Question 1

How to render Voronoi diagrams with Javascript-Voronoi using Canvas?

Accepted Answer

The library provides geometric data only; you must loop through diagram.edges and use Canvas API methods like context.beginPath() and context.lineTo() to draw each edge based on its vertices. Example code is hinted in demos but requires custom implementation.

Question 2

Javascript-Voronoi vs D3-voronoi: which should I use?

Accepted Answer

Javascript-Voronoi is a lightweight, dependency-free computational engine ideal for custom control. D3-voronoi is part of D3.js and offers built-in SVG rendering and integration with data visualization workflows. Choose based on whether you need pure computation or ready-made visualization tools.

Question 3

Can Javascript-Voronoi handle dynamic updates with new points?

Accepted Answer

Yes, call voronoi.compute() with updated sites arrays. For better performance, use voronoi.recycle(diagram) to reuse memory before recomputing, as described in the README's optimization section.

Question 4

Is Javascript-Voronoi still maintained or updated?

Accepted Answer

The README shows last significant changes in 2013, and demos use outdated tech, indicating low activity. It's stable for basic use but may lack modern features or bug fixes.

Question 5

What are common issues when using Javascript-Voronoi?

Accepted Answer

Watch for border edges where rSite is null, and ensure the bounding box (bbox) is set correctly to avoid infinite edges. Also, some cells may have empty halfedges, requiring checks before rendering polygons.

Question 6

How to integrate Javascript-Voronoi with React?

Accepted Answer

Wrap it in a React component: compute the diagram in useEffect or a handler, then render using Canvas or SVG based on the data. Since it's pure JS, state management and updates must be handled manually within React's lifecycle.

Javascript-Voronoi

What is Javascript-Voronoi?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions