i ) {

			var binding = bindings[ i ];

			if ( -- binding.referenceCount === 0 ) {

				this._removeInactiveBinding( binding );

			}

		}

	},

	_lendAction: function( action ) {

		// [ active actions |  inactive actions  ]
		// [  active actions >| inactive actions ]
		//                 s        a
		//                  <-swap->
		//                 a        s

		var actions = this._actions,
			prevIndex = action._cacheIndex,

			lastActiveIndex = this._nActiveActions ++,

			firstInactiveAction = actions[ lastActiveIndex ];

		action._cacheIndex = lastActiveIndex;
		actions[ lastActiveIndex ] = action;

		firstInactiveAction._cacheIndex = prevIndex;
		actions[ prevIndex ] = firstInactiveAction;

	},

	_takeBackAction: function( action ) {

		// [  active actions  | inactive actions ]
		// [ active actions |< inactive actions  ]
		//        a        s
		//         <-swap->
		//        s        a

		var actions = this._actions,
			prevIndex = action._cacheIndex,

			firstInactiveIndex = -- this._nActiveActions,

			lastActiveAction = actions[ firstInactiveIndex ];

		action._cacheIndex = firstInactiveIndex;
		actions[ firstInactiveIndex ] = action;

		lastActiveAction._cacheIndex = prevIndex;
		actions[ prevIndex ] = lastActiveAction;

	},

	// Memory management for PropertyMixer objects

	_addInactiveBinding: function( binding, rootUuid, trackName ) {

		var bindingsByRoot = this._bindingsByRootAndName,
			bindingByName = bindingsByRoot[ rootUuid ],

			bindings = this._bindings;

		if ( bindingByName === undefined ) {

			bindingByName = {};
			bindingsByRoot[ rootUuid ] = bindingByName;

		}

		bindingByName[ trackName ] = binding;

		binding._cacheIndex = bindings.length;
		bindings.push( binding );

	},

	_removeInactiveBinding: function( binding ) {

		var bindings = this._bindings,
			propBinding = binding.binding,
			rootUuid = propBinding.rootNode.uuid,
			trackName = propBinding.path,
			bindingsByRoot = this._bindingsByRootAndName,
			bindingByName = bindingsByRoot[ rootUuid ],

			lastInactiveBinding = bindings[ bindings.length - 1 ],
			cacheIndex = binding._cacheIndex;

		lastInactiveBinding._cacheIndex = cacheIndex;
		bindings[ cacheIndex ] = lastInactiveBinding;
		bindings.pop();

		delete bindingByName[ trackName ];

		remove_empty_map: {

			for ( var _ in bindingByName ) break remove_empty_map;

			delete bindingsByRoot[ rootUuid ];

		}

	},

	_lendBinding: function( binding ) {

		var bindings = this._bindings,
			prevIndex = binding._cacheIndex,

			lastActiveIndex = this._nActiveBindings ++,

			firstInactiveBinding = bindings[ lastActiveIndex ];

		binding._cacheIndex = lastActiveIndex;
		bindings[ lastActiveIndex ] = binding;

		firstInactiveBinding._cacheIndex = prevIndex;
		bindings[ prevIndex ] = firstInactiveBinding;

	},

	_takeBackBinding: function( binding ) {

		var bindings = this._bindings,
			prevIndex = binding._cacheIndex,

			firstInactiveIndex = -- this._nActiveBindings,

			lastActiveBinding = bindings[ firstInactiveIndex ];

		binding._cacheIndex = firstInactiveIndex;
		bindings[ firstInactiveIndex ] = binding;

		lastActiveBinding._cacheIndex = prevIndex;
		bindings[ prevIndex ] = lastActiveBinding;

	},


	// Memory management of Interpolants for weight and time scale

	_lendControlInterpolant: function() {

		var interpolants = this._controlInterpolants,
			lastActiveIndex = this._nActiveControlInterpolants ++,
			interpolant = interpolants[ lastActiveIndex ];

		if ( interpolant === undefined ) {

			interpolant = new THREE.LinearInterpolant(
					new Float32Array( 2 ), new Float32Array( 2 ),
						1, this._controlInterpolantsResultBuffer );

			interpolant.__cacheIndex = lastActiveIndex;
			interpolants[ lastActiveIndex ] = interpolant;

		}

		return interpolant;

	},

	_takeBackControlInterpolant: function( interpolant ) {

		var interpolants = this._controlInterpolants,
			prevIndex = interpolant.__cacheIndex,

			firstInactiveIndex = -- this._nActiveControlInterpolants,

			lastActiveInterpolant = interpolants[ firstInactiveIndex ];

		interpolant.__cacheIndex = firstInactiveIndex;
		interpolants[ firstInactiveIndex ] = interpolant;

		lastActiveInterpolant.__cacheIndex = prevIndex;
		interpolants[ prevIndex ] = lastActiveInterpolant;

	},

	_controlInterpolantsResultBuffer: new Float32Array( 1 )

} );


// File:src/animation/AnimationObjectGroup.js

/**
 *
 * A group of objects that receives a shared animation state.
 *
 * Usage:
 *
 * 	-	Add objects you would otherwise pass as 'root' to the
 * 		constructor or the .clipAction method of AnimationMixer.
 *
 * 	-	Instead pass this object as 'root'.
 *
 * 	-	You can also add and remove objects later when the mixer
 * 		is running.
 *
 * Note:
 *
 *  	Objects of this class appear as one object to the mixer,
 *  	so cache control of the individual objects must be done
 *  	on the group.
 *
 * Limitation:
 *
 * 	- 	The animated properties must be compatible among the
 * 		all objects in the group.
 *
 *  -	A single property can either be controlled through a
 *  	target group or directly, but not both.
 *
 * @author tschw
 */

THREE.AnimationObjectGroup = function( var_args ) {

	this.uuid = THREE.Math.generateUUID();

	// cached objects followed by the active ones
	this._objects = Array.prototype.slice.call( arguments );

	this.nCachedObjects_ = 0;			// threshold
	// note: read by PropertyBinding.Composite

	var indices = {};
	this._indicesByUUID = indices;		// for bookkeeping

	for ( var i = 0, n = arguments.length; i !== n; ++ i ) {

		indices[ arguments[ i ].uuid ] = i;

	}

	this._paths = [];					// inside: string
	this._parsedPaths = [];				// inside: { we don't care, here }
	this._bindings = []; 				// inside: Array< PropertyBinding >
	this._bindingsIndicesByPath = {}; 	// inside: indices in these arrays

	var scope = this;

	this.stats = {

		objects: {
			get total() { return scope._objects.length; },
			get inUse() { return this.total - scope.nCachedObjects_;  }
		},

		get bindingsPerObject() { return scope._bindings.length; }

	};

};

THREE.AnimationObjectGroup.prototype = {

	constructor: THREE.AnimationObjectGroup,

	add: function( var_args ) {

		var objects = this._objects,
			nObjects = objects.length,
			nCachedObjects = this.nCachedObjects_,
			indicesByUUID = this._indicesByUUID,
			paths = this._paths,
			parsedPaths = this._parsedPaths,
			bindings = this._bindings,
			nBindings = bindings.length;

		for ( var i = 0, n = arguments.length; i !== n; ++ i ) {

			var object = arguments[ i ],
				uuid = object.uuid,
				index = indicesByUUID[ uuid ];

			if ( index === undefined ) {

				// unknown object -> add it to the ACTIVE region

				index = nObjects ++;
				indicesByUUID[ uuid ] = index;
				objects.push( object );

				// accounting is done, now do the same for all bindings

				for ( var j = 0, m = nBindings; j !== m; ++ j ) {

					bindings[ j ].push(
							new THREE.PropertyBinding(
								object, paths[ j ], parsedPaths[ j ] ) );

				}

			} else if ( index < nCachedObjects ) {

				var knownObject = objects[ index ];

				// move existing object to the ACTIVE region

				var firstActiveIndex = -- nCachedObjects,
					lastCachedObject = objects[ firstActiveIndex ];

				indicesByUUID[ lastCachedObject.uuid ] = index;
				objects[ index ] = lastCachedObject;

				indicesByUUID[ uuid ] = firstActiveIndex;
				objects[ firstActiveIndex ] = object;

				// accounting is done, now do the same for all bindings

				for ( var j = 0, m = nBindings; j !== m; ++ j ) {

					var bindingsForPath = bindings[ j ],
						lastCached = bindingsForPath[ firstActiveIndex ],
						binding = bindingsForPath[ index ];

					bindingsForPath[ index ] = lastCached;

					if ( binding === undefined ) {

						// since we do not bother to create new bindings
						// for objects that are cached, the binding may
						// or may not exist

						binding = new THREE.PropertyBinding(
								object, paths[ j ], parsedPaths[ j ] );

					}

					bindingsForPath[ firstActiveIndex ] = binding;

				}

			} else if ( objects[ index ] !== knownObject) {

				console.error( "Different objects with the same UUID " +
						"detected. Clean the caches or recreate your " +
						"infrastructure when reloading scenes..." );

			} // else the object is already where we want it to be

		} // for arguments

		this.nCachedObjects_ = nCachedObjects;

	},

	remove: function( var_args ) {

		var objects = this._objects,
			nObjects = objects.length,
			nCachedObjects = this.nCachedObjects_,
			indicesByUUID = this._indicesByUUID,
			bindings = this._bindings,
			nBindings = bindings.length;

		for ( var i = 0, n = arguments.length; i !== n; ++ i ) {

			var object = arguments[ i ],
				uuid = object.uuid,
				index = indicesByUUID[ uuid ];

			if ( index !== undefined && index >= nCachedObjects ) {

				// move existing object into the CACHED region

				var lastCachedIndex = nCachedObjects ++,
					firstActiveObject = objects[ lastCachedIndex ];

				indicesByUUID[ firstActiveObject.uuid ] = index;
				objects[ index ] = firstActiveObject;

				indicesByUUID[ uuid ] = lastCachedIndex;
				objects[ lastCachedIndex ] = object;

				// accounting is done, now do the same for all bindings

				for ( var j = 0, m = nBindings; j !== m; ++ j ) {

					var bindingsForPath = bindings[ j ],
						firstActive = bindingsForPath[ lastCachedIndex ],
						binding = bindingsForPath[ index ];

					bindingsForPath[ index ] = firstActive;
					bindingsForPath[ lastCachedIndex ] = binding;

				}

			}

		} // for arguments

		this.nCachedObjects_ = nCachedObjects;

	},

	// remove & forget
	uncache: function( var_args ) {

		var objects = this._objects,
			nObjects = objects.length,
			nCachedObjects = this.nCachedObjects_,
			indicesByUUID = this._indicesByUUID,
			bindings = this._bindings,
			nBindings = bindings.length;

		for ( var i = 0, n = arguments.length; i !== n; ++ i ) {

			var object = arguments[ i ],
				uuid = object.uuid,
				index = indicesByUUID[ uuid ];

			if ( index !== undefined ) {

				delete indicesByUUID[ uuid ];

				if ( index < nCachedObjects ) {

					// object is cached, shrink the CACHED region

					var firstActiveIndex = -- nCachedObjects,
						lastCachedObject = objects[ firstActiveIndex ],
						lastIndex = -- nObjects,
						lastObject = objects[ lastIndex ];

					// last cached object takes this object's place
					indicesByUUID[ lastCachedObject.uuid ] = index;
					objects[ index ] = lastCachedObject;

					// last object goes to the activated slot and pop
					indicesByUUID[ lastObject.uuid ] = firstActiveIndex;
					objects[ firstActiveIndex ] = lastObject;
					objects.pop();

					// accounting is done, now do the same for all bindings

					for ( var j = 0, m = nBindings; j !== m; ++ j ) {

						var bindingsForPath = bindings[ j ],
							lastCached = bindingsForPath[ firstActiveIndex ],
							last = bindingsForPath[ lastIndex ];

						bindingsForPath[ index ] = lastCached;
						bindingsForPath[ firstActiveIndex ] = last;
						bindingsForPath.pop();

					}

				} else {

					// object is active, just swap with the last and pop

					var lastIndex = -- nObjects,
						lastObject = objects[ lastIndex ];

					indicesByUUID[ lastObject.uuid ] = index;
					objects[ index ] = lastObject;
					objects.pop();

					// accounting is done, now do the same for all bindings

					for ( var j = 0, m = nBindings; j !== m; ++ j ) {

						var bindingsForPath = bindings[ j ];

						bindingsForPath[ index ] = bindingsForPath[ lastIndex ];
						bindingsForPath.pop();

					}

				} // cached or active

			} // if object is known

		} // for arguments

		this.nCachedObjects_ = nCachedObjects;

	},

	// Internal interface used by befriended PropertyBinding.Composite:

	subscribe_: function( path, parsedPath ) {
		// returns an array of bindings for the given path that is changed
		// according to the contained objects in the group

		var indicesByPath = this._bindingsIndicesByPath,
			index = indicesByPath[ path ],
			bindings = this._bindings;

		if ( index !== undefined ) return bindings[ index ];

		var paths = this._paths,
			parsedPaths = this._parsedPaths,
			objects = this._objects,
			nObjects = objects.length,
			nCachedObjects = this.nCachedObjects_,
			bindingsForPath = new Array( nObjects );

		index = bindings.length;

		indicesByPath[ path ] = index;

		paths.push( path );
		parsedPaths.push( parsedPath );
		bindings.push( bindingsForPath );

		for ( var i = nCachedObjects,
				n = objects.length; i !== n; ++ i ) {

			var object = objects[ i ];

			bindingsForPath[ i ] =
					new THREE.PropertyBinding( object, path, parsedPath );

		}

		return bindingsForPath;

	},

	unsubscribe_: function( path ) {
		// tells the group to forget about a property path and no longer
		// update the array previously obtained with 'subscribe_'

		var indicesByPath = this._bindingsIndicesByPath,
			index = indicesByPath[ path ];

		if ( index !== undefined ) {

			var paths = this._paths,
				parsedPaths = this._parsedPaths,
				bindings = this._bindings,
				lastBindingsIndex = bindings.length - 1,
				lastBindings = bindings[ lastBindingsIndex ],
				lastBindingsPath = path[ lastBindingsIndex ];

			indicesByPath[ lastBindingsPath ] = index;

			bindings[ index ] = lastBindings;
			bindings.pop();

			parsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];
			parsedPaths.pop();

			paths[ index ] = paths[ lastBindingsIndex ];
			paths.pop();

		}

	}

};


// File:src/animation/AnimationUtils.js

/**
 * @author tschw
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 */

THREE.AnimationUtils = {

	// same as Array.prototype.slice, but also works on typed arrays
	arraySlice: function( array, from, to ) {

		if ( THREE.AnimationUtils.isTypedArray( array ) ) {

			return new array.constructor( array.subarray( from, to ) );

		}

		return array.slice( from, to );

	},

	// converts an array to a specific type
	convertArray: function( array, type, forceClone ) {

		if ( ! array || // let 'undefined' and 'null' pass
				! forceClone && array.constructor === type ) return array;

		if ( typeof type.BYTES_PER_ELEMENT === 'number' ) {

			return new type( array ); // create typed array

		}

		return Array.prototype.slice.call( array ); // create Array

	},

	isTypedArray: function( object ) {

		return ArrayBuffer.isView( object ) &&
				! ( object instanceof DataView );

	},

	// returns an array by which times and values can be sorted
	getKeyframeOrder: function( times ) {

		function compareTime( i, j ) {

			return times[ i ] - times[ j ];

		}

		var n = times.length;
		var result = new Array( n );
		for ( var i = 0; i !== n; ++ i ) result[ i ] = i;

		result.sort( compareTime );

		return result;

	},

	// uses the array previously returned by 'getKeyframeOrder' to sort data
	sortedArray: function( values, stride, order ) {

		var nValues = values.length;
		var result = new values.constructor( nValues );

		for ( var i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {

			var srcOffset = order[ i ] * stride;

			for ( var j = 0; j !== stride; ++ j ) {

				result[ dstOffset ++ ] = values[ srcOffset + j ];

			}

		}

		return result;

	},

	// function for parsing AOS keyframe formats
	flattenJSON: function( jsonKeys, times, values, valuePropertyName ) {

		var i = 1, key = jsonKeys[ 0 ];

		while ( key !== undefined && key[ valuePropertyName ] === undefined ) {

			key = jsonKeys[ i ++ ];

		}

		if ( key === undefined ) return; // no data

		var value = key[ valuePropertyName ];
		if ( value === undefined ) return; // no data

		if ( Array.isArray( value ) ) {

			do {

				value = key[ valuePropertyName ];

				if ( value !== undefined ) {

					times.push( key.time );
					values.push.apply( values, value ); // push all elements

				}

				key = jsonKeys[ i ++ ];

			} while ( key !== undefined );

		} else if ( value.toArray !== undefined ) {
			// ...assume THREE.Math-ish

			do {

				value = key[ valuePropertyName ];

				if ( value !== undefined ) {

					times.push( key.time );
					value.toArray( values, values.length );

				}

				key = jsonKeys[ i ++ ];

			} while ( key !== undefined );

		} else {
			// otherwise push as-is

			do {

				value = key[ valuePropertyName ];

				if ( value !== undefined ) {

					times.push( key.time );
					values.push( value );

				}

				key = jsonKeys[ i ++ ];

			} while ( key !== undefined );

		}

	}

};

// File:src/animation/KeyframeTrack.js

/**
 *
 * A timed sequence of keyframes for a specific property.
 *
 *
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 * @author tschw
 */

THREE.KeyframeTrack = function ( name, times, values, interpolation ) {

	if( name === undefined ) throw new Error( "track name is undefined" );

	if( times === undefined || times.length === 0 ) {

		throw new Error( "no keyframes in track named " + name );

	}

	this.name = name;

	this.times = THREE.AnimationUtils.convertArray( times, this.TimeBufferType );
	this.values = THREE.AnimationUtils.convertArray( values, this.ValueBufferType );

	this.setInterpolation( interpolation || this.DefaultInterpolation );

	this.validate();
	this.optimize();

};

THREE.KeyframeTrack.prototype = {

	constructor: THREE.KeyframeTrack,

	TimeBufferType: Float32Array,
	ValueBufferType: Float32Array,

	DefaultInterpolation: THREE.InterpolateLinear,

	InterpolantFactoryMethodDiscrete: function( result ) {

		return new THREE.DiscreteInterpolant(
				this.times, this.values, this.getValueSize(), result );

	},

	InterpolantFactoryMethodLinear: function( result ) {

		return new THREE.LinearInterpolant(
				this.times, this.values, this.getValueSize(), result );

	},

	InterpolantFactoryMethodSmooth: function( result ) {

		return new THREE.CubicInterpolant(
				this.times, this.values, this.getValueSize(), result );

	},

	setInterpolation: function( interpolation ) {

		var factoryMethod = undefined;

		switch ( interpolation ) {

			case THREE.InterpolateDiscrete:

				factoryMethod = this.InterpolantFactoryMethodDiscrete;

				break;

			case THREE.InterpolateLinear:

				factoryMethod = this.InterpolantFactoryMethodLinear;

				break;

			case THREE.InterpolateSmooth:

				factoryMethod = this.InterpolantFactoryMethodSmooth;

				break;

		}

		if ( factoryMethod === undefined ) {

			var message = "unsupported interpolation for " +
					this.ValueTypeName + " keyframe track named " + this.name;

			if ( this.createInterpolant === undefined ) {

				// fall back to default, unless the default itself is messed up
				if ( interpolation !== this.DefaultInterpolation ) {

					this.setInterpolation( this.DefaultInterpolation );

				} else {

					throw new Error( message ); // fatal, in this case

				}

			}

			console.warn( message );
			return;

		}

		this.createInterpolant = factoryMethod;

	},

	getInterpolation: function() {

		switch ( this.createInterpolant ) {

			case this.InterpolantFactoryMethodDiscrete:

				return THREE.InterpolateDiscrete;

			case this.InterpolantFactoryMethodLinear:

				return THREE.InterpolateLinear;

			case this.InterpolantFactoryMethodSmooth:

				return THREE.InterpolateSmooth;

		}

	},

	getValueSize: function() {

		return this.values.length / this.times.length;

	},

	// move all keyframes either forwards or backwards in time
	shift: function( timeOffset ) {

		if( timeOffset !== 0.0 ) {

			var times = this.times;

			for( var i = 0, n = times.length; i !== n; ++ i ) {

				times[ i ] += timeOffset;

			}

		}

		return this;

	},

	// scale all keyframe times by a factor (useful for frame <-> seconds conversions)
	scale: function( timeScale ) {

		if( timeScale !== 1.0 ) {

			var times = this.times;

			for( var i = 0, n = times.length; i !== n; ++ i ) {

				times[ i ] *= timeScale;

			}

		}

		return this;

	},

	// removes keyframes before and after animation without changing any values within the range [startTime, endTime].
	// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values
	trim: function( startTime, endTime ) {

		var times = this.times,
			nKeys = times.length,
			from = 0,
			to = nKeys - 1;

		while ( from !== nKeys && times[ from ] < startTime ) ++ from;
		while ( to !== -1 && times[ to ] > endTime ) -- to;

		++ to; // inclusive -> exclusive bound

		if( from !== 0 || to !== nKeys ) {

			// empty tracks are forbidden, so keep at least one keyframe
			if ( from >= to ) to = Math.max( to , 1 ), from = to - 1;

			var stride = this.getValueSize();
			this.times = THREE.AnimationUtils.arraySlice( times, from, to );
			this.values = THREE.AnimationUtils.
					arraySlice( this.values, from * stride, to * stride );

		}

		return this;

	},

	// ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable
	validate: function() {

		var valid = true;

		var valueSize = this.getValueSize();
		if ( valueSize - Math.floor( valueSize ) !== 0 ) {

			console.error( "invalid value size in track", this );
			valid = false;

		}

		var times = this.times,
			values = this.values,

			nKeys = times.length;

		if( nKeys === 0 ) {

			console.error( "track is empty", this );
			valid = false;

		}

		var prevTime = null;

		for( var i = 0; i !== nKeys; i ++ ) {

			var currTime = times[ i ];

			if ( typeof currTime === 'number' && isNaN( currTime ) ) {

				console.error( "time is not a valid number", this, i, currTime );
				valid = false;
				break;

			}

			if( prevTime !== null && prevTime > currTime ) {

				console.error( "out of order keys", this, i, currTime, prevTime );
				valid = false;
				break;

			}

			prevTime = currTime;

		}

		if ( values !== undefined ) {

			if ( THREE.AnimationUtils.isTypedArray( values ) ) {

				for ( var i = 0, n = values.length; i !== n; ++ i ) {

					var value = values[ i ];

					if ( isNaN( value ) ) {

						console.error( "value is not a valid number", this, i, value );
						valid = false;
						break;

					}

				}

			}

		}

		return valid;

	},

	// removes equivalent sequential keys as common in morph target sequences
	// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)
	optimize: function() {

		var times = this.times,
			values = this.values,
			stride = this.getValueSize(),

			writeIndex = 1;

		for( var i = 1, n = times.length - 1; i <= n; ++ i ) {

			var keep = false;

			var time = times[ i ];
			var timeNext = times[ i + 1 ];

			// remove adjacent keyframes scheduled at the same time

			if ( time !== timeNext && ( i !== 1 || time !== time[ 0 ] ) ) {

				// remove unnecessary keyframes same as their neighbors
				var offset = i * stride,
					offsetP = offset - stride,
					offsetN = offset + stride;

				for ( var j = 0; j !== stride; ++ j ) {

					var value = values[ offset + j ];

					if ( value !== values[ offsetP + j ] ||
							value !== values[ offsetN + j ] ) {

						keep = true;
						break;

					}

				}

			}

			// in-place compaction

			if ( keep ) {

				if ( i !== writeIndex ) {

					times[ writeIndex ] = times[ i ];

					var readOffset = i * stride,
						writeOffset = writeIndex * stride;

					for ( var j = 0; j !== stride; ++ j ) {

						values[ writeOffset + j ] = values[ readOffset + j ];

					}


				}

				++ writeIndex;

			}

		}

		if ( writeIndex !== times.length ) {

			this.times = THREE.AnimationUtils.arraySlice( times, 0, writeIndex );
			this.values = THREE.AnimationUtils.arraySlice( values, 0, writeIndex * stride );

		}

		return this;

	}

};

// Static methods:

Object.assign( THREE.KeyframeTrack, {

	// Serialization (in static context, because of constructor invocation
	// and automatic invocation of .toJSON):

	parse: function( json ) {

		if( json.type === undefined ) {

			throw new Error( "track type undefined, can not parse" );

		}

		var trackType = THREE.KeyframeTrack._getTrackTypeForValueTypeName( json.type );

		if ( json.times === undefined ) {

			console.warn( "legacy JSON format detected, converting" );

			var times = [], values = [];

			THREE.AnimationUtils.flattenJSON( json.keys, times, values, 'value' );

			json.times = times;
			json.values = values;

		}

		// derived classes can define a static parse method
		if ( trackType.parse !== undefined ) {

			return trackType.parse( json );

		} else {

			// by default, we asssume a constructor compatible with the base
			return new trackType(
					json.name, json.times, json.values, json.interpolation );

		}

	},

	toJSON: function( track ) {

		var trackType = track.constructor;

		var json;

		// derived classes can define a static toJSON method
		if ( trackType.toJSON !== undefined ) {

			json = trackType.toJSON( track );

		} else {

			// by default, we assume the data can be serialized as-is
			json = {

				'name': track.name,
				'times': THREE.AnimationUtils.convertArray( track.times, Array ),
				'values': THREE.AnimationUtils.convertArray( track.values, Array )

			};

			var interpolation = track.getInterpolation();

			if ( interpolation !== track.DefaultInterpolation ) {

				json.interpolation = interpolation;

			}

		}

		json.type = track.ValueTypeName; // mandatory

		return json;

	},

	_getTrackTypeForValueTypeName: function( typeName ) {

		switch( typeName.toLowerCase() ) {

			case "scalar":
			case "double":
			case "float":
			case "number":
			case "integer":

				return THREE.NumberKeyframeTrack;

			case "vector":
			case "vector2":
			case "vector3":
			case "vector4":

				return THREE.VectorKeyframeTrack;

			case "color":

				return THREE.ColorKeyframeTrack;

			case "quaternion":

				return THREE.QuaternionKeyframeTrack;

			case "bool":
			case "boolean":

				return THREE.BooleanKeyframeTrack;

			case "string":

				return THREE.StringKeyframeTrack;

		};

		throw new Error( "Unsupported typeName: " + typeName );

	}

} );

// File:src/animation/PropertyBinding.js

/**
 *
 * A reference to a real property in the scene graph.
 *
 *
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 * @author tschw
 */

THREE.PropertyBinding = function ( rootNode, path, parsedPath ) {

	this.path = path;
	this.parsedPath = parsedPath ||
			THREE.PropertyBinding.parseTrackName( path );

	this.node = THREE.PropertyBinding.findNode(
			rootNode, this.parsedPath.nodeName ) || rootNode;

	this.rootNode = rootNode;

};

THREE.PropertyBinding.prototype = {

	constructor: THREE.PropertyBinding,

	getValue: function getValue_unbound( targetArray, offset ) {

		this.bind();
		this.getValue( targetArray, offset );

		// Note: This class uses a State pattern on a per-method basis:
		// 'bind' sets 'this.getValue' / 'setValue' and shadows the
		// prototype version of these methods with one that represents
		// the bound state. When the property is not found, the methods
		// become no-ops.

	},

	setValue: function getValue_unbound( sourceArray, offset ) {

		this.bind();
		this.setValue( sourceArray, offset );

	},

	// create getter / setter pair for a property in the scene graph
	bind: function() {

		var targetObject = this.node,
			parsedPath = this.parsedPath,

			objectName = parsedPath.objectName,
			propertyName = parsedPath.propertyName,
			propertyIndex = parsedPath.propertyIndex;

		if ( ! targetObject ) {

			targetObject = THREE.PropertyBinding.findNode(
					this.rootNode, parsedPath.nodeName ) || this.rootNode;

			this.node = targetObject;

		}

		// set fail state so we can just 'return' on error
		this.getValue = this._getValue_unavailable;
		this.setValue = this._setValue_unavailable;

 		// ensure there is a value node
		if ( ! targetObject ) {

			console.error( "  trying to update node for track: " + this.path + " but it wasn't found." );
			return;

		}

		if( objectName ) {

			var objectIndex = parsedPath.objectIndex;

			// special cases were we need to reach deeper into the hierarchy to get the face materials....
			switch ( objectName ) {

				case 'materials':

					if( ! targetObject.material ) {

						console.error( '  can not bind to material as node does not have a material', this );
						return;

					}

					if( ! targetObject.material.materials ) {

						console.error( '  can not bind to material.materials as node.material does not have a materials array', this );
						return;

					}

					targetObject = targetObject.material.materials;

					break;

				case 'bones':

					if( ! targetObject.skeleton ) {

						console.error( '  can not bind to bones as node does not have a skeleton', this );
						return;

					}

					// potential future optimization: skip this if propertyIndex is already an integer
					// and convert the integer string to a true integer.

					targetObject = targetObject.skeleton.bones;

					// support resolving morphTarget names into indices.
					for ( var i = 0; i < targetObject.length; i ++ ) {

						if ( targetObject[i].name === objectIndex ) {

							objectIndex = i;
							break;

						}

					}

					break;

				default:

					if ( targetObject[ objectName ] === undefined ) {

						console.error( '  can not bind to objectName of node, undefined', this );
						return;

					}

					targetObject = targetObject[ objectName ];

			}


			if ( objectIndex !== undefined ) {

				if( targetObject[ objectIndex ] === undefined ) {

					console.error( "  trying to bind to objectIndex of objectName, but is undefined:", this, targetObject );
					return;

				}

				targetObject = targetObject[ objectIndex ];

			}

		}

		// resolve property
		var nodeProperty = targetObject[ propertyName ];

		if ( ! nodeProperty ) {

			var nodeName = parsedPath.nodeName;

			console.error( "  trying to update property for track: " + nodeName +
					'.' + propertyName + " but it wasn't found.", targetObject );
			return;

		}

		// determine versioning scheme
		var versioning = this.Versioning.None;

		if ( targetObject.needsUpdate !== undefined ) { // material

			versioning = this.Versioning.NeedsUpdate;
			this.targetObject = targetObject;

		} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) { // node transform

			versioning = this.Versioning.MatrixWorldNeedsUpdate;
			this.targetObject = targetObject;

		}

		// determine how the property gets bound
		var bindingType = this.BindingType.Direct;

		if ( propertyIndex !== undefined ) {
			// access a sub element of the property array (only primitives are supported right now)

			if ( propertyName === "morphTargetInfluences" ) {
				// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.

				// support resolving morphTarget names into indices.
				if ( ! targetObject.geometry ) {

					console.error( '  can not bind to morphTargetInfluences becasuse node does not have a geometry', this );
					return;

				}

				if ( ! targetObject.geometry.morphTargets ) {

					console.error( '  can not bind to morphTargetInfluences becasuse node does not have a geometry.morphTargets', this );
					return;

				}

				for ( var i = 0; i < this.node.geometry.morphTargets.length; i ++ ) {

					if ( targetObject.geometry.morphTargets[i].name === propertyIndex ) {

						propertyIndex = i;
						break;

					}

				}

			}

			bindingType = this.BindingType.ArrayElement;

			this.resolvedProperty = nodeProperty;
			this.propertyIndex = propertyIndex;

		} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {
			// must use copy for Object3D.Euler/Quaternion

			bindingType = this.BindingType.HasFromToArray;

			this.resolvedProperty = nodeProperty;

		} else if ( nodeProperty.length !== undefined ) {

			bindingType = this.BindingType.EntireArray;

			this.resolvedProperty = nodeProperty;

		} else {

			this.propertyName = propertyName;

		}

		// select getter / setter
		this.getValue = this.GetterByBindingType[ bindingType ];
		this.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];

	},

	unbind: function() {

		this.node = null;

		// back to the prototype version of getValue / setValue
		// note: avoiding to mutate the shape of 'this' via 'delete'
		this.getValue = this._getValue_unbound;
		this.setValue = this._setValue_unbound;

	}

};

Object.assign( THREE.PropertyBinding.prototype, { // prototype, continued

	// these are used to "bind" a nonexistent property
	_getValue_unavailable: function() {},
	_setValue_unavailable: function() {},

	// initial state of these methods that calls 'bind'
	_getValue_unbound: THREE.PropertyBinding.prototype.getValue,
	_setValue_unbound: THREE.PropertyBinding.prototype.setValue,

	BindingType: {
		Direct: 0,
		EntireArray: 1,
		ArrayElement: 2,
		HasFromToArray: 3
	},

	Versioning: {
		None: 0,
		NeedsUpdate: 1,
		MatrixWorldNeedsUpdate: 2
	},

	GetterByBindingType: [

		function getValue_direct( buffer, offset ) {

			buffer[ offset ] = this.node[ this.propertyName ];

		},

		function getValue_array( buffer, offset ) {

			var source = this.resolvedProperty;

			for ( var i = 0, n = source.length; i !== n; ++ i ) {

				buffer[ offset ++ ] = source[ i ];

			}

		},

		function getValue_arrayElement( buffer, offset ) {

			buffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];

		},

		function getValue_toArray( buffer, offset ) {

			this.resolvedProperty.toArray( buffer, offset );

		}

	],

	SetterByBindingTypeAndVersioning: [

		[
			// Direct

			function setValue_direct( buffer, offset ) {

				this.node[ this.propertyName ] = buffer[ offset ];

			},

			function setValue_direct_setNeedsUpdate( buffer, offset ) {

				this.node[ this.propertyName ] = buffer[ offset ];
				this.targetObject.needsUpdate = true;

			},

			function setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {

				this.node[ this.propertyName ] = buffer[ offset ];
				this.targetObject.matrixWorldNeedsUpdate = true;

			}

		], [

			// EntireArray

			function setValue_array( buffer, offset ) {

				var dest = this.resolvedProperty;

				for ( var i = 0, n = dest.length; i !== n; ++ i ) {

					dest[ i ] = buffer[ offset ++ ];

				}

			},

			function setValue_array_setNeedsUpdate( buffer, offset ) {

				var dest = this.resolvedProperty;

				for ( var i = 0, n = dest.length; i !== n; ++ i ) {

					dest[ i ] = buffer[ offset ++ ];

				}

				this.targetObject.needsUpdate = true;

			},

			function setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {

				var dest = this.resolvedProperty;

				for ( var i = 0, n = dest.length; i !== n; ++ i ) {

					dest[ i ] = buffer[ offset ++ ];

				}

				this.targetObject.matrixWorldNeedsUpdate = true;

			}

		], [

			// ArrayElement

			function setValue_arrayElement( buffer, offset ) {

				this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];

			},

			function setValue_arrayElement_setNeedsUpdate( buffer, offset ) {

				this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
				this.targetObject.needsUpdate = true;

			},

			function setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {

				this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
				this.targetObject.matrixWorldNeedsUpdate = true;

			}

		], [

			// HasToFromArray

			function setValue_fromArray( buffer, offset ) {

				this.resolvedProperty.fromArray( buffer, offset );

			},

			function setValue_fromArray_setNeedsUpdate( buffer, offset ) {

				this.resolvedProperty.fromArray( buffer, offset );
				this.targetObject.needsUpdate = true;

			},

			function setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {

				this.resolvedProperty.fromArray( buffer, offset );
				this.targetObject.matrixWorldNeedsUpdate = true;

			}

		]

	]

} );

THREE.PropertyBinding.Composite =
		function( targetGroup, path, optionalParsedPath ) {

	var parsedPath = optionalParsedPath ||
			THREE.PropertyBinding.parseTrackName( path );

	this._targetGroup = targetGroup;
	this._bindings = targetGroup.subscribe_( path, parsedPath );

};

THREE.PropertyBinding.Composite.prototype = {

	constructor: THREE.PropertyBinding.Composite,

	getValue: function( array, offset ) {

		this.bind(); // bind all binding

		var firstValidIndex = this._targetGroup.nCachedObjects_,
			binding = this._bindings[ firstValidIndex ];

		// and only call .getValue on the first
		if ( binding !== undefined ) binding.getValue( array, offset );

	},

	setValue: function( array, offset ) {

		var bindings = this._bindings;

		for ( var i = this._targetGroup.nCachedObjects_,
				n = bindings.length; i !== n; ++ i ) {

			bindings[ i ].setValue( array, offset );

		}

	},

	bind: function() {

		var bindings = this._bindings;

		for ( var i = this._targetGroup.nCachedObjects_,
				n = bindings.length; i !== n; ++ i ) {

			bindings[ i ].bind();

		}

	},

	unbind: function() {

		var bindings = this._bindings;

		for ( var i = this._targetGroup.nCachedObjects_,
				n = bindings.length; i !== n; ++ i ) {

			bindings[ i ].unbind();

		}

	}

};

THREE.PropertyBinding.create = function( root, path, parsedPath ) {

	if ( ! ( root instanceof THREE.AnimationObjectGroup ) ) {

		return new THREE.PropertyBinding( root, path, parsedPath );

	} else {

		return new THREE.PropertyBinding.Composite( root, path, parsedPath );

	}

};

THREE.PropertyBinding.parseTrackName = function( trackName ) {

	// matches strings in the form of:
	//    nodeName.property
	//    nodeName.property[accessor]
	//    nodeName.material.property[accessor]
	//    uuid.property[accessor]
	//    uuid.objectName[objectIndex].propertyName[propertyIndex]
	//    parentName/nodeName.property
	//    parentName/parentName/nodeName.property[index]
	//	  .bone[Armature.DEF_cog].position
	// created and tested via https://regex101.com/#javascript

	var re = /^(([\w]+\/)*)([\w-\d]+)?(\.([\w]+)(\[([\w\d\[\]\_. ]+)\])?)?(\.([\w.]+)(\[([\w\d\[\]\_. ]+)\])?)$/;
	var matches = re.exec(trackName);

	if( ! matches ) {
		throw new Error( "cannot parse trackName at all: " + trackName );
	}

    if (matches.index === re.lastIndex) {
        re.lastIndex++;
    }

	var results = {
		// directoryName: matches[1], // (tschw) currently unused
		nodeName: matches[3], 	// allowed to be null, specified root node.
		objectName: matches[5],
		objectIndex: matches[7],
		propertyName: matches[9],
		propertyIndex: matches[11]	// allowed to be null, specifies that the whole property is set.
	};

	if( results.propertyName === null || results.propertyName.length === 0 ) {
		throw new Error( "can not parse propertyName from trackName: " + trackName );
	}

	return results;

