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added facenormal smoothing

This commit is contained in:
Paolo Cignoni 2008-04-18 17:48:29 +00:00
parent 820bfdd65e
commit aea7147a64
1 changed files with 69 additions and 0 deletions
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69
vcg/complex/trimesh/smooth.h
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@ -23,6 +23,9 @@
/****************************************************************************
History
$Log: not supported by cvs2svn $
Revision 1.16 2008/02/07 10:24:51 cignoni
added a missing IsD() check
Revision 1.15 2007/11/05 23:47:20 cignoni
added selection to the pasodoble smoothing
@ -666,6 +669,70 @@ void NormalSmoothSB(MESH_TYPE &m,
}
}
// Replace the normal of the face with the average of normals of the vertex adijacent faces.
// Normals are weighted with face area.
// It assumes that:
// Normals are normalized:
// VF adjacency is present.
template<class MESH_TYPE>
void FaceNormalSmooth(MESH_TYPE &m)
{
SimpleTempData<typename MESH_TYPE::FaceContainer, PDFaceInfo< typename MESH_TYPE::ScalarType > > TDF(m.face);
PDFaceInfo<typename MESH_TYPE::ScalarType> lpzf;
lpzf.m=typename MESH_TYPE::CoordType(0,0,0);
assert(tri::HasVFAdjacency(m));
TDF.Start(lpzf);
int i;
typedef typename MESH_TYPE::CoordType CoordType;
typedef typename MESH_TYPE::ScalarType ScalarType;
typedef typename vcg::face::VFIterator<typename MESH_TYPE::FaceType> VFLocalIterator;
typename MESH_TYPE::FaceIterator fi;
tri::UpdateNormals<MESH_TYPE>::AreaNormalizeFace(m);
for(fi=m.face.begin();fi!=m.face.end();++fi) if(!(*fi).IsD())
{
CoordType bc=Barycenter<typename MESH_TYPE::FaceType>(*fi);
// 1) Clear all the visited flag of faces that are vertex-adjacent to fi
for(i=0;i<3;++i)
{
VFLocalIterator ep(&*fi,i);
for (;!ep.End();++ep)
ep.f->ClearV();
}
// 2) Effectively average the normals
CoordType normalSum=(*fi).N();
for(i=0;i<3;++i)
{
VFLocalIterator ep(&*fi,i);
for (;!ep.End();++ep)
{
if(! (*ep.f).IsV() )
{
normalSum += ep.f->N();
(*ep.f).SetV();
}
}
}
normalSum.Normalize();
TDF[*fi].m=normalSum;
}
for(fi=m.face.begin();fi!=m.face.end();++fi)
(*fi).N()=TDF[*fi].m;
tri::UpdateNormals<MESH_TYPE>::NormalizeFace(m);
TDF.Stop();
}
/***************************************************************************/
// Paso Doble Step 1 compute the smoothed normals
/***************************************************************************/
@ -675,6 +742,8 @@ void NormalSmoothSB(MESH_TYPE &m,
//
// This is the Normal Smoothing approach bsased on a angle thresholded weighting
// sigma is in the 0 .. 1 range, it represent the cosine of a threshold angle.
// sigma == 0 All the normals are averaged
// sigma == 1 Nothing is averaged.
// Only within the specified range are averaged toghether. The averagin is weighted with the
template<class MESH_TYPE>