Mercurial > hg > orthanc-stone
comparison Resources/Graveyard/Deprecated/Samples/Sdl/BasicScene.cpp @ 1503:553084468225
moving /Deprecated/ to /Resources/Graveyard/Deprecated/
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Tue, 30 Jun 2020 11:38:13 +0200 |
parents | Deprecated/Samples/Sdl/BasicScene.cpp@65e1e4b08302 |
children |
comparison
equal
deleted
inserted
replaced
1502:e5729dab3f67 | 1503:553084468225 |
---|---|
1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2020 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 "../../Framework/Viewport/SdlViewport.h" | |
24 #include "../../Framework/Scene2D/CairoCompositor.h" | |
25 #include "../../Framework/Scene2D/ColorTextureSceneLayer.h" | |
26 #include "../../Framework/Scene2D/OpenGLCompositor.h" | |
27 #include "../../Framework/Scene2D/PanSceneTracker.h" | |
28 #include "../../Framework/Scene2D/RotateSceneTracker.h" | |
29 #include "../../Framework/Scene2D/ZoomSceneTracker.h" | |
30 #include "../../Framework/Scene2DViewport/ViewportController.h" | |
31 #include "../../Framework/Scene2DViewport/UndoStack.h" | |
32 | |
33 #include "../../Framework/StoneInitialization.h" | |
34 #include "../../Framework/Messages/MessageBroker.h" | |
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 <boost/make_shared.hpp> | |
44 | |
45 #include <SDL.h> | |
46 #include <stdio.h> | |
47 | |
48 static const unsigned int FONT_SIZE = 32; | |
49 static const int LAYER_POSITION = 150; | |
50 | |
51 #define OPENGL_ENABLED 0 | |
52 | |
53 void PrepareScene(OrthancStone::Scene2D& scene) | |
54 { | |
55 using namespace OrthancStone; | |
56 | |
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::unique_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::unique_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::unique_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); | |
106 | |
107 layer->SetThickness(10); | |
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, 255, 0, 0); | |
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, 0, 255, 0); | |
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, 0, 0, 255); | |
130 | |
131 scene.SetLayer(50, layer.release()); | |
132 } | |
133 | |
134 // Some text | |
135 { | |
136 std::unique_ptr<TextSceneLayer> layer(new TextSceneLayer); | |
137 layer->SetText("Hello"); | |
138 scene.SetLayer(100, layer.release()); | |
139 } | |
140 } | |
141 | |
142 | |
143 void TakeScreenshot(const std::string& target, | |
144 const OrthancStone::Scene2D& scene, | |
145 unsigned int canvasWidth, | |
146 unsigned int canvasHeight) | |
147 { | |
148 using namespace OrthancStone; | |
149 // Take a screenshot, then save it as PNG file | |
150 CairoCompositor compositor(scene, canvasWidth, canvasHeight); | |
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 | |
165 void HandleApplicationEvent(const SDL_Event& event, | |
166 boost::shared_ptr<OrthancStone::ViewportController>& controller, | |
167 boost::shared_ptr<OrthancStone::IFlexiblePointerTracker>& activeTracker) | |
168 { | |
169 using namespace OrthancStone; | |
170 | |
171 Scene2D& scene = controller->GetScene(); | |
172 IViewport& viewport = controller->GetViewport(); | |
173 | |
174 if (event.type == SDL_MOUSEMOTION) | |
175 { | |
176 int scancodeCount = 0; | |
177 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); | |
