Mercurial > hg > orthanc-stone
annotate Samples/Sdl/BasicScene.cpp @ 613:412a2d01a189
automatic initialization of glew
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 30 Apr 2019 16:44:23 +0200 |
parents | e3f21a265be5 |
children | 7efa2543699d |
rev | line source |
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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" |
600 | 32 |
33 // From Orthanc framework | |
34 #include <Core/Logging.h> | |
35 #include <Core/OrthancException.h> | |
36 #include <Core/Images/Image.h> | |
37 #include <Core/Images/ImageProcessing.h> | |
38 #include <Core/Images/PngWriter.h> | |
39 | |
40 #include <SDL.h> | |
41 #include <stdio.h> | |
42 | |
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43 static const unsigned int FONT_SIZE = 32; |
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44 static const int LAYER_POSITION = 150; |
600 | 45 |
46 | |
47 void PrepareScene(OrthancStone::Scene2D& scene) | |
48 { | |
49 using namespace OrthancStone; | |
50 | |
51 // Texture of 2x2 size | |
52 { | |
53 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); | |
54 | |
55 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
56 p[0] = 255; | |
57 p[1] = 0; | |
58 p[2] = 0; | |
59 | |
60 p[3] = 0; | |
61 p[4] = 255; | |
62 p[5] = 0; | |
63 | |
64 p = reinterpret_cast<uint8_t*>(i.GetRow(1)); | |
65 p[0] = 0; | |
66 p[1] = 0; | |
67 p[2] = 255; | |
68 | |
69 p[3] = 255; | |
70 p[4] = 0; | |
71 p[5] = 0; | |
72 | |
73 scene.SetLayer(12, new ColorTextureSceneLayer(i)); | |
74 | |
75 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
76 l->SetOrigin(-3, 2); | |
77 l->SetPixelSpacing(1.5, 1); | |
78 l->SetAngle(20.0 / 180.0 * M_PI); | |
79 scene.SetLayer(14, l.release()); | |
80 } | |
81 | |
82 // Texture of 1x1 size | |
83 { | |
84 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); | |
85 | |
86 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
87 p[0] = 255; | |
88 p[1] = 0; | |
89 p[2] = 0; | |
90 | |
91 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
92 l->SetOrigin(-2, 1); | |
93 l->SetAngle(20.0 / 180.0 * M_PI); | |
94 scene.SetLayer(13, l.release()); | |
95 } | |
96 | |
97 // Some lines | |
98 { | |
99 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); | |
100 | |
101 layer->SetThickness(1); | |
102 | |
103 PolylineSceneLayer::Chain chain; | |
104 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); | |
105 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); | |
106 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); | |
107 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); | |
108 layer->AddChain(chain, true); | |
109 | |
110 chain.clear(); | |
111 chain.push_back(ScenePoint2D(-5, -5)); | |
112 chain.push_back(ScenePoint2D(5, -5)); | |
113 chain.push_back(ScenePoint2D(5, 5)); | |
114 chain.push_back(ScenePoint2D(-5, 5)); | |
115 layer->AddChain(chain, true); | |
116 | |
117 double dy = 1.01; | |
118 chain.clear(); | |
119 chain.push_back(ScenePoint2D(-4, -4)); | |
120 chain.push_back(ScenePoint2D(4, -4 + dy)); | |
121 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); | |
122 chain.push_back(ScenePoint2D(4, 2)); | |
123 layer->AddChain(chain, false); | |
124 | |
125 layer->SetColor(0,255, 255); | |
126 scene.SetLayer(50, layer.release()); | |
127 } | |
128 | |
129 // Some text | |
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130 { |
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131 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); |
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132 layer->SetText("Hello"); |
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133 scene.SetLayer(100, layer.release()); |
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134 } |
600 | 135 } |
136 | |
137 | |
138 void TakeScreenshot(const std::string& target, | |
139 const OrthancStone::Scene2D& scene, | |
140 unsigned int canvasWidth, | |
141 unsigned int canvasHeight) | |
142 { | |
143 // Take a screenshot, then save it as PNG file | |
144 OrthancStone::CairoCompositor compositor(scene, canvasWidth, canvasHeight); | |
145 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); | |
146 compositor.Refresh(); | |
147 | |
148 Orthanc::ImageAccessor canvas; | |
149 compositor.GetCanvas().GetReadOnlyAccessor(canvas); | |
150 | |
151 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false); | |
152 Orthanc::ImageProcessing::Convert(png, canvas); | |
153 | |
154 Orthanc::PngWriter writer; | |
155 writer.WriteToFile(target, png); | |
156 } | |
157 | |
158 | |
159 void HandleApplicationEvent(OrthancStone::Scene2D& scene, | |
