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Added ClearFaceFace method to avoid messed topology status

This commit is contained in:
Paolo Cignoni 2015-07-14 10:44:23 +00:00
parent 4b3b1da6b1
commit bc9c61a92e
1 changed files with 48 additions and 31 deletions
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79
vcg/complex/algorithms/update/topology.h
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@ -205,6 +205,24 @@ static void AllocateEdge(MeshType &m)
} }
/// \brief 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 ClearFaceFace(MeshType &m)
{
RequireFFAdjacency(m);
for(FaceIterator fi=m.face.begin();fi!=m.face.end();++fi)
{
if( ! (*fi).IsD() )
{
for(int j=0;j<fi->VN();++j)
{
fi->FFp(j)=0;
fi->FFi(j)=-1;
}
}
}
}
/// \brief Update the Face-Face topological relation by allowing to retrieve for each face what other faces shares their edges. /// \brief Update the Face-Face topological relation by allowing to retrieve for each face what other faces shares their edges.
static void FaceFace(MeshType &m) static void FaceFace(MeshType &m)
{ {
@ -339,38 +357,37 @@ In other words F1->FFp(i) == F2 iff F1 and F2 have the same tex coords along edg
static void FaceFaceFromTexCoord(MeshType &m) static void FaceFaceFromTexCoord(MeshType &m)
{ {
RequireFFAdjacency(m); RequireFFAdjacency(m);
RequirePerFaceWedgeTexCoord(m); RequirePerFaceWedgeTexCoord(m);
vcg::tri::UpdateTopology<MeshType>::FaceFace(m); vcg::tri::UpdateTopology<MeshType>::FaceFace(m);
for (FaceIterator fi = m.face.begin(); fi != m.face.end(); ++fi) for (FaceIterator fi = m.face.begin(); fi != m.face.end(); ++fi)
{ {
if (!(*fi).IsD()) if (!(*fi).IsD())
{ {
for (int i = 0; i < (*fi).VN(); i++) for (int i = 0; i < (*fi).VN(); i++)
{ {
bool isBorder = false; if (!vcg::face::IsBorder((*fi), i))
if (!vcg::face::IsBorder((*fi), i)) {
{ typename MeshType::FacePointer nextFace = (*fi).FFp(i);
typename MeshType::FacePointer nextFace = (*fi).FFp(i); int nextEdgeIndex = (*fi).FFi(i);
int nextEdgeIndex = (*fi).FFi(i); bool border = false;
bool border = false; if ((*fi).cV(i) == nextFace->cV(nextEdgeIndex))
if ((*fi).cV(i) == nextFace->cV(nextEdgeIndex)) {
{ if ((*fi).WT(i) != nextFace->WT(nextEdgeIndex) || (*fi).WT((*fi).Next(i)) != nextFace->WT(nextFace->Next(nextEdgeIndex)))
if ((*fi).WT(i) != nextFace->WT(nextEdgeIndex) || (*fi).WT((*fi).Next(i)) != nextFace->WT(nextFace->Next(nextEdgeIndex))) border = true;
border = true; }
} else
else {
{ if ((*fi).WT(i) != nextFace->WT(nextFace->Next(nextEdgeIndex)) || (*fi).WT((*fi).Next(i)) != nextFace->WT(nextEdgeIndex))
if ((*fi).WT(i) != nextFace->WT(nextFace->Next(nextEdgeIndex)) || (*fi).WT((*fi).Next(i)) != nextFace->WT(nextEdgeIndex)) border = true;
border = true; }
} if (border)
if (border) vcg::face::FFDetach((*fi), i);
vcg::face::FFDetach((*fi), i);
} }
} }
} }
} }
} }