Mercurial > hg > orthanc-stone
annotate Samples/WebAssembly/BasicScene.cpp @ 820:270c31978df1
BasicMPR sample
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 29 May 2019 13:40:07 +0200 |
parents | 46403ab629f6 |
children | 2de01660debe |
rev | line source |
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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) 2017-2019 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 |
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23 #include <emscripten.h> |
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24 #include <emscripten/html5.h> |
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25 |
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26 // From Stone |
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27 #include "../../Applications/Sdl/SdlOpenGLWindow.h" |
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28 #include "../../Framework/Scene2D/CairoCompositor.h" |
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29 #include "../../Framework/Scene2D/ColorTextureSceneLayer.h" |
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30 #include "../../Framework/Scene2D/OpenGLCompositor.h" |
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31 #include "../../Framework/Scene2D/PanSceneTracker.h" |
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32 #include "../../Framework/Scene2D/RotateSceneTracker.h" |
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33 #include "../../Framework/Scene2D/Scene2D.h" |
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34 #include "../../Framework/Scene2D/ZoomSceneTracker.h" |
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35 #include "../../Framework/Scene2DViewport/ViewportController.h" |
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36 #include "../../Framework/StoneInitialization.h" |
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37 #include "../../Framework/OpenGL/WebAssemblyOpenGLContext.h" |
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38 |
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39 // From Orthanc framework |
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40 #include <Core/Images/Image.h> |
617 | 41 #include <Core/Logging.h> |
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42 #include <Core/OrthancException.h> |
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43 |
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44 #include <boost/make_shared.hpp> |
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45 |
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46 #include <stdio.h> |
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47 |
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48 static const unsigned int FONT_SIZE = 32; |
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49 |
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50 using boost::shared_ptr; |
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51 using boost::make_shared; |
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52 |
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53 void PrepareScene(OrthancStone::Scene2DPtr scene) |
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54 { |
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55 using namespace OrthancStone; |
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56 |
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57 // Texture of 2x2 size |
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58 if (1) |
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59 { |
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60 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); |
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61 |
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62 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); |
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63 p[0] = 255; |
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64 p[1] = 0; |
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65 p[2] = 0; |
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66 |
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67 p[3] = 0; |
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68 p[4] = 255; |
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69 p[5] = 0; |
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70 |
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71 p = reinterpret_cast<uint8_t*>(i.GetRow(1)); |
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72 p[0] = 0; |
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73 p[1] = 0; |
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74 p[2] = 255; |
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75 |
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76 p[3] = 255; |
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77 p[4] = 0; |
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78 p[5] = 0; |
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79 |
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80 scene->SetLayer(12, new ColorTextureSceneLayer(i)); |
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81 |
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82 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); |
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83 l->SetOrigin(-3, 2); |
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84 l->SetPixelSpacing(1.5, 1); |
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85 l->SetAngle(20.0 / 180.0 * M_PI); |
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86 scene->SetLayer(14, l.release()); |
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87 } |
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88 |
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89 // Texture of 1x1 size |
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90 if (1) |
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91 { |
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92 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); |
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93 |
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94 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); |
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95 p[0] = 255; |
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96 p[1] = 0; |
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97 p[2] = 0; |
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98 |
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99 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); |
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100 l->SetOrigin(-2, 1); |
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101 l->SetAngle(20.0 / 180.0 * M_PI); |
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102 scene->SetLayer(13, l.release()); |
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103 } |
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104 |
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105 // Some lines |
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106 { |
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107 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); |
