GitHub Discussion #2209

https://github.com/clientIO/joint/discussions/2209

by Roman Bruckner

HTML

<html>
<head>
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/jointjs/3.6.5/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/3.6.5/joint.js"></script>
    
    </body>
</html>

JavaScript

const Link = joint.dia.Link.define('Link', {
    attrs: {
        line: {
            connection: true,
            stroke: 'white',
            strokeWidth: 8,
            strokeLinejoin: 'round',

        },
        outline: {
            connection: true,
            stroke: 'black',
            strokeWidth: 12,
            strokeLinejoin: 'round'
        },
        central: {
            connection: true,
            stroke: 'green',
            strokeWidth: 4,
            strokeLinejoin: 'round'
        }
    }
}, {
    markup: [{
        tagName: 'path',
        selector: 'outline',
        attributes: {
            'fill': 'none'
        }
    }, {
        tagName: 'path',
        selector: 'line',
        attributes: {
            'fill': 'none'
        }
    }, {
        tagName: 'path',
        selector: 'central',
        attributes: {
            'fill': 'none'
        }
    }]
});

const cellNamespace = {
  ...joint.shapes,
  Link
};

const graph = new joint.dia.Graph({}, {
  cellNamespace
});

const paper = new joint.dia.Paper({
  el: document.getElementById('paper'),
  width: 800,
  height: 900,
  model: graph,
  cellViewNamespace: cellNamespace,
  gridSize: 10,
  async: true,
  sorting: joint.dia.Paper.sorting.APPROX,
  linkPinning: false
});



// Example

const link = new Link({
    source: { x: 50, y: 50  },
    target: { x: 200, y: 50 }
});

link.addTo(graph);

paper.unfreeze();