178 | |
179 if (activeTracker.get() == NULL && | |
180 SDL_SCANCODE_LCTRL < scancodeCount && | |
181 keyboardState[SDL_SCANCODE_LCTRL]) | |
182 { | |
183 // The "left-ctrl" key is down, while no tracker is present | |
184 | |
185 PointerEvent e; | |
186 e.AddPosition(viewport.GetPixelCenterCoordinates(event.button.x, event.button.y)); | |
187 | |
188 ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); | |
189 | |
190 char buf[64]; | |
191 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); | |
192 | |
193 if (scene.HasLayer(LAYER_POSITION)) | |
194 { | |
195 TextSceneLayer& layer = | |
196 dynamic_cast<TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); | |
197 layer.SetText(buf); | |
198 layer.SetPosition(p.GetX(), p.GetY()); | |
199 } | |
200 else | |
201 { | |
202 std::unique_ptr<TextSceneLayer> | |
203 layer(new TextSceneLayer); | |
204 layer->SetColor(0, 255, 0); | |
205 layer->SetText(buf); | |
206 layer->SetBorder(20); | |
207 layer->SetAnchor(BitmapAnchor_BottomCenter); | |
208 layer->SetPosition(p.GetX(), p.GetY()); | |
209 scene.SetLayer(LAYER_POSITION, layer.release()); | |
210 } | |
211 } | |
212 else | |
213 { | |
214 scene.DeleteLayer(LAYER_POSITION); | |
215 } | |
216 } | |
217 else if (event.type == SDL_MOUSEBUTTONDOWN) | |
218 { | |
219 PointerEvent e; | |
220 e.AddPosition(viewport.GetPixelCenterCoordinates(event.button.x, event.button.y)); | |
221 | |
222 switch (event.button.button) | |
223 { | |
224 case SDL_BUTTON_MIDDLE: | |
225 activeTracker = boost::make_shared<PanSceneTracker>(controller, e); | |
226 break; | |
227 | |
228 case SDL_BUTTON_RIGHT: | |
229 activeTracker = boost::make_shared<ZoomSceneTracker> | |
230 (controller, e, viewport.GetCanvasHeight()); | |
231 break; | |
232 | |
233 case SDL_BUTTON_LEFT: | |
234 activeTracker = boost::make_shared<RotateSceneTracker>(controller, e); | |
235 break; | |
236 | |
237 default: | |
238 break; | |
239 } | |
240 } | |
241 else if (event.type == SDL_KEYDOWN && | |
242 event.key.repeat == 0 /* Ignore key bounce */) | |
243 { | |
244 switch (event.key.keysym.sym) | |
245 { | |
246 case SDLK_s: | |
247 controller->FitContent(viewport.GetCanvasWidth(), | |
248 viewport.GetCanvasHeight()); | |
249 break; | |
250 | |
251 case SDLK_c: | |
252 TakeScreenshot("screenshot.png", scene, | |
253 viewport.GetCanvasWidth(), | |
254 viewport.GetCanvasHeight()); | |
255 break; | |
256 | |
257 default: | |
258 break; | |
259 } | |
260 } | |
261 } | |
262 | |
263 #if OPENGL_ENABLED==1 | |
264 static void GLAPIENTRY | |
265 OpenGLMessageCallback(GLenum source, | |
266 GLenum type, | |
267 GLuint id, | |
268 GLenum severity, | |
269 GLsizei length, | |
270 const GLchar* message, | |
271 const void* userParam ) | |
272 { | |
273 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) | |
274 { | |
275 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", | |
276 ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), | |
277 type, severity, message ); | |
278 } | |
279 } | |
280 #endif | |
281 | |
282 void Run(OrthancStone::MessageBroker& broker, | |
283 OrthancStone::SdlViewport& viewport) | |
284 { | |
285 using namespace OrthancStone; | |
286 | |
287 boost::shared_ptr<ViewportController> controller( | |
288 new ViewportController(boost::make_shared<UndoStack>(), broker, viewport)); | |
289 | |
