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fall back to dummy implementation for calc_face_normal on meshes with non-3D points

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This commit is contained in:
Janis Born
2015-11-23 15:03:57 +01:00
parent 6e71f1bd57
commit b31589b15f
2 changed files with 51 additions and 3 deletions
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47
src/OpenMesh/Core/Mesh/PolyMeshT.cc
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@@ -61,6 +61,7 @@
#include <OpenMesh/Core/Mesh/PolyMeshT.hh>
#include <OpenMesh/Core/Geometry/LoopSchemeMaskT.hh>
#include <OpenMesh/Core/Utils/GenProg.hh>
#include <OpenMesh/Core/Utils/vector_cast.hh>
#include <OpenMesh/Core/System/omstream.hh>
#include <vector>
@@ -97,8 +98,18 @@ uint PolyMeshT<Kernel>::find_feature_edges(Scalar _angle_tresh)
template <class Kernel>
typename PolyMeshT<Kernel>::Normal
PolyMeshT<Kernel>::
calc_face_normal(FaceHandle _fh) const
PolyMeshT<Kernel>::calc_face_normal(FaceHandle _fh) const
{
return calc_face_normal_impl(_fh, typename GenProg::IF<
PolyMeshT<Kernel>::Point::size() == 3,
PointIs3DTag,
PointIsNot3DTag
>::Result());
}
template <class Kernel>
typename PolyMeshT<Kernel>::Normal
PolyMeshT<Kernel>::calc_face_normal_impl(FaceHandle _fh, PointIs3DTag) const
{
assert(this->halfedge_handle(_fh).is_valid());
ConstFaceVertexIter fv_it(this->cfv_iter(_fh));
@@ -139,8 +150,15 @@ calc_face_normal(FaceHandle _fh) const
: Normal(0, 0, 0);
}
//-----------------------------------------------------------------------------
template <class Kernel>
typename PolyMeshT<Kernel>::Normal
PolyMeshT<Kernel>::calc_face_normal_impl(FaceHandle, PointIsNot3DTag) const
{
// Dummy fallback implementation
return Normal(0);
}
//-----------------------------------------------------------------------------
template <class Kernel>
typename PolyMeshT<Kernel>::Normal
@@ -148,6 +166,21 @@ PolyMeshT<Kernel>::
calc_face_normal(const Point& _p0,
const Point& _p1,
const Point& _p2) const
{
return calc_face_normal_impl(_p0, _p1, _p2, typename GenProg::IF<
PolyMeshT<Kernel>::Point::size() == 3,
PointIs3DTag,
PointIsNot3DTag
>::Result());
}
template <class Kernel>
typename PolyMeshT<Kernel>::Normal
PolyMeshT<Kernel>::
calc_face_normal_impl(const Point& _p0,
const Point& _p1,
const Point& _p2,
PointIs3DTag) const
{
#if 1
// The OpenSG <Vector>::operator -= () does not support the type Point
@@ -174,6 +207,14 @@ calc_face_normal(const Point& _p0,
#endif
}
template <class Kernel>
typename PolyMeshT<Kernel>::Normal
PolyMeshT<Kernel>::
calc_face_normal_impl(const Point&, const Point&, const Point&, PointIsNot3DTag) const
{
return Normal(0);
}
//-----------------------------------------------------------------------------
template <class Kernel>

7
src/OpenMesh/Core/Mesh/PolyMeshT.hh
View File

@@ -520,6 +520,13 @@ public:
inline void split(EdgeHandle _eh, VertexHandle _vh)
{ Kernel::split_edge(_eh, _vh); }
private:
struct PointIs3DTag {};
struct PointIsNot3DTag {};
Normal calc_face_normal_impl(FaceHandle, PointIs3DTag) const;
Normal calc_face_normal_impl(FaceHandle, PointIsNot3DTag) const;
Normal calc_face_normal_impl(const Point&, const Point&, const Point&, PointIs3DTag) const;
Normal calc_face_normal_impl(const Point&, const Point&, const Point&, PointIsNot3DTag) const;
};
/**