Mercurial > hg > orthanc-stone
annotate Samples/Sdl/BasicScene.cpp @ 602:03c4b998fcd0
display scene positions in the basic sample
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 29 Apr 2019 14:40:01 +0200 |
parents | 6129b1e5ba42 |
children | f4b37a991dac |
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" | |
25 #include "../../Framework/Scene2D/OpenGLCompositor.h" | |
26 #include "../../Framework/Scene2D/Scene2D.h" | |
27 #include "../../Framework/Scene2D/PanSceneTracker.h" | |
28 #include "../../Framework/Scene2D/RotateSceneTracker.h" | |
29 #include "../../Framework/Scene2D/ZoomSceneTracker.h" | |
30 #include "../../Framework/Scene2D/ColorTextureSceneLayer.h" | |
31 | |
32 // From Orthanc framework | |
33 #include <Core/Logging.h> | |
34 #include <Core/OrthancException.h> | |
35 #include <Core/Images/Image.h> | |
36 #include <Core/Images/ImageProcessing.h> | |
37 #include <Core/Images/PngWriter.h> | |
38 | |
39 #include <SDL.h> | |
40 #include <stdio.h> | |
41 | |
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42 static const unsigned int FONT_SIZE = 32; |
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43 static const int LAYER_POSITION = 150; |
600 | 44 |
45 | |
46 void PrepareScene(OrthancStone::Scene2D& scene) | |
47 { | |
48 using namespace OrthancStone; | |
49 | |
50 // Texture of 2x2 size | |
51 { | |
52 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); | |
53 | |
54 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
55 p[0] = 255; | |
56 p[1] = 0; | |
57 p[2] = 0; | |
58 | |
59 p[3] = 0; | |
60 p[4] = 255; | |
61 p[5] = 0; | |
62 | |
63 p = reinterpret_cast<uint8_t*>(i.GetRow(1)); | |
64 p[0] = 0; | |
65 p[1] = 0; | |
66 p[2] = 255; | |
67 | |
68 p[3] = 255; | |
69 p[4] = 0; | |
70 p[5] = 0; | |
71 | |
72 scene.SetLayer(12, new ColorTextureSceneLayer(i)); | |
73 | |
74 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
75 l->SetOrigin(-3, 2); | |
76 l->SetPixelSpacing(1.5, 1); | |
77 l->SetAngle(20.0 / 180.0 * M_PI); | |
78 scene.SetLayer(14, l.release()); | |
79 } | |
80 | |
81 // Texture of 1x1 size | |
82 { | |
83 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); | |
84 | |
85 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
86 p[0] = 255; | |
87 p[1] = 0; | |
88 p[2] = 0; | |
89 | |
90 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
91 l->SetOrigin(-2, 1); | |
92 l->SetAngle(20.0 / 180.0 * M_PI); | |
93 scene.SetLayer(13, l.release()); | |
94 } | |
95 | |
96 // Some lines | |
97 { | |
98 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); | |
99 | |
100 layer->SetThickness(1); | |
101 | |
102 PolylineSceneLayer::Chain chain; | |
103 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); | |
104 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); | |
105 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); | |
106 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); | |
107 layer->AddChain(chain, true); | |
108 | |
109 chain.clear(); | |
110 chain.push_back(ScenePoint2D(-5, -5)); | |
111 chain.push_back(ScenePoint2D(5, -5)); | |
112 chain.push_back(ScenePoint2D(5, 5)); | |
113 chain.push_back(ScenePoint2D(-5, 5)); | |
114 layer->AddChain(chain, true); | |
115 | |
116 double dy = 1.01; | |
117 chain.clear(); | |
118 chain.push_back(ScenePoint2D(-4, -4)); | |
119 chain.push_back(ScenePoint2D(4, -4 + dy)); | |
120 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); | |
121 chain.push_back(ScenePoint2D(4, 2)); | |
122 layer->AddChain(chain, false); | |
123 | |
124 layer->SetColor(0,255, 255); | |
125 scene.SetLayer(50, layer.release()); | |
126 } | |
127 | |
128 // Some text | |
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129 { |
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130 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); |
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131 layer->SetText("Hello"); |
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132 scene.SetLayer(100, layer.release()); |
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133 } |
600 | 134 } |
135 | |
136 | |
137 void TakeScreenshot(const std::string& target, | |
138 const OrthancStone::Scene2D& scene, | |
139 unsigned int canvasWidth, | |
140 unsigned int canvasHeight) | |
141 { | |
142 // Take a screenshot, then save it as PNG file | |
143 OrthancStone::CairoCompositor compositor(scene, canvasWidth, canvasHeight); | |
144 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); | |
