A coarse grid shared by the <Particles> inside it: they read its heat (lift) and density (smoke
self-shadowing). Splats are up to you (see ParticleGrid.splat: run them in a useFrame of a child
after the <Particles>); the grid resolves once per frame after its children update.
A coarse grid shared by the
<Particles>inside it: they read its heat (lift) and density (smoke self-shadowing). Splats are up to you (seeParticleGrid.splat: run them in auseFrameof a child after the<Particles>); the grid resolves once per frame after its children update.