Anime Speed Lines
Manga action streaks that race across the frame. Radial mode leaves a clear center and lines converging inward, horizontal mode sweeps sideways, and a click sets the focus and flicks out an ink splat.
Build a self-contained, performant Canvas 2D visual effect in a single React + TypeScript component.
Effect: "Anime Speed Lines".
Description: Manga action streaks that race across the frame. Radial mode leaves a clear center and lines converging inward, horizontal mode sweeps sideways, and a click sets the focus and flicks out an ink splat.
Current settings: mode = Radial, density = 60, speed = 1, thickness = 2, ink splats on, color = Single, hue = 0, second hue = 210.
Tags: Canvas 2D, click, pooled, motion.
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.