Classes
struct	AdjacencyList

struct	Subset

struct	VertexElementInput

struct	VertexSplitter

struct	WeldList

struct	WeldListEntry

Public Member Functions
	MeshCompiler (const VertexDeclaration &_decl)

void	getIndexAdjBuffer_MT (void *_dst, const int _borderIndex=-1)
	Multi-threaded version of getIndexAdjBuffer. More...

void	dbgdump (const char *_filename) const
	dump mesh info to text file

void	dbgdumpObj (const char *_filename) const
	dump mesh in wavefront obj format

void	dbgdumpInputBin (const char *_filename, bool _seperateFiles=false) const
	dump input mesh to binary file format

void	dbgdumpInputObj (const char *_filename) const
	dump input mesh to wavefront obj format

void	dbgdumpAdjList (const char *_filename) const
	dump adjacency list to text file

bool	dbgVerify (const char *_filename) const
	test correctness of input <-> output id mappings, unshared per face vertex.. logs errors in file

std::string	vertexToString (const void *v) const
	interpret vertex data according declaration and write to string

size_t	getMemoryUsage (bool _printConsole=true) const

std::string	checkInputData () const
	check for errors in input data

Vertex Data Input
void	setVertices (size_t _num, const void *_data, size_t _stride=0, bool _internalCopy=false, GLuint _fmt=0, int _elementSize=-1)

void	setNormals (size_t _num, const void *_data, size_t _stride=0, bool _internalCopy=false, GLuint _fmt=0, int _elementSize=-1)

void	setTexCoords (size_t _num, const void *_data, size_t _stride=0, bool _internalCopy=false, GLuint _fmt=0, int _elementSize=-1)

void	setAttribVec (int _attrIdx, size_t _num, const void *_data, size_t _stride=0, bool _internalCopy=false, GLuint _fmt=0, int _elementSize=-1)

void	setAttrib (int _attrIdx, int _v, const void *_data)

int	getNumInputAttributes (int _attrIdx) const

Flexible Face Data Input
void	setFaceInput (MeshCompilerFaceInput *_faceInput)

Default Face Data Input
void	setNumFaces (const int _numFaces, const int _numIndices)
	Set number of faces and indices if known by user. More...

void	setIndexBufferInterleaved (int _numTris, int _indexSize, const void *_indices)
	Set index buffer for a triangle mesh. More...

void	setFaceVerts (int _i, int _v0, int _v1, int _v2)
	Set vertex ids per triangle. More...

void	setFaceVerts (int _i, int _faceSize, int *_v)
	Set vertex ids per face. More...

void	setFaceNormals (int _i, int _v0, int _v1, int _v2)
	Set normal ids per triangle. More...

void	setFaceNormals (int _i, int _faceSize, int *_v)
	Set normal ids per face. More...

void	setFaceTexCoords (int _i, int _v0, int _v1, int _v2)
	Set texcoord ids per triangle. More...

void	setFaceTexCoords (int _i, int _faceSize, int *_v)
	Set texcoord ids per face. More...

void	setFaceAttrib (int _i, int _v0, int _v1, int _v2, int _attrID)
	Set attribute ids per triangle. More...

void	setFaceAttrib (int _i, int _faceSize, int *_v, int _attrID)
	Set attribute ids per face. More...

Face Grouping and Subsets
void	setFaceGroup (int _i, short _groupID)
	Specify face groups. More...

int	findGroupSubset (int _groupID)
	get subset ID of a group More...

int	getFaceGroup (int _faceID) const
	Get Face Group of the given face. More...

int	getTriGroup (int _triID) const
	Get Group Id of the triangle. More...

int	getNumSubsets () const
	Get the number of subsets. More...

const Subset *	getSubset (int _i) const
	get a specific subset More...

