Comet Overlay
An ambient overlay where comets streak in from the screen edges on an internal rhythm, glitter sparkles ring the center, corner drips rise on peaks, and a triple-arm spiral draws itself. Click to trigger a radial comet burst.
Build a self-contained, performant Canvas 2D visual effect in a single React + TypeScript component.
Effect: "Comet Overlay".
Description: An ambient overlay where comets streak in from the screen edges on an internal rhythm, glitter sparkles ring the center, corner drips rise on peaks, and a triple-arm spiral draws itself. Click to trigger a radial comet burst.
Current settings: comet rate = 1, glitter density = 1, spiral on, hue = 280, color = Single, second hue = 200.
Tags: Canvas 2D, particles, comet, ambient, click.
Requirements:
- Use requestAnimationFrame with a delta-time (dt) step, clamped to avoid jumps on tab switches.
- Render crisply: fully clear the canvas every frame (clearRect). Do NOT fake motion blur by painting a translucent background each frame, because that causes permanent 8-bit "ghost" burn-in. If you want trails, store each particle's recent positions and draw them as an explicit fading tail.
- If many short-lived particles are spawned, use an object pool (pre-allocate, reuse, swap-remove on death) to avoid GC pauses.
- Scale the backing store by devicePixelRatio (cap ~2) and handle resize.
- Pause when the tab is hidden or the canvas is off-screen; respect prefers-reduced-motion.
- Expose the listed settings as adjustable props/controls.