};

THREE.PropertyBinding.findNode = function( root, nodeName ) {

	if( ! nodeName || nodeName === "" || nodeName === "root" || nodeName === "." || nodeName === -1 || nodeName === root.name || nodeName === root.uuid ) {

		return root;

	}

	// search into skeleton bones.
	if( root.skeleton ) {

		var searchSkeleton = function( skeleton ) {

			for( var i = 0; i < skeleton.bones.length; i ++ ) {

				var bone = skeleton.bones[i];

				if( bone.name === nodeName ) {

					return bone;

				}
			}

			return null;

		};

		var bone = searchSkeleton( root.skeleton );

		if( bone ) {

			return bone;

		}
	}

	// search into node subtree.
	if( root.children ) {

		var searchNodeSubtree = function( children ) {

			for( var i = 0; i < children.length; i ++ ) {

				var childNode = children[i];

				if( childNode.name === nodeName || childNode.uuid === nodeName ) {

					return childNode;

				}

				var result = searchNodeSubtree( childNode.children );

				if( result ) return result;

			}

			return null;

		};

		var subTreeNode = searchNodeSubtree( root.children );

		if( subTreeNode ) {

			return subTreeNode;

		}

	}

	return null;

}

// File:src/animation/PropertyMixer.js

/**
 *
 * Buffered scene graph property that allows weighted accumulation.
 *
 *
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 * @author tschw
 */

THREE.PropertyMixer = function ( binding, typeName, valueSize ) {

	this.binding = binding;
	this.valueSize = valueSize;

	var bufferType = Float64Array,
		mixFunction;

	switch ( typeName ) {

		case 'quaternion':			mixFunction = this._slerp;		break;

		case 'string':
		case 'bool':

			bufferType = Array,		mixFunction = this._select;		break;

		default:					mixFunction = this._lerp;

	}

	this.buffer = new bufferType( valueSize * 4 );
	// layout: [ incoming | accu0 | accu1 | orig ]
	//
	// interpolators can use .buffer as their .result
	// the data then goes to 'incoming'
	//
	// 'accu0' and 'accu1' are used frame-interleaved for
	// the cumulative result and are compared to detect
	// changes
	//
	// 'orig' stores the original state of the property

	this._mixBufferRegion = mixFunction;

	this.cumulativeWeight = 0;

	this.useCount = 0;
	this.referenceCount = 0;

};

THREE.PropertyMixer.prototype = {

	constructor: THREE.PropertyMixer,

	// accumulate data in the 'incoming' region into 'accu<i>'
	accumulate: function( accuIndex, weight ) {

		// note: happily accumulating nothing when weight = 0, the caller knows
		// the weight and shouldn't have made the call in the first place

		var buffer = this.buffer,
			stride = this.valueSize,
			offset = accuIndex * stride + stride,

			currentWeight = this.cumulativeWeight;

		if ( currentWeight === 0 ) {

			// accuN := incoming * weight

			for ( var i = 0; i !== stride; ++ i ) {

				buffer[ offset + i ] = buffer[ i ];

			}

			currentWeight = weight;

		} else {

			// accuN := accuN + incoming * weight

			currentWeight += weight;
			var mix = weight / currentWeight;
			this._mixBufferRegion( buffer, offset, 0, mix, stride );

		}

		this.cumulativeWeight = currentWeight;

	},

	// apply the state of 'accu<i>' to the binding when accus differ
	apply: function( accuIndex ) {

		var stride = this.valueSize,
			buffer = this.buffer,
			offset = accuIndex * stride + stride,

			weight = this.cumulativeWeight,

			binding = this.binding;

		this.cumulativeWeight = 0;

		if ( weight < 1 ) {

			// accuN := accuN + original * ( 1 - cumulativeWeight )

			var originalValueOffset = stride * 3;

			this._mixBufferRegion(
					buffer, offset, originalValueOffset, 1 - weight, stride );

		}

		for ( var i = stride, e = stride + stride; i !== e; ++ i ) {

			if ( buffer[ i ] !== buffer[ i + stride ] ) {

				// value has changed -> update scene graph

				binding.setValue( buffer, offset );
				break;

			}

		}

	},

	// remember the state of the bound property and copy it to both accus
	saveOriginalState: function() {

		var binding = this.binding;

		var buffer = this.buffer,
			stride = this.valueSize,

			originalValueOffset = stride * 3;

		binding.getValue( buffer, originalValueOffset );

		// accu[0..1] := orig -- initially detect changes against the original
		for ( var i = stride, e = originalValueOffset; i !== e; ++ i ) {

			buffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];

		}

		this.cumulativeWeight = 0;

	},

	// apply the state previously taken via 'saveOriginalState' to the binding
	restoreOriginalState: function() {

		var originalValueOffset = this.valueSize * 3;
		this.binding.setValue( this.buffer, originalValueOffset );

	},


	// mix functions

	_select: function( buffer, dstOffset, srcOffset, t, stride ) {

		if ( t >= 0.5 ) {

			for ( var i = 0; i !== stride; ++ i ) {

				buffer[ dstOffset + i ] = buffer[ srcOffset + i ];

			}

		}

	},

	_slerp: function( buffer, dstOffset, srcOffset, t, stride ) {

		THREE.Quaternion.slerpFlat( buffer, dstOffset,
				buffer, dstOffset, buffer, srcOffset, t );

	},

	_lerp: function( buffer, dstOffset, srcOffset, t, stride ) {

		var s = 1 - t;

		for ( var i = 0; i !== stride; ++ i ) {

			var j = dstOffset + i;

			buffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;

		}

	}

};

// File:src/animation/tracks/BooleanKeyframeTrack.js

/**
 *
 * A Track of Boolean keyframe values.
 *
 *
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 * @author tschw
 */

THREE.BooleanKeyframeTrack = function ( name, times, values ) {

	THREE.KeyframeTrack.call( this, name, times, values );

};

THREE.BooleanKeyframeTrack.prototype =
		Object.assign( Object.create( THREE.KeyframeTrack.prototype ), {

	constructor: THREE.BooleanKeyframeTrack,

	ValueTypeName: 'bool',
	ValueBufferType: Array,

	DefaultInterpolation: THREE.IntepolateDiscrete,

	InterpolantFactoryMethodLinear: undefined,
	InterpolantFactoryMethodSmooth: undefined

	// Note: Actually this track could have a optimized / compressed
	// representation of a single value and a custom interpolant that
	// computes "firstValue ^ isOdd( index )".

} );

// File:src/animation/tracks/NumberKeyframeTrack.js

/**
 *
 * A Track of numeric keyframe values.
 *
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 * @author tschw
 */

THREE.NumberKeyframeTrack = function ( name, times, values, interpolation ) {

	THREE.KeyframeTrack.call( this, name, times, values, interpolation );

};

THREE.NumberKeyframeTrack.prototype =
		Object.assign( Object.create( THREE.KeyframeTrack.prototype ), {

	constructor: THREE.NumberKeyframeTrack,

	ValueTypeName: 'number',

	// ValueBufferType is inherited

	// DefaultInterpolation is inherited

} );

// File:src/animation/tracks/QuaternionKeyframeTrack.js

/**
 *
 * A Track of quaternion keyframe values.
 *
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 * @author tschw
 */

THREE.QuaternionKeyframeTrack = function ( name, times, values, interpolation ) {

	THREE.KeyframeTrack.call( this, name, times, values, interpolation );

};

THREE.QuaternionKeyframeTrack.prototype =
		Object.assign( Object.create( THREE.KeyframeTrack.prototype ), {

	constructor: THREE.QuaternionKeyframeTrack,

	ValueTypeName: 'quaternion',

	// ValueBufferType is inherited

	DefaultInterpolation: THREE.InterpolateLinear,

	InterpolantFactoryMethodLinear: function( result ) {

		return new THREE.QuaternionLinearInterpolant(
				this.times, this.values, this.getValueSize(), result );

	},

	InterpolantFactoryMethodSmooth: undefined // not yet implemented

} );

// File:src/animation/tracks/StringKeyframeTrack.js

/**
 *
 * A Track that interpolates Strings
 *
 *
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 * @author tschw
 */

THREE.StringKeyframeTrack = function ( name, times, values, interpolation ) {

	THREE.KeyframeTrack.call( this, name, times, values, interpolation );

};

THREE.StringKeyframeTrack.prototype =
		Object.assign( Object.create( THREE.KeyframeTrack.prototype ), {

	constructor: THREE.StringKeyframeTrack,

	ValueTypeName: 'string',
	ValueBufferType: Array,

	DefaultInterpolation: THREE.IntepolateDiscrete,

	InterpolantFactoryMethodLinear: undefined,

	InterpolantFactoryMethodSmooth: undefined

} );

// File:src/animation/tracks/VectorKeyframeTrack.js

/**
 *
 * A Track of vectored keyframe values.
 *
 *
 * @author Ben Houston / http://clara.io/
 * @author David Sarno / http://lighthaus.us/
 * @author tschw
 */

THREE.VectorKeyframeTrack = function ( name, times, values, interpolation ) {

	THREE.KeyframeTrack.call( this, name, times, values, interpolation );

};

THREE.VectorKeyframeTrack.prototype =
		Object.assign( Object.create( THREE.KeyframeTrack.prototype ), {

	constructor: THREE.VectorKeyframeTrack,

	ValueTypeName: 'vector'

	// ValueBufferType is inherited

	// DefaultInterpolation is inherited

} );

// File:src/audio/Audio.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Audio = function ( listener ) {

	THREE.Object3D.call( this );

	this.type = 'Audio';

	this.context = listener.context;
	this.source = this.context.createBufferSource();
	this.source.onended = this.onEnded.bind( this );

	this.gain = this.context.createGain();
	this.gain.connect( listener.getInput() );

	this.autoplay = false;

	this.startTime = 0;
	this.playbackRate = 1;
	this.isPlaying = false;
	this.hasPlaybackControl = true;
	this.sourceType = 'empty';

	this.filter = null;

};

THREE.Audio.prototype = Object.create( THREE.Object3D.prototype );
THREE.Audio.prototype.constructor = THREE.Audio;

THREE.Audio.prototype.getOutput = function () {

	return this.gain;

};

THREE.Audio.prototype.load = function ( file ) {

	var buffer = new THREE.AudioBuffer( this.context );
	buffer.load( file );

	this.setBuffer( buffer );

	return this;

};

THREE.Audio.prototype.setNodeSource = function ( audioNode ) {

	this.hasPlaybackControl = false;
	this.sourceType = 'audioNode';
	this.source = audioNode;
	this.connect();

	return this;

};

THREE.Audio.prototype.setBuffer = function ( audioBuffer ) {

	var scope = this;

	audioBuffer.onReady( function( buffer ) {

		scope.source.buffer = buffer;
		scope.sourceType = 'buffer';
		if ( scope.autoplay ) scope.play();

	} );

	return this;

};

THREE.Audio.prototype.play = function () {

	if ( this.isPlaying === true ) {

		console.warn( 'THREE.Audio: Audio is already playing.' );
		return;

	}

	if ( this.hasPlaybackControl === false ) {

		console.warn( 'THREE.Audio: this Audio has no playback control.' );
		return;

	}

	var source = this.context.createBufferSource();

	source.buffer = this.source.buffer;
	source.loop = this.source.loop;
	source.onended = this.source.onended;
	source.start( 0, this.startTime );
	source.playbackRate.value = this.playbackRate;

	this.isPlaying = true;

	this.source = source;

	this.connect();

};

THREE.Audio.prototype.pause = function () {

	if ( this.hasPlaybackControl === false ) {

		console.warn( 'THREE.Audio: this Audio has no playback control.' );
		return;

	}

	this.source.stop();
	this.startTime = this.context.currentTime;

};

THREE.Audio.prototype.stop = function () {

	if ( this.hasPlaybackControl === false ) {

		console.warn( 'THREE.Audio: this Audio has no playback control.' );
		return;

	}

	this.source.stop();
	this.startTime = 0;

};

THREE.Audio.prototype.connect = function () {

	if ( this.filter !== null ) {

		this.source.connect( this.filter );
		this.filter.connect( this.getOutput() );

	} else {

		this.source.connect( this.getOutput() );

	}

};

THREE.Audio.prototype.disconnect = function () {

	if ( this.filter !== null ) {

		this.source.disconnect( this.filter );
		this.filter.disconnect( this.getOutput() );

	} else {

		this.source.disconnect( this.getOutput() );

	}

};

THREE.Audio.prototype.getFilter = function () {

	return this.filter;

};

THREE.Audio.prototype.setFilter = function ( value ) {

	if ( value === undefined ) value = null;

	if ( this.isPlaying === true ) {

		this.disconnect();
		this.filter = value;
		this.connect();

	} else {

		this.filter = value;

	}

};

THREE.Audio.prototype.setPlaybackRate = function ( value ) {

	if ( this.hasPlaybackControl === false ) {

		console.warn( 'THREE.Audio: this Audio has no playback control.' );
		return;

	}

	this.playbackRate = value;

	if ( this.isPlaying === true ) {

		this.source.playbackRate.value = this.playbackRate;

	}

};

THREE.Audio.prototype.getPlaybackRate = function () {

	return this.playbackRate;

};

THREE.Audio.prototype.onEnded = function() {

	this.isPlaying = false;

};

THREE.Audio.prototype.setLoop = function ( value ) {

	if ( this.hasPlaybackControl === false ) {

		console.warn( 'THREE.Audio: this Audio has no playback control.' );
		return;

	}

	this.source.loop = value;

};

THREE.Audio.prototype.getLoop = function () {

	if ( this.hasPlaybackControl === false ) {

		console.warn( 'THREE.Audio: this Audio has no playback control.' );
		return false;

	}

	return this.source.loop;

};


THREE.Audio.prototype.setVolume = function ( value ) {

	this.gain.gain.value = value;

};

THREE.Audio.prototype.getVolume = function () {

	return this.gain.gain.value;

};

// File:src/audio/AudioAnalyser.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.AudioAnalyser = function ( audio, fftSize ) {

	this.analyser = audio.context.createAnalyser();
	this.analyser.fftSize = fftSize !== undefined ? fftSize : 2048;

	this.data = new Uint8Array( this.analyser.frequencyBinCount );

	audio.getOutput().connect( this.analyser );

};

THREE.AudioAnalyser.prototype = {

	constructor: THREE.AudioAnalyser,

	getData: function () {

		this.analyser.getByteFrequencyData( this.data );
		return this.data;

	}

};

// File:src/audio/AudioBuffer.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.AudioBuffer = function ( context ) {

	this.context = context;
	this.ready = false;
	this.readyCallbacks = [];

};

THREE.AudioBuffer.prototype.load = function ( file ) {

	var scope = this;

	var request = new XMLHttpRequest();
	request.open( 'GET', file, true );
	request.responseType = 'arraybuffer';
	request.onload = function ( e ) {

		scope.context.decodeAudioData( this.response, function ( buffer ) {

			scope.buffer = buffer;
			scope.ready = true;

			for ( var i = 0; i < scope.readyCallbacks.length; i ++ ) {

				scope.readyCallbacks[ i ]( scope.buffer );

			}

			scope.readyCallbacks = [];

		} );

	};
	request.send();

	return this;

};

THREE.AudioBuffer.prototype.onReady = function ( callback ) {

	if ( this.ready ) {

		callback( this.buffer );

	} else {

		this.readyCallbacks.push( callback );

	}

};

// File:src/audio/PositionalAudio.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.PositionalAudio = function ( listener ) {

	THREE.Audio.call( this, listener );

	this.panner = this.context.createPanner();
	this.panner.connect( this.gain );

};

THREE.PositionalAudio.prototype = Object.create( THREE.Audio.prototype );
THREE.PositionalAudio.prototype.constructor = THREE.PositionalAudio;

THREE.PositionalAudio.prototype.getOutput = function () {

	return this.panner;

};

THREE.PositionalAudio.prototype.setRefDistance = function ( value ) {

	this.panner.refDistance = value;

};

THREE.PositionalAudio.prototype.getRefDistance = function () {

	return this.panner.refDistance;

};

THREE.PositionalAudio.prototype.setRolloffFactor = function ( value ) {

	this.panner.rolloffFactor = value;

};

THREE.PositionalAudio.prototype.getRolloffFactor = function () {

	return this.panner.rolloffFactor;

};

THREE.PositionalAudio.prototype.setDistanceModel = function ( value ) {

	this.panner.distanceModel = value;

};

THREE.PositionalAudio.prototype.getDistanceModel = function () {

	return this.panner.distanceModel;

};

THREE.PositionalAudio.prototype.setMaxDistance = function ( value ) {

	this.panner.maxDistance = value;

};

THREE.PositionalAudio.prototype.getMaxDistance = function () {

	return this.panner.maxDistance;

};

THREE.PositionalAudio.prototype.updateMatrixWorld = ( function () {

	var position = new THREE.Vector3();

	return function updateMatrixWorld( force ) {

		THREE.Object3D.prototype.updateMatrixWorld.call( this, force );

		position.setFromMatrixPosition( this.matrixWorld );

		this.panner.setPosition( position.x, position.y, position.z );

	};

} )();

// File:src/audio/AudioListener.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.AudioListener = function () {

	THREE.Object3D.call( this );

	this.type = 'AudioListener';

	this.context = new ( window.AudioContext || window.webkitAudioContext )();

	this.gain = this.context.createGain();
	this.gain.connect( this.context.destination );

	this.filter = null;

};

THREE.AudioListener.prototype = Object.create( THREE.Object3D.prototype );
THREE.AudioListener.prototype.constructor = THREE.AudioListener;

THREE.AudioListener.prototype.getInput = function () {

	return this.gain;

};

THREE.AudioListener.prototype.removeFilter = function ( ) {

	if ( this.filter !== null ) {

		this.gain.disconnect( this.filter );
		this.filter.disconnect( this.context.destination );
		this.gain.connect( this.context.destination );
		this.filter = null;

	}

};

THREE.AudioListener.prototype.setFilter = function ( value ) {

	if ( this.filter !== null ) {

		this.gain.disconnect( this.filter );
		this.filter.disconnect( this.context.destination );

	} else {

		this.gain.disconnect( this.context.destination );

	}

	this.filter = value;
	this.gain.connect( this.filter );
	this.filter.connect( this.context.destination );

};

THREE.AudioListener.prototype.getFilter = function () {

	return this.filter;

};

THREE.AudioListener.prototype.setMasterVolume = function ( value ) {

	this.gain.gain.value = value;

};

THREE.AudioListener.prototype.getMasterVolume = function () {

	return this.gain.gain.value;

};


THREE.AudioListener.prototype.updateMatrixWorld = ( function () {

	var position = new THREE.Vector3();
	var quaternion = new THREE.Quaternion();
	var scale = new THREE.Vector3();

	var orientation = new THREE.Vector3();

	return function updateMatrixWorld( force ) {

		THREE.Object3D.prototype.updateMatrixWorld.call( this, force );

		var listener = this.context.listener;
		var up = this.up;

		this.matrixWorld.decompose( position, quaternion, scale );

		orientation.set( 0, 0, - 1 ).applyQuaternion( quaternion );

		listener.setPosition( position.x, position.y, position.z );
		listener.setOrientation( orientation.x, orientation.y, orientation.z, up.x, up.y, up.z );

	};

} )();

// File:src/cameras/Camera.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author mikael emtinger / http://gomo.se/
 * @author WestLangley / http://github.com/WestLangley
*/

THREE.Camera = function () {

	THREE.Object3D.call( this );

	this.type = 'Camera';

	this.matrixWorldInverse = new THREE.Matrix4();
	this.projectionMatrix = new THREE.Matrix4();

};

THREE.Camera.prototype = Object.create( THREE.Object3D.prototype );
THREE.Camera.prototype.constructor = THREE.Camera;

THREE.Camera.prototype.getWorldDirection = function () {

	var quaternion = new THREE.Quaternion();

	return function ( optionalTarget ) {

		var result = optionalTarget || new THREE.Vector3();

		this.getWorldQuaternion( quaternion );

		return result.set( 0, 0, - 1 ).applyQuaternion( quaternion );

	};

}();

THREE.Camera.prototype.lookAt = function () {

	// This routine does not support cameras with rotated and/or translated parent(s)

	var m1 = new THREE.Matrix4();

	return function ( vector ) {

		m1.lookAt( this.position, vector, this.up );

		this.quaternion.setFromRotationMatrix( m1 );

	};

}();

THREE.Camera.prototype.clone = function () {

	return new this.constructor().copy( this );

};

THREE.Camera.prototype.copy = function ( source ) {

	THREE.Object3D.prototype.copy.call( this, source );

	this.matrixWorldInverse.copy( source.matrixWorldInverse );
	this.projectionMatrix.copy( source.projectionMatrix );

	return this;

};

// File:src/cameras/CubeCamera.js

/**
 * Camera for rendering cube maps
 *	- renders scene into axis-aligned cube
 *
 * @author alteredq / http://alteredqualia.com/
 */

THREE.CubeCamera = function ( near, far, cubeResolution ) {

	THREE.Object3D.call( this );

	this.type = 'CubeCamera';

	var fov = 90, aspect = 1;

	var cameraPX = new THREE.PerspectiveCamera( fov, aspect, near, far );
	cameraPX.up.set( 0, - 1, 0 );
	cameraPX.lookAt( new THREE.Vector3( 1, 0, 0 ) );
	this.add( cameraPX );

	var cameraNX = new THREE.PerspectiveCamera( fov, aspect, near, far );
	cameraNX.up.set( 0, - 1, 0 );
	cameraNX.lookAt( new THREE.Vector3( - 1, 0, 0 ) );
	this.add( cameraNX );

	var cameraPY = new THREE.PerspectiveCamera( fov, aspect, near, far );
	cameraPY.up.set( 0, 0, 1 );
	cameraPY.lookAt( new THREE.Vector3( 0, 1, 0 ) );
	this.add( cameraPY );

	var cameraNY = new THREE.PerspectiveCamera( fov, aspect, near, far );
	cameraNY.up.set( 0, 0, - 1 );
	cameraNY.lookAt( new THREE.Vector3( 0, - 1, 0 ) );
	this.add( cameraNY );

	var cameraPZ = new THREE.PerspectiveCamera( fov, aspect, near, far );
	cameraPZ.up.set( 0, - 1, 0 );
	cameraPZ.lookAt( new THREE.Vector3( 0, 0, 1 ) );
	this.add( cameraPZ );

	var cameraNZ = new THREE.PerspectiveCamera( fov, aspect, near, far );
	cameraNZ.up.set( 0, - 1, 0 );
	cameraNZ.lookAt( new THREE.Vector3( 0, 0, - 1 ) );
	this.add( cameraNZ );

	var options = { format: THREE.RGBFormat, magFilter: THREE.LinearFilter, minFilter: THREE.LinearFilter };

	this.renderTarget = new THREE.WebGLRenderTargetCube( cubeResolution, cubeResolution, options );

	this.updateCubeMap = function ( renderer, scene ) {

		if ( this.parent === null ) this.updateMatrixWorld();

		var renderTarget = this.renderTarget;
		var generateMipmaps = renderTarget.texture.generateMipmaps;

		renderTarget.texture.generateMipmaps = false;

		renderTarget.activeCubeFace = 0;
		renderer.render( scene, cameraPX, renderTarget );

		renderTarget.activeCubeFace = 1;
		renderer.render( scene, cameraNX, renderTarget );

		renderTarget.activeCubeFace = 2;
		renderer.render( scene, cameraPY, renderTarget );

		renderTarget.activeCubeFace = 3;
		renderer.render( scene, cameraNY, renderTarget );

		renderTarget.activeCubeFace = 4;
		renderer.render( scene, cameraPZ, renderTarget );

		renderTarget.texture.generateMipmaps = generateMipmaps;

		renderTarget.activeCubeFace = 5;
		renderer.render( scene, cameraNZ, renderTarget );

		renderer.setRenderTarget( null );

	};

};

THREE.CubeCamera.prototype = Object.create( THREE.Object3D.prototype );
THREE.CubeCamera.prototype.constructor = THREE.CubeCamera;

// File:src/cameras/OrthographicCamera.js

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.OrthographicCamera = function ( left, right, top, bottom, near, far ) {

	THREE.Camera.call( this );

	this.type = 'OrthographicCamera';

	this.zoom = 1;

	this.left = left;
	this.right = right;
	this.top = top;
	this.bottom = bottom;

	this.near = ( near !== undefined ) ? near : 0.1;
	this.far = ( far !== undefined ) ? far : 2000;

	this.updateProjectionMatrix();

};

THREE.OrthographicCamera.prototype = Object.create( THREE.Camera.prototype );
THREE.OrthographicCamera.prototype.constructor = THREE.OrthographicCamera;

THREE.OrthographicCamera.prototype.updateProjectionMatrix = function () {

	var dx = ( this.right - this.left ) / ( 2 * this.zoom );
	var dy = ( this.top - this.bottom ) / ( 2 * this.zoom );
	var cx = ( this.right + this.left ) / 2;
	var cy = ( this.top + this.bottom ) / 2;

	this.projectionMatrix.makeOrthographic( cx - dx, cx + dx, cy + dy, cy - dy, this.near, this.far );

};

THREE.OrthographicCamera.prototype.copy = function ( source ) {

	THREE.Camera.prototype.copy.call( this, source );

	this.left = source.left;
	this.right = source.right;
	this.top = source.top;
	this.bottom = source.bottom;
	this.near = source.near;
	this.far = source.far;

	this.zoom = source.zoom;

	return this;

};

THREE.OrthographicCamera.prototype.toJSON = function ( meta ) {

	var data = THREE.Object3D.prototype.toJSON.call( this, meta );

	data.object.zoom = this.zoom;
	data.object.left = this.left;
	data.object.right = this.right;
	data.object.top = this.top;
	data.object.bottom = this.bottom;
	data.object.near = this.near;
	data.object.far = this.far;

	return data;

};

// File:src/cameras/PerspectiveCamera.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author greggman / http://games.greggman.com/
 * @author zz85 / http://www.lab4games.net/zz85/blog
 */

THREE.PerspectiveCamera = function ( fov, aspect, near, far ) {

	THREE.Camera.call( this );

	this.type = 'PerspectiveCamera';

	this.focalLength = 10;
	this.zoom = 1;

	this.fov = fov !== undefined ? fov : 50;
	this.aspect = aspect !== undefined ? aspect : 1;
	this.near = near !== undefined ? near : 0.1;
	this.far = far !== undefined ? far : 2000;

	this.updateProjectionMatrix();

};

THREE.PerspectiveCamera.prototype = Object.create( THREE.Camera.prototype );
THREE.PerspectiveCamera.prototype.constructor = THREE.PerspectiveCamera;


/**
 * Uses Focal Length (in mm) to estimate and set FOV
 * 35mm (full-frame) camera is used if frame size is not specified;
 * Formula based on http://www.bobatkins.com/photography/technical/field_of_view.html
 */

THREE.PerspectiveCamera.prototype.setLens = function ( focalLength, frameHeight ) {

	if ( frameHeight === undefined ) frameHeight = 24;

	this.fov = 2 * THREE.Math.radToDeg( Math.atan( frameHeight / ( focalLength * 2 ) ) );
	this.updateProjectionMatrix();

};


/**
 * Sets an offset in a larger frustum. This is useful for multi-window or
 * multi-monitor/multi-machine setups.
 *
 * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
 * the monitors are in grid like this
 *
 *   +---+---+---+
 *   | A | B | C |
 *   +---+---+---+
 *   | D | E | F |
 *   +---+---+---+
 *
 * then for each monitor you would call it like this
 *
 *   var w = 1920;
 *   var h = 1080;
 *   var fullWidth = w * 3;
 *   var fullHeight = h * 2;
 *
 *   --A--
 *   camera.setOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
 *   --B--
 *   camera.setOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
 *   --C--
 *   camera.setOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
 *   --D--
 *   camera.setOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
 *   --E--
 *   camera.setOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
 *   --F--
 *   camera.setOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
 *
 *   Note there is no reason monitors have to be the same size or in a grid.
 */

THREE.PerspectiveCamera.prototype.setViewOffset = function ( fullWidth, fullHeight, x, y, width, height ) {

	this.fullWidth = fullWidth;
	this.fullHeight = fullHeight;
	this.x = x;
	this.y = y;
	this.width = width;
	this.height = height;

	this.updateProjectionMatrix();

};


THREE.PerspectiveCamera.prototype.updateProjectionMatrix = function () {

	var fov = THREE.Math.radToDeg( 2 * Math.atan( Math.tan( THREE.Math.degToRad( this.fov ) * 0.5 ) / this.zoom ) );

	if ( this.fullWidth ) {

		var aspect = this.fullWidth / this.fullHeight;
		var top = Math.tan( THREE.Math.degToRad( fov * 0.5 ) ) * this.near;
		var bottom = - top;
		var left = aspect * bottom;
		var right = aspect * top;
		var width = Math.abs( right - left );
		var height = Math.abs( top - bottom );

		this.projectionMatrix.makeFrustum(
			left + this.x * width / this.fullWidth,
			left + ( this.x + this.width ) * width / this.fullWidth,
			top - ( this.y + this.height ) * height / this.fullHeight,
			top - this.y * height / this.fullHeight,
			this.near,
			this.far
		);

	} else {

		this.projectionMatrix.makePerspective( fov, this.aspect, this.near, this.far );

	}

};

THREE.PerspectiveCamera.prototype.copy = function ( source ) {

	THREE.Camera.prototype.copy.call( this, source );

	this.focalLength = source.focalLength;
	this.zoom = source.zoom;

	this.fov = source.fov;
	this.aspect = source.aspect;
	this.near = source.near;
	this.far = source.far;

	return this;

};

THREE.PerspectiveCamera.prototype.toJSON = function ( meta ) {

	var data = THREE.Object3D.prototype.toJSON.call( this, meta );

	data.object.focalLength = this.focalLength;
	data.object.zoom = this.zoom;

	data.object.fov = this.fov;
	data.object.aspect = this.aspect;
	data.object.near = this.near;
	data.object.far = this.far;

	return data;

};

// File:src/cameras/StereoCamera.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.StereoCamera = function () {

	this.type = 'StereoCamera';

	this.aspect = 1;

	this.cameraL = new THREE.PerspectiveCamera();
	this.cameraL.layers.enable( 1 );
	this.cameraL.matrixAutoUpdate = false;

	this.cameraR = new THREE.PerspectiveCamera();
	this.cameraR.layers.enable( 2 );
	this.cameraR.matrixAutoUpdate = false;

};

THREE.StereoCamera.prototype = {

	constructor: THREE.StereoCamera,

	update: ( function () {

		var focalLength, fov, aspect, near, far;

		var eyeRight = new THREE.Matrix4();
		var eyeLeft = new THREE.Matrix4();

		return function update ( camera ) {

			var needsUpdate = focalLength !== camera.focalLength || fov !== camera.fov ||
												aspect !== camera.aspect * this.aspect || near !== camera.near ||
												far !== camera.far;

			if ( needsUpdate ) {

				focalLength = camera.focalLength;
				fov = camera.fov;
				aspect = camera.aspect * this.aspect;
				near = camera.near;
				far = camera.far;

				// Off-axis stereoscopic effect based on
				// http://paulbourke.net/stereographics/stereorender/

				var projectionMatrix = camera.projectionMatrix.clone();
				var eyeSep = 0.064 / 2;
				var eyeSepOnProjection = eyeSep * near / focalLength;
				var ymax = near * Math.tan( THREE.Math.degToRad( fov * 0.5 ) );
				var xmin, xmax;

				// translate xOffset

				eyeLeft.elements[ 12 ] = - eyeSep;
				eyeRight.elements[ 12 ] = eyeSep;

				// for left eye

				xmin = - ymax * aspect + eyeSepOnProjection;
				xmax = ymax * aspect + eyeSepOnProjection;

				projectionMatrix.elements[ 0 ] = 2 * near / ( xmax - xmin );
				projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );

				this.cameraL.projectionMatrix.copy( projectionMatrix );

				// for right eye

				xmin = - ymax * aspect - eyeSepOnProjection;
				xmax = ymax * aspect - eyeSepOnProjection;

				projectionMatrix.elements[ 0 ] = 2 * near / ( xmax - xmin );
				projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );

				this.cameraR.projectionMatrix.copy( projectionMatrix );

			}

			this.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( eyeLeft );
			this.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( eyeRight );

		};

	} )()

};

// File:src/lights/Light.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Light = function ( color, intensity ) {

	THREE.Object3D.call( this );

	this.type = 'Light';

	this.color = new THREE.Color( color );
	this.intensity = intensity !== undefined ? intensity : 1;

	this.receiveShadow = undefined;

};

THREE.Light.prototype = Object.create( THREE.Object3D.prototype );
THREE.Light.prototype.constructor = THREE.Light;

THREE.Light.prototype.copy = function ( source ) {

	THREE.Object3D.prototype.copy.call( this, source );

	this.color.copy( source.color );
	this.intensity = source.intensity;

	return this;

};

THREE.Light.prototype.toJSON = function ( meta ) {

	var data = THREE.Object3D.prototype.toJSON.call( this, meta );

	data.object.color = this.color.getHex();
	data.object.intensity = this.intensity;

	if ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();

	if ( this.distance !== undefined ) data.object.distance = this.distance;
	if ( this.angle !== undefined ) data.object.angle = this.angle;
	if ( this.decay !== undefined ) data.object.decay = this.decay;
	if ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;

	return data;

};

// File:src/lights/LightShadow.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.LightShadow = function ( camera ) {

	this.camera = camera;

	this.bias = 0;
	this.radius = 1;

	this.mapSize = new THREE.Vector2( 512, 512 );

	this.map = null;
	this.matrix = new THREE.Matrix4();

};

THREE.LightShadow.prototype = {

	constructor: THREE.LightShadow,

	copy: function ( source ) {

		this.camera = source.camera.clone();

		this.bias = source.bias;
		this.radius = source.radius;

		this.mapSize.copy( source.mapSize );

		return this;

	},

	clone: function () {

		return new this.constructor().copy( this );

	}

};

// File:src/lights/AmbientLight.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.AmbientLight = function ( color, intensity ) {

	THREE.Light.call( this, color, intensity );

	this.type = 'AmbientLight';

	this.castShadow = undefined;

};

THREE.AmbientLight.prototype = Object.create( THREE.Light.prototype );
THREE.AmbientLight.prototype.constructor = THREE.AmbientLight;

// File:src/lights/DirectionalLight.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.DirectionalLight = function ( color, intensity ) {

	THREE.Light.call( this, color, intensity );

	this.type = 'DirectionalLight';

	this.position.set( 0, 1, 0 );
	this.updateMatrix();

	this.target = new THREE.Object3D();

	this.shadow = new THREE.LightShadow( new THREE.OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );

};

THREE.DirectionalLight.prototype = Object.create( THREE.Light.prototype );
THREE.DirectionalLight.prototype.constructor = THREE.DirectionalLight;

THREE.DirectionalLight.prototype.copy = function ( source ) {

	THREE.Light.prototype.copy.call( this, source );

	this.target = source.target.clone();

	this.shadow = source.shadow.clone();

	return this;

};

// File:src/lights/HemisphereLight.js

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.HemisphereLight = function ( skyColor, groundColor, intensity ) {

	THREE.Light.call( this, skyColor, intensity );

	this.type = 'HemisphereLight';

	this.castShadow = undefined;

	this.position.set( 0, 1, 0 );
	this.updateMatrix();

	this.groundColor = new THREE.Color( groundColor );

};

THREE.HemisphereLight.prototype = Object.create( THREE.Light.prototype );
THREE.HemisphereLight.prototype.constructor = THREE.HemisphereLight;

THREE.HemisphereLight.prototype.copy = function ( source ) {

	THREE.Light.prototype.copy.call( this, source );

	this.groundColor.copy( source.groundColor );

	return this;

};

// File:src/lights/PointLight.js

/**
 * @author mrdoob / http://mrdoob.com/
 */


THREE.PointLight = function ( color, intensity, distance, decay ) {

	THREE.Light.call( this, color, intensity );

	this.type = 'PointLight';

	this.distance = ( distance !== undefined ) ? distance : 0;
	this.decay = ( decay !== undefined ) ? decay : 1;	// for physically correct lights, should be 2.

	this.shadow = new THREE.LightShadow( new THREE.PerspectiveCamera( 90, 1, 0.5, 500 ) );

};

THREE.PointLight.prototype = Object.create( THREE.Light.prototype );
THREE.PointLight.prototype.constructor = THREE.PointLight;

THREE.PointLight.prototype.copy = function ( source ) {

	THREE.Light.prototype.copy.call( this, source );

	this.distance = source.distance;
	this.decay = source.decay;

	this.shadow = source.shadow.clone();

	return this;

};

// File:src/lights/SpotLight.js

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.SpotLight = function ( color, intensity, distance, angle, penumbra, decay ) {

	THREE.Light.call( this, color, intensity );

	this.type = 'SpotLight';

	this.position.set( 0, 1, 0 );
	this.updateMatrix();

	this.target = new THREE.Object3D();

	this.distance = ( distance !== undefined ) ? distance : 0;
	this.angle = ( angle !== undefined ) ? angle : Math.PI / 3;
	this.penumbra = ( penumbra !== undefined ) ? penumbra : 0;
	this.decay = ( decay !== undefined ) ? decay : 1;	// for physically correct lights, should be 2.

	this.shadow = new THREE.LightShadow( new THREE.PerspectiveCamera( 50, 1, 0.5, 500 ) );

};

THREE.SpotLight.prototype = Object.create( THREE.Light.prototype );
THREE.SpotLight.prototype.constructor = THREE.SpotLight;

