OpenMesh
OpenMesh/Tools/Kernel_OSG/color_cast.hh
00001 /*===========================================================================*\
00002  *                                                                           *
00003  *                               OpenMesh                                    *
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00005  *                           www.openmesh.org                                *
00006  *                                                                           *
00007  *---------------------------------------------------------------------------* 
00008  *  This file is part of OpenMesh.                                           *
00009  *                                                                           *
00010  *  OpenMesh is free software: you can redistribute it and/or modify         * 
00011  *  it under the terms of the GNU Lesser General Public License as           *
00012  *  published by the Free Software Foundation, either version 3 of           *
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00014  *  following exceptions:                                                    *
00015  *                                                                           *
00016  *  If other files instantiate templates or use macros                       *
00017  *  or inline functions from this file, or you compile this file and         *
00018  *  link it with other files to produce an executable, this file does        *
00019  *  not by itself cause the resulting executable to be covered by the        *
00020  *  GNU Lesser General Public License. This exception does not however       *
00021  *  invalidate any other reasons why the executable file might be            *
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00023  *                                                                           *
00024  *  OpenMesh is distributed in the hope that it will be useful,              *
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00026  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *
00027  *  GNU Lesser General Public License for more details.                      *
00028  *                                                                           *
00029  *  You should have received a copy of the GNU LesserGeneral Public          *
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00032  *                                                                           *
00033 \*===========================================================================*/ 
00034 
00035 /*===========================================================================*\
00036  *                                                                           *             
00037  *   $Revision: 362 $                                                         *
00038  *   $Date: 2011-01-26 10:21:12 +0100 (Mi, 26 Jan 2011) $                   *
00039  *                                                                           *
00040 \*===========================================================================*/
00041 
00042 #ifndef OPENMESH_KERNEL_OSG_COLOR_CAST_HH
00043 #define OPENMESH_KERNEL_OSG_COLOR_CAST_HH
00044 
00045 #include <algorithm>
00046 #include <OpenMesh/Core/Utils/color_cast.hh>
00047 #include <OpenSG/OSGGeometry.h>
00048 
00049 namespace OpenMesh {
00050 
00053 template <>
00054 struct color_caster<osg::Color3ub,osg::Color3f>
00055 {
00056   typedef osg::Color3ub return_type;
00057   typedef unsigned char ub;
00058 
00059   inline static return_type cast(const osg::Color3f& _src)
00060   {
00061     return return_type( (ub)std::min((_src[0]* 255.0f + 0.5f),255.0f),
00062                         (ub)std::min((_src[1]* 255.0f + 0.5f),255.0f),
00063                         (ub)std::min((_src[2]* 255.0f + 0.5f),255.0f) );
00064   }
00065 };
00066 
00069 template <>
00070 struct color_caster<osg::Color3f,osg::Color3ub>
00071 {
00072   typedef osg::Color3f return_type;
00073 
00074   inline static return_type cast(const osg::Color3ub& _src)
00075   {
00076     return return_type( (float)(_src[0] / 255.0f ),
00077                         (float)(_src[1] / 255.0f ),
00078                         (float)(_src[2] / 255.0f ) );
00079   }
00080 };
00081 
00082 } // namespace OpenMesh
00083 
00084 #endif // OPENMESH_KERNEL_OSG_COLOR_CAST_HH 
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