Mesh Compilation
void	build (bool _weldVertices=false, bool _optimizeVCache=true, bool _needPerFaceAttribute=false, bool _keepIsolatedVertices=false)
	Build vertex + index buffer. More...

int	getNumVertices () const

void	setProvokingVertex (int _v)

int	getProvokingVertex () const

void	getVertexBuffer (void *_dst, const int _offset=0, const int _range=-1)
	Get vertex buffer ready for rendering. More...

const int *	getIndexBuffer () const

void	getIndexAdjBuffer (void *_dst, const int _borderIndex=-1)
	Get index buffer with adjacency information ready for rendering. More...

void	getIndexAdjBuffer_BruteForce (void *_dst, const int _borderIndex=-1)
	Slow brute-force version of getIndexAdjBuffer. More...

int	getNumTriangles () const

int	getNumFaces () const

int	getFaceSize (const int _i) const
	Get size of input face. More...

const VertexDeclaration *	getVertexDeclaration () const

void	getVertex (int _id, void *_out) const

int	getIndex (int _i) const

Input/Output ID mapping
int	mapToOriginalVertexID (const size_t _i, int &_faceID, int &_cornerID) const

int	mapToOriginalFaceID (const int _triID) const

const int *	mapToOriginalFaceIDPtr () const

int	mapToDrawVertexID (const int _faceID, const int _cornerID) const

int	mapToDrawTriID (const int _faceID, const int _k=0, int *_numTrisOut=0) const

Triangulation properties
bool	isTriangleMesh () const

bool	isFaceEdge (const int _triID, const int _edge) const

Private Member Functions
void	computeAdjacency (bool _forceRecompute=false)

void	splitVertices ()

void	getInputFaceVertex (const int _face, const int _corner, int *_out) const

void	getInputFaceVertex_Welded (const int _face, const int _corner, int *_out) const

void	getInputFaceVertexData (const int _face, const int _corner, void *_out) const

int	getInputIndex (const int &_face, const int &_corner, const int &_attrId) const

int	getAdjVertexFaceCount (int _vertexID) const

int	getAdjVertexFace (int _vertexID, int _k) const

int	getInputIndexSplit (const int _face, const int _corner) const

void	setInputIndexSplit (const int _face, const int _corner, const int _val)

int	mapTriToInputFace (const int _tri) const

int	getInputIndexOffset (const int _face, const int _corner) const

int	getInputFaceOffset (const int _face) const

void	prepareData ()
	build() preparation

void	findIsolatedVertices ()

void	forceUnsharedFaceVertex ()

void	weldVertices ()

void	fixWeldMap ()

void	triangulate ()

void	resolveTriangulation ()

void	sortFacesByGroup ()

void	optimize ()

void	createVertexMap (bool _keepIsolatedVerts)

void	createFaceMap ()

Private Attributes
VertexElementInput	input_ [16]

int	inputIDPos_

int	inputIDNorm_

int	inputIDTexC_

int	numAttributes_

VertexDeclaration	decl_

int	numFaces_

int	numIndices_

std::vector< int >	faceStart_

std::vector< int >	faceSize_

std::vector< int >	faceData_

size_t	maxFaceSize_

bool	constantFaceSize_

std::vector< short >	faceGroupIDs_

int	curFaceInputPos_

MeshCompilerFaceInput *	faceInput_

bool	deleteFaceInputeData_

std::vector< int >	faceBufSplit_

std::vector< int >	faceSortMap_

int	provokingVertex_

bool	provokingVertexSetByUser_

int	numTris_

std::vector< int >	triIndexBuffer_

std::vector< int >	isolatedVertices_

int	numSubsets_

std::vector< Subset >	subsets_

std::map< int, int >	subsetIDMap_

AdjacencyList	adjacencyVert_

MeshCompilerVertexCompare *	vertexCompare_

std::vector< int >	vertexWeldMapFace_

std::vector< int >	vertexWeldMapCorner_

VertexSplitter *	splitter_

std::vector< int >	triToSortFaceMap_
	maps from triangle ID to sorted face ID

std::vector< int >	triOptMap_
	maps from optimized tri ID to unoptimized tri ID

std::vector< int >	vertexMapFace_
	vertex index in vbo -> input (face id, corner id) pair , also inverse of faceBufSplit_

