Particles: 0
Presets
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Growth presets tune stickiness, walker count, and spawn distance to mimic different natural DLA phenomena.

Dendrite: Default balanced growth — mimics manganese oxide crystal dendrites on limestone surfaces.
Coral: Low sticking probability with many walkers mimics calcium carbonate deposition in marine organisms — radial, dense branching.
Lightning: Maximum stickiness with wide spawn gap produces thin, jagged branches like Lichtenberg figures in electrical discharge.
Frost: Moderate stickiness creates the feathery patterns of ice crystal nucleation on cold glass.
Snowflake: Tuned for hexagonal-like symmetry seen in ice crystal formation.
Lichen: Very low stickiness with dense walkers — slow, compact growth like crustose lichen on rock. Witten & Sander (1981); Meakin (1983) cluster-cluster aggregation
Seed Shape
Palette
100%
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Sticking probability — the chance a random walker attaches on contact with the cluster. Lower values produce denser, more compact structures as particles penetrate deeper before sticking. Controls fractal dimension: ~1.71 at 100%, approaching 2.0 at low values
2000
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Active walkers — number of particles simultaneously performing random walks. More walkers = faster growth but doesn't change the structure's shape.
15
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Spawn distance — how far from the cluster edge new walkers appear. Larger gaps produce more diffuse, tree-like branching; smaller gaps create denser growth.
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Diffusion-Limited Aggregation — random-walking particles stick on contact, building fractal structures. The resulting clusters have a fractal dimension of ~1.71, between a line (1) and a filled area (2). This self-similar branching appears at every scale.

First described by Witten & Sander (1981) "Diffusion-Limited Aggregation, a Kinetic Critical Phenomenon." Extended by Meakin (1983) for cluster-cluster aggregation.

Click anywhere on the canvas to place additional seed points. Witten & Sander, Phys. Rev. Lett. 47 (1981); Meakin, Phys. Rev. A 27 (1983)