Mercurial > hg > orthanc-stone
annotate Samples/Sdl/BasicScene.cpp @ 706:ef07304d4423
Fixed C++ code to be C++03 compatible
| author | Benjamin Golinvaux <bgo@osimis.io> |
|---|---|
| date | Mon, 20 May 2019 11:03:36 +0200 |
| parents | 059e1fd05fd6 |
| children | f2ee003ba955 |
| 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 | |
| 43 #include <SDL.h> | |
| 44 #include <stdio.h> | |
| 45 | |
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46 static const unsigned int FONT_SIZE = 32; |
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47 static const int LAYER_POSITION = 150; |
| 600 | 48 |
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49 using namespace OrthancStone; |
| 600 | 50 |
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51 void PrepareScene(ViewportControllerPtr controller) |
| 600 | 52 { |
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53 Scene2D& scene(*controller->GetScene()); |
| 600 | 54 // Texture of 2x2 size |
| 55 { | |
| 56 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); | |
| 57 | |
| 58 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
| 59 p[0] = 255; | |
| 60 p[1] = 0; | |
| 61 p[2] = 0; | |
| 62 | |
| 63 p[3] = 0; | |
| 64 p[4] = 255; | |
| 65 p[5] = 0; | |
| 66 | |
| 67 p = reinterpret_cast<uint8_t*>(i.GetRow(1)); | |
| 68 p[0] = 0; | |
| 69 p[1] = 0; | |
| 70 p[2] = 255; | |
| 71 | |
| 72 p[3] = 255; | |
| 73 p[4] = 0; | |
| 74 p[5] = 0; | |
| 75 | |
| 76 scene.SetLayer(12, new ColorTextureSceneLayer(i)); | |
| 77 | |
| 78 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
| 79 l->SetOrigin(-3, 2); | |
| 80 l->SetPixelSpacing(1.5, 1); | |
| 81 l->SetAngle(20.0 / 180.0 * M_PI); | |
| 82 scene.SetLayer(14, l.release()); | |
| 83 } | |
| 84 | |
| 85 // Texture of 1x1 size | |
| 86 { | |
| 87 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); | |
| 88 | |
| 89 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
| 90 p[0] = 255; | |
| 91 p[1] = 0; | |
| 92 p[2] = 0; | |
| 93 | |
| 94 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
| 95 l->SetOrigin(-2, 1); | |
| 96 l->SetAngle(20.0 / 180.0 * M_PI); | |
| 97 scene.SetLayer(13, l.release()); | |
| 98 } | |
| 99 | |
| 100 // Some lines | |
| 101 { | |
| 102 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); | |
| 103 | |
| 104 layer->SetThickness(1); | |
| 105 | |
| 106 PolylineSceneLayer::Chain chain; | |
| 107 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); | |
| 108 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); | |
| 109 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); | |
| 110 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); | |
| 111 layer->AddChain(chain, true); | |
| 112 | |
| 113 chain.clear(); | |
| 114 chain.push_back(ScenePoint2D(-5, -5)); | |
| 115 chain.push_back(ScenePoint2D(5, -5)); | |
| 116 chain.push_back(ScenePoint2D(5, 5)); | |
| 117 chain.push_back(ScenePoint2D(-5, 5)); | |
| 118 layer->AddChain(chain, true); | |
| 119 | |
| 120 double dy = 1.01; | |
| 121 chain.clear(); | |
| 122 chain.push_back(ScenePoint2D(-4, -4)); | |
| 123 chain.push_back(ScenePoint2D(4, -4 + dy)); | |
| 124 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); | |
| 125 chain.push_back(ScenePoint2D(4, 2)); | |
| 126 layer->AddChain(chain, false); | |
| 127 | |
| 128 layer->SetColor(0,255, 255); | |
| 129 scene.SetLayer(50, layer.release()); | |
| 130 } | |
| 131 | |
| 132 // Some text | |
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133 { |
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134 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); |
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135 layer->SetText("Hello"); |
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136 scene.SetLayer(100, layer.release()); |
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137 } |
| 600 | 138 } |
| 139 | |
| 140 | |
| 141 void TakeScreenshot(const std::string& target, | |
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142 const Scene2D& scene, |
| 600 | 143 unsigned int canvasWidth, |
| 144 unsigned int canvasHeight) | |
| 145 { | |
| 146 // Take a screenshot, then save it as PNG file | |
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147 CairoCompositor compositor(scene, canvasWidth, canvasHeight); |
| 600 | 148 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); |
| 149 compositor.Refresh(); | |
| 150 | |
| 151 Orthanc::ImageAccessor canvas; | |
| 152 compositor.GetCanvas().GetReadOnlyAccessor(canvas); | |
| 153 | |
| 154 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false); | |
| 155 Orthanc::ImageProcessing::Convert(png, canvas); | |
| 156 | |
| 157 Orthanc::PngWriter writer; | |
| 158 writer.WriteToFile(target, png); | |
| 159 } | |
| 160 | |
| 161 | |
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162 void HandleApplicationEvent(ViewportControllerPtr controller, |
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163 const OpenGLCompositor& compositor, |
| 600 | 164 const SDL_Event& event, |
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165 FlexiblePointerTrackerPtr& activeTracker) |
| 600 | 166 { |
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167 Scene2D& scene(*controller->GetScene()); |
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168 if (event.type == SDL_MOUSEMOTION) |
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169 { |
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170 int scancodeCount = 0; |
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171 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); |
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172 |
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173 if (activeTracker.get() == NULL && |
