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added a missing PerFaceFromCurrentVertexNormal mode

This commit is contained in:
Paolo Cignoni 2008-12-18 00:27:47 +00:00
parent 7548c5e2ac
commit c2c940338e
1 changed files with 17 additions and 2 deletions
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19
vcg/complex/trimesh/update/normal.h
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@ -162,8 +162,23 @@ static void PerVertexFromCurrentFaceNormal(ComputeMeshType &m)
(*fi).V(j)->N() += (*fi).cN();
}
}
/// \brief Calculates the vertex normal. Exploiting or current face normals.
/**
The normal of a face f is the average of the normals of the vertices of f.
*/
static void PerFaceFromCurrentVertexNormal(ComputeMeshType &m)
{
for (FaceIterator fi=m.face.begin(); fi!=m.face.end(); ++fi)
if( !(*fi).IsD())
{
NormalType n;
n.SetZero();
for(int j=0; j<3; ++j)
n += fi->V(j)->cN();
n.Normalize();
fi->N() = n;
}
}
/// \brief Calculates the vertex normal. Without exploiting or touching face normals.
/**
The normal of a vertex v is the weigthed average of the normals of the faces incident on v.