THREE.SpotLight.prototype.copy = function ( source ) {

	THREE.Light.prototype.copy.call( this, source );

	this.distance = source.distance;
	this.angle = source.angle;
	this.penumbra = source.penumbra;
	this.decay = source.decay;

	this.target = source.target.clone();

	this.shadow = source.shadow.clone();

	return this;

};

// File:src/loaders/Cache.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Cache = {

	enabled: false,

	files: {},

	add: function ( key, file ) {

		if ( this.enabled === false ) return;

		// console.log( 'THREE.Cache', 'Adding key:', key );

		this.files[ key ] = file;

	},

	get: function ( key ) {

		if ( this.enabled === false ) return;

		// console.log( 'THREE.Cache', 'Checking key:', key );

		return this.files[ key ];

	},

	remove: function ( key ) {

		delete this.files[ key ];

	},

	clear: function () {

		this.files = {};

	}

};

// File:src/loaders/Loader.js

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Loader = function () {

	this.onLoadStart = function () {};
	this.onLoadProgress = function () {};
	this.onLoadComplete = function () {};

};

THREE.Loader.prototype = {

	constructor: THREE.Loader,

	crossOrigin: undefined,

	extractUrlBase: function ( url ) {

		var parts = url.split( '/' );

		if ( parts.length === 1 ) return './';

		parts.pop();

		return parts.join( '/' ) + '/';

	},

	initMaterials: function ( materials, texturePath, crossOrigin ) {

		var array = [];

		for ( var i = 0; i < materials.length; ++ i ) {

			array[ i ] = this.createMaterial( materials[ i ], texturePath, crossOrigin );

		}

		return array;

	},

	createMaterial: ( function () {

		var color, textureLoader, materialLoader;

		return function ( m, texturePath, crossOrigin ) {

			if ( color === undefined ) color = new THREE.Color();
			if ( textureLoader === undefined ) textureLoader = new THREE.TextureLoader();
			if ( materialLoader === undefined ) materialLoader = new THREE.MaterialLoader();

			// convert from old material format

			var textures = {};

			function loadTexture( path, repeat, offset, wrap, anisotropy ) {

				var fullPath = texturePath + path;
				var loader = THREE.Loader.Handlers.get( fullPath );

				var texture;

				if ( loader !== null ) {

					texture = loader.load( fullPath );

				} else {

					textureLoader.setCrossOrigin( crossOrigin );
					texture = textureLoader.load( fullPath );

				}

				if ( repeat !== undefined ) {

					texture.repeat.fromArray( repeat );

					if ( repeat[ 0 ] !== 1 ) texture.wrapS = THREE.RepeatWrapping;
					if ( repeat[ 1 ] !== 1 ) texture.wrapT = THREE.RepeatWrapping;

				}

				if ( offset !== undefined ) {

					texture.offset.fromArray( offset );

				}

				if ( wrap !== undefined ) {

					if ( wrap[ 0 ] === 'repeat' ) texture.wrapS = THREE.RepeatWrapping;
					if ( wrap[ 0 ] === 'mirror' ) texture.wrapS = THREE.MirroredRepeatWrapping;

					if ( wrap[ 1 ] === 'repeat' ) texture.wrapT = THREE.RepeatWrapping;
					if ( wrap[ 1 ] === 'mirror' ) texture.wrapT = THREE.MirroredRepeatWrapping;

				}

				if ( anisotropy !== undefined ) {

					texture.anisotropy = anisotropy;

				}

				var uuid = THREE.Math.generateUUID();

				textures[ uuid ] = texture;

				return uuid;

			}

			//

			var json = {
				uuid: THREE.Math.generateUUID(),
				type: 'MeshLambertMaterial'
			};

			for ( var name in m ) {

				var value = m[ name ];

				switch ( name ) {
					case 'DbgColor':
					case 'DbgIndex':
					case 'opticalDensity':
					case 'illumination':
						break;
					case 'DbgName':
						json.name = value;
						break;
					case 'blending':
						json.blending = THREE[ value ];
						break;
					case 'colorAmbient':
					case 'mapAmbient':
						console.warn( 'THREE.Loader.createMaterial:', name, 'is no longer supported.' );
						break;
					case 'colorDiffuse':
						json.color = color.fromArray( value ).getHex();
						break;
					case 'colorSpecular':
						json.specular = color.fromArray( value ).getHex();
						break;
					case 'colorEmissive':
						json.emissive = color.fromArray( value ).getHex();
						break;
					case 'specularCoef':
						json.shininess = value;
						break;
					case 'shading':
						if ( value.toLowerCase() === 'basic' ) json.type = 'MeshBasicMaterial';
						if ( value.toLowerCase() === 'phong' ) json.type = 'MeshPhongMaterial';
						break;
					case 'mapDiffuse':
						json.map = loadTexture( value, m.mapDiffuseRepeat, m.mapDiffuseOffset, m.mapDiffuseWrap, m.mapDiffuseAnisotropy );
						break;
					case 'mapDiffuseRepeat':
					case 'mapDiffuseOffset':
					case 'mapDiffuseWrap':
					case 'mapDiffuseAnisotropy':
						break;
					case 'mapLight':
						json.lightMap = loadTexture( value, m.mapLightRepeat, m.mapLightOffset, m.mapLightWrap, m.mapLightAnisotropy );
						break;
					case 'mapLightRepeat':
					case 'mapLightOffset':
					case 'mapLightWrap':
					case 'mapLightAnisotropy':
						break;
					case 'mapAO':
						json.aoMap = loadTexture( value, m.mapAORepeat, m.mapAOOffset, m.mapAOWrap, m.mapAOAnisotropy );
						break;
					case 'mapAORepeat':
					case 'mapAOOffset':
					case 'mapAOWrap':
					case 'mapAOAnisotropy':
						break;
					case 'mapBump':
						json.bumpMap = loadTexture( value, m.mapBumpRepeat, m.mapBumpOffset, m.mapBumpWrap, m.mapBumpAnisotropy );
						break;
					case 'mapBumpScale':
						json.bumpScale = value;
						break;
					case 'mapBumpRepeat':
					case 'mapBumpOffset':
					case 'mapBumpWrap':
					case 'mapBumpAnisotropy':
						break;
					case 'mapNormal':
						json.normalMap = loadTexture( value, m.mapNormalRepeat, m.mapNormalOffset, m.mapNormalWrap, m.mapNormalAnisotropy );
						break;
					case 'mapNormalFactor':
						json.normalScale = [ value, value ];
						break;
					case 'mapNormalRepeat':
					case 'mapNormalOffset':
					case 'mapNormalWrap':
					case 'mapNormalAnisotropy':
						break;
					case 'mapSpecular':
						json.specularMap = loadTexture( value, m.mapSpecularRepeat, m.mapSpecularOffset, m.mapSpecularWrap, m.mapSpecularAnisotropy );
						break;
					case 'mapSpecularRepeat':
					case 'mapSpecularOffset':
					case 'mapSpecularWrap':
					case 'mapSpecularAnisotropy':
						break;
					case 'mapAlpha':
						json.alphaMap = loadTexture( value, m.mapAlphaRepeat, m.mapAlphaOffset, m.mapAlphaWrap, m.mapAlphaAnisotropy );
						break;
					case 'mapAlphaRepeat':
					case 'mapAlphaOffset':
					case 'mapAlphaWrap':
					case 'mapAlphaAnisotropy':
						break;
					case 'flipSided':
						json.side = THREE.BackSide;
						break;
					case 'doubleSided':
						json.side = THREE.DoubleSide;
						break;
					case 'transparency':
						console.warn( 'THREE.Loader.createMaterial: transparency has been renamed to opacity' );
						json.opacity = value;
						break;
					case 'depthTest':
					case 'depthWrite':
					case 'colorWrite':
					case 'opacity':
					case 'reflectivity':
					case 'transparent':
					case 'visible':
					case 'wireframe':
						json[ name ] = value;
						break;
					case 'vertexColors':
						if ( value === true ) json.vertexColors = THREE.VertexColors;
						if ( value === 'face' ) json.vertexColors = THREE.FaceColors;
						break;
					default:
						console.error( 'THREE.Loader.createMaterial: Unsupported', name, value );
						break;
				}

			}

			if ( json.type === 'MeshBasicMaterial' ) delete json.emissive;
			if ( json.type !== 'MeshPhongMaterial' ) delete json.specular;

			if ( json.opacity < 1 ) json.transparent = true;

			materialLoader.setTextures( textures );

			return materialLoader.parse( json );

		};

	} )()

};

THREE.Loader.Handlers = {

	handlers: [],

	add: function ( regex, loader ) {

		this.handlers.push( regex, loader );

	},

	get: function ( file ) {

		var handlers = this.handlers;

		for ( var i = 0, l = handlers.length; i < l; i += 2 ) {

			var regex = handlers[ i ];
			var loader  = handlers[ i + 1 ];

			if ( regex.test( file ) ) {

				return loader;

			}

		}

		return null;

	}

};

// File:src/loaders/XHRLoader.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.XHRLoader = function ( manager ) {

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;

};

THREE.XHRLoader.prototype = {

	constructor: THREE.XHRLoader,

	load: function ( url, onLoad, onProgress, onError ) {

		if ( this.path !== undefined ) url = this.path + url;

		var scope = this;

		var cached = THREE.Cache.get( url );

		if ( cached !== undefined ) {

			if ( onLoad ) {

				setTimeout( function () {

					onLoad( cached );

				}, 0 );

			}

			return cached;

		}

		var request = new XMLHttpRequest();
		request.overrideMimeType( 'text/plain' );
		request.open( 'GET', url, true );

		request.addEventListener( 'load', function ( event ) {

			var response = event.target.response;

			THREE.Cache.add( url, response );

			if ( this.status === 200 ) {

				if ( onLoad ) onLoad( response );

				scope.manager.itemEnd( url );

			} else if ( this.status === 0 ) {

				// Some browsers return HTTP Status 0 when using non-http protocol
				// e.g. 'file://' or 'data://'. Handle as success.

				console.warn( 'THREE.XHRLoader: HTTP Status 0 received.' );

				if ( onLoad ) onLoad( response );

				scope.manager.itemEnd( url );

			} else {

				if ( onError ) onError( event );

				scope.manager.itemError( url );

			}

		}, false );

		if ( onProgress !== undefined ) {

			request.addEventListener( 'progress', function ( event ) {

				onProgress( event );

			}, false );

		}

		request.addEventListener( 'error', function ( event ) {

			if ( onError ) onError( event );

			scope.manager.itemError( url );

		}, false );

		if ( this.responseType !== undefined ) request.responseType = this.responseType;
		if ( this.withCredentials !== undefined ) request.withCredentials = this.withCredentials;

		request.send( null );

		scope.manager.itemStart( url );

		return request;

	},

	setPath: function ( value ) {

		this.path = value;

	},

	setResponseType: function ( value ) {

		this.responseType = value;

	},

	setWithCredentials: function ( value ) {

		this.withCredentials = value;

	}

};

// File:src/loaders/FontLoader.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.FontLoader = function ( manager ) {

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;

};

THREE.FontLoader.prototype = {

	constructor: THREE.FontLoader,

	load: function ( url, onLoad, onProgress, onError ) {

		var loader = new THREE.XHRLoader( this.manager );
		loader.load( url, function ( text ) {

			onLoad( new THREE.Font( JSON.parse( text.substring( 65, text.length - 2 ) ) ) );

		}, onProgress, onError );

	}

};

// File:src/loaders/ImageLoader.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.ImageLoader = function ( manager ) {

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;

};

THREE.ImageLoader.prototype = {

	constructor: THREE.ImageLoader,

	load: function ( url, onLoad, onProgress, onError ) {

		if ( this.path !== undefined ) url = this.path + url;

		var scope = this;

		var cached = THREE.Cache.get( url );

		if ( cached !== undefined ) {

			scope.manager.itemStart( url );

			if ( onLoad ) {

				setTimeout( function () {

					onLoad( cached );

					scope.manager.itemEnd( url );

				}, 0 );

			} else {

				scope.manager.itemEnd( url );

			}

			return cached;

		}

		var image = document.createElement( 'img' );

		image.addEventListener( 'load', function ( event ) {

			THREE.Cache.add( url, this );

			if ( onLoad ) onLoad( this );

			scope.manager.itemEnd( url );

		}, false );

		if ( onProgress !== undefined ) {

			image.addEventListener( 'progress', function ( event ) {

				onProgress( event );

			}, false );

		}

		image.addEventListener( 'error', function ( event ) {

			if ( onError ) onError( event );

			scope.manager.itemError( url );

		}, false );

		if ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;

		scope.manager.itemStart( url );

		image.src = url;

		return image;

	},

	setCrossOrigin: function ( value ) {

		this.crossOrigin = value;

	},

	setPath: function ( value ) {

		this.path = value;

	}

};

// File:src/loaders/JSONLoader.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.JSONLoader = function ( manager ) {

	if ( typeof manager === 'boolean' ) {

		console.warn( 'THREE.JSONLoader: showStatus parameter has been removed from constructor.' );
		manager = undefined;

	}

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;

	this.withCredentials = false;

};

THREE.JSONLoader.prototype = {

	constructor: THREE.JSONLoader,

	// Deprecated

	get statusDomElement () {

		if ( this._statusDomElement === undefined ) {

			this._statusDomElement = document.createElement( 'div' );

		}

		console.warn( 'THREE.JSONLoader: .statusDomElement has been removed.' );
		return this._statusDomElement;

	},

	load: function( url, onLoad, onProgress, onError ) {

		var scope = this;

		var texturePath = this.texturePath && ( typeof this.texturePath === "string" ) ? this.texturePath : THREE.Loader.prototype.extractUrlBase( url );

		var loader = new THREE.XHRLoader( this.manager );
		loader.setWithCredentials( this.withCredentials );
		loader.load( url, function ( text ) {

			var json = JSON.parse( text );
			var metadata = json.metadata;

			if ( metadata !== undefined ) {

				var type = metadata.type;

				if ( type !== undefined ) {

					if ( type.toLowerCase() === 'object' ) {

						console.error( 'THREE.JSONLoader: ' + url + ' should be loaded with THREE.ObjectLoader instead.' );
						return;

					}

					if ( type.toLowerCase() === 'scene' ) {

						console.error( 'THREE.JSONLoader: ' + url + ' should be loaded with THREE.SceneLoader instead.' );
						return;

					}

				}

			}

			var object = scope.parse( json, texturePath );
			onLoad( object.geometry, object.materials );

		}, onProgress, onError );

	},

	setTexturePath: function ( value ) {

		this.texturePath = value;

	},

	parse: function ( json, texturePath ) {

		var geometry = new THREE.Geometry(),
		scale = ( json.scale !== undefined ) ? 1.0 / json.scale : 1.0;

		parseModel( scale );

		parseSkin();
		parseMorphing( scale );
		parseAnimations();

		geometry.computeFaceNormals();
		geometry.computeBoundingSphere();

		function parseModel( scale ) {

			function isBitSet( value, position ) {

				return value & ( 1 << position );

			}

			var i, j, fi,

			offset, zLength,

		colorIndex, normalIndex, uvIndex, materialIndex,

			type,
			isQuad,
			hasMaterial,
			hasFaceVertexUv,
			hasFaceNormal, hasFaceVertexNormal,
			hasFaceColor, hasFaceVertexColor,

		vertex, face, faceA, faceB, hex, normal,

			uvLayer, uv, u, v,

			faces = json.faces,
			vertices = json.vertices,
			normals = json.normals,
			colors = json.colors,

			nUvLayers = 0;

			if ( json.uvs !== undefined ) {

				// disregard empty arrays

				for ( i = 0; i < json.uvs.length; i ++ ) {

					if ( json.uvs[ i ].length ) nUvLayers ++;

				}

				for ( i = 0; i < nUvLayers; i ++ ) {

					geometry.faceVertexUvs[ i ] = [];

				}

			}

			offset = 0;
			zLength = vertices.length;

			while ( offset < zLength ) {

				vertex = new THREE.Vector3();

				vertex.x = vertices[ offset ++ ] * scale;
				vertex.y = vertices[ offset ++ ] * scale;
				vertex.z = vertices[ offset ++ ] * scale;

				geometry.vertices.push( vertex );

			}

			offset = 0;
			zLength = faces.length;

			while ( offset < zLength ) {

				type = faces[ offset ++ ];


				isQuad              = isBitSet( type, 0 );
				hasMaterial         = isBitSet( type, 1 );
				hasFaceVertexUv     = isBitSet( type, 3 );
				hasFaceNormal       = isBitSet( type, 4 );
				hasFaceVertexNormal = isBitSet( type, 5 );
				hasFaceColor	     = isBitSet( type, 6 );
				hasFaceVertexColor  = isBitSet( type, 7 );

				// console.log("type", type, "bits", isQuad, hasMaterial, hasFaceVertexUv, hasFaceNormal, hasFaceVertexNormal, hasFaceColor, hasFaceVertexColor);

				if ( isQuad ) {

					faceA = new THREE.Face3();
					faceA.a = faces[ offset ];
					faceA.b = faces[ offset + 1 ];
					faceA.c = faces[ offset + 3 ];

					faceB = new THREE.Face3();
					faceB.a = faces[ offset + 1 ];
					faceB.b = faces[ offset + 2 ];
					faceB.c = faces[ offset + 3 ];

					offset += 4;

					if ( hasMaterial ) {

						materialIndex = faces[ offset ++ ];
						faceA.materialIndex = materialIndex;
						faceB.materialIndex = materialIndex;

					}

					// to get face <=> uv index correspondence

					fi = geometry.faces.length;

					if ( hasFaceVertexUv ) {

						for ( i = 0; i < nUvLayers; i ++ ) {

							uvLayer = json.uvs[ i ];

							geometry.faceVertexUvs[ i ][ fi ] = [];
							geometry.faceVertexUvs[ i ][ fi + 1 ] = [];

							for ( j = 0; j < 4; j ++ ) {

								uvIndex = faces[ offset ++ ];

								u = uvLayer[ uvIndex * 2 ];
								v = uvLayer[ uvIndex * 2 + 1 ];

								uv = new THREE.Vector2( u, v );

								if ( j !== 2 ) geometry.faceVertexUvs[ i ][ fi ].push( uv );
								if ( j !== 0 ) geometry.faceVertexUvs[ i ][ fi + 1 ].push( uv );

							}

						}

					}

					if ( hasFaceNormal ) {

						normalIndex = faces[ offset ++ ] * 3;

						faceA.normal.set(
							normals[ normalIndex ++ ],
							normals[ normalIndex ++ ],
							normals[ normalIndex ]
						);

						faceB.normal.copy( faceA.normal );

					}

					if ( hasFaceVertexNormal ) {

						for ( i = 0; i < 4; i ++ ) {

							normalIndex = faces[ offset ++ ] * 3;

							normal = new THREE.Vector3(
								normals[ normalIndex ++ ],
								normals[ normalIndex ++ ],
								normals[ normalIndex ]
							);


							if ( i !== 2 ) faceA.vertexNormals.push( normal );
							if ( i !== 0 ) faceB.vertexNormals.push( normal );

						}

					}


					if ( hasFaceColor ) {

						colorIndex = faces[ offset ++ ];
						hex = colors[ colorIndex ];

						faceA.color.setHex( hex );
						faceB.color.setHex( hex );

					}


					if ( hasFaceVertexColor ) {

						for ( i = 0; i < 4; i ++ ) {

							colorIndex = faces[ offset ++ ];
							hex = colors[ colorIndex ];

							if ( i !== 2 ) faceA.vertexColors.push( new THREE.Color( hex ) );
							if ( i !== 0 ) faceB.vertexColors.push( new THREE.Color( hex ) );

						}

					}

					geometry.faces.push( faceA );
					geometry.faces.push( faceB );

				} else {

					face = new THREE.Face3();
					face.a = faces[ offset ++ ];
					face.b = faces[ offset ++ ];
					face.c = faces[ offset ++ ];

					if ( hasMaterial ) {

						materialIndex = faces[ offset ++ ];
						face.materialIndex = materialIndex;

					}

					// to get face <=> uv index correspondence

					fi = geometry.faces.length;

					if ( hasFaceVertexUv ) {

						for ( i = 0; i < nUvLayers; i ++ ) {

							uvLayer = json.uvs[ i ];

							geometry.faceVertexUvs[ i ][ fi ] = [];

							for ( j = 0; j < 3; j ++ ) {

								uvIndex = faces[ offset ++ ];

								u = uvLayer[ uvIndex * 2 ];
								v = uvLayer[ uvIndex * 2 + 1 ];

								uv = new THREE.Vector2( u, v );

								geometry.faceVertexUvs[ i ][ fi ].push( uv );

							}

						}

					}

					if ( hasFaceNormal ) {

						normalIndex = faces[ offset ++ ] * 3;

						face.normal.set(
							normals[ normalIndex ++ ],
							normals[ normalIndex ++ ],
							normals[ normalIndex ]
						);

					}

					if ( hasFaceVertexNormal ) {

						for ( i = 0; i < 3; i ++ ) {

							normalIndex = faces[ offset ++ ] * 3;

							normal = new THREE.Vector3(
								normals[ normalIndex ++ ],
								normals[ normalIndex ++ ],
								normals[ normalIndex ]
							);

							face.vertexNormals.push( normal );

						}

					}


					if ( hasFaceColor ) {

						colorIndex = faces[ offset ++ ];
						face.color.setHex( colors[ colorIndex ] );

					}


					if ( hasFaceVertexColor ) {

						for ( i = 0; i < 3; i ++ ) {

							colorIndex = faces[ offset ++ ];
							face.vertexColors.push( new THREE.Color( colors[ colorIndex ] ) );

						}

					}

					geometry.faces.push( face );

				}

			}

		};

		function parseSkin() {

			var influencesPerVertex = ( json.influencesPerVertex !== undefined ) ? json.influencesPerVertex : 2;

			if ( json.skinWeights ) {

				for ( var i = 0, l = json.skinWeights.length; i < l; i += influencesPerVertex ) {

					var x =                               json.skinWeights[ i ];
					var y = ( influencesPerVertex > 1 ) ? json.skinWeights[ i + 1 ] : 0;
					var z = ( influencesPerVertex > 2 ) ? json.skinWeights[ i + 2 ] : 0;
					var w = ( influencesPerVertex > 3 ) ? json.skinWeights[ i + 3 ] : 0;

					geometry.skinWeights.push( new THREE.Vector4( x, y, z, w ) );

				}

			}

			if ( json.skinIndices ) {

				for ( var i = 0, l = json.skinIndices.length; i < l; i += influencesPerVertex ) {

					var a =                               json.skinIndices[ i ];
					var b = ( influencesPerVertex > 1 ) ? json.skinIndices[ i + 1 ] : 0;
					var c = ( influencesPerVertex > 2 ) ? json.skinIndices[ i + 2 ] : 0;
					var d = ( influencesPerVertex > 3 ) ? json.skinIndices[ i + 3 ] : 0;

					geometry.skinIndices.push( new THREE.Vector4( a, b, c, d ) );

				}

			}

			geometry.bones = json.bones;

			if ( geometry.bones && geometry.bones.length > 0 && ( geometry.skinWeights.length !== geometry.skinIndices.length || geometry.skinIndices.length !== geometry.vertices.length ) ) {

				console.warn( 'When skinning, number of vertices (' + geometry.vertices.length + '), skinIndices (' +
					geometry.skinIndices.length + '), and skinWeights (' + geometry.skinWeights.length + ') should match.' );

			}

		};

		function parseMorphing( scale ) {

			if ( json.morphTargets !== undefined ) {

				for ( var i = 0, l = json.morphTargets.length; i < l; i ++ ) {

					geometry.morphTargets[ i ] = {};
					geometry.morphTargets[ i ].name = json.morphTargets[ i ].name;
					geometry.morphTargets[ i ].vertices = [];

					var dstVertices = geometry.morphTargets[ i ].vertices;
					var srcVertices = json.morphTargets[ i ].vertices;

					for ( var v = 0, vl = srcVertices.length; v < vl; v += 3 ) {

						var vertex = new THREE.Vector3();
						vertex.x = srcVertices[ v ] * scale;
						vertex.y = srcVertices[ v + 1 ] * scale;
						vertex.z = srcVertices[ v + 2 ] * scale;

						dstVertices.push( vertex );

					}

				}

			}

			if ( json.morphColors !== undefined && json.morphColors.length > 0 ) {

				console.warn( 'THREE.JSONLoader: "morphColors" no longer supported. Using them as face colors.' );

				var faces = geometry.faces;
				var morphColors = json.morphColors[ 0 ].colors;

				for ( var i = 0, l = faces.length; i < l; i ++ ) {

					faces[ i ].color.fromArray( morphColors, i * 3 );

				}

			}

		}

		function parseAnimations() {

			var outputAnimations = [];

			// parse old style Bone/Hierarchy animations
			var animations = [];

			if ( json.animation !== undefined ) {

				animations.push( json.animation );

			}

			if ( json.animations !== undefined ) {

				if ( json.animations.length ) {

					animations = animations.concat( json.animations );

				} else {

					animations.push( json.animations );

				}

			}

			for ( var i = 0; i < animations.length; i ++ ) {

				var clip = THREE.AnimationClip.parseAnimation( animations[ i ], geometry.bones );
				if ( clip ) outputAnimations.push( clip );

			}

			// parse implicit morph animations
			if ( geometry.morphTargets ) {

				// TODO: Figure out what an appropraite FPS is for morph target animations -- defaulting to 10, but really it is completely arbitrary.
				var morphAnimationClips = THREE.AnimationClip.CreateClipsFromMorphTargetSequences( geometry.morphTargets, 10 );
				outputAnimations = outputAnimations.concat( morphAnimationClips );

			}

			if ( outputAnimations.length > 0 ) geometry.animations = outputAnimations;

		};

		if ( json.materials === undefined || json.materials.length === 0 ) {

			return { geometry: geometry };

		} else {

			var materials = THREE.Loader.prototype.initMaterials( json.materials, texturePath, this.crossOrigin );

			return { geometry: geometry, materials: materials };

		}

	}

};

// File:src/loaders/LoadingManager.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.LoadingManager = function ( onLoad, onProgress, onError ) {

	var scope = this;

	var isLoading = false, itemsLoaded = 0, itemsTotal = 0;

	this.onStart = undefined;
	this.onLoad = onLoad;
	this.onProgress = onProgress;
	this.onError = onError;

	this.itemStart = function ( url ) {

		itemsTotal ++;

		if ( isLoading === false ) {

			if ( scope.onStart !== undefined ) {

				scope.onStart( url, itemsLoaded, itemsTotal );

			}

		}

		isLoading = true;

	};

	this.itemEnd = function ( url ) {

		itemsLoaded ++;

		if ( scope.onProgress !== undefined ) {

			scope.onProgress( url, itemsLoaded, itemsTotal );

		}

		if ( itemsLoaded === itemsTotal ) {

			isLoading = false;

			if ( scope.onLoad !== undefined ) {

				scope.onLoad();

			}

		}

	};

	this.itemError = function ( url ) {

		if ( scope.onError !== undefined ) {

			scope.onError( url );

		}

	};

};

THREE.DefaultLoadingManager = new THREE.LoadingManager();

// File:src/loaders/BufferGeometryLoader.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.BufferGeometryLoader = function ( manager ) {

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;

};

THREE.BufferGeometryLoader.prototype = {

	constructor: THREE.BufferGeometryLoader,

	load: function ( url, onLoad, onProgress, onError ) {

		var scope = this;

		var loader = new THREE.XHRLoader( scope.manager );
		loader.load( url, function ( text ) {

			onLoad( scope.parse( JSON.parse( text ) ) );

		}, onProgress, onError );

	},

	parse: function ( json ) {

		var geometry = new THREE.BufferGeometry();

		var index = json.data.index;

		var TYPED_ARRAYS = {
			'Int8Array': Int8Array,
			'Uint8Array': Uint8Array,
			'Uint8ClampedArray': Uint8ClampedArray,
			'Int16Array': Int16Array,
			'Uint16Array': Uint16Array,
			'Int32Array': Int32Array,
			'Uint32Array': Uint32Array,
			'Float32Array': Float32Array,
			'Float64Array': Float64Array
		};

		if ( index !== undefined ) {

			var typedArray = new TYPED_ARRAYS[ index.type ]( index.array );
			geometry.setIndex( new THREE.BufferAttribute( typedArray, 1 ) );

		}

		var attributes = json.data.attributes;

		for ( var key in attributes ) {

			var attribute = attributes[ key ];
			var typedArray = new TYPED_ARRAYS[ attribute.type ]( attribute.array );

			geometry.addAttribute( key, new THREE.BufferAttribute( typedArray, attribute.itemSize ) );

		}

		var groups = json.data.groups || json.data.drawcalls || json.data.offsets;

		if ( groups !== undefined ) {

			for ( var i = 0, n = groups.length; i !== n; ++ i ) {

				var group = groups[ i ];

				geometry.addGroup( group.start, group.count, group.materialIndex );

			}

		}

		var boundingSphere = json.data.boundingSphere;

		if ( boundingSphere !== undefined ) {

			var center = new THREE.Vector3();

			if ( boundingSphere.center !== undefined ) {

				center.fromArray( boundingSphere.center );

			}

			geometry.boundingSphere = new THREE.Sphere( center, boundingSphere.radius );

		}

		return geometry;

	}

};

// File:src/loaders/MaterialLoader.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.MaterialLoader = function ( manager ) {

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
	this.textures = {};

};

THREE.MaterialLoader.prototype = {

	constructor: THREE.MaterialLoader,

	load: function ( url, onLoad, onProgress, onError ) {

		var scope = this;

		var loader = new THREE.XHRLoader( scope.manager );
		loader.load( url, function ( text ) {

			onLoad( scope.parse( JSON.parse( text ) ) );

		}, onProgress, onError );

	},

	setTextures: function ( value ) {

		this.textures = value;

	},

	getTexture: function ( name ) {

		var textures = this.textures;

		if ( textures[ name ] === undefined ) {

			console.warn( 'THREE.MaterialLoader: Undefined texture', name );

		}

		return textures[ name ];

	},

	parse: function ( json ) {

		var material = new THREE[ json.type ];

		if ( json.uuid !== undefined ) material.uuid = json.uuid;
		if ( json.name !== undefined ) material.name = json.name;
		if ( json.color !== undefined ) material.color.setHex( json.color );
		if ( json.roughness !== undefined ) material.roughness = json.roughness;
		if ( json.metalness !== undefined ) material.metalness = json.metalness;
		if ( json.emissive !== undefined ) material.emissive.setHex( json.emissive );
		if ( json.specular !== undefined ) material.specular.setHex( json.specular );
		if ( json.shininess !== undefined ) material.shininess = json.shininess;
		if ( json.uniforms !== undefined ) material.uniforms = json.uniforms;
		if ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;
		if ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;
		if ( json.vertexColors !== undefined ) material.vertexColors = json.vertexColors;
		if ( json.shading !== undefined ) material.shading = json.shading;
		if ( json.blending !== undefined ) material.blending = json.blending;
		if ( json.side !== undefined ) material.side = json.side;
		if ( json.opacity !== undefined ) material.opacity = json.opacity;
		if ( json.transparent !== undefined ) material.transparent = json.transparent;
		if ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;
		if ( json.depthTest !== undefined ) material.depthTest = json.depthTest;
		if ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;
		if ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;
		if ( json.wireframe !== undefined ) material.wireframe = json.wireframe;
		if ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;

		// for PointsMaterial
		if ( json.size !== undefined ) material.size = json.size;
		if ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;

		// maps

		if ( json.map !== undefined ) material.map = this.getTexture( json.map );

		if ( json.alphaMap !== undefined ) {

			material.alphaMap = this.getTexture( json.alphaMap );
			material.transparent = true;

		}

		if ( json.bumpMap !== undefined ) material.bumpMap = this.getTexture( json.bumpMap );
		if ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;

		if ( json.normalMap !== undefined ) material.normalMap = this.getTexture( json.normalMap );
		if ( json.normalScale !== undefined ) {

			var normalScale = json.normalScale;

			if ( Array.isArray( normalScale ) === false ) {

				// Blender exporter used to export a scalar. See #7459

				normalScale = [ normalScale, normalScale ];

			}

			material.normalScale = new THREE.Vector2().fromArray( normalScale );

		}

		if ( json.displacementMap !== undefined ) material.displacementMap = this.getTexture( json.displacementMap );
		if ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;
		if ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;

		if ( json.roughnessMap !== undefined ) material.roughnessMap = this.getTexture( json.roughnessMap );
		if ( json.metalnessMap !== undefined ) material.metalnessMap = this.getTexture( json.metalnessMap );

		if ( json.emissiveMap !== undefined ) material.emissiveMap = this.getTexture( json.emissiveMap );
		if ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;

		if ( json.specularMap !== undefined ) material.specularMap = this.getTexture( json.specularMap );

		if ( json.envMap !== undefined ) {

			material.envMap = this.getTexture( json.envMap );
			material.combine = THREE.MultiplyOperation;

		}

		if ( json.reflectivity ) material.reflectivity = json.reflectivity;

		if ( json.lightMap !== undefined ) material.lightMap = this.getTexture( json.lightMap );
		if ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;

		if ( json.aoMap !== undefined ) material.aoMap = this.getTexture( json.aoMap );
		if ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;

		// MultiMaterial

		if ( json.materials !== undefined ) {

			for ( var i = 0, l = json.materials.length; i < l; i ++ ) {

				material.materials.push( this.parse( json.materials[ i ] ) );

			}

		}

		return material;

	}

};

// File:src/loaders/ObjectLoader.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.ObjectLoader = function ( manager ) {

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
	this.texturePath = '';

};

THREE.ObjectLoader.prototype = {

	constructor: THREE.ObjectLoader,

	load: function ( url, onLoad, onProgress, onError ) {

		if ( this.texturePath === '' ) {

			this.texturePath = url.substring( 0, url.lastIndexOf( '/' ) + 1 );

		}

		var scope = this;

		var loader = new THREE.XHRLoader( scope.manager );
		loader.load( url, function ( text ) {

			scope.parse( JSON.parse( text ), onLoad );

		}, onProgress, onError );

	},

	setTexturePath: function ( value ) {

		this.texturePath = value;

	},

	setCrossOrigin: function ( value ) {

		this.crossOrigin = value;

	},

	parse: function ( json, onLoad ) {

		var geometries = this.parseGeometries( json.geometries );

		var images = this.parseImages( json.images, function () {

			if ( onLoad !== undefined ) onLoad( object );

		} );

		var textures  = this.parseTextures( json.textures, images );
		var materials = this.parseMaterials( json.materials, textures );

		var object = this.parseObject( json.object, geometries, materials );

		if ( json.animations ) {

			object.animations = this.parseAnimations( json.animations );

		}

		if ( json.images === undefined || json.images.length === 0 ) {

			if ( onLoad !== undefined ) onLoad( object );

		}

		return object;

	},

	parseGeometries: function ( json ) {

		var geometries = {};

		if ( json !== undefined ) {

			var geometryLoader = new THREE.JSONLoader();
			var bufferGeometryLoader = new THREE.BufferGeometryLoader();

			for ( var i = 0, l = json.length; i < l; i ++ ) {

				var geometry;
				var data = json[ i ];

				switch ( data.type ) {

					case 'PlaneGeometry':
					case 'PlaneBufferGeometry':

						geometry = new THREE[ data.type ](
							data.width,
							data.height,
							data.widthSegments,
							data.heightSegments
						);

						break;

					case 'BoxGeometry':
					case 'CubeGeometry': // backwards compatible

						geometry = new THREE.BoxGeometry(
							data.width,
							data.height,
							data.depth,
							data.widthSegments,
							data.heightSegments,
							data.depthSegments
						);

						break;

					case 'CircleBufferGeometry':

						geometry = new THREE.CircleBufferGeometry(
							data.radius,
							data.segments,
							data.thetaStart,
							data.thetaLength
						);

						break;

					case 'CircleGeometry':

						geometry = new THREE.CircleGeometry(
							data.radius,
							data.segments,
							data.thetaStart,
							data.thetaLength
						);

						break;

					case 'CylinderGeometry':

						geometry = new THREE.CylinderGeometry(
							data.radiusTop,
							data.radiusBottom,
							data.height,
							data.radialSegments,
							data.heightSegments,
							data.openEnded,
							data.thetaStart,
							data.thetaLength
						);

						break;

					case 'SphereGeometry':

						geometry = new THREE.SphereGeometry(
							data.radius,
							data.widthSegments,
							data.heightSegments,
							data.phiStart,
							data.phiLength,
							data.thetaStart,
							data.thetaLength
						);

						break;

					case 'SphereBufferGeometry':

						geometry = new THREE.SphereBufferGeometry(
							data.radius,
							data.widthSegments,
							data.heightSegments,
							data.phiStart,
							data.phiLength,
							data.thetaStart,
							data.thetaLength
						);

						break;

					case 'DodecahedronGeometry':

						geometry = new THREE.DodecahedronGeometry(
							data.radius,
							data.detail
						);

						break;

					case 'IcosahedronGeometry':

						geometry = new THREE.IcosahedronGeometry(
							data.radius,
							data.detail
						);

						break;

					case 'OctahedronGeometry':

						geometry = new THREE.OctahedronGeometry(
							data.radius,
							data.detail
						);

						break;

					case 'TetrahedronGeometry':

						geometry = new THREE.TetrahedronGeometry(
							data.radius,
							data.detail
						);

						break;

					case 'RingGeometry':

						geometry = new THREE.RingGeometry(
							data.innerRadius,
							data.outerRadius,
							data.thetaSegments,
							data.phiSegments,
							data.thetaStart,
							data.thetaLength
						);

						break;

					case 'TorusGeometry':

						geometry = new THREE.TorusGeometry(
							data.radius,
							data.tube,
							data.radialSegments,
							data.tubularSegments,
							data.arc
						);

						break;

					case 'TorusKnotGeometry':

						geometry = new THREE.TorusKnotGeometry(
							data.radius,
							data.tube,
							data.radialSegments,
							data.tubularSegments,
							data.p,
							data.q,
							data.heightScale
						);

						break;

					case 'LatheGeometry':

						geometry = new THREE.LatheGeometry(
							data.points,
							data.segments,
							data.phiStart,
							data.phiLength
						);

						break;

					case 'BufferGeometry':

						geometry = bufferGeometryLoader.parse( data );

						break;

					case 'Geometry':

						geometry = geometryLoader.parse( data.data, this.texturePath ).geometry;

						break;

					default:

						console.warn( 'THREE.ObjectLoader: Unsupported geometry type "' + data.type + '"' );

						continue;

