JointJS Link Anchor

by Roman Bruckner

HTML

<html>
<head>
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/jointjs/3.5.5/joint.css" />
</head>
<body>
      <!-- content -->
      <div id="paper"></div>         

      <!-- dependencies -->
        <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.20/lodash.min.js"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.4.0/backbone.js"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/jointjs/3.5.5/joint.js"></script>
    
    </body>
</html>

CSS

.joint-paper {
  display: inline-block;
  border: 1px solid gray;
}

JavaScript

const graph = new joint.dia.Graph();

const paper = new joint.dia.Paper({
    el: document.getElementById('paper'),
    width: 800,
    height: 800,
    model: graph,
    async: true,
    interactive: { linkMove: false },
    defaultAnchor: {
        name: 'modelCenter'
    },
    defaultConnectionPoint: {
        name: 'boundary',
    },
    defaultRouter: {
        name: 'normal'
    }
});


var el1 = new joint.shapes.standard.Rectangle({
    position: { x: 100, y: 100 },
    size: { width: 100, height: 100 }
});

var el2 = new joint.shapes.standard.Rectangle({
    position: { x: 100, y: 230 },
    size: { width: 100, height: 100 }
});

var el3 = new joint.shapes.standard.Rectangle({
    position: { x: 100, y: 370 },
    size: { width: 100, height: 100 }
});

var el4 = new joint.shapes.standard.Rectangle({
    position: { x: 100, y: 500 },
    size: { width: 100, height: 100 }
});

var link1 = new joint.shapes.standard.Link({
    source: { id: el1.id },
    target: { id: el4.id },
    vertices: [{
        x: 500, y: 250
    }, {
        x: 500, y: 450
    }]
});

var link2 = new joint.shapes.standard.Link({
    source: { id: el2.id },
    target: { id: link1.id },
});

var link3 = new joint.shapes.standard.Link({
    source: { id: el3.id },
    target: { id: link1.id },
});

graph.resetCells([
    el1, el2, el3, el4, link1, link2, link3
]);

link3.findView(paper).addTools(new joint.dia.ToolsView({
    tools: [
        new joint.linkTools.TargetAnchor()
    ]
}));