HdMeshUtil Class Reference

#include <meshUtil.h>

Classes
struct	EdgeEquality
struct	EdgeHash

Public Types
using	EdgeMap = std::unordered_map< GfVec2i, int, EdgeHash, EdgeEquality >
using	ReverseEdgeMap = std::unordered_map< int, GfVec2i >

Public Member Functions
	HdMeshUtil (HdMeshTopology const *topology, SdfPath const &id)
virtual	~HdMeshUtil ()
HD_API void	ComputeTriangleIndices (VtVec3iArray *indices, VtIntArray *primitiveParams, VtVec3iArray *trianglesEdgeIndices=nullptr)
HD_API bool	ComputeTriangulatedFaceVaryingPrimvar (void const *source, int numElements, HdType dataType, VtValue *triangulated)
HD_API void	ComputeQuadInfo (HdQuadInfo *quadInfo)
	Generate a quadInfo struct for the input topology. More...
HD_API void	ComputeQuadIndices (VtVec4iArray *indices, VtVec2iArray *primitiveParams, VtVec4iArray *quadsEdgeIndices=nullptr)
HD_API bool	ComputeQuadrangulatedPrimvar (HdQuadInfo const *qi, void const *source, int numElements, HdType dataType, VtValue *quadrangulated)
HD_API bool	ComputeQuadrangulatedFaceVaryingPrimvar (void const *source, int numElements, HdType dataType, VtValue *quadrangulated)

Static Public Member Functions
static HD_API int	ComputeNumQuads (VtIntArray const &numVerts, VtIntArray const &holeIndices, bool *invalidFaceFound=NULL)
static int	EncodeCoarseFaceParam (int faceIndex, int edgeFlag)
static int	DecodeFaceIndexFromCoarseFaceParam (int coarseFaceParam)
static int	DecodeEdgeFlagFromCoarseFaceParam (int coarseFaceParam)
static HD_API EdgeMap	ComputeAuthoredEdgeMap (HdMeshTopology const *topology, bool skipHoles=false)
static HD_API ReverseEdgeMap	ComputeReverseEdgeMap (const EdgeMap &edgeMap)
static HD_API std::pair< bool, GfVec2i >	GetVertexIndicesForEdge (const ReverseEdgeMap &rEdgeMap, int authoredEdgeId)
static HD_API std::pair< bool, int >	GetAuthoredEdgeID (HdMeshTopology const *topology, GfVec2i edge)

Detailed Description

A collection of utility algorithms for generating triangulation and quadrangulation of an input topology.

Definition at line 81 of file meshUtil.h.

Member Typedef Documentation

using HdMeshUtil::EdgeMap = std::unordered_map<GfVec2i, int, EdgeHash, EdgeEquality>

Definition at line 225 of file meshUtil.h.

using HdMeshUtil::ReverseEdgeMap = std::unordered_map<int, GfVec2i>

Definition at line 226 of file meshUtil.h.

Constructor & Destructor Documentation

HdMeshUtil::HdMeshUtil ( HdMeshTopology const *  topology, SdfPath const &  id  )

inline

Definition at line 84 of file meshUtil.h.

virtual HdMeshUtil::~HdMeshUtil ( )

inlinevirtual

Definition at line 86 of file meshUtil.h.

Member Function Documentation

static HD_API EdgeMap HdMeshUtil::ComputeAuthoredEdgeMap ( HdMeshTopology const *  topology, bool  skipHoles = false  )

static

static HD_API int HdMeshUtil::ComputeNumQuads ( VtIntArray const &  numVerts, VtIntArray const &  holeIndices, bool *  invalidFaceFound = NULL  )

static

Return the number of quadrangulated quads. If degenerated face is found, sets invalidFaceFound as true.

HD_API void HdMeshUtil::ComputeQuadIndices	(	VtVec4iArray *	indices,
		VtVec2iArray *	primitiveParams,
		VtVec4iArray *	quadsEdgeIndices = nullptr
	)

Return quadrangulated indices of the input topology. indices and primitiveParams are output parameters.

HD_API void HdMeshUtil::ComputeQuadInfo

(

HdQuadInfo *

quadInfo

)

Generate a quadInfo struct for the input topology.

HD_API bool HdMeshUtil::ComputeQuadrangulatedFaceVaryingPrimvar	(	void const *	source,
		int	numElements,
		HdType	dataType,
		VtValue *	quadrangulated
	)

Return a quadrangulation of a face-varying primvar. source is a buffer of size numElements and type corresponding to dataType (e.g. HdTypeFloatVec3); the result is a VtArray<T> of the correct type written to the variable "quadrangulated". This function returns false if it can't resolve dataType.

HD_API bool HdMeshUtil::ComputeQuadrangulatedPrimvar	(	HdQuadInfo const *	qi,
		void const *	source,
		int	numElements,
		HdType	dataType,
		VtValue *	quadrangulated
	)

Return a quadrangulation of a per-vertex primvar. source is a buffer of size numElements and type corresponding to dataType (e.g. HdTypeFloatVec3); the result is a VtArray<T> of the correct type written to the variable "quadrangulated". This function returns false if it can't resolve dataType.

static HD_API ReverseEdgeMap HdMeshUtil::ComputeReverseEdgeMap ( const EdgeMap &  edgeMap )

static

HD_API void HdMeshUtil::ComputeTriangleIndices	(	VtVec3iArray *	indices,
		VtIntArray *	primitiveParams,
		VtVec3iArray *	trianglesEdgeIndices = nullptr
	)

Return a triangulation of the input topology. indices and primitiveParams are output parameters.

HD_API bool HdMeshUtil::ComputeTriangulatedFaceVaryingPrimvar	(	void const *	source,
		int	numElements,
		HdType	dataType,
		VtValue *	triangulated
	)

Return a triangulation of a face-varying primvar. source is a buffer of size numElements and type corresponding to dataType (e.g. HdTypeFloatVec3); the result is a VtArray<T> of the correct type written to the variable "triangulated". This function returns false if it can't resolve dataType.

static int HdMeshUtil::DecodeEdgeFlagFromCoarseFaceParam ( int  coarseFaceParam )

inlinestatic

Definition at line 194 of file meshUtil.h.

static int HdMeshUtil::DecodeFaceIndexFromCoarseFaceParam ( int  coarseFaceParam )

inlinestatic

Definition at line 191 of file meshUtil.h.

static int HdMeshUtil::EncodeCoarseFaceParam ( int  faceIndex, int  edgeFlag  )

inlinestatic

Definition at line 188 of file meshUtil.h.

static HD_API std::pair<bool, int> HdMeshUtil::GetAuthoredEdgeID ( HdMeshTopology const *  topology, GfVec2i  edge  )

static

static HD_API std::pair<bool, GfVec2i> HdMeshUtil::GetVertexIndicesForEdge ( const ReverseEdgeMap &  rEdgeMap, int  authoredEdgeId  )

static

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

• pxr/imaging/hd/meshUtil.h