145 compositor.Refresh(); | |
146 | |
147 Orthanc::ImageAccessor canvas; | |
148 compositor.GetCanvas().GetReadOnlyAccessor(canvas); | |
149 | |
150 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false); | |
151 Orthanc::ImageProcessing::Convert(png, canvas); | |
152 | |
153 Orthanc::PngWriter writer; | |
154 writer.WriteToFile(target, png); | |
155 } | |
156 | |
157 | |
158 void HandleApplicationEvent(OrthancStone::Scene2D& scene, | |
159 const SDL_Event& event, | |
160 std::auto_ptr<OrthancStone::IPointerTracker>& activeTracker, | |
161 unsigned int windowWidth, | |
162 unsigned int windowHeight) | |
163 { | |
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164 bool hasPositionLayer = false; |
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165 |
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166 if (event.type == SDL_MOUSEMOTION) |
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167 { |
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168 int scancodeCount = 0; |
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169 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); |
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170 |
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171 if (activeTracker.get() == NULL && |
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172 SDL_SCANCODE_LCTRL < scancodeCount && |
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173 keyboardState[SDL_SCANCODE_LCTRL]) |
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174 { |
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175 // The "left-ctrl" key is down, while no tracker is present |
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176 |
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177 OrthancStone::PointerEvent e; |
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178 e.AddIntegerPosition(event.button.x - static_cast<int>(windowWidth) / 2, |
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179 event.button.y - static_cast<int>(windowHeight) / 2); |
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180 OrthancStone::ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); |
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181 |
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182 char buf[64]; |
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183 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); |
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184 |
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185 if (scene.HasLayer(LAYER_POSITION)) |
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186 { |
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187 OrthancStone::TextSceneLayer& layer = |
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188 dynamic_cast<OrthancStone::TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); |
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189 layer.SetText(buf); |
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190 layer.SetPosition(p.GetX(), p.GetY()); |
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191 } |
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192 else |
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193 { |
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194 std::auto_ptr<OrthancStone::TextSceneLayer> layer(new OrthancStone::TextSceneLayer); |
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195 layer->SetColor(0, 255, 0); |
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196 layer->SetText(buf); |
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197 layer->SetBorder(20); |
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198 layer->SetAnchor(OrthancStone::BitmapAnchor_BottomCenter); |
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199 layer->SetPosition(p.GetX(), p.GetY()); |
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200 scene.SetLayer(LAYER_POSITION, layer.release()); |
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201 } |
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202 |
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203 hasPositionLayer = true; |
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204 } |
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205 } |
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206 else if (event.type == SDL_MOUSEBUTTONDOWN) |
600 | 207 { |
