OpenMesh
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00001 /*===========================================================================*\ 00002 * * 00003 * OpenMesh * 00004 * Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen * 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 * 00013 * the License, or (at your option) any later version with the * 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 * 00022 * covered by the GNU Lesser General Public License. * 00023 * * 00024 * OpenMesh is distributed in the hope that it will be useful, * 00025 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 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 * 00030 * License along with OpenMesh. If not, * 00031 * see <http://www.gnu.org/licenses/>. * 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 00043 //============================================================================= 00044 // 00045 // Helper Functions for binary reading / writing 00046 // 00047 //============================================================================= 00048 00049 00050 #ifndef OPENMESH_COLOR_CAST_HH 00051 #define OPENMESH_COLOR_CAST_HH 00052 00053 00054 //== INCLUDES ================================================================= 00055 00056 00057 #include <OpenMesh/Core/System/config.h> 00058 #include <OpenMesh/Core/Utils/vector_cast.hh> 00059 00060 //== NAMESPACES =============================================================== 00061 00062 00063 namespace OpenMesh { 00064 00065 00066 //============================================================================= 00067 00068 00072 00073 //----------------------------------------------------------------------------- 00074 #ifndef DOXY_IGNORE_THIS 00075 00077 template <typename dst_t, typename src_t> 00078 struct color_caster 00079 { 00080 typedef dst_t return_type; 00081 00082 inline static return_type cast(const src_t& _src) 00083 { 00084 dst_t dst; 00085 vector_copy(_src, dst, GenProg::Int2Type<vector_traits<dst_t>::size_>()); 00086 return dst; 00087 } 00088 }; 00089 00090 00091 template <> 00092 struct color_caster<Vec3uc,Vec3f> 00093 { 00094 typedef Vec3uc return_type; 00095 00096 inline static return_type cast(const Vec3f& _src) 00097 { 00098 return Vec3uc( (unsigned char)(_src[0]* 255.0f + 0.5f), 00099 (unsigned char)(_src[1]* 255.0f + 0.5f), 00100 (unsigned char)(_src[2]* 255.0f + 0.5f) ); 00101 } 00102 }; 00103 00104 template <> 00105 struct color_caster<Vec3uc,Vec4f> 00106 { 00107 typedef Vec3uc return_type; 00108 00109 inline static return_type cast(const Vec4f& _src) 00110 { 00111 return Vec3uc( (unsigned char)(_src[0]* 255.0f + 0.5f), 00112 (unsigned char)(_src[1]* 255.0f + 0.5f), 00113 (unsigned char)(_src[2]* 255.0f + 0.5f) ); 00114 } 00115 }; 00116 00117 template <> 00118 struct color_caster<Vec4uc,Vec3f> 00119 { 00120 typedef Vec4uc return_type; 00121 00122 inline static return_type cast(const Vec3f& _src) 00123 { 00124 return Vec4uc( (unsigned char)(_src[0]* 255.0f + 0.5f), 00125 (unsigned char)(_src[1]* 255.0f + 0.5f), 00126 (unsigned char)(_src[2]* 255.0f + 0.5f), 00127 (unsigned char)(255) ); 00128 } 00129 }; 00130 00131 template <> 00132 struct color_caster<Vec4uc,Vec4f> 00133 { 00134 typedef Vec4uc return_type; 00135 00136 inline static return_type cast(const Vec4f& _src) 00137 { 00138 return Vec4uc( (unsigned char)(_src[0]* 255.0f + 0.5f), 00139 (unsigned char)(_src[1]* 255.0f + 0.5f), 00140 (unsigned char)(_src[2]* 255.0f + 0.5f), 00141 (unsigned char)(_src[3]* 255.0f + 0.5f) ); 00142 } 00143 }; 00144 00145 template <> 00146 struct color_caster<Vec4uc,Vec3uc> 00147 { 00148 typedef Vec4uc return_type; 00149 00150 inline static return_type cast(const Vec3uc& _src) 00151 { 00152 return Vec4uc( _src[0], _src[1], _src[2], 255 ); 00153 } 00154 }; 00155 00156 template <> 00157 struct color_caster<Vec3f, Vec3uc> 00158 { 00159 typedef Vec3f return_type; 00160 00161 inline static return_type cast(const Vec3uc& _src) 00162 { 00163 const float f = 1.0f / 255.0f; 00164 return Vec3f(_src[0] * f, _src[1] * f, _src[2] * f ); 00165 } 00166 }; 00167 00168 template <> 00169 struct color_caster<Vec3f, Vec4uc> 00170 { 00171 typedef Vec3f return_type; 00172 00173 inline static return_type cast(const Vec4uc& _src) 00174 { 00175 const float f = 1.0f / 255.0f; 00176 return Vec3f(_src[0] * f, _src[1] * f, _src[2] * f ); 00177 } 00178 }; 00179 00180 template <> 00181 struct color_caster<Vec4f, Vec3uc> 00182 { 00183 typedef Vec4f return_type; 00184 00185 inline static return_type cast(const Vec3uc& _src) 00186 { 00187 const float f = 1.0f / 255.0f; 00188 return Vec4f(_src[0] * f, _src[1] * f, _src[2] * f, 1.0f ); 00189 } 00190 }; 00191 00192 template <> 00193 struct color_caster<Vec4f, Vec4uc> 00194 { 00195 typedef Vec4f return_type; 00196 00197 inline static return_type cast(const Vec4uc& _src) 00198 { 00199 const float f = 1.0f / 255.0f; 00200 return Vec4f(_src[0] * f, _src[1] * f, _src[2] * f, _src[3] * f ); 00201 } 00202 }; 00203 00204 // ---------------------------------------------------------------------------- 00205 00206 00207 #ifndef DOXY_IGNORE_THIS 00208 00209 #if !defined(OM_CC_MSVC) 00210 template <typename dst_t> 00211 struct color_caster<dst_t,dst_t> 00212 { 00213 typedef const dst_t& return_type; 00214 00215 inline static return_type cast(const dst_t& _src) 00216 { 00217 return _src; 00218 } 00219 }; 00220 #endif 00221 00222 #endif 00223 00224 //----------------------------------------------------------------------------- 00225 00226 00227 template <typename dst_t, typename src_t> 00228 inline 00229 typename color_caster<dst_t, src_t>::return_type 00230 color_cast(const src_t& _src ) 00231 { 00232 return color_caster<dst_t, src_t>::cast(_src); 00233 } 00234 00235 #endif 00236 //----------------------------------------------------------------------------- 00237 00239 00240 00241 //============================================================================= 00242 } // namespace OpenMesh 00243 //============================================================================= 00244 #endif // OPENMESH_COLOR_CAST_HH defined 00245 //============================================================================= 00246