				}

				geometry.uuid = data.uuid;

				if ( data.name !== undefined ) geometry.name = data.name;

				geometries[ data.uuid ] = geometry;

			}

		}

		return geometries;

	},

	parseMaterials: function ( json, textures ) {

		var materials = {};

		if ( json !== undefined ) {

			var loader = new THREE.MaterialLoader();
			loader.setTextures( textures );

			for ( var i = 0, l = json.length; i < l; i ++ ) {

				var material = loader.parse( json[ i ] );
				materials[ material.uuid ] = material;

			}

		}

		return materials;

	},

	parseAnimations: function ( json ) {

		var animations = [];

		for ( var i = 0; i < json.length; i ++ ) {

			var clip = THREE.AnimationClip.parse( json[ i ] );

			animations.push( clip );

		}

		return animations;

	},

	parseImages: function ( json, onLoad ) {

		var scope = this;
		var images = {};

		function loadImage( url ) {

			scope.manager.itemStart( url );

			return loader.load( url, function () {

				scope.manager.itemEnd( url );

			} );

		}

		if ( json !== undefined && json.length > 0 ) {

			var manager = new THREE.LoadingManager( onLoad );

			var loader = new THREE.ImageLoader( manager );
			loader.setCrossOrigin( this.crossOrigin );

			for ( var i = 0, l = json.length; i < l; i ++ ) {

				var image = json[ i ];
				var path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( image.url ) ? image.url : scope.texturePath + image.url;

				images[ image.uuid ] = loadImage( path );

			}

		}

		return images;

	},

	parseTextures: function ( json, images ) {

		function parseConstant( value ) {

			if ( typeof( value ) === 'number' ) return value;

			console.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );

			return THREE[ value ];

		}

		var textures = {};

		if ( json !== undefined ) {

			for ( var i = 0, l = json.length; i < l; i ++ ) {

				var data = json[ i ];

				if ( data.image === undefined ) {

					console.warn( 'THREE.ObjectLoader: No "image" specified for', data.uuid );

				}

				if ( images[ data.image ] === undefined ) {

					console.warn( 'THREE.ObjectLoader: Undefined image', data.image );

				}

				var texture = new THREE.Texture( images[ data.image ] );
				texture.needsUpdate = true;

				texture.uuid = data.uuid;

				if ( data.name !== undefined ) texture.name = data.name;
				if ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping );
				if ( data.offset !== undefined ) texture.offset = new THREE.Vector2( data.offset[ 0 ], data.offset[ 1 ] );
				if ( data.repeat !== undefined ) texture.repeat = new THREE.Vector2( data.repeat[ 0 ], data.repeat[ 1 ] );
				if ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter );
				if ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter );
				if ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;
				if ( Array.isArray( data.wrap ) ) {

					texture.wrapS = parseConstant( data.wrap[ 0 ] );
					texture.wrapT = parseConstant( data.wrap[ 1 ] );

				}

				textures[ data.uuid ] = texture;

			}

		}

		return textures;

	},

	parseObject: function () {

		var matrix = new THREE.Matrix4();

		return function ( data, geometries, materials ) {

			var object;

			function getGeometry( name ) {

				if ( geometries[ name ] === undefined ) {

					console.warn( 'THREE.ObjectLoader: Undefined geometry', name );

				}

				return geometries[ name ];

			}

			function getMaterial( name ) {

				if ( name === undefined ) return undefined;

				if ( materials[ name ] === undefined ) {

					console.warn( 'THREE.ObjectLoader: Undefined material', name );

				}

				return materials[ name ];

			}

			switch ( data.type ) {

				case 'Scene':

					object = new THREE.Scene();

					break;

				case 'PerspectiveCamera':

					object = new THREE.PerspectiveCamera( data.fov, data.aspect, data.near, data.far );

					break;

				case 'OrthographicCamera':

					object = new THREE.OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );

					break;

				case 'AmbientLight':

					object = new THREE.AmbientLight( data.color, data.intensity );

					break;

				case 'DirectionalLight':

					object = new THREE.DirectionalLight( data.color, data.intensity );

					break;

				case 'PointLight':

					object = new THREE.PointLight( data.color, data.intensity, data.distance, data.decay );

					break;

				case 'SpotLight':

					object = new THREE.SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );

					break;

				case 'HemisphereLight':

					object = new THREE.HemisphereLight( data.color, data.groundColor, data.intensity );

					break;

				case 'Mesh':

					var geometry = getGeometry( data.geometry );
					var material = getMaterial( data.material );

					if ( geometry.bones && geometry.bones.length > 0 ) {

						object = new THREE.SkinnedMesh( geometry, material );

					} else {

						object = new THREE.Mesh( geometry, material );

					}

					break;

				case 'LOD':

					object = new THREE.LOD();

					break;

				case 'Line':

					object = new THREE.Line( getGeometry( data.geometry ), getMaterial( data.material ), data.mode );

					break;

				case 'PointCloud':
				case 'Points':

					object = new THREE.Points( getGeometry( data.geometry ), getMaterial( data.material ) );

					break;

				case 'Sprite':

					object = new THREE.Sprite( getMaterial( data.material ) );

					break;

				case 'Group':

					object = new THREE.Group();

					break;

				default:

					object = new THREE.Object3D();

			}

			object.uuid = data.uuid;

			if ( data.name !== undefined ) object.name = data.name;
			if ( data.matrix !== undefined ) {

				matrix.fromArray( data.matrix );
				matrix.decompose( object.position, object.quaternion, object.scale );

			} else {

				if ( data.position !== undefined ) object.position.fromArray( data.position );
				if ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );
				if ( data.scale !== undefined ) object.scale.fromArray( data.scale );

			}

			if ( data.castShadow !== undefined ) object.castShadow = data.castShadow;
			if ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;

			if ( data.visible !== undefined ) object.visible = data.visible;
			if ( data.userData !== undefined ) object.userData = data.userData;

			if ( data.children !== undefined ) {

				for ( var child in data.children ) {

					object.add( this.parseObject( data.children[ child ], geometries, materials ) );

				}

			}

			if ( data.type === 'LOD' ) {

				var levels = data.levels;

				for ( var l = 0; l < levels.length; l ++ ) {

					var level = levels[ l ];
					var child = object.getObjectByProperty( 'uuid', level.object );

					if ( child !== undefined ) {

						object.addLevel( child, level.distance );

					}

				}

			}

			return object;

		}

	}()

};

// File:src/loaders/TextureLoader.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.TextureLoader = function ( manager ) {

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;

};

THREE.TextureLoader.prototype = {

	constructor: THREE.TextureLoader,

	load: function ( url, onLoad, onProgress, onError ) {

		var texture = new THREE.Texture();

		var loader = new THREE.ImageLoader( this.manager );
		loader.setCrossOrigin( this.crossOrigin );
		loader.setPath( this.path );
		loader.load( url, function ( image ) {

			texture.image = image;
			texture.needsUpdate = true;

			if ( onLoad !== undefined ) {

				onLoad( texture );

			}

		}, onProgress, onError );

		return texture;

	},

	setCrossOrigin: function ( value ) {

		this.crossOrigin = value;

	},

	setPath: function ( value ) {

		this.path = value;

	}

};

// File:src/loaders/CubeTextureLoader.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.CubeTextureLoader = function ( manager ) {

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;

};

THREE.CubeTextureLoader.prototype = {

	constructor: THREE.CubeTextureLoader,

	load: function ( urls, onLoad, onProgress, onError ) {

		var texture = new THREE.CubeTexture( [] );

		var loader = new THREE.ImageLoader( this.manager );
		loader.setCrossOrigin( this.crossOrigin );
		loader.setPath( this.path );

		var loaded = 0;

		function loadTexture( i ) {

			loader.load( urls[ i ], function ( image ) {

				texture.images[ i ] = image;

				loaded ++;

				if ( loaded === 6 ) {

					texture.needsUpdate = true;

					if ( onLoad ) onLoad( texture );

				}

			}, undefined, onError );

		}

		for ( var i = 0; i < urls.length; ++ i ) {

			loadTexture( i );

		}

		return texture;

	},

	setCrossOrigin: function ( value ) {

		this.crossOrigin = value;

	},

	setPath: function ( value ) {

		this.path = value;

	}

};

// File:src/loaders/BinaryTextureLoader.js

/**
 * @author Nikos M. / https://github.com/foo123/
 *
 * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)
 */

THREE.DataTextureLoader = THREE.BinaryTextureLoader = function ( manager ) {

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;

	// override in sub classes
	this._parser = null;

};

THREE.BinaryTextureLoader.prototype = {

	constructor: THREE.BinaryTextureLoader,

	load: function ( url, onLoad, onProgress, onError ) {

		var scope = this;

		var texture = new THREE.DataTexture();

		var loader = new THREE.XHRLoader( this.manager );
		loader.setResponseType( 'arraybuffer' );

		loader.load( url, function ( buffer ) {

			var texData = scope._parser( buffer );

			if ( ! texData ) return;

			if ( undefined !== texData.image ) {

				texture.image = texData.image;

			} else if ( undefined !== texData.data ) {

				texture.image.width = texData.width;
				texture.image.height = texData.height;
				texture.image.data = texData.data;

			}

			texture.wrapS = undefined !== texData.wrapS ? texData.wrapS : THREE.ClampToEdgeWrapping;
			texture.wrapT = undefined !== texData.wrapT ? texData.wrapT : THREE.ClampToEdgeWrapping;

			texture.magFilter = undefined !== texData.magFilter ? texData.magFilter : THREE.LinearFilter;
			texture.minFilter = undefined !== texData.minFilter ? texData.minFilter : THREE.LinearMipMapLinearFilter;

			texture.anisotropy = undefined !== texData.anisotropy ? texData.anisotropy : 1;

			if ( undefined !== texData.format ) {

				texture.format = texData.format;

			}
			if ( undefined !== texData.type ) {

				texture.type = texData.type;

			}

			if ( undefined !== texData.mipmaps ) {

				texture.mipmaps = texData.mipmaps;

			}

			if ( 1 === texData.mipmapCount ) {

				texture.minFilter = THREE.LinearFilter;

			}

			texture.needsUpdate = true;

			if ( onLoad ) onLoad( texture, texData );

		}, onProgress, onError );


		return texture;

	}

};

// File:src/loaders/CompressedTextureLoader.js

/**
 * @author mrdoob / http://mrdoob.com/
 *
 * Abstract Base class to block based textures loader (dds, pvr, ...)
 */

THREE.CompressedTextureLoader = function ( manager ) {

	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;

	// override in sub classes
	this._parser = null;

};


THREE.CompressedTextureLoader.prototype = {

	constructor: THREE.CompressedTextureLoader,

	load: function ( url, onLoad, onProgress, onError ) {

		var scope = this;

		var images = [];

		var texture = new THREE.CompressedTexture();
		texture.image = images;

		var loader = new THREE.XHRLoader( this.manager );
		loader.setPath( this.path );
		loader.setResponseType( 'arraybuffer' );

		function loadTexture( i ) {

			loader.load( url[ i ], function ( buffer ) {

				var texDatas = scope._parser( buffer, true );

				images[ i ] = {
					width: texDatas.width,
					height: texDatas.height,
					format: texDatas.format,
					mipmaps: texDatas.mipmaps
				};

				loaded += 1;

				if ( loaded === 6 ) {

					if ( texDatas.mipmapCount === 1 )
						texture.minFilter = THREE.LinearFilter;

					texture.format = texDatas.format;
					texture.needsUpdate = true;

					if ( onLoad ) onLoad( texture );

				}

			}, onProgress, onError );

		}

		if ( Array.isArray( url ) ) {

			var loaded = 0;

			for ( var i = 0, il = url.length; i < il; ++ i ) {

				loadTexture( i );

			}

		} else {

			// compressed cubemap texture stored in a single DDS file

			loader.load( url, function ( buffer ) {

				var texDatas = scope._parser( buffer, true );

				if ( texDatas.isCubemap ) {

					var faces = texDatas.mipmaps.length / texDatas.mipmapCount;

					for ( var f = 0; f < faces; f ++ ) {

						images[ f ] = { mipmaps : [] };

						for ( var i = 0; i < texDatas.mipmapCount; i ++ ) {

							images[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );
							images[ f ].format = texDatas.format;
							images[ f ].width = texDatas.width;
							images[ f ].height = texDatas.height;

						}

					}

				} else {

					texture.image.width = texDatas.width;
					texture.image.height = texDatas.height;
					texture.mipmaps = texDatas.mipmaps;

				}

				if ( texDatas.mipmapCount === 1 ) {

					texture.minFilter = THREE.LinearFilter;

				}

				texture.format = texDatas.format;
				texture.needsUpdate = true;

				if ( onLoad ) onLoad( texture );

			}, onProgress, onError );

		}

		return texture;

	},

	setPath: function ( value ) {

		this.path = value;

	}

};

// File:src/materials/Material.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Material = function () {

	Object.defineProperty( this, 'id', { value: THREE.MaterialIdCount ++ } );

	this.uuid = THREE.Math.generateUUID();

	this.name = '';
	this.type = 'Material';

	this.side = THREE.FrontSide;

	this.opacity = 1;
	this.transparent = false;

	this.blending = THREE.NormalBlending;

	this.blendSrc = THREE.SrcAlphaFactor;
	this.blendDst = THREE.OneMinusSrcAlphaFactor;
	this.blendEquation = THREE.AddEquation;
	this.blendSrcAlpha = null;
	this.blendDstAlpha = null;
	this.blendEquationAlpha = null;

	this.depthFunc = THREE.LessEqualDepth;
	this.depthTest = true;
	this.depthWrite = true;

	this.colorWrite = true;

	this.precision = null; // override the renderer's default precision for this material

	this.polygonOffset = false;
	this.polygonOffsetFactor = 0;
	this.polygonOffsetUnits = 0;

	this.alphaTest = 0;

	this.overdraw = 0; // Overdrawn pixels (typically between 0 and 1) for fixing antialiasing gaps in CanvasRenderer

	this.visible = true;

	this._needsUpdate = true;

};

THREE.Material.prototype = {

	constructor: THREE.Material,

	get needsUpdate () {

		return this._needsUpdate;

	},

	set needsUpdate ( value ) {

		if ( value === true ) this.update();

		this._needsUpdate = value;

	},

	setValues: function ( values ) {

		if ( values === undefined ) return;

		for ( var key in values ) {

			var newValue = values[ key ];

			if ( newValue === undefined ) {

				console.warn( "THREE.Material: '" + key + "' parameter is undefined." );
				continue;

			}

			var currentValue = this[ key ];

			if ( currentValue === undefined ) {

				console.warn( "THREE." + this.type + ": '" + key + "' is not a property of this material." );
				continue;

			}

			if ( currentValue instanceof THREE.Color ) {

				currentValue.set( newValue );

			} else if ( currentValue instanceof THREE.Vector3 && newValue instanceof THREE.Vector3 ) {

				currentValue.copy( newValue );

			} else if ( key === 'overdraw' ) {

				// ensure overdraw is backwards-compatible with legacy boolean type
				this[ key ] = Number( newValue );

			} else {

				this[ key ] = newValue;

			}

		}

	},

	toJSON: function ( meta ) {

		var isRoot = meta === undefined;

		if ( isRoot ) {

			meta = {
				textures: {},
				images: {}
			};

		}

		var data = {
			metadata: {
				version: 4.4,
				type: 'Material',
				generator: 'Material.toJSON'
			}
		};

		// standard Material serialization
		data.uuid = this.uuid;
		data.type = this.type;
		if ( this.name !== '' ) data.name = this.name;

		if ( this.color instanceof THREE.Color ) data.color = this.color.getHex();

		if ( this.roughness !== 0.5 ) data.roughness = this.roughness;
		if ( this.metalness !== 0.5 ) data.metalness = this.metalness;

		if ( this.emissive instanceof THREE.Color ) data.emissive = this.emissive.getHex();
		if ( this.specular instanceof THREE.Color ) data.specular = this.specular.getHex();
		if ( this.shininess !== undefined ) data.shininess = this.shininess;

		if ( this.map instanceof THREE.Texture ) data.map = this.map.toJSON( meta ).uuid;
		if ( this.alphaMap instanceof THREE.Texture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;
		if ( this.lightMap instanceof THREE.Texture ) data.lightMap = this.lightMap.toJSON( meta ).uuid;
		if ( this.bumpMap instanceof THREE.Texture ) {

			data.bumpMap = this.bumpMap.toJSON( meta ).uuid;
			data.bumpScale = this.bumpScale;

		}
		if ( this.normalMap instanceof THREE.Texture ) {

			data.normalMap = this.normalMap.toJSON( meta ).uuid;
			data.normalScale = this.normalScale.toArray();

		}
		if ( this.displacementMap instanceof THREE.Texture ) {

			data.displacementMap = this.displacementMap.toJSON( meta ).uuid;
			data.displacementScale = this.displacementScale;
			data.displacementBias = this.displacementBias;

		}
		if ( this.roughnessMap instanceof THREE.Texture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;
		if ( this.metalnessMap instanceof THREE.Texture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;

		if ( this.emissiveMap instanceof THREE.Texture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;
		if ( this.specularMap instanceof THREE.Texture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;

		if ( this.envMap instanceof THREE.Texture ) {

			data.envMap = this.envMap.toJSON( meta ).uuid;
			data.reflectivity = this.reflectivity; // Scale behind envMap

		}

		if ( this.size !== undefined ) data.size = this.size;
		if ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;

		if ( this.vertexColors !== undefined && this.vertexColors !== THREE.NoColors ) data.vertexColors = this.vertexColors;
		if ( this.shading !== undefined && this.shading !== THREE.SmoothShading ) data.shading = this.shading;
		if ( this.blending !== undefined && this.blending !== THREE.NormalBlending ) data.blending = this.blending;
		if ( this.side !== undefined && this.side !== THREE.FrontSide ) data.side = this.side;

		if ( this.opacity < 1 ) data.opacity = this.opacity;
		if ( this.transparent === true ) data.transparent = this.transparent;
		if ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;
		if ( this.wireframe === true ) data.wireframe = this.wireframe;
		if ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;

		// TODO: Copied from Object3D.toJSON

		function extractFromCache ( cache ) {

			var values = [];

			for ( var key in cache ) {

				var data = cache[ key ];
				delete data.metadata;
				values.push( data );

			}

			return values;

		}

		if ( isRoot ) {

			var textures = extractFromCache( meta.textures );
			var images = extractFromCache( meta.images );

			if ( textures.length > 0 ) data.textures = textures;
			if ( images.length > 0 ) data.images = images;

		}

		return data;

	},

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( source ) {

		this.name = source.name;

		this.side = source.side;

		this.opacity = source.opacity;
		this.transparent = source.transparent;

		this.blending = source.blending;

		this.blendSrc = source.blendSrc;
		this.blendDst = source.blendDst;
		this.blendEquation = source.blendEquation;
		this.blendSrcAlpha = source.blendSrcAlpha;
		this.blendDstAlpha = source.blendDstAlpha;
		this.blendEquationAlpha = source.blendEquationAlpha;

		this.depthFunc = source.depthFunc;
		this.depthTest = source.depthTest;
		this.depthWrite = source.depthWrite;

		this.colorWrite = source.colorWrite;

		this.precision = source.precision;

		this.polygonOffset = source.polygonOffset;
		this.polygonOffsetFactor = source.polygonOffsetFactor;
		this.polygonOffsetUnits = source.polygonOffsetUnits;

		this.alphaTest = source.alphaTest;

		this.overdraw = source.overdraw;

		this.visible = source.visible;

		return this;

	},

	update: function () {

		this.dispatchEvent( { type: 'update' } );

	},

	dispose: function () {

		this.dispatchEvent( { type: 'dispose' } );

	}

};

THREE.EventDispatcher.prototype.apply( THREE.Material.prototype );

THREE.MaterialIdCount = 0;

// File:src/materials/LineBasicMaterial.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 *
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  linewidth: <float>,
 *  linecap: "round",
 *  linejoin: "round",
 *
 *  vertexColors: <bool>
 *
 *  fog: <bool>
 * }
 */

THREE.LineBasicMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'LineBasicMaterial';

	this.color = new THREE.Color( 0xffffff );

	this.linewidth = 1;
	this.linecap = 'round';
	this.linejoin = 'round';

	this.vertexColors = THREE.NoColors;

	this.fog = true;

	this.setValues( parameters );

};

THREE.LineBasicMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.LineBasicMaterial.prototype.constructor = THREE.LineBasicMaterial;

THREE.LineBasicMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.color.copy( source.color );

	this.linewidth = source.linewidth;
	this.linecap = source.linecap;
	this.linejoin = source.linejoin;

	this.vertexColors = source.vertexColors;

	this.fog = source.fog;

	return this;

};

// File:src/materials/LineDashedMaterial.js

/**
 * @author alteredq / http://alteredqualia.com/
 *
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  linewidth: <float>,
 *
 *  scale: <float>,
 *  dashSize: <float>,
 *  gapSize: <float>,
 *
 *  vertexColors: THREE.NoColors / THREE.FaceColors / THREE.VertexColors
 *
 *  fog: <bool>
 * }
 */

THREE.LineDashedMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'LineDashedMaterial';

	this.color = new THREE.Color( 0xffffff );

	this.linewidth = 1;

	this.scale = 1;
	this.dashSize = 3;
	this.gapSize = 1;

	this.vertexColors = THREE.NoColors;

	this.fog = true;

	this.setValues( parameters );

};

THREE.LineDashedMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.LineDashedMaterial.prototype.constructor = THREE.LineDashedMaterial;

THREE.LineDashedMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.color.copy( source.color );
	
	this.linewidth = source.linewidth;

	this.scale = source.scale;
	this.dashSize = source.dashSize;
	this.gapSize = source.gapSize;

	this.vertexColors = source.vertexColors;

	this.fog = source.fog;

	return this;

};

// File:src/materials/MeshBasicMaterial.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 *
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *  map: new THREE.Texture( <Image> ),
 *
 *  aoMap: new THREE.Texture( <Image> ),
 *  aoMapIntensity: <float>
 *
 *  specularMap: new THREE.Texture( <Image> ),
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  envMap: new THREE.TextureCube( [posx, negx, posy, negy, posz, negz] ),
 *  combine: THREE.Multiply,
 *  reflectivity: <float>,
 *  refractionRatio: <float>,
 *
 *  shading: THREE.SmoothShading,
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 *
 *  vertexColors: THREE.NoColors / THREE.VertexColors / THREE.FaceColors,
 *
 *  skinning: <bool>,
 *  morphTargets: <bool>,
 *
 *  fog: <bool>
 * }
 */

THREE.MeshBasicMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'MeshBasicMaterial';

	this.color = new THREE.Color( 0xffffff ); // emissive

	this.map = null;

	this.aoMap = null;
	this.aoMapIntensity = 1.0;

	this.specularMap = null;

	this.alphaMap = null;

	this.envMap = null;
	this.combine = THREE.MultiplyOperation;
	this.reflectivity = 1;
	this.refractionRatio = 0.98;

	this.fog = true;

	this.shading = THREE.SmoothShading;

	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.wireframeLinecap = 'round';
	this.wireframeLinejoin = 'round';

	this.vertexColors = THREE.NoColors;

	this.skinning = false;
	this.morphTargets = false;

	this.setValues( parameters );

};

THREE.MeshBasicMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.MeshBasicMaterial.prototype.constructor = THREE.MeshBasicMaterial;

THREE.MeshBasicMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.color.copy( source.color );

	this.map = source.map;

	this.aoMap = source.aoMap;
	this.aoMapIntensity = source.aoMapIntensity;

	this.specularMap = source.specularMap;

	this.alphaMap = source.alphaMap;

	this.envMap = source.envMap;
	this.combine = source.combine;
	this.reflectivity = source.reflectivity;
	this.refractionRatio = source.refractionRatio;

	this.fog = source.fog;

	this.shading = source.shading;

	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.wireframeLinecap = source.wireframeLinecap;
	this.wireframeLinejoin = source.wireframeLinejoin;

	this.vertexColors = source.vertexColors;

	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;

	return this;

};

// File:src/materials/MeshLambertMaterial.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 *
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *
 *  map: new THREE.Texture( <Image> ),
 *
 *  lightMap: new THREE.Texture( <Image> ),
 *  lightMapIntensity: <float>
 *
 *  aoMap: new THREE.Texture( <Image> ),
 *  aoMapIntensity: <float>
 *
 *  emissive: <hex>,
 *  emissiveIntensity: <float>
 *  emissiveMap: new THREE.Texture( <Image> ),
 *
 *  specularMap: new THREE.Texture( <Image> ),
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  envMap: new THREE.TextureCube( [posx, negx, posy, negy, posz, negz] ),
 *  combine: THREE.Multiply,
 *  reflectivity: <float>,
 *  refractionRatio: <float>,
 *
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 *
 *  vertexColors: THREE.NoColors / THREE.VertexColors / THREE.FaceColors,
 *
 *  skinning: <bool>,
 *  morphTargets: <bool>,
 *  morphNormals: <bool>,
 *
 *	fog: <bool>
 * }
 */

THREE.MeshLambertMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'MeshLambertMaterial';

	this.color = new THREE.Color( 0xffffff ); // diffuse

	this.map = null;

	this.lightMap = null;
	this.lightMapIntensity = 1.0;

	this.aoMap = null;
	this.aoMapIntensity = 1.0;

	this.emissive = new THREE.Color( 0x000000 );
	this.emissiveIntensity = 1.0;
	this.emissiveMap = null;

	this.specularMap = null;

	this.alphaMap = null;

	this.envMap = null;
	this.combine = THREE.MultiplyOperation;
	this.reflectivity = 1;
	this.refractionRatio = 0.98;

	this.fog = true;

	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.wireframeLinecap = 'round';
	this.wireframeLinejoin = 'round';

	this.vertexColors = THREE.NoColors;

	this.skinning = false;
	this.morphTargets = false;
	this.morphNormals = false;

	this.setValues( parameters );

};

THREE.MeshLambertMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.MeshLambertMaterial.prototype.constructor = THREE.MeshLambertMaterial;

THREE.MeshLambertMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.color.copy( source.color );

	this.map = source.map;

	this.lightMap = source.lightMap;
	this.lightMapIntensity = source.lightMapIntensity;

	this.aoMap = source.aoMap;
	this.aoMapIntensity = source.aoMapIntensity;

	this.emissive.copy( source.emissive );
	this.emissiveMap = source.emissiveMap;
	this.emissiveIntensity = source.emissiveIntensity;

	this.specularMap = source.specularMap;

	this.alphaMap = source.alphaMap;

	this.envMap = source.envMap;
	this.combine = source.combine;
	this.reflectivity = source.reflectivity;
	this.refractionRatio = source.refractionRatio;

	this.fog = source.fog;

	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.wireframeLinecap = source.wireframeLinecap;
	this.wireframeLinejoin = source.wireframeLinejoin;

	this.vertexColors = source.vertexColors;

	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;

	return this;

};

// File:src/materials/MeshPhongMaterial.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 *
 * parameters = {
 *  color: <hex>,
 *  specular: <hex>,
 *  shininess: <float>,
 *  opacity: <float>,
 *
 *  map: new THREE.Texture( <Image> ),
 *
 *  lightMap: new THREE.Texture( <Image> ),
 *  lightMapIntensity: <float>
 *
 *  aoMap: new THREE.Texture( <Image> ),
 *  aoMapIntensity: <float>
 *
 *  emissive: <hex>,
 *  emissiveIntensity: <float>
 *  emissiveMap: new THREE.Texture( <Image> ),
 *
 *  bumpMap: new THREE.Texture( <Image> ),
 *  bumpScale: <float>,
 *
 *  normalMap: new THREE.Texture( <Image> ),
 *  normalScale: <Vector2>,
 *
 *  displacementMap: new THREE.Texture( <Image> ),
 *  displacementScale: <float>,
 *  displacementBias: <float>,
 *
 *  specularMap: new THREE.Texture( <Image> ),
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  envMap: new THREE.TextureCube( [posx, negx, posy, negy, posz, negz] ),
 *  combine: THREE.Multiply,
 *  reflectivity: <float>,
 *  refractionRatio: <float>,
 *
 *  shading: THREE.SmoothShading,
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 *
 *  vertexColors: THREE.NoColors / THREE.VertexColors / THREE.FaceColors,
 *
 *  skinning: <bool>,
 *  morphTargets: <bool>,
 *  morphNormals: <bool>,
 *
 *	fog: <bool>
 * }
 */

THREE.MeshPhongMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'MeshPhongMaterial';

	this.color = new THREE.Color( 0xffffff ); // diffuse
	this.specular = new THREE.Color( 0x111111 );
	this.shininess = 30;

	this.map = null;

	this.lightMap = null;
	this.lightMapIntensity = 1.0;

	this.aoMap = null;
	this.aoMapIntensity = 1.0;

	this.emissive = new THREE.Color( 0x000000 );
	this.emissiveIntensity = 1.0;
	this.emissiveMap = null;

	this.bumpMap = null;
	this.bumpScale = 1;

	this.normalMap = null;
	this.normalScale = new THREE.Vector2( 1, 1 );

	this.displacementMap = null;
	this.displacementScale = 1;
	this.displacementBias = 0;

	this.specularMap = null;

	this.alphaMap = null;

	this.envMap = null;
	this.combine = THREE.MultiplyOperation;
	this.reflectivity = 1;
	this.refractionRatio = 0.98;

	this.fog = true;

	this.shading = THREE.SmoothShading;

	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.wireframeLinecap = 'round';
	this.wireframeLinejoin = 'round';

	this.vertexColors = THREE.NoColors;

	this.skinning = false;
	this.morphTargets = false;
	this.morphNormals = false;

	this.setValues( parameters );

};

THREE.MeshPhongMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.MeshPhongMaterial.prototype.constructor = THREE.MeshPhongMaterial;

THREE.MeshPhongMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.color.copy( source.color );
	this.specular.copy( source.specular );
	this.shininess = source.shininess;

	this.map = source.map;

	this.lightMap = source.lightMap;
	this.lightMapIntensity = source.lightMapIntensity;

	this.aoMap = source.aoMap;
	this.aoMapIntensity = source.aoMapIntensity;

	this.emissive.copy( source.emissive );
	this.emissiveMap = source.emissiveMap;
	this.emissiveIntensity = source.emissiveIntensity;

	this.bumpMap = source.bumpMap;
	this.bumpScale = source.bumpScale;

	this.normalMap = source.normalMap;
	this.normalScale.copy( source.normalScale );

	this.displacementMap = source.displacementMap;
	this.displacementScale = source.displacementScale;
	this.displacementBias = source.displacementBias;

	this.specularMap = source.specularMap;

	this.alphaMap = source.alphaMap;

	this.envMap = source.envMap;
	this.combine = source.combine;
	this.reflectivity = source.reflectivity;
	this.refractionRatio = source.refractionRatio;

	this.fog = source.fog;

	this.shading = source.shading;

	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.wireframeLinecap = source.wireframeLinecap;
	this.wireframeLinejoin = source.wireframeLinejoin;

	this.vertexColors = source.vertexColors;

	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;

	return this;

};

// File:src/materials/MeshStandardMaterial.js

/**
 * @author WestLangley / http://github.com/WestLangley
 *
 * parameters = {
 *  color: <hex>,
 *  roughness: <float>,
 *  metalness: <float>,
 *  opacity: <float>,
 *
 *  map: new THREE.Texture( <Image> ),
 *
 *  lightMap: new THREE.Texture( <Image> ),
 *  lightMapIntensity: <float>
 *
 *  aoMap: new THREE.Texture( <Image> ),
 *  aoMapIntensity: <float>
 *
 *  emissive: <hex>,
 *  emissiveIntensity: <float>
 *  emissiveMap: new THREE.Texture( <Image> ),
 *
 *  bumpMap: new THREE.Texture( <Image> ),
 *  bumpScale: <float>,
 *
 *  normalMap: new THREE.Texture( <Image> ),
 *  normalScale: <Vector2>,
 *
 *  displacementMap: new THREE.Texture( <Image> ),
 *  displacementScale: <float>,
 *  displacementBias: <float>,
 *
 *  roughnessMap: new THREE.Texture( <Image> ),
 *
 *  metalnessMap: new THREE.Texture( <Image> ),
 *
 *  alphaMap: new THREE.Texture( <Image> ),
 *
 *  envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
 *  envMapIntensity: <float>
 *
 *  refractionRatio: <float>,
 *
 *  shading: THREE.SmoothShading,
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 *
 *  vertexColors: THREE.NoColors / THREE.VertexColors / THREE.FaceColors,
 *
 *  skinning: <bool>,
 *  morphTargets: <bool>,
 *  morphNormals: <bool>,
 *
 *	fog: <bool>
 * }
 */

THREE.MeshStandardMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'MeshStandardMaterial';

	this.color = new THREE.Color( 0xffffff ); // diffuse
	this.roughness = 0.5;
	this.metalness = 0.5;

	this.map = null;

	this.lightMap = null;
	this.lightMapIntensity = 1.0;

	this.aoMap = null;
	this.aoMapIntensity = 1.0;

	this.emissive = new THREE.Color( 0x000000 );
	this.emissiveIntensity = 1.0;
	this.emissiveMap = null;

	this.bumpMap = null;
	this.bumpScale = 1;

	this.normalMap = null;
	this.normalScale = new THREE.Vector2( 1, 1 );

	this.displacementMap = null;
	this.displacementScale = 1;
	this.displacementBias = 0;

	this.roughnessMap = null;

	this.metalnessMap = null;

	this.alphaMap = null;

	this.envMap = null;
	this.envMapIntensity = 1.0;

	this.refractionRatio = 0.98;

	this.fog = true;

	this.shading = THREE.SmoothShading;

	this.wireframe = false;
	this.wireframeLinewidth = 1;
	this.wireframeLinecap = 'round';
	this.wireframeLinejoin = 'round';

	this.vertexColors = THREE.NoColors;

	this.skinning = false;
	this.morphTargets = false;
	this.morphNormals = false;

	this.setValues( parameters );

};

THREE.MeshStandardMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.MeshStandardMaterial.prototype.constructor = THREE.MeshStandardMaterial;

THREE.MeshStandardMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.color.copy( source.color );
	this.roughness = source.roughness;
	this.metalness = source.metalness;

	this.map = source.map;

	this.lightMap = source.lightMap;
	this.lightMapIntensity = source.lightMapIntensity;

	this.aoMap = source.aoMap;
	this.aoMapIntensity = source.aoMapIntensity;

	this.emissive.copy( source.emissive );
	this.emissiveMap = source.emissiveMap;
	this.emissiveIntensity = source.emissiveIntensity;

	this.bumpMap = source.bumpMap;
	this.bumpScale = source.bumpScale;

	this.normalMap = source.normalMap;
	this.normalScale.copy( source.normalScale );

	this.displacementMap = source.displacementMap;
	this.displacementScale = source.displacementScale;
	this.displacementBias = source.displacementBias;

	this.roughnessMap = source.roughnessMap;

	this.metalnessMap = source.metalnessMap;

	this.alphaMap = source.alphaMap;

	this.envMap = source.envMap;
	this.envMapIntensity = source.envMapIntensity;

	this.refractionRatio = source.refractionRatio;

	this.fog = source.fog;

	this.shading = source.shading;

	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;
	this.wireframeLinecap = source.wireframeLinecap;
	this.wireframeLinejoin = source.wireframeLinejoin;

	this.vertexColors = source.vertexColors;

	this.skinning = source.skinning;
	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;

	return this;

};

// File:src/materials/MeshDepthMaterial.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 *
 * parameters = {
 *  opacity: <float>,
 *
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>
 * }
 */

THREE.MeshDepthMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'MeshDepthMaterial';

	this.morphTargets = false;
	this.wireframe = false;
	this.wireframeLinewidth = 1;

	this.setValues( parameters );

};

THREE.MeshDepthMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.MeshDepthMaterial.prototype.constructor = THREE.MeshDepthMaterial;

THREE.MeshDepthMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;

	return this;

};

// File:src/materials/MeshNormalMaterial.js

/**
 * @author mrdoob / http://mrdoob.com/
 *
 * parameters = {
 *  opacity: <float>,
 *
 *  shading: THREE.FlatShading,
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>
 * }
 */

THREE.MeshNormalMaterial = function ( parameters ) {

	THREE.Material.call( this, parameters );

	this.type = 'MeshNormalMaterial';

	this.wireframe = false;
	this.wireframeLinewidth = 1;

	this.morphTargets = false;

	this.setValues( parameters );

};

THREE.MeshNormalMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.MeshNormalMaterial.prototype.constructor = THREE.MeshNormalMaterial;

THREE.MeshNormalMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;

	return this;

};

// File:src/materials/MultiMaterial.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.MultiMaterial = function ( materials ) {

	this.uuid = THREE.Math.generateUUID();

	this.type = 'MultiMaterial';

	this.materials = materials instanceof Array ? materials : [];

	this.visible = true;

};

THREE.MultiMaterial.prototype = {

	constructor: THREE.MultiMaterial,

	toJSON: function ( meta ) {

		var output = {
			metadata: {
				version: 4.2,
				type: 'material',
				generator: 'MaterialExporter'
			},
			uuid: this.uuid,
			type: this.type,
			materials: []
		};

		var materials = this.materials;

		for ( var i = 0, l = materials.length; i < l; i ++ ) {

			var material = materials[ i ].toJSON( meta );
			delete material.metadata;

			output.materials.push( material );

		}

		output.visible = this.visible;

		return output;

	},

	clone: function () {

		var material = new this.constructor();

		for ( var i = 0; i < this.materials.length; i ++ ) {

			material.materials.push( this.materials[ i ].clone() );

		}

		material.visible = this.visible;

		return material;

	}

};

// File:src/materials/PointsMaterial.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 *
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *  map: new THREE.Texture( <Image> ),
 *
 *  size: <float>,
 *  sizeAttenuation: <bool>,
 *
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  vertexColors: <bool>,
 *
 *  fog: <bool>
 * }
 */

