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Undertow

A generative flow field. Thousands of particles trace a living current — move your cursor to disturb it, click to send a shockwave.

visual canvasgenerativenoiseparticles

↑ made against black, and it stays black whichever substrate you pick — it reads as a print taped onto the page rather than part of the page.

A few thousand particles sample a slowly-morphing 3D simplex noise field to get their heading, so the structure is emergent rather than choreographed. Your pointer injects a force into that field, which means the whole population responds instead of just the particles under the cursor. Click and a ring expands outward through them. Five palettes, four forces, and a Save PNG that renders a clean frame.