Mercurial > hg > orthanc-stone
annotate Samples/WebAssembly/BasicScene.cpp @ 731:ac4fe43551a1
merge am-dev -> default
author | Alain Mazy <alain@mazy.be> |
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date | Tue, 21 May 2019 13:53:57 +0200 |
parents | 419e5662d7a5 |
children | c35e98d22764 6030db24eaea |
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/StoneInitialization.h" |
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36 #include "../../Framework/OpenGL/WebAssemblyOpenGLContext.h" |
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37 |
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38 // From Orthanc framework |
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39 #include <Core/Images/Image.h> |
617 | 40 #include <Core/Logging.h> |
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41 #include <Core/OrthancException.h> |
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42 |
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43 #include <stdio.h> |
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44 |
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45 static const unsigned int FONT_SIZE = 32; |
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46 |
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47 |
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48 void PrepareScene(OrthancStone::Scene2D& scene) |
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49 { |
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50 using namespace OrthancStone; |
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51 |
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52 // Texture of 2x2 size |
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53 if (1) |
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54 { |
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55 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); |
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56 |
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57 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); |
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58 p[0] = 255; |
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59 p[1] = 0; |
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60 p[2] = 0; |
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61 |
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62 p[3] = 0; |
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63 p[4] = 255; |
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64 p[5] = 0; |
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65 |
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66 p = reinterpret_cast<uint8_t*>(i.GetRow(1)); |
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67 p[0] = 0; |
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68 p[1] = 0; |
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69 p[2] = 255; |
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70 |
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71 p[3] = 255; |
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72 p[4] = 0; |
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73 p[5] = 0; |
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74 |
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75 scene.SetLayer(12, new ColorTextureSceneLayer(i)); |
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76 |
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77 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); |
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78 l->SetOrigin(-3, 2); |
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79 l->SetPixelSpacing(1.5, 1); |
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80 l->SetAngle(20.0 / 180.0 * M_PI); |
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81 scene.SetLayer(14, l.release()); |
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82 } |
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83 |
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84 // Texture of 1x1 size |
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85 if (1) |
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86 { |
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87 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); |
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88 |
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89 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); |
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90 p[0] = 255; |
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91 p[1] = 0; |
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92 p[2] = 0; |
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93 |
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94 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); |
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95 l->SetOrigin(-2, 1); |
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96 l->SetAngle(20.0 / 180.0 * M_PI); |
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97 scene.SetLayer(13, l.release()); |
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98 } |
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99 |
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100 // Some lines |
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101 { |
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102 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); |
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103 |
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104 layer->SetThickness(1); |
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105 |
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106 PolylineSceneLayer::Chain chain; |
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107 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); |
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108 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); |
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109 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); |
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110 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); |
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111 layer->AddChain(chain, true); |
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112 |
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113 chain.clear(); |
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114 chain.push_back(ScenePoint2D(-5, -5)); |
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115 chain.push_back(ScenePoint2D(5, -5)); |
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116 chain.push_back(ScenePoint2D(5, 5)); |
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117 chain.push_back(ScenePoint2D(-5, 5)); |
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118 layer->AddChain(chain, true); |
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119 |
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120 double dy = 1.01; |
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121 chain.clear(); |
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122 chain.push_back(ScenePoint2D(-4, -4)); |
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123 chain.push_back(ScenePoint2D(4, -4 + dy)); |
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124 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); |
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125 chain.push_back(ScenePoint2D(4, 2)); |
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126 layer->AddChain(chain, false); |
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127 |
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128 layer->SetColor(0,255, 255); |
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129 scene.SetLayer(50, layer.release()); |
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130 } |
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131 |
