vcg::tri::UpdateTopology< UpdateMeshType > Class Template Reference

Generation of per-vertex and per-face topological information. More...

#include <vcg/complex/algorithms/update/topology.h>

Classes
class	PEdge
	Auxiliary data structure for computing face face adjacency information. More...
class	PEdgeTex
	Auxiliairy data structure for computing face face adjacency information. More...
class	PFace
	Auxiliary data structure for computing tetra tetra adjacency information. More...
class	PVertexEdge

Public Types
typedef UpdateMeshType	MeshType
typedef MeshType::ScalarType	ScalarType
typedef MeshType::VertexType	VertexType
typedef MeshType::VertexPointer	VertexPointer
typedef MeshType::VertexIterator	VertexIterator
typedef MeshType::EdgeType	EdgeType
typedef MeshType::EdgePointer	EdgePointer
typedef MeshType::EdgeIterator	EdgeIterator
typedef MeshType::FaceType	FaceType
typedef MeshType::FacePointer	FacePointer
typedef MeshType::FaceIterator	FaceIterator
typedef MeshType::TetraType	TetraType
typedef MeshType::TetraPointer	TetraPointer
typedef MeshType::TetraIterator	TetraIterator

Static Public Member Functions
static void	FillFaceVector (MeshType &m, std::vector< PFace > &fvec)
static void	FillUniqueFaceVector (MeshType &m, std::vector< PFace > &fvec)
static void	FillEdgeVector (MeshType &m, std::vector< PEdge > &edgeVec, bool includeFauxEdge=true)
static void	FillUniqueEdgeVector (MeshType &m, std::vector< PEdge > &edgeVec, bool includeFauxEdge=true, bool computeBorderFlag=false)
static void	FillSelectedFaceEdgeVector (MeshType &m, std::vector< PEdge > &edgeVec)
static void	AllocateEdge (MeshType &m)
	Initialize the edge vector all the edges that can be inferred from current face vector, setting up all the current adjacency relations.
static void	ClearTetraTetra (MeshType &m)
	Clear the tetra-tetra topological relation, setting each involved pointer to null. useful when you passed a mesh with tt adjacency to an algorithm that does not use it and chould have messed it.
static void	TetraTetra (MeshType &m)
	Updates the Tetra-Tetra topological relation by allowing to retrieve for each tetra what other tetras share their faces.
static void	ClearFaceFace (MeshType &m)
	Clear the Face-Face topological relation setting each involved pointer to null. useful when you passed a mesh with ff adjacency to an algorithm that does not use it and could have messed it.
static void	FaceFace (MeshType &m)
	Update the Face-Face topological relation by allowing to retrieve for each face what other faces shares their edges.
static void	VertexTetra (MeshType &m)
	Update the vertex-tetra topological relation.
static void	VertexFace (MeshType &m)
	Update the Vertex-Face topological relation.
static bool	IsTexCoordSeam (const FaceType &f, int i)
	Tell whether the faces joined by FF along edge i of f disagree on the per-wedge texture coordinates of the edge's two ends, that is whether a texture seam runs along it.
static void	FaceFaceFromTexCoord (MeshType &m)
	Update the Face-Face topological relation so that it reflects the per-wedge texture connectivity.
static void	TestVertexEdge (MeshType &m)
	Test correctness of VEtopology.
static void	TestVertexFace (MeshType &m)
	Test correctness of VFtopology.
static void	TestFaceFace (MeshType &m)
	Test correctness of FFtopology (only for 2Manifold Meshes!)
static void	EdgeEdge (MeshType &m)
static void	VertexEdge (MeshType &m)

Detailed Description

template<class UpdateMeshType>
class vcg::tri::UpdateTopology< UpdateMeshType >

Generation of per-vertex and per-face topological information.

Member Function Documentation

AllocateEdge()

template<class UpdateMeshType >

static void vcg::tri::UpdateTopology< UpdateMeshType >::AllocateEdge ( MeshType &  m )

inlinestatic

Initialize the edge vector all the edges that can be inferred from current face vector, setting up all the current adjacency relations.

FaceFaceFromTexCoord()

template<class UpdateMeshType >

static void vcg::tri::UpdateTopology< UpdateMeshType >::FaceFaceFromTexCoord ( MeshType &  m )

inlinestatic

Update the Face-Face topological relation so that it reflects the per-wedge texture connectivity.

Using this function two faces are adjacent along the FF relation IFF the two faces have matching texture coords along the involved edge. In other words F1->FFp(i) == F2 iff F1 and F2 have the same tex coords along edge i

FillEdgeVector()

template<class UpdateMeshType >

static void vcg::tri::UpdateTopology< UpdateMeshType >::FillEdgeVector ( MeshType &  m, std::vector< PEdge > &  edgeVec, bool  includeFauxEdge = true  )

inlinestatic

Fill a vector with all the edges of the mesh. each edge is stored in the vector the number of times that it appears in the mesh, with the referring face. optionally it can skip the faux edges (to retrieve only the real edges of a triangulated polygonal mesh)

IsTexCoordSeam()

template<class UpdateMeshType >

static bool vcg::tri::UpdateTopology< UpdateMeshType >::IsTexCoordSeam ( const FaceType &  f, int  i  )

inlinestatic

Tell whether the faces joined by FF along edge i of f disagree on the per-wedge texture coordinates of the edge's two ends, that is whether a texture seam runs along it.

Edge i of f must not be a border. A texture seam is an edge that is shared in 3D (the two faces use the same vertices) and cut in UV (they place those vertices at different texture coordinates).

VertexFace()

template<class UpdateMeshType >

static void vcg::tri::UpdateTopology< UpdateMeshType >::VertexFace ( MeshType &  m )

inlinestatic

Update the Vertex-Face topological relation.

The function allows to retrieve for each vertex the list of faces sharing this vertex. After this call all the VF component are initialized. Isolated vertices have a null list of faces.

See also

vcg::vertex::VFAdj

vcg::face::VFAdj

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

• vcg/complex/algorithms/update/topology.h