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August 17, 2016 19:00
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requirebin sketch
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const polytope = require('conway-hart')('tI') | |
const vec3 = require('gl-vec3') | |
const HEIGHT = 6 | |
const bounds = require('bound-points')(polytope.positions) | |
const radius = Math.max( | |
bounds[1][0] - bounds[0][0], | |
bounds[1][1] - bounds[0][1], | |
bounds[1][2] - bounds[0][2]) | |
const scale = HEIGHT / radius | |
const edges = [] | |
polytope.cells.forEach((c) => { | |
for (let i = 0; i < c.length; ++i) { | |
edges.push([c[i], c[(i + 1) % c.length]]) | |
} | |
}) | |
const lengths = edges.map(([i, j]) => | |
vec3.length(vec3.subtract([], polytope.positions[i], polytope.positions[j]))) | |
lengths.sort(function (a, b) { | |
return a - b | |
}) | |
const histogram = {} | |
let total = 0 | |
lengths.forEach((l) => { | |
const x = Math.round(scale * l * 1000.0) / 1000.0 | |
histogram[x] = (histogram[x] | 0) + 1 | |
total += x | |
}) | |
Object.keys(histogram).forEach(function (l) { | |
histogram[l] /= 2 | |
}) | |
if (typeof document !== 'undefined') { | |
document.body.appendChild(document.createTextNode( | |
`dome height: ${HEIGHT} lengths: ${JSON.stringify(histogram)} total: ${total / 2}`)) | |
} | |
console.log('dome height: ', HEIGHT) | |
console.log('lengths: ', histogram) | |
console.log('total: ', total / 2) |
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setTimeout(function(){ | |
;require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){ | |
module.exports = add; | |
/** | |
* Adds two vec3's | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @returns {vec3} out | |
*/ | |
function add(out, a, b) { | |
out[0] = a[0] + b[0] | |
out[1] = a[1] + b[1] | |
out[2] = a[2] + b[2] | |
return out | |
} | |
},{}],2:[function(require,module,exports){ | |
module.exports = angle | |
var fromValues = require('./fromValues') | |
var normalize = require('./normalize') | |
var dot = require('./dot') | |
/** | |
* Get the angle between two 3D vectors | |
* @param {vec3} a The first operand | |
* @param {vec3} b The second operand | |
* @returns {Number} The angle in radians | |
*/ | |
function angle(a, b) { | |
var tempA = fromValues(a[0], a[1], a[2]) | |
var tempB = fromValues(b[0], b[1], b[2]) | |
normalize(tempA, tempA) | |
normalize(tempB, tempB) | |
var cosine = dot(tempA, tempB) | |
if(cosine > 1.0){ | |
return 0 | |
} else { | |
return Math.acos(cosine) | |
} | |
} | |
},{"./dot":9,"./fromValues":11,"./normalize":19}],3:[function(require,module,exports){ | |
module.exports = clone; | |
/** | |
* Creates a new vec3 initialized with values from an existing vector | |
* | |
* @param {vec3} a vector to clone | |
* @returns {vec3} a new 3D vector | |
*/ | |
function clone(a) { | |
var out = new Float32Array(3) | |
out[0] = a[0] | |
out[1] = a[1] | |
out[2] = a[2] | |
return out | |
} | |
},{}],4:[function(require,module,exports){ | |
module.exports = copy; | |
/** | |
* Copy the values from one vec3 to another | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the source vector | |
* @returns {vec3} out | |
*/ | |
function copy(out, a) { | |
out[0] = a[0] | |
out[1] = a[1] | |
out[2] = a[2] | |
return out | |
} | |
},{}],5:[function(require,module,exports){ | |
module.exports = create; | |
/** | |
* Creates a new, empty vec3 | |
* | |
* @returns {vec3} a new 3D vector | |
*/ | |
function create() { | |
var out = new Float32Array(3) | |
out[0] = 0 | |
out[1] = 0 | |
out[2] = 0 | |
return out | |
} | |
},{}],6:[function(require,module,exports){ | |
module.exports = cross; | |
/** | |
* Computes the cross product of two vec3's | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @returns {vec3} out | |
*/ | |
function cross(out, a, b) { | |
var ax = a[0], ay = a[1], az = a[2], | |
bx = b[0], by = b[1], bz = b[2] | |
out[0] = ay * bz - az * by | |
out[1] = az * bx - ax * bz | |
out[2] = ax * by - ay * bx | |
return out | |
} | |
},{}],7:[function(require,module,exports){ | |
module.exports = distance; | |
/** | |
* Calculates the euclidian distance between two vec3's | |
* | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @returns {Number} distance between a and b | |
*/ | |
function distance(a, b) { | |
var x = b[0] - a[0], | |
y = b[1] - a[1], | |
z = b[2] - a[2] | |
return Math.sqrt(x*x + y*y + z*z) | |
} | |
},{}],8:[function(require,module,exports){ | |
module.exports = divide; | |
/** | |
* Divides two vec3's | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @returns {vec3} out | |
*/ | |
function divide(out, a, b) { | |
out[0] = a[0] / b[0] | |
out[1] = a[1] / b[1] | |
out[2] = a[2] / b[2] | |
return out | |
} | |
},{}],9:[function(require,module,exports){ | |
module.exports = dot; | |
/** | |
* Calculates the dot product of two vec3's | |
* | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @returns {Number} dot product of a and b | |
*/ | |
function dot(a, b) { | |
return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] | |
} | |
},{}],10:[function(require,module,exports){ | |
module.exports = forEach; | |
var vec = require('./create')() | |
/** | |
* Perform some operation over an array of vec3s. | |
* | |
* @param {Array} a the array of vectors to iterate over | |
* @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed | |
* @param {Number} offset Number of elements to skip at the beginning of the array | |
* @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array | |
* @param {Function} fn Function to call for each vector in the array | |
* @param {Object} [arg] additional argument to pass to fn | |
* @returns {Array} a | |
* @function | |
*/ | |
function forEach(a, stride, offset, count, fn, arg) { | |
var i, l | |
if(!stride) { | |
stride = 3 | |
} | |
if(!offset) { | |
offset = 0 | |
} | |
if(count) { | |
l = Math.min((count * stride) + offset, a.length) | |
} else { | |
l = a.length | |
} | |
for(i = offset; i < l; i += stride) { | |
vec[0] = a[i] | |
vec[1] = a[i+1] | |
vec[2] = a[i+2] | |
fn(vec, vec, arg) | |
a[i] = vec[0] | |
a[i+1] = vec[1] | |
a[i+2] = vec[2] | |
} | |
return a | |
} | |
},{"./create":5}],11:[function(require,module,exports){ | |
module.exports = fromValues; | |
/** | |
* Creates a new vec3 initialized with the given values | |
* | |
* @param {Number} x X component | |
* @param {Number} y Y component | |
* @param {Number} z Z component | |
* @returns {vec3} a new 3D vector | |
*/ | |
function fromValues(x, y, z) { | |
var out = new Float32Array(3) | |
out[0] = x | |
out[1] = y | |
out[2] = z | |
return out | |
} | |
},{}],12:[function(require,module,exports){ | |
module.exports = inverse; | |
/** | |
* Returns the inverse of the components of a vec3 | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a vector to invert | |
* @returns {vec3} out | |
*/ | |
function inverse(out, a) { | |
out[0] = 1.0 / a[0] | |
out[1] = 1.0 / a[1] | |
out[2] = 1.0 / a[2] | |
return out | |
} | |
},{}],13:[function(require,module,exports){ | |
module.exports = length; | |
/** | |
* Calculates the length of a vec3 | |
* | |
* @param {vec3} a vector to calculate length of | |
* @returns {Number} length of a | |
*/ | |
function length(a) { | |
var x = a[0], | |
y = a[1], | |
z = a[2] | |
return Math.sqrt(x*x + y*y + z*z) | |
} | |
},{}],14:[function(require,module,exports){ | |
module.exports = lerp; | |
/** | |
* Performs a linear interpolation between two vec3's | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @param {Number} t interpolation amount between the two inputs | |
* @returns {vec3} out | |
*/ | |
function lerp(out, a, b, t) { | |
var ax = a[0], | |
ay = a[1], | |
az = a[2] | |
out[0] = ax + t * (b[0] - ax) | |
out[1] = ay + t * (b[1] - ay) | |
out[2] = az + t * (b[2] - az) | |
return out | |
} | |
},{}],15:[function(require,module,exports){ | |
module.exports = max; | |
/** | |
* Returns the maximum of two vec3's | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @returns {vec3} out | |
*/ | |
function max(out, a, b) { | |
out[0] = Math.max(a[0], b[0]) | |
out[1] = Math.max(a[1], b[1]) | |
out[2] = Math.max(a[2], b[2]) | |
return out | |
} | |
},{}],16:[function(require,module,exports){ | |
module.exports = min; | |
/** | |
* Returns the minimum of two vec3's | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @returns {vec3} out | |
*/ | |
function min(out, a, b) { | |
out[0] = Math.min(a[0], b[0]) | |
out[1] = Math.min(a[1], b[1]) | |
out[2] = Math.min(a[2], b[2]) | |
return out | |
} | |
},{}],17:[function(require,module,exports){ | |
module.exports = multiply; | |
/** | |
* Multiplies two vec3's | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @returns {vec3} out | |
*/ | |
function multiply(out, a, b) { | |
out[0] = a[0] * b[0] | |
out[1] = a[1] * b[1] | |
out[2] = a[2] * b[2] | |
return out | |
} | |
},{}],18:[function(require,module,exports){ | |
module.exports = negate; | |
/** | |
* Negates the components of a vec3 | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a vector to negate | |
* @returns {vec3} out | |
*/ | |
function negate(out, a) { | |
out[0] = -a[0] | |
out[1] = -a[1] | |
out[2] = -a[2] | |
return out | |
} | |
},{}],19:[function(require,module,exports){ | |
module.exports = normalize; | |
/** | |
* Normalize a vec3 | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a vector to normalize | |
* @returns {vec3} out | |
*/ | |
function normalize(out, a) { | |
var x = a[0], | |
y = a[1], | |
z = a[2] | |
var len = x*x + y*y + z*z | |
if (len > 0) { | |
//TODO: evaluate use of glm_invsqrt here? | |
len = 1 / Math.sqrt(len) | |
out[0] = a[0] * len | |
out[1] = a[1] * len | |
out[2] = a[2] * len | |
} | |
return out | |
} | |
},{}],20:[function(require,module,exports){ | |
module.exports = random; | |
/** | |
* Generates a random vector with the given scale | |
* | |
* @param {vec3} out the receiving vector | |
* @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned | |
* @returns {vec3} out | |
*/ | |
function random(out, scale) { | |
scale = scale || 1.0 | |
var r = Math.random() * 2.0 * Math.PI | |
var z = (Math.random() * 2.0) - 1.0 | |
var zScale = Math.sqrt(1.0-z*z) * scale | |
out[0] = Math.cos(r) * zScale | |
out[1] = Math.sin(r) * zScale | |
out[2] = z * scale | |
return out | |
} | |
},{}],21:[function(require,module,exports){ | |
module.exports = rotateX; | |
/** | |
* Rotate a 3D vector around the x-axis | |
* @param {vec3} out The receiving vec3 | |
* @param {vec3} a The vec3 point to rotate | |
* @param {vec3} b The origin of the rotation | |
* @param {Number} c The angle of rotation | |
* @returns {vec3} out | |
*/ | |
function rotateX(out, a, b, c){ | |
var p = [], r=[] | |
//Translate point to the origin | |
p[0] = a[0] - b[0] | |
p[1] = a[1] - b[1] | |
p[2] = a[2] - b[2] | |
//perform rotation | |
r[0] = p[0] | |
r[1] = p[1]*Math.cos(c) - p[2]*Math.sin(c) | |
r[2] = p[1]*Math.sin(c) + p[2]*Math.cos(c) | |
//translate to correct position | |
out[0] = r[0] + b[0] | |
out[1] = r[1] + b[1] | |
out[2] = r[2] + b[2] | |
return out | |
