taut clusters

A wave grows every stone by the cluster radius, the blobs that touch agree on one label, and each label is pulled taut around its own stones. Stones closer than two radii share a band. 2D version

Left button draws stones, right button or Shift erases. Keys: N new stones, A add a stone, R restart, Space pause.

Cluster radius Bands Break bridges thinner than Bands a cell has room for Automaton

Potts model

Temperature Repulsion between bands Sweeps per frame

Wide kernel

Kernel radius Noise Steps per frame

Stones

Count Size Clumps (0: evenly) Brush Show convex hulls