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132 // Some text |
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133 if (1) |
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134 { |
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135 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); |
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136 layer->SetText("Hello"); |
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137 scene.SetLayer(100, layer.release()); |
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138 } |
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139 } |
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140 |
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141 |
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142 |
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143 |
617 | 144 namespace OrthancStone |
616
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145 { |
618
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146 class WebAssemblyViewport : public boost::noncopyable |
617 | 147 { |
148 private: | |
149 OpenGL::WebAssemblyOpenGLContext context_; | |
150 Scene2D scene_; | |
151 OpenGLCompositor compositor_; | |
616
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152 |
617 | 153 void SetupEvents(const std::string& canvas); |
154 | |
155 public: | |
665 | 156 WebAssemblyViewport(MessageBroker& broker, |
157 const std::string& canvas) : | |
617 | 158 context_(canvas), |
665 | 159 scene_(broker), |
617 | 160 compositor_(context_, scene_) |
161 { | |
162 compositor_.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, | |
163 FONT_SIZE, Orthanc::Encoding_Latin1); | |
164 SetupEvents(canvas); | |
165 } | |
616
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166 |
617 | 167 Scene2D& GetScene() |
168 { | |
169 return scene_; | |
170 } | |
171 | |
172 void UpdateSize() | |
173 { | |
174 context_.UpdateSize(); | |
175 compositor_.UpdateSize(); | |
176 Refresh(); | |
177 } | |
616
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178 |
617 | 179 void Refresh() |
180 { | |
181 compositor_.Refresh(); | |
182 } | |
616
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183 |
617 | 184 const std::string& GetCanvasIdentifier() const |
185 { | |
186 return context_.GetCanvasIdentifier(); | |
187 } | |
188 | |
189 ScenePoint2D GetPixelCenterCoordinates(int x, int y) const | |
190 { | |
191 return compositor_.GetPixelCenterCoordinates(x, y); | |
192 } | |
618
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193 |
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194 unsigned int GetCanvasWidth() const |
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195 { |
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196 return context_.GetCanvasWidth(); |
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197 } |
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198 |
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199 unsigned int GetCanvasHeight() const |
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200 { |
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201 return context_.GetCanvasHeight(); |
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202 } |
617 | 203 }; |
616
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204 |
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205 |
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206 |
617 | 207 class ActiveTracker : public boost::noncopyable |
208 { | |
209 private: | |
210 std::auto_ptr<IPointerTracker> tracker_; | |
211 std::string canvasIdentifier_; | |
212 bool insideCanvas_; | |
213 | |
214 public: | |
215 ActiveTracker(IPointerTracker* tracker, | |
618
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216 const WebAssemblyViewport& viewport) : |
617 | 217 tracker_(tracker), |
618
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218 canvasIdentifier_(viewport.GetCanvasIdentifier()), |
617 | 219 insideCanvas_(true) |
220 { | |
618
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221 if (tracker_.get() == NULL) |
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222 { |
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223 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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224 } |
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225 } |
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226 |
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227 void Update(const PointerEvent& event) |
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228 { |
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229 tracker_->Update(event); |
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230 } |
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231 |
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232 void Release() |
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233 { |
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234 tracker_->Release(); |
617 | 235 } |
236 }; | |
237 } | |
238 | |
239 | |
240 | |
241 static OrthancStone::PointerEvent* ConvertMouseEvent(const EmscriptenMouseEvent& source, | |
618
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242 OrthancStone::WebAssemblyViewport& viewport) |
617 | 243 { |
244 std::auto_ptr<OrthancStone::PointerEvent> target(new OrthancStone::PointerEvent); | |
245 | |
618
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246 target->AddPosition(viewport.GetPixelCenterCoordinates(source.targetX, source.targetY)); |
617 | 247 target->SetAltModifier(source.altKey); |
248 target->SetControlModifier(source.ctrlKey); | |
249 target->SetShiftModifier(source.shiftKey); | |
250 | |
251 return target.release(); | |
252 } | |
253 | |
254 | |
618
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255 std::auto_ptr<OrthancStone::ActiveTracker> tracker_; |
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256 |
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257 |
617 | 258 EM_BOOL OnMouseEvent(int eventType, |
259 const EmscriptenMouseEvent *mouseEvent, | |
260 void *userData) | |
261 { | |
618
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262 if (mouseEvent != NULL && |
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263 userData != NULL) |
617 | 264 { |
618
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265 OrthancStone::WebAssemblyViewport& viewport = |
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266 *reinterpret_cast<OrthancStone::WebAssemblyViewport*>(userData); |
617 | 267 |
268 switch (eventType) | |
269 { | |
270 case EMSCRIPTEN_EVENT_CLICK: | |
271 { | |
272 static unsigned int count = 0; | |
273 char buf[64]; | |
274 sprintf(buf, "click %d", count++); | |
275 | |
276 std::auto_ptr<OrthancStone::TextSceneLayer> layer(new OrthancStone::TextSceneLayer); | |
277 layer->SetText(buf); | |
618
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278 viewport.GetScene().SetLayer(100, layer.release()); |
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279 viewport.Refresh(); |
617 | 280 break; |
281 } | |
282 | |
283 case EMSCRIPTEN_EVENT_MOUSEDOWN: | |
618
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284 { |
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285 std::auto_ptr<OrthancStone::IPointerTracker> t; |
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286 |
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287 { |
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288 std::auto_ptr<OrthancStone::PointerEvent> event(ConvertMouseEvent(*mouseEvent, viewport)); |
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289 |
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290 switch (mouseEvent->button) |
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291 { |
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292 case 0: // Left button |
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293 t.reset(new OrthancStone::RotateSceneTracker(viewport.GetScene(), *event)); |
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294 break; |
