Mercurial > hg > orthanc-stone
annotate Samples/Sdl/BasicScene.cpp @ 654:462a5074f914
Turned the scene into an observable to be able to dynamically react to
scene to canvas transform changes --> now the handles and angle measure
adornments are immune to zoom changes
| author | Benjamin Golinvaux <bgo@osimis.io> |
|---|---|
| date | Tue, 14 May 2019 13:51:00 +0200 |
| parents | 7efa2543699d |
| children | 059e1fd05fd6 |
| 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/StoneInitialization.h" |
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32 #include "../../Framework/Messages/MessageBroker.h" |
| 600 | 33 |
| 34 // From Orthanc framework | |
| 35 #include <Core/Logging.h> | |
| 36 #include <Core/OrthancException.h> | |
| 37 #include <Core/Images/Image.h> | |
| 38 #include <Core/Images/ImageProcessing.h> | |
| 39 #include <Core/Images/PngWriter.h> | |
| 40 | |
| 41 #include <SDL.h> | |
| 42 #include <stdio.h> | |
| 43 | |
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44 static const unsigned int FONT_SIZE = 32; |
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45 static const int LAYER_POSITION = 150; |
| 600 | 46 |
| 47 | |
| 48 void PrepareScene(OrthancStone::Scene2D& scene) | |
| 49 { | |
| 50 using namespace OrthancStone; | |
| 51 | |
| 52 // Texture of 2x2 size | |
| 53 { | |
| 54 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); | |
| 55 | |
| 56 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
| 57 p[0] = 255; | |
| 58 p[1] = 0; | |
| 59 p[2] = 0; | |
| 60 | |
| 61 p[3] = 0; | |
| 62 p[4] = 255; | |
| 63 p[5] = 0; | |
| 64 | |
| 65 p = reinterpret_cast<uint8_t*>(i.GetRow(1)); | |
| 66 p[0] = 0; | |
| 67 p[1] = 0; | |
| 68 p[2] = 255; | |
| 69 | |
| 70 p[3] = 255; | |
| 71 p[4] = 0; | |
| 72 p[5] = 0; | |
| 73 | |
| 74 scene.SetLayer(12, new ColorTextureSceneLayer(i)); | |
| 75 | |
| 76 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
| 77 l->SetOrigin(-3, 2); | |
| 78 l->SetPixelSpacing(1.5, 1); | |
| 79 l->SetAngle(20.0 / 180.0 * M_PI); | |
| 80 scene.SetLayer(14, l.release()); | |
| 81 } | |
| 82 | |
| 83 // Texture of 1x1 size | |
| 84 { | |
| 85 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); | |
| 86 | |
| 87 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
| 88 p[0] = 255; | |
| 89 p[1] = 0; | |
| 90 p[2] = 0; | |
| 91 | |
| 92 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
| 93 l->SetOrigin(-2, 1); | |
| 94 l->SetAngle(20.0 / 180.0 * M_PI); | |
| 95 scene.SetLayer(13, l.release()); | |
| 96 } | |
| 97 | |
| 98 // Some lines | |
| 99 { | |
| 100 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); | |
| 101 | |
| 102 layer->SetThickness(1); | |
| 103 | |
| 104 PolylineSceneLayer::Chain chain; | |
| 105 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); | |
| 106 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); | |
| 107 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); | |
| 108 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); | |
| 109 layer->AddChain(chain, true); | |
| 110 | |
| 111 chain.clear(); | |
| 112 chain.push_back(ScenePoint2D(-5, -5)); | |
| 113 chain.push_back(ScenePoint2D(5, -5)); | |
| 114 chain.push_back(ScenePoint2D(5, 5)); | |
| 115 chain.push_back(ScenePoint2D(-5, 5)); | |
| 116 layer->AddChain(chain, true); | |
| 117 | |
| 118 double dy = 1.01; | |
| 119 chain.clear(); | |
| 120 chain.push_back(ScenePoint2D(-4, -4)); | |
| 121 chain.push_back(ScenePoint2D(4, -4 + dy)); | |
| 122 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); | |
| 123 chain.push_back(ScenePoint2D(4, 2)); | |
| 124 layer->AddChain(chain, false); | |
| 125 | |
| 126 layer->SetColor(0,255, 255); | |
| 127 scene.SetLayer(50, layer.release()); | |
| 128 } | |
| 129 | |
| 130 // Some text | |
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131 { |
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132 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); |
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133 layer->SetText("Hello"); |
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134 scene.SetLayer(100, layer.release()); |
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135 } |
| 600 | 136 } |
| 137 | |
| 138 | |
| 139 void TakeScreenshot(const std::string& target, | |
| 140 const OrthancStone::Scene2D& scene, | |
| 141 unsigned int canvasWidth, | |
| 142 unsigned int canvasHeight) | |
| 143 { | |
| 144 // Take a screenshot, then save it as PNG file | |
| 145 OrthancStone::CairoCompositor compositor(scene, canvasWidth, canvasHeight); | |
| 146 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); | |
| 147 compositor.Refresh(); | |
| 148 | |
| 149 Orthanc::ImageAccessor canvas; | |
| 150 compositor.GetCanvas().GetReadOnlyAccessor(canvas); | |
| 151 | |
| 152 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false); | |
