Mercurial > hg > orthanc-stone
comparison Samples/Sdl/BasicScene.cpp @ 600:6129b1e5ba42
BasicScene SDL sample
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 27 Apr 2019 12:38:25 +0200 |
parents | |
children | 03c4b998fcd0 |
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599:6da17230c7a3 | 600:6129b1e5ba42 |
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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 | |
42 static const unsigned int FONT_SIZE = 64; | |
43 | |
44 | |
45 void PrepareScene(OrthancStone::Scene2D& scene) | |
46 { | |
47 using namespace OrthancStone; | |
48 | |
49 // Texture of 2x2 size | |
50 { | |
51 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); | |
52 | |
53 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
54 p[0] = 255; | |
55 p[1] = 0; | |
56 p[2] = 0; | |
57 | |
58 p[3] = 0; | |
59 p[4] = 255; | |
60 p[5] = 0; | |
61 | |
62 p = reinterpret_cast<uint8_t*>(i.GetRow(1)); | |
63 p[0] = 0; | |
64 p[1] = 0; | |
65 p[2] = 255; | |
66 | |
67 p[3] = 255; | |
68 p[4] = 0; | |
69 p[5] = 0; | |
70 | |
71 scene.SetLayer(12, new ColorTextureSceneLayer(i)); | |
72 | |
73 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
74 l->SetOrigin(-3, 2); | |
75 l->SetPixelSpacing(1.5, 1); | |
76 l->SetAngle(20.0 / 180.0 * M_PI); | |
77 scene.SetLayer(14, l.release()); | |
78 } | |
79 | |
80 // Texture of 1x1 size | |
81 { | |
82 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); | |
83 | |
84 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); | |
85 p[0] = 255; | |
86 p[1] = 0; | |
87 p[2] = 0; | |
88 | |
89 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); | |
90 l->SetOrigin(-2, 1); | |
91 l->SetAngle(20.0 / 180.0 * M_PI); | |
92 scene.SetLayer(13, l.release()); | |
93 } | |
94 | |
95 // Some lines | |
96 { | |
97 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); | |
98 | |
99 layer->SetThickness(1); | |
100 | |
101 PolylineSceneLayer::Chain chain; | |
102 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); | |
103 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); | |
104 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); | |
105 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); | |
106 layer->AddChain(chain, true); | |
107 | |
108 chain.clear(); | |
109 chain.push_back(ScenePoint2D(-5, -5)); | |
110 chain.push_back(ScenePoint2D(5, -5)); | |
111 chain.push_back(ScenePoint2D(5, 5)); | |
112 chain.push_back(ScenePoint2D(-5, 5)); | |
113 layer->AddChain(chain, true); | |
114 | |
115 double dy = 1.01; | |
116 chain.clear(); | |
117 chain.push_back(ScenePoint2D(-4, -4)); | |
118 chain.push_back(ScenePoint2D(4, -4 + dy)); | |
119 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); | |
120 chain.push_back(ScenePoint2D(4, 2)); | |
121 layer->AddChain(chain, false); | |
122 | |
123 layer->SetColor(0,255, 255); | |
124 scene.SetLayer(50, layer.release()); | |
125 } | |
126 | |
127 // Some text | |
128 scene.SetLayer(170, new TextSceneLayer(0, 0, "Hello", 0, BitmapAnchor_Center, 20)); | |
129 } | |
130 | |
131 | |
132 void TakeScreenshot(const std::string& target, | |
133 const OrthancStone::Scene2D& scene, | |
134 unsigned int canvasWidth, | |
135 unsigned int canvasHeight) | |
136 { | |
137 // Take a screenshot, then save it as PNG file | |
138 OrthancStone::CairoCompositor compositor(scene, canvasWidth, canvasHeight); | |
139 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); | |
140 compositor.Refresh(); | |
141 | |
142 Orthanc::ImageAccessor canvas; | |
143 compositor.GetCanvas().GetReadOnlyAccessor(canvas); | |
144 | |
145 Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false); | |
146 Orthanc::ImageProcessing::Convert(png, canvas); | |
147 | |
148 Orthanc::PngWriter writer; | |
149 writer.WriteToFile(target, png); | |
150 } | |
151 | |
152 | |
153 void HandleApplicationEvent(OrthancStone::Scene2D& scene, | |
154 const SDL_Event& event, | |
155 std::auto_ptr<OrthancStone::IPointerTracker>& activeTracker, | |
156 unsigned int windowWidth, | |
157 unsigned int windowHeight) | |
158 { | |
159 if (event.type == SDL_MOUSEBUTTONDOWN) | |
160 { | |
161 OrthancStone::PointerEvent e; | |
162 e.AddIntegerPosition(event.button.x, event.button.y); | |
