Traits.hh

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//=============================================================================
//
//  CLASS Traits
//
//=============================================================================

#ifndef OPENMESH_TRAITS_HH
#define OPENMESH_TRAITS_HH


//== INCLUDES =================================================================


#include <OpenMesh/Core/System/config.h>
#include <OpenMesh/Core/Geometry/VectorT.hh>
#include <OpenMesh/Core/Mesh/Attributes.hh>
#include <OpenMesh/Core/Mesh/Handles.hh>


//== NAMESPACES ===============================================================


namespace OpenMesh {


//== CLASS DEFINITION =========================================================


#define VertexAttributes(_i) enum { VertexAttributes = _i }

#define HalfedgeAttributes(_i) enum { HalfedgeAttributes = _i }

#define EdgeAttributes(_i) enum { EdgeAttributes = _i }

#define FaceAttributes(_i) enum { FaceAttributes = _i }

#define VertexTraits \
  template <class Base, class Refs> struct VertexT : public Base

#define HalfedgeTraits \
  template <class Base, class Refs> struct HalfedgeT : public Base

#define EdgeTraits \
  template <class Base, class Refs> struct EdgeT : public Base

#define FaceTraits \
  template <class Base, class Refs> struct FaceT : public Base



//== CLASS DEFINITION =========================================================


struct DefaultTraits
{
  typedef Vec3f  Point;

  typedef Vec3f  Normal;

  typedef float  TexCoord1D;
  typedef Vec2f  TexCoord2D;
  typedef Vec3f  TexCoord3D;

  typedef int TextureIndex;

  typedef Vec3uc Color;

#ifndef DOXY_IGNORE_THIS
  VertexTraits    {};
  HalfedgeTraits  {};
  EdgeTraits      {};
  FaceTraits      {};
#endif

  VertexAttributes(0);
  HalfedgeAttributes(Attributes::PrevHalfedge);
  EdgeAttributes(0);
  FaceAttributes(0);
};

struct DefaultTraitsDouble : public DefaultTraits
{
  typedef OpenMesh::Vec3d Point;
  typedef OpenMesh::Vec3d Normal;
  typedef OpenMesh::Vec4f Color;
};


//== CLASS DEFINITION =========================================================


template <class _Traits1, class _Traits2> struct MergeTraits
{
#ifndef DOXY_IGNORE_THIS
  struct Result
  {
    // Mipspro needs this (strange) typedef
    typedef _Traits1  T1;
    typedef _Traits2  T2;


    VertexAttributes   ( T1::VertexAttributes   | T2::VertexAttributes   );
    HalfedgeAttributes ( T1::HalfedgeAttributes | T2::HalfedgeAttributes );
    EdgeAttributes     ( T1::EdgeAttributes     | T2::EdgeAttributes     );
    FaceAttributes     ( T1::FaceAttributes     | T2::FaceAttributes     );


    typedef typename T1::Point    Point;
    typedef typename T1::Normal   Normal;
    typedef typename T1::Color    Color;
    typedef typename T1::TexCoord TexCoord;

    template <class Base, class Refs> class VertexT :
      public T1::template VertexT<
      typename T2::template VertexT<Base, Refs>, Refs>
    {};

    template <class Base, class Refs> class HalfedgeT :
      public T1::template HalfedgeT<
      typename T2::template HalfedgeT<Base, Refs>, Refs>
    {};


    template <class Base, class Refs> class EdgeT :
      public T1::template EdgeT<
      typename T2::template EdgeT<Base, Refs>, Refs>
    {};


    template <class Base, class Refs> class FaceT :
      public T1::template FaceT<
      typename T2::template FaceT<Base, Refs>, Refs>
    {};
  };
#endif
};


#define OM_Merge_Traits(_S1, _S2, _D) \
  typedef OpenMesh::MergeTraits<_S1, _S2>::Result _D;


#define OM_Merge_Traits_In_Template(_S1, _S2, _D) \
  typedef typename OpenMesh::MergeTraits<_S1, _S2>::Result _D;


//=============================================================================
} // namespace OpenMesh
//=============================================================================
#endif // OPENMESH_TRAITS_HH defined
//=============================================================================