pub type SubShapeId = u32;Expand description
The index of a sub-shape within a shape that has several.
Identifies a part of a Compound, a triangle of a
TriMesh, a segment of a Polyline, a cell
of a HeightField, or a voxel of a
Voxels shape.
Query results carry the sub-shape they came from, so a hit against a composite shape says which
part answered. A shape with no sub-shapes, like a Ball or a
Cuboid, always reports 0.