Voronoi v1 — Cells
Shattered-glass cells drift and reshuffle: every pixel takes the colour of its nearest moving site, shaded toward the seams, with a swappable distance metric.
The classic brute-force Voronoi: every buffer pixel is painted with the colour of its nearest site. Optional per-cell shading (darken away from the site) and 1-px cell edges (where the nearest-site id changes) give the stained-glass / shattered-glass look. The distance metric is fully swappable.