} | |
},{}],22:[function(require,module,exports){ | |
module.exports = rotateY; | |
/** | |
* Rotate a 3D vector around the y-axis | |
* @param {vec3} out The receiving vec3 | |
* @param {vec3} a The vec3 point to rotate | |
* @param {vec3} b The origin of the rotation | |
* @param {Number} c The angle of rotation | |
* @returns {vec3} out | |
*/ | |
function rotateY(out, a, b, c){ | |
var p = [], r=[] | |
//Translate point to the origin | |
p[0] = a[0] - b[0] | |
p[1] = a[1] - b[1] | |
p[2] = a[2] - b[2] | |
//perform rotation | |
r[0] = p[2]*Math.sin(c) + p[0]*Math.cos(c) | |
r[1] = p[1] | |
r[2] = p[2]*Math.cos(c) - p[0]*Math.sin(c) | |
//translate to correct position | |
out[0] = r[0] + b[0] | |
out[1] = r[1] + b[1] | |
out[2] = r[2] + b[2] | |
return out | |
} | |
},{}],23:[function(require,module,exports){ | |
module.exports = rotateZ; | |
/** | |
* Rotate a 3D vector around the z-axis | |
* @param {vec3} out The receiving vec3 | |
* @param {vec3} a The vec3 point to rotate | |
* @param {vec3} b The origin of the rotation | |
* @param {Number} c The angle of rotation | |
* @returns {vec3} out | |
*/ | |
function rotateZ(out, a, b, c){ | |
var p = [], r=[] | |
//Translate point to the origin | |
p[0] = a[0] - b[0] | |
p[1] = a[1] - b[1] | |
p[2] = a[2] - b[2] | |
//perform rotation | |
r[0] = p[0]*Math.cos(c) - p[1]*Math.sin(c) | |
r[1] = p[0]*Math.sin(c) + p[1]*Math.cos(c) | |
r[2] = p[2] | |
//translate to correct position | |
out[0] = r[0] + b[0] | |
out[1] = r[1] + b[1] | |
out[2] = r[2] + b[2] | |
return out | |
} | |
},{}],24:[function(require,module,exports){ | |
module.exports = scale; | |
/** | |
* Scales a vec3 by a scalar number | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the vector to scale | |
* @param {Number} b amount to scale the vector by | |
* @returns {vec3} out | |
*/ | |
function scale(out, a, b) { | |
out[0] = a[0] * b | |
out[1] = a[1] * b | |
out[2] = a[2] * b | |
return out | |
} | |
},{}],25:[function(require,module,exports){ | |
module.exports = scaleAndAdd; | |
/** | |
* Adds two vec3's after scaling the second operand by a scalar value | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @param {Number} scale the amount to scale b by before adding | |
* @returns {vec3} out | |
*/ | |
function scaleAndAdd(out, a, b, scale) { | |
out[0] = a[0] + (b[0] * scale) | |
out[1] = a[1] + (b[1] * scale) | |
out[2] = a[2] + (b[2] * scale) | |
return out | |
} | |
},{}],26:[function(require,module,exports){ | |
module.exports = set; | |
/** | |
* Set the components of a vec3 to the given values | |
* | |
* @param {vec3} out the receiving vector | |
* @param {Number} x X component | |
* @param {Number} y Y component | |
* @param {Number} z Z component | |
* @returns {vec3} out | |
*/ | |
function set(out, x, y, z) { | |
out[0] = x | |
out[1] = y | |
out[2] = z | |
return out | |
} | |
},{}],27:[function(require,module,exports){ | |
module.exports = squaredDistance; | |
/** | |
* Calculates the squared euclidian distance between two vec3's | |
* | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @returns {Number} squared distance between a and b | |
*/ | |
function squaredDistance(a, b) { | |
var x = b[0] - a[0], | |
y = b[1] - a[1], | |
z = b[2] - a[2] | |
return x*x + y*y + z*z | |
} | |
},{}],28:[function(require,module,exports){ | |
module.exports = squaredLength; | |
/** | |
* Calculates the squared length of a vec3 | |
* | |
* @param {vec3} a vector to calculate squared length of | |
* @returns {Number} squared length of a | |
*/ | |
function squaredLength(a) { | |
var x = a[0], | |
y = a[1], | |
z = a[2] | |
return x*x + y*y + z*z | |
} | |
},{}],29:[function(require,module,exports){ | |
module.exports = subtract; | |
/** | |
* Subtracts vector b from vector a | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the first operand | |
* @param {vec3} b the second operand | |
* @returns {vec3} out | |
*/ | |
function subtract(out, a, b) { | |
out[0] = a[0] - b[0] | |
out[1] = a[1] - b[1] | |
out[2] = a[2] - b[2] | |
return out | |
} | |
},{}],30:[function(require,module,exports){ | |
module.exports = transformMat3; | |
/** | |
* Transforms the vec3 with a mat3. | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the vector to transform | |
* @param {mat4} m the 3x3 matrix to transform with | |
* @returns {vec3} out | |
*/ | |
function transformMat3(out, a, m) { | |
var x = a[0], y = a[1], z = a[2] | |
out[0] = x * m[0] + y * m[3] + z * m[6] | |
out[1] = x * m[1] + y * m[4] + z * m[7] | |
out[2] = x * m[2] + y * m[5] + z * m[8] | |
return out | |
} | |
},{}],31:[function(require,module,exports){ | |
module.exports = transformMat4; | |
/** | |
* Transforms the vec3 with a mat4. | |
* 4th vector component is implicitly '1' | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the vector to transform | |
* @param {mat4} m matrix to transform with | |
* @returns {vec3} out | |
*/ | |
function transformMat4(out, a, m) { | |
var x = a[0], y = a[1], z = a[2], | |
w = m[3] * x + m[7] * y + m[11] * z + m[15] | |
w = w || 1.0 | |
out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w | |
out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w | |
out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w | |
return out | |
} | |
},{}],32:[function(require,module,exports){ | |
module.exports = transformQuat; | |
/** | |
* Transforms the vec3 with a quat | |
* | |
* @param {vec3} out the receiving vector | |
* @param {vec3} a the vector to transform | |
* @param {quat} q quaternion to transform with | |
* @returns {vec3} out | |
*/ | |
function transformQuat(out, a, q) { | |
// benchmarks: http://jsperf.com/quaternion-transform-vec3-implementations | |
var x = a[0], y = a[1], z = a[2], | |
qx = q[0], qy = q[1], qz = q[2], qw = q[3], | |
// calculate quat * vec | |
ix = qw * x + qy * z - qz * y, | |
iy = qw * y + qz * x - qx * z, | |
iz = qw * z + qx * y - qy * x, | |
iw = -qx * x - qy * y - qz * z | |
// calculate result * inverse quat | |
out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy | |
out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz | |
out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx | |
return out | |
} | |
},{}],"gl-vec3":[function(require,module,exports){ | |
module.exports = { | |
create: require('./create') | |
, clone: require('./clone') | |
, angle: require('./angle') | |
, fromValues: require('./fromValues') | |
, copy: require('./copy') | |
, set: require('./set') | |
, add: require('./add') | |
, subtract: require('./subtract') | |
, multiply: require('./multiply') | |
, divide: require('./divide') | |
, min: require('./min') | |
, max: require('./max') | |
, scale: require('./scale') | |
, scaleAndAdd: require('./scaleAndAdd') | |
, distance: require('./distance') | |
, squaredDistance: require('./squaredDistance') | |
, length: require('./length') | |
, squaredLength: require('./squaredLength') | |
, negate: require('./negate') | |
, inverse: require('./inverse') | |
, normalize: require('./normalize') | |
, dot: require('./dot') | |
, cross: require('./cross') | |
, lerp: require('./lerp') | |
, random: require('./random') | |
, transformMat4: require('./transformMat4') | |
, transformMat3: require('./transformMat3') | |
, transformQuat: require('./transformQuat') | |
, rotateX: require('./rotateX') | |
, rotateY: require('./rotateY') | |
, rotateZ: require('./rotateZ') | |
, forEach: require('./forEach') | |
} | |
},{"./add":1,"./angle":2,"./clone":3,"./copy":4,"./create":5,"./cross":6,"./distance":7,"./divide":8,"./dot":9,"./forEach":10,"./fromValues":11,"./inverse":12,"./length":13,"./lerp":14,"./max":15,"./min":16,"./multiply":17,"./negate":18,"./normalize":19,"./random":20,"./rotateX":21,"./rotateY":22,"./rotateZ":23,"./scale":24,"./scaleAndAdd":25,"./set":26,"./squaredDistance":27,"./squaredLength":28,"./subtract":29,"./transformMat3":30,"./transformMat4":31,"./transformQuat":32}]},{},[]) | |
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e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})","module.exports = add;\n\n/**\n * Adds two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @returns {vec3} out\n */\nfunction add(out, a, b) {\n    out[0] = a[0] + b[0]\n    out[1] = a[1] + b[1]\n    out[2] = a[2] + b[2]\n    return out\n}","module.exports = angle\n\nvar fromValues = require('./fromValues')\nvar normalize = require('./normalize')\nvar dot = require('./dot')\n\n/**\n * Get the angle between two 3D vectors\n * @param {vec3} a The first operand\n * @param {vec3} b The second operand\n * @returns {Number} The angle in radians\n */\nfunction angle(a, b) {\n    var tempA = fromValues(a[0], a[1], a[2])\n    var tempB = fromValues(b[0], b[1], b[2])\n \n    normalize(tempA, tempA)\n    normalize(tempB, tempB)\n \n    var cosine = dot(tempA, tempB)\n\n    if(cosine > 1.0){\n        return 0\n    } else {\n        return Math.acos(cosine)\n    }     \n}\n","module.exports = clone;\n\n/**\n * Creates a new vec3 initialized with values from an existing vector\n *\n * @param {vec3} a vector to clone\n * @returns {vec3} a new 3D vector\n */\nfunction clone(a) {\n    var out = new Float32Array(3)\n    out[0] = a[0]\n    out[1] = a[1]\n    out[2] = a[2]\n    return out\n}","module.exports = copy;\n\n/**\n * Copy the values from one vec3 to another\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the source vector\n * @returns {vec3} out\n */\nfunction copy(out, a) {\n    out[0] = a[0]\n    out[1] = a[1]\n    out[2] = a[2]\n    return out\n}","module.exports = create;\n\n/**\n * Creates a new, empty vec3\n *\n * @returns {vec3} a new 3D vector\n */\nfunction create() {\n    var out = new Float32Array(3)\n    out[0] = 0\n    out[1] = 0\n    out[2] = 0\n    return out\n}","module.exports = cross;\n\n/**\n * Computes the cross product of two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @returns {vec3} out\n */\nfunction cross(out, a, b) {\n    var ax = a[0], ay = a[1], az = a[2],\n        bx = b[0], by = b[1], bz = b[2]\n\n    out[0] = ay * bz - az * by\n    out[1] = az * bx - ax * bz\n    out[2] = ax * by - ay * bx\n    return out\n}","module.exports = distance;\n\n/**\n * Calculates the euclidian distance between two vec3's\n *\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @returns {Number} distance between a and b\n */\nfunction distance(a, b) {\n    var x = b[0] - a[0],\n        y = b[1] - a[1],\n        z = b[2] - a[2]\n    return Math.sqrt(x*x + y*y + z*z)\n}","module.exports = divide;\n\n/**\n * Divides two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @returns {vec3} out\n */\nfunction divide(out, a, b) {\n    out[0] = a[0] / b[0]\n    out[1] = a[1] / b[1]\n    out[2] = a[2] / b[2]\n    return out\n}","module.exports = dot;\n\n/**\n * Calculates the dot product of two vec3's\n *\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @returns {Number} dot product of a and b\n */\nfunction dot(a, b) {\n    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]\n}","module.exports = forEach;\n\nvar vec = require('./create')()\n\n/**\n * Perform some operation over an array of vec3s.