Reaction Diffusion Canvas

Place reagents and vary reaction sliders to generate organic stripes, spots, and pulsing textures. A living painting toy based on the Gray-Scott reaction-diffusion model.

Reaction Parameters

0.055
0.062
1.00
0.50
1.0
8

Tools & Brush

8

Color Mode

Presets

gen: 0 | fps: 0

How to Play

  • Click and drag on the canvas to place or erase chemical B
  • Add B tool drops reagent; Erase B removes it; Seed scatters random dots
  • Adjust Feed (f) and Kill (k) to explore different pattern regimes
  • Tweak Diffuse A/B to change pattern scale and speed
  • Try Presets for known beautiful parameter regions
  • Change Color Mode for different visual styles
  • Scroll wheel adjusts brush size
  • Use Save Image to export the current frame as PNG