Created by Christopher Manning
Created
December 10, 2012 07:10
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Technology Delaunay Triangulation
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> | |
| <title>Technology Delaunay Triangulation</title> | |
| <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/d3/2.10.0/d3.v2.min.js"></script> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/dat-gui/0.5/dat.gui.min.js"></script> | |
| <link href='http://fonts.googleapis.com/css?family=Libre+Baskerville:400italic' rel='stylesheet' type='text/css'> | |
| <style type="text/css"> | |
| svg { | |
| display: block; | |
| margin: 120px 50px; | |
| background-color: #1a232c; | |
| } | |
| path { | |
| fill: none; | |
| stroke: #CCC; | |
| stroke-width: .5px; | |
| } | |
| svg text { | |
| fill: white; | |
| font-family: 'Libre Baskerville', serif; | |
| font-size: 120px; | |
| font-style: italic; | |
| text-anchor: middle; | |
| dominant-baseline: middle; | |
| stroke: #1a232c; | |
| } | |
| </style> | |
| </head> | |
| <body></body> | |
| <script type="text/javascript"> | |
| var config = {"vertices": 500, "velocity": .1} | |
| var gui = new dat.GUI() | |
| gui.add(config, "vertices", 1, 1000).listen() | |
| gui.add(config, "velocity", 0, 10).listen() | |
| config.random = function(){ | |
| gui.__controllers.forEach(function(c){ | |
| if(c.property!='random'){ | |
| c.setValue(Math.random()*c.__max) | |
| } | |
| }) | |
| } | |
| gui.add(config, "random") | |
| var width = 865, | |
| height = 265, | |
| margin = 100 | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| svg.append("g") | |
| svg.append("text").text("Technology") | |
| .attr('x', width/2) | |
| .attr('y', height/2) | |
| vertices = [] | |
| d3.range(config["vertices"]-vertices.length).forEach(function(d) { | |
| vertices.unshift([ (Math.random() * (width+(margin*2)) - margin), (Math.random() * (height+(margin*2))) - margin ]) | |
| }) | |
| d3.timer(tick) | |
| function tick(t){ | |
| if(vertices.length < config["vertices"]) { | |
| for (var i = 0; i < (config["vertices"]-vertices.length); i++) { | |
| if(Math.random() <= .50){ | |
| vertices.unshift([ -margin, (Math.random() * (height+margin)) - margin ]) | |
| } else { | |
| vertices.unshift([ (Math.random() * (width + margin)) - margin, - margin ]) | |
| } | |
| } | |
| } | |
| vertices = vertices.map(function(d) { | |
| d[0] = d[0] + config["velocity"] | |
| d[1] = d[1] + config["velocity"] | |
| return d | |
| }).filter(function(d){ return d[0] < width + margin && d[1] < height + margin }) | |
| delaunay = d3.geom.delaunay(vertices) | |
| path = d3.select("g") | |
| .selectAll("path") | |
| .data(delaunay) | |
| path | |
| .enter() | |
| .append("path") | |
| path | |
| .attr("d", d3.svg.line()) | |
| path.exit().remove() | |
| } | |
| </script> | |
| </html> |
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