\n *\n * @param {Array} a the array of vectors to iterate over\n * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed\n * @param {Number} offset Number of elements to skip at the beginning of the array\n * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array\n * @param {Function} fn Function to call for each vector in the array\n * @param {Object} [arg] additional argument to pass to fn\n * @returns {Array} a\n * @function\n */\nfunction forEach(a, stride, offset, count, fn, arg) {\n        var i, l\n        if(!stride) {\n            stride = 3\n        }\n\n        if(!offset) {\n            offset = 0\n        }\n        \n        if(count) {\n            l = Math.min((count * stride) + offset, a.length)\n        } else {\n            l = a.length\n        }\n\n        for(i = offset; i < l; i += stride) {\n            vec[0] = a[i] \n            vec[1] = a[i+1] \n            vec[2] = a[i+2]\n            fn(vec, vec, arg)\n            a[i] = vec[0] \n            a[i+1] = vec[1] \n            a[i+2] = vec[2]\n        }\n        \n        return a\n}","module.exports = fromValues;\n\n/**\n * Creates a new vec3 initialized with the given values\n *\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @returns {vec3} a new 3D vector\n */\nfunction fromValues(x, y, z) {\n    var out = new Float32Array(3)\n    out[0] = x\n    out[1] = y\n    out[2] = z\n    return out\n}","module.exports = inverse;\n\n/**\n * Returns the inverse of the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a vector to invert\n * @returns {vec3} out\n */\nfunction inverse(out, a) {\n  out[0] = 1.0 / a[0]\n  out[1] = 1.0 / a[1]\n  out[2] = 1.0 / a[2]\n  return out\n}","module.exports = length;\n\n/**\n * Calculates the length of a vec3\n *\n * @param {vec3} a vector to calculate length of\n * @returns {Number} length of a\n */\nfunction length(a) {\n    var x = a[0],\n        y = a[1],\n        z = a[2]\n    return Math.sqrt(x*x + y*y + z*z)\n}","module.exports = lerp;\n\n/**\n * Performs a linear interpolation between two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @param {Number} t interpolation amount between the two inputs\n * @returns {vec3} out\n */\nfunction lerp(out, a, b, t) {\n    var ax = a[0],\n        ay = a[1],\n        az = a[2]\n    out[0] = ax + t * (b[0] - ax)\n    out[1] = ay + t * (b[1] - ay)\n    out[2] = az + t * (b[2] - az)\n    return out\n}","module.exports = max;\n\n/**\n * Returns the maximum of two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @returns {vec3} out\n */\nfunction max(out, a, b) {\n    out[0] = Math.max(a[0], b[0])\n    out[1] = Math.max(a[1], b[1])\n    out[2] = Math.max(a[2], b[2])\n    return out\n}","module.exports = min;\n\n/**\n * Returns the minimum of two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @returns {vec3} out\n */\nfunction min(out, a, b) {\n    out[0] = Math.min(a[0], b[0])\n    out[1] = Math.min(a[1], b[1])\n    out[2] = Math.min(a[2], b[2])\n    return out\n}","module.exports = multiply;\n\n/**\n * Multiplies two vec3's\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @returns {vec3} out\n */\nfunction multiply(out, a, b) {\n    out[0] = a[0] * b[0]\n    out[1] = a[1] * b[1]\n    out[2] = a[2] * b[2]\n    return out\n}","module.exports = negate;\n\n/**\n * Negates the components of a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a vector to negate\n * @returns {vec3} out\n */\nfunction negate(out, a) {\n    out[0] = -a[0]\n    out[1] = -a[1]\n    out[2] = -a[2]\n    return out\n}","module.exports = normalize;\n\n/**\n * Normalize a vec3\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a vector to normalize\n * @returns {vec3} out\n */\nfunction normalize(out, a) {\n    var x = a[0],\n        y = a[1],\n        z = a[2]\n    var len = x*x + y*y + z*z\n    if (len > 0) {\n        //TODO: evaluate use of glm_invsqrt here?\n        len = 1 / Math.sqrt(len)\n        out[0] = a[0] * len\n        out[1] = a[1] * len\n        out[2] = a[2] * len\n    }\n    return out\n}","module.exports = random;\n\n/**\n * Generates a random vector with the given scale\n *\n * @param {vec3} out the receiving vector\n * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned\n * @returns {vec3} out\n */\nfunction random(out, scale) {\n    scale = scale || 1.0\n\n    var r = Math.random() * 2.0 * Math.PI\n    var z = (Math.random() * 2.0) - 1.0\n    var zScale = Math.sqrt(1.0-z*z) * scale\n\n    out[0] = Math.cos(r) * zScale\n    out[1] = Math.sin(r) * zScale\n    out[2] = z * scale\n    return out\n}","module.exports = rotateX;\n\n/**\n * Rotate a 3D vector around the x-axis\n * @param {vec3} out The receiving vec3\n * @param {vec3} a The vec3 point to rotate\n * @param {vec3} b The origin of the rotation\n * @param {Number} c The angle of rotation\n * @returns {vec3} out\n */\nfunction rotateX(out, a, b, c){\n    var p = [], r=[]\n    //Translate point to the origin\n    p[0] = a[0] - b[0]\n    p[1] = a[1] - b[1]\n    p[2] = a[2] - b[2]\n\n    //perform rotation\n    r[0] = p[0]\n    r[1] = p[1]*Math.cos(c) - p[2]*Math.sin(c)\n    r[2] = p[1]*Math.sin(c) + p[2]*Math.cos(c)\n\n    //translate to correct position\n    out[0] = r[0] + b[0]\n    out[1] = r[1] + b[1]\n    out[2] = r[2] + b[2]\n\n    return out\n}","module.exports = rotateY;\n\n/**\n * Rotate a 3D vector around the y-axis\n * @param {vec3} out The receiving vec3\n * @param {vec3} a The vec3 point to rotate\n * @param {vec3} b The origin of the rotation\n * @param {Number} c The angle of rotation\n * @returns {vec3} out\n */\nfunction rotateY(out, a, b, c){\n    var p = [], r=[]\n    //Translate point to the origin\n    p[0] = a[0] - b[0]\n    p[1] = a[1] - b[1]\n    p[2] = a[2] - b[2]\n  \n    //perform rotation\n    r[0] = p[2]*Math.sin(c) + p[0]*Math.cos(c)\n    r[1] = p[1]\n    r[2] = p[2]*Math.cos(c) - p[0]*Math.sin(c)\n  \n    //translate to correct position\n    out[0] = r[0] + b[0]\n    out[1] = r[1] + b[1]\n    out[2] = r[2] + b[2]\n  \n    return out\n}","module.exports = rotateZ;\n\n/**\n * Rotate a 3D vector around the z-axis\n * @param {vec3} out The receiving vec3\n * @param {vec3} a The vec3 point to rotate\n * @param {vec3} b The origin of the rotation\n * @param {Number} c The angle of rotation\n * @returns {vec3} out\n */\nfunction rotateZ(out, a, b, c){\n    var p = [], r=[]\n    //Translate point to the origin\n    p[0] = a[0] - b[0]\n    p[1] = a[1] - b[1]\n    p[2] = a[2] - b[2]\n  \n    //perform rotation\n    r[0] = p[0]*Math.cos(c) - p[1]*Math.sin(c)\n    r[1] = p[0]*Math.sin(c) + p[1]*Math.cos(c)\n    r[2] = p[2]\n  \n    //translate to correct position\n    out[0] = r[0] + b[0]\n    out[1] = r[1] + b[1]\n    out[2] = r[2] + b[2]\n  \n    return out\n}","module.exports = scale;\n\n/**\n * Scales a vec3 by a scalar number\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the vector to scale\n * @param {Number} b amount to scale the vector by\n * @returns {vec3} out\n */\nfunction scale(out, a, b) {\n    out[0] = a[0] * b\n    out[1] = a[1] * b\n    out[2] = a[2] * b\n    return out\n}","module.exports = scaleAndAdd;\n\n/**\n * Adds two vec3's after scaling the second operand by a scalar value\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @param {Number} scale the amount to scale b by before adding\n * @returns {vec3} out\n */\nfunction scaleAndAdd(out, a, b, scale) {\n    out[0] = a[0] + (b[0] * scale)\n    out[1] = a[1] + (b[1] * scale)\n    out[2] = a[2] + (b[2] * scale)\n    return out\n}","module.exports = set;\n\n/**\n * Set the components of a vec3 to the given values\n *\n * @param {vec3} out the receiving vector\n * @param {Number} x X component\n * @param {Number} y Y component\n * @param {Number} z Z component\n * @returns {vec3} out\n */\nfunction set(out, x, y, z) {\n    out[0] = x\n    out[1] = y\n    out[2] = z\n    return out\n}","module.exports = squaredDistance;\n\n/**\n * Calculates the squared euclidian distance between two vec3's\n *\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @returns {Number} squared distance between a and b\n */\nfunction squaredDistance(a, b) {\n    var x = b[0] - a[0],\n        y = b[1] - a[1],\n        z = b[2] - a[2]\n    return x*x + y*y + z*z\n}","module.exports = squaredLength;\n\n/**\n * Calculates the squared length of a vec3\n *\n * @param {vec3} a vector to calculate squared length of\n * @returns {Number} squared length of a\n */\nfunction squaredLength(a) {\n    var x = a[0],\n        y = a[1],\n        z = a[2]\n    return x*x + y*y + z*z\n}","module.exports = subtract;\n\n/**\n * Subtracts vector b from vector a\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the first operand\n * @param {vec3} b the second operand\n * @returns {vec3} out\n */\nfunction subtract(out, a, b) {\n    out[0] = a[0] - b[0]\n    out[1] = a[1] - b[1]\n    out[2] = a[2] - b[2]\n    return out\n}","module.exports = transformMat3;\n\n/**\n * Transforms the vec3 with a mat3.\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the vector to transform\n * @param {mat4} m the 3x3 matrix to transform with\n * @returns {vec3} out\n */\nfunction transformMat3(out, a, m) {\n    var x = a[0], y = a[1], z = a[2]\n    out[0] = x * m[0] + y * m[3] + z * m[6]\n    out[1] = x * m[1] + y * m[4] + z * m[7]\n    out[2] = x * m[2] + y * m[5] + z * m[8]\n    return out\n}","module.exports = transformMat4;\n\n/**\n * Transforms the vec3 with a mat4.\n * 4th vector component is implicitly '1'\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the vector to transform\n * @param {mat4} m matrix to transform with\n * @returns {vec3} out\n */\nfunction transformMat4(out, a, m) {\n    var x = a[0], y = a[1], z = a[2],\n        w = m[3] * x + m[7] * y + m[11] * z + m[15]\n    w = w || 1.0\n    out[0] = (m[0] * x + m[4] * y + m[8] * z + m[12]) / w\n    out[1] = (m[1] * x + m[5] * y + m[9] * z + m[13]) / w\n    out[2] = (m[2] * x + m[6] * y + m[10] * z + m[14]) / w\n    return out\n}","module.exports = transformQuat;\n\n/**\n * Transforms the vec3 with a quat\n *\n * @param {vec3} out the receiving vector\n * @param {vec3} a the vector to transform\n * @param {quat} q quaternion to transform with\n * @returns {vec3} out\n */\nfunction transformQuat(out, a, q) {\n    // benchmarks: http://jsperf.com/quaternion-transform-vec3-implementations\n\n    var x = a[0], y = a[1], z = a[2],\n        qx = q[0], qy = q[1], qz = q[2], qw = q[3],\n\n        // calculate quat * vec\n        ix = qw * x + qy * z - qz * y,\n        iy = qw * y + qz * x - qx * z,\n        iz = qw * z + qx * y - qy * x,\n        iw = -qx * x - qy * y - qz * z\n\n    // calculate result * inverse quat\n    out[0] = ix * qw + iw * -qx + iy * -qz - iz * -qy\n    out[1] = iy * qw + iw * -qy + iz * -qx - ix * -qz\n    out[2] = iz * qw + iw * -qz + ix * -qy - iy * -qx\n    return out\n}","module.exports = {\n  create: require('./create')\n  , clone: require('./clone')\n  , angle: require('./angle')\n  , fromValues: require('./fromValues')\n  , copy: require('./copy')\n  , set: require('./set')\n  , add: require('./add')\n  , subtract: require('./subtract')\n  , multiply: require('./multiply')\n  , divide: require('./divide')\n  , min: require('./min')\n  , max: require('./max')\n  , scale: require('./scale')\n  , scaleAndAdd: require('./scaleAndAdd')\n  , distance: require('./distance')\n  , squaredDistance: require('./squaredDistance')\n  , length: require('./length')\n  , squaredLength: require('./squaredLength')\n  , negate: require('./negate')\n  , inverse: require('./inverse')\n  , normalize: require('./normalize')\n  , dot: require('./dot')\n  , cross: require('./cross')\n  , lerp: require('./lerp')\n  , random: require('./random')\n  , transformMat4: require('./transformMat4')\n  , transformMat3: require('./transformMat3')\n  , transformQuat: require('./transformQuat')\n  , rotateX: require('./rotateX')\n  , rotateY: require('./rotateY')\n  , rotateZ: require('./rotateZ')\n  , forEach: require('./forEach')\n}"]} | |