290 #if OPENGL_ENABLED==1 | |
291 glEnable(GL_DEBUG_OUTPUT); | |
292 glDebugMessageCallback(OpenGLMessageCallback, 0); | |
293 #endif | |
294 | |
295 boost::shared_ptr<IFlexiblePointerTracker> tracker; | |
296 | |
297 bool firstShown = true; | |
298 bool stop = false; | |
299 while (!stop) | |
300 { | |
301 viewport.Refresh(); | |
302 | |
303 SDL_Event event; | |
304 while (!stop && | |
305 SDL_PollEvent(&event)) | |
306 { | |
307 if (event.type == SDL_QUIT) | |
308 { | |
309 stop = true; | |
310 break; | |
311 } | |
312 else if (event.type == SDL_MOUSEMOTION) | |
313 { | |
314 if (tracker) | |
315 { | |
316 PointerEvent e; | |
317 e.AddPosition(viewport.GetPixelCenterCoordinates( | |
318 event.button.x, event.button.y)); | |
319 tracker->PointerMove(e); | |
320 } | |
321 } | |
322 else if (event.type == SDL_MOUSEBUTTONUP) | |
323 { | |
324 if (tracker) | |
325 { | |
326 PointerEvent e; | |
327 e.AddPosition(viewport.GetPixelCenterCoordinates( | |
328 event.button.x, event.button.y)); | |
329 tracker->PointerUp(e); | |
330 if(!tracker->IsAlive()) | |
331 tracker.reset(); | |
332 } | |
333 } | |
334 else if (event.type == SDL_WINDOWEVENT) | |
335 { | |
336 switch (event.window.event) | |
337 { | |
338 case SDL_WINDOWEVENT_SIZE_CHANGED: | |
339 tracker.reset(); | |
340 viewport.UpdateSize(event.window.data1, event.window.data2); | |
341 break; | |
342 | |
343 case SDL_WINDOWEVENT_SHOWN: | |
344 if (firstShown) | |
345 { | |
346 // Once the window is first shown, fit the content to its size | |
347 controller->FitContent(viewport.GetCanvasWidth(), viewport.GetCanvasHeight()); | |
348 firstShown = false; | |
349 } | |
350 | |
351 break; | |
352 | |
353 default: | |
354 break; | |
355 } | |
356 } | |
357 else if (event.type == SDL_KEYDOWN && | |
358 event.key.repeat == 0 /* Ignore key bounce */) | |
359 { | |
360 switch (event.key.keysym.sym) | |
361 { | |
362 case SDLK_f: | |
363 viewport.GetWindow().ToggleMaximize(); | |
364 break; | |
365 | |
366 case SDLK_q: | |
367 stop = true; | |
368 break; | |
369 | |
370 default: | |
371 break; | |
372 } | |
373 } | |
374 | |
375 HandleApplicationEvent(event, controller, tracker); | |
376 } | |
377 | |
378 SDL_Delay(1); | |
379 } | |
380 } | |
381 | |
382 | |
383 | |
384 | |
385 /** | |
386 * IMPORTANT: The full arguments to "main()" are needed for SDL on | |
387 * Windows. Otherwise, one gets the linking error "undefined reference | |
388 * to `SDL_main'". https://wiki.libsdl.org/FAQWindows | |
389 **/ | |
390 int main(int argc, char* argv[]) | |
391 { | |
392 OrthancStone::StoneInitialize(); | |
393 Orthanc::Logging::EnableInfoLevel(true); | |
394 | |
395 try | |
396 { | |
397 #if OPENGL_ENABLED==1 | |
398 OrthancStone::SdlOpenGLViewport viewport("Hello", 1024, 768); | |
399 #else | |
400 OrthancStone::SdlCairoViewport viewport("Hello", 1024, 768); | |
401 #endif | |
402 PrepareScene(viewport.GetScene()); | |
403 | |
404 viewport.GetCompositor().SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, | |
405 FONT_SIZE, Orthanc::Encoding_Latin1); | |
406 | |
407 OrthancStone::MessageBroker broker; | |
408 Run(broker, viewport); | |
409 } | |
410 catch (Orthanc::OrthancException& e) | |
411 { | |
412 LOG(ERROR) << "EXCEPTION: " << e.What(); | |
413 } | |
414 | |
415 OrthancStone::StoneFinalize(); | |
416 | |
417 return 0; | |
418 } |