183
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1 /**
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2 * Stone of Orthanc
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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) 2017-2018 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 Affero 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 * Affero 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 Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #pragma once
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23
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24 #include "../Volumes/ImageBuffer3D.h"
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25 #include "GeometryToolbox.h"
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26
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27 #include <Core/Images/ImageTraits.h>
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28
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29 #include <boost/noncopyable.hpp>
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30 #include <cmath>
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31
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32 namespace OrthancStone
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33 {
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34 namespace Internals
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35 {
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36 class SubvoxelReaderBase : public boost::noncopyable
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37 {
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38 private:
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39 const ImageBuffer3D& source_;
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40 unsigned int width_;
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41 unsigned int height_;
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42 unsigned int depth_;
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43
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44 public:
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45 SubvoxelReaderBase(const ImageBuffer3D& source) :
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46 source_(source),
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47 width_(source.GetWidth()),
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48 height_(source.GetHeight()),
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49 depth_(source.GetDepth())
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50 {
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51 }
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52
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53 ORTHANC_FORCE_INLINE
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54 const Orthanc::ImageAccessor& GetSource() const
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55 {
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56 return source_.GetInternalImage();
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57 }
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58
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59 ORTHANC_FORCE_INLINE
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60 unsigned int GetWidth() const
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61 {
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62 return width_;
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63 }
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64
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65 ORTHANC_FORCE_INLINE
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66 unsigned int GetHeight() const
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67 {
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68 return height_;
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69 }
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70
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71 ORTHANC_FORCE_INLINE
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72 unsigned int GetDepth() const
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73 {
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74 return depth_;
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75 }
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76
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77 ORTHANC_FORCE_INLINE
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78 unsigned int ComputeRow(unsigned int y,
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79 unsigned int z) const
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80 {
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81 return z * height_ + y;
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82 }
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83 };
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84 }
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85
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86
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87 template <Orthanc::PixelFormat Format,
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88 ImageInterpolation Interpolation>
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89 class SubvoxelReader;
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90
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91
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92 template <Orthanc::PixelFormat Format>
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93 class SubvoxelReader<Format, ImageInterpolation_Nearest> :
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94 public Internals::SubvoxelReaderBase
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95 {
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96 public:
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97 typedef Orthanc::PixelTraits<Format> Traits;
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98 typedef typename Traits::PixelType PixelType;
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99
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100 SubvoxelReader(const ImageBuffer3D& source) :
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101 SubvoxelReaderBase(source)
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102 {
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103 }
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104
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105 inline bool GetValue(PixelType& target,
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106 float x,
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107 float y,
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108 float z) const;
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109
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110 inline bool GetFloatValue(float& target,
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111 float x,
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112 float y,
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113 float z) const;
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114 };
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115
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116
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117 template <Orthanc::PixelFormat Format>
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118 class SubvoxelReader<Format, ImageInterpolation_Bilinear> :
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119 public Internals::SubvoxelReaderBase
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120 {
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121 public:
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122 typedef Orthanc::PixelTraits<Format> Traits;
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123 typedef typename Traits::PixelType PixelType;
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124
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125 SubvoxelReader(const ImageBuffer3D& source) :
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126 SubvoxelReaderBase(source)
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127 {
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128 }
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129
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130 inline bool Sample(float& f00,
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131 float& f01,
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132 float& f10,
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133 float& f11,
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134 unsigned int ux,
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135 unsigned int uy,
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136 unsigned int uz) const;
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137
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138 inline bool GetValue(PixelType& target,
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139 float x,
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140 float y,
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141 float z) const;
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142
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143 inline bool GetFloatValue(float& target,
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144 float x,
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145 float y,
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146 float z) const;
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147 };
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148
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149
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150 template <Orthanc::PixelFormat Format>
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151 class SubvoxelReader<Format, ImageInterpolation_Trilinear> :
