Region Voronoi

Overview

Generates regions by dividing the canvas according to distance from scattered seed points. It excels at point-centered Voronoi patterns—paving stones, bubbles, spots, and mineral grains—which become useful bases for natural textures when colored with region_fill.

Usage tips

• The go-to paving-stone recipe is region_voronoi(GridJitter, Manhattan) → region_fill + region_border, overlaying the boundary lines as mortar joints.
• Choose placement by intent: GridJitter produces evenly sized grains suited to paving, while Random creates more size variation for natural materials.
• point_count determines grain size; more points produce finer grains. With 32 points on a 64×64 canvas, each grain is roughly 11 pixels square.

Related nodes

• region_cells — general-purpose division into even working surfaces
• region_fill / region_border — fills and mortar joints
• region_merge_small — clean up grains that are too small
• region_warp — distort division lines

Divides pixels by their distance from seed points and directly generates a final-size RegionMap. It is suited to paving stones, spots, island-like distributions, bubbles, and mineral patterns.

Key parameters

How to use

1. Set width / height to match the final image.
2. Choose GridJitter for a natural but even distribution, or Random for rough variation.
3. Use Manhattan or Chebyshev for angular, pixel-art-like shapes.

When mask is connected, seed points are placed only inside the active mask area and the outside is treated as OUTSIDE. Pixels where lightness * alpha >= 0.5 are active. An arbitrary mask shape takes priority, so wrap_x / wrap_y are disabled in the output while a mask is connected.

This resembles Region Cells, but is intended for surfaces divided by distance from seed points. Use it for point-centered regions such as round stones, bubbles, islands, and spots. Region Cells is easier to adjust when you want to divide the entire canvas into evenly distributed working surfaces.