Topological item owners

Data Structures

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

Typedefs

typedef void * A3DTopoItemOwnersManager
 Structure for storing topology items owners. More...
 

Functions

A3DStatus A3DTopoItemOwnersGet (A3DTopoItemOwnersManager *pTopoItemOwnersManager, const A3DTopoItem *pTopoItem, A3DTopoItemOwner *&pTopoItemOwner)
 Gets owners of topology item. More...
 
A3DStatus A3DTopoItemOwnersManagerGet (const A3DRiRepresentationItem *pBrepOwner, A3DTopoItemOwnersManager *&pTopoItemOwnersManager)
 Creates manager of topology items fron an A3DRiRepresentationItem. More...
 

Detailed Description

Version
5.0

Typedef Documentation

typedef void* A3DTopoItemOwnersManager

Structure for storing topology items owners.

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

Function Documentation

A3DStatus A3DTopoItemOwnersManagerGet ( const A3DRiRepresentationItem pBrepOwner,
A3DTopoItemOwnersManager *&  pTopoItemOwnersManager 
)

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.
// map creation
A3DTopoItemOwnersManager* pTopologyOwnersManager = NULL;
if(A3DTopoItemOwnersManagerGet(pBrepOwner, pTopologyOwnersManager) != A3D_SUCCESS)
return A3D_ERROR;
if(pTopologyOwnersManager == NULL)
return A3D_ERROR;
// edge owners = CoEdge
A3DTopoItemOwner* pOwningCoEdge = NULL;
A3DTopoItemOwnersGet(pTopologyOwnersManager, pEdge, pOwningCoEdge);
while( pOwningCoEdge!=NULL)
{
// coedge owners = Loop
A3DTopoItemOwner* pOwningLoop = NULL;
A3DTopoItemOwnersGet(pTopologyOwnersManager, pOwningCoEdge->m_pTopoItem, pOwningLoop);
while( pOwningLoop!=NULL)
{
// Loop owners = face
A3DTopoItemOwner* pOwingFace = NULL;
A3DTopoItemOwnersGet(pTopologyOwnersManager, pOwningLoop->m_pTopoItem, pOwingFace);
while( pOwingFace!=NULL)
{
if(A3DEntityGetType(pOwingFace->m_pTopoItem, &entityType) != A3D_SUCCESS)
return A3D_ERROR;
if(entityType != kA3DTypeTopoFace)
return A3D_ERROR;
pOwingFace = pOwingFace->m_pNext;
}
pOwningLoop = pOwningLoop->m_pNext;
}
pOwningCoEdge = pOwningCoEdge->m_pNext;
}

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 *&  pTopoItemOwner 
)

Gets owners of topology item.

Version
5.0
Returns
A3D_SUCCESS
A3D_INVALID_ENTITY_TYPE
A3D_ERROR