DLA is a simulated growth process.
A particle sticky seed exists in a two dimensional field. Wandering
particles are generated along the edges of the field. Particles stick
to the seed to form a cluster. Every time a particle bumps into the
cluster, it sticks and stays put.
The resulting pattern is a typical fractal object, looking much
like something in the deep sea. An interesting phenomena is the
consistent creation of tremendous empty spaces, often in the form
of long channels or 'fnords'.
Press the REGENERATE button to start with a fresh, new seed object.
This simulation is called diffusion-limited aggregation. It is
an effective, although slow, growth model for natural systems such
as the deposition of metals during an electrochemical reaction.