Outline

styles

This example shows how the outline attribute can be used to add a shadow to edges in a graph. Outlines are different from strokes as they appear on one side of the edge.

index.tsindex.htmlstyles.css

import Ogma from '@linkurious/ogma';

const ogma = new Ogma({
  container: 'graph-container'
});

ogma.styles.addEdgeRule({
  color: '#0094ff',
  outline: {
    enabled: true,
    color: '#30332E'
  }
});

// Change the outline style of hovered edges
ogma.styles.setHoveredEdgeAttributes({
  outline: {
    enabled: true,
    color: 'orange'
  }
});

const graph = await ogma.generate.grid({ rows: 3, columns: 3 });
await ogma.setGraph(graph);
await ogma.view.locateGraph();
// Remove the outline of a specific edge
await ogma.getEdge('0')!.setAttributes({ outline: false });

html

<!doctype html>
<html>
  <head>
    <meta charset="utf-8" />

    <link type="text/css" rel="stylesheet" href="styles.css" />
  </head>
  <body>
    <div id="graph-container"></div>
    <script type="module" src="index.ts"></script>
  </body>
</html>

css

#graph-container {
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  position: absolute;
  margin: 0;
  overflow: hidden;
}

Outline ​

Outline