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152 public Internals::SubvoxelReaderBase
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153 {
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154 private:
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155 SubvoxelReader<Format, ImageInterpolation_Bilinear> bilinear_;
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156
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157 public:
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158 typedef Orthanc::PixelTraits<Format> Traits;
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159 typedef typename Traits::PixelType PixelType;
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160
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161 SubvoxelReader(const ImageBuffer3D& source) :
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162 SubvoxelReaderBase(source),
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163 bilinear_(source)
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164 {
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165 }
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166
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167 inline bool GetValue(PixelType& target,
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168 float x,
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169 float y,
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170 float z) const;
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171
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172 inline bool GetFloatValue(float& target,
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173 float x,
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174 float y,
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175 float z) const;
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176 };
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177
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178
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179
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180 template <Orthanc::PixelFormat Format>
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181 bool SubvoxelReader<Format, ImageInterpolation_Nearest>::GetValue(PixelType& target,
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182 float x,
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183 float y,
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184 float z) const
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185 {
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186 if (x < 0 ||
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187 y < 0 ||
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188 z < 0)
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189 {
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190 return false;
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191 }
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192 else
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193 {
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194 unsigned int ux = static_cast<unsigned int>(std::floor(x));
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195 unsigned int uy = static_cast<unsigned int>(std::floor(y));
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196 unsigned int uz = static_cast<unsigned int>(std::floor(z));
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197
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198 if (ux < GetWidth() &&
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199 uy < GetHeight() &&
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200 uz < GetDepth())
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201 {
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202 Orthanc::ImageTraits<Format>::GetPixel(target, GetSource(), ux, ComputeRow(uy, uz));
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203 return true;
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204 }
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205 else
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206 {
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207 return false;
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208 }
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209 }
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210 }
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211
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212
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213 template <Orthanc::PixelFormat Format>
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214 bool SubvoxelReader<Format, ImageInterpolation_Nearest>::GetFloatValue(float& target,
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215 float x,
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216 float y,
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217 float z) const
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218 {
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219 PixelType value;
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220
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221 if (GetValue(value, x, y, z))
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222 {
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223 target = Traits::PixelToFloat(value);
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224 return true;
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225 }
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226 else
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227 {
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228 return false;
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229 }
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230 }
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231
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232
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233
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234 template <Orthanc::PixelFormat Format>
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235 bool SubvoxelReader<Format, ImageInterpolation_Bilinear>::Sample(float& f00,
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236 float& f01,
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237 float& f10,
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238 float& f11,
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239 unsigned int ux,
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240 unsigned int uy,
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241 unsigned int uz) const
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242 {
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243 if (ux < GetWidth() &&
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244 uy < GetHeight() &&
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245 uz < GetDepth())
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246 {
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247 f00 = Orthanc::ImageTraits<Format>::GetFloatPixel(GetSource(), ux, ComputeRow(uy, uz));
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248 }
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249 else
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250 {
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251 // Pixel is out of the volume
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252 return false;
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253 }
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254
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255 if (ux + 1 < GetWidth())
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256 {
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257 f01 = Orthanc::ImageTraits<Format>::GetFloatPixel(GetSource(), ux + 1, ComputeRow(uy, uz));
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258 }
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259 else
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260 {
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261 f01 = f00;
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262 }
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263
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264 if (uy + 1 < GetHeight())
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265 {
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266 f10 = Orthanc::ImageTraits<Format>::GetFloatPixel(GetSource(), ux, ComputeRow(uy + 1, uz));
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267 }
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268 else
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269 {
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270 f10 = f00;
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271 }
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272
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273 if (ux + 1 < GetWidth() &&
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274 uy + 1 < GetHeight())
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275 {
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276 f11 = Orthanc::ImageTraits<Format>::GetFloatPixel(GetSource(), ux + 1, ComputeRow(uy + 1, uz));
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277 }
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278 else
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279 {
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280 f11 = f00;
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281 }
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282
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283 return true;
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284 }
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285
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286
