create-gojs-kit
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A CLI for downloading GoJS samples, extensions, and docs
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Industrial Process Diagram | GoJS Diagramming Library
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GoJS
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<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/Figures.js"></script> <!--Needs to be included to add the arrows-->
<link href="https://fonts.googleapis.com/css?family=Lato:400,700" rel="stylesheet" type="text/css" />
<script id="code">
// A custom Link class that routes directly to the closest vertical point of a "Tower" node.
// If the regular node is too far above or belown the "Tower" node, the link connects with
// the closest end of the "Tower" node.
// See "BarLink" in the Network Configuration sample for a similar class for connecting to horizontal Nodes.
class TowerLink extends go.Link {
constructor(init) {
super();
if (init) Object.assign(this, init);
}
getLinkPoint(node, port, spot, from, ortho, othernode, otherport) {
if (!from && node.category === 'Tower' && spot !== Spot.Bottom && spot !== Spot.Top) {
var op = super.getLinkPoint(othernode, otherport, this.computeSpot(!from), !from, ortho, node, port);
var r = port.getDocumentBounds();
var x = op.x > r.centerX ? r.right : r.left;
if (op.y < r.top + 15) return new go.Point(x, r.top + 15);
if (op.y > r.bottom - 15) return new go.Point(x, r.bottom - 15);
return new go.Point(x, op.y);
} else {
return super.getLinkPoint(node, port, spot, from, ortho, othernode, otherport);
}
}
getLinkDirection(node, port, linkpoint, spot, from, ortho, othernode, otherport) {
if (node.category === 'Tower' && spot !== Spot.Bottom && spot !== Spot.Top) {
const p = port.getDocumentPoint(go.Spot.Center);
const op = otherport.getDocumentPoint(go.Spot.Center);
const below = op.x > p.x;
return below ? 0 : 180;
} else {
return super.getLinkDirection(node, port, linkpoint, spot, from, ortho, othernode, otherport);
}
}
}
// end BarLink class
function gradientBrush(color) {
const brush = new go.Brush(go.Brush.Linear);
brush.addColorStop(0, color);
brush.addColorStop(0.5, Brush.lightenBy(color));
brush.addColorStop(1, color);
brush.start = go.Spot.Left;
brush.end = go.Spot.Right;
return brush;
}
function init() {
myDiagram = new go.Diagram('myDiagramDiv', {
initialAutoScale: go.AutoScale.Uniform, // scale to show all of the contents
maxSelectionCount: 1, // don't allow users to select more than one thing at a time
isReadOnly: true
});
myDiagram.nodeTemplate =
new go.Node('Auto')
.bind('location', 'location', go.Point.parse)
.add(
new go.TextBlock({ margin: 3, font: 'bold 15px sans-serif' })
.bind('text')
);
myDiagram.nodeTemplateMap.add('Tower',
new go.Node('Position', {})
.bind('location', 'location', go.Point.parse)
.add(
new go.Shape('Rectangle', {
width: 30,
strokeWidth: 1,
stroke: 'black'
})
.bind('fill', 'color', gradientBrush)
.bind('height'),
new go.Shape({
geometryString: 'F M0 0 L30 0 A15 15 15 0 0 0 0',
strokeWidth: 1,
stroke: 'black'
})
.bind('fill', 'color', gradientBrush),
new go.Shape({
geometryString: 'F M0 0 L30 0 A15 15 15 0 1 0 0',
strokeWidth: 1,
stroke: 'black'
})
.bind('fill', 'color', gradientBrush)
.bind('position', 'height', height => new go.Point(0, height))
));
myDiagram.nodeTemplateMap.add('Output',
new go.Node('Table')
.bind('location', 'location', go.Point.parse)
.add(
new go.Shape('Arrow', {
width: 30,
height: 30,
strokeWidth: 1,
stroke: 'black',
row: 0
})
.bind('fill', 'color', gradientBrush)
.bind('column', 'textside', side => side === 'right' ? 0 : 1),
