Uniform Random III by mbostock

index.html

<!DOCTYPE html>
<meta charset="utf-8">
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="cubehelix.min.js"></script>
<script>

var width = 960,
    height = 500;

var sample = uniformRandomSampler(width, height, 10000),
    samples = [],
    s;

while (s = sample()) samples.push(s);

var voronoi = d3.geom.voronoi()
    .clipExtent([[0, 0], [width, height]]); // TODO overdraw

var color = d3.scale.cubehelix()
    .domain([0, 200])
    .range([d3.hsl(96, .6, 1), d3.hsl(276, .6, 0)])
    .clamp(true);

d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
  .selectAll("path")
    .data(voronoi(samples))
  .enter().append("path")
    .style("fill", function(d) { return color(d3.geom.polygon(d).area()); })
    .attr("d", function(d) { return "M" + d.join("L") + "Z"; });

function uniformRandomSampler(width, height, numSamplesMax) {
  var numSamples = 0;
  return function() {
    if (++numSamples > numSamplesMax) return;
    return [Math.random() * width, Math.random() * height];
  };
}

</script>

cubehelix.min.js

!function(){function t(t){return function(e,i){e=d3.hsl(e),i=d3.hsl(i);var r=(e.h+120)*a,h=(i.h+120)*a-r,s=e.s,l=i.s-s,o=e.l,u=i.l-o;return isNaN(l)&&(l=0,s=isNaN(s)?i.s:s),isNaN(h)&&(h=0,r=isNaN(r)?i.h:r),function(a){var e=r+h*a,i=Math.pow(o+u*a,t),c=(s+l*a)*i*(1-i);return"#"+n(i+c*(-.14861*Math.cos(e)+1.78277*Math.sin(e)))+n(i+c*(-.29227*Math.cos(e)-.90649*Math.sin(e)))+n(i+c*1.97294*Math.cos(e))}}}function n(t){var n=(t=0>=t?0:t>=1?255:0|255*t).toString(16);return 16>t?"0"+n:n}var a=Math.PI/180;d3.scale.cubehelix=function(){return d3.scale.linear().range([d3.hsl(300,.5,0),d3.hsl(-240,.5,1)]).interpolate(d3.interpolateCubehelix)},d3.interpolateCubehelix=t(1),d3.interpolateCubehelix.gamma=t}();