std::vector< int >	vertexMapCorner_

std::vector< int >	faceToTriMap_
	input face index -> output tri index

std::vector< int >	faceToTriMapOffset_

std::vector< int >	triToFaceMap_
	output tri index -> input face index

size_t	numDrawVerts_
	vertices in vbo

size_t	numIsolatedVerts_
	isolated vertices

std::vector< int >	indices_
	index buffer

Static Private Attributes
static MeshCompilerVertexCompare	defaultVertexCompare

Detailed Description

Definition at line 240 of file MeshCompiler.hh.

Member Function Documentation

◆ build()

void ACG::MeshCompiler::build	(	bool	_weldVertices = `false`,
		bool	_optimizeVCache = `true`,
		bool	_needPerFaceAttribute = `false`,
		bool	_keepIsolatedVertices = `false`
	)

Build vertex + index buffer.

Parameters

_weldVertices	Compare vertices and attempt to eliminate duplicates. High computation cost
_optimizeVCache	Reorder faces for optimized vcache usage. High computation cost
_needPerFaceAttribute	User wants to set per-face attributes in draw vertex buffer. Per-face data can be stored in the provoking vertex of each face. Low computation cost
_keepIsolatedVertices	Isolated vertices should not be discarded in the output vertex buffer

Definition at line 1699 of file MeshCompiler.cc.

◆ findGroupSubset()

int ACG::MeshCompiler::findGroupSubset ( int _groupID )

get subset ID of a group

Parameters

_groupID Id of the group

Returns: Subset Id

Definition at line 1942 of file MeshCompiler.cc.

◆ getFaceGroup()

int ACG::MeshCompiler::getFaceGroup ( int _faceID ) const

Get Face Group of the given face.

Parameters

_faceID Id of the face

Returns: Group Id

Definition at line 1934 of file MeshCompiler.cc.

◆ getFaceSize()

int ACG::MeshCompiler::getFaceSize ( const int _i ) const

inline

Get size of input face.

Parameters

_i Index

Returns: Size

Definition at line 598 of file MeshCompiler.hh.

◆ getIndex()

int ACG::MeshCompiler::getIndex ( int _i ) const

Get index in final draw index buffer.

Definition at line 3035 of file MeshCompiler.cc.

◆ getIndexAdjBuffer()

void ACG::MeshCompiler::getIndexAdjBuffer	(	void *	_dst,
		const int	_borderIndex = `-1`
	)

Get index buffer with adjacency information ready for rendering.

This index buffer can be used to render in GL_TRIANGLES_ADJACENCY mode. For each triangle, it contains the 3 neighboring triangles with a shared edge in addition to the triangle vertices. Each triangle stores 6 indices: 0 - first vertex of triangle 1 - opposite vertex to first edge of adjacent triangle 2 - second vertex of triangle 3 - opposite vertex to second edge of adjacent triangle 4 - third vertex of triangle 5 - opposite vertex to third edge of adjacent triangle

5___4___3 \ /\ / \/__\/ 0\ /2 \/ 1

Parameters

_dst	[out] Pointer to memory address where the 32bit index buffer should be copied to. Must have size of at least 6 * numTris * 4 bytes
_borderIndex	index to use for border edges (missing adjacent triangles)

Definition at line 3269 of file MeshCompiler.cc.

◆ getIndexAdjBuffer_BruteForce()

void ACG::MeshCompiler::getIndexAdjBuffer_BruteForce	(	void *	_dst,
		const int	_borderIndex = `-1`
	)

Slow brute-force version of getIndexAdjBuffer.

Computes index buffer with adjacency information, but uses a much simpler algorithm. Runtime = O(n^2), but this can be used to verify the result of getIndexAdjBuffer. Results from brute-force and optimized algorithm must be equal for meshes where no edge is shared by more than two triangles.