new go.TextBlock({ margin: 3, font: 'bold 15px sans-serif' })
.bind('text')
.bind('column', 'textside', side => side === 'right' ? 1 : 0)
));
myDiagram.nodeTemplateMap.add('Heater',
new go.Node('Position')
.bind('location', 'location', go.Point.parse)
.add(
new go.Shape({
geometryString: 'F M10 0 L20 0 20 10 30 20 30 40 0 40 0 20 10 10 10 0',
strokeWidth: 1,
width: 30,
height: 40,
stroke: 'black'
})
.bind('fill', 'color', gradientBrush),
new go.Shape({
geometryString: 'M-15 0 L-10 0 -5 -8 0 8 5 0 10 0',
strokeWidth: 2,
stroke: 'black',
position: new go.Point(2, 18)
})
));
myDiagram.linkTemplate =
new TowerLink({
routing: go.Routing.Orthogonal,
toShortLength: 2
})
.bind('fromSpot', 'fromSpot', go.Spot.parse)
.bind('toSpot', 'toSpot', go.Spot.parse)
.add(
new go.Shape({ strokeWidth: 2 }),
new go.Shape({ toArrow: 'Triangle' }),
new go.TextBlock({
alignmentFocus: go.Spot.Right,
segmentOffset: new go.Point(0, 10)
})
.bind('text')
);
myDiagram.model = go.Model.fromJson(document.getElementById('mySavedModel').textContent);
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div style="width: 100%">
<div
id="myDiagramDiv"
style="border: solid 1px black; background-color: rgb(242, 233, 218); width: 800px; height: 600px; display: inline-block; vertical-align: top"></div>
</div>
<div>
<p>This process flow diagram partially simulates the production process for gas and oil byproducts into their end products.</p>
<p>This diagram uses several GoJS features, including a custom TowerLink class that causes links to the tall "Tower" Nodes to be consistently aligned.</p>
<textarea id="mySavedModel" style="display: none">
{ "class": "GraphLinksModel",
"nodeDataArray": [
{ "key": "1", "category": "Output", "color": "yellow", "text": "Crude Oil", "location": "0 0", "textside": "left" },
{ "key": "2", "category": "Heater", "color": "red", "location": "150 -5" },
{ "key": "3", "category": "Tower", "color": "orange", "location": "250 -250", "height": 300 },
{ "key": "4", "category": "Heater", "color": "red", "location": "350 200"},
{ "key": "5", "category": "Tower", "color": "orange", "height": 50, "location": "400 -200" },
{ "key": "6", "category": "Tower", "color": "orange", "height": 50, "location": "400 -100" },
{ "key": "7", "category": "Tower", "color": "orange", "height": 50, "location": "400 0" },
{ "key": "8", "category": "Tower", "color": "orange", "height": 150, "location": "450 100" },
{ "key": "9", "category": "Output", "color": "yellow", "text": "Light Vacuum Gas Oil", "textside": "right", "location": "600 150" },
{ "key": "10", "category": "Output", "color": "yellow", "text": "Heavy Vacuum Gas Oil", "textside": "right", "location": "600 200" },
{ "key": "11", "category": "Output", "color": "yellow", "text": "Vacuum Residue", "textside": "right", "location": "600 300" },
{ "key": "12", "category": "Output", "color": "yellow", "text": "Kerosene", "textside": "right", "location": "600 -120" },
{ "key": "13", "category": "Output", "color": "yellow", "text": "Light Gas Oil", "textside": "right", "location": "600 -20" },
{ "key": "14", "category": "Output", "color": "yellow", "text": "Heavy Gas Oil", "textside": "right", "location": "600 80" },
{ "key": "15", "color": "yellow", "text": "Steam", "textside": "left", "location": "480 -60" },
{ "key": "16", "color": "yellow", "text": "Steam", "textside": "left", "location": "480 30" },
{ "key": "17", "category": "Tower", "color": "orange", "height": 50, "location": "400 -350" },
{ "key": "18", "category": "Output", "color": "yellow", "text": "Light Gas Oil", "textside": "right", "location": "600 -300" },