THREE.PointsMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'PointsMaterial';

	this.color = new THREE.Color( 0xffffff );

	this.map = null;

	this.size = 1;
	this.sizeAttenuation = true;

	this.vertexColors = THREE.NoColors;

	this.fog = true;

	this.setValues( parameters );

};

THREE.PointsMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.PointsMaterial.prototype.constructor = THREE.PointsMaterial;

THREE.PointsMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.color.copy( source.color );

	this.map = source.map;

	this.size = source.size;
	this.sizeAttenuation = source.sizeAttenuation;

	this.vertexColors = source.vertexColors;

	this.fog = source.fog;

	return this;

};

// File:src/materials/ShaderMaterial.js

/**
 * @author alteredq / http://alteredqualia.com/
 *
 * parameters = {
 *  defines: { "label" : "value" },
 *  uniforms: { "parameter1": { type: "f", value: 1.0 }, "parameter2": { type: "i" value2: 2 } },
 *
 *  fragmentShader: <string>,
 *  vertexShader: <string>,
 *
 *  shading: THREE.SmoothShading,
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *  wireframe: <boolean>,
 *  wireframeLinewidth: <float>,
 *
 *  lights: <bool>,
 *
 *  vertexColors: THREE.NoColors / THREE.VertexColors / THREE.FaceColors,
 *
 *  skinning: <bool>,
 *  morphTargets: <bool>,
 *  morphNormals: <bool>,
 *
 *	fog: <bool>
 * }
 */

THREE.ShaderMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'ShaderMaterial';

	this.defines = {};
	this.uniforms = {};

	this.vertexShader = 'void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}';
	this.fragmentShader = 'void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}';

	this.shading = THREE.SmoothShading;

	this.linewidth = 1;

	this.wireframe = false;
	this.wireframeLinewidth = 1;

	this.fog = false; // set to use scene fog

	this.lights = false; // set to use scene lights

	this.vertexColors = THREE.NoColors; // set to use "color" attribute stream

	this.skinning = false; // set to use skinning attribute streams

	this.morphTargets = false; // set to use morph targets
	this.morphNormals = false; // set to use morph normals

	this.extensions = {
		derivatives: false, // set to use derivatives
		fragDepth: false, // set to use fragment depth values
		drawBuffers: false, // set to use draw buffers
		shaderTextureLOD: false // set to use shader texture LOD
	};

	// When rendered geometry doesn't include these attributes but the material does,
	// use these default values in WebGL. This avoids errors when buffer data is missing.
	this.defaultAttributeValues = {
		'color': [ 1, 1, 1 ],
		'uv': [ 0, 0 ],
		'uv2': [ 0, 0 ]
	};

	this.index0AttributeName = undefined;

	if ( parameters !== undefined ) {

		if ( parameters.attributes !== undefined ) {

			console.error( 'THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.' );

		}

		this.setValues( parameters );

	}

};

THREE.ShaderMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.ShaderMaterial.prototype.constructor = THREE.ShaderMaterial;

THREE.ShaderMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.fragmentShader = source.fragmentShader;
	this.vertexShader = source.vertexShader;

	this.uniforms = THREE.UniformsUtils.clone( source.uniforms );

	this.defines = source.defines;

	this.shading = source.shading;

	this.wireframe = source.wireframe;
	this.wireframeLinewidth = source.wireframeLinewidth;

	this.fog = source.fog;

	this.lights = source.lights;

	this.vertexColors = source.vertexColors;

	this.skinning = source.skinning;

	this.morphTargets = source.morphTargets;
	this.morphNormals = source.morphNormals;

	this.extensions = source.extensions;

	return this;

};

THREE.ShaderMaterial.prototype.toJSON = function ( meta ) {

	var data = THREE.Material.prototype.toJSON.call( this, meta );

	data.uniforms = this.uniforms;
	data.vertexShader = this.vertexShader;
	data.fragmentShader = this.fragmentShader;

	return data;

};

// File:src/materials/RawShaderMaterial.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.RawShaderMaterial = function ( parameters ) {

	THREE.ShaderMaterial.call( this, parameters );

	this.type = 'RawShaderMaterial';

};

THREE.RawShaderMaterial.prototype = Object.create( THREE.ShaderMaterial.prototype );
THREE.RawShaderMaterial.prototype.constructor = THREE.RawShaderMaterial;

// File:src/materials/SpriteMaterial.js

/**
 * @author alteredq / http://alteredqualia.com/
 *
 * parameters = {
 *  color: <hex>,
 *  opacity: <float>,
 *  map: new THREE.Texture( <Image> ),
 *
 *  blending: THREE.NormalBlending,
 *  depthTest: <bool>,
 *  depthWrite: <bool>,
 *
 *	uvOffset: new THREE.Vector2(),
 *	uvScale: new THREE.Vector2(),
 *
 *  fog: <bool>
 * }
 */

THREE.SpriteMaterial = function ( parameters ) {

	THREE.Material.call( this );

	this.type = 'SpriteMaterial';

	this.color = new THREE.Color( 0xffffff );
	this.map = null;

	this.rotation = 0;

	this.fog = false;

	// set parameters

	this.setValues( parameters );

};

THREE.SpriteMaterial.prototype = Object.create( THREE.Material.prototype );
THREE.SpriteMaterial.prototype.constructor = THREE.SpriteMaterial;

THREE.SpriteMaterial.prototype.copy = function ( source ) {

	THREE.Material.prototype.copy.call( this, source );

	this.color.copy( source.color );
	this.map = source.map;

	this.rotation = source.rotation;

	this.fog = source.fog;

	return this;

};

// File:src/textures/Texture.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 * @author szimek / https://github.com/szimek/
 */

THREE.Texture = function ( image, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

	Object.defineProperty( this, 'id', { value: THREE.TextureIdCount ++ } );

	this.uuid = THREE.Math.generateUUID();

	this.name = '';
	this.sourceFile = '';

	this.image = image !== undefined ? image : THREE.Texture.DEFAULT_IMAGE;
	this.mipmaps = [];

	this.mapping = mapping !== undefined ? mapping : THREE.Texture.DEFAULT_MAPPING;

	this.wrapS = wrapS !== undefined ? wrapS : THREE.ClampToEdgeWrapping;
	this.wrapT = wrapT !== undefined ? wrapT : THREE.ClampToEdgeWrapping;

	this.magFilter = magFilter !== undefined ? magFilter : THREE.LinearFilter;
	this.minFilter = minFilter !== undefined ? minFilter : THREE.LinearMipMapLinearFilter;

	this.anisotropy = anisotropy !== undefined ? anisotropy : 1;

	this.format = format !== undefined ? format : THREE.RGBAFormat;
	this.type = type !== undefined ? type : THREE.UnsignedByteType;

	this.offset = new THREE.Vector2( 0, 0 );
	this.repeat = new THREE.Vector2( 1, 1 );

	this.generateMipmaps = true;
	this.premultiplyAlpha = false;
	this.flipY = true;
	this.unpackAlignment = 4; // valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)

	this.version = 0;
	this.onUpdate = null;

};

THREE.Texture.DEFAULT_IMAGE = undefined;
THREE.Texture.DEFAULT_MAPPING = THREE.UVMapping;

THREE.Texture.prototype = {

	constructor: THREE.Texture,

	set needsUpdate ( value ) {

		if ( value === true ) this.version ++;

	},

	clone: function () {

		return new this.constructor().copy( this );

	},

	copy: function ( source ) {

		this.image = source.image;
		this.mipmaps = source.mipmaps.slice( 0 );

		this.mapping = source.mapping;

		this.wrapS = source.wrapS;
		this.wrapT = source.wrapT;

		this.magFilter = source.magFilter;
		this.minFilter = source.minFilter;

		this.anisotropy = source.anisotropy;

		this.format = source.format;
		this.type = source.type;

		this.offset.copy( source.offset );
		this.repeat.copy( source.repeat );

		this.generateMipmaps = source.generateMipmaps;
		this.premultiplyAlpha = source.premultiplyAlpha;
		this.flipY = source.flipY;
		this.unpackAlignment = source.unpackAlignment;

		return this;

	},

	toJSON: function ( meta ) {

		if ( meta.textures[ this.uuid ] !== undefined ) {

			return meta.textures[ this.uuid ];

		}

		function getDataURL( image ) {

			var canvas;

			if ( image.toDataURL !== undefined ) {

				canvas = image;

			} else {

				canvas = document.createElement( 'canvas' );
				canvas.width = image.width;
				canvas.height = image.height;

				canvas.getContext( '2d' ).drawImage( image, 0, 0, image.width, image.height );

			}

			if ( canvas.width > 2048 || canvas.height > 2048 ) {

				return canvas.toDataURL( 'image/jpeg', 0.6 );

			} else {

				return canvas.toDataURL( 'image/png' );

			}

		}

		var output = {
			metadata: {
				version: 4.4,
				type: 'Texture',
				generator: 'Texture.toJSON'
			},

			uuid: this.uuid,
			name: this.name,

			mapping: this.mapping,

			repeat: [ this.repeat.x, this.repeat.y ],
			offset: [ this.offset.x, this.offset.y ],
			wrap: [ this.wrapS, this.wrapT ],

			minFilter: this.minFilter,
			magFilter: this.magFilter,
			anisotropy: this.anisotropy
		};

		if ( this.image !== undefined ) {

			// TODO: Move to THREE.Image

			var image = this.image;

			if ( image.uuid === undefined ) {

				image.uuid = THREE.Math.generateUUID(); // UGH

			}

			if ( meta.images[ image.uuid ] === undefined ) {

				meta.images[ image.uuid ] = {
					uuid: image.uuid,
					url: getDataURL( image )
				};

			}

			output.image = image.uuid;

		}

		meta.textures[ this.uuid ] = output;

		return output;

	},

	dispose: function () {

		this.dispatchEvent( { type: 'dispose' } );

	},

	transformUv: function ( uv ) {

		if ( this.mapping !== THREE.UVMapping )  return;

		uv.multiply( this.repeat );
		uv.add( this.offset );

		if ( uv.x < 0 || uv.x > 1 ) {

			switch ( this.wrapS ) {

				case THREE.RepeatWrapping:

					uv.x = uv.x - Math.floor( uv.x );
					break;

				case THREE.ClampToEdgeWrapping:

					uv.x = uv.x < 0 ? 0 : 1;
					break;

				case THREE.MirroredRepeatWrapping:

					if ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {

						uv.x = Math.ceil( uv.x ) - uv.x;

					} else {

						uv.x = uv.x - Math.floor( uv.x );

					}
					break;

			}

		}

		if ( uv.y < 0 || uv.y > 1 ) {

			switch ( this.wrapT ) {

				case THREE.RepeatWrapping:

					uv.y = uv.y - Math.floor( uv.y );
					break;

				case THREE.ClampToEdgeWrapping:

					uv.y = uv.y < 0 ? 0 : 1;
					break;

				case THREE.MirroredRepeatWrapping:

					if ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {

						uv.y = Math.ceil( uv.y ) - uv.y;

					} else {

						uv.y = uv.y - Math.floor( uv.y );

					}
					break;

			}

		}

		if ( this.flipY ) {

			uv.y = 1 - uv.y;

		}

	}

};

THREE.EventDispatcher.prototype.apply( THREE.Texture.prototype );

THREE.TextureIdCount = 0;

// File:src/textures/CanvasTexture.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.CanvasTexture = function ( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

	THREE.Texture.call( this, canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

	this.needsUpdate = true;

};

THREE.CanvasTexture.prototype = Object.create( THREE.Texture.prototype );
THREE.CanvasTexture.prototype.constructor = THREE.CanvasTexture;

// File:src/textures/CubeTexture.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.CubeTexture = function ( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

	mapping = mapping !== undefined ? mapping : THREE.CubeReflectionMapping;

	THREE.Texture.call( this, images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

	this.images = images;
	this.flipY = false;

};

THREE.CubeTexture.prototype = Object.create( THREE.Texture.prototype );
THREE.CubeTexture.prototype.constructor = THREE.CubeTexture;

THREE.CubeTexture.prototype.copy = function ( source ) {

	THREE.Texture.prototype.copy.call( this, source );

	this.images = source.images;

	return this;

};

// File:src/textures/CompressedTexture.js

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.CompressedTexture = function ( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy ) {

	THREE.Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

	this.image = { width: width, height: height };
	this.mipmaps = mipmaps;

	// no flipping for cube textures
	// (also flipping doesn't work for compressed textures )

	this.flipY = false;

	// can't generate mipmaps for compressed textures
	// mips must be embedded in DDS files

	this.generateMipmaps = false;

};

THREE.CompressedTexture.prototype = Object.create( THREE.Texture.prototype );
THREE.CompressedTexture.prototype.constructor = THREE.CompressedTexture;

// File:src/textures/DataTexture.js

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.DataTexture = function ( data, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy ) {

	THREE.Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

	this.image = { data: data, width: width, height: height };

	this.magFilter = magFilter !== undefined ? magFilter : THREE.NearestFilter;
	this.minFilter = minFilter !== undefined ? minFilter : THREE.NearestFilter;
	
	this.flipY = false;
	this.generateMipmaps  = false;

};

THREE.DataTexture.prototype = Object.create( THREE.Texture.prototype );
THREE.DataTexture.prototype.constructor = THREE.DataTexture;

// File:src/textures/VideoTexture.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.VideoTexture = function ( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {

	THREE.Texture.call( this, video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );

	this.generateMipmaps = false;

	var scope = this;

	function update() {

		requestAnimationFrame( update );

		if ( video.readyState === video.HAVE_ENOUGH_DATA ) {

			scope.needsUpdate = true;

		}

	}

	update();

};

THREE.VideoTexture.prototype = Object.create( THREE.Texture.prototype );
THREE.VideoTexture.prototype.constructor = THREE.VideoTexture;

// File:src/objects/Group.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Group = function () {

	THREE.Object3D.call( this );

	this.type = 'Group';

};

THREE.Group.prototype = Object.create( THREE.Object3D.prototype );
THREE.Group.prototype.constructor = THREE.Group;

// File:src/objects/Points.js

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Points = function ( geometry, material ) {

	THREE.Object3D.call( this );

	this.type = 'Points';

	this.geometry = geometry !== undefined ? geometry : new THREE.Geometry();
	this.material = material !== undefined ? material : new THREE.PointsMaterial( { color: Math.random() * 0xffffff } );

};

THREE.Points.prototype = Object.create( THREE.Object3D.prototype );
THREE.Points.prototype.constructor = THREE.Points;

THREE.Points.prototype.raycast = ( function () {

	var inverseMatrix = new THREE.Matrix4();
	var ray = new THREE.Ray();
	var sphere = new THREE.Sphere();

	return function raycast( raycaster, intersects ) {

		var object = this;
		var geometry = this.geometry;
		var matrixWorld = this.matrixWorld;
		var threshold = raycaster.params.Points.threshold;

		// Checking boundingSphere distance to ray

		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

		sphere.copy( geometry.boundingSphere );
		sphere.applyMatrix4( matrixWorld );

		if ( raycaster.ray.intersectsSphere( sphere ) === false ) return;

		//

		inverseMatrix.getInverse( matrixWorld );
		ray.copy( raycaster.ray ).applyMatrix4( inverseMatrix );

		var localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
		var localThresholdSq = localThreshold * localThreshold;
		var position = new THREE.Vector3();

		function testPoint( point, index ) {

			var rayPointDistanceSq = ray.distanceSqToPoint( point );

			if ( rayPointDistanceSq < localThresholdSq ) {

				var intersectPoint = ray.closestPointToPoint( point );
				intersectPoint.applyMatrix4( matrixWorld );

				var distance = raycaster.ray.origin.distanceTo( intersectPoint );

				if ( distance < raycaster.near || distance > raycaster.far ) return;

				intersects.push( {

					distance: distance,
					distanceToRay: Math.sqrt( rayPointDistanceSq ),
					point: intersectPoint.clone(),
					index: index,
					face: null,
					object: object

				} );

			}

		}

		if ( geometry instanceof THREE.BufferGeometry ) {

			var index = geometry.index;
			var attributes = geometry.attributes;
			var positions = attributes.position.array;

			if ( index !== null ) {

				var indices = index.array;

				for ( var i = 0, il = indices.length; i < il; i ++ ) {

					var a = indices[ i ];

					position.fromArray( positions, a * 3 );

					testPoint( position, a );

				}

			} else {

				for ( var i = 0, l = positions.length / 3; i < l; i ++ ) {

					position.fromArray( positions, i * 3 );

					testPoint( position, i );

				}

			}

		} else {

			var vertices = geometry.vertices;

			for ( var i = 0, l = vertices.length; i < l; i ++ ) {

				testPoint( vertices[ i ], i );

			}

		}

	};

}() );

THREE.Points.prototype.clone = function () {

	return new this.constructor( this.geometry, this.material ).copy( this );

};

// File:src/objects/Line.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Line = function ( geometry, material, mode ) {

	if ( mode === 1 ) {

		console.warn( 'THREE.Line: parameter THREE.LinePieces no longer supported. Created THREE.LineSegments instead.' );
		return new THREE.LineSegments( geometry, material );

	}

	THREE.Object3D.call( this );

	this.type = 'Line';

	this.geometry = geometry !== undefined ? geometry : new THREE.Geometry();
	this.material = material !== undefined ? material : new THREE.LineBasicMaterial( { color: Math.random() * 0xffffff } );

};

THREE.Line.prototype = Object.create( THREE.Object3D.prototype );
THREE.Line.prototype.constructor = THREE.Line;

THREE.Line.prototype.raycast = ( function () {

	var inverseMatrix = new THREE.Matrix4();
	var ray = new THREE.Ray();
	var sphere = new THREE.Sphere();

	return function raycast( raycaster, intersects ) {

		var precision = raycaster.linePrecision;
		var precisionSq = precision * precision;

		var geometry = this.geometry;
		var matrixWorld = this.matrixWorld;

		// Checking boundingSphere distance to ray

		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

		sphere.copy( geometry.boundingSphere );
		sphere.applyMatrix4( matrixWorld );

		if ( raycaster.ray.intersectsSphere( sphere ) === false ) return;

		//

		inverseMatrix.getInverse( matrixWorld );
		ray.copy( raycaster.ray ).applyMatrix4( inverseMatrix );

		var vStart = new THREE.Vector3();
		var vEnd = new THREE.Vector3();
		var interSegment = new THREE.Vector3();
		var interRay = new THREE.Vector3();
		var step = this instanceof THREE.LineSegments ? 2 : 1;

		if ( geometry instanceof THREE.BufferGeometry ) {

			var index = geometry.index;
			var attributes = geometry.attributes;
			var positions = attributes.position.array;

			if ( index !== null ) {

				var indices = index.array;

				for ( var i = 0, l = indices.length - 1; i < l; i += step ) {

					var a = indices[ i ];
					var b = indices[ i + 1 ];

					vStart.fromArray( positions, a * 3 );
					vEnd.fromArray( positions, b * 3 );

					var distSq = ray.distanceSqToSegment( vStart, vEnd, interRay, interSegment );

					if ( distSq > precisionSq ) continue;

					interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation

					var distance = raycaster.ray.origin.distanceTo( interRay );

					if ( distance < raycaster.near || distance > raycaster.far ) continue;

					intersects.push( {

						distance: distance,
						// What do we want? intersection point on the ray or on the segment??
						// point: raycaster.ray.at( distance ),
						point: interSegment.clone().applyMatrix4( this.matrixWorld ),
						index: i,
						face: null,
						faceIndex: null,
						object: this

					} );

				}

			} else {

				for ( var i = 0, l = positions.length / 3 - 1; i < l; i += step ) {

					vStart.fromArray( positions, 3 * i );
					vEnd.fromArray( positions, 3 * i + 3 );

					var distSq = ray.distanceSqToSegment( vStart, vEnd, interRay, interSegment );

					if ( distSq > precisionSq ) continue;

					interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation

					var distance = raycaster.ray.origin.distanceTo( interRay );

					if ( distance < raycaster.near || distance > raycaster.far ) continue;

					intersects.push( {

						distance: distance,
						// What do we want? intersection point on the ray or on the segment??
						// point: raycaster.ray.at( distance ),
						point: interSegment.clone().applyMatrix4( this.matrixWorld ),
						index: i,
						face: null,
						faceIndex: null,
						object: this

					} );

				}

			}

		} else if ( geometry instanceof THREE.Geometry ) {

			var vertices = geometry.vertices;
			var nbVertices = vertices.length;

			for ( var i = 0; i < nbVertices - 1; i += step ) {

				var distSq = ray.distanceSqToSegment( vertices[ i ], vertices[ i + 1 ], interRay, interSegment );

				if ( distSq > precisionSq ) continue;

				interRay.applyMatrix4( this.matrixWorld ); //Move back to world space for distance calculation

				var distance = raycaster.ray.origin.distanceTo( interRay );

				if ( distance < raycaster.near || distance > raycaster.far ) continue;

				intersects.push( {

					distance: distance,
					// What do we want? intersection point on the ray or on the segment??
					// point: raycaster.ray.at( distance ),
					point: interSegment.clone().applyMatrix4( this.matrixWorld ),
					index: i,
					face: null,
					faceIndex: null,
					object: this

				} );

			}

		}

	};

}() );

THREE.Line.prototype.clone = function () {

	return new this.constructor( this.geometry, this.material ).copy( this );

};

// DEPRECATED

THREE.LineStrip = 0;
THREE.LinePieces = 1;

// File:src/objects/LineSegments.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.LineSegments = function ( geometry, material ) {

	THREE.Line.call( this, geometry, material );

	this.type = 'LineSegments';

};

THREE.LineSegments.prototype = Object.create( THREE.Line.prototype );
THREE.LineSegments.prototype.constructor = THREE.LineSegments;

// File:src/objects/Mesh.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 * @author mikael emtinger / http://gomo.se/
 * @author jonobr1 / http://jonobr1.com/
 */

THREE.Mesh = function ( geometry, material ) {

	THREE.Object3D.call( this );

	this.type = 'Mesh';

	this.geometry = geometry !== undefined ? geometry : new THREE.Geometry();
	this.material = material !== undefined ? material : new THREE.MeshBasicMaterial( { color: Math.random() * 0xffffff } );

	this.drawMode = THREE.TrianglesDrawMode;

	this.updateMorphTargets();

};

THREE.Mesh.prototype = Object.create( THREE.Object3D.prototype );
THREE.Mesh.prototype.constructor = THREE.Mesh;

THREE.Mesh.prototype.setDrawMode = function ( value ) {

	this.drawMode = value;

};

THREE.Mesh.prototype.updateMorphTargets = function () {

	if ( this.geometry.morphTargets !== undefined && this.geometry.morphTargets.length > 0 ) {

		this.morphTargetBase = - 1;
		this.morphTargetInfluences = [];
		this.morphTargetDictionary = {};

		for ( var m = 0, ml = this.geometry.morphTargets.length; m < ml; m ++ ) {

			this.morphTargetInfluences.push( 0 );
			this.morphTargetDictionary[ this.geometry.morphTargets[ m ].name ] = m;

		}

	}

};

THREE.Mesh.prototype.getMorphTargetIndexByName = function ( name ) {

	if ( this.morphTargetDictionary[ name ] !== undefined ) {

		return this.morphTargetDictionary[ name ];

	}

	console.warn( 'THREE.Mesh.getMorphTargetIndexByName: morph target ' + name + ' does not exist. Returning 0.' );

	return 0;

};


THREE.Mesh.prototype.raycast = ( function () {

	var inverseMatrix = new THREE.Matrix4();
	var ray = new THREE.Ray();
	var sphere = new THREE.Sphere();

	var vA = new THREE.Vector3();
	var vB = new THREE.Vector3();
	var vC = new THREE.Vector3();

	var tempA = new THREE.Vector3();
	var tempB = new THREE.Vector3();
	var tempC = new THREE.Vector3();

	var uvA = new THREE.Vector2();
	var uvB = new THREE.Vector2();
	var uvC = new THREE.Vector2();

	var barycoord = new THREE.Vector3();

	var intersectionPoint = new THREE.Vector3();
	var intersectionPointWorld = new THREE.Vector3();

	function uvIntersection( point, p1, p2, p3, uv1, uv2, uv3 ) {

		THREE.Triangle.barycoordFromPoint( point, p1, p2, p3, barycoord );

		uv1.multiplyScalar( barycoord.x );
		uv2.multiplyScalar( barycoord.y );
		uv3.multiplyScalar( barycoord.z );

		uv1.add( uv2 ).add( uv3 );

		return uv1.clone();

	}

	function checkIntersection( object, raycaster, ray, pA, pB, pC, point ) {

		var intersect;
		var material = object.material;

		if ( material.side === THREE.BackSide ) {

			intersect = ray.intersectTriangle( pC, pB, pA, true, point );

		} else {

			intersect = ray.intersectTriangle( pA, pB, pC, material.side !== THREE.DoubleSide, point );

		}

		if ( intersect === null ) return null;

		intersectionPointWorld.copy( point );
		intersectionPointWorld.applyMatrix4( object.matrixWorld );

		var distance = raycaster.ray.origin.distanceTo( intersectionPointWorld );

		if ( distance < raycaster.near || distance > raycaster.far ) return null;

		return {
			distance: distance,
			point: intersectionPointWorld.clone(),
			object: object
		};

	}

	function checkBufferGeometryIntersection( object, raycaster, ray, positions, uvs, a, b, c ) {

		vA.fromArray( positions, a * 3 );
		vB.fromArray( positions, b * 3 );
		vC.fromArray( positions, c * 3 );

		var intersection = checkIntersection( object, raycaster, ray, vA, vB, vC, intersectionPoint );

		if ( intersection ) {

			if ( uvs ) {

				uvA.fromArray( uvs, a * 2 );
				uvB.fromArray( uvs, b * 2 );
				uvC.fromArray( uvs, c * 2 );

				intersection.uv = uvIntersection( intersectionPoint,  vA, vB, vC,  uvA, uvB, uvC );

			}

			intersection.face = new THREE.Face3( a, b, c, THREE.Triangle.normal( vA, vB, vC ) );
			intersection.faceIndex = a;

		}

		return intersection;

	}

	return function raycast( raycaster, intersects ) {

		var geometry = this.geometry;
		var material = this.material;
		var matrixWorld = this.matrixWorld;

		if ( material === undefined ) return;

		// Checking boundingSphere distance to ray

		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();

		sphere.copy( geometry.boundingSphere );
		sphere.applyMatrix4( matrixWorld );

		if ( raycaster.ray.intersectsSphere( sphere ) === false ) return;

		//

		inverseMatrix.getInverse( matrixWorld );
		ray.copy( raycaster.ray ).applyMatrix4( inverseMatrix );

		// Check boundingBox before continuing

		if ( geometry.boundingBox !== null ) {

			if ( ray.intersectsBox( geometry.boundingBox ) === false ) return;

		}

		var uvs, intersection;

		if ( geometry instanceof THREE.BufferGeometry ) {

			var a, b, c;
			var index = geometry.index;
			var attributes = geometry.attributes;
			var positions = attributes.position.array;

			if ( attributes.uv !== undefined ) {

				uvs = attributes.uv.array;

			}

			if ( index !== null ) {

				var indices = index.array;

				for ( var i = 0, l = indices.length; i < l; i += 3 ) {

					a = indices[ i ];
					b = indices[ i + 1 ];
					c = indices[ i + 2 ];

					intersection = checkBufferGeometryIntersection( this, raycaster, ray, positions, uvs, a, b, c );

					if ( intersection ) {

						intersection.faceIndex = Math.floor( i / 3 ); // triangle number in indices buffer semantics
						intersects.push( intersection );

					}

				}

			} else {


				for ( var i = 0, l = positions.length; i < l; i += 9 ) {

					a = i / 3;
					b = a + 1;
					c = a + 2;

					intersection = checkBufferGeometryIntersection( this, raycaster, ray, positions, uvs, a, b, c );

					if ( intersection ) {

						intersection.index = a; // triangle number in positions buffer semantics
						intersects.push( intersection );

					}

				}

			}

		} else if ( geometry instanceof THREE.Geometry ) {

			var fvA, fvB, fvC;
			var isFaceMaterial = material instanceof THREE.MultiMaterial;
			var materials = isFaceMaterial === true ? material.materials : null;

			var vertices = geometry.vertices;
			var faces = geometry.faces;
			var faceVertexUvs = geometry.faceVertexUvs[ 0 ];
			if ( faceVertexUvs.length > 0 ) uvs = faceVertexUvs;

			for ( var f = 0, fl = faces.length; f < fl; f ++ ) {

				var face = faces[ f ];
				var faceMaterial = isFaceMaterial === true ? materials[ face.materialIndex ] : material;

				if ( faceMaterial === undefined ) continue;

				fvA = vertices[ face.a ];
				fvB = vertices[ face.b ];
				fvC = vertices[ face.c ];

				if ( faceMaterial.morphTargets === true ) {

					var morphTargets = geometry.morphTargets;
					var morphInfluences = this.morphTargetInfluences;

					vA.set( 0, 0, 0 );
					vB.set( 0, 0, 0 );
					vC.set( 0, 0, 0 );

					for ( var t = 0, tl = morphTargets.length; t < tl; t ++ ) {

						var influence = morphInfluences[ t ];

						if ( influence === 0 ) continue;

						var targets = morphTargets[ t ].vertices;

						vA.addScaledVector( tempA.subVectors( targets[ face.a ], fvA ), influence );
						vB.addScaledVector( tempB.subVectors( targets[ face.b ], fvB ), influence );
						vC.addScaledVector( tempC.subVectors( targets[ face.c ], fvC ), influence );

					}

					vA.add( fvA );
					vB.add( fvB );
					vC.add( fvC );

					fvA = vA;
					fvB = vB;
					fvC = vC;

				}

				intersection = checkIntersection( this, raycaster, ray, fvA, fvB, fvC, intersectionPoint );

				if ( intersection ) {

					if ( uvs ) {

						var uvs_f = uvs[ f ];
						uvA.copy( uvs_f[ 0 ] );
						uvB.copy( uvs_f[ 1 ] );
						uvC.copy( uvs_f[ 2 ] );

						intersection.uv = uvIntersection( intersectionPoint, fvA, fvB, fvC, uvA, uvB, uvC );

					}

					intersection.face = face;
					intersection.faceIndex = f;
					intersects.push( intersection );

				}

			}

		}

	};

}() );

THREE.Mesh.prototype.clone = function () {

	return new this.constructor( this.geometry, this.material ).copy( this );

};

// File:src/objects/Bone.js

/**
 * @author mikael emtinger / http://gomo.se/
 * @author alteredq / http://alteredqualia.com/
 * @author ikerr / http://verold.com
 */

THREE.Bone = function ( skin ) {

	THREE.Object3D.call( this );

	this.type = 'Bone';

	this.skin = skin;

};

THREE.Bone.prototype = Object.create( THREE.Object3D.prototype );
THREE.Bone.prototype.constructor = THREE.Bone;

THREE.Bone.prototype.copy = function ( source ) {

	THREE.Object3D.prototype.copy.call( this, source );

	this.skin = source.skin;

	return this;

};

// File:src/objects/Skeleton.js

/**
 * @author mikael emtinger / http://gomo.se/
 * @author alteredq / http://alteredqualia.com/
 * @author michael guerrero / http://realitymeltdown.com
 * @author ikerr / http://verold.com
 */

THREE.Skeleton = function ( bones, boneInverses, useVertexTexture ) {

	this.useVertexTexture = useVertexTexture !== undefined ? useVertexTexture : true;

	this.identityMatrix = new THREE.Matrix4();

	// copy the bone array

	bones = bones || [];

	this.bones = bones.slice( 0 );

	// create a bone texture or an array of floats

	if ( this.useVertexTexture ) {

		// layout (1 matrix = 4 pixels)
		//      RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
		//  with  8x8  pixel texture max   16 bones * 4 pixels =  (8 * 8)
		//       16x16 pixel texture max   64 bones * 4 pixels = (16 * 16)
		//       32x32 pixel texture max  256 bones * 4 pixels = (32 * 32)
		//       64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)

		
		var size = Math.sqrt( this.bones.length * 4 ); // 4 pixels needed for 1 matrix
		size = THREE.Math.nextPowerOfTwo( Math.ceil( size ) );
		size = Math.max( size, 4 );

		this.boneTextureWidth = size;
		this.boneTextureHeight = size;

		this.boneMatrices = new Float32Array( this.boneTextureWidth * this.boneTextureHeight * 4 ); // 4 floats per RGBA pixel
		this.boneTexture = new THREE.DataTexture( this.boneMatrices, this.boneTextureWidth, this.boneTextureHeight, THREE.RGBAFormat, THREE.FloatType );

	} else {

		this.boneMatrices = new Float32Array( 16 * this.bones.length );

	}

	// use the supplied bone inverses or calculate the inverses

	if ( boneInverses === undefined ) {

		this.calculateInverses();

	} else {

		if ( this.bones.length === boneInverses.length ) {

			this.boneInverses = boneInverses.slice( 0 );

		} else {

			console.warn( 'THREE.Skeleton bonInverses is the wrong length.' );

			this.boneInverses = [];

			for ( var b = 0, bl = this.bones.length; b < bl; b ++ ) {

				this.boneInverses.push( new THREE.Matrix4() );

			}

		}

	}

};

THREE.Skeleton.prototype.calculateInverses = function () {

	this.boneInverses = [];

	for ( var b = 0, bl = this.bones.length; b < bl; b ++ ) {

		var inverse = new THREE.Matrix4();

		if ( this.bones[ b ] ) {

			inverse.getInverse( this.bones[ b ].matrixWorld );

		}

		this.boneInverses.push( inverse );

	}

};

THREE.Skeleton.prototype.pose = function () {

	var bone;

	// recover the bind-time world matrices

	for ( var b = 0, bl = this.bones.length; b < bl; b ++ ) {

		bone = this.bones[ b ];

		if ( bone ) {

			bone.matrixWorld.getInverse( this.boneInverses[ b ] );

		}

	}

	// compute the local matrices, positions, rotations and scales

	for ( var b = 0, bl = this.bones.length; b < bl; b ++ ) {

		bone = this.bones[ b ];

		if ( bone ) {

			if ( bone.parent ) {

				bone.matrix.getInverse( bone.parent.matrixWorld );
				bone.matrix.multiply( bone.matrixWorld );

			} else {

				bone.matrix.copy( bone.matrixWorld );

			}

			bone.matrix.decompose( bone.position, bone.quaternion, bone.scale );

		}

	}

};

THREE.Skeleton.prototype.update = ( function () {

	var offsetMatrix = new THREE.Matrix4();

	return function update() {

		// flatten bone matrices to array

		for ( var b = 0, bl = this.bones.length; b < bl; b ++ ) {

			// compute the offset between the current and the original transform

			var matrix = this.bones[ b ] ? this.bones[ b ].matrixWorld : this.identityMatrix;

			offsetMatrix.multiplyMatrices( matrix, this.boneInverses[ b ] );
			offsetMatrix.flattenToArrayOffset( this.boneMatrices, b * 16 );

		}

		if ( this.useVertexTexture ) {

			this.boneTexture.needsUpdate = true;

		}

	};

} )();

THREE.Skeleton.prototype.clone = function () {

	return new THREE.Skeleton( this.bones, this.boneInverses, this.useVertexTexture );

};

// File:src/objects/SkinnedMesh.js

/**
 * @author mikael emtinger / http://gomo.se/
 * @author alteredq / http://alteredqualia.com/
 * @author ikerr / http://verold.com
 */

THREE.SkinnedMesh = function ( geometry, material, useVertexTexture ) {

	THREE.Mesh.call( this, geometry, material );

	this.type = 'SkinnedMesh';

	this.bindMode = "attached";
	this.bindMatrix = new THREE.Matrix4();
	this.bindMatrixInverse = new THREE.Matrix4();

	// init bones

	// TODO: remove bone creation as there is no reason (other than
	// convenience) for THREE.SkinnedMesh to do this.

	var bones = [];

	if ( this.geometry && this.geometry.bones !== undefined ) {

		var bone, gbone;

		for ( var b = 0, bl = this.geometry.bones.length; b < bl; ++ b ) {

			gbone = this.geometry.bones[ b ];

			bone = new THREE.Bone( this );
			bones.push( bone );

			bone.name = gbone.name;
			bone.position.fromArray( gbone.pos );
			bone.quaternion.fromArray( gbone.rotq );
			if ( gbone.scl !== undefined ) bone.scale.fromArray( gbone.scl );

		}

		for ( var b = 0, bl = this.geometry.bones.length; b < bl; ++ b ) {

			gbone = this.geometry.bones[ b ];

			if ( gbone.parent !== - 1 && gbone.parent !== null ) {

				bones[ gbone.parent ].add( bones[ b ] );

			} else {

				this.add( bones[ b ] );

			}

		}

	}

	this.normalizeSkinWeights();

	this.updateMatrixWorld( true );
	this.bind( new THREE.Skeleton( bones, undefined, useVertexTexture ), this.matrixWorld );

};


THREE.SkinnedMesh.prototype = Object.create( THREE.Mesh.prototype );
THREE.SkinnedMesh.prototype.constructor = THREE.SkinnedMesh;

THREE.SkinnedMesh.prototype.bind = function( skeleton, bindMatrix ) {

	this.skeleton = skeleton;

	if ( bindMatrix === undefined ) {

		this.updateMatrixWorld( true );

		this.skeleton.calculateInverses();

		bindMatrix = this.matrixWorld;

	}

	this.bindMatrix.copy( bindMatrix );
	this.bindMatrixInverse.getInverse( bindMatrix );

};

THREE.SkinnedMesh.prototype.pose = function () {

	this.skeleton.pose();

};

THREE.SkinnedMesh.prototype.normalizeSkinWeights = function () {

	if ( this.geometry instanceof THREE.Geometry ) {

		for ( var i = 0; i < this.geometry.skinWeights.length; i ++ ) {

			var sw = this.geometry.skinWeights[ i ];

			var scale = 1.0 / sw.lengthManhattan();

			if ( scale !== Infinity ) {

				sw.multiplyScalar( scale );