require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){ | |
function Assembler() { | |
this.flags = {}; | |
this.positions = {}; | |
this.faces = {}; | |
} | |
Assembler.prototype.newFlag = function(face, v1, v2) { | |
if (!this.flags[face]) { | |
this.flags[face] = { }; | |
} | |
this.flags[face][v1] = v2; | |
} | |
Assembler.prototype.newV = function(name, p) { | |
this.positions[name] = p; | |
} | |
Assembler.prototype.flags2poly = function() { | |
var rpositions = []; | |
var verts = {}; | |
for (var i in this.positions) { | |
verts[i] = rpositions.length; | |
rpositions.push(this.positions[i]); | |
} | |
var rfaces = []; | |
for (var i in this.flags) { | |
var flag = this.flags[i]; | |
var f = []; | |
var v0 = Object.keys(flag)[0]; | |
var v = v0; | |
do { | |
f.push(verts[v]); | |
v = flag[v]; | |
} while (v != v0); | |
rfaces.push(f); | |
} | |
return { | |
name: "?", | |
positions: rpositions, | |
faces: rfaces | |
}; | |
} | |
module.exports = Assembler; | |
},{}],2:[function(require,module,exports){ | |
//-------------------Canonicalization Algorithm-------------------------- | |
// True canonicalization rather slow. Using center of gravity of vertices for each | |
// face gives a quick "adjustment" which planarizes faces at least. | |
"use strict"; | |
var util = require("./util.js"); | |
var makeDual = require("./dual.js"); | |
function reciprocalN(poly) { // make array of vertices reciprocal to given planes | |
var ans = new Array(poly.faces.length); | |
for (var i=0; i<poly.faces.length; ++i) { // for each face: | |
var centroid = [0.0, 0.0, 0.0]; // running sum of vertex coords | |
var normal = [0.0, 0.0, 0.0]; // running sum of normal vectors | |
var avgEdgeDist = 0.; // running sum for avg edge distance | |
var v1 = poly.faces[i][poly.faces[i].length-2]; // preprevious vertex | |
var v2 = poly.faces[i][poly.faces[i].length-1]; // previous vertex | |
for (var j=0; j<poly.faces[i].length; j++) { | |
var v3 = poly.faces[i][j]; // this vertex | |
centroid = util.add(centroid, poly.positions[v3]); | |
normal = util.add(normal, util.orthogonal(poly.positions[v1], poly.positions[v2], poly.positions[v3])); | |
avgEdgeDist = avgEdgeDist + util.edgeDist(poly.positions[v1], poly.positions[v2]); | |
v1 = v2; // shift over one | |
v2 = v3; | |
} | |
centroid = util.mult(1.0/poly.faces[i].length, centroid); | |
normal = util.unit(normal); | |
avgEdgeDist = avgEdgeDist / poly.faces[i].length; | |
ans[i] = util.reciprocal(util.mult(util.dot(centroid, normal), normal)); // based on face | |
ans[i] = util.mult((1+avgEdgeDist)/2, ans[i]); // edge correction | |
} | |
return (ans); | |
} | |
function reciprocalC(poly) { // return array of reciprocals of face centers | |
var center = faceCenters(poly); | |
for (var i=0; i<poly.faces.length; i++) { | |
var m2 = center[i][0]*center[i][0] + center[i][1]*center[i][1] + center[i][2]*center[i][2]; | |
center[i][0] = center[i][0] / m2; // divide each coord by magnitude squared | |
center[i][1] = center[i][1] / m2; | |
center[i][2] = center[i][2] / m2; | |
} | |
return(center); | |
} | |
function faceCenters(poly) { // return array of "face centers" | |
var ans = new Array(poly.faces.length); | |
for (var i=0; i<poly.faces.length; i++) { | |
ans[i] = util.vecZero(); // running sum | |
for (var j=0; j<poly.faces[i].length; j++) // just average vertex coords: | |
ans[i] = util.add(ans[i], poly.positions[poly.faces[i][j]]); // sum and... | |
ans[i] = util.mult(1./poly.faces[i].length, ans[i]); // ...divide by n | |
} | |
return (ans); | |
} | |
exports.faceCenters = faceCenters; | |
function canonicalpositions(poly, nIterations) { // compute new vertex coords. | |
var dpoly = makeDual(poly) // v's of dual are in order or arg's f's | |
for (var count=0; count<nIterations; count++) { // iteration: | |
dpoly.positions = reciprocalN(poly); | |
poly.positions = reciprocalN(dpoly); | |
} | |
} | |
exports.canonicalpositions = canonicalpositions; | |
function adjustpositions(poly, nIterations) { | |
var dpoly = makeDual(poly) // v's of dual are in order or arg's f's | |
for (var count=0; count<1; count++) { // iteration: | |
dpoly.positions = reciprocalC(poly); // reciprocate face centers | |
poly.positions = reciprocalC(dpoly); // reciprocate face centers | |
} | |
} | |
exports.adjustpositions = adjustpositions; | |
},{"./dual.js":3,"./util.js":6}],3:[function(require,module,exports){ | |
//--------------------------------Dual------------------------------------------ | |
// the makeDual function computes the dual's topology, needed for canonicalization, | |
// where positions's are determined. It is then saved in a global variable globSavedDual. | |
// when the d operator is executed, d just returns the saved value. | |
"use strict"; | |
var Assembler = require("./assembler.js"); | |
var util = require("./util.js"); | |
module.exports = function(poly) { // compute dual of argument, matching V and F indices | |
var result = new Assembler(); | |
var faces = new Array(poly.positions.length); // make table of face as fn of edge | |
for (var i=0; i<poly.positions.length; i++) { | |
faces[i] = new Object(); // create empty associative table | |
} | |
for (var i=0; i<poly.faces.length; i++) { | |
var v1 = poly.faces[i][poly.faces[i].length-1]; // previous vertex | |
for (j=0; j<poly.faces[i].length; j++) { | |
var v2 = poly.faces[i][j]; // this vertex | |
faces[v1]["v" + v2] = i; // fill it. 2nd index is associative | |
v1 = v2; // current becomes previous | |
} | |
} | |
for (var i=0; i<poly.faces.length; i++) { // create d's v's per p's f's | |
result.newV(i, [0,0,0]); // only topology needed for canonicalize | |
} | |
for (var i=0; i<poly.faces.length; i++) { // one new flag for each old one | |
var v1 = poly.faces[i][poly.faces[i].length-1]; // previous vertex | |
for (j=0; j<poly.faces[i].length; j++) { | |
var v2 = poly.faces[i][j]; // this vertex | |
result.newFlag(v1, faces[v2]["v" + v1], i); // look up face across edge | |
v1 = v2; // current becomes previous | |
} | |
} | |
var ans = result.flags2poly(); // this gives one indexing of answer | |
var sortF = new Array(ans.faces.length); // but f's of dual are randomly ordered, so sort | |
for (var i=0; i<ans.faces.length; i++) { | |
var j = util.intersect(poly.faces[ans.faces[i][0]],poly.faces[ans.faces[i][1]],poly.faces[ans.faces[i][2]]); | |
sortF[j] = ans.faces[i]; // p's v for d's f is common to three of p's f's | |
} | |
ans.faces = sortF; // replace with the sorted list of faces | |
if(poly.name) { | |
if (poly.name.substr(0,1)!="d") { | |
ans.name = "d" + poly.name; // dual name is same with "d" added... | |
} else { | |
ans.name = poly.name.substr(1); // ...or removed | |
} | |
} | |
return ans; | |
} | |
},{"./assembler.js":1,"./util.js":6}],4:[function(require,module,exports){ | |
"use strict"; | |
var util = require("./util.js"); | |
var makeDual = require("./dual.js"); | |
var Assembler = require("./assembler.js"); | |
var canonicalize = require("./canonicalize.js"); | |
exports.dual = function(poly) { | |
var dpoly = makeDual(poly); | |
dpoly.positions = canonicalize.faceCenters(poly); | |
return dpoly; | |
} | |
exports.canonicalize = function(poly) { | |
poly = util.clone(poly); | |
canonicalize.canonicalpositions(poly); | |
return poly; | |
} | |
function kis(poly, n) { // only kis n-sided faces, but n==0 means kiss all. | |
var result = new Assembler(); | |
for (var i=0; i<poly.positions.length; i++) { | |
result.newV("v"+i, poly.positions[i]); // each old vertex is a new vertex | |
} | |
var centers = canonicalize.faceCenters(poly); // new vertices in centers of n-sided face | |
var foundAny = false; // alert if don't find any | |
for (var i=0; i<poly.faces.length; i++) { | |
var v1 = "v" + poly.faces[i][poly.faces[i].length-1]; // previous vertex | |
for (var j=0; j<poly.faces[i].length; j++) { | |
var v2 = "v" + poly.faces[i][j]; // this vertex | |
if (poly.faces[i].length == n || n==0) { // kiss the n's, or all | |
foundAny = true; // flag that we found some | |
result.newV("f"+i, centers[i]); // new vertex in face center | |
var fname = i + v1; | |
result.newFlag(fname, v1, v2); // three new flags, if n-sided | |
result.newFlag(fname, v2, "f"+i); | |
result.newFlag(fname, "f"+i, v1); | |
} | |
else | |
result.newFlag(i, v1, v2); // same old flag, if non-n | |
v1 = v2; // current becomes previous | |
} | |
} | |
var ans = result.flags2poly(); | |
ans.name = "k" + (n===0?"":n) + poly.name; | |
canonicalize.adjustpositions(ans, 3); // adjust and | |
return (ans); | |
} | |
exports.kis = kis; | |
function ambo(poly) { // compute ambo of argument | |
var result = new Assembler(); | |
for (var i=0; i<poly.faces.length; i++) { | |
var v1 = poly.faces[i][poly.faces[i].length-2]; // preprevious vertex | |
var v2 = poly.faces[i][poly.faces[i].length-1]; // previous vertex | |
for (var j=0; j<poly.faces[i].length; j++) { | |
var v3 = poly.faces[i][j]; // this vertex | |
if (v1 < v2) // new vertices at edge midpoints | |
result.newV(midName(v1,v2), util.midpoint(poly.positions[v1],poly.positions[v2])); | |
result.newFlag("f"+i, midName(v1,v2), midName(v2,v3)); // two new flags | |
result.newFlag("v"+v2, midName(v2,v3), midName(v1,v2)); | |
v1 = v2; // shift over one | |
v2 = v3; | |
} | |
} | |
var ans = result.flags2poly(); | |
ans.name = "a" + poly.name; | |
canonicalize.adjustpositions(ans, 2); // canonicalize lightly | |
return (ans); | |
} | |
exports.ambo = ambo; | |
function midName(v1,v2) { // unique symbolic name, e.g. "1_2" | |
if (v1<v2) | |
return (v1 + "_" + v2); | |
else | |
return (v2 + "_" + v1); | |
} | |
function gyro(poly) { // compute gyro of argument | |
var result = new Assembler(); | |
for (var i=0; i<poly.positions.length; i++) | |
result.newV("v"+i, util.unit(poly.positions[i])); // each old vertex is a new vertex | |
var centers = canonicalize.faceCenters(poly); // new vertices in center of each face | |
for (var i=0; i<poly.faces.length; i++) | |
result.newV("f"+i, util.unit(centers[i])); | |
for (var i=0; i<poly.faces.length; i++) { | |
var v1 = poly.faces[i][poly.faces[i].length-2]; // preprevious vertex | |
