Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Scene2D/GrayscaleWindowingSceneTracker.cpp @ 2008:37d6805b80ee deep-learning

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integration mainline->deep-learning
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 18 Nov 2022 00:37:00 +0100
parents 5a434f5889f8
children 07964689cb0b
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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
1871
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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 #include "GrayscaleWindowingSceneTracker.h"
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25
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26 #include "../Scene2DViewport/ViewportController.h"
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27 #include "FloatTextureSceneLayer.h"
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29 #include <OrthancException.h>
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30
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31 namespace OrthancStone
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32 {
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33 namespace
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34 {
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35 class GrayscaleLayerAccessor : public boost::noncopyable
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36 {
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37 private:
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38 std::unique_ptr<IViewport::ILock> lock_;
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39 FloatTextureSceneLayer* layer_;
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41 public:
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42 GrayscaleLayerAccessor(boost::weak_ptr<IViewport> viewportWeak,
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43 int layerIndex) :
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44 layer_(NULL)
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45 {
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46 boost::shared_ptr<IViewport> viewport = viewportWeak.lock();
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47 if (viewport != NULL)
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48 {
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49 lock_.reset(viewport->Lock());
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50
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51 if (lock_->GetController().GetScene().HasLayer(layerIndex))
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52 {
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53 ISceneLayer& layer = lock_->GetController().GetScene().GetLayer(layerIndex);
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54 if (layer.GetType() == ISceneLayer::Type_FloatTexture)
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55 {
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56 layer_ = &dynamic_cast<FloatTextureSceneLayer&>(layer);
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57 }
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58 }
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59 }
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60 }
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61
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62 bool IsValid() const
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63 {
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64 return layer_ != NULL;
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65 }
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66
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67 FloatTextureSceneLayer& GetLayer() const
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68 {
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69 if (layer_ == NULL)
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70 {
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71 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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72 }
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73 else
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74 {
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75 return *layer_;
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76 }
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77 }
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78
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79 void Invalidate()
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80 {
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81 if (lock_.get() != NULL)
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82 {
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83 lock_->Invalidate();
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84 }
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85 }
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87 void BroadcastGrayscaleWindowingChanged(double center,
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88 double width)
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89 {
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90 if (lock_.get() != NULL)
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91 {
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92 lock_->GetController().BroadcastGrayscaleWindowingChanged(center, width);
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93 }
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94 }
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95 };
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96 }
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97
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98 void GrayscaleWindowingSceneTracker::SetWindowing(float center,
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99 float width)
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100 {
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101 if (active_)
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102 {
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103 boost::shared_ptr<IViewport> viewport = viewport_.lock();
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104 GrayscaleLayerAccessor accessor(viewport, layerIndex_);
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105
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106 if (accessor.IsValid())
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107 {
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108 accessor.GetLayer().SetCustomWindowing(center, width);
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109 accessor.BroadcastGrayscaleWindowingChanged(center, width);
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110 accessor.Invalidate();
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111 }
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112 }
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113 }
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114
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115
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116 GrayscaleWindowingSceneTracker::GrayscaleWindowingSceneTracker(boost::weak_ptr<IViewport> viewport,
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117 int layerIndex,
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118 const PointerEvent& event,
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119 unsigned int canvasWidth,
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120 unsigned int canvasHeight) :
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121 viewport_(viewport),
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122 layerIndex_(layerIndex),
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123 clickX_(event.GetMainPosition().GetX()),
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124 clickY_(event.GetMainPosition().GetY())
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125 {
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126 active_ = false;
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127
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128 if (canvasWidth > 3 &&
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129 canvasHeight > 3)
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130 {
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131 boost::shared_ptr<IViewport> locked = viewport_.lock();
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132
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133 if (locked)
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134 {
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135 GrayscaleLayerAccessor accessor(locked, layerIndex_);
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136
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137 if (accessor.IsValid())
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138 {
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139 FloatTextureSceneLayer& layer = accessor.GetLayer();
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140
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141 layer.GetWindowing(originalCenter_, originalWidth_);
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142
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143 float minValue, maxValue;
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144 layer.GetRange(minValue, maxValue);
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145
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146 normalization_ = (maxValue - minValue) / static_cast<double>(std::min(canvasWidth, canvasHeight) - 1);
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147 active_ = true;
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148 }
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149 else
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150 {
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151 LOG(INFO) << "Cannot create GrayscaleWindowingSceneTracker on a non-float texture";
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152 }
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153 }
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154 }
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155 }
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156
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157 void GrayscaleWindowingSceneTracker::PointerMove(const PointerEvent& event,
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158 const Scene2D& scene)
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159 {
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160 if (active_)
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161 {
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162 const double x = event.GetMainPosition().GetX();
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163 const double y = event.GetMainPosition().GetY();
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164
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165 float center = originalCenter_ + static_cast<float>((x - clickX_) * normalization_);
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166 float width = originalWidth_ + static_cast<float>((y - clickY_) * normalization_);
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167
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168 if (width <= 1)
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169 {
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170 width = 1;
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171 }
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172
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173 SetWindowing(center, width);
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174 }
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175 }
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176
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177 void GrayscaleWindowingSceneTracker::Cancel(const Scene2D& scene)
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178 {
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179 SetWindowing(originalCenter_, originalWidth_);
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180 }
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181 }