85 lines
3.3 KiB
HTML
85 lines
3.3 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Curviness</title>
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<meta name="description" content="Links with different amounts of curviness." />
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<!-- Copyright 1998-2017 by Northwoods Software Corporation. -->
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<meta charset="UTF-8">
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<script src="../release/go.js"></script>
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<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
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<script id="code">
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function init() {
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if (window.goSamples) goSamples(); // init for these samples -- you don't need to call this
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var $ = go.GraphObject.make; // for conciseness in defining templates
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myDiagram = $(go.Diagram, "myDiagramDiv", // create a Diagram for the DIV HTML element
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{
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initialContentAlignment: go.Spot.Center, // center the content
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"undoManager.isEnabled": true
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});
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// define a simple Node template
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myDiagram.nodeTemplate =
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$(go.Node, "Auto",
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new go.Binding("position", "position"),
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$(go.Shape, "RoundedRectangle",
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// Shape.fill is bound to Node.data.color
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new go.Binding("fill", "color")),
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$(go.TextBlock,
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{ margin: 3 }, // some room around the text
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// TextBlock.text is bound to Node.data.key
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new go.Binding("text", "key"))
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);
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myDiagram.linkTemplate =
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$(go.Link, go.Link.Bezier,
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// when using fromSpot/toSpot:
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{ fromSpot: go.Spot.Left, toSpot: go.Spot.Left },
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new go.Binding("fromEndSegmentLength", "curviness"),
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new go.Binding("toEndSegmentLength", "curviness"),
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// if not using fromSpot/toSpot, use a binding to curviness instead:
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//new go.Binding("curviness", "curviness"),
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$(go.Shape, // the link shape
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{ stroke: "black", strokeWidth: 1.5 }),
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$(go.Shape, // the arrowhead, at the mid point of the link
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{ toArrow: "OpenTriangle", segmentIndex: -Infinity })
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);
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// create the model data that will be represented by Nodes and Links
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myDiagram.model = new go.GraphLinksModel(
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[
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{ position: new go.Point(100, 100), key: "Alpha", color: "lightblue" },
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{ position: new go.Point(100, 200), key: "Beta", color: "orange" },
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{ position: new go.Point(100, 300), key: "Gamma", color: "lightgreen" },
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{ position: new go.Point(100, 400), key: "Delta", color: "pink" }
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],
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[
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// The links have different curviness values.
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// Set by hand here, they are larger when the two nodes are farther away
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{ from: "Alpha", to: "Beta", curviness: 20 },
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{ from: "Alpha", to: "Gamma", curviness: 40 },
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{ from: "Gamma", to: "Delta", curviness: 20 },
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{ from: "Delta", to: "Alpha", curviness: 60 }
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]);
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}
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</script>
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</head>
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<body onload="init()">
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<div id="sample">
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<div id="myDiagramDiv" style="border: solid 1px black; width:500px; height:500px"></div>
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<p>
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This sample explicitly binds the <a>Link.curviness</a> property, so that some links bend out farther than others.
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</p>
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<p>
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The link template also places an arrowhead at the middle of the link,
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by explicitly setting the arrowhead's <a>GraphObject.segmentIndex</a> to -Infinity
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<i>after</i> setting <a>Shape.toArrow</a>.
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</p>
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</div>
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</body>
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</html>
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