create-gojs-kit
Version:
A CLI for downloading GoJS samples, extensions, and docs
474 lines (427 loc) • 19.2 kB
HTML
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no, viewport-fit=cover"/>
<meta name="description" content="Radial layout of an arbitrary graph given a start node; selecting a node re-lays out using it as a new root node." />
<meta itemprop="description" content="Radial layout of an arbitrary graph given a start node; selecting a node re-lays out using it as a new root node." />
<meta property="og:description" content="Radial layout of an arbitrary graph given a start node; selecting a node re-lays out using it as a new root node." />
<meta name="twitter:description" content="Radial layout of an arbitrary graph given a start node; selecting a node re-lays out using it as a new root node." />
<link rel="preconnect" href="https://rsms.me/">
<link rel="stylesheet" href="../assets/css/style.css">
<!-- Copyright 1998-2025 by Northwoods Software Corporation. -->
<meta itemprop="name" content="Recentering Radial Layout in Concentric Layers" />
<meta property="og:title" content="Recentering Radial Layout in Concentric Layers" />
<meta name="twitter:title" content="Recentering Radial Layout in Concentric Layers" />
<meta property="og:image" content="https://gojs.net/latest/assets/images/screenshots/radial.png" />
<meta itemprop="image" content="https://gojs.net/latest/assets/images/screenshots/radial.png" />
<meta name="twitter:image" content="https://gojs.net/latest/assets/images/screenshots/radial.png" />
<meta property="og:url" content="https://gojs.net/latest/samples/radial.html" />
<meta property="twitter:url" content="https://gojs.net/latest/samples/radial.html" />
<meta name="twitter:card" content="summary_large_image" />
<meta property="og:type" content="website" />
<meta property="twitter:domain" content="gojs.net" />
<title>
Recentering Radial Layout in Concentric Layers | GoJS Diagramming Library
</title>
</head>
<body>
<!-- This top nav is not part of the sample code -->
<nav id="navTop" class=" w-full h-[var(--topnav-h)] z-30 bg-white border-b border-b-gray-200">
<div class="max-w-screen-xl mx-auto flex flex-wrap items-start justify-between px-4">
<a class="text-white bg-nwoods-primary font-bold !leading-[calc(var(--topnav-h)_-_1px)] my-0 px-2 text-4xl lg:text-5xl logo"
href="../">
GoJS
</a>
<div class="relative">
<button id="topnavButton" class="h-[calc(var(--topnav-h)_-_1px)] px-2 m-0 text-gray-900 bg-inherit shadow-none md:hidden hover:!bg-inherit hover:!text-nwoods-accent hover:!shadow-none" aria-label="Navigation">
<svg class="h-7 w-7 block" aria-hidden="true" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24">
<path d="M3.75 6.75h16.5M3.75 12h16.5m-16.5 5.25h16.5" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
</button>
<div id="topnavList" class="hidden md:block">
<div class="absolute right-0 z-30 flex flex-col items-end rounded border border-gray-200 p-4 pl-12 shadow bg-white text-gray-900 font-semibold
md:flex-row md:space-x-4 md:items-start md:border-0 md:p-0 md:shadow-none md:bg-inherit">
<a href="../learn/">Learn</a>
<a href="../samples/">Samples</a>
<a href="../intro/">Intro</a>
<a href="../api/">API</a>
<a href="../download.html">Download</a>
<a href="https://forum.nwoods.com/c/gojs/11" target="_blank" rel="noopener">Forum</a>
<a id="tc" href="https://nwoods.com/contact.html"
target="_blank" rel="noopener" onclick="getOutboundLink('https://nwoods.com/contact.html', 'contact');">Contact</a>
<a id="tb" href="https://nwoods.com/sales/index.html"
target="_blank" rel="noopener" onclick="getOutboundLink('https://nwoods.com/sales/index.html', 'buy');">Buy</a>
</div>
</div>
</div>
</div>
</nav>
<script>
window.addEventListener("DOMContentLoaded", function () {
// topnav
var topButton = document.getElementById("topnavButton");
var topnavList = document.getElementById("topnavList");
if (topButton && topnavList) {
topButton.addEventListener("click", function (e) {
topnavList
.classList
.toggle("hidden");
e.stopPropagation();
});
document.addEventListener("click", function (e) {
// if the clicked element isn't the list, close the list
if (!topnavList.classList.contains("hidden") && !e.target.closest("#topnavList")) {
topButton.click();
}
});
// set active <a> element
var url = window
.location
.href
