create-gojs-kit
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A CLI for downloading GoJS samples, extensions, and docs
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Spiral Layout of Node Chains | GoJS Diagramming Library
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<div class="w-full max-w-screen-xl mx-auto">
<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<script src="https://cdn.jsdelivr.net/npm/gojs@3.1.0"></script>
<div id="allSampleContent" class="p-4 w-full">
<script src="../extensions/SpiralLayout.js"></script>
<script id="code">
function init() {
myDiagram = new go.Diagram('myDiagramDiv', {
initialAutoScale: go.AutoScale.Uniform,
isTreePathToChildren: false, // links go from child to parent
layout: new SpiralLayout() // defined in SpiralLayout.js
});
myDiagram.nodeTemplate =
new go.Node('Auto', { locationSpot: go.Spot.Center })
.add(
new go.Shape({ figure: 'Circle', fill: 'white' })
.bind('fill', 'color'),
new go.TextBlock({ margin: 4 })
.bind('text', 'key')
);
myDiagram.linkTemplate =
new go.Link({ curve: go.Curve.Bezier, curviness: 10 })
.add(
new go.Shape(),
new go.Shape({ toArrow: 'Standard' })
);
var model = new go.TreeModel();
model.nodeParentKeyProperty = 'next';
model.nodeDataArray = [
{ key: 'Alpha', next: 'Beta', color: 'coral' },
{ key: 'Beta', next: 'Gamma', color: 'tomato' },
{ key: 'Gamma', next: 'Delta', color: 'goldenrod' },
{ key: 'Delta', next: 'Epsilon', color: 'orange' },
{ key: 'Epsilon', next: 'Zeta', color: 'coral' },
{ key: 'Zeta', next: 'Eta', color: 'tomato' },
{ key: 'Eta', next: 'Theta', color: 'goldenrod' },
{ key: 'Theta', next: 'Iota', color: 'orange' },
{ key: 'Iota', next: 'Kappa', color: 'coral' },
{ key: 'Kappa', next: 'Lambda', color: 'tomato' },
{ key: 'Lambda', next: 'Mu', color: 'goldenrod' },
{ key: 'Mu', next: 'Nu', color: 'orange' },
{ key: 'Nu', next: 'Xi', color: 'coral' },
{ key: 'Xi', next: 'Omicron', color: 'tomato' },
{ key: 'Omicron', next: 'Pi', color: 'goldenrod' },
{ key: 'Pi', next: 'Rho', color: 'orange' },
{ key: 'Rho', next: 'Sigma', color: 'coral' },
{ key: 'Sigma', next: 'Tau', color: 'tomato' },
{ key: 'Tau', next: 'Upsilon', color: 'goldenrod' },
{ key: 'Upsilon', next: 'Phi', color: 'orange' },
{ key: 'Phi', next: 'Chi', color: 'coral' },
{ key: 'Chi', next: 'Psi', color: 'tomato' },
{ key: 'Psi', next: 'Omega', color: 'goldenrod' },
{ key: 'Omega', next: 'Alpha2', color: 'orange' },
{ key: 'Alpha2', next: 'Beta2', color: 'coral' },
{ key: 'Beta2', next: 'Gamma2', color: 'tomato' },
{ key: 'Gamma2', next: 'Delta2', color: 'goldenrod' },
{ key: 'Delta2', next: 'Epsilon2', color: 'orange' },
{ key: 'Epsilon2', next: 'Zeta2', color: 'coral' },
{ key: 'Zeta2', next: 'Eta2', color: 'tomato' },
{ key: 'Eta2', next: 'Theta2', color: 'goldenrod' },
{ key: 'Theta2', next: 'Iota2', color: 'orange' },
{ key: 'Iota2', next: 'Kappa2', color: 'coral' },
{ key: 'Kappa2', next: 'Lambda2', color: 'tomato' },
{ key: 'Lambda2', next: 'Mu2', color: 'goldenrod' },
{ key: 'Mu2', next: 'Nu2', color: 'orange' },
{ key: 'Nu2', next: 'Xi2', color: 'coral' },
{ key: 'Xi2', next: 'Omicron2', color: 'tomato' },
{ key: 'Omicron2', next: 'Pi2', color: 'goldenrod' },
{ key: 'Pi2', next: 'Rho2', color: 'orange' },
{ key: 'Rho2', next: 'Sigma2', color: 'coral' },
{ key: 'Sigma2', next: 'Tau2', color: 'tomato' },
{ key: 'Tau2', next: 'Upsilon2', color: 'goldenrod' },
{ key: 'Upsilon2', next: 'Phi2', color: 'orange' },
{ key: 'Phi2', next: 'Chi2', color: 'coral' },
{ key: 'Chi2', next: 'Psi2', color: 'tomato' },
{ key: 'Psi2', next: 'Omega2', color: 'goldenrod' },
{ key: 'Omega2', color: 'orange' }
];
myDiagram.model = model;
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width: 100%; height: 700px; min-width: 200px"></div>
<p>
This sample demonstrates a custom Layout, SpiralLayout, which assumes the
graph consists of a single chain of nodes. The layout is defined in its own
file, as <a href="../extensions/SpiralLayout.js">SpiralLayout.js</a>.
</p>
<p>
See also <a href="./Serpentine.html">Serpentine Layout</a>.
</p>
</div>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
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<div id="allTagDescriptions" class="p-4 w-full max-w-screen-xl mx-auto">
<hr/>
<h3 class="text-xl">GoJS Features in this sample</h3>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>Custom Layouts</h4>
<p>
GoJS allows for the creation of custom layouts to meet specific needs.
</p>
<p>
There are also many layouts that are extensions -- not predefined in the <code>go.js</code> or <code>go-debug.js</code> library,
but available as source code in one of the three extension directories, with some documentation and corresponding samples.
More information can be found in the <a href="../intro/layouts.html#CustomLayouts">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#customlayout">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>GoJS Extensions</h4>
<p>
<b>GoJS</b> can be extended in a variety of ways.
The most common way to change the standard behavior is to set properties on the <a href="../api/symbols/GraphObject.html" target="api">GraphObject</a>, <a href="../api/symbols/Diagram.html" target="api">Diagram</a>, <a href="../api/symbols/CommandHandler.html" target="api">CommandHandler</a>, <a href="../api/symbols/Tool.html" target="api">Tool</a>, or <a href="../api/symbols/Layout.html" target="api">Layout</a>.
But when the desired property does not exist, you might need to override methods of CommandHandler, Tool, Layout, Link, or Node.
Methods that you can override are documented in the API reference.
Various features of GoJS can be overriden, either by replacing a method on an instance (a feature of JavaScript) or by defining a subclass.
You should not modify the prototypes of any of the <b>GoJS</b> classes.
</p>
<p>
In addition to our samples, <b>GoJS</b> provides an <strong><a href="../samples/#extensions">extensions gallery</a></strong>,
showcasing the creation of custom tools and layouts.
Those classes and samples are written in TypeScript, available at <code>../extensionsJSM/</code>,
as ECMAScript/JavaScript modules -- these use the <code>../release/go-module.js</code> library.
We recommend that you copy the files that you need into your project, so that you can adjust how they refer to the GoJS library
that you choose and so that you can include them into your own building and packaging procedures.
</p>
<p>
More information can be found in the <a href="../intro/extensions.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#extensions">Related samples</a>
</p>
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