∞ forever components

Primary Grid Compositions

The Rebalancing Grid

neoplastic grid of black lines slides to new layouts while red, blue, and yellow cells fade in, resolving into a balanced composition every few seconds.

canvasmedium complexitymoderate motion

Open on the canvas to copy the code → Free account · 3 copies a day · membership goes unlimited

Live demo — the real component, running in a sandbox. One self-contained HTML file, zero dependencies. Open it on the canvas →
Worth keeping? Votes steer what gets built next — sign in to cast one, free to read

When to use it

Art/design hero backgrounds, generative-art showcases, or any landing that needs structured ambient motion.

When not to

Contexts requiring legible text overlays — the shifting bold grid competes with copy. Light background requires CSS override.

Working with an AI agent

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

Change the palette to cool tones: set C.red to '#e040fb', C.blue to '#00bcd4', C.yellow to '#76ff03', and slow transitions by increasing dur to 4000. 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

  • transition duration (dur=2600)
  • primary colors (C.red, C.blue, C.yellow, C.white, C.black)
  • line width (lw=7)
  • pause between transitions (1500ms idle guard)
  • grid line counts (3 vertical, 2 horizontal base)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • IIFE wrapper
  • prefers-reduced-motion guard (REDUCED flag + static draw path)
  • visibilitychange pause/resume
  • DPR-aware fitCanvas sizing
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)

Known limitations

  • Background color hardcoded in both CSS and C.white — must change both together
  • Fill cell distribution is random per cycle, color balance varies unpredictably

gridcanvasgeometriccolor-fieldloopgenerative

More Primary Grid Compositions components

  • Broadway Boogie WoogieColored squares pulse along yellow grid avenues like NYC traffic; intersection dots blink in red, blue, and yellow referencing neoplastic's 1943 painting.
  • Self-Assembling Compositionneoplastic grid builds itself every 4 s: cells scale in staggered, black lines draw outward, primary colors fill random regions, then recomposes anew.
  • Trading WeightRed and blue blocks trade mass across a fixed axis; a yellow counterweight keeps the neoplastic grid balanced. Slow eased transitions reseed randomly.
  • Self-Painting CellsA fixed asymmetric neoplastic grid whose cells autonomously cycle through red, blue, and yellow with smooth CSS transitions, like an unattended painter at…
  • Victory Boogie MarqueeA 9x9 neoplastic grid rotated 45° as a diamond; red, blue, and yellow squares ripple diagonally in a boogie-woogie march via time-stepped index.
  • Equilibrium Engineneoplastic grid with spring-driven lines; primary color blocks recolor every 2s; a center-of-mass dot tracks the weighted area of colored cells.