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108 |
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109 layer->SetThickness(1); |
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110 |
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111 PolylineSceneLayer::Chain chain; |
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112 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); |
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113 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); |
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114 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); |
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115 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); |
820 | 116 layer->AddChain(chain, true, 255, 0, 0); |
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117 |
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118 chain.clear(); |
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119 chain.push_back(ScenePoint2D(-5, -5)); |
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120 chain.push_back(ScenePoint2D(5, -5)); |
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121 chain.push_back(ScenePoint2D(5, 5)); |
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122 chain.push_back(ScenePoint2D(-5, 5)); |
820 | 123 layer->AddChain(chain, true, 0, 255, 0); |
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124 |
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125 double dy = 1.01; |
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126 chain.clear(); |
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127 chain.push_back(ScenePoint2D(-4, -4)); |
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128 chain.push_back(ScenePoint2D(4, -4 + dy)); |
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129 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); |
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130 chain.push_back(ScenePoint2D(4, 2)); |
820 | 131 layer->AddChain(chain, false, 0, 0, 255); |
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132 |
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133 scene->SetLayer(50, layer.release()); |
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134 } |
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135 |
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136 // Some text |
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137 if (1) |
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138 { |
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139 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); |
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140 layer->SetText("Hello"); |
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141 scene->SetLayer(100, layer.release()); |
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142 } |
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143 } |
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144 |
617 | 145 namespace OrthancStone |
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146 { |
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147 class WebAssemblyViewport : public boost::noncopyable |
617 | 148 { |
149 private: | |
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150 // the construction order is important because compositor_ |
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151 // will hold a reference to the scene that belong to the |
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152 // controller_ object |
617 | 153 OpenGL::WebAssemblyOpenGLContext context_; |
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154 ViewportControllerPtr controller_; |
617 | 155 OpenGLCompositor compositor_; |
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156 |
617 | 157 void SetupEvents(const std::string& canvas); |
158 | |
159 public: | |
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160 WebAssemblyViewport(MessageBroker& broker, const std::string& canvas) : |
617 | 161 context_(canvas), |
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162 controller_(make_shared<ViewportController>(broker)), |
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163 compositor_(context_, *controller_->GetScene()) |
617 | 164 { |
165 compositor_.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, | |
166 FONT_SIZE, Orthanc::Encoding_Latin1); | |
167 SetupEvents(canvas); | |
168 } | |
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169 |
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170 Scene2DPtr GetScene() |
617 | 171 { |
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172 return controller_->GetScene(); |
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173 } |
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174 |
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175 ViewportControllerPtr GetController() |
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176 { |
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177 return controller_; |
617 | 178 } |
179 | |
180 void UpdateSize() | |
181 { | |
182 context_.UpdateSize(); | |
183 compositor_.UpdateSize(); | |
184 Refresh(); | |
185 } | |
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186 |
617 | 187 void Refresh() |
188 { | |
189 compositor_.Refresh(); | |
190 } | |
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191 |
617 | 192 const std::string& GetCanvasIdentifier() const |
193 { | |
194 return context_.GetCanvasIdentifier(); | |
195 } | |
196 | |
197 ScenePoint2D GetPixelCenterCoordinates(int x, int y) const | |
198 { | |
199 return compositor_.GetPixelCenterCoordinates(x, y); | |
200 } | |
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201 |
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202 unsigned int GetCanvasWidth() const |
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203 { |
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204 return context_.GetCanvasWidth(); |
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205 } |
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206 |
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207 unsigned int GetCanvasHeight() const |
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208 { |
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209 return context_.GetCanvasHeight(); |
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210 } |
617 | 211 }; |
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212 |
617 | 213 class ActiveTracker : public boost::noncopyable |
214 { | |
215 private: | |
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216 OrthancStone::FlexiblePointerTrackerPtr tracker_; |
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217 std::string canvasIdentifier_; |
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218 bool insideCanvas_; |
617 | 219 |
220 public: | |
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221 ActiveTracker(FlexiblePointerTrackerPtr tracker, |
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222 const WebAssemblyViewport& viewport) : |
617 | 223 tracker_(tracker), |
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224 canvasIdentifier_(viewport.GetCanvasIdentifier()), |
617 | 225 insideCanvas_(true) |
226 { | |
618
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227 if (tracker_.get() == NULL) |
