Faceted Geometry
Creo Parametric allows you to build a surface CAD model on top of faceted or triangular data. Each facet is uniquely identified by a face normal and three vertices.
A facet is represented by the opaque handle ProFacet, while a set of facets is represented by the DHandle ProFacetSet. ProFacetSet has the same structure as the object ProModelitem and is defined as follows:
typedef struct pro_model_item
{
ProType type;
int id;
ProMdl owner;
} ProFacetSet;