			} else {

				sw.set( 1, 0, 0, 0 ); // do something reasonable

			}

		}

	} else if ( this.geometry instanceof THREE.BufferGeometry ) {

		var vec = new THREE.Vector4();

		var skinWeight = this.geometry.attributes.skinWeight;

		for ( var i = 0; i < skinWeight.count; i ++ ) {

			vec.x = skinWeight.getX( i );
			vec.y = skinWeight.getY( i );
			vec.z = skinWeight.getZ( i );
			vec.w = skinWeight.getW( i );

			var scale = 1.0 / vec.lengthManhattan();

			if ( scale !== Infinity ) {

				vec.multiplyScalar( scale );

			} else {

				vec.set( 1, 0, 0, 0 ); // do something reasonable

			}

			skinWeight.setXYZW( i, vec.x, vec.y, vec.z, vec.w );

		}

	}

};

THREE.SkinnedMesh.prototype.updateMatrixWorld = function( force ) {

	THREE.Mesh.prototype.updateMatrixWorld.call( this, true );

	if ( this.bindMode === "attached" ) {

		this.bindMatrixInverse.getInverse( this.matrixWorld );

	} else if ( this.bindMode === "detached" ) {

		this.bindMatrixInverse.getInverse( this.bindMatrix );

	} else {

		console.warn( 'THREE.SkinnedMesh unrecognized bindMode: ' + this.bindMode );

	}

};

THREE.SkinnedMesh.prototype.clone = function() {

	return new this.constructor( this.geometry, this.material, this.useVertexTexture ).copy( this );

};

// File:src/objects/LOD.js

/**
 * @author mikael emtinger / http://gomo.se/
 * @author alteredq / http://alteredqualia.com/
 * @author mrdoob / http://mrdoob.com/
 */

THREE.LOD = function () {

	THREE.Object3D.call( this );

	this.type = 'LOD';

	Object.defineProperties( this, {
		levels: {
			enumerable: true,
			value: []
		},
		objects: {
			get: function () {

				console.warn( 'THREE.LOD: .objects has been renamed to .levels.' );
				return this.levels;

			}
		}
	} );

};


THREE.LOD.prototype = Object.create( THREE.Object3D.prototype );
THREE.LOD.prototype.constructor = THREE.LOD;

THREE.LOD.prototype.addLevel = function ( object, distance ) {

	if ( distance === undefined ) distance = 0;

	distance = Math.abs( distance );

	var levels = this.levels;

	for ( var l = 0; l < levels.length; l ++ ) {

		if ( distance < levels[ l ].distance ) {

			break;

		}

	}

	levels.splice( l, 0, { distance: distance, object: object } );

	this.add( object );

};

THREE.LOD.prototype.getObjectForDistance = function ( distance ) {

	var levels = this.levels;

	for ( var i = 1, l = levels.length; i < l; i ++ ) {

		if ( distance < levels[ i ].distance ) {

			break;

		}

	}

	return levels[ i - 1 ].object;

};

THREE.LOD.prototype.raycast = ( function () {

	var matrixPosition = new THREE.Vector3();

	return function raycast( raycaster, intersects ) {

		matrixPosition.setFromMatrixPosition( this.matrixWorld );

		var distance = raycaster.ray.origin.distanceTo( matrixPosition );

		this.getObjectForDistance( distance ).raycast( raycaster, intersects );

	};

}() );

THREE.LOD.prototype.update = function () {

	var v1 = new THREE.Vector3();
	var v2 = new THREE.Vector3();

	return function update( camera ) {

		var levels = this.levels;

		if ( levels.length > 1 ) {

			v1.setFromMatrixPosition( camera.matrixWorld );
			v2.setFromMatrixPosition( this.matrixWorld );

			var distance = v1.distanceTo( v2 );

			levels[ 0 ].object.visible = true;

			for ( var i = 1, l = levels.length; i < l; i ++ ) {

				if ( distance >= levels[ i ].distance ) {

					levels[ i - 1 ].object.visible = false;
					levels[ i ].object.visible = true;

				} else {

					break;

				}

			}

			for ( ; i < l; i ++ ) {

				levels[ i ].object.visible = false;

			}

		}

	};

}();

THREE.LOD.prototype.copy = function ( source ) {

	THREE.Object3D.prototype.copy.call( this, source, false );

	var levels = source.levels;

	for ( var i = 0, l = levels.length; i < l; i ++ ) {

		var level = levels[ i ];

		this.addLevel( level.object.clone(), level.distance );

	}

	return this;

};

THREE.LOD.prototype.toJSON = function ( meta ) {

	var data = THREE.Object3D.prototype.toJSON.call( this, meta );

	data.object.levels = [];

	var levels = this.levels;

	for ( var i = 0, l = levels.length; i < l; i ++ ) {

		var level = levels[ i ];

		data.object.levels.push( {
			object: level.object.uuid,
			distance: level.distance
		} );

	}

	return data;

};

// File:src/objects/Sprite.js

/**
 * @author mikael emtinger / http://gomo.se/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Sprite = ( function () {

	var indices = new Uint16Array( [ 0, 1, 2,  0, 2, 3 ] );
	var vertices = new Float32Array( [ - 0.5, - 0.5, 0,   0.5, - 0.5, 0,   0.5, 0.5, 0,   - 0.5, 0.5, 0 ] );
	var uvs = new Float32Array( [ 0, 0,   1, 0,   1, 1,   0, 1 ] );

	var geometry = new THREE.BufferGeometry();
	geometry.setIndex( new THREE.BufferAttribute( indices, 1 ) );
	geometry.addAttribute( 'position', new THREE.BufferAttribute( vertices, 3 ) );
	geometry.addAttribute( 'uv', new THREE.BufferAttribute( uvs, 2 ) );

	return function Sprite( material ) {

		THREE.Object3D.call( this );

		this.type = 'Sprite';

		this.geometry = geometry;
		this.material = ( material !== undefined ) ? material : new THREE.SpriteMaterial();

	};

} )();

THREE.Sprite.prototype = Object.create( THREE.Object3D.prototype );
THREE.Sprite.prototype.constructor = THREE.Sprite;

THREE.Sprite.prototype.raycast = ( function () {

	var matrixPosition = new THREE.Vector3();

	return function raycast( raycaster, intersects ) {

		matrixPosition.setFromMatrixPosition( this.matrixWorld );

		var distanceSq = raycaster.ray.distanceSqToPoint( matrixPosition );
		var guessSizeSq = this.scale.x * this.scale.y;

		if ( distanceSq > guessSizeSq ) {

			return;

		}

		intersects.push( {

			distance: Math.sqrt( distanceSq ),
			point: this.position,
			face: null,
			object: this

		} );

	};

}() );

THREE.Sprite.prototype.clone = function () {

	return new this.constructor( this.material ).copy( this );

};

// Backwards compatibility

THREE.Particle = THREE.Sprite;

// File:src/objects/LensFlare.js

/**
 * @author mikael emtinger / http://gomo.se/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.LensFlare = function ( texture, size, distance, blending, color ) {

	THREE.Object3D.call( this );

	this.lensFlares = [];

	this.positionScreen = new THREE.Vector3();
	this.customUpdateCallback = undefined;

	if ( texture !== undefined ) {

		this.add( texture, size, distance, blending, color );

	}

};

THREE.LensFlare.prototype = Object.create( THREE.Object3D.prototype );
THREE.LensFlare.prototype.constructor = THREE.LensFlare;


/*
 * Add: adds another flare
 */

THREE.LensFlare.prototype.add = function ( texture, size, distance, blending, color, opacity ) {

	if ( size === undefined ) size = - 1;
	if ( distance === undefined ) distance = 0;
	if ( opacity === undefined ) opacity = 1;
	if ( color === undefined ) color = new THREE.Color( 0xffffff );
	if ( blending === undefined ) blending = THREE.NormalBlending;

	distance = Math.min( distance, Math.max( 0, distance ) );

	this.lensFlares.push( {
		texture: texture,	// THREE.Texture
		size: size, 		// size in pixels (-1 = use texture.width)
		distance: distance, 	// distance (0-1) from light source (0=at light source)
		x: 0, y: 0, z: 0,	// screen position (-1 => 1) z = 0 is in front z = 1 is back
		scale: 1, 		// scale
		rotation: 0, 		// rotation
		opacity: opacity,	// opacity
		color: color,		// color
		blending: blending	// blending
	} );

};

/*
 * Update lens flares update positions on all flares based on the screen position
 * Set myLensFlare.customUpdateCallback to alter the flares in your project specific way.
 */

THREE.LensFlare.prototype.updateLensFlares = function () {

	var f, fl = this.lensFlares.length;
	var flare;
	var vecX = - this.positionScreen.x * 2;
	var vecY = - this.positionScreen.y * 2;

	for ( f = 0; f < fl; f ++ ) {

		flare = this.lensFlares[ f ];

		flare.x = this.positionScreen.x + vecX * flare.distance;
		flare.y = this.positionScreen.y + vecY * flare.distance;

		flare.wantedRotation = flare.x * Math.PI * 0.25;
		flare.rotation += ( flare.wantedRotation - flare.rotation ) * 0.25;

	}

};

THREE.LensFlare.prototype.copy = function ( source ) {

	THREE.Object3D.prototype.copy.call( this, source );

	this.positionScreen.copy( source.positionScreen );
	this.customUpdateCallback = source.customUpdateCallback;

	for ( var i = 0, l = source.lensFlares.length; i < l; i ++ ) {

		this.lensFlares.push( source.lensFlares[ i ] );

	}

	return this;

};

// File:src/scenes/Scene.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.Scene = function () {

	THREE.Object3D.call( this );

	this.type = 'Scene';

	this.fog = null;
	this.overrideMaterial = null;

	this.autoUpdate = true; // checked by the renderer

};

THREE.Scene.prototype = Object.create( THREE.Object3D.prototype );
THREE.Scene.prototype.constructor = THREE.Scene;

THREE.Scene.prototype.copy = function ( source, recursive ) {

	THREE.Object3D.prototype.copy.call( this, source, recursive );

	if ( source.fog !== null ) this.fog = source.fog.clone();
	if ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();

	this.autoUpdate = source.autoUpdate;
	this.matrixAutoUpdate = source.matrixAutoUpdate;

	return this;

};

// File:src/scenes/Fog.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Fog = function ( color, near, far ) {

	this.name = '';

	this.color = new THREE.Color( color );

	this.near = ( near !== undefined ) ? near : 1;
	this.far = ( far !== undefined ) ? far : 1000;

};

THREE.Fog.prototype.clone = function () {

	return new THREE.Fog( this.color.getHex(), this.near, this.far );

};

// File:src/scenes/FogExp2.js

/**
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 */

THREE.FogExp2 = function ( color, density ) {

	this.name = '';

	this.color = new THREE.Color( color );
	this.density = ( density !== undefined ) ? density : 0.00025;

};

THREE.FogExp2.prototype.clone = function () {

	return new THREE.FogExp2( this.color.getHex(), this.density );

};

// File:src/renderers/shaders/ShaderChunk.js

THREE.ShaderChunk = {};

// File:src/renderers/shaders/ShaderChunk/alphamap_fragment.glsl

THREE.ShaderChunk[ 'alphamap_fragment' ] = "#ifdef USE_ALPHAMAP\n	diffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/alphamap_pars_fragment.glsl

THREE.ShaderChunk[ 'alphamap_pars_fragment' ] = "#ifdef USE_ALPHAMAP\n	uniform sampler2D alphaMap;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/alphatest_fragment.glsl

THREE.ShaderChunk[ 'alphatest_fragment' ] = "#ifdef ALPHATEST\n	if ( diffuseColor.a < ALPHATEST ) discard;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/ambient_pars.glsl

THREE.ShaderChunk[ 'ambient_pars' ] = "uniform vec3 ambientLightColor;\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n	return PI * ambientLightColor;\n}\n";

// File:src/renderers/shaders/ShaderChunk/aomap_fragment.glsl

THREE.ShaderChunk[ 'aomap_fragment' ] = "#ifdef USE_AOMAP\n	reflectedLight.indirectDiffuse *= ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/aomap_pars_fragment.glsl

THREE.ShaderChunk[ 'aomap_pars_fragment' ] = "#ifdef USE_AOMAP\n	uniform sampler2D aoMap;\n	uniform float aoMapIntensity;\n#endif";

// File:src/renderers/shaders/ShaderChunk/begin_vertex.glsl

THREE.ShaderChunk[ 'begin_vertex' ] = "\nvec3 transformed = vec3( position );\n";

// File:src/renderers/shaders/ShaderChunk/beginnormal_vertex.glsl

THREE.ShaderChunk[ 'beginnormal_vertex' ] = "\nvec3 objectNormal = vec3( normal );\n";

// File:src/renderers/shaders/ShaderChunk/bsdfs.glsl

THREE.ShaderChunk[ 'bsdfs' ] = "bool testLightInRange( const in float lightDistance, const in float cutoffDistance ) {\n	return any( bvec2( cutoffDistance == 0.0, lightDistance < cutoffDistance ) );\n}\nfloat calcLightAttenuation( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n	if ( decayExponent > 0.0 ) {\n	  return pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\n	}\n	return 1.0;\n}\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\n	return RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 specularColor, const in float dotLH ) {\n	float fresnel = exp2( ( -5.55473 * dotLH - 6.98316 ) * dotLH );\n	return ( 1.0 - specularColor ) * fresnel + specularColor;\n}\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\n	float a2 = alpha * alpha;\n	float gl = dotNL + pow( a2 + ( 1.0 - a2 ) * dotNL * dotNL, 0.5 );\n	float gv = dotNV + pow( a2 + ( 1.0 - a2 ) * dotNV * dotNV, 0.5 );\n	return 1.0 / ( gl * gv );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n	float a2 = alpha * alpha;\n	float denom = dotNH * dotNH * ( a2 - 1.0 ) + 1.0;\n	return RECIPROCAL_PI * a2 / ( denom * denom );\n}\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float roughness ) {\n	float alpha = roughness * roughness;\n	vec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n	float dotNL = saturate( dot( geometry.normal, incidentLight.direction ) );\n	float dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n	float dotNH = saturate( dot( geometry.normal, halfDir ) );\n	float dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n	vec3 F = F_Schlick( specularColor, dotLH );\n	float G = G_GGX_Smith( alpha, dotNL, dotNV );\n	float D = D_GGX( alpha, dotNH );\n	return F * ( G * D );\n}\nvec3 BRDF_Specular_GGX_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness ) {\n	float dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n	const vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n	const vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n	vec4 r = roughness * c0 + c1;\n	float a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n	vec2 AB = vec2( -1.04, 1.04 ) * a004 + r.zw;\n	return specularColor * AB.x + AB.y;\n}\nfloat G_BlinnPhong_Implicit( ) {\n	return 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n	return RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\n	vec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n	float dotNH = saturate( dot( geometry.normal, halfDir ) );\n	float dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n	vec3 F = F_Schlick( specularColor, dotLH );\n	float G = G_BlinnPhong_Implicit( );\n	float D = D_BlinnPhong( shininess, dotNH );\n	return F * ( G * D );\n}\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\n	return ( 2.0 / square( ggxRoughness + 0.0001 ) - 2.0 );\n}\n";

// File:src/renderers/shaders/ShaderChunk/bumpmap_pars_fragment.glsl

THREE.ShaderChunk[ 'bumpmap_pars_fragment' ] = "#ifdef USE_BUMPMAP\n	uniform sampler2D bumpMap;\n	uniform float bumpScale;\n	vec2 dHdxy_fwd() {\n		vec2 dSTdx = dFdx( vUv );\n		vec2 dSTdy = dFdy( vUv );\n		float Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n		float dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n		float dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n		return vec2( dBx, dBy );\n	}\n	vec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy ) {\n		vec3 vSigmaX = dFdx( surf_pos );\n		vec3 vSigmaY = dFdy( surf_pos );\n		vec3 vN = surf_norm;\n		vec3 R1 = cross( vSigmaY, vN );\n		vec3 R2 = cross( vN, vSigmaX );\n		float fDet = dot( vSigmaX, R1 );\n		vec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n		return normalize( abs( fDet ) * surf_norm - vGrad );\n	}\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/color_fragment.glsl

THREE.ShaderChunk[ 'color_fragment' ] = "#ifdef USE_COLOR\n	diffuseColor.rgb *= vColor;\n#endif";

// File:src/renderers/shaders/ShaderChunk/color_pars_fragment.glsl

THREE.ShaderChunk[ 'color_pars_fragment' ] = "#ifdef USE_COLOR\n	varying vec3 vColor;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/color_pars_vertex.glsl

THREE.ShaderChunk[ 'color_pars_vertex' ] = "#ifdef USE_COLOR\n	varying vec3 vColor;\n#endif";

// File:src/renderers/shaders/ShaderChunk/color_vertex.glsl

THREE.ShaderChunk[ 'color_vertex' ] = "#ifdef USE_COLOR\n	vColor.xyz = color.xyz;\n#endif";

// File:src/renderers/shaders/ShaderChunk/common.glsl

THREE.ShaderChunk[ 'common' ] = "#define PI 3.14159\n#define PI2 6.28318\n#define RECIPROCAL_PI 0.31830988618\n#define RECIPROCAL_PI2 0.15915494\n#define LOG2 1.442695\n#define EPSILON 1e-6\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#define whiteCompliment(a) ( 1.0 - saturate( a ) )\nfloat square( const in float x ) { return x*x; }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nstruct IncidentLight {\n	vec3 color;\n	vec3 direction;\n	bool visible;\n};\nstruct ReflectedLight {\n	vec3 directDiffuse;\n	vec3 directSpecular;\n	vec3 indirectDiffuse;\n	vec3 indirectSpecular;\n};\nstruct GeometricContext {\n	vec3 position;\n	vec3 normal;\n	vec3 viewDir;\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n	return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n	return normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n	float distance = dot( planeNormal, point - pointOnPlane );\n	return - distance * planeNormal + point;\n}\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n	return sign( dot( point - pointOnPlane, planeNormal ) );\n}\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\n	return lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\n}\nvec3 inputToLinear( in vec3 a ) {\n	#ifdef GAMMA_INPUT\n		return pow( a, vec3( float( GAMMA_FACTOR ) ) );\n	#else\n		return a;\n	#endif\n}\nvec3 linearToOutput( in vec3 a ) {\n	#ifdef GAMMA_OUTPUT\n		return pow( a, vec3( 1.0 / float( GAMMA_FACTOR ) ) );\n	#else\n		return a;\n	#endif\n}\n";

// File:src/renderers/shaders/ShaderChunk/defaultnormal_vertex.glsl

THREE.ShaderChunk[ 'defaultnormal_vertex' ] = "#ifdef FLIP_SIDED\n	objectNormal = -objectNormal;\n#endif\nvec3 transformedNormal = normalMatrix * objectNormal;\n";

// File:src/renderers/shaders/ShaderChunk/displacementmap_vertex.glsl

THREE.ShaderChunk[ 'displacementmap_vertex' ] = "#ifdef USE_DISPLACEMENTMAP\n	transformed += normal * ( texture2D( displacementMap, uv ).x * displacementScale + displacementBias );\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/displacementmap_pars_vertex.glsl

THREE.ShaderChunk[ 'displacementmap_pars_vertex' ] = "#ifdef USE_DISPLACEMENTMAP\n	uniform sampler2D displacementMap;\n	uniform float displacementScale;\n	uniform float displacementBias;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/emissivemap_fragment.glsl

THREE.ShaderChunk[ 'emissivemap_fragment' ] = "#ifdef USE_EMISSIVEMAP\n	vec4 emissiveColor = texture2D( emissiveMap, vUv );\n	emissiveColor.rgb = inputToLinear( emissiveColor.rgb );\n	totalEmissiveLight *= emissiveColor.rgb;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/emissivemap_pars_fragment.glsl

THREE.ShaderChunk[ 'emissivemap_pars_fragment' ] = "#ifdef USE_EMISSIVEMAP\n	uniform sampler2D emissiveMap;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/envmap_fragment.glsl

THREE.ShaderChunk[ 'envmap_fragment' ] = "#ifdef USE_ENVMAP\n	#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n		vec3 cameraToVertex = normalize( vWorldPosition - cameraPosition );\n		vec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n		#ifdef ENVMAP_MODE_REFLECTION\n			vec3 reflectVec = reflect( cameraToVertex, worldNormal );\n		#else\n			vec3 reflectVec = refract( cameraToVertex, worldNormal, refractionRatio );\n		#endif\n	#else\n		vec3 reflectVec = vReflect;\n	#endif\n	#ifdef DOUBLE_SIDED\n		float flipNormal = ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n	#else\n		float flipNormal = 1.0;\n	#endif\n	#ifdef ENVMAP_TYPE_CUBE\n		vec4 envColor = textureCube( envMap, flipNormal * vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n	#elif defined( ENVMAP_TYPE_EQUIREC )\n		vec2 sampleUV;\n		sampleUV.y = saturate( flipNormal * reflectVec.y * 0.5 + 0.5 );\n		sampleUV.x = atan( flipNormal * reflectVec.z, flipNormal * reflectVec.x ) * RECIPROCAL_PI2 + 0.5;\n		vec4 envColor = texture2D( envMap, sampleUV );\n	#elif defined( ENVMAP_TYPE_SPHERE )\n		vec3 reflectView = flipNormal * normalize((viewMatrix * vec4( reflectVec, 0.0 )).xyz + vec3(0.0,0.0,1.0));\n		vec4 envColor = texture2D( envMap, reflectView.xy * 0.5 + 0.5 );\n	#endif\n	envColor.xyz = inputToLinear( envColor.xyz );\n	#ifdef ENVMAP_BLENDING_MULTIPLY\n		outgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n	#elif defined( ENVMAP_BLENDING_MIX )\n		outgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n	#elif defined( ENVMAP_BLENDING_ADD )\n		outgoingLight += envColor.xyz * specularStrength * reflectivity;\n	#endif\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/envmap_pars_fragment.glsl

THREE.ShaderChunk[ 'envmap_pars_fragment' ] = "#if defined( USE_ENVMAP ) || defined( STANDARD )\n	uniform float reflectivity;\n	uniform float envMapIntenstiy;\n#endif\n#ifdef USE_ENVMAP\n	#ifdef ENVMAP_TYPE_CUBE\n		uniform samplerCube envMap;\n	#else\n		uniform sampler2D envMap;\n	#endif\n	uniform float flipEnvMap;\n	#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( STANDARD )\n		uniform float refractionRatio;\n	#else\n		varying vec3 vReflect;\n	#endif\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/envmap_pars_vertex.glsl

THREE.ShaderChunk[ 'envmap_pars_vertex' ] = "#if defined( USE_ENVMAP ) && ! defined( USE_BUMPMAP ) && ! defined( USE_NORMALMAP ) && ! defined( PHONG ) && ! defined( STANDARD )\n	varying vec3 vReflect;\n	uniform float refractionRatio;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/envmap_vertex.glsl

THREE.ShaderChunk[ 'envmap_vertex' ] = "#if defined( USE_ENVMAP ) && ! defined( USE_BUMPMAP ) && ! defined( USE_NORMALMAP ) && ! defined( PHONG ) && ! defined( STANDARD )\n	vec3 cameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n	vec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n	#ifdef ENVMAP_MODE_REFLECTION\n		vReflect = reflect( cameraToVertex, worldNormal );\n	#else\n		vReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n	#endif\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/fog_fragment.glsl

THREE.ShaderChunk[ 'fog_fragment' ] = "#ifdef USE_FOG\n	#ifdef USE_LOGDEPTHBUF_EXT\n		float depth = gl_FragDepthEXT / gl_FragCoord.w;\n	#else\n		float depth = gl_FragCoord.z / gl_FragCoord.w;\n	#endif\n	#ifdef FOG_EXP2\n		float fogFactor = whiteCompliment( exp2( - fogDensity * fogDensity * depth * depth * LOG2 ) );\n	#else\n		float fogFactor = smoothstep( fogNear, fogFar, depth );\n	#endif\n	\n	outgoingLight = mix( outgoingLight, fogColor, fogFactor );\n#endif";

// File:src/renderers/shaders/ShaderChunk/fog_pars_fragment.glsl

THREE.ShaderChunk[ 'fog_pars_fragment' ] = "#ifdef USE_FOG\n	uniform vec3 fogColor;\n	#ifdef FOG_EXP2\n		uniform float fogDensity;\n	#else\n		uniform float fogNear;\n		uniform float fogFar;\n	#endif\n#endif";

// File:src/renderers/shaders/ShaderChunk/lightmap_fragment.glsl

THREE.ShaderChunk[ 'lightmap_fragment' ] = "#ifdef USE_LIGHTMAP\n	reflectedLight.indirectDiffuse += PI * texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/lightmap_pars_fragment.glsl

THREE.ShaderChunk[ 'lightmap_pars_fragment' ] = "#ifdef USE_LIGHTMAP\n	uniform sampler2D lightMap;\n	uniform float lightMapIntensity;\n#endif";

// File:src/renderers/shaders/ShaderChunk/lights_lambert_vertex.glsl

THREE.ShaderChunk[ 'lights_lambert_vertex' ] = "vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n	vLightBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\n#if NUM_POINT_LIGHTS > 0\n	for ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n		directLight = getPointDirectLight( pointLights[ i ], geometry );\n		dotNL = dot( geometry.normal, directLight.direction );\n		directLightColor_Diffuse = PI * directLight.color;\n		vLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n		#ifdef DOUBLE_SIDED\n			vLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n		#endif\n	}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n	for ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n		directLight = getSpotDirectLight( spotLights[ i ], geometry );\n		dotNL = dot( geometry.normal, directLight.direction );\n		directLightColor_Diffuse = PI * directLight.color;\n		vLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n		#ifdef DOUBLE_SIDED\n			vLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n		#endif\n	}\n#endif\n#if NUM_DIR_LIGHTS > 0\n	for ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n		directLight = getDirectionalDirectLight( directionalLights[ i ], geometry );\n		dotNL = dot( geometry.normal, directLight.direction );\n		directLightColor_Diffuse = PI * directLight.color;\n		vLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n		#ifdef DOUBLE_SIDED\n			vLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n		#endif\n	}\n#endif\n#if NUM_HEMI_LIGHTS > 0\n	for ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n		vLightFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n		#ifdef DOUBLE_SIDED\n			vLightBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\n		#endif\n	}\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/lights_pars.glsl

THREE.ShaderChunk[ 'lights_pars' ] = "#if NUM_DIR_LIGHTS > 0\n	struct DirectionalLight {\n		vec3 direction;\n		vec3 color;\n		int shadow;\n		float shadowBias;\n		float shadowRadius;\n		vec2 shadowMapSize;\n	};\n	uniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n	IncidentLight getDirectionalDirectLight( const in DirectionalLight directionalLight, const in GeometricContext geometry ) {\n		IncidentLight directLight;\n		directLight.color = directionalLight.color;\n		directLight.direction = directionalLight.direction;\n		directLight.visible = true;\n		return directLight;\n	}\n#endif\n#if NUM_POINT_LIGHTS > 0\n	struct PointLight {\n		vec3 position;\n		vec3 color;\n		float distance;\n		float decay;\n		int shadow;\n		float shadowBias;\n		float shadowRadius;\n		vec2 shadowMapSize;\n	};\n	uniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n	IncidentLight getPointDirectLight( const in PointLight pointLight, const in GeometricContext geometry ) {\n		IncidentLight directLight;\n		vec3 lVector = pointLight.position - geometry.position;\n		directLight.direction = normalize( lVector );\n		float lightDistance = length( lVector );\n		if ( testLightInRange( lightDistance, pointLight.distance ) ) {\n			directLight.color = pointLight.color;\n			directLight.color *= calcLightAttenuation( lightDistance, pointLight.distance, pointLight.decay );\n			directLight.visible = true;\n		} else {\n			directLight.color = vec3( 0.0 );\n			directLight.visible = false;\n		}\n		return directLight;\n	}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n	struct SpotLight {\n		vec3 position;\n		vec3 direction;\n		vec3 color;\n		float distance;\n		float decay;\n		float angleCos;\n		float penumbra;\n		int shadow;\n		float shadowBias;\n		float shadowRadius;\n		vec2 shadowMapSize;\n	};\n	uniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n	IncidentLight getSpotDirectLight( const in SpotLight spotLight, const in GeometricContext geometry ) {\n		IncidentLight directLight;\n		vec3 lVector = spotLight.position - geometry.position;\n		directLight.direction = normalize( lVector );\n		float lightDistance = length( lVector );\n		float spotEffect = dot( directLight.direction, spotLight.direction );\n		if ( all( bvec2( spotEffect > spotLight.angleCos, testLightInRange( lightDistance, spotLight.distance ) ) ) ) {\n			float spotEffect = dot( spotLight.direction, directLight.direction );\n			spotEffect *= clamp( ( spotEffect - spotLight.angleCos ) / spotLight.penumbra, 0.0, 1.0 );\n			directLight.color = spotLight.color;\n			directLight.color *= ( spotEffect * calcLightAttenuation( lightDistance, spotLight.distance, spotLight.decay ) );\n			directLight.visible = true;\n		} else {\n			directLight.color = vec3( 0.0 );\n			directLight.visible = false;\n		}\n		return directLight;\n	}\n#endif\n#if NUM_HEMI_LIGHTS > 0\n	struct HemisphereLight {\n		vec3 direction;\n		vec3 skyColor;\n		vec3 groundColor;\n	};\n	uniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n	vec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\n		float dotNL = dot( geometry.normal, hemiLight.direction );\n		float hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n		return PI * mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n	}\n#endif\n#if defined( USE_ENVMAP ) && defined( STANDARD )\n	vec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\n		#ifdef DOUBLE_SIDED\n			float flipNormal = ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n		#else\n			float flipNormal = 1.0;\n		#endif\n		vec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n		#ifdef ENVMAP_TYPE_CUBE\n			vec3 queryVec = flipNormal * vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n			#ifdef TEXTURE_LOD_EXT\n				vec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\n			#else\n				vec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\n			#endif\n		#else\n			vec3 envMapColor = vec3( 0.0 );\n		#endif\n		envMapColor.rgb = inputToLinear( envMapColor.rgb );\n		return PI * envMapColor.rgb * envMapIntensity;\n	}\n	float getSpecularMIPLevel( const in float blinnShininessExponent, const in int maxMIPLevel ) {\n		float maxMIPLevelScalar = float( maxMIPLevel );\n		float desiredMIPLevel = maxMIPLevelScalar - 0.79248 - 0.5 * log2( square( blinnShininessExponent ) + 1.0 );\n		return clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\n	}\n	vec3 getLightProbeIndirectRadiance( const in GeometricContext geometry, const in float blinnShininessExponent, const in int maxMIPLevel ) {\n		#ifdef ENVMAP_MODE_REFLECTION\n			vec3 reflectVec = reflect( -geometry.viewDir, geometry.normal );\n		#else\n			vec3 reflectVec = refract( -geometry.viewDir, geometry.normal, refractionRatio );\n		#endif\n		#ifdef DOUBLE_SIDED\n			float flipNormal = ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n		#else\n			float flipNormal = 1.0;\n		#endif\n		reflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n		float specularMIPLevel = getSpecularMIPLevel( blinnShininessExponent, maxMIPLevel );\n		#ifdef ENVMAP_TYPE_CUBE\n			vec3 queryReflectVec = flipNormal * vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n			#ifdef TEXTURE_LOD_EXT\n				vec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\n			#else\n				vec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\n			#endif\n		#elif defined( ENVMAP_TYPE_EQUIREC )\n			vec2 sampleUV;\n			sampleUV.y = saturate( flipNormal * reflectVec.y * 0.5 + 0.5 );\n			sampleUV.x = atan( flipNormal * reflectVec.z, flipNormal * reflectVec.x ) * RECIPROCAL_PI2 + 0.5;\n			#ifdef TEXTURE_LOD_EXT\n				vec4 envMapColor = texture2DLodEXT( envMap, sampleUV, specularMIPLevel );\n			#else\n				vec4 envMapColor = texture2D( envMap, sampleUV, specularMIPLevel );\n			#endif\n		#elif defined( ENVMAP_TYPE_SPHERE )\n			vec3 reflectView = flipNormal * normalize((viewMatrix * vec4( reflectVec, 0.0 )).xyz + vec3(0.0,0.0,1.0));\n			#ifdef TEXTURE_LOD_EXT\n				vec4 envMapColor = texture2DLodEXT( envMap, reflectView.xy * 0.5 + 0.5, specularMIPLevel );\n			#else\n				vec4 envMapColor = texture2D( envMap, reflectView.xy * 0.5 + 0.5, specularMIPLevel );\n			#endif\n		#endif\n		envMapColor.rgb = inputToLinear( envMapColor.rgb );\n		return envMapColor.rgb * envMapIntensity;\n	}\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/lights_phong_fragment.glsl

THREE.ShaderChunk[ 'lights_phong_fragment' ] = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;\n";

// File:src/renderers/shaders/ShaderChunk/lights_phong_pars_fragment.glsl

THREE.ShaderChunk[ 'lights_phong_pars_fragment' ] = "#ifdef USE_ENVMAP\n	varying vec3 vWorldPosition;\n#endif\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n	varying vec3 vNormal;\n#endif\nstruct BlinnPhongMaterial {\n	vec3	diffuseColor;\n	vec3	specularColor;\n	float	specularShininess;\n	float	specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n	float dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n	vec3 irradiance = dotNL * PI * directLight.color;\n	reflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n	reflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n	reflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct				RE_Direct_BlinnPhong\n#define RE_IndirectDiffuse		RE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )	(0)\n";

// File:src/renderers/shaders/ShaderChunk/lights_phong_pars_vertex.glsl

THREE.ShaderChunk[ 'lights_phong_pars_vertex' ] = "#ifdef USE_ENVMAP\n	varying vec3 vWorldPosition;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/lights_phong_vertex.glsl

THREE.ShaderChunk[ 'lights_phong_vertex' ] = "#ifdef USE_ENVMAP\n	vWorldPosition = worldPosition.xyz;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/lights_standard_fragment.glsl

THREE.ShaderChunk[ 'lights_standard_fragment' ] = "StandardMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nmaterial.specularRoughness = clamp( roughnessFactor, 0.04, 1.0 );\nmaterial.specularColor = mix( vec3( 0.04 ), diffuseColor.rgb, metalnessFactor );\n";

// File:src/renderers/shaders/ShaderChunk/lights_standard_pars_fragment.glsl

THREE.ShaderChunk[ 'lights_standard_pars_fragment' ] = "struct StandardMaterial {\n	vec3	diffuseColor;\n	float	specularRoughness;\n	vec3	specularColor;\n};\nvoid RE_Direct_Standard( const in IncidentLight directLight, const in GeometricContext geometry, const in StandardMaterial material, inout ReflectedLight reflectedLight ) {\n	float dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n	vec3 irradiance = dotNL * PI * directLight.color;\n	reflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n	reflectedLight.directSpecular += irradiance * BRDF_Specular_GGX( directLight, geometry, material.specularColor, material.specularRoughness );\n}\nvoid RE_IndirectDiffuse_Standard( const in vec3 irradiance, const in GeometricContext geometry, const in StandardMaterial material, inout ReflectedLight reflectedLight ) {\n	reflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Standard( const in vec3 radiance, const in GeometricContext geometry, const in StandardMaterial material, inout ReflectedLight reflectedLight ) {\n	reflectedLight.indirectSpecular += radiance * BRDF_Specular_GGX_Environment( geometry, material.specularColor, material.specularRoughness );\n}\n#define RE_Direct				RE_Direct_Standard\n#define RE_IndirectDiffuse		RE_IndirectDiffuse_Standard\n#define RE_IndirectSpecular		RE_IndirectSpecular_Standard\n#define Material_BlinnShininessExponent( material )   GGXRoughnessToBlinnExponent( material.specularRoughness )\n";

// File:src/renderers/shaders/ShaderChunk/lights_template.glsl

THREE.ShaderChunk[ 'lights_template' ] = "\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = normalize( vViewPosition );\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n	PointLight pointLight;\n	for ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n		pointLight = pointLights[ i ];\n		directLight = getPointDirectLight( pointLight, geometry );\n		#ifdef USE_SHADOWMAP\n		directLight.color *= all( bvec2( pointLight.shadow, directLight.visible ) ) ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ] ) : 1.0;\n		#endif\n		RE_Direct( directLight, geometry, material, reflectedLight );\n	}\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n	SpotLight spotLight;\n	for ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n		spotLight = spotLights[ i ];\n		directLight = getSpotDirectLight( spotLight, geometry );\n		#ifdef USE_SHADOWMAP\n		directLight.color *= all( bvec2( spotLight.shadow, directLight.visible ) ) ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n		#endif\n		RE_Direct( directLight, geometry, material, reflectedLight );\n	}\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n	DirectionalLight directionalLight;\n	for ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n		directionalLight = directionalLights[ i ];\n		directLight = getDirectionalDirectLight( directionalLight, geometry );\n		#ifdef USE_SHADOWMAP\n		directLight.color *= all( bvec2( directionalLight.shadow, directLight.visible ) ) ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n		#endif\n		RE_Direct( directLight, geometry, material, reflectedLight );\n	}\n#endif\n#if defined( RE_IndirectDiffuse )\n	vec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n	#ifdef USE_LIGHTMAP\n		irradiance += PI * texture2D( lightMap, vUv2 ).xyz * lightMapIntensity;\n	#endif\n	#if ( NUM_HEMI_LIGHTS > 0 )\n		for ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n			irradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n		}\n	#endif\n	RE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n	vec3 radiance = getLightProbeIndirectRadiance( geometry, Material_BlinnShininessExponent( material ), 8 );\n	RE_IndirectSpecular( radiance, geometry, material, reflectedLight );\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/linear_to_gamma_fragment.glsl

THREE.ShaderChunk[ 'linear_to_gamma_fragment' ] = "\n	outgoingLight = linearToOutput( outgoingLight );\n";

// File:src/renderers/shaders/ShaderChunk/logdepthbuf_fragment.glsl

THREE.ShaderChunk[ 'logdepthbuf_fragment' ] = "#if defined(USE_LOGDEPTHBUF) && defined(USE_LOGDEPTHBUF_EXT)\n	gl_FragDepthEXT = log2(vFragDepth) * logDepthBufFC * 0.5;\n#endif";

