var cy = window.cy = cytoscape({
container: document.getElementById('cy'),
style: [{
selector: 'node',
css: {
'content': 'data(id)',
'text-valign': 'center',
'text-halign': 'center'
}
},
{
selector: 'edge',
css: {
'curve-style': 'straight',
}
}
],
layout: {
name: 'preset'
},
elements: {
nodes: [{
data: {
id: 'n0'
}
},
{
data: {
id: 'n1'
}
},
{
data: {
id: 'n2'
}
},
{
data: {
id: 'n3'
}
},
{
data: {
id: 'n4'
}
},
{
data: {
id: 'd0'
},
position: {x: 0, y:0}
},
{
data: {
id: 'd1'
},
position: {x: 400, y:150}
}
],
edges: [{
data: {
id: 'n0n1',
source: 'n0',
target: 'n1'
}
},
{
data: {
id: 'n1n2',
source: 'n1',
target: 'n2'
}
},
{
data: {
id: 'n2n3',
source: 'n2',
target: 'n3'
}
},
{
data: {
id: 'n4n1',
source: 'n4',
target: 'n1'
}
}
]
}
});
var tl = cy.getElementById('d0');
var br = cy.getElementById('d1');
tl.lock();
br.lock();
var realGraphNodes = cy.nodes().difference(tl.union(br));
var constraints = [];
for (var i = 0; i < realGraphNodes.length; i++) {
constraints.push({ axis: 'x', left: tl, right: realGraphNodes[i], gap: 100 });
constraints.push({ axis: 'y', left: tl, right: realGraphNodes[i], gap: 100 });
constraints.push({ axis: 'x', left: realGraphNodes[i], right: br, gap: 100 });
constraints.push({ axis: 'y', left: realGraphNodes[i], right: br, gap: 100 });
}
cy.layout({name: 'cola', randomize: true, animate: false, gapInequalities: constraints}).run();
body {
font: 14px helvetica neue, helvetica, arial, sans-serif;
}
#cy {
height: 95%;
width: 95%;
left: 0;
top: 0;
position: absolute;
}
<html>
<head>
<meta charset=utf-8 />
<meta name="viewport" content="user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, minimal-ui">
<script src="https://unpkg.com/[email protected]/dist/cytoscape.min.js"></script>
<script src="https://unpkg.com/webcola/WebCola/cola.min.js"></script>
<script src="https://unpkg.com/cytoscape-cola/cytoscape-cola.js"></script>
</head>
<body>
<div id="cy"></div>
</body>
</html>