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seed tetfuse + tetra3 utility functions

This commit is contained in:
T.Alderighi 2018-05-10 16:02:26 +02:00
parent 4881ea8148
commit 98b779db16
2 changed files with 64 additions and 0 deletions
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20
vcg/complex/algorithms/tetra/tetfuse_collapse.h Normal file
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@ -0,0 +1,20 @@
#ifndef VCG_TETFUSECOLLAPSE_H
#define VCG_TETFUSECOLLAPSE_H
namespace vcg {
namespace tetra {
template < class TetraMesh >
class TetFuser {
typedef typename TetraMesh::VertexType VertexType;
typedef typename TetraMesh::TetraType TetraType;
typedef typename TetraMesh::CoordType CoordType;
typedef typename TetraMesh::ScalarType ScalarType;
};
}
}
#endif

44
vcg/space/tetra3.h
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@ -319,6 +319,50 @@ static Point3<typename TetraType::ScalarType> Normal( const TetraType &t,const i
return(((t.cP(Tetra::VofF(face,1))-t.cP(Tetra::VofF(face,0)))^(t.cP(Tetra::VofF(face,2))-t.cP(Tetra::VofF(face,0)))).Normalize());
}
template < class TetraType >
static typename TetraType::ScalarType DihedralAngle (const TetraType & t, const size_t eidx)
{
typedef typename TetraType::CoordType CoordType;
//get two faces incident on eidx
int f0 = Tetra::FofE(eidx, 0);
int f1 = Tetra::FofE(eidx, 1);
CoordType p0 = t.P(Tetra::VofF(f0, 0));
CoordType p1 = t.P(Tetra::VofF(f0, 1));
CoordType p2 = t.P(Tetra::VofF(f0, 2));
CoordType n0 = ((p2 - p0) ^ (p1 - p0)).normalized();
p0 = t.P(Tetra::VofF(f1, 0));
p1 = t.P(Tetra::VofF(f1, 1));
p2 = t.P(Tetra::VofF(f1, 2));
CoordType n1 = ((p2 - p0) ^ (p1 - p0)).normalized();
return M_PI - double(acos(n0 * n1));
};
template < class TetraType >
static typename TetraType::ScalarType SolidAngle (const TetraType & t, const size_t vidx)
{
TetraType::ScalarType a0 = DihedralAngle(t, Tetra::EofV(vidx, 0));
TetraType::ScalarType a1 = DihedralAngle(t, Tetra::EofV(vidx, 1));
TetraType::ScalarType a2 = DihedralAngle(t, Tetra::EofV(vidx, 2));
return (a0 + a1 + a2) - M_PI;
};
template < class TetraType >
static typename TetraType::ScalarType AspectRatio (const TetraType & t)
{
TetraType::ScalarType a0 = SolidAngle(t, 0);
TetraType::ScalarType a1 = SolidAngle(t, 1);
TetraType::ScalarType a2 = SolidAngle(t, 2);
TetraType::ScalarType a3 = SolidAngle(t, 3);
return std::min(a0, std::min(a1, std::min(a2, a3)));
}
};
/**