84 lines
No EOL
2.3 KiB
HTML
Executable file
84 lines
No EOL
2.3 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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</head>
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<body>
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<div id="graph"></div>
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<script>
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// Random tree
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const N = 80;
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const gData = {
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nodes: [...Array(N).keys()].map(i => ({ id: i })),
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links: [...Array(N).keys()]
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.filter(id => id)
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.map(id => ({
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source: id,
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target: Math.round(Math.random() * (id-1))
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}))
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};
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// cross-link node objects
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gData.links.forEach(link => {
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const a = gData.nodes[link.source];
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const b = gData.nodes[link.target];
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!a.neighbors && (a.neighbors = []);
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!b.neighbors && (b.neighbors = []);
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a.neighbors.push(b);
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b.neighbors.push(a);
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!a.links && (a.links = []);
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!b.links && (b.links = []);
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a.links.push(link);
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b.links.push(link);
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});
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const NODE_R = 8;
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const highlightNodes = new Set();
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const highlightLinks = new Set();
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let hoverNode = null;
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const elem = document.getElementById('graph');
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ForceGraph()(elem)
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.graphData(gData)
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.nodeRelSize(NODE_R)
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.onNodeHover(node => {
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highlightNodes.clear();
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highlightLinks.clear();
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if (node) {
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highlightNodes.add(node);
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node.neighbors.forEach(neighbor => highlightNodes.add(neighbor));
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node.links.forEach(link => highlightLinks.add(link));
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}
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hoverNode = node || null;
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})
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.onLinkHover(link => {
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highlightNodes.clear();
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highlightLinks.clear();
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if (link) {
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highlightLinks.add(link);
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highlightNodes.add(link.source);
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highlightNodes.add(link.target);
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}
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})
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.autoPauseRedraw(false) // keep redrawing after engine has stopped
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.linkWidth(link => highlightLinks.has(link) ? 5 : 1)
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.linkDirectionalParticles(4)
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.linkDirectionalParticleWidth(link => highlightLinks.has(link) ? 4 : 0)
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.nodeCanvasObjectMode(node => highlightNodes.has(node) ? 'before' : undefined)
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.nodeCanvasObject((node, ctx) => {
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// add ring just for highlighted nodes
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ctx.beginPath();
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ctx.arc(node.x, node.y, NODE_R * 1.4, 0, 2 * Math.PI, false);
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ctx.fillStyle = node === hoverNode ? 'red' : 'orange';
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ctx.fill();
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});
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</script>
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</body> |