∞ forever components

Constructivist

Dynamic Flag

A red banner waves and snaps along a black diagonal strut, with a white slab bar, rhythm tick marks, and a Suprematist-style square accent on a dark ground.

canvasmedium complexitymoderate motion

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When to use it

Constructivist or propaganda-art themed hero sections, political/historical editorial, bold ambient backgrounds needing strong diagonal composition.

When not to

Light backgrounds (hardcoded dark ground), contexts requiring legible text overlays over the flag area, or low-end devices where the per-frame blit + wave math may stutter.

Working with an AI agent

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

Change the banner color to deep blue by setting RED='#1a3bd1' and RED2='#122a9e', increase segment count to 20 (SEG=20), and slow the wave speed by changing t*4.0 to t*2.5. 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

  • banner color (RED, RED2 palette vars)
  • wave speed multiplier (t*4.0)
  • banner thickness (band=S*0.30)
  • segment count (SEG=14)
  • diagonal angle (ANG=-0.62)
  • white slab bar size (bw=len*0.40, bh=band*0.24)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • offscreen groundCv cache pattern (prevents gradient alloc in rAF)
  • prefers-reduced-motion static frame fallback
  • visibilitychange stop/play guard
  • IIFE wrapper
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)

Known limitations

  • Background color hardcoded to dark near-black — must edit BG and CSS to change
  • No touch or pointer interactivity — purely passive
  • White slab bar does not clip to banner edges on extreme wave amplitudes

constructivismflagwavecanvasgeometricdiagonalanimation

More Constructivist components

  • Diagonal ThrustRed and black arrow-tipped slabs sweep along a -28° diagonal axis over a black field; a dark-red disc and a bold type bar anchor the composition.
  • Red WedgeRed wedge drives into a recoiling black disc, scattering shards; bold slab type fades in after impact. Looping Constructivist poster animation.
  • Rotodynamic18 slab bars and word spokes radiate from an off-center hub, rotating at staggered speeds in a Rodchenko red-black-bone palette.
  • Floating FormsSuprematist field: tilted black square anchors red and off-white bars, squares, and a dot drifting in slow staggered CSS cycles on near-black.
  • MegaphoneA Constructivist megaphone emits expanding concentric red and paper-white arc rings across a dark field with bold diagonal bars. Runs autonomously.
  • Gear PosterThree SVG gears spin at different speeds while red diagonal bars slam in and slab-type text assembles — all on a dark constructivist grid.