Parameters

_dst	[out] Pointer to memory address where the 32bit index buffer should be copied to. Must have size of at least 6 * numTris * 4 bytes
_borderIndex	index to use for border edges (missing adjacent triangles)

Definition at line 3590 of file MeshCompiler.cc.

◆ getIndexAdjBuffer_MT()

void ACG::MeshCompiler::getIndexAdjBuffer_MT	(	void *	_dst,
		const int	_borderIndex = `-1`
	)

Multi-threaded version of getIndexAdjBuffer.

Uses a multi-threaded method based on the vertex-triangle adjacency list to compute the index buffer with adjacency.

Parameters

_dst	[out] Pointer to memory address where the 32bit index buffer should be copied to. Must have size of at least 6 * numTris * 4 bytes
_borderIndex	index to use for border edges (missing adjacent triangles)

Definition at line 3454 of file MeshCompiler.cc.

◆ getIndexBuffer()

const int* ACG::MeshCompiler::getIndexBuffer ( ) const

inline

Get index buffer ready for rendering.

Definition at line 545 of file MeshCompiler.hh.

◆ getInputFaceVertex()

void ACG::MeshCompiler::getInputFaceVertex	(	const int	_face,
		const int	_corner,
		int *	_out
	)		const

private

i: face index j: corner index _out: output vertex (index for each attribute)

Definition at line 1068 of file MeshCompiler.cc.

◆ getInputFaceVertex_Welded()

void ACG::MeshCompiler::getInputFaceVertex_Welded	(	const int	_face,
		const int	_corner,
		int *	_out
	)		const

private

i: face index j: corner index _out: output vertex (index for each attribute) post welding operation

Definition at line 1074 of file MeshCompiler.cc.

◆ getInputFaceVertexData()

void ACG::MeshCompiler::getInputFaceVertexData	(	const int	_face,
		const int	_corner,
		void *	_out
	)		const

private

i: face index j: corner index _out: output vertex address (vertex data)

Definition at line 1092 of file MeshCompiler.cc.

◆ getMemoryUsage()

size_t ACG::MeshCompiler::getMemoryUsage ( bool _printConsole = true ) const

return memory consumption in bytes

Parameters

_printConsole print detailed memory costs to command console

Definition at line 3729 of file MeshCompiler.cc.

◆ getNumFaces()

int ACG::MeshCompiler::getNumFaces ( ) const

Get number of input faces.

Definition at line 4016 of file MeshCompiler.cc.

◆ getNumInputAttributes()

int ACG::MeshCompiler::getNumInputAttributes ( int _attrIdx ) const

Get number of attributes in an input buffer

Parameters

_attrIdx Attribute id from VertexDeclaration

Definition at line 1909 of file MeshCompiler.cc.

◆ getNumSubsets()

int ACG::MeshCompiler::getNumSubsets ( ) const

inline

Get the number of subsets.

Returns: Number of subsets

Definition at line 483 of file MeshCompiler.hh.

◆ getNumTriangles()

int ACG::MeshCompiler::getNumTriangles ( ) const

inline

Get number of triangles in final buffer.

Definition at line 587 of file MeshCompiler.hh.

◆ getNumVertices()

int ACG::MeshCompiler::getNumVertices ( ) const

inline

Get number of vertices in final buffer.

Definition at line 512 of file MeshCompiler.hh.

◆ getProvokingVertex()

int ACG::MeshCompiler::getProvokingVertex ( ) const

inline

See glProvokingVertex()

Returns: provoking vertex id

Definition at line 530 of file MeshCompiler.hh.

◆ getSubset()

const MeshCompiler::Subset * ACG::MeshCompiler::getSubset ( int _i ) const

get a specific subset

Parameters

_i	Id of the subset

Returns: The subset

Definition at line 1947 of file MeshCompiler.cc.

◆ getTriGroup()

int ACG::MeshCompiler::getTriGroup ( int _triID ) const

Get Group Id of the triangle.

