Flow field

A noise field defines an angle at every point; particles walk along it leaving translucent strokes that accumulate into organic flowing forms. The most recognizable, highest-impact generative technique.

Core idea

1. Scatter N particles.
2. Each step: sample angle = noise(x * scale, y * scale [, t]) * TAU * turns.
3. Move the particle along that angle; draw a faint line from old→new position.
4. Repeat for many steps; strokes overlap into flowing forms. Respawn particles that leave the canvas or exceed a lifetime.