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flow like the river

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root 2025-11-07 00:06:12 +01:00
commit 013fe673f3
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VISUALIZACION/node_modules/force-graph/example/text-nodes/index.html generated vendored Executable file
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<head>
<style> body { margin: 0; } </style>
<script src="//unpkg.com/force-graph"></script>
<!--<script src="../../dist/force-graph.js"></script>-->
</head>
<body>
<div id="graph"></div>
<script>
fetch('../datasets/miserables.json').then(res => res.json()).then(data => {
const Graph = ForceGraph()
(document.getElementById('graph'))
.graphData(data)
.nodeId('id')
.nodeAutoColorBy('group')
.nodeCanvasObject((node, ctx, globalScale) => {
const label = node.id;
const fontSize = 12/globalScale;
ctx.font = `${fontSize}px Sans-Serif`;
const textWidth = ctx.measureText(label).width;
const bckgDimensions = [textWidth, fontSize].map(n => n + fontSize * 0.2); // some padding
ctx.fillStyle = 'rgba(255, 255, 255, 0.8)';
ctx.fillRect(node.x - bckgDimensions[0] / 2, node.y - bckgDimensions[1] / 2, ...bckgDimensions);
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillStyle = node.color;
ctx.fillText(label, node.x, node.y);
node.__bckgDimensions = bckgDimensions; // to re-use in nodePointerAreaPaint
})
.nodePointerAreaPaint((node, color, ctx) => {
ctx.fillStyle = color;
const bckgDimensions = node.__bckgDimensions;
bckgDimensions && ctx.fillRect(node.x - bckgDimensions[0] / 2, node.y - bckgDimensions[1] / 2, ...bckgDimensions);
});
});
</script>
</body>