Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2D/GrayscaleWindowingSceneTracker.cpp @ 2146:743fa9c74443 dicom-sr tip
integration mainline->dicom-sr
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 16 Aug 2024 18:09:53 +0200 |
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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) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2024 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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28 |
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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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40 |
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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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86 |
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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 { |
1639 | 131 boost::shared_ptr<IViewport> locked = viewport_.lock(); |
132 | |
133 if (locked) | |
134 { | |
135 GrayscaleLayerAccessor accessor(locked, layerIndex_); | |
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136 |
1639 | 137 if (accessor.IsValid()) |
138 { | |
139 FloatTextureSceneLayer& layer = accessor.GetLayer(); | |
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140 |
1639 | 141 layer.GetWindowing(originalCenter_, originalWidth_); |
142 | |
143 float minValue, maxValue; | |
144 layer.GetRange(minValue, maxValue); | |
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145 |
1639 | 146 normalization_ = (maxValue - minValue) / static_cast<double>(std::min(canvasWidth, canvasHeight) - 1); |
147 active_ = true; | |
148 } | |
149 else | |
150 { | |
151 LOG(INFO) << "Cannot create GrayscaleWindowingSceneTracker on a non-float texture"; | |
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 } |