Mercurial > hg > orthanc-stone
annotate Samples/Sdl/BasicScene.cpp @ 721:af0aa0c149fa
FitContent is now wrapped by the controller (for observability)
| author | Benjamin Golinvaux <bgo@osimis.io> |
|---|---|
| date | Mon, 20 May 2019 12:49:29 +0200 |
| parents | f2ee003ba955 |
| children | 61ba4b504e9a |
| rev | line source |
|---|---|
| 600 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 // From Stone | |
| 23 #include "../../Applications/Sdl/SdlOpenGLWindow.h" | |
| 24 #include "../../Framework/Scene2D/CairoCompositor.h" | |
|
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25 #include "../../Framework/Scene2D/ColorTextureSceneLayer.h" |
| 600 | 26 #include "../../Framework/Scene2D/OpenGLCompositor.h" |
| 27 #include "../../Framework/Scene2D/PanSceneTracker.h" | |
| 28 #include "../../Framework/Scene2D/RotateSceneTracker.h" | |
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29 #include "../../Framework/Scene2D/Scene2D.h" |
| 600 | 30 #include "../../Framework/Scene2D/ZoomSceneTracker.h" |
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31 #include "../../Framework/Scene2DViewport/ViewportController.h" |
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32 |
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33 #include "../../Framework/StoneInitialization.h" |
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34 #include "../../Framework/Messages/MessageBroker.h" |
| 600 | 35 |
| 36 // From Orthanc framework | |
| 37 #include <Core/Logging.h> | |
| 38 #include <Core/OrthancException.h> | |
| 39 #include <Core/Images/Image.h> | |
| 40 #include <Core/Images/ImageProcessing.h> | |
| 41 #include <Core/Images/PngWriter.h> | |
| 42 | |
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43 #include <boost/make_shared.hpp> |
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44 #include <boost/ref.hpp> |
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45 |
| 600 | 46 #include <SDL.h> |
| 47 #include <stdio.h> | |
| 48 | |
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49 static const unsigned int FONT_SIZE = 32; |
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50 static const int LAYER_POSITION = 150; |
| 600 | 51 |
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52 using namespace OrthancStone; |
| 600 | 53 |
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54 void PrepareScene(ViewportControllerPtr controller) |
| 600 | 55 { |
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56 Scene2D& scene(*controller->GetScene()); |
| 600 | 57 // Texture of 2x2 size |
| 58 { | |
| 59 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); | |
| 60 | |
| 61 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
| 62 p[0] = 255; | |
| 63 p[1] = 0; | |
| 64 p[2] = 0; | |
| 65 | |
| 66 p[3] = 0; | |
| 67 p[4] = 255; | |
| 68 p[5] = 0; | |
| 69 | |
| 70 p = reinterpret_cast<uint8_t*>(i.GetRow(1)); | |
| 71 p[0] = 0; | |
| 72 p[1] = 0; | |
| 73 p[2] = 255; | |
| 74 | |
| 75 p[3] = 255; | |
| 76 p[4] = 0; | |
| 77 p[5] = 0; | |
| 78 | |
| 79 scene.SetLayer(12, new ColorTextureSceneLayer(i)); | |
| 80 | |
| 81 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
| 82 l->SetOrigin(-3, 2); | |
| 83 l->SetPixelSpacing(1.5, 1); | |
| 84 l->SetAngle(20.0 / 180.0 * M_PI); | |
| 85 scene.SetLayer(14, l.release()); | |
| 86 } | |
| 87 | |
| 88 // Texture of 1x1 size | |
| 89 { | |
| 90 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); | |
| 91 | |
| 92 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
| 93 p[0] = 255; | |
| 94 p[1] = 0; | |
| 95 p[2] = 0; | |
| 96 | |
| 97 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
| 98 l->SetOrigin(-2, 1); | |
| 99 l->SetAngle(20.0 / 180.0 * M_PI); | |
| 100 scene.SetLayer(13, l.release()); | |
| 101 } | |
| 102 | |
| 103 // Some lines | |
| 104 { | |
| 105 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); | |
| 106 | |
| 107 layer->SetThickness(1); | |
| 108 | |
| 109 PolylineSceneLayer::Chain chain; | |
| 110 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); | |
| 111 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); | |
| 112 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); | |
| 113 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); | |
| 114 layer->AddChain(chain, true); | |
| 115 | |
| 116 chain.clear(); | |
| 117 chain.push_back(ScenePoint2D(-5, -5)); | |
| 118 chain.push_back(ScenePoint2D(5, -5)); | |
| 119 chain.push_back(ScenePoint2D(5, 5)); | |
| 120 chain.push_back(ScenePoint2D(-5, 5)); | |
| 121 layer->AddChain(chain, true); | |
| 122 | |
| 123 double dy = 1.01; | |
| 124 chain.clear(); | |
| 125 chain.push_back(ScenePoint2D(-4, -4)); | |
| 126 chain.push_back(ScenePoint2D(4, -4 + dy)); | |
| 127 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); | |
| 128 chain.push_back(ScenePoint2D(4, 2)); | |
| 129 layer->AddChain(chain, false); | |
| 130 | |
| 131 layer->SetColor(0,255, 255); | |
| 132 scene.SetLayer(50, layer.release()); | |
| 133 } | |
| 134 | |
| 135 // Some text | |
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136 { |
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137 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); |
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138 layer->SetText("Hello"); |
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139 scene.SetLayer(100, layer.release()); |
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140 } |
| 600 | 141 } |
| 142 | |
| 143 | |
| 144 void TakeScreenshot(const std::string& target, | |
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145 const Scene2D& scene, |
| 600 | 146 unsigned int canvasWidth, |
| 147 unsigned int canvasHeight) | |
| 148 { | |
| 149 // Take a screenshot, then save it as PNG file | |
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150 CairoCompositor compositor(scene, canvasWidth, canvasHeight); |
