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annotate OrthancFramework/Sources/Images/PixelTraits.h @ 5095:b52fe770aec0

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author Alain Mazy <am@osimis.io>
date Wed, 12 Oct 2022 09:22:08 +0200
parents 43e613a7756b
children 0ea402b4d901
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23
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24 #pragma once
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25
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26 #include "../Compatibility.h" // For ORTHANC_FORCE_INLINE
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27 #include "../Enumerations.h"
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28
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29 #include <limits>
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30
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31 namespace Orthanc
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32 {
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33 template <PixelFormat format,
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34 typename _PixelType>
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35 struct IntegerPixelTraits
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36 {
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37 typedef _PixelType PixelType;
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38
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39 ORTHANC_FORCE_INLINE
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40 static PixelFormat GetPixelFormat()
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41 {
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42 return format;
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43 }
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44
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45 ORTHANC_FORCE_INLINE
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46 static PixelType IntegerToPixel(int64_t value)
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47 {
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48 if (value < static_cast<int64_t>(std::numeric_limits<PixelType>::min()))
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49 {
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50 return std::numeric_limits<PixelType>::min();
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51 }
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52 else if (value > static_cast<int64_t>(std::numeric_limits<PixelType>::max()))
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53 {
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54 return std::numeric_limits<PixelType>::max();
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55 }
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56 else
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57 {
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58 return static_cast<PixelType>(value);
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59 }
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60 }
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61
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62 ORTHANC_FORCE_INLINE
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63 static void SetZero(PixelType& target)
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64 {
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65 target = 0;
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66 }
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67
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68 ORTHANC_FORCE_INLINE
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69 static void SetMinValue(PixelType& target)
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70 {
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71 target = std::numeric_limits<PixelType>::min();
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72 }
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73
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74 ORTHANC_FORCE_INLINE
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75 static void SetMaxValue(PixelType& target)
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76 {
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77 target = std::numeric_limits<PixelType>::max();
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78 }
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79
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80 ORTHANC_FORCE_INLINE
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81 static void Copy(PixelType& target,
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82 const PixelType& source)
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83 {
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84 target = source;
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85 }
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86
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87 ORTHANC_FORCE_INLINE
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88 static float PixelToFloat(const PixelType& source)
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89 {
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90 return static_cast<float>(source);
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91 }
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92
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93 ORTHANC_FORCE_INLINE
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94 static void FloatToPixel(PixelType& target,
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95 float value)
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96 {
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97 value += 0.5f;
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98 if (value < static_cast<float>(std::numeric_limits<PixelType>::min()))
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99 {
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100 target = std::numeric_limits<PixelType>::min();
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101 }
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102 else if (value > static_cast<float>(std::numeric_limits<PixelType>::max()))
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103 {
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104 target = std::numeric_limits<PixelType>::max();
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105 }
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106 else
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107 {
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108 target = static_cast<PixelType>(value);
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109 }
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110 }
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111
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112 ORTHANC_FORCE_INLINE
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113 static bool IsEqual(const PixelType& a,
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114 const PixelType& b)
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115 {
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116 return a == b;
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117 }
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118 };
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119
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120
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121 template <PixelFormat Format>
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122 struct PixelTraits;
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123
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124
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125 template <>
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126 struct PixelTraits<PixelFormat_Grayscale8> :
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127 public IntegerPixelTraits<PixelFormat_Grayscale8, uint8_t>
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128 {
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129 };
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130
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131
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132 template <>
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133 struct PixelTraits<PixelFormat_Grayscale16> :
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134 public IntegerPixelTraits<PixelFormat_Grayscale16, uint16_t>
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135 {
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136 };
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137
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138
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139 template <>
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140 struct PixelTraits<PixelFormat_SignedGrayscale16> :
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141 public IntegerPixelTraits<PixelFormat_SignedGrayscale16, int16_t>
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142 {
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143 };
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144
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145
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146 template <>
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147 struct PixelTraits<PixelFormat_Grayscale32> :
