50 lines
No EOL
1.3 KiB
HTML
Executable file
50 lines
No EOL
1.3 KiB
HTML
Executable file
<head>
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<style> body { margin: 0; } </style>
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<script src="//unpkg.com/force-graph"></script>
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<!--<script src="../../dist/force-graph.js"></script>-->
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<script src="//unpkg.com/d3-quadtree"></script>
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<script src="//unpkg.com/d3-force"></script>
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</head>
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<body>
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<div id="graph"></div>
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<script>
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const N = 80;
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const nodes = [...Array(N).keys()].map(() => ({
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// Initial velocity in random direction
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vx: (Math.random() * 2) - 1,
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vy: (Math.random() * 2) - 1
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}));
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const Graph = ForceGraph()
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(document.getElementById('graph'));
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Graph.cooldownTime(Infinity)
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.d3AlphaDecay(0)
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.d3VelocityDecay(0)
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// Deactivate existing forces
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.d3Force('center', null)
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.d3Force('charge', null)
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// Add collision and bounding box forces
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.d3Force('collide', d3.forceCollide(Graph.nodeRelSize()))
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.d3Force('box', () => {
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const SQUARE_HALF_SIDE = Graph.nodeRelSize() * N * 0.5;
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nodes.forEach(node => {
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const x = node.x || 0, y = node.y || 0;
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// bounce on box walls
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if (Math.abs(x) > SQUARE_HALF_SIDE) { node.vx *= -1; }
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if (Math.abs(y) > SQUARE_HALF_SIDE) { node.vy *= -1; }
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});
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})
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// Add nodes
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.graphData({ nodes, links: [] });
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</script>
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</body> |