Algorithmic lineages
Mark J. Stock: Sprawl
A generative branching structure made with off-lattice diffusion-limited aggregation, not a slime-mould simulation.
Work record
Sprawl is credited to artist, scientist, and programmer Mark J. Stock. A documented account describes a chaotic branching structure growing across a regular array of blocks; Stock identifies the primary algorithm as off-lattice diffusion-limited aggregation (DLA), with particles seeded at locations, random-walking, and sticking when they reach the existing structure. It was then radiosity rendered. [1]
The source located for this work does not supply a verified creation date or a public source-code repository. This page therefore does not assign either. Stock’s current biography confirms his practice works between decentralised agents, self-organised structures, numerical computation, and art. [2]
Method distinction
DLA is a stochastic aggregation method: walkers diffuse until they attach to a cluster, producing branched forms. It belongs in the growth-pattern taxonomy as particle aggregation / surface growth. Its imagery can resemble roots, lightning, mineral accretion, or slime mould, but it does not model Physarum polycephalum tube flow, biological sensing, or transport-network reinforcement.
Why it matters here. Sprawl is a strong reference for the productive contrast between a fixed urban-like grid and an emergent, irregular growth system. In a multi-ink plot, the regular support, accumulated cluster, and wandering/incipient particles could be separate layers—but that is an Algorithmics interpretation, not a description of Stock’s work.
Rights and images
No artwork image is embedded. Sprawl, its images, and all associated rights remain with Mark J. Stock and relevant rightsholders. The linked source is supplied for attribution and research, not as a reuse licence.