manolas
/
vcglib
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
vcg/complex/algorithms/parametrization/uv_utils.h
View File

@ -27,6 +27,8 @@
namespace vcg { namespace vcg {
namespace tri{ namespace tri{
///calculate the BBox in UV space
template <class MeshType> template <class MeshType>
vcg::Box2<typename MeshType::ScalarType> PerWedgeUVBox(MeshType &m) vcg::Box2<typename MeshType::ScalarType> PerWedgeUVBox(MeshType &m)
{ {
@ -40,6 +42,25 @@ namespace vcg {
} }
return UVBox; 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 Tri
} // End Namespace vcg } // End Namespace vcg
#endif #endif