| 600 | 151 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); |
| 152 compositor.Refresh(); | |
| 153 | |
| 154 Orthanc::ImageAccessor canvas; | |
| 155 compositor.GetCanvas().GetReadOnlyAccessor(canvas); | |
| 156 | |
| 157 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false); | |
| 158 Orthanc::ImageProcessing::Convert(png, canvas); | |
| 159 | |
| 160 Orthanc::PngWriter writer; | |
| 161 writer.WriteToFile(target, png); | |
| 162 } | |
| 163 | |
| 164 | |
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165 void HandleApplicationEvent(ViewportControllerPtr controller, |
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166 const OpenGLCompositor& compositor, |
| 600 | 167 const SDL_Event& event, |
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168 FlexiblePointerTrackerPtr& activeTracker) |
| 600 | 169 { |
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170 Scene2D& scene(*controller->GetScene()); |
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171 if (event.type == SDL_MOUSEMOTION) |
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172 { |
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173 int scancodeCount = 0; |
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174 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); |
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175 |
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176 if (activeTracker.get() == NULL && |
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177 SDL_SCANCODE_LCTRL < scancodeCount && |
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178 keyboardState[SDL_SCANCODE_LCTRL]) |
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179 { |
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180 // The "left-ctrl" key is down, while no tracker is present |
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181 |
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182 PointerEvent e; |
| 617 | 183 e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
| 184 | |
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185 ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); |
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186 |
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187 char buf[64]; |
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188 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); |
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189 |
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190 if (scene.HasLayer(LAYER_POSITION)) |
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191 { |
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192 TextSceneLayer& layer = |
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193 dynamic_cast<TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); |
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194 layer.SetText(buf); |
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195 layer.SetPosition(p.GetX(), p.GetY()); |
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196 } |
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197 else |
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198 { |
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199 std::auto_ptr<TextSceneLayer> |
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200 layer(new TextSceneLayer); |
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201 layer->SetColor(0, 255, 0); |
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202 layer->SetText(buf); |
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203 layer->SetBorder(20); |
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204 layer->SetAnchor(BitmapAnchor_BottomCenter); |
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205 layer->SetPosition(p.GetX(), p.GetY()); |
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206 scene.SetLayer(LAYER_POSITION, layer.release()); |
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207 } |
| 617 | 208 } |
| 209 else | |
| 210 { | |
| 211 scene.DeleteLayer(LAYER_POSITION); | |
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212 } |
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213 } |
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214 else if (event.type == SDL_MOUSEBUTTONDOWN) |
| 600 | 215 { |
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216 PointerEvent e; |
| 617 | 217 e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
| 600 | 218 |
| 219 switch (event.button.button) | |
| 220 { | |
| 221 case SDL_BUTTON_MIDDLE: | |
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222 activeTracker = boost::make_shared<PanSceneTracker>(controller, e); |
| 600 | 223 break; |
| 224 | |
| 225 case SDL_BUTTON_RIGHT: | |
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226 activeTracker = boost::make_shared<ZoomSceneTracker>(controller, |
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227 e, compositor.GetCanvasHeight()); |
| 600 | 228 break; |
| 229 | |
| 230 case SDL_BUTTON_LEFT: | |
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231 activeTracker = boost::make_shared<RotateSceneTracker>(controller, e); |
| 600 | 232 break; |
| 233 | |
| 234 default: | |
| 235 break; | |
| 236 } | |
| 237 } | |
| 238 else if (event.type == SDL_KEYDOWN && | |
| 239 event.key.repeat == 0 /* Ignore key bounce */) | |
| 240 { | |
| 241 switch (event.key.keysym.sym) | |
| 242 { | |
| 243 case SDLK_s: | |
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244 controller->FitContent(compositor.GetCanvasWidth(), |
| 617 | 245 compositor.GetCanvasHeight()); |
| 600 | 246 break; |
| 247 | |
| 248 case SDLK_c: | |
| 617 | 249 TakeScreenshot("screenshot.png", scene, |
| 250 compositor.GetCanvasWidth(), | |
| 251 compositor.GetCanvasHeight()); | |