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148 public IntegerPixelTraits<PixelFormat_Grayscale32, uint32_t>
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149 {
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150 };
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151
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152
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153 template <>
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154 struct PixelTraits<PixelFormat_Grayscale64> :
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155 public IntegerPixelTraits<PixelFormat_Grayscale64, uint64_t>
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156 {
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157 };
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158
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159
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160 template <>
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161 struct PixelTraits<PixelFormat_RGB24>
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162 {
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163 struct PixelType
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164 {
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165 uint8_t red_;
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166 uint8_t green_;
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167 uint8_t blue_;
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168 };
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169
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170 ORTHANC_FORCE_INLINE
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171 static PixelFormat GetPixelFormat()
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172 {
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173 return PixelFormat_RGB24;
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174 }
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175
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176 ORTHANC_FORCE_INLINE
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177 static void SetZero(PixelType& target)
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178 {
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179 target.red_ = 0;
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180 target.green_ = 0;
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181 target.blue_ = 0;
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182 }
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183
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184 ORTHANC_FORCE_INLINE
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185 static void Copy(PixelType& target,
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186 const PixelType& source)
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187 {
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188 target.red_ = source.red_;
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189 target.green_ = source.green_;
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190 target.blue_ = source.blue_;
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191 }
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192
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193 ORTHANC_FORCE_INLINE
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194 static bool IsEqual(const PixelType& a,
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195 const PixelType& b)
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196 {
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197 return (a.red_ == b.red_ &&
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198 a.green_ == b.green_ &&
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199 a.blue_ == b.blue_);
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200 }
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201
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202 ORTHANC_FORCE_INLINE
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203 static void FloatToPixel(PixelType& target,
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204 float value)
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205 {
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206 uint8_t v;
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207 PixelTraits<PixelFormat_Grayscale8>::FloatToPixel(v, value);
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208
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209 target.red_ = v;
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210 target.green_ = v;
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211 target.blue_ = v;
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212 }
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213 };
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214
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215
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216 template <>
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217 struct PixelTraits<PixelFormat_BGRA32>
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218 {
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219 struct PixelType
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220 {
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221 uint8_t blue_;
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222 uint8_t green_;
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223 uint8_t red_;
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224 uint8_t alpha_;
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225 };
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226
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227 ORTHANC_FORCE_INLINE
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228 static PixelFormat GetPixelFormat()
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229 {
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230 return PixelFormat_BGRA32;
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231 }
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232
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233 ORTHANC_FORCE_INLINE
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234 static void SetZero(PixelType& target)
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235 {
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236 target.blue_ = 0;
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237 target.green_ = 0;
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238 target.red_ = 0;
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239 target.alpha_ = 0;
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240 }
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241
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242 ORTHANC_FORCE_INLINE
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243 static void Copy(PixelType& target,
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244 const PixelType& source)
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245 {
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246 target.blue_ = source.blue_;
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247 target.green_ = source.green_;
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248 target.red_ = source.red_;
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249 target.alpha_ = source.alpha_;
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250 }
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251
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252 ORTHANC_FORCE_INLINE
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253 static bool IsEqual(const PixelType& a,
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254 const PixelType& b)
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255 {
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256 return (a.blue_ == b.blue_ &&
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257 a.green_ == b.green_ &&
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258 a.red_ == b.red_ &&
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259 a.alpha_ == b.alpha_);
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260 }
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261
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262 ORTHANC_FORCE_INLINE
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263 static void FloatToPixel(PixelType& target,
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264 float value)
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265 {
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266 uint8_t v;
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267 PixelTraits<PixelFormat_Grayscale8>::FloatToPixel(v, value);
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268
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269 target.blue_ = v;
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270 target.green_ = v;
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271 target.red_ = v;
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272 target.alpha_ = 255;
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273 }
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274 };
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275
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276
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277 template <>
