Flow Field
A fullscreen plane of domain-warped Perlin noise that drifts into flowing color bands. Speed, noise scale, contrast, and swirl reshape the field, while your pointer gently bends it.
Build a self-contained, performant Canvas 2D visual effect in a single React + TypeScript component.
Effect: "Flow Field".
Description: A fullscreen plane of domain-warped Perlin noise that drifts into flowing color bands. Speed, noise scale, contrast, and swirl reshape the field, while your pointer gently bends it.
Current settings: speed = 1, noise scale = 2.5, contrast = 1, swirl = 1.2, color = Dual, hue = 265, second hue = 195.
Tags: WebGL, shader, noise, pointer-reactive.
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.