force-graph
Version:
2D force-directed graph rendered on HTML5 canvas
42 lines (37 loc) • 1.28 kB
HTML
<head>
<style> body { margin: 0; } </style>
<script src="//cdn.jsdelivr.net/npm/force-graph"></script>
<!--<script src="../../dist/force-graph.js"></script>-->
</head>
<body>
<div id="graph"></div>
<script>
const imgs = ['cat.jpg', 'dog.jpg', 'eagle.jpg', 'elephant.jpg', 'grasshopper.jpg', 'octopus.jpg', 'owl.jpg', 'panda.jpg', 'squirrel.jpg', 'tiger.jpg', 'whale.jpg']
.map(src => {
const img = new Image();
img.src = `./imgs/${src}`;
return img;
});
// Random connected graph
const gData = {
nodes: imgs.map((img, id) => ({ id, img })),
links: [...Array(imgs.length).keys()]
.filter(id => id)
.map(id => ({
source: id,
target: Math.round(Math.random() * (id-1))
}))
};
const Graph = new ForceGraph(document.getElementById('graph'))
.nodeCanvasObject(({ img, x, y }, ctx) => {
const size = 12;
ctx.drawImage(img, x - size / 2, y - size / 2, size, size);
})
.nodePointerAreaPaint((node, color, ctx) => {
const size = 12;
ctx.fillStyle = color;
ctx.fillRect(node.x - size / 2, node.y - size / 2, size, size); // draw square as pointer trap
})
.graphData(gData);
</script>
</body>