Shockwave Rings
Expanding polar-curve rings (rose, lemniscate, or circle) bloom and rotate from the center with a gradient stroke. Click to spawn a ring anywhere.
Build a self-contained, performant Canvas 2D visual effect in a single React + TypeScript component.
Effect: "Shockwave Rings".
Description: Expanding polar-curve rings (rose, lemniscate, or circle) bloom and rotate from the center with a gradient stroke. Click to spawn a ring anywhere.
Current settings: shape = Rose, petals = 5, expansion = 260, spin speed = 0.6, spin direction = Clockwise, hue = 190, color = Single, second hue = 280.
Tags: Canvas 2D, geometric, rings, additive, 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.