208 OrthancStone::PointerEvent e; | |
209 e.AddIntegerPosition(event.button.x, event.button.y); | |
210 | |
211 switch (event.button.button) | |
212 { | |
213 case SDL_BUTTON_MIDDLE: | |
214 activeTracker.reset(new OrthancStone::PanSceneTracker(scene, e)); | |
215 break; | |
216 | |
217 case SDL_BUTTON_RIGHT: | |
218 activeTracker.reset(new OrthancStone::ZoomSceneTracker | |
219 (scene, e, windowWidth, windowHeight)); | |
220 break; | |
221 | |
222 case SDL_BUTTON_LEFT: | |
223 activeTracker.reset(new OrthancStone::RotateSceneTracker | |
224 (scene, e, windowWidth, windowHeight)); | |
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: | |
237 scene.FitContent(windowWidth, windowHeight); | |
238 break; | |
239 | |
240 case SDLK_c: | |
241 TakeScreenshot("screenshot.png", scene, windowWidth, windowHeight); | |
242 break; | |
243 | |
244 default: | |
245 break; | |
246 } | |
247 } | |
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248 |
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249 if (!hasPositionLayer) |
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250 { |
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251 scene.DeleteLayer(LAYER_POSITION); |
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252 } |
600 | 253 } |
254 | |
255 | |
256 static void GLAPIENTRY | |
257 OpenGLMessageCallback(GLenum source, | |
258 GLenum type, | |
259 GLuint id, | |
260 GLenum severity, | |
261 GLsizei length, | |
262 const GLchar* message, | |
263 const void* userParam ) | |
264 { | |
265 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) | |
266 { | |
267 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", | |
268 ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), | |
269 type, severity, message ); | |
270 } | |
271 } | |
272 | |
273 | |
274 void Run(OrthancStone::Scene2D& scene) | |
275 { | |
276 OrthancStone::SdlOpenGLWindow window("Hello", 1024, 768); | |
277 scene.FitContent(window.GetCanvasWidth(), window.GetCanvasHeight()); | |
278 | |
279 glEnable(GL_DEBUG_OUTPUT); | |
280 glDebugMessageCallback(OpenGLMessageCallback, 0 ); | |
281 | |
282 OrthancStone::OpenGLCompositor compositor(window, scene); | |
283 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, | |
284 FONT_SIZE, Orthanc::Encoding_Latin1); | |
285 | |
286 std::auto_ptr<OrthancStone::IPointerTracker> tracker; | |
287 | |
288 bool stop = false; | |
289 while (!stop) | |
290 { | |
291 compositor.Refresh(); | |
292 | |
293 SDL_Event event; | |
294 while (!stop && | |
295 SDL_PollEvent(&event)) | |
296 { | |
297 if (event.type == SDL_QUIT) | |
298 { | |
299 stop = true; | |
300 break; | |
301 } | |
302 else if (event.type == SDL_MOUSEMOTION) | |
303 { | |
304 if (tracker.get() != NULL) | |
305 { | |
306 OrthancStone::PointerEvent e; | |
307 e.AddIntegerPosition(event.button.x, event.button.y); | |
308 tracker->Update(e); | |
309 } | |
310 } | |
311 else if (event.type == SDL_MOUSEBUTTONUP) | |
312 { | |
313 if (tracker.get() != NULL) | |
314 { | |
315 tracker->Release(); | |
316 tracker.reset(NULL); | |
317 } | |
318 } | |
319 else if (event.type == SDL_WINDOWEVENT && | |
320 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED) | |
321 { | |
322 tracker.reset(NULL); | |
323 compositor.UpdateSize(); | |
324 } | |
325 else if (event.type == SDL_KEYDOWN && | |
326 event.key.repeat == 0 /* Ignore key bounce */) | |
327 { | |
328 switch (event.key.keysym.sym) | |
329 { | |
330 case SDLK_f: | |
331 window.GetWindow().ToggleMaximize(); | |
332 break; | |
333 | |
334 case SDLK_q: | |
335 stop = true; | |
336 break; | |
337 | |
338 default: | |
339 break; | |
340 } | |
341 } | |
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342 |
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343 HandleApplicationEvent(scene, event, tracker, window.GetCanvasWidth(), window.GetCanvasHeight()); |
600 | 344 } |
345 | |
346 SDL_Delay(1); | |
347 } | |
348 } | |
349 | |
350 | |
351 int main() | |
352 { | |
353 Orthanc::Logging::Initialize(); | |
354 OrthancStone::SdlWindow::GlobalInitialize(); | |
355 | |
356 try | |
357 { | |
358 OrthancStone::Scene2D scene; | |
359 PrepareScene(scene); | |
360 Run(scene); | |
361 } | |
362 catch (Orthanc::OrthancException& e) | |
363 { | |
364 LOG(ERROR) << "EXCEPTION: " << e.What(); | |
365 } | |
366 | |
367 OrthancStone::SdlWindow::GlobalFinalize(); | |
368 Orthanc::Logging::Finalize(); | |
369 | |
370 return 0; | |
371 } |