var v2 = poly.faces[i][poly.faces[i].length-1]; // previous vertex | |
for (var j=0; j<poly.faces[i].length; j++) { | |
var v3 = poly.faces[i][j]; // this vertex | |
result.newV(v1+"~"+v2, util.oneThird(poly.positions[v1],poly.positions[v2])); // new v in face | |
var fname = i + "f" + v1; | |
result.newFlag(fname, "f"+i, v1+"~"+v2); // five new flags | |
result.newFlag(fname, v1+"~"+v2, v2+"~"+v1); | |
result.newFlag(fname, v2+"~"+v1, "v"+v2); | |
result.newFlag(fname, "v"+v2, v2+"~"+v3); | |
result.newFlag(fname, v2+"~"+v3, "f"+i); | |
v1 = v2; // shift over one | |
v2 = v3; | |
} | |
} | |
var ans = result.flags2poly(); | |
ans.name = "g" + poly.name; | |
canonicalize.adjustpositions(ans, 3); // canonicalize lightly | |
return (ans); | |
} | |
exports.gyro = gyro; | |
function propellor(poly) { // compute propellor of argument | |
var result = new Assembler(); | |
for (var i=0; i<poly.positions.length; i++) | |
result.newV("v"+i, util.unit(poly.positions[i])); // each old vertex is a new vertex | |
for (var i=0; i<poly.faces.length; i++) { | |
var v1 = poly.faces[i][poly.faces[i].length-2]; // preprevious vertex | |
var v2 = poly.faces[i][poly.faces[i].length-1]; // previous vertex | |
for (var j=0; j<poly.faces[i].length; j++) { | |
var v3 = poly.faces[i][j]; // this vertex | |
result.newV(v1+"~"+v2, util.oneThird(poly.positions[v1],poly.positions[v2])); // new v in face | |
var fname = i + "f" + v2; | |
result.newFlag("v"+i, v1+"~"+v2, v2+"~"+v3); // five new flags | |
result.newFlag(fname, v1+"~"+v2, v2+"~"+v1); | |
result.newFlag(fname, v2+"~"+v1, "v"+v2); | |
result.newFlag(fname, "v"+v2, v2+"~"+v3); | |
result.newFlag(fname, v2+"~"+v3, v1+"~"+v2); | |
v1 = v2; // shift over one | |
v2 = v3; | |
} | |
} | |
var ans = result.flags2poly(); | |
ans.name = "p" + poly.name; | |
canonicalize.adjustpositions(ans, 3); // canonicalize lightly | |
return (ans); | |
} | |
exports.propellor = propellor; | |
function reflect(poly) { // compute reflection through origin | |
poly = util.clone(poly); | |
for (var i=0; i<poly.positions.length; i++) | |
poly.positions[i] = util.mult(-1, poly.positions[i]); // reflect each point | |
for (var i=0; i<poly.faces.length; i++) | |
poly.faces[i] = poly.faces[i].reverse(); // repair clockwise-ness | |
poly.name = "r" + poly.name; | |
canonicalize.adjustpositions(poly, 1); // build dual | |
return (poly); | |
} | |
exports.reflect = reflect; | |
exports.expand = function(poly) { | |
return ambo(ambo(poly)); | |
} | |
exports.bevel = function(poly) { | |
return truncate(ambo(poly)); | |
} | |
exports.ortho = function(poly) { | |
return join(join(poly)); | |
} | |
exports.meta = function(poly) { | |
return kis(join(poly)); | |
} | |
exports.truncate = function(poly, n) { | |
return dual(kis(dual(poly), n)); | |
} | |
exports.join = function(poly) { | |
return dual(ambo(dual(poly))); | |
} | |
exports.split = function(poly) { | |
return dual(gyro(dual(poly))); | |
} | |
},{"./assembler.js":1,"./canonicalize.js":2,"./dual.js":3,"./util.js":6}],5:[function(require,module,exports){ | |
"use strict"; | |
var util = require("./util.js"); | |
var canonicalize = require("./canonicalize.js"); | |
module.exports = { | |
tetrahedron: function() { | |
return { | |
name: "T", | |
faces: [ [0,1,2], [0,2,3], [0,3,1], [1,3,2] ], | |
positions: [ [1.,1.,1.], [1.,-1.,-1.], [-1.,1.,-1.], [-1.,-1.,1.] ] | |
}; | |
}, | |
octahedron: function() { | |
return { | |
name: "O", | |
faces: [ [0,1,2], [0,2,3], [0,3,4], [0,4,1], [1,4,5], [1,5,2], [2,5,3], [3,5,4] ], | |
positions: [ [0,0,1.414], [1.414,0,0], [0,1.414,0], [-1.414,0,0], [0,-1.414,0], [0,0,-1.414] ] | |
}; | |
}, | |
cube: function() { | |
return { | |
name: "C", | |
faces: [ [3,0,1,2], [3,4,5,0], [0,5,6,1], [1,6,7,2], [2,7,4,3], [5,4,7,6] ], | |
positions: [ [ 0.707, 0.707,0.707], [-0.707,0.707,0.707], | |
[-0.707,-0.707,0.707], [0.707,-0.707,0.707], | |
[0.707,-0.707,-0.707], [0.707,0.707,-0.707], | |
[-0.707,0.707,-0.707], [-0.707,-0.707,-0.707] ] | |
}; | |
}, | |
icosahedron: function() { | |
return { | |
name: "I", | |
faces: [ [0,1,2], [0,2,3], [0,3,4], [0,4,5], | |
[0,5,1], [1,5,7], [1,7,6], [1,6,2], | |
[2,6,8], [2,8,3], [3,8,9], [3,9,4], | |
[4,9,10], [4,10,5], [5,10,7], [6,7,11], | |
[6,11,8], [7,10,11], [8,11,9], [9,11,10] ], | |
positions: [ [0,0,1.176], [1.051,0,0.526], | |
[0.324,1.,0.525], [-0.851,0.618,0.526], | |
[-0.851,-0.618,0.526], [0.325,-1.,0.526], | |
[0.851,0.618,-0.526], [0.851,-0.618,-0.526], | |
[-0.325,1.,-0.526], [-1.051,0,-0.526], | |
[-0.325,-1.,-0.526], [0,0,-1.176] ] | |
}; | |
}, | |
dodecahedron: function() { | |
return { | |
name: "D", | |
faces: [ [0,1,4,7,2], [0,2,6,9,3], [0,3,8,5,1], | |
[1,5,11,10,4], [2,7,13,12,6], [3,9,15,14,8], | |
[4,10,16,13,7], [5,8,14,17,11], [6,12,18,15,9], | |
[10,11,17,19,16], [12,13,16,19,18], [14,15,18,19,17] ], | |
positions: [ [0,0,1.07047], [0.713644,0,0.797878], | |
[-0.356822,0.618,0.797878], [-0.356822,-0.618,0.797878], | |
[0.797878,0.618034,0.356822], [0.797878,-0.618,0.356822], | |
[-0.934172,0.381966,0.356822], [0.136294,1.,0.356822], | |
[0.136294,-1.,0.356822], [-0.934172,-0.381966,0.356822], | |
[0.934172,0.381966,-0.356822], [0.934172,-0.381966,-0.356822], | |
[-0.797878,0.618,-0.356822], [-0.136294,1.,-0.356822], | |
[-0.136294,-1.,-0.356822], [-0.797878,-0.618034,-0.356822], | |
[0.356822,0.618,-0.797878], [0.356822,-0.618,-0.797878], | |
[-0.713644,0,-0.797878], [0,0,-1.07047] ] | |
}; | |
}, | |
prism: function(n) { | |
var theta = Math.PI * 2.0 / n; | |
var h = Math.sin(theta/2); | |
var positions = []; | |
for (var i=0; i<n; i++) { | |
positions.push([Math.cos(i*theta), Math.sin(i*theta), h]); | |
} | |
for (var i=0; i<n; i++) { | |
positions.push([Math.cos(i*theta), Math.sin(i*theta),-h]); | |
} | |
var faces = [ util.sequence(n-1, 0), util.sequence(n, 2*n-1) ]; | |
for(var i=0; i<n; ++i) { | |
faces.push([i, (i+1)%n, (i+1)%n+n, i+n]); | |
} | |
var result = { | |
name: "P" + n, | |
positions: positions, | |
faces: faces | |
}; | |
canonicalize.adjustpositions(result, 1); | |
return result; | |
}, | |
antiprism: function(n) { | |
var theta = Math.PI * 2.0 / n; | |
var h = Math.sqrt(1-4/(4+2*Math.cos(theta/2)-2*Math.cos(theta))); | |
var r = Math.sqrt(1-h*h); | |
var f = Math.sqrt(h*h + Math.pow(r*Math.cos(theta/2), 2)); | |
r=r/f; | |
h=h/f; | |
var positions = []; | |
for (var i=0; i<n; i++) { | |
positions.push([r*Math.cos(i*theta), r*Math.sin(i*theta), h]); | |
} | |
for (var i=0; i<n; i++) { | |
positions.push([r*Math.cos((i+0.5)*theta), r*Math.sin((i+0.5)*theta), -h]); | |
} | |
var faces = [ util.sequence(n-1, 0), util.sequence(n, 2*n-1) ] | |
for (var i=0; i<n; i++) { | |
faces.push([i, (i+1)%n, i+n]); | |
faces.push([i, i+n, ((n+i-1)%n+n)]); | |
} | |
var result = { | |
name: "A" + n, | |
positions: positions, | |
faces: faces | |
}; | |
canonicalize.adjustpositions(result, 1); | |
return result; | |
}, | |
pyramid: function(n) { | |
var theta = Math.PI * 2.0 / n; | |
var positions = []; | |
for(var i=0; i<n; ++i) { | |
positions.push([Math.cos(i*theta), Math.sin(i*theta), .2]); | |
} | |
positions.push([0, 0, -2]); | |
var faces = [ util.sequence(n-1, 0) ]; | |
for (var i=0; i<n; ++i) { | |
faces.push([i, (i+1)%n, n]); | |
} | |
var result = { | |
name: "Y" + n, | |
positions: positions, | |
faces: faces | |
}; | |
canonicalize.canonicalpositions(result, 3); | |
return result; | |
} | |
} | |
},{"./canonicalize.js":2,"./util.js":6}],6:[function(require,module,exports){ | |
"use strict"; | |
function clone(poly) { | |
var npositions = new Array(poly.positions.length); | |
for(var i=0; i<poly.positions.length; ++i) { | |
npositions[i] = poly.positions[i].slice(0); | |
} | |
var nfaces = []; | |
for(var i=0; i<poly.faces.length; ++i) { | |
nfaces[i] = poly.faces[i].slice(0); | |
} | |
return { | |
name: poly.name.slice(0), | |
positions: npositions, | |
faces: nfaces | |
} | |
} | |
exports.clone = clone; | |
function intersect(set1, set2, set3) { // find element common to 3 sets | |
for (var i=0; i<set1.length; i++) { // by brute force search | |
for (var j=0; j<set2.length; j++) { | |
if (set1[i]===set2[j]) { | |
for (var k=0; k<set3.length; k++) { | |
if (set1[i]===set3[k]) { | |
return set1[i]; | |
} | |
} | |
} | |
} | |
} | |
throw new Error("program bug in intersect()"); | |
return null; | |
} | |
exports.intersect = intersect; | |
function sequence(start, stop) { // make list of integers, inclusive | |
var ans = new Array(); | |
if (start <= stop) { | |
for (var i=start; i<=stop; i++) { | |
ans.push(i); | |
} | |
} else { | |
for (var i=start; i>=stop; i--) { | |
ans.push(i); | |
} | |
} | |
return ans; | |
} | |
exports.sequence = sequence; | |
function orthogonal(v3, v2, v1) { // find unit vector orthog to plane of 3 pts | |
var d1 = sub(v2, v1); // adjacent edge vectors | |
var d2 = sub(v3, v2); | |
return [ d1[1]*d2[2] - d1[2]*d2[1], // cross product | |
d1[2]*d2[0] - d1[0]*d2[2], | |
d1[0]*d2[1] - d1[1]*d2[0] ] | |
} | |
exports.orthogonal = orthogonal; | |
function mag2(vec) { // magnitude squared of 3-vector | |
return vec[0]*vec[0] + vec[1]*vec[1] + vec[2]*vec[2]; | |
} | |
exports.mag2 = mag2; | |
function tangentPoint(v1, v2) { // point where line v1...v2 tangent to an origin sphere | |
var d = sub(v2,v1); // difference vector | |
console.log(d); | |
return(sub(v1, mult(dot(d,v1)/mag2(d), d))); | |
} | |
exports.tangentPoint = tangentPoint; | |
function edgeDist(v1, v2) { // distance of line v1...v2 to origin | |
return(Math.sqrt(mag2(tangentPoint(v1, v2)))); | |
} | |
exports.edgeDist = edgeDist; | |
function vecZero() { | |
return [0.0,0.0,0.0]; | |
} | |
exports.vecZero = vecZero; | |
function mult(c, vec) { // c times 3-vector | |
return [ c*vec[0], | |
c*vec[1], | |
c*vec[2] ]; | |
} | |
exports.mult = mult; | |
function add(vec1, vec2) { // sum two 3-vectors | |
return [ vec1[0]+vec2[0], | |
vec1[1]+vec2[1], | |
vec1[2]+vec2[2] ]; | |
} | |
exports.add = add; | |
function sub(vec1, vec2) { // subtract two 3-vectors | |
return [ vec1[0]-vec2[0], | |
vec1[1]-vec2[1], | |
vec1[2]-vec2[2] ] | |
} | |
exports.sub = sub; | |
function dot(vec1, vec2) { // dot product two 3-vectors | |
return (vec1[0]*vec2[0] + vec1[1]*vec2[1] + vec1[2]*vec2[2]); | |
} | |
exports.dot = dot; | |
function midpoint(vec1, vec2) { // mean of two 3-vectors | |
return [ 0.5*(vec1[0] + vec2[0]), | |
0.5*(vec1[1] + vec2[1]), | |
0.5*(vec1[2] + vec2[2]) ] | |
} | |
exports.midpoint = midpoint; | |
function oneThird(vec1, vec2) { // approx. (2/3)v1 + (1/3)v2 (assumes 3-vector) | |
return [ 0.7*vec1[0] + 0.3*vec2[0], | |
0.7*vec1[1] + 0.3*vec2[1], | |
0.7*vec1[2] + 0.3*vec2[2] ] | |
return ans; | |
} | |
exports.oneThird = oneThird; | |
function reciprocal(vec) { // reflect 3-vector in unit sphere | |
var factor = 1./mag2(vec); | |
return [ factor*vec[0], | |
factor*vec[1], | |
factor*vec[2] ] | |
} | |
exports.reciprocal = reciprocal; | |
function unit(vec) { // normalize 3-vector to unit magnitude | |
var size = mag2(vec); | |
if (size <= 1e-8) { // remove this test someday... | |
