Particles & Physics
Pollen Brownian Drift
Up to 260 warm and grey motes drift sideways on a cream field with random Brownian jitter, leaving faint fading trails; pointer and click stir gusts.
canvasmedium complexitysubtle motionpointer
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Worth keeping?
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When to use it
Organic/nature-themed backgrounds, editorial hero sections with a soft paper aesthetic, ambient loading screens.
When not to
Dark-background designs (background hardcoded cream). Content-heavy layouts where floating particles distract from text.
Working with an AI agent
Every component ships agent-ready metadata. An example instruction for this one:
Change the particle palette to cool blue-grey tones by setting the warm accent RGB (192,86,60) to (80,130,200), reduce mote count cap to 160, and slow drift by setting the drift base to 0.10. 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
- particle count cap (N=260)
- laminar drift speed (drift formula, +0.18 base)
- mote radius range (0.7–3.1 * S)
- accent color RGB (192,86,60 warm)
- background/trail wash color (#f2efe6 / rgba 0.14 alpha)
- theme tokens (:root dark defaults + [data-theme=light] overrides)
Keep intact
- DPR-aware canvas sizing and setTransform
- IIFE wrapper
- reduced-motion static fallback (rest())
- visibilitychange pause/resume
- theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)
Known limitations
- Background hardcoded cream (#f2efe6) in both CSS and canvas fill — must change both to retheme
- No aria semantics on canvas — decorative only
- Gust decays via 0.95 multiplier per frame; very slow framerate makes gust persist longer
More Particles & Physics components
- Gravity Dot RainMulticolored dots fall under gravity with motion trails, bounce off the floor, and scatter away from the cursor on a dark navy canvas.
- Firework BurstColorful glowing sparks burst radially, fall under gravity, and fade against a dark sky. Auto-launches bursts; click anywhere to add more.
- Confetti CannonColored rectangles fire from bottom corners in auto-cycling bursts, tumbling with gravity and flip animation. Click anywhere to trigger a cursor burst.
- Bouncing Balls7–14 glossy pastel balls bounce off walls and collide with elastic physics; cursor repels balls within a 70px radius.
- Spring ChainA 16-node spring chain whips and follows the cursor in a lime-to-gold gradient; drifts in a figure-eight pattern when idle.
- Cloth Wave GridAn 11x11 wireframe grid ripples like cloth via sine/cosine waves in cyan-to-violet hues; mesh nodes bulge away from the cursor on hover.