.toLowerCase();
var aTags = topnavList.getElementsByTagName('a');
for (var i = 0; i < aTags.length; i++) {
var lowerhref = aTags[i]
.href
.toLowerCase();
if (lowerhref.endsWith('.html'))
lowerhref = lowerhref.slice(0, -5);
if (url.startsWith(lowerhref)) {
aTags[i]
.classList
.add('active');
break;
}
}
}
});
</script>
<div class="flex flex-col prose">
<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/RadialLayout.js"></script>
<script id="code">
function init() {
myDiagram = new go.Diagram('myDiagramDiv', {
initialAutoScale: go.AutoScale.Uniform,
padding: 10,
isReadOnly: true,
layout: new RadialLayout({
maxLayers: 2,
rotateNode: function (node, angle, sweep, radius) {
// method override must be function, not =>
// rotate the nodes and make sure the text is not upside-down
node.angle = angle;
var label = node.findObject('TEXTBLOCK');
if (label !== null) {
label.angle = (angle > 90 && angle < 270) || angle < -90 ? 180 : 0;
}
},
commitLayers: function () {
// method override must be function, not =>
// optional: add circles in the background
// need to remove any old ones first
const diagram = this.diagram;
var gridlayer = diagram.findLayer('Grid');
var circles = new go.Set(/*go.Part*/);
gridlayer.parts.each(circle => {
if (circle.name === 'CIRCLE') circles.add(circle);
});
circles.each(circle => diagram.remove(circle));
// add circles centered at the root
for (var lay = 1; lay <= this.maxLayers; lay++) {
var radius = lay * this.layerThickness;
var circle = new go.Part(
{
name: 'CIRCLE',
layerName: 'Grid',
locationSpot: go.Spot.Center,
location: this.root.location
})
.add(
new go.Shape('Circle', { width: radius * 2, height: radius * 2, fill: 'rgba(200,200,200,0.2)', stroke: null })
);
diagram.add(circle);
}
}
}),
'animationManager.isEnabled': false
});
// shows when hovering over a node
var commonToolTip =
go.GraphObject.build('ToolTip')
.add(
new go.Panel('Vertical', { margin: 3 })
.add(
new go.TextBlock( // bound to node data
{ margin: 4, font: 'bold 12pt sans-serif' })
.bind('text'),
new go.TextBlock() // bound to node data
.bind('text', 'color', c => 'Color: ' + c),
new go.TextBlock() // bound to Adornment because of call to Binding.ofObject
.bindObject('text', '', ad => 'Connections: ' + ad.adornedPart.linksConnected.count)
) // end Vertical Panel
); // end Adornment
// define the Node template
myDiagram.nodeTemplate =
new go.Node('Spot', {
locationSpot: go.Spot.Center,
locationObjectName: 'SHAPE', // Node.location is the center of the Shape
selectionAdorned: false,
click: nodeClicked,
toolTip: commonToolTip
})
.add(
new go.Shape('Circle', {
name: 'SHAPE',
fill: 'lightgray', // default value, but also data-bound
stroke: 'transparent',
strokeWidth: 2,
desiredSize: new go.Size(20, 20),
portId: '' // so links will go to the shape, not the whole node
})
.bind('fill', 'color'),
new go.TextBlock({
name: 'TEXTBLOCK',
alignment: go.Spot.Right,
alignmentFocus: go.Spot.Left
})
.bind('text')
);
// this is the root node, at the center of the circular layers
myDiagram.nodeTemplateMap.add('Root',
new go.Node('Auto', {
locationSpot: go.Spot.Center,
selectionAdorned: false,
toolTip: commonToolTip
})
.add(
new go.Shape('Circle', { fill: 'white' }),
new go.TextBlock({ font: 'bold 12pt sans-serif', margin: 5 })
.bind('text')
)
);
// define the Link template
myDiagram.linkTemplate =
new go.Link({
routing: go.Routing.Normal,
curve: go.Curve.Bezier,
selectionAdorned: false,
layerName: 'Background'
})
.add(
new go.Shape({
stroke: 'black', // default value, but is data-bound
strokeWidth: 1
})
.bind('stroke', 'color')
);
generateGraph();
}
function generateGraph() {
var names = [
'Joshua',
'Daniel',
'Robert',
'Noah',
'Anthony',
'Elizabeth',
'Addison',
'Alexis',
'Ella',
'Samantha',
'Joseph',
'Scott',
'James',
'Ryan',
'Benjamin',
'Walter',
'Gabriel',
'Christian',
'Nathan',
'Simon',
'Isabella',
'Emma',
'Olivia',
'Sophia',
'Ava',
'Emily',
'Madison',
'Tina',
'Elena',
'Mia',
'Jacob',
'Ethan',
'Michael',
'Alexander',
'William',
'Natalie',
'Grace',
'Lily',
'Alyssa',
'Ashley',
'Sarah',
'Taylor',
'Hannah',
'Brianna',
'Hailey',
'Christopher',
'Aiden',
'Matthew',
'David',
'Andrew',
'Kaylee',
'Juliana',
'Leah',
'Anna',
'Allison',
'John',
'Samuel',
'Tyler',
'Dylan',
'Jonathan'
];
var nodeDataArray = [];
for (var i = 0; i < names.length; i++) {
