fisheye

_.md

[ Launch: fisheye ] 6473448 by enjalot

config.json

{"description":"fisheye","endpoint":"","display":"svg","public":true,"require":[{"name":"fisheye","url":"https://raw.github.com/d3/d3-plugins/master/fisheye/fisheye.js"}],"tab":"edit","display_percent":0.6066666666666666,"play":true,"loop":true,"restart":false,"autoinit":true,"pause":true,"loop_type":"period","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01,"fileconfigs":{"config.json":{"default":true,"vim":false,"emacs":false,"fontSize":12},"eye.svg":{"default":true,"vim":false,"emacs":false,"fontSize":12},"fish.svg":{"default":true,"vim":false,"emacs":false,"fontSize":12},"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12},"_.md":{"default":true,"vim":false,"emacs":false,"fontSize":12},"fisheye.js":{"default":true,"vim":false,"emacs":false,"fontSize":12}},"fullscreen":false,"thumbnail":"http://i.imgur.com/9nlPXUd.gif","ajax-caching":true}

eye.svg

fish.svg

fisheye.js

// https://raw.githubusercontent.com/d3/d3-plugins/master/fisheye/fisheye.js
(function() {
  d3.fisheye = {
    scale: function(scaleType) {
      return d3_fisheye_scale(scaleType(), 3, 0);
    },
    circular: function() {
      var radius = 200,
          distortion = 2,
          k0,
          k1,
          focus = [0, 0];

      function fisheye(d) {
        var dx = d.x - focus[0],
            dy = d.y - focus[1],
            dd = Math.sqrt(dx * dx + dy * dy);
        if (!dd || dd >= radius) return {x: d.x, y: d.y, z: dd >= radius ? 1 : 10};
        var k = k0 * (1 - Math.exp(-dd * k1)) / dd * .75 + .25;
        return {x: focus[0] + dx * k, y: focus[1] + dy * k, z: Math.min(k, 10)};
      }

      function rescale() {
        k0 = Math.exp(distortion);
        k0 = k0 / (k0 - 1) * radius;
        k1 = distortion / radius;
        return fisheye;
      }

      fisheye.radius = function(_) {
        if (!arguments.length) return radius;
        radius = +_;
        return rescale();
      };

      fisheye.distortion = function(_) {
        if (!arguments.length) return distortion;
        distortion = +_;
        return rescale();
      };

      fisheye.focus = function(_) {
        if (!arguments.length) return focus;
        focus = _;
        return fisheye;
      };

      return rescale();
    }
  };

  function d3_fisheye_scale(scale, d, a) {

    function fisheye(_) {
      var x = scale(_),
          left = x < a,
          range = d3.extent(scale.range()),
          min = range[0],
          max = range[1],
          m = left ? a - min : max - a;
      if (m == 0) m = max - min;
      return (left ? -1 : 1) * m * (d + 1) / (d + (m / Math.abs(x - a))) + a;
    }

    fisheye.distortion = function(_) {
      if (!arguments.length) return d;
      d = +_;
      return fisheye;
    };

    fisheye.focus = function(_) {
      if (!arguments.length) return a;
      a = +_;
      return fisheye;
    };

    fisheye.copy = function() {
      return d3_fisheye_scale(scale.copy(), d, a);
    };

    fisheye.nice = scale.nice;
    fisheye.ticks = scale.ticks;
    fisheye.tickFormat = scale.tickFormat;
    return d3.rebind(fisheye, scale, "domain", "range");
  }
})();

inlet.js

var fishD = d3.select("#fish").attr("d");
d3.select("#fish").style("display", "none");

var eye = d3.select("#eye").style("display", "none");

var fisheye = d3.fisheye.circular()
    .radius(tributary.anim(573, 300))
    .distortion(tributary.anim(2, 5.94985));

tributary.loop_type = "pingpong";
tributary.duration = 2000;

var data = _.map(d3.range(100), function(d) {
  return {
    i: d,
    x: d % 10 * tributary.anim(84, 60),
    y: parseInt(d/10) * 77
  }
});

var svg = d3.select("svg");
var fishies = svg.selectAll("g.fish")
    .data(data)
    .enter()
    .append("g")
    .classed("fish", true);

fishies.attr("transform", function(d) {
  return "translate(" + [d.x, d.y] + ")";
})


fishies.append("path")
  .attr("d", fishD)
  .style({
    fill: "#8709AF",
    "fill-opacity": 0.4,
    stroke: "#125EBE",
    "stroke-opacity": 0.8,
    "stroke-width": 3
  });




fisheye.focus([tributary.sw/2-50, tributary.sh/2 - 50]);

fishies.attr("transform", function(d) {
  var fe = fisheye(d);
  return "translate(" + [fe.x, fe.y] + ")"
    + "scale(" + fe.z + ")";
})
  
  svg.on("mousemove", function() {
    var mouse = d3.mouse(this);
    eye.attr("transform", "translate(" + [mouse[0] - 50, mouse[1] - 30] + ")")
    
    fisheye.focus(mouse);
    
      fishies.attr("transform", function(d) {
        var fe = fisheye(d); //{x: ..., y: ...
        return "translate(" + [fe.x, fe.y] + ")"
          + "scale(" + fe.z + ")";
      })
  })