Parameters

_triID Id of the triangle

Returns: Group of the triangle

◆ getVertex()

void ACG::MeshCompiler::getVertex	(	int	_id,
		void *	_out
	)		const

Get vertex in final draw vertex buffer.

Definition at line 3006 of file MeshCompiler.cc.

◆ getVertexBuffer()

void ACG::MeshCompiler::getVertexBuffer	(	void *	_dst,
		const int	_offset = `0`,
		const int	_range = `-1`
	)

Get vertex buffer ready for rendering.

Query final vertex buffer data. Support vertex buffer batch uploads.

Parameters

_dst	[out] Pointer to memory address where the vertex buffer should be copied to
_offset	Begin of vertex buffer batch
_range	Size of vertex buffer batch. Copies rest of buffer if _range < 0.

Definition at line 3207 of file MeshCompiler.cc.

◆ getVertexDeclaration()

const VertexDeclaration* ACG::MeshCompiler::getVertexDeclaration ( ) const

inline

Get Vertex declaration.

Definition at line 605 of file MeshCompiler.hh.

◆ isFaceEdge()

bool ACG::MeshCompiler::isFaceEdge	(	const int	_triID,
		const int	_edge
	)		const

Test if a triangle edge is a face edge from the input buffer.

When a convex n-poly is subdivided into (n-2) triangles, new edges are created which do not exist in the input mesh. This function identifies if an edge was already existant in the input mesh or added during triangulation.

Parameters

_triID	triangle ID in draw buffer
_edge	edge of triangle, edge ordering: v0-v1, v1-v2, v2-v0

Returns: true if the edge is an edge from an input face, false otherwise

Definition at line 4042 of file MeshCompiler.cc.

◆ isTriangleMesh()

bool ACG::MeshCompiler::isTriangleMesh ( ) const

Test if the input mesh consists of triangles only.

Definition at line 4037 of file MeshCompiler.cc.

◆ mapToDrawTriID()

int ACG::MeshCompiler::mapToDrawTriID	(	const int	_faceID,
		const int	_k = `0`,
		int *	_numTrisOut = `0`
	)		const

Mapping from input Face id -> draw triangle id

Parameters

_faceID	Face ID in input data
_k	triangle no. associated to face, offset 0
_numTrisOut	[out] Number of triangles associated to face (if input face was n-poly)

Returns: Draw Triangle ID in output vertex buffer

Definition at line 3716 of file MeshCompiler.cc.

◆ mapToDrawVertexID()

int ACG::MeshCompiler::mapToDrawVertexID	(	const int	_faceID,
		const int	_cornerID
	)		const

Mapping from input vertex id -> draw vertex id

Parameters

_faceID	Face ID in input data
_cornerID	Corner of face

Returns: Draw Vertex ID in output vertex buffer

Definition at line 3711 of file MeshCompiler.cc.

◆ mapToOriginalFaceID()

int ACG::MeshCompiler::mapToOriginalFaceID ( const int _triID ) const

Mapping from draw tri id -> input face id

Parameters

_triID Triangle ID in draw index buffer

Returns: Input Face ID

Definition at line 3660 of file MeshCompiler.cc.

◆ mapToOriginalFaceIDPtr()

const int * ACG::MeshCompiler::mapToOriginalFaceIDPtr ( ) const

Get pointer to the lookup table mapping from tri id -> input face id

Returns: ptr to address of lookup table with size getNumTriangles()

Definition at line 3677 of file MeshCompiler.cc.

◆ mapToOriginalVertexID()

int ACG::MeshCompiler::mapToOriginalVertexID	(	const size_t	_i,
		int &	_faceID,
		int &	_cornerID
	)		const

Mapping from draw vertex id -> input vertex id

Parameters

_i	Vertex ID in draw buffer
_faceID	[out] Face ID in face input buffer
_cornerID	[out] Corner of face corresponding to vertex.