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228 { |
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229 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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230 } |
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231 } |
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232 |
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233 bool IsAlive() const |
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234 { |
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235 return tracker_->IsAlive(); |
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236 } |
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237 |
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238 void PointerMove(const PointerEvent& event) |
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239 { |
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240 tracker_->PointerMove(event); |
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241 } |
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242 |
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243 void PointerUp(const PointerEvent& event) |
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244 { |
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245 tracker_->PointerUp(event); |
617 | 246 } |
247 }; | |
248 } | |
249 | |
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250 static OrthancStone::PointerEvent* ConvertMouseEvent( |
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251 const EmscriptenMouseEvent& source, |
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252 OrthancStone::WebAssemblyViewport& viewport) |
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253 { |
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254 std::auto_ptr<OrthancStone::PointerEvent> target( |
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255 new OrthancStone::PointerEvent); |
617 | 256 |
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257 target->AddPosition(viewport.GetPixelCenterCoordinates( |
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258 source.targetX, source.targetY)); |
617 | 259 target->SetAltModifier(source.altKey); |
260 target->SetControlModifier(source.ctrlKey); | |
261 target->SetShiftModifier(source.shiftKey); | |
262 | |
263 return target.release(); | |
264 } | |
265 | |
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266 std::auto_ptr<OrthancStone::ActiveTracker> tracker_; |
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267 |
617 | 268 EM_BOOL OnMouseEvent(int eventType, |
269 const EmscriptenMouseEvent *mouseEvent, | |
270 void *userData) | |
271 { | |
618
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272 if (mouseEvent != NULL && |
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273 userData != NULL) |
617 | 274 { |
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275 OrthancStone::WebAssemblyViewport& viewport = |
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276 *reinterpret_cast<OrthancStone::WebAssemblyViewport*>(userData); |
617 | 277 |
278 switch (eventType) | |
279 { | |
280 case EMSCRIPTEN_EVENT_CLICK: | |
281 { | |
282 static unsigned int count = 0; | |
283 char buf[64]; | |
284 sprintf(buf, "click %d", count++); | |
285 | |
286 std::auto_ptr<OrthancStone::TextSceneLayer> layer(new OrthancStone::TextSceneLayer); | |
287 layer->SetText(buf); | |
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288 viewport.GetScene()->SetLayer(100, layer.release()); |
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289 viewport.Refresh(); |
617 | 290 break; |
291 } | |
292 | |
293 case EMSCRIPTEN_EVENT_MOUSEDOWN: | |
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294 { |
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295 OrthancStone::FlexiblePointerTrackerPtr t; |
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296 |
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297 { |
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298 std::auto_ptr<OrthancStone::PointerEvent> event( |
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299 ConvertMouseEvent(*mouseEvent, viewport)); |
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300 |
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301 switch (mouseEvent->button) |
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302 { |
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303 case 0: // Left button |
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304 emscripten_console_log("Creating RotateSceneTracker"); |
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305 t.reset(new OrthancStone::RotateSceneTracker( |
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306 viewport.GetController(), *event)); |
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307 break; |
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308 |
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309 case 1: // Middle button |
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310 emscripten_console_log("Creating PanSceneTracker"); |
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311 LOG(INFO) << "Creating PanSceneTracker" ; |
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312 t.reset(new OrthancStone::PanSceneTracker( |
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313 viewport.GetController(), *event)); |
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314 break; |
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315 |
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316 case 2: // Right button |
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317 emscripten_console_log("Creating ZoomSceneTracker"); |
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318 t.reset(new OrthancStone::ZoomSceneTracker( |
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319 viewport.GetController(), *event, viewport.GetCanvasWidth())); |
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320 break; |
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321 |
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322 default: |
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323 break; |
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324 } |
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325 } |
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326 |
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327 if (t.get() != NULL) |
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328 { |
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329 tracker_.reset( |
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330 new OrthancStone::ActiveTracker(t, viewport)); |
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331 viewport.Refresh(); |
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332 } |
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333 |
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334 break; |
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335 } |
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336 |
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337 case EMSCRIPTEN_EVENT_MOUSEMOVE: |
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338 if (tracker_.get() != NULL) |