| 153 Orthanc::ImageProcessing::Convert(png, canvas); | |
| 154 | |
| 155 Orthanc::PngWriter writer; | |
| 156 writer.WriteToFile(target, png); | |
| 157 } | |
| 158 | |
| 159 | |
| 160 void HandleApplicationEvent(OrthancStone::Scene2D& scene, | |
| 617 | 161 const OrthancStone::OpenGLCompositor& compositor, |
| 600 | 162 const SDL_Event& event, |
| 617 | 163 std::auto_ptr<OrthancStone::IPointerTracker>& activeTracker) |
| 600 | 164 { |
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165 if (event.type == SDL_MOUSEMOTION) |
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166 { |
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167 int scancodeCount = 0; |
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168 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); |
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169 |
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170 if (activeTracker.get() == NULL && |
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171 SDL_SCANCODE_LCTRL < scancodeCount && |
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172 keyboardState[SDL_SCANCODE_LCTRL]) |
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173 { |
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174 // The "left-ctrl" key is down, while no tracker is present |
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175 |
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176 OrthancStone::PointerEvent e; |
| 617 | 177 e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
| 178 | |
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179 OrthancStone::ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); |
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180 |
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181 char buf[64]; |
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182 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); |
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183 |
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184 if (scene.HasLayer(LAYER_POSITION)) |
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185 { |
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186 OrthancStone::TextSceneLayer& layer = |
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187 dynamic_cast<OrthancStone::TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); |
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188 layer.SetText(buf); |
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189 layer.SetPosition(p.GetX(), p.GetY()); |
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190 } |
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191 else |
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192 { |
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193 std::auto_ptr<OrthancStone::TextSceneLayer> layer(new OrthancStone::TextSceneLayer); |
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194 layer->SetColor(0, 255, 0); |
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195 layer->SetText(buf); |
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196 layer->SetBorder(20); |
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197 layer->SetAnchor(OrthancStone::BitmapAnchor_BottomCenter); |
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198 layer->SetPosition(p.GetX(), p.GetY()); |
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199 scene.SetLayer(LAYER_POSITION, layer.release()); |
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200 } |
| 617 | 201 } |
| 202 else | |
| 203 { | |
| 204 scene.DeleteLayer(LAYER_POSITION); | |
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205 } |
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206 } |
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207 else if (event.type == SDL_MOUSEBUTTONDOWN) |
| 600 | 208 { |
| 209 OrthancStone::PointerEvent e; | |
| 617 | 210 e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
| 600 | 211 |
| 212 switch (event.button.button) | |
| 213 { | |
| 214 case SDL_BUTTON_MIDDLE: | |
| 215 activeTracker.reset(new OrthancStone::PanSceneTracker(scene, e)); | |
| 216 break; | |
| 217 | |
| 218 case SDL_BUTTON_RIGHT: | |
| 617 | 219 activeTracker.reset(new OrthancStone::ZoomSceneTracker(scene, e, |
| 220 compositor.GetCanvasHeight())); | |
| 600 | 221 break; |
| 222 | |
| 223 case SDL_BUTTON_LEFT: | |
| 617 | 224 activeTracker.reset(new OrthancStone::RotateSceneTracker(scene, e)); |
| 600 | 225 break; |
| 226 | |
| 227 default: | |
| 228 break; | |
| 229 } | |
| 230 } | |
| 231 else if (event.type == SDL_KEYDOWN && | |
| 232 event.key.repeat == 0 /* Ignore key bounce */) | |
| 233 { | |
| 234 switch (event.key.keysym.sym) | |
| 235 { | |
| 236 case SDLK_s: | |
| 617 | 237 scene.FitContent(compositor.GetCanvasWidth(), |
| 238 compositor.GetCanvasHeight()); | |
