annotate Samples/Common/RtViewer.h @ 1386:dfb48f0794b1

Ongoing splitting SDL vs WASM (preparing RtViewer WASM)
author Benjamin Golinvaux <bgo@osimis.io>
date Mon, 27 Apr 2020 16:48:19 +0200
parents ab871499ed30
children 27e0a00bd3e8
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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 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 #include <Framework/Viewport/SdlViewport.h>
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22 #include <Framework/Loaders/GenericLoadersContext.h>
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23 #include <Framework/Messages/IObserver.h>
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24 #include <Framework/Messages/IMessageEmitter.h>
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25 #include <Framework/Oracle/OracleCommandExceptionMessage.h>
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26 #include <Framework/Scene2DViewport/ViewportController.h>
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27 #include <Framework/Volumes/DicomVolumeImage.h>
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28 #include <Framework/Oracle/ThreadedOracle.h>
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29 #include <Framework/Loaders/OrthancSeriesVolumeProgressiveLoader.h>
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30 #include <Framework/Loaders/OrthancMultiframeVolumeLoader.h>
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31 #include <Framework/Loaders/DicomStructureSetLoader.h>
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32
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33 #include <Framework/Messages/ObserverBase.h>
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34
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35 #include <boost/enable_shared_from_this.hpp>
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36 #include <boost/thread.hpp>
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37 #include <boost/noncopyable.hpp>
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38
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39 #if ORTHANC_ENABLE_SDL
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40 #include <SDL.h>
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41 #endif
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42
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43 namespace OrthancStone
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44 {
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45 class OpenGLCompositor;
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46 class IVolumeSlicer;
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47 class ILayerStyleConfigurator;
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48 class DicomStructureSetLoader;
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49 class IOracle;
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50 class ThreadedOracle;
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51 class VolumeSceneLayerSource;
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52 class SdlOpenGLViewport;
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53
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54 enum RtViewerGuiTool
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55 {
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56 RtViewerGuiTool_Rotate = 0,
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57 RtViewerGuiTool_Pan,
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58 RtViewerGuiTool_Zoom,
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59 RtViewerGuiTool_LineMeasure,
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60 RtViewerGuiTool_CircleMeasure,
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61 RtViewerGuiTool_AngleMeasure,
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62 RtViewerGuiTool_EllipseMeasure,
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63 RtViewerGuiTool_LAST
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64 };
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65
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66 const char* MeasureToolToString(size_t i);
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67
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68 static const unsigned int FONT_SIZE_0 = 32;
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69 static const unsigned int FONT_SIZE_1 = 24;
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70
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71 class Scene2D;
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72 class UndoStack;
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73
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74 /**
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75 This application subclasses IMessageEmitter to use a mutex before forwarding Oracle messages (that
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76 can be sent from multiple threads)
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77 */
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78 class RtViewerApp : public ObserverBase<RtViewerApp>
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79 {
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80 public:
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81
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82 void PrepareScene();
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83
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84 #if ORTHANC_ENABLE_SDL
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85 public:
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86 void RunSdl(int argc, char* argv[]);
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87 private:
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88 void ProcessOptions(int argc, char* argv[]);
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89 void HandleApplicationEvent(const SDL_Event& event);
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90 #elif ORTHANC_ENABLE_WASM
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91 #endif
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92
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93 public:
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94 void SetInfoDisplayMessage(std::string key, std::string value);
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95 void DisableTracker();
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96
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97 /**
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98 This method is called when the scene transform changes. It allows to
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99 recompute the visual elements whose content depend upon the scene transform
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100 */
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101 void OnSceneTransformChanged(
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102 const ViewportController::SceneTransformChanged& message);
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103
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104 /**
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105 This method will ask the VolumeSceneLayerSource, that are responsible to
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106 generated 2D content based on a volume and a cutting plane, to regenerate
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107 it. This is required if the volume itself changes (during loading) or if
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108 the cutting plane is changed
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109 */
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110 void UpdateLayers();
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111
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112 void Refresh();
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113
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114 #if 0
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115 virtual void EmitMessage(boost::weak_ptr<IObserver> observer,
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116 const IMessage& message) ORTHANC_OVERRIDE
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117 {
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118 try
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119 {
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120 boost::unique_lock<boost::shared_mutex> lock(mutex_);
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121 oracleObservable_.EmitMessage(observer, message);
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122 }
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123 catch (Orthanc::OrthancException& e)
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124 {
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125 LOG(ERROR) << "Exception while emitting a message: " << e.What();
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126 throw;
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127 }
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128 }
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129 #endif
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130
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131 static boost::shared_ptr<RtViewerApp> Create();
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132 void RegisterMessages();
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133
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134 protected:
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135 RtViewerApp();
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136
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137 private:
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138 void PrepareLoadersAndSlicers();
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139
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140 /**
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141 Url of the Orthanc instance
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142 Typically, in a native application (Qt, SDL), it will be an absolute URL like "http://localhost:8042". In
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143 wasm on the browser, it could be an absolute URL, provided you do not have cross-origin problems, or a relative
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144 URL. In our wasm samples, it is set to "..", because we set up either a reverse proxy or an Orthanc ServeFolders
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145 plugin that serves the main web application from an URL like "http://localhost:8042/rtviewer" (with ".." leading
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146 to the main Orthanc root URL)
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147 */
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148 std::string orthancUrl_;
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149
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150 /**
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151 Orthanc ID of the CT series to load. Only used between startup and loading time.
