Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayeredSceneWidget.cpp @ 54:01aa453d4d5b wasm
IWidget::HasRenderMouseOver
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Thu, 27 Apr 2017 17:49:29 +0200 |
parents | c2dc924f1a63 |
children | ca644004d2ee |
rev | line source |
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0 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
40
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5 * Copyright (C) 2017 Osimis, Belgium |
0 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
47 | 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. | |
0 | 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 | |
47 | 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 | |
0 | 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 **/ | |
20 | |
21 | |
22 #define _USE_MATH_DEFINES // To access M_PI in Visual Studio | |
23 #include <cmath> | |
24 | |
25 #include "LayeredSceneWidget.h" | |
26 | |
16 | 27 #include "../../Resources/Orthanc/Core/OrthancException.h" |
0 | 28 |
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29 #include <boost/thread/condition_variable.hpp> // TODO Remove |
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30 |
0 | 31 namespace OrthancStone |
32 { | |
33 class LayeredSceneWidget::Renderers : public boost::noncopyable | |
34 { | |
35 private: | |
36 boost::mutex mutex_; | |
37 std::vector<ILayerRenderer*> renderers_; | |
38 std::vector<bool> assigned_; | |
39 | |
40 void Assign(size_t index, | |
41 ILayerRenderer* renderer) | |
42 { | |
43 if (index >= renderers_.size()) | |
44 { | |
45 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
46 } | |
47 | |
48 if (renderers_[index] != NULL) | |
49 { | |
50 delete renderers_[index]; | |
51 } | |
52 | |
53 renderers_[index] = renderer; | |
54 assigned_[index] = true; | |
55 } | |
56 | |
57 public: | |
58 Renderers(size_t size) | |
59 { | |
60 renderers_.resize(size); | |
61 assigned_.resize(size, false); | |
62 } | |
63 | |
64 ~Renderers() | |
65 { | |
66 for (size_t i = 0; i < renderers_.size(); i++) | |
67 { | |
68 Assign(i, NULL); | |
69 } | |
70 } | |
71 | |
72 static void Merge(Renderers& target, | |
73 Renderers& source) | |
74 { | |
75 boost::mutex::scoped_lock lockSource(source.mutex_); | |
76 boost::mutex::scoped_lock lockTarget(target.mutex_); | |
77 | |
78 size_t count = target.renderers_.size(); | |
79 if (count != source.renderers_.size()) | |
80 { | |
81 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
82 } | |
83 | |
84 for (size_t i = 0; i < count; i++) | |
85 { | |
86 if (source.assigned_[i]) | |
87 { | |
88 target.Assign(i, source.renderers_[i]); // Transfers ownership | |
89 source.renderers_[i] = NULL; | |
90 source.assigned_[i] = false; | |
91 } | |
92 } | |
93 } | |
94 | |
95 void SetRenderer(size_t index, | |
96 ILayerRenderer* renderer) // Takes ownership | |
97 { | |
98 boost::mutex::scoped_lock lock(mutex_); | |
99 Assign(index, renderer); | |
100 } | |
101 | |
102 bool RenderScene(CairoContext& context, | |
103 const ViewportGeometry& view) | |
104 { | |
105 boost::mutex::scoped_lock lock(mutex_); | |
106 | |
107 bool fullQuality = true; | |
108 | |
109 for (size_t i = 0; i < renderers_.size(); i++) | |
110 { | |
111 if (renderers_[i] != NULL && | |
112 !renderers_[i]->RenderLayer(context, view)) | |
113 { | |
114 return false; | |
115 } | |
116 | |
117 if (renderers_[i] != NULL && | |
118 !renderers_[i]->IsFullQuality()) | |
119 { | |
120 fullQuality = false; | |
121 } | |
122 } | |
123 | |
124 if (!fullQuality) | |
125 { | |
126 double x, y; | |
127 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10); | |
128 | |
129 cairo_t *cr = context.GetObject(); | |
130 cairo_translate(cr, x, y); | |
131 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI); | |