return (vec); | |
} | |
var c = 1./Math.sqrt(size); | |
return mult(c, vec); | |
} | |
exports.unit = unit; | |
},{}],"conway-hart":[function(require,module,exports){ | |
"use strict"; | |
//Import operators | |
var seeds = require("./lib/seeds.js"); | |
var operators = require("./lib/operators.js"); | |
//Seed types | |
var SEED_FUNCS = { | |
"T": seeds.tetrahedron, | |
"O": seeds.octahedron, | |
"C": seeds.cube, | |
"I": seeds.icosahedron, | |
"D": seeds.dodecahedron, | |
"P": seeds.prism, | |
"A": seeds.antiprism, | |
"Y": seeds.pyramid | |
}; | |
//Operator types | |
var OPERATOR_FUNCS = { | |
"k": operators.kis, | |
"a": operators.ambo, | |
"g": operators.gyro, | |
"p": operators.propellor, | |
"d": operators.dual, | |
"r": operators.reflect, | |
"c": operators.canonicalize | |
}; | |
//Checks if a seed is a token | |
function isToken(c) { | |
return "kagpdcrTOCIDPAY".indexOf(c) >= 0; | |
} | |
//Checks if a value is numeric | |
function isNumeric(c) { | |
return 48 <= c && c <= 57; | |
} | |
//Tokenize an expression in Conway notation | |
function tokenize(expr) { | |
expr = expr.replace(/P4$/g, "C") // P4 --> C (C is prism) | |
.replace(/A3$/g, "O") // A3 --> O (O is antiprism) | |
.replace(/Y3$/g, "T") // Y3 --> T (T is pyramid) | |
.replace(/e/g, "aa") // e --> aa (abbr. for explode) | |
.replace(/b/g, "ta") // b --> ta (abbr. for bevel) | |
.replace(/o/g, "jj") // o --> jj (abbr. for ortho) | |
.replace(/m/g, "kj") // m --> kj (abbr. for meta) | |
.replace(/t(\d*)/g, "dk$1d") // t(n) --> dk(n)d (dual operations) | |
.replace(/j/g, "dad") // j --> dad (dual operations) | |
.replace(/s/g, "dgd") // s --> dgd (dual operations) | |
.replace(/dd/g, "") // dd --> null (order 2) | |
.replace(/ad/g, "a") // ad --> a (a_ = ad_) | |
.replace(/gd/g, "g") // gd --> g (g_ = gd_) | |
.replace(/aY/g, "A") // aY --> A (interesting fact) | |
.replace(/dT/g, "T") // dT --> T (self-dual) | |
.replace(/gT/g, "D") // gT --> D (symm change) | |
.replace(/aT/g, "O") // aT --> O (symm change) | |
.replace(/dC/g, "O") // dC --> O (dual pair) | |
.replace(/dO/g, "C") // dO --> C (dual pair) | |
.replace(/dI/g, "D") // dI --> D (dual pair) | |
.replace(/dD/g, "I") // dD --> I (dual pair) | |
.replace(/aO/g, "aC") // aO --> aC (for uniqueness) | |
.replace(/aI/g, "aD") // aI --> aD (for uniqueness) | |
.replace(/gO/g, "gC") // gO --> gC (for uniqueness) | |
.replace(/gI/g, "gD"); // gI --> gD (for uniqueness) | |
var toks = []; | |
var ptr = 0; | |
while(ptr < expr.length) { | |
var op = expr.charAt(ptr); | |
if(!isToken(op)) { | |
throw new Error("Unexpected token: " + c + " in input " + expr + " at " + ptr); | |
} | |
var start_n = ++ptr; | |
while(ptr < expr.length && isNumeric(expr.charCodeAt(ptr))) { | |
++ptr; | |
} | |
var n = parseInt(expr.substr(start_n, ptr)); | |
toks.push({ | |
op: op, | |
n: n | 0 | |
}); | |
} | |
toks.reverse(); | |
return toks; | |
} | |
//Main expression interpreter | |
function evalConwayHart(expr) { | |
//Parse expression | |
var toks = tokenize(expr); | |
//Initialize seed | |
var ctor = SEED_FUNCS[toks[0].op]; | |
if(!ctor) { | |
throw Error("Invalid seed type: " + JSON.stringify(ops[0])); | |
} else if("PAY".indexOf(toks[0].op) >= 0) { | |
if(toks[0].n < 3) { | |
throw Error("Invalid number of faces for seed"); | |
} | |
} else if(toks[0].n !== 0) { | |
throw Error("Seed " + toks[0].op + " does not use a parameter"); | |
} | |
var poly = ctor(toks[0].n); | |
//Apply operators | |
for(var i=1; i<toks.length; ++i) { | |
var op = OPERATOR_FUNCS[toks[i].op]; | |
if(!op) { | |
throw Error("Invalid operator: " + toks[i]); | |
} | |
poly = op(poly, toks[i].n); | |
} | |
return { name: poly.name, cells: poly.faces, positions: poly.positions }; | |
} | |
module.exports = evalConwayHart; | |
},{"./lib/operators.js":4,"./lib/seeds.js":5}]},{},[]) | |
//# 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e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})","function Assembler() {\n  this.flags      = {};\n  this.positions  = {};\n  this.faces      = {};\n}\n\nAssembler.prototype.newFlag = function(face, v1, v2) {\n  if (!this.flags[face]) {\n    this.flags[face] = { };\n  }\n  this.flags[face][v1] = v2;\n}\n\nAssembler.prototype.newV = function(name, p) {\n  this.positions[name] = p;\n}\n\nAssembler.prototype.flags2poly = function() {\n  var rpositions = [];\n  var verts      = {};\n  for (var i in this.positions) {\n    verts[i] = rpositions.length;\n    rpositions.push(this.positions[i]);\n  }\n  var rfaces = [];\n  for (var i in this.flags) {\n    var flag = this.flags[i];\n    var f = [];\n    var v0 = Object.keys(flag)[0];\n    var v = v0;\n    do {\n      f.push(verts[v]);\n      v = flag[v];\n    } while (v != v0);\n    rfaces.push(f);\n  }\n  return {\n    name:       \"?\",\n    positions:  rpositions,\n    faces:      rfaces\n  };\n}\n\nmodule.exports = Assembler;\n","//-------------------Canonicalization Algorithm--------------------------\n// True canonicalization rather slow.  Using center of gravity of vertices for each\n// face gives a quick \"adjustment\" which planarizes faces at least.\n\"use strict\";\n\nvar util = require(\"./util.js\");\nvar makeDual = require(\"./dual.js\");\n\nfunction reciprocalN(poly) {    // make array of vertices reciprocal to given planes\n  var ans = new Array(poly.faces.length);\n  for (var i=0; i<poly.faces.length; ++i) {    // for each face:\n    var centroid = [0.0, 0.0, 0.0];           // running sum of vertex coords\n    var normal = [0.0, 0.0, 0.0];             // running sum of normal vectors\n    var avgEdgeDist = 0.;               // running sum for avg edge distance\n    var v1 = poly.faces[i][poly.faces[i].length-2];  // preprevious vertex\n    var v2 = poly.faces[i][poly.faces[i].length-1];  // previous vertex\n    for (var j=0; j<poly.faces[i].length; j++)  {\n      var v3 = poly.faces[i][j];                  // this vertex\n      centroid = util.add(centroid, poly.positions[v3]);\n      normal = util.add(normal, util.orthogonal(poly.positions[v1], poly.positions[v2], poly.positions[v3]));\n      avgEdgeDist = avgEdgeDist + util.edgeDist(poly.positions[v1], poly.positions[v2]);\n      v1 = v2;                                   // shift over one\n      v2 = v3;\n    }\n    centroid = util.mult(1.0/poly.faces[i].length, centroid);\n    normal = util.unit(normal);\n    avgEdgeDist = avgEdgeDist / poly.faces[i].length;\n    ans[i] = util.reciprocal(util.mult(util.dot(centroid, normal), normal));  // based on face\n    ans[i] = util.mult((1+avgEdgeDist)/2, ans[i]);                  // edge correction\n  }\n  return (ans);\n}\n\nfunction reciprocalC(poly) {           // return array of reciprocals of face centers\n  var center = faceCenters(poly);\n  for (var i=0; i<poly.faces.length; i++) {\n    var m2 = center[i][0]*center[i][0] + center[i][1]*center[i][1] + center[i][2]*center[i][2];\n    center[i][0] = center[i][0] / m2;   // divide each coord by magnitude squared\n    center[i][1] = center[i][1] / m2;\n    center[i][2] = center[i][2] / m2;\n  }\n  return(center);\n}\n\nfunction faceCenters(poly) {              // return array of \"face centers\"\n  var ans = new Array(poly.faces.length);\n  for (var i=0; i<poly.faces.length; i++) {\n    ans[i] = util.vecZero();                      // running sum\n    for (var j=0; j<poly.faces[i].length; j++)    // just average vertex coords:\n      ans[i] = util.add(ans[i], poly.positions[poly.faces[i][j]]);  // sum and...\n    ans[i] = util.mult(1./poly.faces[i].length, ans[i]);        // ...divide by n\n  }\n  return (ans);\n}\nexports.faceCenters = faceCenters;\n\nfunction canonicalpositions(poly, nIterations) {      // compute new vertex coords.\n  var dpoly = makeDual(poly)     // v's of dual are in order or arg's f's\n  for (var count=0; count<nIterations; count++) {    // iteration:\n    dpoly.positions = reciprocalN(poly);\n    poly.positions = reciprocalN(dpoly);\n  }\n}\nexports.canonicalpositions = canonicalpositions;\n\nfunction adjustpositions(poly, nIterations) {\n  var dpoly = makeDual(poly)     // v's of dual are in order or arg's f's\n  for (var count=0; count<1; count++) {    // iteration:\n    dpoly.positions = reciprocalC(poly);             // reciprocate face centers\n    poly.positions = reciprocalC(dpoly);             // reciprocate face centers\n  }\n}\nexports.adjustpositions = adjustpositions;\n","//--------------------------------Dual------------------------------------------\n// the makeDual function computes the dual's topology, needed for canonicalization,\n// where positions's are determined.  It is then saved in a global variable globSavedDual.\n// when the d operator is executed, d just returns the saved value.\n\n\"use strict\";\n\nvar Assembler = require(\"./assembler.js\");\nvar util = require(\"./util.js\");\n\nmodule.exports = function(poly) {   // compute dual of argument, matching V and F indices\n  var result = new Assembler();\n  var faces = new Array(poly.positions.length); // make table of face as fn of edge\n  for (var i=0; i<poly.positions.length; i++) {\n    faces[i] = new Object();    // create empty associative table\n  }\n  for (var i=0; i<poly.faces.length; i++) {\n    var v1 = poly.faces[i][poly.faces[i].length-1];  // previous vertex\n    for (j=0; j<poly.faces[i].length; j++) {\n      var v2 = poly.faces[i][j];                  // this vertex\n      faces[v1][\"v\" + v2] = i;    // fill it.  2nd index is associative\n      v1 = v2;                                   // current becomes previous\n    }\n  }\n  for (var i=0; i<poly.faces.length; i++) {         // create d's v's per p's f's\n    result.newV(i, [0,0,0]);                      // only topology needed for canonicalize\n  }\n  for (var i=0; i<poly.faces.length; i++) {       // one new flag for each old one\n    var v1 = poly.faces[i][poly.faces[i].length-1];  // previous vertex\n    for (j=0; j<poly.faces[i].length; j++) {\n      var v2 = poly.faces[i][j];                  // this vertex\n      result.newFlag(v1, faces[v2][\"v\" + v1], i);        // look up face across edge\n      v1 = v2;                                   // current becomes previous\n    }\n  }\n  var ans = result.flags2poly();      // this gives one indexing of answer\n  var sortF = new Array(ans.faces.length);     // but f's of dual are randomly ordered, so sort\n  for (var i=0; i<ans.faces.length; i++) {\n    var j = util.intersect(poly.faces[ans.faces[i][0]],poly.faces[ans.faces[i][1]],poly.faces[ans.faces[i][2]]);\n    sortF[j] = ans.faces[i];  // p's v for d's f is common to three of p's f's\n  }\n  ans.faces = sortF;            // replace with the sorted list of faces\n  if(poly.name) {\n    if (poly.name.substr(0,1)!=\"d\") {\n      ans.name = \"d\" + poly.name;        // dual name is same with \"d\" added...