44 lines
No EOL
1.4 KiB
HTML
Executable file
44 lines
No EOL
1.4 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 = 20;
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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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// gen a number persistent color from around the palette
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const getColor = n => '#' + ((n * 1234567) % Math.pow(2, 24)).toString(16).padStart(6, '0');
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const Graph = ForceGraph()
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(document.getElementById('graph'))
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.nodeCanvasObject((node, ctx) => nodePaint(node, getColor(node.id), ctx))
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.nodePointerAreaPaint(nodePaint)
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.nodeLabel('id')
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.graphData(gData);
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function nodePaint({ id, x, y }, color, ctx) {
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ctx.fillStyle = color;
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[
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() => { ctx.fillRect(x - 6, y - 4, 12, 8); }, // rectangle
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() => { ctx.beginPath(); ctx.moveTo(x, y - 5); ctx.lineTo(x - 5, y + 5); ctx.lineTo(x + 5, y + 5); ctx.fill(); }, // triangle
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() => { ctx.beginPath(); ctx.arc(x, y, 5, 0, 2 * Math.PI, false); ctx.fill(); }, // circle
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() => { ctx.font = '10px Sans-Serif'; ctx.textAlign = 'center'; ctx.textBaseline = 'middle'; ctx.fillText('Text', x, y); } // text
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][id%4]();
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}
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</script>
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</body> |