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> |
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date | Tue, 14 May 2019 13:51:00 +0200 |
parents | 7efa2543699d |
children | 059e1fd05fd6 |
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" |
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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 { |
610
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OrthancStone::StoneInitialize()
Sebastien Jodogne <s.jodogne@gmail.com>
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359 OrthancStone::StoneInitialize(); |
613
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automatic initialization of glew
Sebastien Jodogne <s.jodogne@gmail.com>
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360 Orthanc::Logging::EnableInfoLevel(true); |
600 | 361 |
362 try | |
363 { | |
654
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Benjamin Golinvaux <bgo@osimis.io>
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364 OrthancStone::MessageBroker broker; |
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Turned the scene into an observable to be able to dynamically react to
Benjamin Golinvaux <bgo@osimis.io>
parents:
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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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OrthancStone::StoneInitialize()
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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374 OrthancStone::StoneFinalize(); |
600 | 375 |
376 return 0; | |
377 } |