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174 SDL_SCANCODE_LCTRL < scancodeCount && |
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175 keyboardState[SDL_SCANCODE_LCTRL]) |
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176 { |
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177 // The "left-ctrl" key is down, while no tracker is present |
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178 |
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179 PointerEvent e; |
| 617 | 180 e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
| 181 | |
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182 ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); |
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183 |
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184 char buf[64]; |
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185 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); |
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186 |
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187 if (scene.HasLayer(LAYER_POSITION)) |
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188 { |
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189 TextSceneLayer& layer = |
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190 dynamic_cast<TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); |
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191 layer.SetText(buf); |
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192 layer.SetPosition(p.GetX(), p.GetY()); |
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193 } |
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194 else |
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195 { |
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196 std::auto_ptr<TextSceneLayer> |
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197 layer(new TextSceneLayer); |
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198 layer->SetColor(0, 255, 0); |
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199 layer->SetText(buf); |
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200 layer->SetBorder(20); |
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201 layer->SetAnchor(BitmapAnchor_BottomCenter); |
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202 layer->SetPosition(p.GetX(), p.GetY()); |
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203 scene.SetLayer(LAYER_POSITION, layer.release()); |
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204 } |
| 617 | 205 } |
| 206 else | |
| 207 { | |
| 208 scene.DeleteLayer(LAYER_POSITION); | |
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209 } |
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210 } |
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211 else if (event.type == SDL_MOUSEBUTTONDOWN) |
| 600 | 212 { |
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213 PointerEvent e; |
| 617 | 214 e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
| 600 | 215 |
| 216 switch (event.button.button) | |
| 217 { | |
| 218 case SDL_BUTTON_MIDDLE: | |
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219 activeTracker.reset(new PanSceneTracker( |
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220 controller, e)); |
| 600 | 221 break; |
| 222 | |
| 223 case SDL_BUTTON_RIGHT: | |
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224 activeTracker.reset(new ZoomSceneTracker( |
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225 controller, e, compositor.GetCanvasHeight())); |
| 600 | 226 break; |
| 227 | |
| 228 case SDL_BUTTON_LEFT: | |
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229 activeTracker.reset(new RotateSceneTracker( |
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230 controller, e)); |
| 600 | 231 break; |
| 232 | |
| 233 default: | |
| 234 break; | |
| 235 } | |
| 236 } | |
| 237 else if (event.type == SDL_KEYDOWN && | |
| 238 event.key.repeat == 0 /* Ignore key bounce */) | |
| 239 { | |
| 240 switch (event.key.keysym.sym) | |
| 241 { | |
| 242 case SDLK_s: | |
| 617 | 243 scene.FitContent(compositor.GetCanvasWidth(), |
| 244 compositor.GetCanvasHeight()); | |
| 600 | 245 break; |
| 246 | |
| 247 case SDLK_c: | |
| 617 | 248 TakeScreenshot("screenshot.png", scene, |
| 249 compositor.GetCanvasWidth(), | |
| 250 compositor.GetCanvasHeight()); | |
| 600 | 251 break; |
| 252 | |
| 253 default: | |
| 254 break; | |
| 255 } | |
| 256 } | |
| 257 } | |
| 258 | |
| 259 | |
| 260 static void GLAPIENTRY | |
| 261 OpenGLMessageCallback(GLenum source, | |
| 262 GLenum type, | |
| 263 GLuint id, | |
| 264 GLenum severity, | |
| 265 GLsizei length, | |
| 266 const GLchar* message, | |
| 267 const void* userParam ) | |
| 268 { | |
| 269 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) | |
| 270 { | |
| 271 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", | |
| 272 ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), | |
| 273 type, severity, message ); | |
| 274 } | |
| 275 } | |
| 276 | |
| 277 | |
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278 void Run(ViewportControllerPtr controller) |
| 600 | 279 { |
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280 SdlOpenGLWindow window("Hello", 1024, 768); |
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281 |
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282 controller->GetScene()->FitContent( |
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283 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( |
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378 new ViewportController(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 } |