fisheye

_.md

[ Launch: fisheye ] 76adad68ceea66ee4be2 by enjalot
[ Launch: fisheye ] acacf2090b88622512f7 by zanarmstrong
[ Launch: test ] 4653053 by enjalot
[ Launch: test ] 4652017 by enjalot
[ Launch: test ] 4582399 by enjalot

config.json

{"description":"fisheye","endpoint":"","display":"svg","public":true,"require":[{"name":"fisheye","url":"https://raw.githubusercontent.com/d3/d3-plugins/master/fisheye/fisheye.js"}],"fileconfigs":{"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12},"_.md":{"default":true,"vim":false,"emacs":false,"fontSize":12},"config.json":{"default":true,"vim":false,"emacs":false,"fontSize":12},"fisheye.js":{"default":true,"vim":false,"emacs":false,"fontSize":12}},"play":false,"loop":false,"restart":false,"autoinit":true,"pause":true,"loop_type":"period","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01,"tab":"edit","display_percent":0.7,"thumbnail":"http://i.imgur.com/Z4ghHZY.png","fullscreen":false,"ajax-caching":true}

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 svg = d3.select("svg")

var list = [];
for (var i = 0; i <= 100; i++) {
    list.push(i * 10);
}


svg.selectAll("circle").data(list).enter()
.append("circle")
.attr({
  cx: function(d){return d},
  cy: 200,
  r: 4
});

var fisheye = d3.fisheye.circular().distortion(20).radius(300)

svg.on("mousemove", function(d){
  fisheye.focus(d3.mouse(this));
  d3.selectAll("circle").attr("cx", function(d){return fisheye({x: d, y: 200}).x})
})