| 600 | 239 break; |
| 240 | |
| 241 case SDLK_c: | |
| 617 | 242 TakeScreenshot("screenshot.png", scene, |
| 243 compositor.GetCanvasWidth(), | |
| 244 compositor.GetCanvasHeight()); | |
| 600 | 245 break; |
| 246 | |
| 247 default: | |
| 248 break; | |
| 249 } | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 | |
| 254 static void GLAPIENTRY | |
| 255 OpenGLMessageCallback(GLenum source, | |
| 256 GLenum type, | |
| 257 GLuint id, | |
| 258 GLenum severity, | |
| 259 GLsizei length, | |
| 260 const GLchar* message, | |
| 261 const void* userParam ) | |
| 262 { | |
| 263 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) | |
| 264 { | |
| 265 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", | |
| 266 ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), | |
| 267 type, severity, message ); | |
| 268 } | |
| 269 } | |
| 270 | |
| 271 | |
| 272 void Run(OrthancStone::Scene2D& scene) | |
| 273 { | |
| 274 OrthancStone::SdlOpenGLWindow window("Hello", 1024, 768); | |
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275 |
| 600 | 276 scene.FitContent(window.GetCanvasWidth(), window.GetCanvasHeight()); |
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277 |
| 600 | 278 glEnable(GL_DEBUG_OUTPUT); |
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279 glDebugMessageCallback(OpenGLMessageCallback, 0); |
| 600 | 280 |
| 281 OrthancStone::OpenGLCompositor compositor(window, scene); | |
| 282 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, | |
| 283 FONT_SIZE, Orthanc::Encoding_Latin1); | |
| 284 | |
| 285 std::auto_ptr<OrthancStone::IPointerTracker> tracker; | |
| 286 | |
| 287 bool stop = false; | |
| 288 while (!stop) | |
| 289 { | |
| 290 compositor.Refresh(); | |
| 291 | |
| 292 SDL_Event event; | |
| 293 while (!stop && | |
| 294 SDL_PollEvent(&event)) | |
| 295 { | |
| 296 if (event.type == SDL_QUIT) | |
| 297 { | |
| 298 stop = true; | |
| 299 break; | |
| 300 } | |
| 301 else if (event.type == SDL_MOUSEMOTION) | |
| 302 { | |
| 303 if (tracker.get() != NULL) | |
| 304 { | |
| 305 OrthancStone::PointerEvent e; | |
| 617 | 306 e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); |
| 600 | 307 tracker->Update(e); |
| 308 } | |
| 309 } | |
| 310 else if (event.type == SDL_MOUSEBUTTONUP) | |
| 311 { | |
| 312 if (tracker.get() != NULL) | |
| 313 { | |
| 314 tracker->Release(); | |
| 315 tracker.reset(NULL); | |
| 316 } | |
| 317 } | |
| 318 else if (event.type == SDL_WINDOWEVENT && | |
| 319 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED) | |
| 320 { | |
| 321 tracker.reset(NULL); | |
| 322 compositor.UpdateSize(); | |
| 323 } | |
| 324 else if (event.type == SDL_KEYDOWN && | |
| 325 event.key.repeat == 0 /* Ignore key bounce */) | |
| 326 { | |
| 327 switch (event.key.keysym.sym) | |
| 328 { | |
| 329 case SDLK_f: | |
| 330 window.GetWindow().ToggleMaximize(); | |
| 331 break; | |
| 332 | |
| 333 case SDLK_q: | |
| 334 stop = true; | |
| 335 break; | |
| 336 | |
| 337 default: | |
| 338 break; | |
| 339 } | |
| 340 } | |
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341 |
| 617 | 342 HandleApplicationEvent(scene, compositor, event, tracker); |
| 600 | 343 } |
| 344 | |
| 345 SDL_Delay(1); | |
| 346 } | |
| 347 } | |
| 348 | |
| 349 | |
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350 |
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351 |
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352 /** |
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353 * IMPORTANT: The full arguments to "main()" are needed for SDL on |
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354 * Windows. Otherwise, one gets the linking error "undefined reference |
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355 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows |
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356 **/ |
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357 int main(int argc, char* argv[]) |
| 600 | 358 { |
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OrthancStone::StoneInitialize()
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359 OrthancStone::StoneInitialize(); |
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360 Orthanc::Logging::EnableInfoLevel(true); |
| 600 | 361 |
| 362 try | |
| 363 { | |
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364 OrthancStone::MessageBroker broker; |
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365 OrthancStone::Scene2D scene(broker); |
| 600 | 366 PrepareScene(scene); |
| 367 Run(scene); | |
| 368 } | |
| 369 catch (Orthanc::OrthancException& e) | |
| 370 { | |
| 371 LOG(ERROR) << "EXCEPTION: " << e.What(); | |
| 372 } | |
| 373 | |
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374 OrthancStone::StoneFinalize(); |
| 600 | 375 |
| 376 return 0; | |
| 377 } |