@mpecheux/rune-core

v1.9.3

Published

3 years ago

Rune is a lightweight Javascript lib for drawing graphs and flows

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mina.pecheux

js node graph

Rune

Rune is a lightweight Javascript lib for drawing graphs and flows. The full documentation is available at https://MinaPecheux.gitlab.io/rune-core/.

It is based on the Litegraph.js JS library: it relies on the same core mechanisms but extends it to provide additional features and in particular more styling/CSS customization!

It also contains an easy-to-use ready-made Vue component to display your graph with just some nodes and edges data.

Creating a Rune-vanilla graph

If you are in a plain HTML/Javascript context and are not using any frontend framework (such as VueJS or ReactJS), you can still display your graph easily in a canvas. Simply use the CDN script (or download it and use it locally): you will then have access to a global Rune object that contains the entire library.

You should also import or download the CSS stylesheet.

Here is a basic Rune example:

first, create your index.html file:

<html>
  <head>
    <link rel="stylesheet" href="https://unpkg.com/@mpecheux/rune-core/dist/styles/main.css">
    <script src="https://unpkg.com/@mpecheux/rune-core/dist/rune-core.min.js"></script>
    <script src="./script.js"></script>
  </head>
  <body>
    <canvas id="graph" width="600" height="400"></canvas>
  </body>
</html>

and then add in the Javascript script.js:

window.onload = () => {
  // instantiate the graph in the html canvas
  const graph = new Rune.Graph();
  const canvas = new Rune.Canvas("#graph", graph);

  // define the nodes and edges data
  const data = {
    nodes: [
      { id: "node-0", type: "basic/input-number" },
      { id: "node-1", type: "basic/output" }
    ],
    edges: [
      { source: "node-0", target: "node-1" }
    ]
  };

  graph.populateFromNodesAndEdges(data);

  let layout = Rune.layouts.getDagreLayout(data);
  layout = Rune.layouts.centerLayout(layout, 600, 400);
  Rune.layouts.applyLayout(graph.getNodes(), layout);
};

In a NodeJS environment with a frontend framework

You can use one of the provided frontend wrappers to easily draw your graph in your app:

for VueJS: Rune Vue is a basic Vue plugin wrapped around this lib

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To setup the project, run:

yarn install

Then, to compile and enable hot-reloading (for development):

yarn serve

To lint and fix the files, use:

yarn lint

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Rune

Creating a Rune-vanilla graph

In a NodeJS environment with a frontend framework

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