\n    } else {\n      ans.name = poly.name.substr(1);    // ...or removed\n    }\n  }\n  return ans;\n}\n","\"use strict\";\n\nvar util = require(\"./util.js\");\nvar makeDual = require(\"./dual.js\");\nvar Assembler = require(\"./assembler.js\");\nvar canonicalize = require(\"./canonicalize.js\");\n\nexports.dual = function(poly) {\n  var dpoly = makeDual(poly);\n  dpoly.positions = canonicalize.faceCenters(poly);\n  return dpoly;\n}\n\nexports.canonicalize = function(poly) {\n  poly = util.clone(poly);\n  canonicalize.canonicalpositions(poly);\n  return poly;\n}\n\nfunction kis(poly, n) {     // only kis n-sided faces, but n==0 means kiss all.\n  var result = new Assembler();\n  for (var i=0; i<poly.positions.length; i++) {\n    result.newV(\"v\"+i, poly.positions[i]);              // each old vertex is a new vertex\n  }\n  var centers = canonicalize.faceCenters(poly);           // new vertices in centers of n-sided face\n  var foundAny = false;                      // alert if don't find any\n  for (var i=0; i<poly.faces.length; i++) {\n    var v1 = \"v\" + poly.faces[i][poly.faces[i].length-1];  // previous vertex\n    for (var j=0; j<poly.faces[i].length; j++)  {\n      var v2 = \"v\" + poly.faces[i][j];                  // this vertex\n      if (poly.faces[i].length == n || n==0) {    // kiss the n's, or all\n        foundAny = true;                // flag that we found some\n        result.newV(\"f\"+i, centers[i]);        // new vertex in face center\n        var fname = i + v1;\n        result.newFlag(fname, v1, v2);         // three new flags, if n-sided\n        result.newFlag(fname, v2, \"f\"+i);\n        result.newFlag(fname, \"f\"+i, v1);\n      }\n      else\n        result.newFlag(i, v1, v2);             // same old flag, if non-n\n      v1 = v2;                           // current becomes previous\n    }\n  }\n  var ans = result.flags2poly();\n  ans.name = \"k\" + (n===0?\"\":n) + poly.name;\n  canonicalize.adjustpositions(ans, 3);               // adjust and\n  return (ans);\n}\nexports.kis = kis;\n\nfunction ambo(poly) {                      // compute ambo of argument\n  var result = new Assembler();\n  for (var i=0; i<poly.faces.length; i++) {\n    var v1 = poly.faces[i][poly.faces[i].length-2];  // preprevious vertex\n    var v2 = poly.faces[i][poly.faces[i].length-1];  // previous vertex\n    for (var j=0; j<poly.faces[i].length; j++)  {\n      var v3 = poly.faces[i][j];        // this vertex\n      if (v1 < v2)                     // new vertices at edge midpoints\n        result.newV(midName(v1,v2), util.midpoint(poly.positions[v1],poly.positions[v2]));\n      result.newFlag(\"f\"+i, midName(v1,v2), midName(v2,v3));     // two new flags\n      result.newFlag(\"v\"+v2, midName(v2,v3), midName(v1,v2));\n      v1 = v2;                         // shift over one\n      v2 = v3;\n    }\n  }\n  var ans = result.flags2poly();\n  ans.name = \"a\" + poly.name;\n  canonicalize.adjustpositions(ans, 2);             // canonicalize lightly\n  return (ans);\n}\nexports.ambo = ambo;\n\nfunction midName(v1,v2) {              // unique symbolic name, e.g. \"1_2\"\n  if (v1<v2)\n    return (v1 + \"_\" + v2);\n  else\n    return (v2 + \"_\" + v1);\n}\n\nfunction gyro(poly) {                      // compute gyro of argument\n  var result = new Assembler();\n  for (var i=0; i<poly.positions.length; i++)\n    result.newV(\"v\"+i, util.unit(poly.positions[i]));           // each old vertex is a new vertex\n  var centers = canonicalize.faceCenters(poly);              // new vertices in center of each face\n  for (var i=0; i<poly.faces.length; i++)\n    result.newV(\"f\"+i, util.unit(centers[i]));\n  for (var i=0; i<poly.faces.length; i++) {\n    var v1 = poly.faces[i][poly.faces[i].length-2];  // preprevious vertex\n    var v2 = poly.faces[i][poly.faces[i].length-1];  // previous vertex\n    for (var j=0; j<poly.faces[i].length; j++)  {\n      var v3 = poly.faces[i][j];                  // this vertex\n      result.newV(v1+\"~\"+v2, util.oneThird(poly.positions[v1],poly.positions[v2]));  // new v in face\n      var fname = i + \"f\" + v1;\n      result.newFlag(fname, \"f\"+i, v1+\"~\"+v2);          // five new flags\n      result.newFlag(fname, v1+\"~\"+v2, v2+\"~\"+v1);\n      result.newFlag(fname, v2+\"~\"+v1, \"v\"+v2);\n      result.newFlag(fname, \"v\"+v2, v2+\"~\"+v3);\n      result.newFlag(fname, v2+\"~\"+v3, \"f\"+i);\n      v1 = v2;                                   // shift over one\n      v2 = v3;\n    }\n  }\n  var ans = result.flags2poly();\n  ans.name = \"g\" + poly.name;\n  canonicalize.adjustpositions(ans, 3);                       // canonicalize lightly\n  return (ans);\n}\nexports.gyro = gyro;\n\nfunction propellor(poly) {                             // compute propellor of argument\n  var result = new Assembler();\n  for (var i=0; i<poly.positions.length; i++)\n    result.newV(\"v\"+i, util.unit(poly.positions[i]));           // each old vertex is a new vertex\n  for (var i=0; i<poly.faces.length; i++) {\n    var v1 = poly.faces[i][poly.faces[i].length-2];  // preprevious vertex\n    var v2 = poly.faces[i][poly.faces[i].length-1];  // previous vertex\n    for (var j=0; j<poly.faces[i].length; j++)  {\n      var v3 = poly.faces[i][j];                  // this vertex\n      result.newV(v1+\"~\"+v2, util.oneThird(poly.positions[v1],poly.positions[v2]));  // new v in face\n      var fname = i + \"f\" + v2;\n      result.newFlag(\"v\"+i, v1+\"~\"+v2, v2+\"~\"+v3);      // five new flags\n      result.newFlag(fname, v1+\"~\"+v2, v2+\"~\"+v1);\n      result.newFlag(fname, v2+\"~\"+v1, \"v\"+v2);\n      result.newFlag(fname, \"v\"+v2, v2+\"~\"+v3);\n      result.newFlag(fname, v2+\"~\"+v3, v1+\"~\"+v2);\n      v1 = v2;                                   // shift over one\n      v2 = v3;\n    }\n  }\n  var ans = result.flags2poly();\n  ans.name = \"p\" + poly.name;\n  canonicalize.adjustpositions(ans, 3);                       // canonicalize lightly\n  return (ans);\n}\nexports.propellor = propellor;\n\nfunction reflect(poly) {                              // compute reflection through origin\n  poly = util.clone(poly);\n  for (var i=0; i<poly.positions.length; i++)\n    poly.positions[i] = util.mult(-1, poly.positions[i]);           // reflect each point\n  for (var i=0; i<poly.faces.length; i++)\n    poly.faces[i] = poly.faces[i].reverse();         // repair clockwise-ness\n  poly.name = \"r\" + poly.name;\n  canonicalize.adjustpositions(poly, 1);                     // build dual\n  return (poly);\n}\nexports.reflect = reflect;\n\n\nexports.expand = function(poly) {\n  return ambo(ambo(poly));\n}\n\nexports.bevel = function(poly) {\n  return truncate(ambo(poly));\n}\n\nexports.ortho = function(poly) {\n  return join(join(poly));\n}\n\nexports.meta = function(poly) {\n  return kis(join(poly));\n}\n\nexports.truncate = function(poly, n) {\n  return dual(kis(dual(poly), n));\n}\n\nexports.join = function(poly) {\n  return dual(ambo(dual(poly)));\n}\n\nexports.split = function(poly) {\n  return dual(gyro(dual(poly)));\n}\n","\"use strict\";\n\nvar util          = require(\"./util.js\");\nvar canonicalize  = require(\"./canonicalize.js\");\n\nmodule.exports = {\n  tetrahedron: function() {\n    return {\n      name:       \"T\",\n      faces:      [ [0,1,2], [0,2,3], [0,3,1], [1,3,2] ],\n      positions:  [ [1.,1.,1.], [1.,-1.,-1.], [-1.,1.,-1.], [-1.,-1.,1.] ]\n    };\n  },\n  octahedron: function() {\n    return {\n      name:       \"O\",\n      faces:      [ [0,1,2], [0,2,3], [0,3,4], [0,4,1], [1,4,5], [1,5,2], [2,5,3], [3,5,4] ],\n      positions:  [ [0,0,1.414], [1.414,0,0], [0,1.414,0], [-1.414,0,0], [0,-1.414,0], [0,0,-1.414] ]\n    };\n  },\n  cube: function() {\n    return {\n      name:       \"C\",\n      faces:      [ [3,0,1,2], [3,4,5,0], [0,5,6,1], [1,6,7,2], [2,7,4,3], [5,4,7,6] ],\n      positions:  [ [ 0.707, 0.707,0.707], [-0.707,0.707,0.707],\n                    [-0.707,-0.707,0.707], [0.707,-0.707,0.707],\n                    [0.707,-0.707,-0.707], [0.707,0.707,-0.707],\n                    [-0.707,0.707,-0.707], [-0.707,-0.707,-0.707] ]\n    };\n  },\n  icosahedron: function() {\n    return {\n      name:       \"I\",\n      faces:      [ [0,1,2],  [0,2,3],   [0,3,4],  [0,4,5],\n                    [0,5,1],  [1,5,7],   [1,7,6],  [1,6,2],\n                    [2,6,8],  [2,8,3],   [3,8,9],  [3,9,4],\n                    [4,9,10], [4,10,5],  [5,10,7], [6,7,11],\n                    [6,11,8], [7,10,11], [8,11,9], [9,11,10] ],\n      positions:  [ [0,0,1.176],            [1.051,0,0.526],\n                    [0.324,1.,0.525],       [-0.851,0.618,0.526],\n                    [-0.851,-0.618,0.526],  [0.325,-1.,0.526],\n                    [0.851,0.618,-0.526],   [0.851,-0.618,-0.526],\n                    [-0.325,1.,-0.526],     [-1.051,0,-0.526],\n                    [-0.325,-1.,-0.526],    [0,0,-1.176] ]\n\n    };\n  },\n  dodecahedron: function() {\n    return {\n      name:       \"D\",\n      faces:      [ [0,1,4,7,2],      [0,2,6,9,3],      [0,3,8,5,1],\n                    [1,5,11,10,4],    [2,7,13,12,6],    [3,9,15,14,8],\n                    [4,10,16,13,7],   [5,8,14,17,11],   [6,12,18,15,9],\n                    [10,11,17,19,16], [12,13,16,19,18], [14,15,18,19,17] ],\n      positions:  [ [0,0,1.07047], [0.713644,0,0.797878],\n                    [-0.356822,0.618,0.797878], [-0.356822,-0.618,0.797878],\n                    [0.797878,0.618034,0.356822], [0.797878,-0.618,0.356822],\n                    [-0.934172,0.381966,0.356822], [0.136294,1.,0.356822],\n                    [0.136294,-1.,0.356822], [-0.934172,-0.381966,0.356822],\n                    [0.934172,0.381966,-0.356822], [0.934172,-0.381966,-0.356822],\n                    [-0.797878,0.618,-0.356822], [-0.136294,1.,-0.356822],\n                    [-0.136294,-1.,-0.356822], [-0.797878,-0.618034,-0.356822],\n                    [0.356822,0.618,-0.797878], [0.356822,-0.618,-0.797878],\n                    [-0.713644,0,-0.797878], [0,0,-1.07047] ]\n    };\n  },\n  prism: function(n) {\n    var theta     = Math.PI * 2.0 / n;\n    var h         = Math.sin(theta/2);\n    var positions = [];\n    for (var i=0; i<n; i++) {\n      positions.push([Math.cos(i*theta), Math.sin(i*theta), h]);\n    }\n    for (var i=0; i<n; i++) {\n      positions.push([Math.cos(i*theta), Math.sin(i*theta),-h]);\n    }\n    var faces     = [ util.sequence(n-1, 0), util.sequence(n, 2*n-1) ];\n    for(var i=0; i<n; ++i) {\n      faces.push([i, (i+1)%n, (i+1)%n+n, i+n]);\n    }\n    var result = {\n      name:       \"P\" + n,\n      positions:  positions,\n      faces:      faces\n    };\n    canonicalize.adjustpositions(result, 1);\n    return result;\n  },\n  antiprism: function(n) {\n    var theta = Math.PI * 2.0 / n;\n    var h = Math.sqrt(1-4/(4+2*Math.cos(theta/2)-2*Math.cos(theta)));\n    var r = Math.sqrt(1-h*h);\n    var f = Math.sqrt(h*h + Math.pow(r*Math.cos(theta/2), 2)); \n    r=r/f;\n    h=h/f;\n    var positions = [];\n    for (var i=0; i<n; i++) {\n      positions.push([r*Math.cos(i*theta), r*Math.sin(i*theta), h]);\n    }\n    for (var i=0; i<n; i++) {\n      positions.push([r*Math.cos((i+0.5)*theta), r*Math.sin((i+0.5)*theta), -h]);\n    }\n    var faces = [ util.sequence(n-1, 0), util.sequence(n, 2*n-1) ]\n    for (var