160 const SDL_Event& event, | |
161 std::auto_ptr<OrthancStone::IPointerTracker>& activeTracker, | |
162 unsigned int windowWidth, | |
163 unsigned int windowHeight) | |
164 { | |
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165 bool hasPositionLayer = false; |
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166 |
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167 if (event.type == SDL_MOUSEMOTION) |
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168 { |
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169 int scancodeCount = 0; |
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170 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); |
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171 |
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172 if (activeTracker.get() == NULL && |
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173 SDL_SCANCODE_LCTRL < scancodeCount && |
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174 keyboardState[SDL_SCANCODE_LCTRL]) |
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175 { |
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176 // The "left-ctrl" key is down, while no tracker is present |
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177 |
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178 OrthancStone::PointerEvent e; |
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179 e.AddIntegerPosition(event.button.x - static_cast<int>(windowWidth) / 2, |
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180 event.button.y - static_cast<int>(windowHeight) / 2); |
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181 OrthancStone::ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); |
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182 |
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183 char buf[64]; |
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184 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); |
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185 |
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186 if (scene.HasLayer(LAYER_POSITION)) |
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187 { |
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188 OrthancStone::TextSceneLayer& layer = |
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189 dynamic_cast<OrthancStone::TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); |
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190 layer.SetText(buf); |
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191 layer.SetPosition(p.GetX(), p.GetY()); |
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192 } |
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193 else |
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194 { |
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195 std::auto_ptr<OrthancStone::TextSceneLayer> layer(new OrthancStone::TextSceneLayer); |
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196 layer->SetColor(0, 255, 0); |
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197 layer->SetText(buf); |
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198 layer->SetBorder(20); |
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199 layer->SetAnchor(OrthancStone::BitmapAnchor_BottomCenter); |
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200 layer->SetPosition(p.GetX(), p.GetY()); |
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201 scene.SetLayer(LAYER_POSITION, layer.release()); |
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202 } |
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203 |
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204 hasPositionLayer = true; |
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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; | |
210 e.AddIntegerPosition(event.button.x, event.button.y); | |
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: | |
219 activeTracker.reset(new OrthancStone::ZoomSceneTracker | |
220 (scene, e, windowWidth, windowHeight)); | |
221 break; | |
222 | |
223 case SDL_BUTTON_LEFT: | |
224 activeTracker.reset(new OrthancStone::RotateSceneTracker | |
225 (scene, e, windowWidth, windowHeight)); | |
226 break; | |
227 | |
228 default: | |
229 break; | |
230 } | |
231 } | |
232 else if (event.type == SDL_KEYDOWN && | |
233 event.key.repeat == 0 /* Ignore key bounce */) | |
234 { | |
235 switch (event.key.keysym.sym) | |
236 { | |
237 case SDLK_s: | |
238 scene.FitContent(windowWidth, windowHeight); | |
239 break; | |
240 | |
241 case SDLK_c: | |
242 TakeScreenshot("screenshot.png", scene, windowWidth, windowHeight); | |