// File:src/renderers/shaders/ShaderChunk/logdepthbuf_pars_fragment.glsl

THREE.ShaderChunk[ 'logdepthbuf_pars_fragment' ] = "#ifdef USE_LOGDEPTHBUF\n	uniform float logDepthBufFC;\n	#ifdef USE_LOGDEPTHBUF_EXT\n		varying float vFragDepth;\n	#endif\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/logdepthbuf_pars_vertex.glsl

THREE.ShaderChunk[ 'logdepthbuf_pars_vertex' ] = "#ifdef USE_LOGDEPTHBUF\n	#ifdef USE_LOGDEPTHBUF_EXT\n		varying float vFragDepth;\n	#endif\n	uniform float logDepthBufFC;\n#endif";

// File:src/renderers/shaders/ShaderChunk/logdepthbuf_vertex.glsl

THREE.ShaderChunk[ 'logdepthbuf_vertex' ] = "#ifdef USE_LOGDEPTHBUF\n	gl_Position.z = log2(max( EPSILON, gl_Position.w + 1.0 )) * logDepthBufFC;\n	#ifdef USE_LOGDEPTHBUF_EXT\n		vFragDepth = 1.0 + gl_Position.w;\n	#else\n		gl_Position.z = (gl_Position.z - 1.0) * gl_Position.w;\n	#endif\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/map_fragment.glsl

THREE.ShaderChunk[ 'map_fragment' ] = "#ifdef USE_MAP\n	vec4 texelColor = texture2D( map, vUv );\n	texelColor.xyz = inputToLinear( texelColor.xyz );\n	diffuseColor *= texelColor;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/map_pars_fragment.glsl

THREE.ShaderChunk[ 'map_pars_fragment' ] = "#ifdef USE_MAP\n	uniform sampler2D map;\n#endif";

// File:src/renderers/shaders/ShaderChunk/map_particle_fragment.glsl

THREE.ShaderChunk[ 'map_particle_fragment' ] = "#ifdef USE_MAP\n	diffuseColor *= texture2D( map, vec2( gl_PointCoord.x, 1.0 - gl_PointCoord.y ) * offsetRepeat.zw + offsetRepeat.xy );\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/map_particle_pars_fragment.glsl

THREE.ShaderChunk[ 'map_particle_pars_fragment' ] = "#ifdef USE_MAP\n	uniform vec4 offsetRepeat;\n	uniform sampler2D map;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/metalnessmap_fragment.glsl

THREE.ShaderChunk[ 'metalnessmap_fragment' ] = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n	vec4 texelMetalness = texture2D( metalnessMap, vUv );\n	metalnessFactor *= texelMetalness.r;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/metalnessmap_pars_fragment.glsl

THREE.ShaderChunk[ 'metalnessmap_pars_fragment' ] = "#ifdef USE_METALNESSMAP\n	uniform sampler2D metalnessMap;\n#endif";

// File:src/renderers/shaders/ShaderChunk/morphnormal_vertex.glsl

THREE.ShaderChunk[ 'morphnormal_vertex' ] = "#ifdef USE_MORPHNORMALS\n	objectNormal += ( morphNormal0 - normal ) * morphTargetInfluences[ 0 ];\n	objectNormal += ( morphNormal1 - normal ) * morphTargetInfluences[ 1 ];\n	objectNormal += ( morphNormal2 - normal ) * morphTargetInfluences[ 2 ];\n	objectNormal += ( morphNormal3 - normal ) * morphTargetInfluences[ 3 ];\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/morphtarget_pars_vertex.glsl

THREE.ShaderChunk[ 'morphtarget_pars_vertex' ] = "#ifdef USE_MORPHTARGETS\n	#ifndef USE_MORPHNORMALS\n	uniform float morphTargetInfluences[ 8 ];\n	#else\n	uniform float morphTargetInfluences[ 4 ];\n	#endif\n#endif";

// File:src/renderers/shaders/ShaderChunk/morphtarget_vertex.glsl

THREE.ShaderChunk[ 'morphtarget_vertex' ] = "#ifdef USE_MORPHTARGETS\n	transformed += ( morphTarget0 - position ) * morphTargetInfluences[ 0 ];\n	transformed += ( morphTarget1 - position ) * morphTargetInfluences[ 1 ];\n	transformed += ( morphTarget2 - position ) * morphTargetInfluences[ 2 ];\n	transformed += ( morphTarget3 - position ) * morphTargetInfluences[ 3 ];\n	#ifndef USE_MORPHNORMALS\n	transformed += ( morphTarget4 - position ) * morphTargetInfluences[ 4 ];\n	transformed += ( morphTarget5 - position ) * morphTargetInfluences[ 5 ];\n	transformed += ( morphTarget6 - position ) * morphTargetInfluences[ 6 ];\n	transformed += ( morphTarget7 - position ) * morphTargetInfluences[ 7 ];\n	#endif\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/normal_fragment.glsl

THREE.ShaderChunk[ 'normal_fragment' ] = "#ifdef FLAT_SHADED\n	vec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n	vec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n	vec3 normal = normalize( cross( fdx, fdy ) );\n#else\n	vec3 normal = normalize( vNormal );\n	#ifdef DOUBLE_SIDED\n		normal = normal * ( -1.0 + 2.0 * float( gl_FrontFacing ) );\n	#endif\n#endif\n#ifdef USE_NORMALMAP\n	normal = perturbNormal2Arb( -vViewPosition, normal );\n#elif defined( USE_BUMPMAP )\n	normal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd() );\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/normalmap_pars_fragment.glsl

THREE.ShaderChunk[ 'normalmap_pars_fragment' ] = "#ifdef USE_NORMALMAP\n	uniform sampler2D normalMap;\n	uniform vec2 normalScale;\n	vec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm ) {\n		vec3 q0 = dFdx( eye_pos.xyz );\n		vec3 q1 = dFdy( eye_pos.xyz );\n		vec2 st0 = dFdx( vUv.st );\n		vec2 st1 = dFdy( vUv.st );\n		vec3 S = normalize( q0 * st1.t - q1 * st0.t );\n		vec3 T = normalize( -q0 * st1.s + q1 * st0.s );\n		vec3 N = normalize( surf_norm );\n		vec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n		mapN.xy = normalScale * mapN.xy;\n		mat3 tsn = mat3( S, T, N );\n		return normalize( tsn * mapN );\n	}\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/project_vertex.glsl

THREE.ShaderChunk[ 'project_vertex' ] = "#ifdef USE_SKINNING\n	vec4 mvPosition = modelViewMatrix * skinned;\n#else\n	vec4 mvPosition = modelViewMatrix * vec4( transformed, 1.0 );\n#endif\ngl_Position = projectionMatrix * mvPosition;\n";

// File:src/renderers/shaders/ShaderChunk/roughnessmap_fragment.glsl

THREE.ShaderChunk[ 'roughnessmap_fragment' ] = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n	vec4 texelRoughness = texture2D( roughnessMap, vUv );\n	roughnessFactor *= texelRoughness.r;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/roughnessmap_pars_fragment.glsl

THREE.ShaderChunk[ 'roughnessmap_pars_fragment' ] = "#ifdef USE_ROUGHNESSMAP\n	uniform sampler2D roughnessMap;\n#endif";

// File:src/renderers/shaders/ShaderChunk/shadowmap_pars_fragment.glsl

THREE.ShaderChunk[ 'shadowmap_pars_fragment' ] = "#ifdef USE_SHADOWMAP\n	#if NUM_DIR_LIGHTS > 0\n		uniform sampler2D directionalShadowMap[ NUM_DIR_LIGHTS ];\n		varying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHTS ];\n	#endif\n	#if NUM_SPOT_LIGHTS > 0\n		uniform sampler2D spotShadowMap[ NUM_SPOT_LIGHTS ];\n		varying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHTS ];\n	#endif\n	#if NUM_POINT_LIGHTS > 0\n		uniform sampler2D pointShadowMap[ NUM_POINT_LIGHTS ];\n		varying vec4 vPointShadowCoord[ NUM_POINT_LIGHTS ];\n	#endif\n	float unpackDepth( const in vec4 rgba_depth ) {\n		const vec4 bit_shift = vec4( 1.0 / ( 256.0 * 256.0 * 256.0 ), 1.0 / ( 256.0 * 256.0 ), 1.0 / 256.0, 1.0 );\n		return dot( rgba_depth, bit_shift );\n	}\n	float texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n		return step( compare, unpackDepth( texture2D( depths, uv ) ) );\n	}\n	float texture2DShadowLerp( sampler2D depths, vec2 size, vec2 uv, float compare ) {\n		const vec2 offset = vec2( 0.0, 1.0 );\n		vec2 texelSize = vec2( 1.0 ) / size;\n		vec2 centroidUV = floor( uv * size + 0.5 ) / size;\n		float lb = texture2DCompare( depths, centroidUV + texelSize * offset.xx, compare );\n		float lt = texture2DCompare( depths, centroidUV + texelSize * offset.xy, compare );\n		float rb = texture2DCompare( depths, centroidUV + texelSize * offset.yx, compare );\n		float rt = texture2DCompare( depths, centroidUV + texelSize * offset.yy, compare );\n		vec2 f = fract( uv * size + 0.5 );\n		float a = mix( lb, lt, f.y );\n		float b = mix( rb, rt, f.y );\n		float c = mix( a, b, f.x );\n		return c;\n	}\n	float getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n		shadowCoord.xyz /= shadowCoord.w;\n		shadowCoord.z += shadowBias;\n		bvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n		bool inFrustum = all( inFrustumVec );\n		bvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n		bool frustumTest = all( frustumTestVec );\n		if ( frustumTest ) {\n		#if defined( SHADOWMAP_TYPE_PCF )\n			vec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n			float dx0 = - texelSize.x * shadowRadius;\n			float dy0 = - texelSize.y * shadowRadius;\n			float dx1 = + texelSize.x * shadowRadius;\n			float dy1 = + texelSize.y * shadowRadius;\n			return (\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n				texture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n			) * ( 1.0 / 9.0 );\n		#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n			vec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n			float dx0 = - texelSize.x * shadowRadius;\n			float dy0 = - texelSize.y * shadowRadius;\n			float dx1 = + texelSize.x * shadowRadius;\n			float dy1 = + texelSize.y * shadowRadius;\n			return (\n				texture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n				texture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n				texture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n				texture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n				texture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy, shadowCoord.z ) +\n				texture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n				texture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n				texture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n				texture2DShadowLerp( shadowMap, shadowMapSize, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n			) * ( 1.0 / 9.0 );\n		#else\n			return texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n		#endif\n		}\n		return 1.0;\n	}\n	vec2 cubeToUV( vec3 v, float texelSizeY ) {\n		vec3 absV = abs( v );\n		float scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n		absV *= scaleToCube;\n		v *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n		vec2 planar = v.xy;\n		float almostATexel = 1.5 * texelSizeY;\n		float almostOne = 1.0 - almostATexel;\n		if ( absV.z >= almostOne ) {\n			if ( v.z > 0.0 )\n				planar.x = 4.0 - v.x;\n		} else if ( absV.x >= almostOne ) {\n			float signX = sign( v.x );\n			planar.x = v.z * signX + 2.0 * signX;\n		} else if ( absV.y >= almostOne ) {\n			float signY = sign( v.y );\n			planar.x = v.x + 2.0 * signY + 2.0;\n			planar.y = v.z * signY - 2.0;\n		}\n		return vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n	}\n	float getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n		vec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n		vec3 lightToPosition = shadowCoord.xyz;\n		vec3 bd3D = normalize( lightToPosition );\n		float dp = ( length( lightToPosition ) - shadowBias ) / 1000.0;\n		#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT )\n			vec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n			return (\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n				texture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n			) * ( 1.0 / 9.0 );\n		#else\n			return texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n		#endif\n	}\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/shadowmap_pars_vertex.glsl

THREE.ShaderChunk[ 'shadowmap_pars_vertex' ] = "#ifdef USE_SHADOWMAP\n	#if NUM_DIR_LIGHTS > 0\n		uniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHTS ];\n		varying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHTS ];\n	#endif\n	#if NUM_SPOT_LIGHTS > 0\n		uniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHTS ];\n		varying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHTS ];\n	#endif\n	#if NUM_POINT_LIGHTS > 0\n		uniform mat4 pointShadowMatrix[ NUM_POINT_LIGHTS ];\n		varying vec4 vPointShadowCoord[ NUM_POINT_LIGHTS ];\n	#endif\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/shadowmap_vertex.glsl

THREE.ShaderChunk[ 'shadowmap_vertex' ] = "#ifdef USE_SHADOWMAP\n	#if NUM_DIR_LIGHTS > 0\n	for ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n		vDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * worldPosition;\n	}\n	#endif\n	#if NUM_SPOT_LIGHTS > 0\n	for ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n		vSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * worldPosition;\n	}\n	#endif\n	#if NUM_POINT_LIGHTS > 0\n	for ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n		vPointShadowCoord[ i ] = pointShadowMatrix[ i ] * worldPosition;\n	}\n	#endif\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/shadowmask_pars_fragment.glsl

THREE.ShaderChunk[ 'shadowmask_pars_fragment' ] = "float getShadowMask() {\n	float shadow = 1.0;\n	#ifdef USE_SHADOWMAP\n	#if NUM_DIR_LIGHTS > 0\n	DirectionalLight directionalLight;\n	for ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n		directionalLight = directionalLights[ i ];\n		shadow *= bool( directionalLight.shadow ) ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n	}\n	#endif\n	#if NUM_SPOT_LIGHTS > 0\n	SpotLight spotLight;\n	for ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n		spotLight = spotLights[ i ];\n		shadow *= bool( spotLight.shadow ) ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n	}\n	#endif\n	#if NUM_POINT_LIGHTS > 0\n	PointLight pointLight;\n	for ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n		pointLight = pointLights[ i ];\n		shadow *= bool( pointLight.shadow ) ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ] ) : 1.0;\n	}\n	#endif\n	#endif\n	return shadow;\n}\n";

// File:src/renderers/shaders/ShaderChunk/skinbase_vertex.glsl

THREE.ShaderChunk[ 'skinbase_vertex' ] = "#ifdef USE_SKINNING\n	mat4 boneMatX = getBoneMatrix( skinIndex.x );\n	mat4 boneMatY = getBoneMatrix( skinIndex.y );\n	mat4 boneMatZ = getBoneMatrix( skinIndex.z );\n	mat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";

// File:src/renderers/shaders/ShaderChunk/skinning_pars_vertex.glsl

THREE.ShaderChunk[ 'skinning_pars_vertex' ] = "#ifdef USE_SKINNING\n	uniform mat4 bindMatrix;\n	uniform mat4 bindMatrixInverse;\n	#ifdef BONE_TEXTURE\n		uniform sampler2D boneTexture;\n		uniform int boneTextureWidth;\n		uniform int boneTextureHeight;\n		mat4 getBoneMatrix( const in float i ) {\n			float j = i * 4.0;\n			float x = mod( j, float( boneTextureWidth ) );\n			float y = floor( j / float( boneTextureWidth ) );\n			float dx = 1.0 / float( boneTextureWidth );\n			float dy = 1.0 / float( boneTextureHeight );\n			y = dy * ( y + 0.5 );\n			vec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n			vec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n			vec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n			vec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n			mat4 bone = mat4( v1, v2, v3, v4 );\n			return bone;\n		}\n	#else\n		uniform mat4 boneGlobalMatrices[ MAX_BONES ];\n		mat4 getBoneMatrix( const in float i ) {\n			mat4 bone = boneGlobalMatrices[ int(i) ];\n			return bone;\n		}\n	#endif\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/skinning_vertex.glsl

THREE.ShaderChunk[ 'skinning_vertex' ] = "#ifdef USE_SKINNING\n	vec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n	vec4 skinned = vec4( 0.0 );\n	skinned += boneMatX * skinVertex * skinWeight.x;\n	skinned += boneMatY * skinVertex * skinWeight.y;\n	skinned += boneMatZ * skinVertex * skinWeight.z;\n	skinned += boneMatW * skinVertex * skinWeight.w;\n	skinned  = bindMatrixInverse * skinned;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/skinnormal_vertex.glsl

THREE.ShaderChunk[ 'skinnormal_vertex' ] = "#ifdef USE_SKINNING\n	mat4 skinMatrix = mat4( 0.0 );\n	skinMatrix += skinWeight.x * boneMatX;\n	skinMatrix += skinWeight.y * boneMatY;\n	skinMatrix += skinWeight.z * boneMatZ;\n	skinMatrix += skinWeight.w * boneMatW;\n	skinMatrix  = bindMatrixInverse * skinMatrix * bindMatrix;\n	objectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/specularmap_fragment.glsl

THREE.ShaderChunk[ 'specularmap_fragment' ] = "float specularStrength;\n#ifdef USE_SPECULARMAP\n	vec4 texelSpecular = texture2D( specularMap, vUv );\n	specularStrength = texelSpecular.r;\n#else\n	specularStrength = 1.0;\n#endif";

// File:src/renderers/shaders/ShaderChunk/specularmap_pars_fragment.glsl

THREE.ShaderChunk[ 'specularmap_pars_fragment' ] = "#ifdef USE_SPECULARMAP\n	uniform sampler2D specularMap;\n#endif";

// File:src/renderers/shaders/ShaderChunk/uv2_pars_fragment.glsl

THREE.ShaderChunk[ 'uv2_pars_fragment' ] = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n	varying vec2 vUv2;\n#endif";

// File:src/renderers/shaders/ShaderChunk/uv2_pars_vertex.glsl

THREE.ShaderChunk[ 'uv2_pars_vertex' ] = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n	attribute vec2 uv2;\n	varying vec2 vUv2;\n#endif";

// File:src/renderers/shaders/ShaderChunk/uv2_vertex.glsl

THREE.ShaderChunk[ 'uv2_vertex' ] = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n	vUv2 = uv2;\n#endif";

// File:src/renderers/shaders/ShaderChunk/uv_pars_fragment.glsl

THREE.ShaderChunk[ 'uv_pars_fragment' ] = "#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )\n	varying vec2 vUv;\n#endif";

// File:src/renderers/shaders/ShaderChunk/uv_pars_vertex.glsl

THREE.ShaderChunk[ 'uv_pars_vertex' ] = "#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )\n	varying vec2 vUv;\n	uniform vec4 offsetRepeat;\n#endif\n";

// File:src/renderers/shaders/ShaderChunk/uv_vertex.glsl

THREE.ShaderChunk[ 'uv_vertex' ] = "#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )\n	vUv = uv * offsetRepeat.zw + offsetRepeat.xy;\n#endif";

// File:src/renderers/shaders/ShaderChunk/worldpos_vertex.glsl

THREE.ShaderChunk[ 'worldpos_vertex' ] = "#if defined( USE_ENVMAP ) || defined( PHONG ) || defined( STANDARD ) || defined( LAMBERT ) || defined ( USE_SHADOWMAP )\n	#ifdef USE_SKINNING\n		vec4 worldPosition = modelMatrix * skinned;\n	#else\n		vec4 worldPosition = modelMatrix * vec4( transformed, 1.0 );\n	#endif\n#endif\n";

// File:src/renderers/shaders/UniformsUtils.js

/**
 * Uniform Utilities
 */

THREE.UniformsUtils = {

	merge: function ( uniforms ) {

		var merged = {};

		for ( var u = 0; u < uniforms.length; u ++ ) {

			var tmp = this.clone( uniforms[ u ] );

			for ( var p in tmp ) {

				merged[ p ] = tmp[ p ];

			}

		}

		return merged;

	},

	clone: function ( uniforms_src ) {

		var uniforms_dst = {};

		for ( var u in uniforms_src ) {

			uniforms_dst[ u ] = {};

			for ( var p in uniforms_src[ u ] ) {

				var parameter_src = uniforms_src[ u ][ p ];

				if ( parameter_src instanceof THREE.Color ||
					 parameter_src instanceof THREE.Vector2 ||
					 parameter_src instanceof THREE.Vector3 ||
					 parameter_src instanceof THREE.Vector4 ||
					 parameter_src instanceof THREE.Matrix3 ||
					 parameter_src instanceof THREE.Matrix4 ||
					 parameter_src instanceof THREE.Texture ) {

					uniforms_dst[ u ][ p ] = parameter_src.clone();

				} else if ( Array.isArray( parameter_src ) ) {

					uniforms_dst[ u ][ p ] = parameter_src.slice();

				} else {

					uniforms_dst[ u ][ p ] = parameter_src;

				}

			}

		}

		return uniforms_dst;

	}

};

// File:src/renderers/shaders/UniformsLib.js

/**
 * Uniforms library for shared webgl shaders
 */

THREE.UniformsLib = {

	common: {

		"diffuse": { type: "c", value: new THREE.Color( 0xeeeeee ) },
		"opacity": { type: "f", value: 1.0 },

		"map": { type: "t", value: null },
		"offsetRepeat": { type: "v4", value: new THREE.Vector4( 0, 0, 1, 1 ) },

		"specularMap": { type: "t", value: null },
		"alphaMap": { type: "t", value: null },

		"envMap": { type: "t", value: null },
		"flipEnvMap": { type: "f", value: - 1 },
		"reflectivity": { type: "f", value: 1.0 },
		"refractionRatio": { type: "f", value: 0.98 }

	},

	aomap: {

		"aoMap": { type: "t", value: null },
		"aoMapIntensity": { type: "f", value: 1 }

	},

	lightmap: {

		"lightMap": { type: "t", value: null },
		"lightMapIntensity": { type: "f", value: 1 }

	},

	emissivemap: {

		"emissiveMap": { type: "t", value: null }

	},

	bumpmap: {

		"bumpMap": { type: "t", value: null },
		"bumpScale": { type: "f", value: 1 }

	},

	normalmap: {

		"normalMap": { type: "t", value: null },
		"normalScale": { type: "v2", value: new THREE.Vector2( 1, 1 ) }

	},

	displacementmap: {

		"displacementMap": { type: "t", value: null },
		"displacementScale": { type: "f", value: 1 },
		"displacementBias": { type: "f", value: 0 }

	},

	roughnessmap: {

		"roughnessMap": { type: "t", value: null }

	},

	metalnessmap: {

		"metalnessMap": { type: "t", value: null }

	},

	fog: {

		"fogDensity": { type: "f", value: 0.00025 },
		"fogNear": { type: "f", value: 1 },
		"fogFar": { type: "f", value: 2000 },
		"fogColor": { type: "c", value: new THREE.Color( 0xffffff ) }

	},

	ambient: {

		"ambientLightColor": { type: "fv", value: [] }

	},

	lights: {

		"directionalLights": { type: "sa", value: [], properties: {
			"direction": { type: "v3" },
			"color": { type: "c" },

			"shadow": { type: "i" },
			"shadowBias": { type: "f" },
			"shadowRadius": { type: "f" },
			"shadowMapSize": { type: "v2" }
		} },

		"directionalShadowMap": { type: "tv", value: [] },
		"directionalShadowMatrix": { type: "m4v", value: [] },

		"spotLights": { type: "sa", value: [], properties: {
			"color": { type: "c" },
			"position": { type: "v3" },
			"direction": { type: "v3" },
			"distance": { type: "f" },
			"angleCos": { type: "f" },
			"penumbra": { type: "f" },
			"decay": { type: "f" },

			"shadow": { type: "i" },
			"shadowBias": { type: "f" },
			"shadowRadius": { type: "f" },
			"shadowMapSize": { type: "v2" }
		} },

		"spotShadowMap": { type: "tv", value: [] },
		"spotShadowMatrix": { type: "m4v", value: [] },

		"pointLights": { type: "sa", value: [], properties: {
			"color": { type: "c" },
			"position": { type: "v3" },
			"decay": { type: "f" },
			"distance": { type: "f" },

			"shadow": { type: "i" },
			"shadowBias": { type: "f" },
			"shadowRadius": { type: "f" },
			"shadowMapSize": { type: "v2" }
		} },

		"pointShadowMap": { type: "tv", value: [] },
		"pointShadowMatrix": { type: "m4v", value: [] },

		"hemisphereLights": { type: "sa", value: [], properties: {
			"direction": { type: "v3" },
			"skyColor": { type: "c" },
			"groundColor": { type: "c" }
		} }

	},

	points: {

		"diffuse": { type: "c", value: new THREE.Color( 0xeeeeee ) },
		"opacity": { type: "f", value: 1.0 },
		"size": { type: "f", value: 1.0 },
		"scale": { type: "f", value: 1.0 },
		"map": { type: "t", value: null },
		"offsetRepeat": { type: "v4", value: new THREE.Vector4( 0, 0, 1, 1 ) }

	}

};

// File:src/renderers/shaders/ShaderLib.js

/**
 * Webgl Shader Library for three.js
 *
 * @author alteredq / http://alteredqualia.com/
 * @author mrdoob / http://mrdoob.com/
 * @author mikael emtinger / http://gomo.se/
 */


THREE.ShaderLib = {

	'basic': {

		uniforms: THREE.UniformsUtils.merge( [

			THREE.UniformsLib[ "common" ],
			THREE.UniformsLib[ "aomap" ],
			THREE.UniformsLib[ "fog" ]

		] ),

		vertexShader: [

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "uv_pars_vertex" ],
			THREE.ShaderChunk[ "uv2_pars_vertex" ],
			THREE.ShaderChunk[ "envmap_pars_vertex" ],
			THREE.ShaderChunk[ "color_pars_vertex" ],
			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],
			THREE.ShaderChunk[ "skinning_pars_vertex" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {",

				THREE.ShaderChunk[ "uv_vertex" ],
				THREE.ShaderChunk[ "uv2_vertex" ],
				THREE.ShaderChunk[ "color_vertex" ],
				THREE.ShaderChunk[ "skinbase_vertex" ],

			"	#ifdef USE_ENVMAP",

				THREE.ShaderChunk[ "beginnormal_vertex" ],
				THREE.ShaderChunk[ "morphnormal_vertex" ],
				THREE.ShaderChunk[ "skinnormal_vertex" ],
				THREE.ShaderChunk[ "defaultnormal_vertex" ],

			"	#endif",

				THREE.ShaderChunk[ "begin_vertex" ],
				THREE.ShaderChunk[ "morphtarget_vertex" ],
				THREE.ShaderChunk[ "skinning_vertex" ],
				THREE.ShaderChunk[ "project_vertex" ],
				THREE.ShaderChunk[ "logdepthbuf_vertex" ],

				THREE.ShaderChunk[ "worldpos_vertex" ],
				THREE.ShaderChunk[ "envmap_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			"uniform vec3 diffuse;",
			"uniform float opacity;",

			"#ifndef FLAT_SHADED",

			"	varying vec3 vNormal;",

			"#endif",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "color_pars_fragment" ],
			THREE.ShaderChunk[ "uv_pars_fragment" ],
			THREE.ShaderChunk[ "uv2_pars_fragment" ],
			THREE.ShaderChunk[ "map_pars_fragment" ],
			THREE.ShaderChunk[ "alphamap_pars_fragment" ],
			THREE.ShaderChunk[ "aomap_pars_fragment" ],
			THREE.ShaderChunk[ "envmap_pars_fragment" ],
			THREE.ShaderChunk[ "fog_pars_fragment" ],
			THREE.ShaderChunk[ "specularmap_pars_fragment" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"void main() {",

			"	vec4 diffuseColor = vec4( diffuse, opacity );",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],
				THREE.ShaderChunk[ "map_fragment" ],
				THREE.ShaderChunk[ "color_fragment" ],
				THREE.ShaderChunk[ "alphamap_fragment" ],
				THREE.ShaderChunk[ "alphatest_fragment" ],
				THREE.ShaderChunk[ "specularmap_fragment" ],

			"	ReflectedLight reflectedLight;",
			"	reflectedLight.directDiffuse = vec3( 0.0 );",
			"	reflectedLight.directSpecular = vec3( 0.0 );",
			"	reflectedLight.indirectDiffuse = diffuseColor.rgb;",
			"	reflectedLight.indirectSpecular = vec3( 0.0 );",

				THREE.ShaderChunk[ "aomap_fragment" ],

			"	vec3 outgoingLight = reflectedLight.indirectDiffuse;",

				THREE.ShaderChunk[ "envmap_fragment" ],
				THREE.ShaderChunk[ "linear_to_gamma_fragment" ],
				THREE.ShaderChunk[ "fog_fragment" ],

			"	gl_FragColor = vec4( outgoingLight, diffuseColor.a );",

			"}"

		].join( "\n" )

	},

	'lambert': {

		uniforms: THREE.UniformsUtils.merge( [

			THREE.UniformsLib[ "common" ],
			THREE.UniformsLib[ "aomap" ],
			THREE.UniformsLib[ "lightmap" ],
			THREE.UniformsLib[ "emissivemap" ],
			THREE.UniformsLib[ "fog" ],
			THREE.UniformsLib[ "ambient" ],
			THREE.UniformsLib[ "lights" ],

			{
				"emissive" : { type: "c", value: new THREE.Color( 0x000000 ) }
			}

		] ),

		vertexShader: [

			"#define LAMBERT",

			"varying vec3 vLightFront;",

			"#ifdef DOUBLE_SIDED",

			"	varying vec3 vLightBack;",

			"#endif",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "uv_pars_vertex" ],
			THREE.ShaderChunk[ "uv2_pars_vertex" ],
			THREE.ShaderChunk[ "envmap_pars_vertex" ],
			THREE.ShaderChunk[ "bsdfs" ],
			THREE.ShaderChunk[ "lights_pars" ],
			THREE.ShaderChunk[ "color_pars_vertex" ],
			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],
			THREE.ShaderChunk[ "skinning_pars_vertex" ],
			THREE.ShaderChunk[ "shadowmap_pars_vertex" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {",

				THREE.ShaderChunk[ "uv_vertex" ],
				THREE.ShaderChunk[ "uv2_vertex" ],
				THREE.ShaderChunk[ "color_vertex" ],

				THREE.ShaderChunk[ "beginnormal_vertex" ],
				THREE.ShaderChunk[ "morphnormal_vertex" ],
				THREE.ShaderChunk[ "skinbase_vertex" ],
				THREE.ShaderChunk[ "skinnormal_vertex" ],
				THREE.ShaderChunk[ "defaultnormal_vertex" ],

				THREE.ShaderChunk[ "begin_vertex" ],
				THREE.ShaderChunk[ "morphtarget_vertex" ],
				THREE.ShaderChunk[ "skinning_vertex" ],
				THREE.ShaderChunk[ "project_vertex" ],
				THREE.ShaderChunk[ "logdepthbuf_vertex" ],

				THREE.ShaderChunk[ "worldpos_vertex" ],
				THREE.ShaderChunk[ "envmap_vertex" ],
				THREE.ShaderChunk[ "lights_lambert_vertex" ],
				THREE.ShaderChunk[ "shadowmap_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			"uniform vec3 diffuse;",
			"uniform vec3 emissive;",
			"uniform float opacity;",

			"varying vec3 vLightFront;",

			"#ifdef DOUBLE_SIDED",

			"	varying vec3 vLightBack;",

			"#endif",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "color_pars_fragment" ],
			THREE.ShaderChunk[ "uv_pars_fragment" ],
			THREE.ShaderChunk[ "uv2_pars_fragment" ],
			THREE.ShaderChunk[ "map_pars_fragment" ],
			THREE.ShaderChunk[ "alphamap_pars_fragment" ],
			THREE.ShaderChunk[ "aomap_pars_fragment" ],
			THREE.ShaderChunk[ "lightmap_pars_fragment" ],
			THREE.ShaderChunk[ "emissivemap_pars_fragment" ],
			THREE.ShaderChunk[ "envmap_pars_fragment" ],
			THREE.ShaderChunk[ "bsdfs" ],
			THREE.ShaderChunk[ "ambient_pars" ],
			THREE.ShaderChunk[ "lights_pars" ],
			THREE.ShaderChunk[ "fog_pars_fragment" ],
			THREE.ShaderChunk[ "shadowmap_pars_fragment" ],
			THREE.ShaderChunk[ "shadowmask_pars_fragment" ],
			THREE.ShaderChunk[ "specularmap_pars_fragment" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"void main() {",

			"	vec4 diffuseColor = vec4( diffuse, opacity );",
			"	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );",
			"	vec3 totalEmissiveLight = emissive;",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],
				THREE.ShaderChunk[ "map_fragment" ],
				THREE.ShaderChunk[ "color_fragment" ],
				THREE.ShaderChunk[ "alphamap_fragment" ],
				THREE.ShaderChunk[ "alphatest_fragment" ],
				THREE.ShaderChunk[ "specularmap_fragment" ],
				THREE.ShaderChunk[ "emissivemap_fragment" ],

				// accumulation
			"	reflectedLight.indirectDiffuse = getAmbientLightIrradiance( ambientLightColor );",

				THREE.ShaderChunk[ "lightmap_fragment" ],

			"	reflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );",

			"	#ifdef DOUBLE_SIDED",

			"		reflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;",

			"	#else",

			"		reflectedLight.directDiffuse = vLightFront;",

			"	#endif",

			"	reflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();",

				// modulation
				THREE.ShaderChunk[ "aomap_fragment" ],

			"	vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveLight;",

				THREE.ShaderChunk[ "envmap_fragment" ],

				THREE.ShaderChunk[ "linear_to_gamma_fragment" ],

				THREE.ShaderChunk[ "fog_fragment" ],

			"	gl_FragColor = vec4( outgoingLight, diffuseColor.a );",

			"}"

		].join( "\n" )

	},

	'phong': {

		uniforms: THREE.UniformsUtils.merge( [

			THREE.UniformsLib[ "common" ],
			THREE.UniformsLib[ "aomap" ],
			THREE.UniformsLib[ "lightmap" ],
			THREE.UniformsLib[ "emissivemap" ],
			THREE.UniformsLib[ "bumpmap" ],
			THREE.UniformsLib[ "normalmap" ],
			THREE.UniformsLib[ "displacementmap" ],
			THREE.UniformsLib[ "fog" ],
			THREE.UniformsLib[ "ambient" ],
			THREE.UniformsLib[ "lights" ],

			{
				"emissive" : { type: "c", value: new THREE.Color( 0x000000 ) },
				"specular" : { type: "c", value: new THREE.Color( 0x111111 ) },
				"shininess": { type: "f", value: 30 }
			}

		] ),

		vertexShader: [

			"#define PHONG",

			"varying vec3 vViewPosition;",

			"#ifndef FLAT_SHADED",

			"	varying vec3 vNormal;",

			"#endif",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "uv_pars_vertex" ],
			THREE.ShaderChunk[ "uv2_pars_vertex" ],
			THREE.ShaderChunk[ "displacementmap_pars_vertex" ],
			THREE.ShaderChunk[ "envmap_pars_vertex" ],
			THREE.ShaderChunk[ "lights_phong_pars_vertex" ],
			THREE.ShaderChunk[ "color_pars_vertex" ],
			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],
			THREE.ShaderChunk[ "skinning_pars_vertex" ],
			THREE.ShaderChunk[ "shadowmap_pars_vertex" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {",

				THREE.ShaderChunk[ "uv_vertex" ],
				THREE.ShaderChunk[ "uv2_vertex" ],
				THREE.ShaderChunk[ "color_vertex" ],

				THREE.ShaderChunk[ "beginnormal_vertex" ],
				THREE.ShaderChunk[ "morphnormal_vertex" ],
				THREE.ShaderChunk[ "skinbase_vertex" ],
				THREE.ShaderChunk[ "skinnormal_vertex" ],
				THREE.ShaderChunk[ "defaultnormal_vertex" ],

			"#ifndef FLAT_SHADED", // Normal computed with derivatives when FLAT_SHADED

			"	vNormal = normalize( transformedNormal );",

			"#endif",

				THREE.ShaderChunk[ "begin_vertex" ],
				THREE.ShaderChunk[ "displacementmap_vertex" ],
				THREE.ShaderChunk[ "morphtarget_vertex" ],
				THREE.ShaderChunk[ "skinning_vertex" ],
				THREE.ShaderChunk[ "project_vertex" ],
				THREE.ShaderChunk[ "logdepthbuf_vertex" ],

			"	vViewPosition = - mvPosition.xyz;",

				THREE.ShaderChunk[ "worldpos_vertex" ],
				THREE.ShaderChunk[ "envmap_vertex" ],
				THREE.ShaderChunk[ "lights_phong_vertex" ],
				THREE.ShaderChunk[ "shadowmap_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			"#define PHONG",

			"uniform vec3 diffuse;",
			"uniform vec3 emissive;",
			"uniform vec3 specular;",
			"uniform float shininess;",
			"uniform float opacity;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "color_pars_fragment" ],
			THREE.ShaderChunk[ "uv_pars_fragment" ],
			THREE.ShaderChunk[ "uv2_pars_fragment" ],
			THREE.ShaderChunk[ "map_pars_fragment" ],
			THREE.ShaderChunk[ "alphamap_pars_fragment" ],
			THREE.ShaderChunk[ "aomap_pars_fragment" ],
			THREE.ShaderChunk[ "lightmap_pars_fragment" ],
			THREE.ShaderChunk[ "emissivemap_pars_fragment" ],
			THREE.ShaderChunk[ "envmap_pars_fragment" ],
			THREE.ShaderChunk[ "fog_pars_fragment" ],
			THREE.ShaderChunk[ "bsdfs" ],
			THREE.ShaderChunk[ "ambient_pars" ],
			THREE.ShaderChunk[ "lights_pars" ],
			THREE.ShaderChunk[ "lights_phong_pars_fragment" ],
			THREE.ShaderChunk[ "shadowmap_pars_fragment" ],
			THREE.ShaderChunk[ "bumpmap_pars_fragment" ],
			THREE.ShaderChunk[ "normalmap_pars_fragment" ],
			THREE.ShaderChunk[ "specularmap_pars_fragment" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"void main() {",