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152 */
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153 std::string ctSeriesId_;
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154
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155 /**
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156 Orthanc ID of the RTDOSE instance to load. Only used between startup and loading time.
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157 */
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158 std::string doseInstanceId_;
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159
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160 /**
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161 Orthanc ID of the RTSTRUCT instance to load. Only used between startup and loading time.
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162 */
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163 std::string rtStructInstanceId_;
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164
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165
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166 #if ORTHANC_ENABLE_SDL
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167 // if threaded (not wasm)
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168 //IObservable oracleObservable_;
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169 //ThreadedOracle oracle_;
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170 //boost::shared_mutex mutex_; // to serialize messages from the ThreadedOracle
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171 #elif ORTHANC_ENABLE_WASM
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172
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173
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174 #endif
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175
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176 void SelectNextTool();
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177
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178 /**
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179 This returns a random point in the canvas part of the scene, but in
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180 scene coordinates
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181 */
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182 ScenePoint2D GetRandomPointInScene() const;
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183
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184 boost::shared_ptr<IFlexiblePointerTracker> TrackerHitTest(const PointerEvent& e);
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185
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186 boost::shared_ptr<IFlexiblePointerTracker> CreateSuitableTracker(
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187 const SDL_Event& event,
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188 const PointerEvent& e);
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189
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190 void TakeScreenshot(
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191 const std::string& target,
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192 unsigned int canvasWidth,
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193 unsigned int canvasHeight);
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194
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195 /**
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196 This adds the command at the top of the undo stack
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197 */
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198 //void Commit(boost::shared_ptr<TrackerCommand> cmd);
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199 void Undo();
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200 void Redo();
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201
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202
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203 void HandleGeometryReady(const DicomVolumeImage::GeometryReadyMessage& message);
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204
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205 // TODO: wire this
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206 void HandleCTLoaded(const OrthancSeriesVolumeProgressiveLoader::VolumeImageReadyInHighQuality& message);
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207 void HandleCTContentUpdated(const OrthancStone::DicomVolumeImage::ContentUpdatedMessage& message);
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208 void HandleDoseLoaded(const OrthancStone::DicomVolumeImage::ContentUpdatedMessage& message);
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209 void HandleStructuresReady(const OrthancStone::DicomStructureSetLoader::StructuresReady& message);
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210 void HandleStructuresUpdated(const OrthancStone::DicomStructureSetLoader::StructuresUpdated& message);
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211
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212 void SetCtVolumeSlicer(
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213 int depth,
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214 const boost::shared_ptr<IVolumeSlicer>& volume,
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215 ILayerStyleConfigurator* style);
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216
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217 void SetDoseVolumeSlicer(
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218 int depth,
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219 const boost::shared_ptr<IVolumeSlicer>& volume,
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220 ILayerStyleConfigurator* style);
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221
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222 void SetStructureSet(
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223 int depth,
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224 const boost::shared_ptr<DicomStructureSetLoader>& volume);
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225
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226 private:
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227 void DisplayFloatingCtrlInfoText(const PointerEvent& e);
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228 void DisplayInfoText();
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229 void HideInfoText();
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230 void RetrieveGeometry();
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231 void FitContent();
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232
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233 private:
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234 boost::shared_ptr<DicomVolumeImage> ctVolume_;
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235 boost::shared_ptr<DicomVolumeImage> doseVolume_;
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236
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237 boost::shared_ptr<OrthancSeriesVolumeProgressiveLoader> ctLoader_;
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238 boost::shared_ptr<OrthancMultiframeVolumeLoader> doseLoader_;
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239 boost::shared_ptr<DicomStructureSetLoader> rtstructLoader_;
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240
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241 /** encapsulates resources shared by loaders */
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242 boost::shared_ptr<GenericLoadersContext> loadersContext_;
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243 boost::shared_ptr<VolumeSceneLayerSource> ctVolumeLayerSource_, doseVolumeLayerSource_, structLayerSource_;
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244
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245 /**
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246 another interface to the ctLoader object (that also implements the IVolumeSlicer interface), that serves as the
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247 reference for the geometry (position and dimensions of the volume + size of each voxel). It could be changed to be
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248 the dose instead, but the CT is chosen because it usually has a better spatial resolution.
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249 */
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250 boost::shared_ptr<OrthancStone::IGeometryProvider> geometryProvider_;
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251
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252 // collection of cutting planes for this particular view
1383
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253 std::vector<OrthancStone::CoordinateSystem3D> planes_;
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254 size_t currentPlane_;
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255
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256 VolumeProjection projection_;
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257
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258 std::map<std::string, std::string> infoTextMap_;
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259 boost::shared_ptr<IFlexiblePointerTracker> activeTracker_;
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260
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261 static const int LAYER_POSITION = 150;
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262
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263 int TEXTURE_2x2_1_ZINDEX;
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264 int TEXTURE_1x1_ZINDEX;
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265 int TEXTURE_2x2_2_ZINDEX;
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266 int LINESET_1_ZINDEX;
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267 int LINESET_2_ZINDEX;
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268 int FLOATING_INFOTEXT_LAYER_ZINDEX;
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269 int FIXED_INFOTEXT_LAYER_ZINDEX;
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270
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271 RtViewerGuiTool currentTool_;
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272 boost::shared_ptr<UndoStack> undoStack_;
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273 boost::shared_ptr<SdlOpenGLViewport> viewport_;
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274 };
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275
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276 }
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277
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278
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279