Feature Volumes
Feature Volume – a three-dimensional spatial entity that defines a closed region of 3D space
- The shape of a volume is defined by the faces that bound the volume
A volume is bounded by one or more (unordered) collections of faces, defining an outer boundary and zero or more inner boundaries
Volumes may meet only along common faces
- Volume interiors may not intersect one another (Exception: Feature Topology Levels 0 through 4)