nodeDataArray.push({ key: i, text: names[i], color: go.Brush.randomColor(128, 240) });
}
var linkDataArray = [];
var num = nodeDataArray.length;
for (var i = 0; i < num * 2; i++) {
var a = Math.floor(Math.random() * num);
var b = Math.floor((Math.random() * num) / 4) + 1;
linkDataArray.push({ from: a, to: (a + b) % num, color: go.Brush.randomColor(0, 127) });
}
myDiagram.model = new go.GraphLinksModel(nodeDataArray, linkDataArray);
var someone = nodeDataArray[Math.floor(Math.random() * nodeDataArray.length)];
nodeClicked(null, myDiagram.findNodeForData(someone));
}
function nodeClicked(e, root) {
var diagram = root.diagram;
if (diagram === null) return;
// all other nodes should be visible and use the default category
diagram.nodes.each(n => {
n.visible = true;
if (n !== root) n.category = '';
});
// make this Node the root
root.category = 'Root';
// tell the RadialLayout what the root node should be
diagram.layout.root = root;
diagram.layoutDiagram(true);
}
// called when "Set Max Layers" button is clicked
function adjustMaxLayers() {
var newMaxLayers = parseInt(document.getElementById('maxLayersChanger').value);
function isInteger(val) {
return typeof val === 'number' && isFinite(val) && Math.floor(val) === val;
}
if (!isInteger(newMaxLayers) || newMaxLayers < 1 || newMaxLayers > 10) {
alert('Please enter an integer larger than zero and less than or equal to 10.');
} else {
myDiagram.layout.maxLayers = Math.max(1, Math.min(newMaxLayers, 10));
nodeClicked(null, myDiagram.layout.root);
}
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; background: white; width: 100%; height: 600px"></div>
<label for="maxLayersChanger">Max Layers: </label><input type="text" id="maxLayersChanger" name="maxLayers" style="width: 50px" value="2" />
<button onclick="adjustMaxLayers()">Set Max Layers</button>
<p>
Click on a Node to center it and show its relationships. It is also easy to add more information to each node, including pictures, or to put such
information into <a href="../intro/tooltips.html" target="_blank">Tooltips</a>.
</p>
<p>
The <code>RadialLayout</code> class is an extension defined at <a href="../extensions/RadialLayout.js">RadialLayout.js</a>. You can control how many layers
to show, whether to draw the circles, and whether to rotate the text, by modifying RadialLayout properties or changing overrides of
<code>RadialLayout.rotateNode</code> and/or <code>RadialLayout.commitLayers</code>.
</p>
</div>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
</div>
<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>Collections</h4>
<p>
<b>GoJS</b> provides its own collection classes: <a href="../api/symbols/List.html" target="api">List</a>, <a href="../api/symbols/Set.html" target="api">Set</a>, and <a href="../api/symbols/Map.html" target="api">Map</a>.
You can iterate over a collection by using an <a href="../api/symbols/Iterator.html" target="api">Iterator</a>.
More information can be found in the <a href="../intro/collections.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#collections">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>ToolTips</h4>
<p>
A tooltip is an <a href="../api/symbols/Adornment.html" target="api">Adornment</a> that is shown when the mouse hovers over an object that has its <a href="../api/symbols/GraphObject.html#toolTip" target="api">GraphObject.toolTip</a> set.
The tooltip part is bound to the same data as the part itself.
</p>
<p>
It is typical to implement a tooltip as a "ToolTip" Panel holding a <a href="../api/symbols/TextBlock.html" target="api">TextBlock</a> or a Panel of TextBlocks and other objects.
Each "ToolTip" is just an "Auto" Panel <a href="../api/symbols/Adornment.html" target="api">Adornment</a> that is shadowed, and where the border is a rectangular <a href="../api/symbols/Shape.html" target="api">Shape</a> with a light gray fill.
However you can implement the tooltip as any arbitrarily complicated Adornment.
</p>
<p>
More information can be found in the <a href="../intro/tooltips.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#tooltips">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<!-- 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>
<hr>
</div>
</div>
</body>
<!-- This script is part of the gojs.net website, and is not needed to run the sample -->
<script src="../assets/js/goSamples.js"></script>
</html>