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339 { |
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340 std::auto_ptr<OrthancStone::PointerEvent> event( |
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341 ConvertMouseEvent(*mouseEvent, viewport)); |
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342 tracker_->PointerMove(*event); |
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343 viewport.Refresh(); |
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344 } |
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345 break; |
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346 |
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347 case EMSCRIPTEN_EVENT_MOUSEUP: |
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348 if (tracker_.get() != NULL) |
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349 { |
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350 std::auto_ptr<OrthancStone::PointerEvent> event( |
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351 ConvertMouseEvent(*mouseEvent, viewport)); |
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352 tracker_->PointerUp(*event); |
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353 viewport.Refresh(); |
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354 if (!tracker_->IsAlive()) |
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355 tracker_.reset(); |
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356 } |
617 | 357 break; |
358 | |
359 default: | |
360 break; | |
361 } | |
362 } | |
363 | |
364 return true; | |
365 } | |
366 | |
367 | |
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368 void OrthancStone::WebAssemblyViewport::SetupEvents(const std::string& canvas) |
617 | 369 { |
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370 #if 0 |
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371 emscripten_set_click_callback(canvas.c_str(), this, false, OnMouseEvent); |
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372 #else |
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373 emscripten_set_mousedown_callback(canvas.c_str(), this, false, OnMouseEvent); |
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374 emscripten_set_mousemove_callback(canvas.c_str(), this, false, OnMouseEvent); |
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375 emscripten_set_mouseup_callback(canvas.c_str(), this, false, OnMouseEvent); |
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376 #endif |
617 | 377 } |
378 | |
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379 std::auto_ptr<OrthancStone::WebAssemblyViewport> viewport1_; |
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380 std::auto_ptr<OrthancStone::WebAssemblyViewport> viewport2_; |
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381 std::auto_ptr<OrthancStone::WebAssemblyViewport> viewport3_; |
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382 OrthancStone::MessageBroker broker_; |
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383 |
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384 EM_BOOL OnWindowResize( |
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385 int eventType, const EmscriptenUiEvent *uiEvent, void *userData) |
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386 { |
618
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387 if (viewport1_.get() != NULL) |
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388 { |
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389 viewport1_->UpdateSize(); |
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390 } |
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391 |
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392 if (viewport2_.get() != NULL) |
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393 { |
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394 viewport2_->UpdateSize(); |
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395 } |
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396 |
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397 if (viewport3_.get() != NULL) |
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398 { |
618
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399 viewport3_->UpdateSize(); |
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400 } |
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401 |
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402 return true; |
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403 } |
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404 |
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405 extern "C" |
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406 { |
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407 int main(int argc, char const *argv[]) |
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408 { |
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409 OrthancStone::StoneInitialize(); |
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410 // Orthanc::Logging::EnableInfoLevel(true); |
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411 // Orthanc::Logging::EnableTraceLevel(true); |
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412 EM_ASM(window.dispatchEvent(new CustomEvent("WebAssemblyLoaded"));); |
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413 } |
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414 |
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415 EMSCRIPTEN_KEEPALIVE |
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416 void Initialize() |
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417 { |
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418 viewport1_.reset( |
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419 new OrthancStone::WebAssemblyViewport(broker_, "mycanvas1")); |
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420 PrepareScene(viewport1_->GetScene()); |
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421 viewport1_->UpdateSize(); |
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422 |
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423 viewport2_.reset( |
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424 new OrthancStone::WebAssemblyViewport(broker_, "mycanvas2")); |
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425 PrepareScene(viewport2_->GetScene()); |
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426 viewport2_->UpdateSize(); |
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427 |
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428 viewport3_.reset( |
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429 new OrthancStone::WebAssemblyViewport(broker_, "mycanvas3")); |
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430 PrepareScene(viewport3_->GetScene()); |
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431 viewport3_->UpdateSize(); |
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432 |
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433 emscripten_set_resize_callback("#window", NULL, false, OnWindowResize); |
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434 } |
97926984d5d0
WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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changeset
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