{ "key": "19", "category": "Output", "color": "yellow", "text": "Heavy Gas Oil", "textside": "right", "location": "600 -350" }
],
"linkDataArray": [
{ "from": "1", "to": "2" },
{ "from": "2", "to": "3", "fromSpot": "Right" },
{ "from": "3", "to": "4", "fromSpot": "Bottom", "toSpot": "LeftSide", "text": "Atmospheric Residue", "textFocus": "Left" },
{ "from": "3", "to": "5", "fromSpot": "1 0.2" },
{ "from": "5", "to": "3", "fromSpot": "0 0.75"},
{ "from": "3", "to": "6", "fromSpot": "1 0.5" },
{ "from": "6", "to": "3", "fromSpot": "0 0.75" },
{ "from": "3", "to": "7", "fromSpot": "1 0.8" },
{ "from": "7", "to": "3", "fromSpot": "0 0.75" },
{ "from": "4", "to": "8" },
{ "from": "8", "to": "9" },
{ "from": "8", "to": "10" },
{ "from": "8", "to": "11", "fromSpot": "Bottom" },
{ "from": "5", "to": "12", "fromSpot": "Bottom" },
{ "from": "6", "to": "13", "fromSpot": "Bottom" },
{ "from": "7", "to": "14", "fromSpot": "Bottom" },
{ "from": "15", "to": "6" },
{ "from": "16", "to": "7" },
{ "from": "3", "to": "17", "fromSpot": "Top", "toSpot": "Top" },
{ "from": "17", "to": "3", "fromSpot": "Bottom", "text": "Reflux", "textFocus": "Bottom" },
{ "from": "17", "to": "18" },
{ "from": "17", "to": "19" }
]}
</textarea>
</div>
</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>Geometry Path Strings</h4>
<p>
The <b>GoJS</b> <a href="../api/symbols/Geometry.html" target="api">Geometry</a> class controls the "shape" of a <a href="../api/symbols/Shape.html" target="api">Shape</a>,
whereas the <a href="../api/symbols/Shape.html#fill" target="api">Shape.fill</a> and <a href="../api/symbols/Shape.html#stroke" target="api">Shape.stroke</a> and other shape properties control the colors and appearance of the shape.
For common shape figures, there are predefined geometries that can be used by setting <a href="../api/symbols/Shape.html#figure" target="api">Shape.figure</a>.
However one can also define custom geometries.
</p>
<p>
One can construct any Geometry by allocating and initializing a <a href="../api/symbols/Geometry.html" target="api">Geometry</a> of at least one <a href="../api/symbols/PathFigure.html" target="api">PathFigure</a> holding some <a href="../api/symbols/PathSegment.html" target="api">PathSegment</a>s.
But you may find that using the string representation of a Geometry is easier to write and save in a database.
Use the static method <a href="../api/symbols/Geometry.html#parse" target="api">Geometry.parse</a> or the <a href="../api/symbols/Shape.html#geometryString" target="api">Shape.geometryString</a> property to transform a geometry path string into a <a href="../api/symbols/Geometry.html" target="api">Geometry</a> object.
</p>
<p>
More information can be found in the <a href="../intro/geometry.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#geometries">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>Links</h4>
<p>
The <a href="../api/symbols/Link.html" target="api">Link</a> class is used to implement a visual relationship between nodes.
Links are normally created by the presence of link data objects in the <a href="../api/symbols/GraphLinksModel.html#linkDataArray" target="api">GraphLinksModel.linkDataArray</a>
or by a parent key reference as the value of the <a href="../api/symbols/TreeModel.html#nodeParentKeyProperty" target="api">TreeModel.nodeParentKeyProperty</a> of a node data object
in a <a href="../api/symbols/TreeModel.html" target="api">TreeModel</a>.
More information can be found in the <a href="../intro/links.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#links">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
</div>
</div>
</body>
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</html>