∞ forever components

Op Art & Moire

Concentric Pulse

26 white rings march outward from center in a ~6s loop; a second scaled field produces slow moire interference fringes on a dark background.

canvasmedium complexitymoderate motion

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Live demo — the real component, running in a sandbox. One self-contained HTML file, zero dependencies. Open it on the canvas →
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When to use it

Dark-mode hero backgrounds, loading screens, or meditative ambient displays needing a hypnotic depth illusion.

When not to

Light-background UIs (background hardcoded dark). Contexts where moire shimmer may trigger visual sensitivity.

Working with an AI agent

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

Change RINGS to 18, increase PERIOD to 9000 for a slower pulse, and tint rings amber by replacing "rgba(255,255,255," with "rgba(255,200,100,". 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

  • ring count (RINGS=26)
  • animation cycle duration (PERIOD=6200)
  • moire scale factor (GAP*1.058)
  • moire counter-march speed (phase*0.62)
  • stroke opacity range (0.10 + 0.82*op)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • DPR-aware canvas sizing and setTransform
  • visibilitychange pause/resume
  • reduced-motion static fallback (drawOneFrame)
  • IIFE wrapper
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)

Known limitations

  • Background hardcoded near-black in both CSS and canvas — edit both to change
  • No pointer interactivity — purely passive
  • Moire intensity is fixed with no runtime control

op-artconcentricringsmoirecanvasambientblack-and-white

More Op Art & Moire components

  • Moire DriftTwo concentric ring grids drift apart with opposed phase, producing slow-shifting moire interference fringes via canvas lighter/difference compositing.
  • Bulge GridA 22x22 white line grid on black warps radially outward as an invisible lens drifts on a slow lissajous path; a faint offset twin grid creates moire shimmer.
  • Wave ColumnsVertical B&W stripe columns undulate via detuned sine waves, creating a woven fabric ripple with a central bulge illusion and moire interference.
  • Checker WarpA black-and-white checkerboard bends around a breathing lens at the center, slowly rotating and drifting for a hypnotic op-art illusion.
  • Line Illusion64 horizontal lines kink at a center crease with differential shading, creating a breathing 3D fold illusion of two angled sheets.
  • Spiral VertigoTwo counter-rotating Archimedean spirals at near-equal pitch create shifting moire fringes and illusory depth pull on a dark background.