Links being severed over time inside of a convex hull
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Force directed cell splitting
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .node, .link { | |
| stroke: #bbb; | |
| stroke-width: 1.5px; | |
| stroke-opacity: 0.6; | |
| } | |
| .hull { | |
| opacity: 0.6; | |
| fill: steelblue; | |
| stroke: steelblue; | |
| stroke-width: 32px; | |
| stroke-linejoin: round; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var randNodeX = d3.random.normal(width / 2, 60), | |
| randNodeY = d3.random.normal(height / 2, 60), | |
| randLink = function() { return Math.floor(Math.random() * 30) }, | |
| nodes = d3.range(30).map( | |
| function(val, idx) { | |
| return { name: idx, color: idx % 20, x: randNodeX(), y: randNodeY() }; | |
| }), | |
| links = d3.range(30).map( | |
| function(val, idx) { | |
| var source = randLink(); | |
| var target = randLink(); | |
| return { | |
| source: nodes[source].name, | |
| target: nodes[target].name, | |
| value: 1 }; | |
| }); | |
| var severs = [ | |
| [0, 500], | |
| [10, 1000], | |
| [20, 2000], | |
| [30, 3000], | |
| [40, 4000], | |
| [50, 5000], | |
| [60, 6000], | |
| [70, 7000], | |
| [80, 8000], | |
| [90, 9000] | |
| ]; | |
| var width = 960, | |
| height = 500; | |
| var color = d3.scale.category20(); | |
| var force = d3.layout.force() | |
| .charge(-40) | |
| .gravity(0.1) | |
| .linkDistance(40) | |
| .size([width, height]); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var hull = svg.append("path") | |
| .attr("class", "hull"); | |
| force | |
| .nodes(nodes) | |
| .links(links) | |
| .start(); | |
| var link = svg.selectAll(".link") | |
| .data(links) | |
| .enter().append("line") | |
| .attr("class", "link") | |
| .style("stroke-width", function(d) { return d.value } ); | |
| var node = svg.selectAll(".node") | |
| .data(nodes) | |
| .enter().append("circle") | |
| .attr("class", "node") | |
| .attr("r", 5) | |
| .style("fill", function(d) { return color(d.color); }) | |
| .call(force.drag); | |
| node.append("title") | |
| .text(function(d) { return d.name; }); | |
| force.on("tick", function() { | |
| link.attr("x1", function(d) { return d.source.x; }) | |
| .attr("y1", function(d) { return d.source.y; }) | |
| .attr("x2", function(d) { return d.target.x; }) | |
| .attr("y2", function(d) { return d.target.y; }); | |
| node.attr("cx", function(d) { return d.x; }) | |
| .attr("cy", function(d) { return d.y; }); | |
| hull.datum( | |
| d3.geom.hull( | |
| force.nodes().map(function(d) { return [d.x, d.y]; }) | |
| ) | |
| ).attr("d", function(d) { return "M" + d.join("L") + "Z"; }); | |
| }); | |
| function update() { | |
| force | |
| .nodes(nodes) | |
| .links(links); | |
| node.data(nodes) | |
| .exit().remove(); | |
| link.data(links) | |
| .exit().remove(); | |
| }; | |
| severs.forEach(function(sever) { | |
| var name = sever[0]; | |
| var time = sever[1]; | |
| setTimeout(function() { | |
| links = links.filter(function(d) { | |
| return d.target.name !== name | |
| && d.source.name !== name; | |
| }); | |
| update(); | |
| force.start(); | |
| }, time); | |
| }); | |
| </script> |
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