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Voronoi

Creates an organic cellular pattern inspired by Voronoi diagrams. Procedural
seed points are distributed across the surface; cell boundaries form ridges
that push the profile outward (bump / honeycomb texture).

To print only the cell edges with open interiors (travel inside cells), use
Voronoi Cutout.

Preview

Voronoi preview

Effect Controls

Interactive preview is available in the interactive reader.

Parameters

Edge Width
Thickness of the ridge region: controls how wide the bump is near each cell boundary.
Depth (mm)
Height of the ridges (mm).
Phase
Rotates the entire Voronoi pattern around the circumference.
Spiral (deg)
Applies a helical twist to the pattern along the height of the model.

How It Works

The Voronoi pattern is generated procedurally using a hash-based seed grid:

  1. The cylindrical surface is mapped to a UV grid whose density is controlled by
  2. Each grid cell contains one seed point, offset from the cell centre by the
  3. For every point on the toolpath, the distance to the nearest seed (F1) and the
  4. The edge strength is F2 − F1 — small near cell boundaries, larger in cell interiors.
  5. Bump mode maps this to a radial offset so boundaries read as ridges.