Data Structures

struct  A3DTopoItemOwner
 Structure is a linked list for storing topology items owners. More...
 

Functions

A3DStatus A3DTopoItemOwnersGet (A3DTopoItemOwnersManager *pTopoItemOwnersManager, const A3DTopoItem *pTopoItem, A3DTopoItemOwner **ppTopoItemOwner)
 Gets owners of topology item. More...
 
A3DStatus A3DTopoItemOwnersManagerGet (const A3DRiRepresentationItem *pBrepOwner, A3DTopoItemOwnersManager **ppTopoItemOwnersManager)
 Structure for storing topology items owners. More...
 

Detailed Description

Version
5.0

Function Documentation

A3DStatus A3DTopoItemOwnersManagerGet ( const A3DRiRepresentationItem pBrepOwner,
A3DTopoItemOwnersManager **  ppTopoItemOwnersManager 
)

Structure for storing topology items owners.

Version
5.0 Methods and structures dedicated to managing the link between topology items and their owner(s).

Creates manager of topology items fron an A3DRiRepresentationItem

Version
5.0
This function creates a map, on request, between topological items and linked lists of owners. When the map is built, the function A3DTopoItemOwnersGet lets you retrieve owners of specific topological item. For example, if you need the faces owner of edges, first you build your map, then you retrieve the owner list for each edge. The following code shows how to use it.
1 // map creation
2 A3DTopoItemOwnersManager* pTopologyOwnersManager = NULL;
3 if(A3DTopoItemOwnersManagerGet(pBrepOwner, pTopologyOwnersManager) != A3D_SUCCESS)
4  return A3D_ERROR;
5 if(pTopologyOwnersManager == NULL)
6  return A3D_ERROR;
7 
8 // edge owners = CoEdge
9 A3DTopoItemOwner* pOwningCoEdge = NULL;
10 A3DTopoItemOwnersGet(pTopologyOwnersManager, pEdge, pOwningCoEdge);
11 while( pOwningCoEdge!=NULL)
12 {
13  // coedge owners = Loop
14  A3DTopoItemOwner* pOwningLoop = NULL;
15  A3DTopoItemOwnersGet(pTopologyOwnersManager, pOwningCoEdge->m_pTopoItem, pOwningLoop);
16  while( pOwningLoop!=NULL)
17  {
18  // Loop owners = face
19  A3DTopoItemOwner* pOwingFace = NULL;
20  A3DTopoItemOwnersGet(pTopologyOwnersManager, pOwningLoop->m_pTopoItem, pOwingFace);
21  while( pOwingFace!=NULL)
22  {
23  if(A3DEntityGetType(pOwingFace->m_pTopoItem, &entityType) != A3D_SUCCESS)
24  return A3D_ERROR;
25  if(entityType != kA3DTypeTopoFace)
26  return A3D_ERROR;
27 
28  pOwingFace = pOwingFace->m_pNext;
29  }
30  pOwningLoop = pOwningLoop->m_pNext;
31  }
32  pOwningCoEdge = pOwningCoEdge->m_pNext;
33 }

Note that, if A3DTopoItemOwnersManagerGet is called several times with the same representation item, the map is not recomputed; and if the representation item is null, the map is released.

Returns
A3D_SUCCESS
A3D_INVALID_ENTITY_TYPE
A3D_ERROR
A3DStatus A3DTopoItemOwnersGet ( A3DTopoItemOwnersManager *  pTopoItemOwnersManager,
const A3DTopoItem pTopoItem,
A3DTopoItemOwner **  ppTopoItemOwner 
)

Gets owners of topology item.

Version
5.0
Returns
A3D_SUCCESS
A3D_INVALID_ENTITY_TYPE
A3D_ERROR