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added Coord3DtoUV function

This commit is contained in:
Nico Pietroni 2011-10-05 16:33:22 +00:00
parent a7c702c81d
commit f4a0b8bce4
1 changed files with 21 additions and 0 deletions
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21
vcg/complex/algorithms/parametrization/uv_utils.h
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@ -27,6 +27,8 @@
namespace vcg {
namespace tri{
///calculate the BBox in UV space
template <class MeshType>
vcg::Box2<typename MeshType::ScalarType> PerWedgeUVBox(MeshType &m)
{
@ -40,6 +42,25 @@ namespace vcg {
}
return UVBox;
}
///transform curvature to UV space
template <class FaceType>
vcg::Point2<typename FaceType::ScalarType> Coord3DtoUV(FaceType &f,
typename FaceType::CoordType dir)
{
///then transform to UV
CoordType bary3d=(f.P(0)+f.P(1)+f.P(2))/3.0;
vcg::Point2<ScalarType> baryUV=(f.WT(0).P()+f.WT(1).P()+f.WT(2).P())/3.0;
CoordType dir3d=bary3d+dir;
CoordType baryCoordsUV;
vcg::InterpolationParameters<FaceType,ScalarType>(f,dir3d,baryCoordsUV);
vcg::Point2<ScalarType> dirUV=baryCoordsUV.X()*f.WT(0).P()+
baryCoordsUV.Y()*f.WT(1).P()+
baryCoordsUV.Z()*f.WT(2).P()-baryUV;
dirUV.Normalize();
return dirUV;
}
} //End Namespace Tri
} // End Namespace vcg
#endif