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295 |
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296 case 1: // Middle button |
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297 t.reset(new OrthancStone::PanSceneTracker(viewport.GetScene(), *event)); |
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298 break; |
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299 |
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300 case 2: // Right button |
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301 t.reset(new OrthancStone::ZoomSceneTracker |
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302 (viewport.GetScene(), *event, viewport.GetCanvasWidth())); |
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303 break; |
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304 |
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305 default: |
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306 break; |
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307 } |
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308 } |
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309 |
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310 if (t.get() != NULL) |
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311 { |
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312 tracker_.reset(new OrthancStone::ActiveTracker(t.release(), viewport)); |
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313 viewport.Refresh(); |
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314 } |
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315 |
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316 break; |
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317 } |
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318 |
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319 case EMSCRIPTEN_EVENT_MOUSEMOVE: |
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320 if (tracker_.get() != NULL) |
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321 { |
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322 std::auto_ptr<OrthancStone::PointerEvent> event(ConvertMouseEvent(*mouseEvent, viewport)); |
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323 tracker_->Update(*event); |
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324 viewport.Refresh(); |
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325 } |
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326 break; |
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327 |
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328 case EMSCRIPTEN_EVENT_MOUSEUP: |
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329 if (tracker_.get() != NULL) |
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330 { |
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331 tracker_->Release(); |
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332 viewport.Refresh(); |
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333 tracker_.reset(); |
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334 } |
617 | 335 break; |
336 | |
337 default: | |
338 break; | |
339 } | |
340 } | |
341 | |
342 return true; | |
343 } | |
344 | |
345 | |
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346 void OrthancStone::WebAssemblyViewport::SetupEvents(const std::string& canvas) |
617 | 347 { |
631 | 348 if (0) |
349 { | |
350 emscripten_set_click_callback(canvas.c_str(), this, false, OnMouseEvent); | |
351 } | |
352 else | |
353 { | |
354 emscripten_set_mousedown_callback(canvas.c_str(), this, false, OnMouseEvent); | |
355 emscripten_set_mousemove_callback(canvas.c_str(), this, false, OnMouseEvent); | |
356 emscripten_set_mouseup_callback(canvas.c_str(), this, false, OnMouseEvent); | |
357 } | |
617 | 358 } |
359 | |
360 | |
361 | |
362 | |
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363 std::auto_ptr<OrthancStone::WebAssemblyViewport> viewport1_; |
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364 std::auto_ptr<OrthancStone::WebAssemblyViewport> viewport2_; |
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365 std::auto_ptr<OrthancStone::WebAssemblyViewport> viewport3_; |
665 | 366 OrthancStone::MessageBroker broker_; |
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367 |
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368 |
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369 EM_BOOL OnWindowResize(int eventType, const EmscriptenUiEvent *uiEvent, void *userData) |
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370 { |
618
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371 if (viewport1_.get() != NULL) |
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372 { |
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373 viewport1_->UpdateSize(); |
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374 } |
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375 |
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376 if (viewport2_.get() != NULL) |
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377 { |
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378 viewport2_->UpdateSize(); |
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379 } |
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380 |
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381 if (viewport3_.get() != NULL) |
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382 { |
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383 viewport3_->UpdateSize(); |
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384 } |
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385 |
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386 return true; |
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387 } |
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388 |
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389 |
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390 |
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391 extern "C" |
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392 { |
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393 int main(int argc, char const *argv[]) |
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394 { |
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395 OrthancStone::StoneInitialize(); |
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396 EM_ASM(window.dispatchEvent(new CustomEvent("WebAssemblyLoaded"));); |
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397 } |
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398 |
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399 EMSCRIPTEN_KEEPALIVE |
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400 void Initialize() |
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401 { |
665 | 402 viewport1_.reset(new OrthancStone::WebAssemblyViewport(broker_, "mycanvas1")); |
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403 PrepareScene(viewport1_->GetScene()); |
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404 viewport1_->UpdateSize(); |
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405 |
665 | 406 viewport2_.reset(new OrthancStone::WebAssemblyViewport(broker_, "mycanvas2")); |
618
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407 PrepareScene(viewport2_->GetScene()); |
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408 viewport2_->UpdateSize(); |
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409 |
665 | 410 viewport3_.reset(new OrthancStone::WebAssemblyViewport(broker_, "mycanvas3")); |
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411 PrepareScene(viewport3_->GetScene()); |
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412 viewport3_->UpdateSize(); |
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413 |
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414 emscripten_set_resize_callback("#window", NULL, false, OnWindowResize); |
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415 } |
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416 } |