Returns: Position ID in input buffer

Definition at line 3687 of file MeshCompiler.cc.

◆ setAttrib()

void ACG::MeshCompiler::setAttrib	(	int	_attrIdx,
		int	_v,
		const void *	_data
	)

Set single custom input attributes.

An internal buffer for the requested attribute must be allocated before using this function. See setAttribVec()

Parameters

_attrIdx	Attribute id from VertexDeclaration
_v	Buffer id of the single attribute
_data	attribute data

Definition at line 1894 of file MeshCompiler.cc.

◆ setAttribVec()

void ACG::MeshCompiler::setAttribVec	(	int	_attrIdx,
		size_t	_num,
		const void *	_data,
		size_t	_stride = `0`,
		bool	_internalCopy = `false`,
		GLuint	_fmt = `0`,
		int	_elementSize = `-1`
	)

Set custom input attribute.

Alternatively allocates an internal buffer only, such that data can be provided via setAttrib().

Parameters

_attrIdx	Attribute id from VertexDeclaration
_num	Number of attributes
_data	Input data buffer, may be null to only allocate an internal buffer
_stride	Offset difference in bytes to the next attribute in _data. Default value 0 indicates no data alignment/memory packing.
_internalCopy	Create an internal buffer and make a copy _data
_fmt	data format of one element (must be set if input data does not match vertex declaration)
_elementSize	number of elements per attribute (i.e. 3 for vec3 .., -1 if unknown)

Definition at line 269 of file MeshCompiler.cc.

◆ setFaceAttrib() [1/2]

void ACG::MeshCompiler::setFaceAttrib	(	int	_i,
		int	_v0,
		int	_v1,
		int	_v2,
		int	_attrID
	)

Set attribute ids per triangle.

Parameters

_i	Face id
_v0	1st element id
_v1	2nd element id
_v2	3rd element id
_attrID	Which attribute: index of VertexDeclaration element array

Definition at line 1231 of file MeshCompiler.cc.

◆ setFaceAttrib() [2/2]

void ACG::MeshCompiler::setFaceAttrib	(	int	_i,
		int	_faceSize,
		int *	_v,
		int	_attrID
	)

Set attribute ids per face.

Parameters

_i	Face id
_faceSize	Size of face, ie. number of vertices of face
_v	Element ids
_attrID	Which attribute: index of VertexDeclaration element array

Definition at line 1217 of file MeshCompiler.cc.

◆ setFaceGroup()

void ACG::MeshCompiler::setFaceGroup	(	int	_i,
		short	_groupID
	)

Specify face groups.

Faces with the same group ID will be chunked together in the sorting process. This feature may be used for material/texture subsets.

Parameters

_i	Face ID
_groupID	Custom group ID

Definition at line 3199 of file MeshCompiler.cc.

◆ setFaceInput()

void ACG::MeshCompiler::setFaceInput ( MeshCompilerFaceInput * _faceInput )

Set Face data input

Making use of the MeshCompilerFaceInput interface completly overrides the default input behavior. Any subsequent call to default input data functions such as setNumFaces(), setFaceVerts() etc. will be ignored

Parameters

_faceInput user defined face input (no internal copy made, do not delete while using MeshCompiler)

Definition at line 3982 of file MeshCompiler.cc.

◆ setFaceNormals() [1/2]

void ACG::MeshCompiler::setFaceNormals	(	int	_i,
		int	_v0,
		int	_v1,
		int	_v2
	)

Set normal ids per triangle.

Parameters

_i	Face ID
_v0	1st normal id
_v1	2nd normal id
_v2	3rd normal id

Definition at line 2988 of file MeshCompiler.cc.

◆ setFaceNormals() [2/2]

void ACG::MeshCompiler::setFaceNormals	(	int	_i,
		int	_faceSize,
		int *	_v
	)

Set normal ids per face.

Parameters

_i	Face id
_faceSize	Size of face, ie. number of vertices of face
_v	Normal ids

Definition at line 2983 of file MeshCompiler.cc.

