Suprematist Geometric Forms
Cross & Circle
Suprematist shapes — cross, circle, bar, square — fling in from the nearest edge with cubic ease and a settling wobble, auto-composing on a warm white field.
canvasmedium complexitymoderate motionclick
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Worth keeping?
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When to use it
Art/design portfolio hero, generative canvas demos, Suprematist/Bauhaus-themed UI backgrounds.
When not to
Contexts requiring legible text overlays or a light interactive palette — background color is hardcoded warm cream and shapes accumulate up to 9 on screen.
Working with an AI agent
Every component ships agent-ready metadata. An example instruction for this one:
Change the palette to include white and add green: set PAL to {black:'#111111', red:'#d8261c', green:'#1a7a3c', white:'#f0ece2'} and update cols array accordingly. 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
- color palette (PAL object and cols array)
- shape pool size cap (forms.length > 9)
- auto-spawn interval (2.2 seconds)
- shape size range (0.07 + random * 0.05)
- wobble decay rate (exp factor 3)
- theme tokens (:root dark defaults + [data-theme=light] overrides)
Keep intact
- IIFE wrapper
- prefers-reduced-motion guard (REDUCED branch with static frames)
- visibilitychange pause/resume
- DPR-aware fitCanvas
- theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)
Known limitations
- Background color hardcoded in both CSS and canvas fillStyle — must change in two places
- Up to 9 shapes accumulate; oldest is dropped via shift(), not a clean fade-out
- Click target is the whole stage div, not individual shapes — no per-shape interaction
More Suprematist Geometric Forms components
- The Black Square, BreathingA near-black square barely scales and rotates on a warm white ground; a faint red ghost square offsets behind it. Suprematist stillness in motion.
- Suprematist Drift9 colored bars in black, red, blue, yellow rotate at random angles and drift slowly across a cream field via alternating CSS keyframes.
- Dynamic CompositionSuprematist shapes fly in from edges, hold in a white void, then depart — bars, circles, crosses in black, red, blue, yellow; never repeating.
- The Aviator's FieldSuprematist bars in black, red, blue, and yellow launch diagonally across an off-white field at steady tempo; reduced-motion shows a static arrangement.
- Weightless7 Suprematist shapes — squares, circles, bars, crosses in red/blue/yellow/white — orbit and self-spin around an invisible centre on a dark field.
- Red WedgeA bold red CSS triangle slowly sweeps across a cream field past faint black and grey rectangles, evoking Suprematist's Suprematist diagonal.