taut foam

Bubbles grow from their centres until they meet, and the borders between them are soap films: each one pulls taut, and three meet at equal angles. 2D version · 3D foam · cells dividing

Left button starts a bubble, right button or Shift bursts one. Keys: N new centres, A add a centre, M symmetry, Space pause.

Palette Symmetry Bend the whole field into the wedge Size of the bent field

Films as lines Bubbles as spline shells (experimental) Line width Fill the bubbles Large bubbles Large from, times the median area Fill Plateau borders Line width by Shimmer of a thin film Coarsening Bursts per 1000 steps Measure the films

Field size Kernel radius Noise Steps per frame

Centres

Count Size of a new bubble Grow inside a circle Size of the circle