i=0; i<n; i++) {\n      faces.push([i, (i+1)%n, i+n]);\n      faces.push([i, i+n,     ((n+i-1)%n+n)]);\n    }\n    var result = {\n      name:         \"A\" + n,\n      positions:    positions,\n      faces:        faces\n    };\n    canonicalize.adjustpositions(result, 1);\n    return result;\n  },\n  pyramid: function(n) {\n    var theta = Math.PI * 2.0 / n;\n    var positions = [];\n    for(var i=0; i<n; ++i) {\n      positions.push([Math.cos(i*theta), Math.sin(i*theta), .2]);\n    }\n    positions.push([0, 0, -2]);\n    var faces = [ util.sequence(n-1, 0) ];\n    for (var i=0; i<n; ++i) {\n      faces.push([i, (i+1)%n, n]);\n    }\n    var result = {\n      name:       \"Y\" + n,\n      positions:  positions,\n      faces:      faces\n    };\n    canonicalize.canonicalpositions(result, 3);\n    return result;\n  }\n}\n","\"use strict\";\n\nfunction clone(poly) {\n  var npositions = new Array(poly.positions.length);\n  for(var i=0; i<poly.positions.length; ++i) {\n    npositions[i] = poly.positions[i].slice(0);\n  }\n  var nfaces = [];\n  for(var i=0; i<poly.faces.length; ++i) {\n    nfaces[i] = poly.faces[i].slice(0);\n  }\n  return {\n    name: poly.name.slice(0),\n    positions: npositions,\n    faces: nfaces\n  }\n}\nexports.clone = clone;\n\nfunction intersect(set1, set2, set3) {  // find element common to 3 sets\n  for (var i=0; i<set1.length; i++) {    // by brute force search\n    for (var j=0; j<set2.length; j++) {\n      if (set1[i]===set2[j]) {\n        for (var k=0; k<set3.length; k++) {\n          if (set1[i]===set3[k]) {\n            return set1[i];\n          }\n        }\n      }\n    }\n  }\n  throw new Error(\"program bug in intersect()\");\n  return null;\n}\nexports.intersect = intersect;\n\nfunction sequence(start, stop) {    // make list of integers, inclusive\n  var ans = new Array();\n  if (start <= stop) {\n    for (var i=start; i<=stop; i++) {\n      ans.push(i);\n    }\n  } else {\n    for (var i=start; i>=stop; i--) {\n      ans.push(i);\n    }\n  }\n  return ans;\n}\nexports.sequence = sequence;\n\nfunction orthogonal(v3, v2, v1) {   // find unit vector orthog to plane of 3 pts\n  var d1 = sub(v2, v1);            // adjacent edge vectors\n  var d2 = sub(v3, v2);\n  return [  d1[1]*d2[2] - d1[2]*d2[1],    // cross product\n            d1[2]*d2[0] - d1[0]*d2[2],\n            d1[0]*d2[1] - d1[1]*d2[0] ]\n}\nexports.orthogonal = orthogonal;\n\nfunction mag2(vec) {          // magnitude squared of 3-vector\n  return vec[0]*vec[0] + vec[1]*vec[1] + vec[2]*vec[2];\n}\nexports.mag2 = mag2;\n\nfunction tangentPoint(v1, v2) {    // point where line v1...v2 tangent to an origin sphere\n  var d = sub(v2,v1);             // difference vector\n  console.log(d);\n  return(sub(v1, mult(dot(d,v1)/mag2(d), d)));\n}\nexports.tangentPoint = tangentPoint;\n\nfunction edgeDist(v1, v2) {         // distance of line v1...v2 to origin\n  return(Math.sqrt(mag2(tangentPoint(v1, v2))));\n}\nexports.edgeDist = edgeDist;\n\nfunction vecZero() {\n  return [0.0,0.0,0.0];\n}\nexports.vecZero = vecZero;\n\nfunction mult(c, vec) {       // c times 3-vector\n  return [ c*vec[0],\n           c*vec[1],\n           c*vec[2] ];\n}\nexports.mult = mult;\n\nfunction add(vec1, vec2) {    // sum two 3-vectors\n  return [  vec1[0]+vec2[0],\n            vec1[1]+vec2[1],\n            vec1[2]+vec2[2] ];\n}\nexports.add = add;\n\nfunction sub(vec1, vec2) {    // subtract two 3-vectors\n  return [  vec1[0]-vec2[0],\n            vec1[1]-vec2[1],\n            vec1[2]-vec2[2] ]\n}\nexports.sub = sub;\n\nfunction dot(vec1, vec2) {    // dot product two 3-vectors\n  return (vec1[0]*vec2[0] + vec1[1]*vec2[1] + vec1[2]*vec2[2]);\n}\nexports.dot = dot;\n\nfunction midpoint(vec1, vec2) {    // mean of two 3-vectors\n  return [  0.5*(vec1[0] + vec2[0]),\n            0.5*(vec1[1] + vec2[1]),\n            0.5*(vec1[2] + vec2[2]) ]\n}\nexports.midpoint = midpoint;\n\nfunction oneThird(vec1, vec2) {    // approx. (2/3)v1 + (1/3)v2   (assumes 3-vector)\n  return [  0.7*vec1[0] + 0.3*vec2[0],\n            0.7*vec1[1] + 0.3*vec2[1],\n            0.7*vec1[2] + 0.3*vec2[2] ]\n  return ans;\n}\nexports.oneThird = oneThird;\n\nfunction reciprocal(vec) {    // reflect 3-vector in unit sphere\n  var factor = 1./mag2(vec);\n  return [  factor*vec[0],\n            factor*vec[1],\n            factor*vec[2] ]\n}\nexports.reciprocal = reciprocal;\n\nfunction unit(vec) {          // normalize 3-vector to unit magnitude\n  var size = mag2(vec);\n  if (size <= 1e-8) {          // remove this test someday...\n    return (vec);\n  }\n  var c = 1./Math.sqrt(size);\n  return mult(c, vec);\n}\nexports.unit = unit;\n","\"use strict\";\n\n//Import operators\nvar seeds = require(\"./lib/seeds.js\");\nvar operators = require(\"./lib/operators.js\");\n\n//Seed types\nvar SEED_FUNCS = {\n  \"T\":  seeds.tetrahedron,\n  \"O\":  seeds.octahedron,\n  \"C\":  seeds.cube,\n  \"I\":  seeds.icosahedron,\n  \"D\":  seeds.dodecahedron,\n  \"P\":  seeds.prism,\n  \"A\":  seeds.antiprism,\n  \"Y\":  seeds.pyramid\n};\n\n//Operator types\nvar OPERATOR_FUNCS = {\n  \"k\":  operators.kis,\n  \"a\":  operators.ambo,\n  \"g\":  operators.gyro,\n  \"p\":  operators.propellor,\n  \"d\":  operators.dual,\n  \"r\":  operators.reflect,\n  \"c\":  operators.canonicalize\n};\n\n//Checks if a seed is a token\nfunction isToken(c) {\n  return \"kagpdcrTOCIDPAY\".indexOf(c) >= 0;\n}\n\n//Checks if a value is numeric\nfunction isNumeric(c) {\n  return 48 <= c && c <= 57;\n}\n\n//Tokenize an expression in Conway notation\nfunction tokenize(expr) {\n  expr = expr.replace(/P4$/g, \"C\")  // P4 --> C   (C is prism)\n             .replace(/A3$/g, \"O\")  // A3 --> O   (O is antiprism)\n             .replace(/Y3$/g, \"T\")  // Y3 --> T   (T is pyramid)\n             .replace(/e/g, \"aa\")   // e --> aa   (abbr. for explode)\n             .replace(/b/g, \"ta\")   // b --> ta   (abbr. for bevel)\n             .replace(/o/g, \"jj\")   // o --> jj   (abbr. for ortho)\n             .replace(/m/g, \"kj\")   // m --> kj   (abbr. for meta)\n             .replace(/t(\\d*)/g, \"dk$1d\")  // t(n) --> dk(n)d  (dual operations)\n             .replace(/j/g, \"dad\")  // j --> dad  (dual operations)\n             .replace(/s/g, \"dgd\")  // s --> dgd  (dual operations)\n             .replace(/dd/g, \"\")    // dd --> null  (order 2)\n             .replace(/ad/g, \"a\")   // ad --> a   (a_ = ad_)\n             .replace(/gd/g, \"g\")   // gd --> g   (g_ = gd_)\n             .replace(/aY/g, \"A\")   // aY --> A   (interesting fact)\n             .replace(/dT/g, \"T\")   // dT --> T   (self-dual)\n             .replace(/gT/g, \"D\")   // gT --> D   (symm change)\n             .replace(/aT/g, \"O\")   // aT --> O   (symm change)\n             .replace(/dC/g, \"O\")   // dC --> O   (dual pair)\n             .replace(/dO/g, \"C\")   // dO --> C   (dual pair)\n             .replace(/dI/g, \"D\")   // dI --> D   (dual pair)\n             .replace(/dD/g, \"I\")   // dD --> I   (dual pair)\n             .replace(/aO/g, \"aC\")  // aO --> aC  (for uniqueness)\n             .replace(/aI/g, \"aD\")  // aI --> aD  (for uniqueness)\n             .replace(/gO/g, \"gC\")  // gO --> gC  (for uniqueness)\n             .replace(/gI/g, \"gD\"); // gI --> gD  (for uniqueness)\n  var toks = [];\n  var ptr = 0;\n  while(ptr < expr.length) {\n    var op = expr.charAt(ptr);\n    if(!isToken(op)) {\n      throw new Error(\"Unexpected token: \" + c + \" in input \" + expr + \" at \" + ptr);\n    }\n    var start_n = ++ptr;\n    while(ptr < expr.length && isNumeric(expr.charCodeAt(ptr))) {\n      ++ptr;\n    }\n    var n = parseInt(expr.substr(start_n, ptr));\n    toks.push({\n      op: op,\n      n:  n | 0\n    });\n  }\n  toks.reverse();\n  return toks;\n}\n\n//Main expression interpreter\nfunction evalConwayHart(expr) {\n\n  //Parse expression\n  var toks = tokenize(expr);\n  \n  //Initialize seed\n  var ctor = SEED_FUNCS[toks[0].op];\n  if(!ctor) {\n    throw Error(\"Invalid seed type: \" + JSON.stringify(ops[0]));\n  } else if(\"PAY\".indexOf(toks[0].op) >= 0) {\n    if(toks[0].n < 3) {\n      throw Error(\"Invalid number of faces for seed\");\n    }\n  } else if(toks[0].n !== 0) {\n    throw Error(\"Seed \"  + toks[0].op + \" does not use a parameter\");\n  }\n  var poly = ctor(toks[0].n);\n  \n  //Apply operators\n  for(var i=1; i<toks.length; ++i) {\n    var op = OPERATOR_FUNCS[toks[i].op];\n    if(!op) {\n      throw Error(\"Invalid operator: \" + toks[i]);\n    }\n    poly = op(poly, toks[i].n);\n  }  \n  return { name: poly.name, cells: poly.faces, positions: poly.positions };\n}\nmodule.exports = evalConwayHart;\n\n"]} | |
require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({"bound-points":[function(require,module,exports){ | |
'use strict' | |
module.exports = findBounds | |
function findBounds(points) { | |
var n = points.length | |
if(n === 0) { | |
return [[], []] | |
} | |
var d = points[0].length | |
var lo = points[0].slice() | |
var hi = points[0].slice() | |
for(var i=1; i<n; ++i) { | |
var p = points[i] | |
for(var j=0; j<d; ++j) { | |
var x = p[j] | |
lo[j] = Math.min(lo[j], x) | |
hi[j] = Math.max(hi[j], x) | |
} | |
} | |
return [lo, hi] | |
} | |
},{}]},{},[]) | |
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const polytope = require('conway-hart')('tI') | |
const vec3 = require('gl-vec3') | |
const HEIGHT = 6 | |
const bounds = require('bound-points')(polytope.positions) | |
const radius = Math.max( | |
bounds[1][0] - bounds[0][0], | |
bounds[1][1] - bounds[0][1], | |
bounds[1][2] - bounds[0][2]) | |
const scale = HEIGHT / radius | |
const edges = [] | |
polytope.cells.forEach((c) => { | |
for (let i = 0; i < c.length; ++i) { | |
edges.push([c[i], c[(i + 1) % c.length]]) | |
} | |
}) | |
const lengths = edges.map(([i, j]) => | |
vec3.length(vec3.subtract([], polytope.positions[i], polytope.positions[j]))) | |
lengths.sort(function (a, b) { | |
return a - b | |
}) | |
const histogram = {} | |
let total = 0 | |
lengths.forEach((l) => { | |
const x = Math.round(scale * l * 1000.0) / 1000.0 | |
histogram[x] = (histogram[x] | 0) + 1 | |
total += x | |
}) | |
Object.keys(histogram).forEach(function (l) { | |
histogram[l] /= 2 | |
}) | |
if (typeof document !== 'undefined') { | |
document.body.appendChild(document.createTextNode( | |
`dome height: ${HEIGHT} lengths: ${JSON.stringify(histogram)} total: ${total / 2}`)) | |
} | |
console.log('dome height: ', HEIGHT) | |
console.log('lengths: ', histogram) | |
console.log('total: ', total / 2) | |
;}, 0) |
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{ | |
"name": "requirebin-sketch", | |
"version": "1.0.0", | |
"dependencies": { | |
"gl-vec3": "1.0.3", | |
"conway-hart": "0.1.0", | |
"bound-points": "1.0.0" | |
} | |
} |
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<!-- contents of this file will be placed inside the <body> --> |
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<!-- contents of this file will be placed inside the <head> --> |
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