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annotate OrthancFramework/Sources/Images/PixelTraits.h @ 4195:db38b2ad4c4a

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author Alain Mazy <alain@mazy.be>
date Wed, 16 Sep 2020 11:24:08 +0200
parents bf7b9edf6b81
children 2007ab69ac16
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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) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #pragma once
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24
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25 #include "../Enumerations.h"
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26
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27 #include <limits>
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28
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29 namespace Orthanc
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30 {
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31 template <PixelFormat format,
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32 typename _PixelType>
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33 struct IntegerPixelTraits
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34 {
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35 typedef _PixelType PixelType;
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36
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37 ORTHANC_FORCE_INLINE
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38 static PixelFormat GetPixelFormat()
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39 {
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40 return format;
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41 }
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42
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43 ORTHANC_FORCE_INLINE
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44 static PixelType IntegerToPixel(int64_t value)
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45 {
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46 if (value < static_cast<int64_t>(std::numeric_limits<PixelType>::min()))
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47 {
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48 return std::numeric_limits<PixelType>::min();
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49 }
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50 else if (value > static_cast<int64_t>(std::numeric_limits<PixelType>::max()))
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51 {
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52 return std::numeric_limits<PixelType>::max();
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53 }
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54 else
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55 {
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56 return static_cast<PixelType>(value);
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57 }
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58 }
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59
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60 ORTHANC_FORCE_INLINE
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61 static void SetZero(PixelType& target)
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62 {
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63 target = 0;
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64 }
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65
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66 ORTHANC_FORCE_INLINE
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67 static void SetMinValue(PixelType& target)
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68 {
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69 target = std::numeric_limits<PixelType>::min();
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70 }
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71
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72 ORTHANC_FORCE_INLINE
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73 static void SetMaxValue(PixelType& target)
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74 {
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75 target = std::numeric_limits<PixelType>::max();
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76 }
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77
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78 ORTHANC_FORCE_INLINE
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79 static void Copy(PixelType& target,
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80 const PixelType& source)
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81 {
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82 target = source;
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83 }
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84
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85 ORTHANC_FORCE_INLINE
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86 static float PixelToFloat(const PixelType& source)
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87 {
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88 return static_cast<float>(source);
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89 }
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90
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91 ORTHANC_FORCE_INLINE
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92 static void FloatToPixel(PixelType& target,
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93 float value)
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94 {
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95 value += 0.5f;
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96 if (value < static_cast<float>(std::numeric_limits<PixelType>::min()))
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97 {
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98 target = std::numeric_limits<PixelType>::min();
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99 }
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100 else if (value > static_cast<float>(std::numeric_limits<PixelType>::max()))
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101 {
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102 target = std::numeric_limits<PixelType>::max();
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103 }
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104 else
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105 {
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106 target = static_cast<PixelType>(value);
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107 }
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108 }
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109
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110 ORTHANC_FORCE_INLINE
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111 static bool IsEqual(const PixelType& a,
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112 const PixelType& b)
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113 {
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114 return a == b;
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115 }
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116 };
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117
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118
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119 template <PixelFormat Format>
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120 struct PixelTraits;
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121
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122
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123 template <>
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124 struct PixelTraits<PixelFormat_Grayscale8> :
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125 public IntegerPixelTraits<PixelFormat_Grayscale8, uint8_t>
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126 {
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127 };
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128
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129
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130 template <>
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131 struct PixelTraits<PixelFormat_Grayscale16> :
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132 public IntegerPixelTraits<PixelFormat_Grayscale16, uint16_t>
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133 {
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134 };
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135
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136
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137 template <>
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138 struct PixelTraits<PixelFormat_SignedGrayscale16> :
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139 public IntegerPixelTraits<PixelFormat_SignedGrayscale16, int16_t>
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140 {
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141 };
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142
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143
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144 template <>
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145 struct PixelTraits<PixelFormat_Grayscale32> :
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146 public IntegerPixelTraits<PixelFormat_Grayscale32, uint32_t>