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278 struct PixelTraits<PixelFormat_RGBA32>
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279 {
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280 struct PixelType
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281 {
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282 uint8_t red_;
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283 uint8_t green_;
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284 uint8_t blue_;
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285 uint8_t alpha_;
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286 };
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287
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288 ORTHANC_FORCE_INLINE
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289 static PixelFormat GetPixelFormat()
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290 {
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291 return PixelFormat_RGBA32;
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292 }
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293
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294 ORTHANC_FORCE_INLINE
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295 static void SetZero(PixelType& target)
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296 {
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297 target.red_ = 0;
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298 target.green_ = 0;
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299 target.blue_ = 0;
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300 target.alpha_ = 0;
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301 }
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302
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303 ORTHANC_FORCE_INLINE
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304 static void Copy(PixelType& target,
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305 const PixelType& source)
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306 {
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307 target.red_ = source.red_;
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308 target.green_ = source.green_;
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309 target.blue_ = source.blue_;
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310 target.alpha_ = source.alpha_;
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311 }
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312
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313 ORTHANC_FORCE_INLINE
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314 static bool IsEqual(const PixelType& a,
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315 const PixelType& b)
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316 {
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317 return (a.red_ == b.red_ &&
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318 a.green_ == b.green_ &&
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319 a.blue_ == b.blue_ &&
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320 a.alpha_ == b.alpha_);
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321 }
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322
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323 ORTHANC_FORCE_INLINE
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324 static void FloatToPixel(PixelType& target,
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325 float value)
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326 {
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327 uint8_t v;
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328 PixelTraits<PixelFormat_Grayscale8>::FloatToPixel(v, value);
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329
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330 target.red_ = v;
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331 target.green_ = v;
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332 target.blue_ = v;
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333 target.alpha_ = 255;
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334 }
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335 };
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336
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337
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338 template <>
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339 struct PixelTraits<PixelFormat_Float32>
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340 {
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341 typedef float PixelType;
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342
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343 ORTHANC_FORCE_INLINE
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344 static PixelFormat GetPixelFormat()
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345 {
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346 return PixelFormat_Float32;
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347 }
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348
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349 ORTHANC_FORCE_INLINE
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350 static void SetZero(PixelType& target)
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351 {
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352 target = 0.0f;
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353 }
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354
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355 ORTHANC_FORCE_INLINE
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356 static void Copy(PixelType& target,
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357 const PixelType& source)
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358 {
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359 target = source;
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360 }
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361
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362 ORTHANC_FORCE_INLINE
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diff changeset
363 static bool IsEqual(const PixelType& a,
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364 const PixelType& b)
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365 {
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366 float tmp = (a - b);
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367
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368 if (tmp < 0)
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369 {
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370 tmp = -tmp;
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371 }
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372
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373 return tmp <= std::numeric_limits<float>::epsilon();
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374 }
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375
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376 ORTHANC_FORCE_INLINE
3671
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377 static void SetMinValue(PixelType& target)
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378 {
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diff changeset
379 // std::numeric_limits<float>::lowest is not supported on
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diff changeset
380 // all compilers (for instance, Visual Studio 9.0 2008)
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diff changeset
381 target = -std::numeric_limits<float>::max();
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diff changeset
382 }
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diff changeset
383
3c4269229566 Added functions to retrieve min and max possible values for floating-point pixels
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diff changeset
384 ORTHANC_FORCE_INLINE
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diff changeset
385 static void SetMaxValue(PixelType& target)
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diff changeset
386 {
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diff changeset
387 target = std::numeric_limits<float>::max();
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388 }
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diff changeset
389
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390 ORTHANC_FORCE_INLINE
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391 static void FloatToPixel(PixelType& target,
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392 float value)
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393 {
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394 target = value;
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395 }
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396
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397 ORTHANC_FORCE_INLINE
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398 static float PixelToFloat(const PixelType& source)
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399 {
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400 return source;
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401 }
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402 };
2487
be1dbb1dcdd6 PixelTraits and ImageTraits
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parents:
diff changeset
403 }