diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/examples/voronoi/voronoi.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/examples/voronoi/voronoi.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,34 @@
+var w = 960,
+    h = 500;
+
+var vertices = d3.range(100).map(function(d) {
+  return [Math.random() * w, Math.random() * h];
+});
+
+var svg = d3.select("#chart")
+  .append("svg:svg")
+    .attr("width", w)
+    .attr("height", h)
+    .attr("class", "PiYG")
+    .on("mousemove", update);
+
+svg.selectAll("path")
+    .data(d3.geom.voronoi(vertices))
+  .enter().append("svg:path")
+    .attr("class", function(d, i) { return i ? "q" + (i % 9) + "-9" : null; })
+    .attr("d", function(d) { return "M" + d.join("L") + "Z"; });
+
+svg.selectAll("circle")
+    .data(vertices.slice(1))
+  .enter().append("svg:circle")
+    .attr("transform", function(d) { return "translate(" + d + ")"; })
+    .attr("r", 2);
+
+function update() {
+  vertices[0] = d3.svg.mouse(this);
+  svg.selectAll("path")
+      .data(d3.geom.voronoi(vertices)
+      .map(function(d) { return "M" + d.join("L") + "Z"; }))
+      .filter(function(d) { return this.getAttribute("d") != d; })
+      .attr("d", function(d) { return d; });
+}