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VectorAdapter.hh

00001 /*===========================================================================*\
00002  *                                                                           *
00003  *                               OpenMesh                                    *
00004  *      Copyright (C) 2001-2005 by Computer Graphics Group, RWTH Aachen      *
00005  *                           www.openmesh.org                                *
00006  *                                                                           *
00007  *---------------------------------------------------------------------------* 
00008  *                                                                           *
00009  *                                License                                    *
00010  *                                                                           *
00011  *  This library is free software; you can redistribute it and/or modify it  *
00012  *  under the terms of the GNU Library General Public License as published   *
00013  *  by the Free Software Foundation, version 2.                              *
00014  *                                                                           *
00015  *  This library is distributed in the hope that it will be useful, but      *
00016  *  WITHOUT ANY WARRANTY; without even the implied warranty of               *
00017  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU        *
00018  *  Library General Public License for more details.                         *
00019  *                                                                           *
00020  *  You should have received a copy of the GNU Library General Public        *
00021  *  License along with this library; if not, write to the Free Software      *
00022  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.                *
00023  *                                                                           *
00024 \*===========================================================================*/
00025 
00026 // ----------------------------------------------------------------------------
00027 
00028 #ifndef OPENMESH_KERNEL_OSG_VECTORADAPTER_HH
00029 #define OPENMESH_KERNEL_OSG_VECTORADAPTER_HH
00030 
00031 
00032 //== INCLUDES =================================================================
00033 
00034 #include <OpenSG/OSGGeometry.h>
00035 #include <OpenMesh/Core/Utils/vector_cast.hh>
00036 
00037 //== NAMESPACES ===============================================================
00038 
00039 namespace OpenMesh {
00040 
00041 //== CLASS DEFINITION =========================================================
00042 
00043 // ----------------------------------------------------------------- class ----
00044 
00045 #define OSG_VECTOR_TRAITS( VecType ) \
00046   template <> struct vector_traits< VecType > { \
00047     typedef VecType                vector_type; \
00048     typedef vector_type::ValueType value_type;  \
00049     typedef GenProg::Int2Type< vector_type::_iSize > typed_size; \
00050     \
00051     static const size_t size_ = vector_type::_iSize; \
00052     static size_t size() { return size_; } \
00053   }
00054 
00056 OSG_VECTOR_TRAITS( osg::Pnt4f );
00058 OSG_VECTOR_TRAITS( osg::Pnt3f );
00060 OSG_VECTOR_TRAITS( osg::Pnt2f );
00061 
00063 OSG_VECTOR_TRAITS( osg::Vec4f );
00065 OSG_VECTOR_TRAITS( osg::Vec3f );
00067 OSG_VECTOR_TRAITS( osg::Vec2f );
00068 
00070 OSG_VECTOR_TRAITS( osg::Pnt4d );
00072 OSG_VECTOR_TRAITS( osg::Pnt3d );
00074 OSG_VECTOR_TRAITS( osg::Pnt2d );
00075 
00077 OSG_VECTOR_TRAITS( osg::Vec4d );
00079 OSG_VECTOR_TRAITS( osg::Vec3d );
00080 
00082 OSG_VECTOR_TRAITS( osg::Vec4ub );
00083 
00084 
00085 // ----------------------------------------------------------------------------
00086 
00087 
00088 #define OSG_COLOR_TRAITS( VecType, N ) \
00089   template <> struct vector_traits< VecType > { \
00090     typedef VecType                vector_type; \
00091     typedef vector_type::ValueType value_type;  \
00092     typedef GenProg::Int2Type< N > typed_size; \
00093     \
00094     static const size_t size_ = N; \
00095     static size_t size() { return size_; } \
00096   }
00097 
00098 
00100 OSG_COLOR_TRAITS( osg::Color3ub, 3 );
00102 OSG_COLOR_TRAITS( osg::Color4ub, 4 );
00104 OSG_COLOR_TRAITS( osg::Color3f,  3 );
00106 OSG_COLOR_TRAITS( osg::Color4f,  4 );
00107 
00108 #undef OSG_VECTOR_TRAITS
00109 
00110 
00111 // ----------------------------------------
00112 #if 1
00113 #define PNT2VEC_CASTER( DST, SRC ) \
00114   template <> struct vector_caster< DST, SRC > { \
00115     typedef DST   dst_t; \
00116     typedef SRC   src_t; \
00117     typedef const dst_t& return_type; \
00118     inline static return_type cast( const src_t& _src ) {\
00119       return _src.subZero(); \
00120     } \
00121   }
00122 
00124 PNT2VEC_CASTER( osg::Vec3f, osg::Pnt3f );
00125 
00127 PNT2VEC_CASTER( osg::Vec4f, osg::Pnt4f );
00128 
00130 PNT2VEC_CASTER( osg::Vec3d, osg::Pnt3d );
00131 
00133 PNT2VEC_CASTER( osg::Vec4d, osg::Pnt4d );
00134 
00135 #undef PNT2VEC
00136 #else
00137  
00138   template <> 
00139   struct vector_caster< osg::Vec3f, osg::Pnt3f > 
00140   {
00141     typedef osg::Vec3f   dst_t;
00142     typedef osg::Pnt3f   src_t;
00143 
00144     typedef const dst_t& return_type;
00145     inline static return_type cast( const src_t& _src ) 
00146     {
00147       std::cout << "casting Pnt3f to Vec3f\n";
00148       return _src.subZero();
00149     }
00150   };
00151 
00152 #endif
00153 // ----------------------------------------
00154 
00156 
00157 inline
00158 osg::Vec3f::ValueType dot( const osg::Vec3f &_v1, const osg::Vec3f &_v2 )
00159 { return _v1.dot(_v2); }
00160 
00161 
00162 inline
00163 osg::Vec3f::ValueType dot( const osg::Vec3f &_v1, const osg::Pnt3f &_v2 )
00164 { return _v1.dot(_v2); }
00165 
00166 
00167 inline
00168 osg::Vec2f::ValueType dot( const osg::Vec2f &_v1, const osg::Vec2f &_v2 )
00169 { return _v1.dot(_v2); }
00170 
00171 
00172 inline
00173 osg::Vec3f cross( const osg::Vec3f &_v1, const osg::Vec3f &_v2 )
00174 { return _v1.cross(_v2); }
00176 
00177 //=============================================================================
00178 } // namespace OpenMesh
00179 //=============================================================================
00180 #endif // OPENMESH_VECTORADAPTER_HH defined
00181 //=============================================================================
00182 

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