Canvas
A high-performance, Canvas-based particle emitter.
Particles are simulated every animation frame and drawn directly into a single drawBehind layer, which makes this emitter suitable for large counts (1 000+) of lightweight particles such as circles, tinted images, text, or custom paths. For particles that must themselves be arbitrary @Composable content, use ParticlesEmitter instead.
The emitter runs continuously: it spawns CanvasEmitterConfig.particlePerSecond particles per second, advances each one with incremental Euler integration (v += a·dt, p += v·dt) using the gravity vector derived from CanvasEmitterConfig.gravityStrength and CanvasEmitterConfig.gravityAngle, applies the configured EdgeBehavior at the composable bounds, and removes each particle once it outlives its randomized lifespan.
Parameters
the Modifier applied to the emitter surface. The emitter fills the available space and uses the resulting size as the simulation bounds, so pass a sizing modifier such as Modifier.fillMaxSize().
the CanvasEmitterConfig describing emission rate, particle appearance, physics, and edge behavior. Updating the config while the emitter is composed is picked up on the next frame without restarting the simulation.