gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
167 lines (156 loc) • 9.05 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="An instrument gauge implemented in GoJS using a Graduated Panel."/>
<link rel="stylesheet" href="../assets/css/style.css"/>
<!-- Copyright 1998-2023 by Northwoods Software Corporation. -->
<title>An Instrument Gauge</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>
<path id="topnavClosed" class="hidden" fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd"></path>
</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">
<li class="p-1 sm:p-0"><a class="topnav-link" href="../learn/">Learn</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../samples/">Samples</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../intro/">Intro</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../api/">API</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/products/register.html">Register</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../download.html">Download</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://forum.nwoods.com/c/gojs/11">Forum</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/contact.html"
target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/contact.html', 'contact');">Contact</a></li>
<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 -->
<script src="../release/go.js"></script>
<div id="allSampleContent" class="p-4 w-full">
<script id="code">
function init() {
// Since 2.2 you can also author concise templates with method chaining instead of GraphObject.make
// For details, see https://gojs.net/latest/intro/buildingObjects.html
const $ = go.GraphObject.make;
myDiagram = new go.Diagram("myDiagramDiv");
myDiagram.nodeTemplate =
$(go.Node, "Auto",
$(go.Shape, "Circle",
{ stroke: "orange", strokeWidth: 5, spot1: go.Spot.TopLeft, spot2: go.Spot.BottomRight },
new go.Binding("stroke", "color")),
$(go.Panel, "Spot",
$(go.Panel, "Graduated",
{
name: "SCALE", margin: 14,
graduatedTickUnit: 2.5, // tick marks at each multiple of 2.5
graduatedMax: 100, // this is actually the default value
stretch: go.GraphObject.None // needed to avoid unnecessary re-measuring!!!
},
new go.Binding("graduatedMax", "max"), // controls the range of the gauge
// the main path of the graduated panel, an arc starting at 135 degrees and sweeping for 270 degrees
$(go.Shape, { name: "SHAPE", geometryString: "M-70.7107 70.7107 B135 270 0 0 100 100 M0 100", stroke: "white", strokeWidth: 4 }),
// three differently sized tick marks
$(go.Shape, { geometryString: "M0 0 V10", stroke: "white", strokeWidth: 1.5 }),
$(go.Shape, { geometryString: "M0 0 V12", stroke: "white", strokeWidth: 2.5, interval: 2 }),
$(go.Shape, { geometryString: "M0 0 V15", stroke: "white", strokeWidth: 3.5, interval: 4 }),
$(go.TextBlock,
{ // each tick label
interval: 4,
alignmentFocus: go.Spot.Center,
font: "bold italic 14pt sans-serif", stroke: "white",
segmentOffset: new go.Point(0, 30)
})
),
$(go.TextBlock,
{ alignment: new go.Spot(0.5, 0.9), stroke: "orange", font: "bold italic 14pt sans-serif" },
new go.Binding("text", "key"),
new go.Binding("stroke", "color")),
$(go.Shape, { fill: "red", strokeWidth: 0, geometryString: "F1 M-6 0 L0 -6 100 0 0 6z x M-100 0" },
new go.Binding("angle", "value", convertValueToAngle)),
$(go.Shape, "Circle", { width: 2, height: 2, fill: "#444" })
)
);
// this determines the angle of the needle, based on the data.value argument
function convertValueToAngle(v, shape) {
var scale = shape.part.findObject("SCALE");
var p = scale.graduatedPointForValue(v);
var shape = shape.part.findObject("SHAPE");
var c = shape.actualBounds.center;
return c.directionPoint(p);
}
myDiagram.model = new go.GraphLinksModel([
{ key: "Alpha", value: 35 },
{ key: "Beta", color: "green", max: 140, value: 70 }
], [
{ from: "Alpha", to: "Beta" }
]);
loop();
}
// change each gauge's value several times a second
function loop() {
setTimeout(() => {
myDiagram.startTransaction();
myDiagram.nodes.each(node => {
var scale = node.findObject("SCALE");
if (scale === null || scale.type !== go.Panel.Graduated) return;
// keep the new value within the range of the graduated panel
var min = scale.graduatedMin;
var max = scale.graduatedMax;
var v = node.data.value;
if (v === undefined) v = Math.floor((max - min) / 2); // default to middle value
if (v < min) v++;
else if (v > max) v--;
else v += (Math.random() < 0.5) ? -0.5 : 0.5; // random walk
myDiagram.model.setDataProperty(node.data, "value", v);
});
myDiagram.commitTransaction("modified Graduated Panel");
loop();
}, 1000 / 6);
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:350px"></div>
<p>
This makes use of a <a href="../intro/graduatedPanels.html">"Graduated"</a> <a>Panel</a>,
which holds the main path of the scale, a Shape whose <a>Shape.geometry</a> is a circular arc.
In addition that Graduated Panel holds three different Shapes acting as templates for tick marks and
a TextBlock acting as a template for tick labels.
</p>
<p>
In a Spot Panel with the Graduated Panel scale are an italic TextBlock showing the node identifier and a red elongated diamond "needle" Shape.
The needle's angle is determined by <code>convertValueToAngle</code>, which finds the point on the Graduated Panel's
main path element corresponding to <code>data.value</code> and computes the angle from the center to that point.
The data value is updated several times per second.
A circle Shape surrounds the Spot Panel.
</p>
</div>
</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>