◆ setFaceTexCoords() [1/2]

void ACG::MeshCompiler::setFaceTexCoords	(	int	_i,
		int	_v0,
		int	_v1,
		int	_v2
	)

Set texcoord ids per triangle.

Parameters

_i	Face ID
_v0	1st texcoord id
_v1	2nd texcoord id
_v2	3rd texcoord id

Definition at line 3000 of file MeshCompiler.cc.

◆ setFaceTexCoords() [2/2]

void ACG::MeshCompiler::setFaceTexCoords	(	int	_i,
		int	_faceSize,
		int *	_v
	)

Set texcoord ids per face.

Parameters

_i	Face id
_faceSize	Size of face, ie. number of vertices of face
_v	Texcoord ids

Definition at line 2995 of file MeshCompiler.cc.

◆ setFaceVerts() [1/2]

void ACG::MeshCompiler::setFaceVerts	(	int	_i,
		int	_v0,
		int	_v1,
		int	_v2
	)

Set vertex ids per triangle.

Parameters

_i	Face ID
_v0	1st vertex id
_v1	2nd vertex id
_v2	3rd vertex id

Definition at line 2977 of file MeshCompiler.cc.

◆ setFaceVerts() [2/2]

void ACG::MeshCompiler::setFaceVerts	(	int	_i,
		int	_faceSize,
		int *	_v
	)

Set vertex ids per face.

Parameters

_i	Face id
_faceSize	Size of face, ie. number of vertices of face
_v	Vertex ids

Definition at line 2972 of file MeshCompiler.cc.

◆ setIndexBufferInterleaved()

void ACG::MeshCompiler::setIndexBufferInterleaved	(	int	_numTris,
		int	_indexSize,
		const void *	_indices
	)

Set index buffer for a triangle mesh.

This should only be used if the input vertex buffer is interleaved already.

Parameters

_numTris	Number of triangles.
_indexSize	Size in bytes of one index.
_indices	Pointer to a buffer containing the index data.

Definition at line 3987 of file MeshCompiler.cc.

◆ setNormals()

void ACG::MeshCompiler::setNormals	(	size_t	_num,
		const void *	_data,
		size_t	_stride = `0`,
		bool	_internalCopy = `false`,
		GLuint	_fmt = `0`,
		int	_elementSize = `-1`
	)

set input normals

Parameters

_num	Number of normals
_data	Pointer to normals data
_stride	Difference in bytes between two normals positions in _data. Default value 0 indicates a tight float3 position array without any other data or memory alignment.
_internalCopy	Memory optimization flag: select true if the provided data address is only temporarily valid. Otherwise an internal copy must be made.
_fmt	data format of one element (must be set if input data does not match vertex declaration)
_elementSize	number of elements per attribute (i.e. 3 for vec3 .., -1 if unknown)

Definition at line 258 of file MeshCompiler.cc.

◆ setNumFaces()

void ACG::MeshCompiler::setNumFaces	(	const int	_numFaces,
		const int	_numIndices
	)

Set number of faces and indices if known by user.

User may give a rough estimate of face/index count. A more accurate estimation improves efficiency: too low numbers result in performance hit, too high numbers in memory consumption

Parameters

_numFaces	Number of faces. Value 0 accepted at cost of performance
_numIndices	Number of indices, i.e. 3 * numFaces for triangle meshes. Value 0 accepted at cost of performance

Definition at line 1202 of file MeshCompiler.cc.

◆ setProvokingVertex()

void ACG::MeshCompiler::setProvokingVertex ( int _v )

See glProvokingVertex()

Specifiy the vertex to be used as the source of data for flat shading. The default value is 2, meaning that the last vertex of each triangle will be used. setProvokingVertex() must be called prior to build(), if a different provoking vertex is desired. Additionally build() has to set its _needPerFaceAttribute parameter to true to enable provoking vertices. The provoking vertex of a face is a vertex, which is not shared with any other face in the mesh.

