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 faceid, float u, float v) const
	Returns a handle to the sub-patch of the face at the given (u,v). Note : the faceid corresponds to quadrangulated face indices (ie. quads count as 1 index, non-quads add as many indices as they have vertices) 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 set of PatchTable

Member Function Documentation

PatchMap::Handle const * FindPatch ( int  faceid, float  u, float  v  ) const

inline

Returns a handle to the sub-patch of the face at the given (u,v). Note : the faceid corresponds to quadrangulated face indices (ie. quads count as 1 index, non-quads add as many indices as they have vertices)

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

Parameters

faceid	The index of the face
u	Local u parameter
v	Local v parameter

Returns

A patch handle or NULL if the face does not exist or the limit surface is tagged as a hole at the given location

Definition at line 149 of file patchMap.h.

---

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

• opensubdiv/far/patchMap.h