Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2D/GrayscaleWindowingSceneTracker.cpp @ 1720:b8d19f53aaca
display the instance number, and the wc/ww info (work-in-progress)
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 01 Dec 2020 12:13:43 +0100 |
parents | 5cdc5b98f14d |
children | d4a8e2b19a65 |
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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) 2017-2020 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 #include "GrayscaleWindowingSceneTracker.h" |
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24 |
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25 #include "../Scene2DViewport/ViewportController.h" |
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26 #include "FloatTextureSceneLayer.h" |
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27 |
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28 #include <OrthancException.h> |
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29 |
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30 namespace OrthancStone |
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31 { |
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32 namespace |
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33 { |
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34 class GrayscaleLayerAccessor : public boost::noncopyable |
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35 { |
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36 private: |
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37 std::unique_ptr<IViewport::ILock> lock_; |
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38 FloatTextureSceneLayer* layer_; |
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39 |
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40 public: |
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41 GrayscaleLayerAccessor(boost::weak_ptr<IViewport> viewportWeak, |
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42 int layerIndex) : |
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43 layer_(NULL) |
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44 { |
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45 boost::shared_ptr<IViewport> viewport = viewportWeak.lock(); |
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46 if (viewport != NULL) |
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47 { |
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48 lock_.reset(viewport->Lock()); |
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49 |
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50 if (lock_->GetController().GetScene().HasLayer(layerIndex)) |
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51 { |
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52 ISceneLayer& layer = lock_->GetController().GetScene().GetLayer(layerIndex); |
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53 if (layer.GetType() == ISceneLayer::Type_FloatTexture) |
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54 { |
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55 layer_ = &dynamic_cast<FloatTextureSceneLayer&>(layer); |
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56 } |
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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 bool IsValid() const |
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62 { |
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63 return layer_ != NULL; |
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64 } |
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65 |
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66 FloatTextureSceneLayer& GetLayer() const |
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67 { |
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68 if (layer_ == NULL) |
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69 { |
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70 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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71 } |
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72 else |
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73 { |
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74 return *layer_; |
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75 } |
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76 } |
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77 |
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78 void Invalidate() |
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79 { |
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80 if (lock_.get() != NULL) |
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81 { |
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82 lock_->Invalidate(); |
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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 |
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88 void GrayscaleWindowingSceneTracker::SetWindowing(float center, |
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89 float width) |
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90 { |
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91 if (active_) |
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92 { |
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93 boost::shared_ptr<IViewport> viewport = viewport_.lock(); |
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94 GrayscaleLayerAccessor accessor(viewport, layerIndex_); |
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95 |
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96 if (accessor.IsValid()) |
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97 { |
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98 accessor.GetLayer().SetCustomWindowing(center, width); |
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99 accessor.Invalidate(); |
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100 } |
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101 } |
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102 } |
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103 |
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104 |
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105 GrayscaleWindowingSceneTracker::GrayscaleWindowingSceneTracker(boost::weak_ptr<IViewport> viewport, |
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106 int layerIndex, |
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107 const PointerEvent& event, |
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108 unsigned int canvasWidth, |
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109 unsigned int canvasHeight) : |
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110 OneGesturePointerTracker(viewport), |
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111 layerIndex_(layerIndex), |
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112 clickX_(event.GetMainPosition().GetX()), |
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113 clickY_(event.GetMainPosition().GetY()) |
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114 { |
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115 active_ = false; |
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116 |
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117 if (canvasWidth > 3 && |
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118 canvasHeight > 3) |
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119 { |
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122 if (locked) | |
123 { | |
124 GrayscaleLayerAccessor accessor(locked, layerIndex_); | |
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125 |
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128 FloatTextureSceneLayer& layer = accessor.GetLayer(); | |
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129 |
1639 | 130 layer.GetWindowing(originalCenter_, originalWidth_); |
131 | |
132 float minValue, maxValue; | |
133 layer.GetRange(minValue, maxValue); | |
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134 |
1639 | 135 normalization_ = (maxValue - minValue) / static_cast<double>(std::min(canvasWidth, canvasHeight) - 1); |
136 active_ = true; | |
137 } | |
138 else | |
139 { | |
140 LOG(INFO) << "Cannot create GrayscaleWindowingSceneTracker on a non-float texture"; | |
141 } | |
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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 void GrayscaleWindowingSceneTracker::PointerMove(const PointerEvent& event) |
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147 { |
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148 if (active_) |
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149 { |
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150 const double x = event.GetMainPosition().GetX(); |
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151 const double y = event.GetMainPosition().GetY(); |
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152 |
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153 float center = originalCenter_ + static_cast<float>((x - clickX_) * normalization_); |
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154 float width = originalWidth_ + static_cast<float>((y - clickY_) * normalization_); |
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155 |
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156 if (width <= 1) |
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157 { |
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158 width = 1; |
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159 } |
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160 |
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161 SetWindowing(center, width); |
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162 } |
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163 } |
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164 |
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165 void GrayscaleWindowingSceneTracker::Cancel() |
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166 { |
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167 SetWindowing(originalCenter_, originalWidth_); |
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168 } |
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169 } |