Parameters

_v	triangle vertex where the provoking vertex should be stored [0, 1, 2]

Definition at line 4021 of file MeshCompiler.cc.

◆ setTexCoords()

void ACG::MeshCompiler::setTexCoords	(	size_t	_num,
		const void *	_data,
		size_t	_stride = `0`,
		bool	_internalCopy = `false`,
		GLuint	_fmt = `0`,
		int	_elementSize = `-1`
	)

set input texture coords

Parameters

_num	Number of texture coords
_data	Pointer to texture coord data
_stride	Difference in bytes between two texture coordinate positions in _data. Default value 0 indicates a tight float3 position array without any other data or memory alignment.
_internalCopy	Memory optimization flag: select true if the provided data address is only temporarily valid. Otherwise an internal copy must be made.
_fmt	data format of one element (must be set if input data does not match vertex declaration)
_elementSize	number of elements per attribute (i.e. 3 for vec3 .., -1 if unknown)

Definition at line 263 of file MeshCompiler.cc.

◆ setVertices()

void ACG::MeshCompiler::setVertices	(	size_t	_num,
		const void *	_data,
		size_t	_stride = `0`,
		bool	_internalCopy = `false`,
		GLuint	_fmt = `0`,
		int	_elementSize = `-1`
	)

set input vertex positions

Parameters

_num	Number of vertex positions
_data	Pointer to vertex data
_stride	Difference in bytes between two vertex positions in _data. Default value 0 indicates a tight float3 position array without any other data or memory alignment.
_internalCopy	Memory optimization flag: select true if the provided data address is only temporarily valid. Otherwise an internal copy must be made.
_fmt	data format of one element (must be set if input data does not match vertex declaration)
_elementSize	number of elements per attribute (i.e. 3 for vec3 .., -1 if unknown)

Definition at line 253 of file MeshCompiler.cc.

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

OpenFlipper/libs_required/ACG/GL/MeshCompiler.hh
OpenFlipper/libs_required/ACG/GL/MeshCompiler.cc

Classes

Public Member Functions

Private Member Functions

Private Attributes

vertices in vbo

isolated vertices

Static Private Attributes

Detailed Description

Member Function Documentation

◆ build()

◆ findGroupSubset()

◆ getFaceGroup()

◆ getFaceSize()

◆ getIndex()

◆ getIndexAdjBuffer()

◆ getIndexAdjBuffer_BruteForce()

◆ getIndexAdjBuffer_MT()

◆ getIndexBuffer()

◆ getInputFaceVertex()

◆ getInputFaceVertex_Welded()

◆ getInputFaceVertexData()

◆ getMemoryUsage()

◆ getNumFaces()

◆ getNumInputAttributes()

◆ getNumSubsets()

◆ getNumTriangles()

◆ getNumVertices()

◆ getProvokingVertex()

◆ getSubset()

◆ getTriGroup()

◆ getVertex()

◆ getVertexBuffer()

◆ getVertexDeclaration()

◆ isFaceEdge()

◆ isTriangleMesh()

◆ mapToDrawTriID()

◆ mapToDrawVertexID()

◆ mapToOriginalFaceID()

◆ mapToOriginalFaceIDPtr()

◆ mapToOriginalVertexID()

◆ setAttrib()

◆ setAttribVec()

◆ setFaceAttrib() [1/2]

◆ setFaceAttrib() [2/2]

◆ setFaceGroup()

◆ setFaceInput()

◆ setFaceNormals() [1/2]

◆ setFaceNormals() [2/2]

◆ setFaceTexCoords() [1/2]

◆ setFaceTexCoords() [2/2]

◆ setFaceVerts() [1/2]

◆ setFaceVerts() [2/2]

◆ setIndexBufferInterleaved()

◆ setNormals()

◆ setNumFaces()

◆ setProvokingVertex()

◆ setTexCoords()

◆ setVertices()