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. More...
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). More...

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

typedef PatchTable::PatchHandle Handle

Definition at line 52 of file patchMap.h.

Constructor & Destructor Documentation

PatchMap

(

PatchTable const &

patchTable

)

Constructor.

Parameters

patchTable

A valid PatchTable

Member Function Documentation

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

patchFaceId	The index of the patch (Ptex) face
u	Local u parameter
v	Local 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.

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

• opensubdiv/far/patchMap.h