			"	vec4 diffuseColor = vec4( diffuse, opacity );",
			"	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );",
			"	vec3 totalEmissiveLight = emissive;",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],
				THREE.ShaderChunk[ "map_fragment" ],
				THREE.ShaderChunk[ "color_fragment" ],
				THREE.ShaderChunk[ "alphamap_fragment" ],
				THREE.ShaderChunk[ "alphatest_fragment" ],
				THREE.ShaderChunk[ "specularmap_fragment" ],
				THREE.ShaderChunk[ "normal_fragment" ],
				THREE.ShaderChunk[ "emissivemap_fragment" ],

				// accumulation
				THREE.ShaderChunk[ "lights_phong_fragment" ],
				THREE.ShaderChunk[ "lights_template" ],

				// modulation
				THREE.ShaderChunk[ "aomap_fragment" ],

				"vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveLight;",

				THREE.ShaderChunk[ "envmap_fragment" ],
				THREE.ShaderChunk[ "linear_to_gamma_fragment" ],

				THREE.ShaderChunk[ "fog_fragment" ],

			"	gl_FragColor = vec4( outgoingLight, diffuseColor.a );",

			"}"

		].join( "\n" )

	},

	'standard': {

		uniforms: THREE.UniformsUtils.merge( [

			THREE.UniformsLib[ "common" ],
			THREE.UniformsLib[ "aomap" ],
			THREE.UniformsLib[ "lightmap" ],
			THREE.UniformsLib[ "emissivemap" ],
			THREE.UniformsLib[ "bumpmap" ],
			THREE.UniformsLib[ "normalmap" ],
			THREE.UniformsLib[ "displacementmap" ],
			THREE.UniformsLib[ "roughnessmap" ],
			THREE.UniformsLib[ "metalnessmap" ],
			THREE.UniformsLib[ "fog" ],
			THREE.UniformsLib[ "ambient" ],
			THREE.UniformsLib[ "lights" ],

			{
				"emissive" : { type: "c", value: new THREE.Color( 0x000000 ) },
				"roughness": { type: "f", value: 0.5 },
				"metalness": { type: "f", value: 0 },
				"envMapIntensity" : { type: "f", value: 1 } // temporary
			}

		] ),

		vertexShader: [

			"#define STANDARD",

			"varying vec3 vViewPosition;",

			"#ifndef FLAT_SHADED",

			"	varying vec3 vNormal;",

			"#endif",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "uv_pars_vertex" ],
			THREE.ShaderChunk[ "uv2_pars_vertex" ],
			THREE.ShaderChunk[ "displacementmap_pars_vertex" ],
			THREE.ShaderChunk[ "envmap_pars_vertex" ],
			THREE.ShaderChunk[ "color_pars_vertex" ],
			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],
			THREE.ShaderChunk[ "skinning_pars_vertex" ],
			THREE.ShaderChunk[ "shadowmap_pars_vertex" ],
			THREE.ShaderChunk[ "specularmap_pars_fragment" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {", // STANDARD

				THREE.ShaderChunk[ "uv_vertex" ],
				THREE.ShaderChunk[ "uv2_vertex" ],
				THREE.ShaderChunk[ "color_vertex" ],

				THREE.ShaderChunk[ "beginnormal_vertex" ],
				THREE.ShaderChunk[ "morphnormal_vertex" ],
				THREE.ShaderChunk[ "skinbase_vertex" ],
				THREE.ShaderChunk[ "skinnormal_vertex" ],
				THREE.ShaderChunk[ "defaultnormal_vertex" ],

			"#ifndef FLAT_SHADED", // Normal computed with derivatives when FLAT_SHADED

			"	vNormal = normalize( transformedNormal );",

			"#endif",

				THREE.ShaderChunk[ "begin_vertex" ],
				THREE.ShaderChunk[ "displacementmap_vertex" ],
				THREE.ShaderChunk[ "morphtarget_vertex" ],
				THREE.ShaderChunk[ "skinning_vertex" ],
				THREE.ShaderChunk[ "project_vertex" ],
				THREE.ShaderChunk[ "logdepthbuf_vertex" ],

			"	vViewPosition = - mvPosition.xyz;",

				THREE.ShaderChunk[ "worldpos_vertex" ],
				THREE.ShaderChunk[ "envmap_vertex" ],
				THREE.ShaderChunk[ "shadowmap_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			"#define STANDARD",

			"uniform vec3 diffuse;",
			"uniform vec3 emissive;",
			"uniform float roughness;",
			"uniform float metalness;",
			"uniform float opacity;",

			"uniform float envMapIntensity;", // temporary

			"varying vec3 vViewPosition;",

			"#ifndef FLAT_SHADED",

			"	varying vec3 vNormal;",

			"#endif",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "color_pars_fragment" ],
			THREE.ShaderChunk[ "uv_pars_fragment" ],
			THREE.ShaderChunk[ "uv2_pars_fragment" ],
			THREE.ShaderChunk[ "map_pars_fragment" ],
			THREE.ShaderChunk[ "alphamap_pars_fragment" ],
			THREE.ShaderChunk[ "aomap_pars_fragment" ],
			THREE.ShaderChunk[ "lightmap_pars_fragment" ],
			THREE.ShaderChunk[ "emissivemap_pars_fragment" ],
			THREE.ShaderChunk[ "envmap_pars_fragment" ],
			THREE.ShaderChunk[ "fog_pars_fragment" ],
			THREE.ShaderChunk[ "bsdfs" ],
			THREE.ShaderChunk[ "ambient_pars" ],
			THREE.ShaderChunk[ "lights_pars" ],
			THREE.ShaderChunk[ "lights_standard_pars_fragment" ],
			THREE.ShaderChunk[ "shadowmap_pars_fragment" ],
			THREE.ShaderChunk[ "bumpmap_pars_fragment" ],
			THREE.ShaderChunk[ "normalmap_pars_fragment" ],
			THREE.ShaderChunk[ "roughnessmap_pars_fragment" ],
			THREE.ShaderChunk[ "metalnessmap_pars_fragment" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"void main() {",

			"	vec4 diffuseColor = vec4( diffuse, opacity );",
			"	ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );",
			"	vec3 totalEmissiveLight = emissive;",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],
				THREE.ShaderChunk[ "map_fragment" ],
				THREE.ShaderChunk[ "color_fragment" ],
				THREE.ShaderChunk[ "alphamap_fragment" ],
				THREE.ShaderChunk[ "alphatest_fragment" ],
				THREE.ShaderChunk[ "specularmap_fragment" ],
				THREE.ShaderChunk[ "roughnessmap_fragment" ],
				THREE.ShaderChunk[ "metalnessmap_fragment" ],
				THREE.ShaderChunk[ "normal_fragment" ],
				THREE.ShaderChunk[ "emissivemap_fragment" ],

				// accumulation
				THREE.ShaderChunk[ "lights_standard_fragment" ],
				THREE.ShaderChunk[ "lights_template" ],

				// modulation
				THREE.ShaderChunk[ "aomap_fragment" ],

				"vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveLight;",

				THREE.ShaderChunk[ "linear_to_gamma_fragment" ],

				THREE.ShaderChunk[ "fog_fragment" ],

			"	gl_FragColor = vec4( outgoingLight, diffuseColor.a );",

			"}"

		].join( "\n" )

	},

	'points': {

		uniforms: THREE.UniformsUtils.merge( [

			THREE.UniformsLib[ "points" ],
			THREE.UniformsLib[ "fog" ]

		] ),

		vertexShader: [

			"uniform float size;",
			"uniform float scale;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "color_pars_vertex" ],
			THREE.ShaderChunk[ "shadowmap_pars_vertex" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {",

				THREE.ShaderChunk[ "color_vertex" ],
				THREE.ShaderChunk[ "begin_vertex" ],
				THREE.ShaderChunk[ "project_vertex" ],

			"	#ifdef USE_SIZEATTENUATION",
			"		gl_PointSize = size * ( scale / - mvPosition.z );",
			"	#else",
			"		gl_PointSize = size;",
			"	#endif",

				THREE.ShaderChunk[ "logdepthbuf_vertex" ],
				THREE.ShaderChunk[ "worldpos_vertex" ],
				THREE.ShaderChunk[ "shadowmap_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			"uniform vec3 diffuse;",
			"uniform float opacity;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "color_pars_fragment" ],
			THREE.ShaderChunk[ "map_particle_pars_fragment" ],
			THREE.ShaderChunk[ "fog_pars_fragment" ],
			THREE.ShaderChunk[ "shadowmap_pars_fragment" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"void main() {",

			"	vec3 outgoingLight = vec3( 0.0 );",
			"	vec4 diffuseColor = vec4( diffuse, opacity );",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],
				THREE.ShaderChunk[ "map_particle_fragment" ],
				THREE.ShaderChunk[ "color_fragment" ],
				THREE.ShaderChunk[ "alphatest_fragment" ],

			"	outgoingLight = diffuseColor.rgb;",

				THREE.ShaderChunk[ "fog_fragment" ],

			"	gl_FragColor = vec4( outgoingLight, diffuseColor.a );",

			"}"

		].join( "\n" )

	},

	'dashed': {

		uniforms: THREE.UniformsUtils.merge( [

			THREE.UniformsLib[ "common" ],
			THREE.UniformsLib[ "fog" ],

			{
				"scale"    : { type: "f", value: 1 },
				"dashSize" : { type: "f", value: 1 },
				"totalSize": { type: "f", value: 2 }
			}

		] ),

		vertexShader: [

			"uniform float scale;",
			"attribute float lineDistance;",

			"varying float vLineDistance;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "color_pars_vertex" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {",

				THREE.ShaderChunk[ "color_vertex" ],

			"	vLineDistance = scale * lineDistance;",

			"	vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );",
			"	gl_Position = projectionMatrix * mvPosition;",

				THREE.ShaderChunk[ "logdepthbuf_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			"uniform vec3 diffuse;",
			"uniform float opacity;",

			"uniform float dashSize;",
			"uniform float totalSize;",

			"varying float vLineDistance;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "color_pars_fragment" ],
			THREE.ShaderChunk[ "fog_pars_fragment" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"void main() {",

			"	if ( mod( vLineDistance, totalSize ) > dashSize ) {",

			"		discard;",

			"	}",

			"	vec3 outgoingLight = vec3( 0.0 );",
			"	vec4 diffuseColor = vec4( diffuse, opacity );",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],
				THREE.ShaderChunk[ "color_fragment" ],

			"	outgoingLight = diffuseColor.rgb;", // simple shader

				THREE.ShaderChunk[ "fog_fragment" ],

			"	gl_FragColor = vec4( outgoingLight, diffuseColor.a );",

			"}"

		].join( "\n" )

	},

	'depth': {

		uniforms: {

			"mNear": { type: "f", value: 1.0 },
			"mFar" : { type: "f", value: 2000.0 },
			"opacity" : { type: "f", value: 1.0 }

		},

		vertexShader: [

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {",

				THREE.ShaderChunk[ "begin_vertex" ],
				THREE.ShaderChunk[ "morphtarget_vertex" ],
				THREE.ShaderChunk[ "project_vertex" ],
				THREE.ShaderChunk[ "logdepthbuf_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			"uniform float mNear;",
			"uniform float mFar;",
			"uniform float opacity;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"void main() {",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],

			"	#ifdef USE_LOGDEPTHBUF_EXT",

			"		float depth = gl_FragDepthEXT / gl_FragCoord.w;",

			"	#else",

			"		float depth = gl_FragCoord.z / gl_FragCoord.w;",

			"	#endif",

			"	float color = 1.0 - smoothstep( mNear, mFar, depth );",
			"	gl_FragColor = vec4( vec3( color ), opacity );",

			"}"

		].join( "\n" )

	},

	'normal': {

		uniforms: {

			"opacity" : { type: "f", value: 1.0 }

		},

		vertexShader: [

			"varying vec3 vNormal;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {",

			"	vNormal = normalize( normalMatrix * normal );",

				THREE.ShaderChunk[ "begin_vertex" ],
				THREE.ShaderChunk[ "morphtarget_vertex" ],
				THREE.ShaderChunk[ "project_vertex" ],
				THREE.ShaderChunk[ "logdepthbuf_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			"uniform float opacity;",
			"varying vec3 vNormal;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"void main() {",

			"	gl_FragColor = vec4( 0.5 * normalize( vNormal ) + 0.5, opacity );",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],

			"}"

		].join( "\n" )

	},

	/* -------------------------------------------------------------------------
	//	Cube map shader
	 ------------------------------------------------------------------------- */

	'cube': {

		uniforms: {
			"tCube": { type: "t", value: null },
			"tFlip": { type: "f", value: - 1 }
		},

		vertexShader: [

			"varying vec3 vWorldPosition;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {",

			"	vWorldPosition = transformDirection( position, modelMatrix );",

			"	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",

				THREE.ShaderChunk[ "logdepthbuf_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			"uniform samplerCube tCube;",
			"uniform float tFlip;",

			"varying vec3 vWorldPosition;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"void main() {",

			"	gl_FragColor = textureCube( tCube, vec3( tFlip * vWorldPosition.x, vWorldPosition.yz ) );",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],

			"}"

		].join( "\n" )

	},

	/* -------------------------------------------------------------------------
	//	Cube map shader
	 ------------------------------------------------------------------------- */

	'equirect': {

		uniforms: {
			"tEquirect": { type: "t", value: null },
			"tFlip": { type: "f", value: - 1 }
		},

		vertexShader: [

			"varying vec3 vWorldPosition;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {",

			"	vWorldPosition = transformDirection( position, modelMatrix );",

			"	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",

				THREE.ShaderChunk[ "logdepthbuf_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			"uniform sampler2D tEquirect;",
			"uniform float tFlip;",

			"varying vec3 vWorldPosition;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"void main() {",

				// "	gl_FragColor = textureCube( tCube, vec3( tFlip * vWorldPosition.x, vWorldPosition.yz ) );",
				"vec3 direction = normalize( vWorldPosition );",
				"vec2 sampleUV;",
				"sampleUV.y = saturate( tFlip * direction.y * -0.5 + 0.5 );",
				"sampleUV.x = atan( direction.z, direction.x ) * RECIPROCAL_PI2 + 0.5;",
				"gl_FragColor = texture2D( tEquirect, sampleUV );",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],

			"}"

		].join( "\n" )

	},

	/* Depth encoding into RGBA texture
	 *
	 * based on SpiderGL shadow map example
	 * http://spidergl.org/example.php?id=6
	 *
	 * originally from
	 * http://www.gamedev.net/topic/442138-packing-a-float-into-a-a8r8g8b8-texture-shader/page__whichpage__1%25EF%25BF%25BD
	 *
	 * see also
	 * http://aras-p.info/blog/2009/07/30/encoding-floats-to-rgba-the-final/
	 */

	'depthRGBA': {

		uniforms: {},

		vertexShader: [

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],
			THREE.ShaderChunk[ "skinning_pars_vertex" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_vertex" ],

			"void main() {",

				THREE.ShaderChunk[ "skinbase_vertex" ],

				THREE.ShaderChunk[ "begin_vertex" ],
				THREE.ShaderChunk[ "morphtarget_vertex" ],
				THREE.ShaderChunk[ "skinning_vertex" ],
				THREE.ShaderChunk[ "project_vertex" ],
				THREE.ShaderChunk[ "logdepthbuf_vertex" ],

			"}"

		].join( "\n" ),

		fragmentShader: [

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],

			"vec4 pack_depth( const in float depth ) {",

			"	const vec4 bit_shift = vec4( 256.0 * 256.0 * 256.0, 256.0 * 256.0, 256.0, 1.0 );",
			"	const vec4 bit_mask = vec4( 0.0, 1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0 );",
			"	vec4 res = mod( depth * bit_shift * vec4( 255 ), vec4( 256 ) ) / vec4( 255 );",
			"	res -= res.xxyz * bit_mask;",
			"	return res;",

			"}",

			"void main() {",

				THREE.ShaderChunk[ "logdepthbuf_fragment" ],

			"	#ifdef USE_LOGDEPTHBUF_EXT",

			"		gl_FragData[ 0 ] = pack_depth( gl_FragDepthEXT );",

			"	#else",

			"		gl_FragData[ 0 ] = pack_depth( gl_FragCoord.z );",

			"	#endif",

				//"gl_FragData[ 0 ] = pack_depth( gl_FragCoord.z / gl_FragCoord.w );",
				//"float z = ( ( gl_FragCoord.z / gl_FragCoord.w ) - 3.0 ) / ( 4000.0 - 3.0 );",
				//"gl_FragData[ 0 ] = pack_depth( z );",
				//"gl_FragData[ 0 ] = vec4( z, z, z, 1.0 );",

			"}"

		].join( "\n" )

	},


	'distanceRGBA': {

		uniforms: {

			"lightPos": { type: "v3", value: new THREE.Vector3( 0, 0, 0 ) }

		},

		vertexShader: [

			"varying vec4 vWorldPosition;",

			THREE.ShaderChunk[ "common" ],
			THREE.ShaderChunk[ "morphtarget_pars_vertex" ],
			THREE.ShaderChunk[ "skinning_pars_vertex" ],

			"void main() {",

				THREE.ShaderChunk[ "skinbase_vertex" ],
				THREE.ShaderChunk[ "begin_vertex" ],
				THREE.ShaderChunk[ "morphtarget_vertex" ],
				THREE.ShaderChunk[ "skinning_vertex" ],
				THREE.ShaderChunk[ "project_vertex" ],
				THREE.ShaderChunk[ "worldpos_vertex" ],

				"vWorldPosition = worldPosition;",

			"}"

		].join( "\n" ),

		fragmentShader: [

			"uniform vec3 lightPos;",
			"varying vec4 vWorldPosition;",

			THREE.ShaderChunk[ "common" ],

			"vec4 pack1K ( float depth ) {",

			"	depth /= 1000.0;",
			"	const vec4 bitSh = vec4( 256.0 * 256.0 * 256.0, 256.0 * 256.0, 256.0, 1.0 );",
			"	const vec4 bitMsk = vec4( 0.0, 1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0 );",
			"	vec4 res = mod( depth * bitSh * vec4( 255 ), vec4( 256 ) ) / vec4( 255 );",
			"	res -= res.xxyz * bitMsk;",
			"	return res; ",

			"}",

			"float unpack1K ( vec4 color ) {",

			"	const vec4 bitSh = vec4( 1.0 / ( 256.0 * 256.0 * 256.0 ), 1.0 / ( 256.0 * 256.0 ), 1.0 / 256.0, 1.0 );",
			"	return dot( color, bitSh ) * 1000.0;",

			"}",

			"void main () {",

			"	gl_FragColor = pack1K( length( vWorldPosition.xyz - lightPos.xyz ) );",

			"}"

		].join( "\n" )

	}

};

// File:src/renderers/WebGLRenderer.js

/**
 * @author supereggbert / http://www.paulbrunt.co.uk/
 * @author mrdoob / http://mrdoob.com/
 * @author alteredq / http://alteredqualia.com/
 * @author szimek / https://github.com/szimek/
 */

THREE.WebGLRenderer = function ( parameters ) {

	console.log( 'THREE.WebGLRenderer', THREE.REVISION );

	parameters = parameters || {};

	var _canvas = parameters.canvas !== undefined ? parameters.canvas : document.createElement( 'canvas' ),
	_context = parameters.context !== undefined ? parameters.context : null,

	_alpha = parameters.alpha !== undefined ? parameters.alpha : false,
	_depth = parameters.depth !== undefined ? parameters.depth : true,
	_stencil = parameters.stencil !== undefined ? parameters.stencil : true,
	_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
	_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
	_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false;

	var lights = [];

	var opaqueObjects = [];
	var opaqueObjectsLastIndex = - 1;
	var transparentObjects = [];
	var transparentObjectsLastIndex = - 1;

	var morphInfluences = new Float32Array( 8 );

	var sprites = [];
	var lensFlares = [];

	// public properties

	this.domElement = _canvas;
	this.context = null;

	// clearing

	this.autoClear = true;
	this.autoClearColor = true;
	this.autoClearDepth = true;
	this.autoClearStencil = true;

	// scene graph

	this.sortObjects = true;

	// physically based shading

	this.gammaFactor = 2.0;	// for backwards compatibility
	this.gammaInput = false;
	this.gammaOutput = false;

	// morphs

	this.maxMorphTargets = 8;
	this.maxMorphNormals = 4;

	// flags

	this.autoScaleCubemaps = true;

	// internal properties

	var _this = this,

	// internal state cache

	_currentProgram = null,
	_currentRenderTarget = null,
	_currentFramebuffer = null,
	_currentMaterialId = - 1,
	_currentGeometryProgram = '',
	_currentCamera = null,

	_currentScissor = new THREE.Vector4(),
	_currentScissorTest = null,

	_currentViewport = new THREE.Vector4(),

	//

	_usedTextureUnits = 0,

	//

	_clearColor = new THREE.Color( 0x000000 ),
	_clearAlpha = 0,

	_width = _canvas.width,
	_height = _canvas.height,

	_pixelRatio = 1,

	_scissor = new THREE.Vector4( 0, 0, _width, _height ),
	_scissorTest = false,

	_viewport = new THREE.Vector4( 0, 0, _width, _height ),

	// frustum

	_frustum = new THREE.Frustum(),

	// camera matrices cache

	_projScreenMatrix = new THREE.Matrix4(),

	_vector3 = new THREE.Vector3(),

	// light arrays cache

	_lights = {

		hash: '',

		ambient: [ 0, 0, 0 ],
		directional: [],
		directionalShadowMap: [],
		directionalShadowMatrix: [],
		spot: [],
		spotShadowMap: [],
		spotShadowMatrix: [],
		point: [],
		pointShadowMap: [],
		pointShadowMatrix: [],
		hemi: [],

		shadows: [],
		shadowsPointLight: 0

	},

	// info

	_infoMemory = {

		geometries: 0,
		textures: 0

	},

	_infoRender = {

		calls: 0,
		vertices: 0,
		faces: 0,
		points: 0

	};

	this.info = {

		render: _infoRender,
		memory: _infoMemory,
		programs: null

	};


	// initialize

	var _gl;

	try {

		var attributes = {
			alpha: _alpha,
			depth: _depth,
			stencil: _stencil,
			antialias: _antialias,
			premultipliedAlpha: _premultipliedAlpha,
			preserveDrawingBuffer: _preserveDrawingBuffer
		};

		_gl = _context || _canvas.getContext( 'webgl', attributes ) || _canvas.getContext( 'experimental-webgl', attributes );

		if ( _gl === null ) {

			if ( _canvas.getContext( 'webgl' ) !== null ) {

				throw 'Error creating WebGL context with your selected attributes.';

			} else {

				throw 'Error creating WebGL context.';

			}

		}

		_canvas.addEventListener( 'webglcontextlost', onContextLost, false );

	} catch ( error ) {

		console.error( 'THREE.WebGLRenderer: ' + error );

	}

	var extensions = new THREE.WebGLExtensions( _gl );

	extensions.get( 'OES_texture_float' );
	extensions.get( 'OES_texture_float_linear' );
	extensions.get( 'OES_texture_half_float' );
	extensions.get( 'OES_texture_half_float_linear' );
	extensions.get( 'OES_standard_derivatives' );
	extensions.get( 'ANGLE_instanced_arrays' );

	if ( extensions.get( 'OES_element_index_uint' ) ) {

		THREE.BufferGeometry.MaxIndex = 4294967296;

	}

	var capabilities = new THREE.WebGLCapabilities( _gl, extensions, parameters );

	var state = new THREE.WebGLState( _gl, extensions, paramThreeToGL );
	var properties = new THREE.WebGLProperties();
	var objects = new THREE.WebGLObjects( _gl, properties, this.info );
	var programCache = new THREE.WebGLPrograms( this, capabilities );
	var lightCache = new THREE.WebGLLights();

	this.info.programs = programCache.programs;

	var bufferRenderer = new THREE.WebGLBufferRenderer( _gl, extensions, _infoRender );
	var indexedBufferRenderer = new THREE.WebGLIndexedBufferRenderer( _gl, extensions, _infoRender );

	//

	function getTargetPixelRatio() {

		return _currentRenderTarget === null ? _pixelRatio : 1;

	}

	function glClearColor( r, g, b, a ) {

		if ( _premultipliedAlpha === true ) {

			r *= a; g *= a; b *= a;

		}

		state.clearColor( r, g, b, a );

	}

	function setDefaultGLState() {

		state.init();

		state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ) );
		state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ) );

		glClearColor( _clearColor.r, _clearColor.g, _clearColor.b, _clearAlpha );

	}

	function resetGLState() {

		_currentProgram = null;
		_currentCamera = null;

		_currentGeometryProgram = '';
		_currentMaterialId = - 1;

		state.reset();

	}

	setDefaultGLState();

	this.context = _gl;
	this.capabilities = capabilities;
	this.extensions = extensions;
	this.properties = properties;
	this.state = state;

	// shadow map

	var shadowMap = new THREE.WebGLShadowMap( this, _lights, objects );

	this.shadowMap = shadowMap;


	// Plugins

	var spritePlugin = new THREE.SpritePlugin( this, sprites );
	var lensFlarePlugin = new THREE.LensFlarePlugin( this, lensFlares );

	// API

	this.getContext = function () {

		return _gl;

	};

	this.getContextAttributes = function () {

		return _gl.getContextAttributes();

	};

	this.forceContextLoss = function () {

		extensions.get( 'WEBGL_lose_context' ).loseContext();

	};

	this.getMaxAnisotropy = ( function () {

		var value;

		return function getMaxAnisotropy() {

			if ( value !== undefined ) return value;

			var extension = extensions.get( 'EXT_texture_filter_anisotropic' );

			if ( extension !== null ) {

				value = _gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );

			} else {

				value = 0;

			}

			return value;

		};

	} )();

	this.getPrecision = function () {

		return capabilities.precision;

	};

	this.getPixelRatio = function () {

		return _pixelRatio;

	};

	this.setPixelRatio = function ( value ) {

		if ( value === undefined ) return;

		_pixelRatio = value;

		this.setSize( _viewport.z, _viewport.w, false );

	};

	this.getSize = function () {

		return {
			width: _width,
			height: _height
		};

	};

	this.setSize = function ( width, height, updateStyle ) {

		_width = width;
		_height = height;

		_canvas.width = width * _pixelRatio;
		_canvas.height = height * _pixelRatio;

		if ( updateStyle !== false ) {

			_canvas.style.width = width + 'px';
			_canvas.style.height = height + 'px';

		}

		this.setViewport( 0, 0, width, height );

	};

	this.setViewport = function ( x, y, width, height ) {

		state.viewport( _viewport.set( x, y, width, height ) );

	};

	this.setScissor = function ( x, y, width, height ) {

		state.scissor( _scissor.set( x, y, width, height ) );

	};

	this.setScissorTest = function ( boolean ) {

		state.setScissorTest( _scissorTest = boolean );

	};

	// Clearing

	this.getClearColor = function () {

		return _clearColor;

	};

	this.setClearColor = function ( color, alpha ) {

		_clearColor.set( color );

		_clearAlpha = alpha !== undefined ? alpha : 1;

		glClearColor( _clearColor.r, _clearColor.g, _clearColor.b, _clearAlpha );

	};

	this.getClearAlpha = function () {

		return _clearAlpha;

	};

	this.setClearAlpha = function ( alpha ) {

		_clearAlpha = alpha;

		glClearColor( _clearColor.r, _clearColor.g, _clearColor.b, _clearAlpha );

	};

	this.clear = function ( color, depth, stencil ) {

		var bits = 0;

		if ( color === undefined || color ) bits |= _gl.COLOR_BUFFER_BIT;
		if ( depth === undefined || depth ) bits |= _gl.DEPTH_BUFFER_BIT;
		if ( stencil === undefined || stencil ) bits |= _gl.STENCIL_BUFFER_BIT;

		_gl.clear( bits );

	};

	this.clearColor = function () {

		this.clear( true, false, false );

	};

	this.clearDepth = function () {

		this.clear( false, true, false );

	};

	this.clearStencil = function () {

		this.clear( false, false, true );

	};

	this.clearTarget = function ( renderTarget, color, depth, stencil ) {

		this.setRenderTarget( renderTarget );
		this.clear( color, depth, stencil );

	};

	// Reset

	this.resetGLState = resetGLState;

	this.dispose = function() {

		_canvas.removeEventListener( 'webglcontextlost', onContextLost, false );

	};

	// Events

	function onContextLost( event ) {

		event.preventDefault();

		resetGLState();
		setDefaultGLState();

		properties.clear();

	}

	function onTextureDispose( event ) {

		var texture = event.target;

		texture.removeEventListener( 'dispose', onTextureDispose );

		deallocateTexture( texture );

		_infoMemory.textures --;


	}

	function onRenderTargetDispose( event ) {

		var renderTarget = event.target;

		renderTarget.removeEventListener( 'dispose', onRenderTargetDispose );

		deallocateRenderTarget( renderTarget );

		_infoMemory.textures --;

	}

	function onMaterialDispose( event ) {

		var material = event.target;

		material.removeEventListener( 'dispose', onMaterialDispose );

		deallocateMaterial( material );

	}

	// Buffer deallocation

	function deallocateTexture( texture ) {

		var textureProperties = properties.get( texture );

		if ( texture.image && textureProperties.__image__webglTextureCube ) {

			// cube texture

			_gl.deleteTexture( textureProperties.__image__webglTextureCube );

		} else {

			// 2D texture

			if ( textureProperties.__webglInit === undefined ) return;

			_gl.deleteTexture( textureProperties.__webglTexture );

		}

		// remove all webgl properties
		properties.delete( texture );

	}

	function deallocateRenderTarget( renderTarget ) {

		var renderTargetProperties = properties.get( renderTarget );
		var textureProperties = properties.get( renderTarget.texture );

		if ( ! renderTarget || textureProperties.__webglTexture === undefined ) return;

		_gl.deleteTexture( textureProperties.__webglTexture );

		if ( renderTarget instanceof THREE.WebGLRenderTargetCube ) {

			for ( var i = 0; i < 6; i ++ ) {

				_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );
				_gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );

			}

		} else {

			_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );
			_gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );

		}

		properties.delete( renderTarget.texture );
		properties.delete( renderTarget );

	}

	function deallocateMaterial( material ) {

		releaseMaterialProgramReference( material );

		properties.delete( material );

	}


	function releaseMaterialProgramReference( material ) {

		var programInfo = properties.get( material ).program;

		material.program = undefined;

		if ( programInfo !== undefined ) {

			programCache.releaseProgram( programInfo );

		}

	}

	// Buffer rendering

	this.renderBufferImmediate = function ( object, program, material ) {

		state.initAttributes();

		var buffers = properties.get( object );

		if ( object.hasPositions && ! buffers.position ) buffers.position = _gl.createBuffer();
		if ( object.hasNormals && ! buffers.normal ) buffers.normal = _gl.createBuffer();
		if ( object.hasUvs && ! buffers.uv ) buffers.uv = _gl.createBuffer();
		if ( object.hasColors && ! buffers.color ) buffers.color = _gl.createBuffer();

		var attributes = program.getAttributes();

		if ( object.hasPositions ) {

			_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.position );
			_gl.bufferData( _gl.ARRAY_BUFFER, object.positionArray, _gl.DYNAMIC_DRAW );

			state.enableAttribute( attributes.position );
			_gl.vertexAttribPointer( attributes.position, 3, _gl.FLOAT, false, 0, 0 );

		}

		if ( object.hasNormals ) {

			_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.normal );

			if ( material.type !== 'MeshPhongMaterial' && material.type !== 'MeshStandardMaterial' && material.shading === THREE.FlatShading ) {

				for ( var i = 0, l = object.count * 3; i < l; i += 9 ) {

					var array = object.normalArray;

					var nx = ( array[ i + 0 ] + array[ i + 3 ] + array[ i + 6 ] ) / 3;
					var ny = ( array[ i + 1 ] + array[ i + 4 ] + array[ i + 7 ] ) / 3;
					var nz = ( array[ i + 2 ] + array[ i + 5 ] + array[ i + 8 ] ) / 3;

					array[ i + 0 ] = nx;
					array[ i + 1 ] = ny;
					array[ i + 2 ] = nz;

					array[ i + 3 ] = nx;
					array[ i + 4 ] = ny;
					array[ i + 5 ] = nz;

					array[ i + 6 ] = nx;
					array[ i + 7 ] = ny;
					array[ i + 8 ] = nz;

				}

			}

			_gl.bufferData( _gl.ARRAY_BUFFER, object.normalArray, _gl.DYNAMIC_DRAW );

			state.enableAttribute( attributes.normal );

			_gl.vertexAttribPointer( attributes.normal, 3, _gl.FLOAT, false, 0, 0 );

		}

		if ( object.hasUvs && material.map ) {

			_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.uv );
			_gl.bufferData( _gl.ARRAY_BUFFER, object.uvArray, _gl.DYNAMIC_DRAW );

			state.enableAttribute( attributes.uv );

			_gl.vertexAttribPointer( attributes.uv, 2, _gl.FLOAT, false, 0, 0 );

		}

		if ( object.hasColors && material.vertexColors !== THREE.NoColors ) {

			_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.color );
			_gl.bufferData( _gl.ARRAY_BUFFER, object.colorArray, _gl.DYNAMIC_DRAW );

			state.enableAttribute( attributes.color );

			_gl.vertexAttribPointer( attributes.color, 3, _gl.FLOAT, false, 0, 0 );

		}

		state.disableUnusedAttributes();

		_gl.drawArrays( _gl.TRIANGLES, 0, object.count );

		object.count = 0;

	};

	this.renderBufferDirect = function ( camera, fog, geometry, material, object, group ) {

		setMaterial( material );

		var program = setProgram( camera, fog, material, object );

		var updateBuffers = false;
		var geometryProgram = geometry.id + '_' + program.id + '_' + material.wireframe;

		if ( geometryProgram !== _currentGeometryProgram ) {

			_currentGeometryProgram = geometryProgram;
			updateBuffers = true;

		}

		// morph targets

		var morphTargetInfluences = object.morphTargetInfluences;

		if ( morphTargetInfluences !== undefined ) {

			var activeInfluences = [];

			for ( var i = 0, l = morphTargetInfluences.length; i < l; i ++ ) {

				var influence = morphTargetInfluences[ i ];
				activeInfluences.push( [ influence, i ] );

			}

			activeInfluences.sort( absNumericalSort );

			if ( activeInfluences.length > 8 ) {

				activeInfluences.length = 8;

			}

			var morphAttributes = geometry.morphAttributes;

			for ( var i = 0, l = activeInfluences.length; i < l; i ++ ) {

				var influence = activeInfluences[ i ];
				morphInfluences[ i ] = influence[ 0 ];

				if ( influence[ 0 ] !== 0 ) {

					var index = influence[ 1 ];

					if ( material.morphTargets === true && morphAttributes.position ) geometry.addAttribute( 'morphTarget' + i, morphAttributes.position[ index ] );
					if ( material.morphNormals === true && morphAttributes.normal ) geometry.addAttribute( 'morphNormal' + i, morphAttributes.normal[ index ] );

				} else {

					if ( material.morphTargets === true ) geometry.removeAttribute( 'morphTarget' + i );
					if ( material.morphNormals === true ) geometry.removeAttribute( 'morphNormal' + i );

				}

			}

			var uniforms = program.getUniforms();

			if ( uniforms.morphTargetInfluences !== null ) {

				_gl.uniform1fv( uniforms.morphTargetInfluences, morphInfluences );

			}

			updateBuffers = true;

		}

		//

		var index = geometry.index;
		var position = geometry.attributes.position;

		if ( material.wireframe === true ) {

			index = objects.getWireframeAttribute( geometry );

		}

		var renderer;

		if ( index !== null ) {

			renderer = indexedBufferRenderer;
			renderer.setIndex( index );

		} else {

			renderer = bufferRenderer;

		}

		if ( updateBuffers ) {

			setupVertexAttributes( material, program, geometry );

			if ( index !== null ) {

				_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, objects.getAttributeBuffer( index ) );

			}

		}

		//

		var dataStart = 0;
		var dataCount = Infinity;

		if ( index !== null ) {

			dataCount = index.count;

		} else if ( position !== undefined ) {

			dataCount = position.count;

		}

		var rangeStart = geometry.drawRange.start;
		var rangeCount = geometry.drawRange.count;

		var groupStart = group !== null ? group.start : 0;
		var groupCount = group !== null ? group.count : Infinity;

		var drawStart = Math.max( dataStart, rangeStart, groupStart );
		var drawEnd = Math.min( dataStart + dataCount, rangeStart + rangeCount, groupStart + groupCount ) - 1;

		var drawCount = Math.max( 0, drawEnd - drawStart + 1 );

		//

		if ( object instanceof THREE.Mesh ) {

			if ( material.wireframe === true ) {

				state.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );
				renderer.setMode( _gl.LINES );

			} else {

				switch ( object.drawMode ) {

					case THREE.TrianglesDrawMode:
						renderer.setMode( _gl.TRIANGLES );
						break;

					case THREE.TriangleStripDrawMode:
						renderer.setMode( _gl.TRIANGLE_STRIP );
						break;

					case THREE.TriangleFanDrawMode:
						renderer.setMode( _gl.TRIANGLE_FAN );
						break;

				}

			}


		} else if ( object instanceof THREE.Line ) {

			var lineWidth = material.linewidth;

			if ( lineWidth === undefined ) lineWidth = 1; // Not using Line*Material

			state.setLineWidth( lineWidth * getTargetPixelRatio() );

			if ( object instanceof THREE.LineSegments ) {

				renderer.setMode( _gl.LINES );

			} else {

				renderer.setMode( _gl.LINE_STRIP );

			}

		} else if ( object instanceof THREE.Points ) {

			renderer.setMode( _gl.POINTS );

		}

		if ( geometry instanceof THREE.InstancedBufferGeometry && geometry.maxInstancedCount > 0 ) {

			renderer.renderInstances( geometry, drawStart, drawCount );

		} else {

			renderer.render( drawStart, drawCount );

		}

	};

	function setupVertexAttributes( material, program, geometry, startIndex ) {

		var extension;

		if ( geometry instanceof THREE.InstancedBufferGeometry ) {

			extension = extensions.get( 'ANGLE_instanced_arrays' );

			if ( extension === null ) {

				console.error( 'THREE.WebGLRenderer.setupVertexAttributes: using THREE.InstancedBufferGeometry but hard

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