42 lines
No EOL
1.5 KiB
HTML
Executable file
42 lines
No EOL
1.5 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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fetch('../datasets/miserables.json').then(res => res.json()).then(data => {
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const Graph = ForceGraph()
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(document.getElementById('graph'))
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.graphData(data)
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.nodeId('id')
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.nodeAutoColorBy('group')
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.nodeCanvasObject((node, ctx, globalScale) => {
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const label = node.id;
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const fontSize = 12/globalScale;
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ctx.font = `${fontSize}px Sans-Serif`;
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const textWidth = ctx.measureText(label).width;
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const bckgDimensions = [textWidth, fontSize].map(n => n + fontSize * 0.2); // some padding
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ctx.fillStyle = 'rgba(255, 255, 255, 0.8)';
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ctx.fillRect(node.x - bckgDimensions[0] / 2, node.y - bckgDimensions[1] / 2, ...bckgDimensions);
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ctx.textAlign = 'center';
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ctx.textBaseline = 'middle';
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ctx.fillStyle = node.color;
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ctx.fillText(label, node.x, node.y);
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node.__bckgDimensions = bckgDimensions; // to re-use in nodePointerAreaPaint
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})
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.nodePointerAreaPaint((node, color, ctx) => {
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ctx.fillStyle = color;
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const bckgDimensions = node.__bckgDimensions;
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bckgDimensions && ctx.fillRect(node.x - bckgDimensions[0] / 2, node.y - bckgDimensions[1] / 2, ...bckgDimensions);
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});
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});
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</script>
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</body> |