Panning

This example shows how to navigate within the view by moving the camera. Use your mouse to drag the camera around the view.

index.tsindex.htmlstyles.css

import Ogma from '@linkurious/ogma';

const ogma = new Ogma({
  container: 'graph-container',
  options: {
    interactions: { zoom: { onDoubleClick: true } },
    backgroundColor: '#dddddd'
  }
});

ogma.events.on('nodesDragStart', eventData => {
  console.log('start', eventData);
  // console.log('Starting drag nodes ' +
  // eventData.nodes.getId().join() +
  // ' at (' + eventData.x + ', ' + eventData.y + ')');
});

ogma.events.on('nodesDragProgress', eventData => {
  console.log('progress', eventData);
  // console.log('Dragging node ' + eventData.node.getId() +
  // ' to (' + eventData.x + ', ' + eventData.y + ')');
});

ogma.events.on('nodesDragEnd', eventData => {
  console.log('end', eventData);
  // console.log('Ending drag node ' + eventData.node.getId() +
  // ' at (' + eventData.x + ', ' + eventData.y + ')');
});

// Generate a random graph and assign it to Ogma.
const graph = await ogma.generate.random({ nodes: 15, edges: 30 });
await ogma.setGraph(graph);
await ogma.view.locateGraph();

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

body,
html {
  width: 100%;
  height: 100%;
  text-align: center;
  margin: 0;
}

#graph-container {
  width: 50%;
  height: 50%;
  margin: auto;
  overflow: hidden;
  display: block;
  position: relative;
  top: 25%;
  border: 1px solid #444444;
}

Panning ​

Panning