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collisionForce (forceCollide)
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| <html> | |
| <head> | |
| <title>collisionForce</title> | |
| <script type="text/javascript" src = "https://d3js.org/d3.v4.min.js"></script> | |
| <style type = "text/css"> | |
| .active { | |
| stroke: #000; | |
| stroke-width: 2px; | |
| } | |
| .links line { | |
| stroke: #aaa; | |
| } | |
| .nodes circle { | |
| pointer-events: all; | |
| stroke: none; | |
| stroke-width: 40px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| var width = 1000, | |
| height = 600; | |
| var svg = d3.select("body").append("svg").attr("width",width) | |
| .attr("height",height); | |
| var nodeData = [{'x':100,'y':100,'r':10}, | |
| {'x':200,'y':100,'r':10}, | |
| {'x':50,'y':200,'r':10}, | |
| {'x':350,'y':200,'r':10}, | |
| {'x':100,'y':300,'r':10}, | |
| {'x':300,'y':300,'r':10}, | |
| {'x':300,'y':250,'r':10},]; | |
| var attractForce = d3.forceManyBody().strength(80).distanceMax(400).distanceMin(80); | |
| var collisionForce = d3.forceCollide(52).strength(1).iterations(100); | |
| var simulation = d3.forceSimulation(nodeData).alphaDecay(0.01).force("attractForce",attractForce).force("collisionForce",collisionForce); | |
| var node = svg.selectAll("circle").data(nodeData) | |
| .enter().append("circle") | |
| .attr("r",function(d){ return d.r;}).attr("cx",function(d){ return d.x;}).attr("cy",function(d){ return d.y;}) | |
| .attr("fill","black").attr("opacity",0.5) | |
| .call(d3.drag() | |
| .on("start",dragstarted) | |
| .on("drag",dragged) | |
| .on("end",dragended)); | |
| function dragstarted(d) | |
| { | |
| simulation.restart(); | |
| simulation.alpha(0.7); | |
| d.fx = d.x; | |
| d.fy = d.y; | |
| } | |
| function dragged(d) | |
| { | |
| d.fx = d3.event.x; | |
| d.fy = d3.event.y; | |
| } | |
| function dragended(d) | |
| { | |
| d.fx = null; | |
| d.fy = null; | |
| simulation.alphaTarget(0.1); | |
| } | |
| function ticked(){ | |
| node.attr("cx", function(d){ return d.x;}) | |
| .attr("cy", function(d){ return d.y;}) | |
| } | |
| simulation.on("tick",ticked); | |
| </script> | |
| </body> | |
| </html> |
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