163 | |
164 switch (event.button.button) | |
165 { | |
166 case SDL_BUTTON_MIDDLE: | |
167 activeTracker.reset(new OrthancStone::PanSceneTracker(scene, e)); | |
168 break; | |
169 | |
170 case SDL_BUTTON_RIGHT: | |
171 activeTracker.reset(new OrthancStone::ZoomSceneTracker | |
172 (scene, e, windowWidth, windowHeight)); | |
173 break; | |
174 | |
175 case SDL_BUTTON_LEFT: | |
176 activeTracker.reset(new OrthancStone::RotateSceneTracker | |
177 (scene, e, windowWidth, windowHeight)); | |
178 break; | |
179 | |
180 default: | |
181 break; | |
182 } | |
183 } | |
184 else if (event.type == SDL_KEYDOWN && | |
185 event.key.repeat == 0 /* Ignore key bounce */) | |
186 { | |
187 switch (event.key.keysym.sym) | |
188 { | |
189 case SDLK_s: | |
190 scene.FitContent(windowWidth, windowHeight); | |
191 break; | |
192 | |
193 case SDLK_c: | |
194 TakeScreenshot("screenshot.png", scene, windowWidth, windowHeight); | |
195 break; | |
196 | |
197 default: | |
198 break; | |
199 } | |
200 } | |
201 } | |
202 | |
203 | |
204 static void GLAPIENTRY | |
205 OpenGLMessageCallback(GLenum source, | |
206 GLenum type, | |
207 GLuint id, | |
208 GLenum severity, | |
209 GLsizei length, | |
210 const GLchar* message, | |
211 const void* userParam ) | |
212 { | |
213 if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) | |
214 { | |
215 fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", | |
216 ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), | |
217 type, severity, message ); | |
218 } | |
219 } | |
220 | |
221 | |
222 void Run(OrthancStone::Scene2D& scene) | |
223 { | |
224 OrthancStone::SdlOpenGLWindow window("Hello", 1024, 768); | |
225 scene.FitContent(window.GetCanvasWidth(), window.GetCanvasHeight()); | |
226 | |
227 glEnable(GL_DEBUG_OUTPUT); | |
228 glDebugMessageCallback(OpenGLMessageCallback, 0 ); | |
229 | |
230 OrthancStone::OpenGLCompositor compositor(window, scene); | |
231 compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, | |
232 FONT_SIZE, Orthanc::Encoding_Latin1); | |
233 | |
234 std::auto_ptr<OrthancStone::IPointerTracker> tracker; | |
235 | |
236 bool stop = false; | |
237 while (!stop) | |
238 { | |
239 compositor.Refresh(); | |
240 | |
241 SDL_Event event; | |
242 while (!stop && | |
243 SDL_PollEvent(&event)) | |
244 { | |
245 if (event.type == SDL_QUIT) | |
246 { | |
247 stop = true; | |
248 break; | |
249 } | |
250 else if (event.type == SDL_MOUSEMOTION) | |
251 { | |
252 if (tracker.get() != NULL) | |
253 { | |
254 OrthancStone::PointerEvent e; | |
255 e.AddIntegerPosition(event.button.x, event.button.y); | |
256 tracker->Update(e); | |
257 } | |
258 } | |
259 else if (event.type == SDL_MOUSEBUTTONUP) | |
260 { | |
261 if (tracker.get() != NULL) | |
262 { | |
263 tracker->Release(); | |
264 tracker.reset(NULL); | |
265 } | |
266 } | |
267 else if (event.type == SDL_WINDOWEVENT && | |
268 event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED) | |
269 { | |
270 tracker.reset(NULL); | |
271 compositor.UpdateSize(); | |
272 } | |
273 else if (event.type == SDL_KEYDOWN && | |
274 event.key.repeat == 0 /* Ignore key bounce */) | |
275 { | |
276 switch (event.key.keysym.sym) | |
277 { | |
278 case SDLK_f: | |
279 window.GetWindow().ToggleMaximize(); | |
280 break; | |
281 | |
282 case SDLK_q: | |
283 stop = true; | |
284 break; | |
285 | |
286 default: | |
287 HandleApplicationEvent(scene, event, tracker, window.GetCanvasWidth(), window.GetCanvasHeight()); | |
288 break; | |
289 } | |
290 } | |
291 else | |
292 { | |
293 HandleApplicationEvent(scene, event, tracker, window.GetCanvasWidth(), window.GetCanvasHeight()); | |
294 } | |
295 } | |
296 | |
297 SDL_Delay(1); | |
298 } | |
299 } | |
300 | |
301 | |
302 int main() | |
303 { | |
304 Orthanc::Logging::Initialize(); | |
305 OrthancStone::SdlWindow::GlobalInitialize(); | |
306 | |
307 try | |
308 { | |
309 OrthancStone::Scene2D scene; | |
310 PrepareScene(scene); | |
311 Run(scene); | |
312 } | |
313 catch (Orthanc::OrthancException& e) | |
314 { | |
315 LOG(ERROR) << "EXCEPTION: " << e.What(); | |
316 } | |
317 | |
318 OrthancStone::SdlWindow::GlobalFinalize(); | |
319 Orthanc::Logging::Finalize(); | |
320 | |
321 return 0; | |
322 } |