--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/examples/force/force-multi-foci.html Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <title>Force-Directed Layout (Multiple Foci)</title>
+ <script type="text/javascript" src="../../d3.js"></script>
+ <script type="text/javascript" src="../../d3.geom.js"></script>
+ <script type="text/javascript" src="../../d3.layout.js"></script>
+ </head>
+ <body>
+ <div id="chart"></div>
+ <script type="text/javascript">
+
+var w = 960,
+ h = 500,
+ fill = d3.scale.category10(),
+ nodes = d3.range(100).map(Object);
+
+var vis = d3.select("#chart").append("svg:svg")
+ .attr("width", w)
+ .attr("height", h);
+
+var force = d3.layout.force()
+ .nodes(nodes)
+ .links([])
+ .size([w, h])
+ .start();
+
+var node = vis.selectAll("circle.node")
+ .data(nodes)
+ .enter().append("svg:circle")
+ .attr("class", "node")
+ .attr("cx", function(d) { return d.x; })
+ .attr("cy", function(d) { return d.y; })
+ .attr("r", 8)
+ .style("fill", function(d, i) { return fill(i & 3); })
+ .style("stroke", function(d, i) { return d3.rgb(fill(i & 3)).darker(2); })
+ .style("stroke-width", 1.5)
+ .call(force.drag);
+
+vis.style("opacity", 1e-6)
+ .transition()
+ .duration(1000)
+ .style("opacity", 1);
+
+force.on("tick", function(e) {
+
+ // Push different nodes in different directions for clustering.
+ var k = 6 * e.alpha;
+ nodes.forEach(function(o, i) {
+ o.x += i & 2 ? k : -k;
+ o.y += i & 1 ? k : -k;
+ });
+
+ node.attr("cx", function(d) { return d.x; })
+ .attr("cy", function(d) { return d.y; });
+});
+
+d3.select("body").on("click", function() {
+ nodes.forEach(function(o, i) {
+ o.x += (Math.random() - .5) * 40;
+ o.y += (Math.random() - .5) * 40;
+ });
+ force.resume();
+});
+
+ </script>
+ </body>
+</html>