Eden, 1961 for Eden growth. Wilkinson and Willemsen, 1983 for invasion percolation. Multiple colored seeds race to claim territory, creating fractal-edged Voronoi-like boundaries where growth fronts collide.
How It Works
Eden growth picks a random boundary pixel to fill each step. Invasion percolation assigns random resistance to each pixel and grows into the lowest-resistance neighbor, creating drainage basin patterns. Multiple seeds compete for unclaimed space.
Applications
Models crystal growth, tumor growth, drainage basins, territorial expansion, and Voronoi tessellation with fractal boundaries. The competition between seeds creates the most visually interesting dynamics.
click to place colored seeds·choose model for different growth dynamics·speed controls growth rate