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Added RemoveDegenerateFace and added its automatic invocation at the end of RemoveDuplicateVertex

This commit is contained in:
Paolo Cignoni 2006-01-11 15:40:14 +00:00
parent efa1e436aa
commit 35b967720e
1 changed files with 36 additions and 2 deletions
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38
vcg/complex/trimesh/clean.h
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@ -24,6 +24,9 @@
History History
$Log: not supported by cvs2svn $ $Log: not supported by cvs2svn $
Revision 1.28 2006/01/02 09:49:36 cignoni
Added some missing std::
Revision 1.27 2005/12/29 12:27:37 cignoni Revision 1.27 2005/12/29 12:27:37 cignoni
Splitted IsComplexManifold in IsTwoManifoldFace and IsTwoManifoldVertex Splitted IsComplexManifold in IsTwoManifoldFace and IsTwoManifoldVertex
@ -176,7 +179,7 @@ namespace vcg {
Note that it does not update any topology relation that could be affected by this like the VT or TT relation. Note that it does not update any topology relation that could be affected by this like the VT or TT relation.
the reason this function is usually performed BEFORE building any topology information. the reason this function is usually performed BEFORE building any topology information.
*/ */
static int RemoveDuplicateVertex( MeshType & m ) // V1.0 static int RemoveDuplicateVertex( MeshType & m, bool RemoveDegenerateFlag=true) // V1.0
{ {
if(m.vert.size()==0 || m.vn==0) return 0; if(m.vert.size()==0 || m.vn==0) return 0;
@ -226,7 +229,9 @@ namespace vcg {
} }
m.vn -= deleted; m.vn -= deleted;
return deleted; return deleted;
}
if(RemoveDegenerateFlag) RemoveDegenerateFace(m);
}
/** This function removes that are not referenced by any face. The function updates the vn counter. /** This function removes that are not referenced by any face. The function updates the vn counter.
@ -264,6 +269,35 @@ namespace vcg {
return deleted; return deleted;
} }
/*
Degenerate faces are faces that are Topologically degenerate,
i.e. have two or more vertex reference that link the same vertex
(and not only two vertexes with the same coordinates).
All Degenerate faces are zero area faces BUT not all zero area faces are degenerate.
*/
static int RemoveDegenerateFace(MeshType& m)
{
FaceIterator fi;
int count_fd = 0;
for(fi=m.face.begin(); fi!=m.face.end();++fi)
if((*fi).V(0) == (*fi).V(1) ||
(*fi).V(0) == (*fi).V(2) ||
(*fi).V(1) == (*fi).V(2) )
{
count_fd++;
fi->SetD();
m.fn--;
}
return count_fd;
}
/*
This function remove faces that are geometrically degenerate
but that could be topologically correct.
*/
static int RemoveZeroAreaFace(MeshType& m, ScalarType epsilon=0) static int RemoveZeroAreaFace(MeshType& m, ScalarType epsilon=0)
{ {
FaceIterator fi; FaceIterator fi;