HM_Topology
Contains information about mesh area topologies that includes a set of faces, edges and vertices and topological relations between them.
Syntax
struct HM_Topology {
int size;
int error_status;
int num_faces;
int num_loops;
int num_edges;
int num_vertices;
HM_Face* faces;
HM_FaceLoop* loops;
HM_Edge* edges
HM_Vertex* vertices;
double tolerance;
int num_components;
HM_Component* components;
};Type
HyperMesh Ext API Function
Description
This structure contains information about mesh area topologies that includes a set of faces, edges and vertices and topological relations between them. Detailed topological links between entities are defined within structures contained in arrays pointed to by members of the HM_Topology structure.
The structure information is declared in hm_extapi.h.
The members are: size, error_status, num_faces, num_loops, num_edges, num_vertices, faces, loops, edges, vertices, tolerance, num_components, and components
Inputs
- size
- Specifies the length, in bytes, of the structure. Use sizeof(HM_Topology) for this member. This is used to distinguish the current version of HM_Topology from possible future extended versions with additional members.
- error_status
- Used by API functions to return an error status. A value of zero indicates successful completion of a function using this structure.
- num_faces
- The total number of faces specified by this HM_Topology structure.
- num_loops
- The total number of loops specified by this HM_Topology structure.
- num_edges
- The total number of edges specified by this HM_Topology structure.
- num_vertices
- The total number of vertices specified by this HM_Topology structure.
- faces
- Pointer to an array of HM_Face structures. The number of entiries in the array must not be smaller than the value specified by the num_faces member of this HM_Topology structure.
- loops
- Pointer to an array of HM_FaceLoop structures. The number of entiries in the array must not be smaller than the value specified by the num_loops member of this HM_Topology structure.
- edges
- Pointer to an array of HM_Edge structures. The number of entiries in the array must not be smaller than the value specified by the num_edges member of this HM_Topology structure.
- vertices
- Pointer to an array of HM_Vertex structures. The number of entiries in the array must not be smaller than the value specified by the num_vertices member of this HM_Topology structure.
- tolerance
- A positive value of this member specifies the acceptable deviation of geometry points within this HM_Topology structure from the geometry of the model loaded in HyperMesh database.
- num_components
- The total number of components specified by this HM_Topology structure.
- components
- Pointer to an array of HM_Component structures. The number of entries in the array must not be smaller than the value specified by num_components.
Errors
None.