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comparison Samples/Sdl/BasicScene.cpp @ 602:03c4b998fcd0

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display scene positions in the basic sample
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 29 Apr 2019 14:40:01 +0200
parents 6129b1e5ba42
children f4b37a991dac
comparison
equal deleted inserted replaced
600:6129b1e5ba42 602:03c4b998fcd0
37 #include <Core/Images/PngWriter.h> 37 #include <Core/Images/PngWriter.h>
38 38
39 #include <SDL.h> 39 #include <SDL.h>
40 #include <stdio.h> 40 #include <stdio.h>
41 41
42 static const unsigned int FONT_SIZE = 64; 42 static const unsigned int FONT_SIZE = 32;
43 static const int LAYER_POSITION = 150;
43 44
44 45
45 void PrepareScene(OrthancStone::Scene2D& scene) 46 void PrepareScene(OrthancStone::Scene2D& scene)
46 { 47 {
47 using namespace OrthancStone; 48 using namespace OrthancStone;
123 layer->SetColor(0,255, 255); 124 layer->SetColor(0,255, 255);
124 scene.SetLayer(50, layer.release()); 125 scene.SetLayer(50, layer.release());
125 } 126 }
126 127
127 // Some text 128 // Some text
128 scene.SetLayer(170, new TextSceneLayer(0, 0, "Hello", 0, BitmapAnchor_Center, 20)); 129 {
130 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer);
131 layer->SetText("Hello");
132 scene.SetLayer(100, layer.release());
133 }
129 } 134 }
130 135
131 136
132 void TakeScreenshot(const std::string& target, 137 void TakeScreenshot(const std::string& target,
133 const OrthancStone::Scene2D& scene, 138 const OrthancStone::Scene2D& scene,
154 const SDL_Event& event, 159 const SDL_Event& event,
155 std::auto_ptr<OrthancStone::IPointerTracker>& activeTracker, 160 std::auto_ptr<OrthancStone::IPointerTracker>& activeTracker,
156 unsigned int windowWidth, 161 unsigned int windowWidth,
157 unsigned int windowHeight) 162 unsigned int windowHeight)
158 { 163 {
159 if (event.type == SDL_MOUSEBUTTONDOWN) 164 bool hasPositionLayer = false;
165
166 if (event.type == SDL_MOUSEMOTION)
167 {
168 int scancodeCount = 0;
169 const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount);
170
171 if (activeTracker.get() == NULL &&
172 SDL_SCANCODE_LCTRL < scancodeCount &&
173 keyboardState[SDL_SCANCODE_LCTRL])
174 {
175 // The "left-ctrl" key is down, while no tracker is present
176
177 OrthancStone::PointerEvent e;
178 e.AddIntegerPosition(event.button.x - static_cast<int>(windowWidth) / 2,
179 event.button.y - static_cast<int>(windowHeight) / 2);
180 OrthancStone::ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform());
181
182 char buf[64];
183 sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY());
184
185 if (scene.HasLayer(LAYER_POSITION))
186 {
187 OrthancStone::TextSceneLayer& layer =
188 dynamic_cast<OrthancStone::TextSceneLayer&>(scene.GetLayer(LAYER_POSITION));
189 layer.SetText(buf);
190 layer.SetPosition(p.GetX(), p.GetY());
191 }
192 else
193 {
194 std::auto_ptr<OrthancStone::TextSceneLayer> layer(new OrthancStone::TextSceneLayer);
195 layer->SetColor(0, 255, 0);
196 layer->SetText(buf);
197 layer->SetBorder(20);
198 layer->SetAnchor(OrthancStone::BitmapAnchor_BottomCenter);
199 layer->SetPosition(p.GetX(), p.GetY());
200 scene.SetLayer(LAYER_POSITION, layer.release());
201 }
202
203 hasPositionLayer = true;
204 }
205 }
206 else if (event.type == SDL_MOUSEBUTTONDOWN)
160 { 207 {
161 OrthancStone::PointerEvent e; 208 OrthancStone::PointerEvent e;
162 e.AddIntegerPosition(event.button.x, event.button.y); 209 e.AddIntegerPosition(event.button.x, event.button.y);
163 210
164 switch (event.button.button) 211 switch (event.button.button)
195 break; 242 break;
196 243
197 default: 244 default:
198 break; 245 break;
199 } 246 }
247 }
248
249 if (!hasPositionLayer)
250 {
251 scene.DeleteLayer(LAYER_POSITION);
200 } 252 }
201 } 253 }
202 254
203 255
204 static void GLAPIENTRY 256 static void GLAPIENTRY
282 case SDLK_q: 334 case SDLK_q:
283 stop = true; 335 stop = true;
284 break; 336 break;
285 337
286 default: 338 default:
287 HandleApplicationEvent(scene, event, tracker, window.GetCanvasWidth(), window.GetCanvasHeight());
288 break; 339 break;
289 } 340 }
290 } 341 }
291 else 342
292 { 343 HandleApplicationEvent(scene, event, tracker, window.GetCanvasWidth(), window.GetCanvasHeight());
293 HandleApplicationEvent(scene, event, tracker, window.GetCanvasWidth(), window.GetCanvasHeight());
294 }
295 } 344 }
296 345
297 SDL_Delay(1); 346 SDL_Delay(1);
298 } 347 }
299 } 348 }