OpenSubdiv
Loading...
Searching...
No Matches
PatchMap Class Reference

An quadtree-based map connecting coarse faces to their sub-patches. More...

#include <patchMap.h>

Public Types

typedef PatchTable::PatchHandle Handle
 

Public Member Functions

 PatchMap (PatchTable const &patchTable)
 Constructor.
 
Handle const * FindPatch (int patchFaceId, double u, double v) const
 Returns a handle to the sub-patch of the face at the given (u,v). Note that the patch face ID corresponds to potentially quadrangulated face indices and not the base face indices (see Far::PtexIndices for more details).
 

Detailed Description

An quadtree-based map connecting coarse faces to their sub-patches.

PatchTable::PatchArrays contain lists of patches that represent the limit surface of a mesh, sorted by their topological type. These arrays break the connection between coarse faces and their sub-patches.

The PatchMap provides a quad-tree based lookup structure that, given a singular parametric location, can efficiently return a handle to the sub-patch that contains this location.

Definition at line 49 of file patchMap.h.

Member Typedef Documentation

◆ Handle

Definition at line 52 of file patchMap.h.

Constructor & Destructor Documentation

◆ PatchMap()

PatchMap ( PatchTable const &  patchTable)

Constructor.

Parameters
patchTableA valid PatchTable

Member Function Documentation

◆ FindPatch()

PatchMap::Handle const * FindPatch ( int  patchFaceId,
double  u,
double  v 
) const
inline

Returns a handle to the sub-patch of the face at the given (u,v). Note that the patch face ID corresponds to potentially quadrangulated face indices and not the base face indices (see Far::PtexIndices for more details).

Returns a handle to the sub-patch of the face at the given (u,v).

Parameters
patchFaceIdThe index of the patch (Ptex) face
uLocal u parameter
vLocal v parameter
Returns
A patch handle or 0 if the face is not supported (index out of bounds) or is tagged as a hole

Definition at line 193 of file patchMap.h.


The documentation for this class was generated from the following file: