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83 lines
2.0 KiB
83 lines
2.0 KiB
<!doctype html>
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<html>
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<head>
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<title>Network | Basic usage</title>
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<script type="text/javascript" src="../../../dist/vis.js"></script>
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<link href="../../../dist/vis-network.min.css" rel="stylesheet" type="text/css"/>
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<style type="text/css">
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#mynetwork {
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width: 600px;
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height: 400px;
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border: 1px solid lightgray;
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}
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p {
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max-width:600px;
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}
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</style>
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</head>
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<body>
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<p>
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You can draw on the canvas using normal HTML5 canvas functions. The before drawing will be behind the network, the after drawing will be in front of the network.
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</p>
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<div id="mynetwork"></div>
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<pre id="eventSpan"></pre>
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<script type="text/javascript">
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// create an array with nodes
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var nodes = new vis.DataSet([
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{id: 1, label: 'Node 1'},
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{id: 2, label: 'Node 2'},
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{id: 3, label: 'Node 3'},
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{id: 4, label: 'Node 4'},
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{id: 5, label: 'Node 5'}
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]);
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// create an array with edges
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var edges = new vis.DataSet([
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{from: 1, to: 3},
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{from: 1, to: 2},
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{from: 2, to: 4},
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{from: 2, to: 5}
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]);
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// create a network
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var container = document.getElementById('mynetwork');
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var data = {
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nodes: nodes,
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edges: edges
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};
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var options = {};
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var network = new vis.Network(container, data, options);
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network.on("initRedraw", function () {
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// do something like move some custom elements?
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});
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network.on("beforeDrawing", function (ctx) {
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var nodeId = 1;
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var nodePosition = network.getPositions([nodeId]);
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ctx.strokeStyle = '#A6D5F7';
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ctx.fillStyle = '#294475';
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ctx.circle(nodePosition[nodeId].x, nodePosition[nodeId].y,50);
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ctx.fill();
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ctx.stroke();
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});
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network.on("afterDrawing", function (ctx) {
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var nodeId = 1;
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var nodePosition = network.getPositions([nodeId]);
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ctx.strokeStyle = '#294475';
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ctx.lineWidth = 4;
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ctx.fillStyle = '#A6D5F7';
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ctx.circle(nodePosition[nodeId].x, nodePosition[nodeId].y,20);
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ctx.fill();
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ctx.stroke();
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});
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</script>
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</body>
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</html>
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