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147 {
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148 };
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149
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150
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151 template <>
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152 struct PixelTraits<PixelFormat_Grayscale64> :
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153 public IntegerPixelTraits<PixelFormat_Grayscale64, uint64_t>
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154 {
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155 };
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156
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157
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158 template <>
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159 struct PixelTraits<PixelFormat_RGB24>
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160 {
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161 struct PixelType
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162 {
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163 uint8_t red_;
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164 uint8_t green_;
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165 uint8_t blue_;
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166 };
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167
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168 ORTHANC_FORCE_INLINE
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169 static PixelFormat GetPixelFormat()
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170 {
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171 return PixelFormat_RGB24;
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172 }
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173
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174 ORTHANC_FORCE_INLINE
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175 static void SetZero(PixelType& target)
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176 {
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177 target.red_ = 0;
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178 target.green_ = 0;
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179 target.blue_ = 0;
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180 }
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181
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182 ORTHANC_FORCE_INLINE
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183 static void Copy(PixelType& target,
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184 const PixelType& source)
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185 {
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186 target.red_ = source.red_;
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187 target.green_ = source.green_;
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188 target.blue_ = source.blue_;
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189 }
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190
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191 ORTHANC_FORCE_INLINE
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192 static bool IsEqual(const PixelType& a,
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193 const PixelType& b)
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194 {
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195 return (a.red_ == b.red_ &&
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196 a.green_ == b.green_ &&
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197 a.blue_ == b.blue_);
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198 }
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199
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200 ORTHANC_FORCE_INLINE
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201 static void FloatToPixel(PixelType& target,
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202 float value)
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203 {
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204 uint8_t v;
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205 PixelTraits<PixelFormat_Grayscale8>::FloatToPixel(v, value);
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206
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207 target.red_ = v;
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208 target.green_ = v;
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209 target.blue_ = v;
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210 }
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211 };
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212
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213
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214 template <>
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215 struct PixelTraits<PixelFormat_BGRA32>
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216 {
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217 struct PixelType
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218 {
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219 uint8_t blue_;
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220 uint8_t green_;
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221 uint8_t red_;
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222 uint8_t alpha_;
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223 };
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224
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225 ORTHANC_FORCE_INLINE
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226 static PixelFormat GetPixelFormat()
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227 {
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228 return PixelFormat_BGRA32;
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229 }
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230
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231 ORTHANC_FORCE_INLINE
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232 static void SetZero(PixelType& target)
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233 {
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234 target.blue_ = 0;
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235 target.green_ = 0;
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236 target.red_ = 0;
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237 target.alpha_ = 0;
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238 }
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239
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240 ORTHANC_FORCE_INLINE
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241 static void Copy(PixelType& target,
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242 const PixelType& source)
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243 {
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244 target.blue_ = source.blue_;
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245 target.green_ = source.green_;
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246 target.red_ = source.red_;
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247 target.alpha_ = source.alpha_;
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248 }
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249
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250 ORTHANC_FORCE_INLINE
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251 static bool IsEqual(const PixelType& a,
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252 const PixelType& b)
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253 {
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254 return (a.blue_ == b.blue_ &&
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255 a.green_ == b.green_ &&
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256 a.red_ == b.red_ &&
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257 a.alpha_ == b.alpha_);
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258 }
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259
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260 ORTHANC_FORCE_INLINE
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261 static void FloatToPixel(PixelType& target,
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262 float value)
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263 {
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264 uint8_t v;
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265 PixelTraits<PixelFormat_Grayscale8>::FloatToPixel(v, value);
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266
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267 target.blue_ = v;
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268 target.green_ = v;
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269 target.red_ = v;
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270 target.alpha_ = 255;
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271 }
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272 };
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273
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274
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275 template <>
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276 struct PixelTraits<PixelFormat_RGBA32>
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277 {