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287
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288 template <Orthanc::PixelFormat Format>
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289 bool SubvoxelReader<Format, ImageInterpolation_Bilinear>::GetFloatValue(float& target,
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290 float x,
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291 float y,
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292 float z) const
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293 {
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294 x -= 0.5f;
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295 y -= 0.5f;
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296
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297 if (x < 0 ||
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298 y < 0 ||
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299 z < 0)
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300 {
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301 return false;
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302 }
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303 else
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304 {
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305 unsigned int ux = static_cast<unsigned int>(std::floor(x));
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306 unsigned int uy = static_cast<unsigned int>(std::floor(y));
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307 unsigned int uz = static_cast<unsigned int>(std::floor(z));
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308
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309 float f00, f01, f10, f11;
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310 if (Sample(f00, f01, f10, f11, ux, uy, uz))
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311 {
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312 float ax = x - static_cast<float>(ux);
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313 float ay = y - static_cast<float>(uy);
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314
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315 target = GeometryToolbox::ComputeBilinearInterpolationUnitSquare(ax, ay, f00, f01, f10, f11);
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316 return true;
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317 }
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318 else
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319 {
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320 return false;
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321 }
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322 }
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323 }
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324
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325
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326
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327 template <Orthanc::PixelFormat Format>
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328 bool SubvoxelReader<Format, ImageInterpolation_Bilinear>::GetValue(PixelType& target,
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329 float x,
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330 float y,
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331 float z) const
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332 {
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333 float value;
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334
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335 if (GetFloatValue(value, x, y, z))
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336 {
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337 Traits::FloatToPixel(target, value);
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338 return true;
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339 }
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340 else
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341 {
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342 return false;
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343 }
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344 }
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345
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346
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347
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348 template <Orthanc::PixelFormat Format>
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349 bool SubvoxelReader<Format, ImageInterpolation_Trilinear>::GetFloatValue(float& target,
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350 float x,
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351 float y,
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352 float z) const
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353 {
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354 x -= 0.5f;
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355 y -= 0.5f;
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356 z -= 0.5f;
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357
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358 if (x < 0 ||
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359 y < 0 ||
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360 z < 0)
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361 {
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362 return false;
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363 }
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364 else
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365 {
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366 unsigned int ux = static_cast<unsigned int>(std::floor(x));
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367 unsigned int uy = static_cast<unsigned int>(std::floor(y));
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368 unsigned int uz = static_cast<unsigned int>(std::floor(z));
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369
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370 float f000, f001, f010, f011;
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371 if (bilinear_.Sample(f000, f001, f010, f011, ux, uy, uz))
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372 {
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373 const float ax = x - static_cast<float>(ux);
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374 const float ay = y - static_cast<float>(uy);
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375
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376 float f100, f101, f110, f111;
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377
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378 if (bilinear_.Sample(f100, f101, f110, f111, ux, uy, uz + 1))
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379 {
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380 const float az = z - static_cast<float>(uz);
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381 target = GeometryToolbox::ComputeTrilinearInterpolationUnitSquare
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382 (ax, ay, az, f000, f001, f010, f011, f100, f101, f110, f111);
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383 }
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384 else
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385 {
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386 target = GeometryToolbox::ComputeBilinearInterpolationUnitSquare
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387 (ax, ay, f000, f001, f010, f011);
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388 }
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389
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390 return true;
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391 }
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392 else
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393 {
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394 return false;
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395 }
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396 }
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397 }
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398
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399
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400
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401 template <Orthanc::PixelFormat Format>
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402 bool SubvoxelReader<Format, ImageInterpolation_Trilinear>::GetValue(PixelType& target,
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403 float x,
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404 float y,
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405 float z) const
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406 {
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407 float value;
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408
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409 if (GetFloatValue(value, x, y, z))
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410 {
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411 Traits::FloatToPixel(target, value);
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412 return true;
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413 }
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414 else
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415 {
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416 return false;
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417 }
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418 }
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419 }
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