Generative Geometry

Wave Interference

Four orbiting sources emit ripples drawn as glowing blue marching-squares contour lines on near-black. Pointer adds a fifth interactive wave source.

canvasheavy complexitymoderate motionpointer

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When to use it

Science/physics-themed hero backgrounds, generative art displays, dark ambient UI backdrops needing mathematical elegance.

When not to

Light backgrounds (hardcoded dark navy), low-end mobile (marching-squares grid is CPU-bound), or contexts needing legible foreground text.

Working with an AI agent

Every component ships agent-ready metadata. An example instruction for this one:

Change accent color from powder blue to green by replacing 'rgba(176,212,221' with 'rgba(100,255,160', increase grid resolution by changing cell to Math.max(5,m/80), and add a fifth source to the SRC array. Theme: dark tokens live in :root, the light variant in :root[data-theme="light"]; ?theme=light or a {type:'forever:theme'} postMessage switches at runtime.

Safe to edit

contour levels array (LV)
source orbit params (ox/oy/or/os/k per SRC entry)
cell resolution (Math.max(7,m/64))
accent color (rgb(176,212,221))
time step (t+=0.012)
theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

IIFE wrapper
prefers-reduced-motion guard + static draw fallback
visibilitychange pause/start
DPR-aware canvas sizing
theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)

Known limitations

Marching-squares loop over the full grid runs every frame — heavy on low-end devices
Background color hardcoded in CSS (#191B1D) and fillRect — must change both to retheme
Pointer nudge fades (nudge*=0.95) but never fully zeroes — minor residual effect persists

waveinterferencemarching-squarescontourgenerativephysicscanvas

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