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278 struct PixelType
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279 {
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280 uint8_t red_;
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281 uint8_t green_;
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282 uint8_t blue_;
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283 uint8_t alpha_;
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284 };
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285
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286 ORTHANC_FORCE_INLINE
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287 static PixelFormat GetPixelFormat()
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288 {
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289 return PixelFormat_RGBA32;
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290 }
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291
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292 ORTHANC_FORCE_INLINE
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293 static void SetZero(PixelType& target)
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294 {
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295 target.red_ = 0;
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296 target.green_ = 0;
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297 target.blue_ = 0;
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298 target.alpha_ = 0;
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299 }
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300
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301 ORTHANC_FORCE_INLINE
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302 static void Copy(PixelType& target,
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303 const PixelType& source)
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304 {
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305 target.red_ = source.red_;
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306 target.green_ = source.green_;
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307 target.blue_ = source.blue_;
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308 target.alpha_ = source.alpha_;
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309 }
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310
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311 ORTHANC_FORCE_INLINE
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312 static bool IsEqual(const PixelType& a,
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313 const PixelType& b)
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314 {
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315 return (a.red_ == b.red_ &&
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316 a.green_ == b.green_ &&
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317 a.blue_ == b.blue_ &&
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318 a.alpha_ == b.alpha_);
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319 }
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320
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321 ORTHANC_FORCE_INLINE
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322 static void FloatToPixel(PixelType& target,
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323 float value)
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324 {
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325 uint8_t v;
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326 PixelTraits<PixelFormat_Grayscale8>::FloatToPixel(v, value);
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327
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328 target.red_ = v;
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329 target.green_ = v;
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330 target.blue_ = v;
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331 target.alpha_ = 255;
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332 }
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333 };
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334
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335
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336 template <>
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337 struct PixelTraits<PixelFormat_Float32>
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338 {
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339 typedef float PixelType;
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340
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341 ORTHANC_FORCE_INLINE
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342 static PixelFormat GetPixelFormat()
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343 {
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344 return PixelFormat_Float32;
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345 }
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346
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347 ORTHANC_FORCE_INLINE
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348 static void SetZero(PixelType& target)
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349 {
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350 target = 0.0f;
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351 }
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352
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353 ORTHANC_FORCE_INLINE
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354 static void Copy(PixelType& target,
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355 const PixelType& source)
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356 {
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357 target = source;
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358 }
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359
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360 ORTHANC_FORCE_INLINE
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diff changeset
361 static bool IsEqual(const PixelType& a,
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diff changeset
362 const PixelType& b)
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363 {
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364 float tmp = (a - b);
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365
89b789366596 Grayscale64 pixel format
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366 if (tmp < 0)
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367 {
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368 tmp = -tmp;
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369 }
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370
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371 return tmp <= std::numeric_limits<float>::epsilon();
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372 }
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373
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diff changeset
374 ORTHANC_FORCE_INLINE
3671
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diff changeset
375 static void SetMinValue(PixelType& target)
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376 {
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diff changeset
377 // std::numeric_limits<float>::lowest is not supported on
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diff changeset
378 // all compilers (for instance, Visual Studio 9.0 2008)
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diff changeset
379 target = -std::numeric_limits<float>::max();
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diff changeset
380 }
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diff changeset
381
3c4269229566 Added functions to retrieve min and max possible values for floating-point pixels
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diff changeset
382 ORTHANC_FORCE_INLINE
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diff changeset
383 static void SetMaxValue(PixelType& target)
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diff changeset
384 {
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diff changeset
385 target = std::numeric_limits<float>::max();
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diff changeset
386 }
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diff changeset
387
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diff changeset
388 ORTHANC_FORCE_INLINE
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389 static void FloatToPixel(PixelType& target,
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390 float value)
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391 {
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392 target = value;
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393 }
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394
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395 ORTHANC_FORCE_INLINE
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diff changeset
396 static float PixelToFloat(const PixelType& source)
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397 {
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398 return source;
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399 }
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400 };
2487
be1dbb1dcdd6 PixelTraits and ImageTraits
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parents:
diff changeset
401 }