243 break; | |
244 | |
245 default: | |
246 break; | |
247 } | |
248 } | |
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249 |
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250 if (!hasPositionLayer) |
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251 { |
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252 scene.DeleteLayer(LAYER_POSITION); |
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253 } |
600 | 254 } |
255 | |
256 | |
257 static void GLAPIENTRY | |
258 OpenGLMessageCallback(GLenum source, | |
259 GLenum type, | |
260 GLuint id, | |
261 GLenum severity, | |
262 GLsizei length, | |
263 const GLchar* message, | |
264 const void* userParam ) | |
265 { | |
266 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) | |
267 { | |
268 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", | |
269 ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), | |
270 type, severity, message ); | |
271 } | |
272 } | |
273 | |
274 | |
275 void Run(OrthancStone::Scene2D& scene) | |
276 { | |
277 OrthancStone::SdlOpenGLWindow window("Hello", 1024, 768); | |
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278 |
600 | 279 scene.FitContent(window.GetCanvasWidth(), window.GetCanvasHeight()); |
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280 |
600 | 281 glEnable(GL_DEBUG_OUTPUT); |
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282 glDebugMessageCallback(OpenGLMessageCallback, 0); |
600 | 283 |
284 OrthancStone::OpenGLCompositor compositor(window, scene); | |
285 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, | |
286 FONT_SIZE, Orthanc::Encoding_Latin1); | |
287 | |
288 std::auto_ptr<OrthancStone::IPointerTracker> tracker; | |
289 | |
290 bool stop = false; | |
291 while (!stop) | |
292 { | |
293 compositor.Refresh(); | |
294 | |
295 SDL_Event event; | |
296 while (!stop && | |
297 SDL_PollEvent(&event)) | |
298 { | |
299 if (event.type == SDL_QUIT) | |
300 { | |
301 stop = true; | |
302 break; | |
303 } | |
304 else if (event.type == SDL_MOUSEMOTION) | |
305 { | |
306 if (tracker.get() != NULL) | |
307 { | |
308 OrthancStone::PointerEvent e; | |
309 e.AddIntegerPosition(event.button.x, event.button.y); | |
310 tracker->Update(e); | |
311 } | |
312 } | |
313 else if (event.type == SDL_MOUSEBUTTONUP) | |
314 { | |
315 if (tracker.get() != NULL) | |
316 { | |
317 tracker->Release(); | |
318 tracker.reset(NULL); | |
319 } | |
320 } | |
321 else if (event.type == SDL_WINDOWEVENT && | |
322 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED) | |
323 { | |
324 tracker.reset(NULL); | |
325 compositor.UpdateSize(); | |
326 } | |
327 else if (event.type == SDL_KEYDOWN && | |
328 event.key.repeat == 0 /* Ignore key bounce */) | |
329 { | |
330 switch (event.key.keysym.sym) | |
331 { | |
332 case SDLK_f: | |
333 window.GetWindow().ToggleMaximize(); | |
334 break; | |
335 | |
336 case SDLK_q: | |
337 stop = true; | |
338 break; | |
339 | |
340 default: | |
341 break; | |
342 } | |
343 } | |
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344 |
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345 HandleApplicationEvent(scene, event, tracker, window.GetCanvasWidth(), window.GetCanvasHeight()); |
600 | 346 } |
347 | |
348 SDL_Delay(1); | |
349 } | |
350 } | |
351 | |
352 | |
607
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353 |
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354 |
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355 /** |
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356 * IMPORTANT: The full arguments to "main()" are needed for SDL on |
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357 * Windows. Otherwise, one gets the linking error "undefined reference |
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358 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows |
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359 **/ |
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360 int main(int argc, char* argv[]) |
600 | 361 { |
610
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362 OrthancStone::StoneInitialize(); |
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363 Orthanc::Logging::EnableInfoLevel(true); |
600 | 364 |
365 try | |
366 { | |
367 OrthancStone::Scene2D scene; | |
368 PrepareScene(scene); | |
369 Run(scene); | |
370 } | |
371 catch (Orthanc::OrthancException& e) | |
372 { | |
373 LOG(ERROR) << "EXCEPTION: " << e.What(); | |
374 } | |
375 | |
610
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376 OrthancStone::StoneFinalize(); |
600 | 377 |
378 return 0; | |
379 } |