Initial-velocity pattern. The local spawn position is passed to the
radial and custom samplers so the velocity can depend on where the
particle was spawned (radial = "outward from origin").
fixed — every particle gets the same velocity vector.
cone — uniformly random direction inside a cone of half-width
spread rad, centred on direction rad. Speed uniform in
[speedMin, speedMax].
radial — outward from the spawn point relative to the origin.
Speed uniform in [speedMin, speedMax]. If the spawn point is exactly
at the origin, falls back to a random direction.
custom — user-provided sampler. Receives RNG and the local spawn
position.
Initial-velocity pattern. The local spawn position is passed to the
radialandcustomsamplers so the velocity can depend on where the particle was spawned (radial = "outward from origin").fixed— every particle gets the same velocity vector.cone— uniformly random direction inside a cone of half-widthspreadrad, centred ondirectionrad. Speed uniform in[speedMin, speedMax].radial— outward from the spawn point relative to the origin. Speed uniform in[speedMin, speedMax]. If the spawn point is exactly at the origin, falls back to a random direction.custom— user-provided sampler. Receives RNG and the local spawn position.