| 600 | 252 break; |
| 253 | |
| 254 default: | |
| 255 break; | |
| 256 } | |
| 257 } | |
| 258 } | |
| 259 | |
| 260 | |
| 261 static void GLAPIENTRY | |
| 262 OpenGLMessageCallback(GLenum source, | |
| 263 GLenum type, | |
| 264 GLuint id, | |
| 265 GLenum severity, | |
| 266 GLsizei length, | |
| 267 const GLchar* message, | |
| 268 const void* userParam ) | |
| 269 { | |
| 270 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) | |
| 271 { | |
| 272 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", | |
| 273 ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), | |
| 274 type, severity, message ); | |
| 275 } | |
| 276 } | |
| 277 | |
| 278 | |
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279 void Run(ViewportControllerPtr controller) |
| 600 | 280 { |
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281 SdlOpenGLWindow window("Hello", 1024, 768); |
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282 |
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283 controller->FitContent(window.GetCanvasWidth(), window.GetCanvasHeight()); |
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284 |
| 600 | 285 glEnable(GL_DEBUG_OUTPUT); |
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286 glDebugMessageCallback(OpenGLMessageCallback, 0); |
| 600 | 287 |
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288 OpenGLCompositor compositor(window, *controller->GetScene()); |
| 600 | 289 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, |
| 290 FONT_SIZE, Orthanc::Encoding_Latin1); | |
| 291 | |
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292 FlexiblePointerTrackerPtr tracker; |
| 600 | 293 |
| 294 bool stop = false; | |
| 295 while (!stop) | |
| 296 { | |
| 297 compositor.Refresh(); | |
| 298 | |
| 299 SDL_Event event; | |
| 300 while (!stop && | |
| 301 SDL_PollEvent(&event)) | |
| 302 { | |
| 303 if (event.type == SDL_QUIT) | |
| 304 { | |
| 305 stop = true; | |
| 306 break; | |
| 307 } | |
| 308 else if (event.type == SDL_MOUSEMOTION) | |
| 309 { | |
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310 if (tracker) |
| 600 | 311 { |
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312 PointerEvent e; |
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313 e.AddPosition(compositor.GetPixelCenterCoordinates( |
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314 event.button.x, event.button.y)); |
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315 tracker->PointerMove(e); |
| 600 | 316 } |
| 317 } | |
| 318 else if (event.type == SDL_MOUSEBUTTONUP) | |
| 319 { | |
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320 if (tracker) |
| 600 | 321 { |
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322 PointerEvent e; |
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323 e.AddPosition(compositor.GetPixelCenterCoordinates( |
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324 event.button.x, event.button.y)); |
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325 tracker->PointerUp(e); |
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326 if(!tracker->IsAlive()) |
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327 tracker.reset(); |
| 600 | 328 } |
| 329 } | |
| 330 else if (event.type == SDL_WINDOWEVENT && | |
| 331 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED) | |
| 332 { | |
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333 tracker.reset(); |
| 600 | 334 compositor.UpdateSize(); |
| 335 } | |
| 336 else if (event.type == SDL_KEYDOWN && | |
| 337 event.key.repeat == 0 /* Ignore key bounce */) | |
| 338 { | |
| 339 switch (event.key.keysym.sym) | |
| 340 { | |
| 341 case SDLK_f: | |
| 342 window.GetWindow().ToggleMaximize(); | |
| 343 break; | |
| 344 | |
| 345 case SDLK_q: | |
| 346 stop = true; | |
| 347 break; | |
| 348 | |
| 349 default: | |
| 350 break; | |
| 351 } | |
| 352 } | |
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353 |
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354 HandleApplicationEvent(controller, compositor, event, tracker); |
| 600 | 355 } |
| 356 | |
| 357 SDL_Delay(1); | |
| 358 } | |
| 359 } | |
| 360 | |
| 361 | |
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362 |
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363 |
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364 /** |
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365 * IMPORTANT: The full arguments to "main()" are needed for SDL on |
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366 * Windows. Otherwise, one gets the linking error "undefined reference |
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367 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows |
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368 **/ |
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369 int main(int argc, char* argv[]) |
| 600 | 370 { |
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371 StoneInitialize(); |
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372 Orthanc::Logging::EnableInfoLevel(true); |
| 600 | 373 |
| 374 try | |
| 375 { | |
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376 MessageBroker broker; |
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377 ViewportControllerPtr controller = boost::make_shared<ViewportController>( |
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378 boost::ref(broker)); |
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379 PrepareScene(controller); |
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380 Run(controller); |
| 600 | 381 } |
| 382 catch (Orthanc::OrthancException& e) | |
| 383 { | |
| 384 LOG(ERROR) << "EXCEPTION: " << e.What(); | |
| 385 } | |
| 386 | |
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387 StoneFinalize(); |
| 600 | 388 |
| 389 return 0; | |
| 390 } |