PFlow Collision Shape (WSM) Modifier

Smooth Surface - Defines how the collision shape is considered for the simulation. When off, the simulation engine considers the shape to have "sharp" edges; when on, the shape is considered as an approximation of a smooth shape; thus particles that strike it can roll on its surface with sphere-like properties.

Important: Smooth Surface is applicable only when a dynamic sphere rolls on a deflector composed of triangles. Thus, in general, use the Smooth Surface option only in the following situation: PhysX Shape > Collide As is set to Sphere, and PFlow Collision Shape > Shape is set to Convex Hull or Geometry. Given these conditions, using Smooth Surface can result in more-stable simulations. Otherwise, leave it off.

Example:  PFlowCollisionShape_SmoothSurface.zip