Voronoi Sketch Generator Script for Autodesk Fusion 360
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Hans Kellner
Hans Kellner Update README.md
Added screencast video link to README
Latest commit 512ee07 Oct 19, 2018


Fusion360Voronoi Fusion360Voronoi

Fusion 360 Voronoi

This script is used for generating voronoi sketches in Autodesk Fusion 360. Once created, these sketches may then be used for creating or modifying models.

JavaScript Add-In Support in Fusion 360

Note that JavaScript development (editing/debugging) is no longer supported within Fusion 360. But existing JavaScript add-ins, such as Voronoi can still be installed and run.

More information here:


Image of Voronoi Table

Image of Voronoi 128 Cell Sample


Please follow the instructions here:


Note, you can still add scripts implemented in JavaScript.


  1. Run the "Voronoi" script from the Script Manager
  2. The settings dialog will be shown. Adjust to your preferences:

Image of Voronoi Settings

  • Sketch Selection: Select a sketch to insert Voronoi or none to create a sketch.
  • Edge Style: Straight or Curved edges
  • Number of Cells (2-256) : Number of cells created in the sketch
  • Number of Lloyd's relax iterations:
  • Pattern width : Width of the area filled with cells
  • Pattern height : Height of the area filled with cells
  • % to scale cells (10-100) : Percentage to scale down each of the cells
  1. Click OK to generate the sketch

Note that a large number (> 128) of cells may take a while to generate (sometimes several minutes).

Once the voronoi sketch is created I will usually project the geometry onto a surface and then modify from there. Note that projecting onto a curved surface will not work at this time. In this case I'll use push/pull on the voronoi geometry to modify existing models. The image above was created using this method and a 128 cell voronoi pattern.

Video Screencast

Please view the following screencast to see Voronoi in use: Using the Voronoi v2 add-in for Fusion 360


Examples posted on my Fusion 360 project gallery.

Image of Voronoi 256 Cell Sample

Image of Voronoi 256 Cell Sample


  • One cell may not be filled after generation. Adjusting a control point then forces it to fill.
  • It's not possible to adjust the spline's knots and strengths therefore the curves don't conform as close as they should. The "% Scale Cell" value is a workaround for this. Scaling down the cells reduces the possible overlap of the cells.


This code makes use of the Raymond Hill's well done Javascript-Voronoi code: https://github.com/gorhill/Javascript-Voronoi

Lloyd's Relaxation Support

Github user LeonFedotov kindly submitted the changes to support Lloyd's relaxation algorithm. More information about the algorithm on Wikipedia.