gojs
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Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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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="Allow the user to shift the rotation point as well as rotate objects by using the SpotRotatingTool extension."/>
<link rel="stylesheet" href="../assets/css/style.css"/>
<!-- Copyright 1998-2023 by Northwoods Software Corporation. -->
<title>Spot Rotating</title>
</head>
<body>
<!-- This top nav is not part of the sample code -->
<nav id="navTop" class="w-full z-30 top-0 text-white bg-nwoods-primary">
<div class="w-full container max-w-screen-lg mx-auto flex flex-wrap sm:flex-nowrap items-center justify-between mt-0 py-2">
<div class="md:pl-4">
<a class="text-white hover:text-white no-underline hover:no-underline
font-bold text-2xl lg:text-4xl rounded-lg hover:bg-nwoods-secondary " href="../">
<h1 class="my-0 p-1 ">GoJS</h1>
</a>
</div>
<button id="topnavButton" class="rounded-lg sm:hidden focus:outline-none focus:ring" aria-label="Navigation">
<svg fill="currentColor" viewBox="0 0 20 20" class="w-6 h-6">
<path id="topnavOpen" fill-rule="evenodd" d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM9 15a1 1 0 011-1h6a1 1 0 110 2h-6a1 1 0 01-1-1z" clip-rule="evenodd"></path>
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</svg>
</button>
<div id="topnavList" class="hidden sm:block items-center w-auto mt-0 text-white p-0 z-20">
<ul class="list-reset list-none font-semibold flex justify-end flex-wrap sm:flex-nowrap items-center px-0 pb-0">
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<li class="p-1 sm:p-0"><a class="topnav-link" href="../samples/">Samples</a></li>
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<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/sales/index.html"
target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/sales/index.html', 'buy');">Buy</a></li>
</ul>
</div>
</div>
<hr class="border-b border-gray-600 opacity-50 my-0 py-0" />
</nav>
<div class="md:flex flex-col md:flex-row md:min-h-screen w-full max-w-screen-xl mx-auto">
<div id="navSide" class="flex flex-col w-full md:w-48 text-gray-700 bg-white flex-shrink-0"></div>
<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<div id="allSampleContent" class="p-4 w-full">
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:600px; background-color: gray"></div>
<p>
The user can resize and rotate the Shape named "SHAPE" in the Nodes.
In addition to the normal features of the RotatingTool, the SpotRotatingTool
shows a handle at the <a>Part.rotationSpot</a>, which is also at the <a>RotatingTool.rotationPoint</a>.
The user can drag that handle and thereby move the rotationPoint and the <a>Part.rotationSpot</a>.
When the handle is inside the rectangular area of the <a>Part.rotateObject</a>,
the Spot is purely fractional.
When the handle moves outside of the object's rectangular area, the spot
will be at the edge of the rectangle plus an offset.
</p>
<p>
This extension tool is defined in its own file, as <a href="SpotRotatingTool.js" target="_blank">SpotRotatingTool.js</a>.
</p>
<textarea id="mySavedModel" style="width:100%;height:200px"></textarea>
</div>
<script type="module" id="code">
import * as go from "../release/go-module.js";
import { SpotRotatingTool } from './SpotRotatingTool.js';
if (window.goSamples) goSamples(); // init for the samples -- you don't need to call this
const $ = go.GraphObject.make; // for conciseness in defining templates
const myDiagram =
new go.Diagram("myDiagramDiv",
{
rotatingTool: new SpotRotatingTool(),
"undoManager.isEnabled": true,
"ModelChanged": e => {
if (e.isTransactionFinished) {
document.getElementById("mySavedModel").value = myDiagram.model.toJson();
}
}
});
myDiagram.nodeTemplate =
$(go.Node, go.Panel.Spot,
{
locationObjectName: "SHAPE",
locationSpot: go.Spot.Center,
selectionObjectName: "SHAPE",
resizable: true,
resizeObjectName: "SHAPE", // name of the graph object to be resized
rotatable: true,
rotateObjectName: "SHAPE", // name of the graph object to be rotate
rotationSpot: go.Spot.Center
},
new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
new go.Binding("rotationSpot", "rotSpot", go.Spot.parse).makeTwoWay(go.Spot.stringify),
$(go.Shape, "RoundedRectangle",
{ name: "SHAPE", fill: "orange", strokeWidth: 2 },
new go.Binding("desiredSize", "size", go.Size.parse).makeTwoWay(go.Size.stringify),
new go.Binding("angle").makeTwoWay()),
$(go.TextBlock, new go.Binding("text"))
);
myDiagram.model = new go.GraphLinksModel(
[
{ key: 1, text: "Alpha", color: "lightblue" },
{ key: 2, text: "Beta", color: "orange" },
{ key: 3, text: "Gamma", color: "lightgreen" },
{ key: 4, text: "Delta", color: "pink" }
],
[
{ from: 1, to: 2 },
{ from: 1, to: 3 },
{ from: 3, to: 4 }
]);
window.myDiagram = myDiagram; // Attach to the window for console debugging
</script>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
</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>