132 cairo_set_line_width(cr, 2.0 / view.GetZoom()); | |
133 cairo_set_source_rgb(cr, 1, 1, 1); | |
134 cairo_stroke_preserve(cr); | |
135 cairo_set_source_rgb(cr, 1, 0, 0); | |
136 cairo_fill(cr); | |
137 } | |
138 | |
139 return true; | |
140 } | |
141 | |
142 void SetLayerStyle(size_t index, | |
143 const RenderStyle& style) | |
144 { | |
145 boost::mutex::scoped_lock lock(mutex_); | |
146 | |
147 if (renderers_[index] != NULL) | |
148 { | |
149 renderers_[index]->SetLayerStyle(style); | |
150 } | |
151 } | |
152 }; | |
153 | |
154 | |
155 | |
156 class LayeredSceneWidget::PendingLayers : public boost::noncopyable | |
157 { | |
158 private: | |
159 boost::mutex mutex_; | |
160 boost::condition_variable elementAvailable_; | |
161 size_t layerCount_; | |
162 std::list<size_t> queue_; | |
163 std::vector<bool> layersToUpdate_; | |
164 bool continue_; | |
165 | |
166 void TagAllLayers() | |
167 { | |
168 queue_.clear(); | |
169 | |
170 for (unsigned int i = 0; i < layerCount_; i++) | |
171 { | |
172 queue_.push_back(i); | |
173 layersToUpdate_[i] = true; | |
174 } | |
175 | |
176 if (layerCount_ != 0) | |
177 { | |
178 elementAvailable_.notify_one(); | |
179 } | |
180 } | |
181 | |
182 public: | |
183 PendingLayers() : | |
184 layerCount_(0), | |
185 continue_(true) | |
186 { | |
187 } | |
188 | |
189 void Stop() | |
190 { | |
191 continue_ = false; | |
192 elementAvailable_.notify_one(); | |
193 } | |
194 | |
195 void SetLayerCount(size_t count) | |
196 { | |
197 boost::mutex::scoped_lock lock(mutex_); | |
198 | |
199 layerCount_ = count; | |
200 layersToUpdate_.resize(count); | |
201 | |
202 TagAllLayers(); | |
203 } | |
204 | |
205 void InvalidateAllLayers() | |
206 { | |
207 boost::mutex::scoped_lock lock(mutex_); | |
208 TagAllLayers(); | |
209 } | |
210 | |
211 void InvalidateLayer(size_t layer) | |
212 { | |
213 boost::mutex::scoped_lock lock(mutex_); | |
214 | |
215 if (layer < layerCount_) | |
216 { | |
217 if (layersToUpdate_[layer]) | |
218 { | |
219 // The layer is already scheduled for update, ignore this | |
220 // invalidation | |
221 } | |
222 else | |
223 { | |
224 queue_.push_back(layer); | |
225 layersToUpdate_[layer] = true; | |
226 elementAvailable_.notify_one(); | |
227 } | |
228 } | |
229 } | |
230 | |
231 bool Dequeue(size_t& layer, | |
232 bool& isLast) | |
233 { | |
234 boost::mutex::scoped_lock lock(mutex_); | |
235 | |
236 // WARNING: Do NOT use "timed_wait" on condition variables, as | |
237 // sleeping is not properly supported by Boost for Google NaCl | |
238 while (queue_.empty() && | |
239 continue_) | |
240 { | |
241 elementAvailable_.wait(lock); | |
242 } | |
243 | |
244 if (!continue_) | |
245 { | |
246 return false; | |
247 } | |
248 | |
249 layer = queue_.front(); | |
250 layersToUpdate_[layer] = false; | |
251 queue_.pop_front(); | |
252 | |
253 isLast = queue_.empty(); | |
254 | |
255 return true; | |
256 } | |
257 }; | |
258 | |
259 | |
260 class LayeredSceneWidget::Layer : public ISliceableVolume::IChangeObserver | |
261 { | |
262 private: | |
263 boost::mutex mutex_; | |
264 std::auto_ptr<ILayerRendererFactory> factory_; | |
265 PendingLayers& layers_; | |
266 size_t index_; | |
267 std::auto_ptr<RenderStyle> style_; | |
268 | |
269 public: | |
270 Layer(ILayerRendererFactory* factory, | |
271 PendingLayers& layers, | |
272 size_t index) : | |
273 factory_(factory), | |
274 layers_(layers), | |
275 index_(index) | |
276 { | |
277 if (factory == NULL) | |
278 { | |
279 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
280 } | |
281 } | |
282 | |
283 virtual void NotifyChange(const OrthancStone::ISliceableVolume&) | |
284 { | |
285 layers_.InvalidateLayer(index_); | |
286 } | |
287 | |
288 void Start() | |
289 { | |
290 if (factory_->HasSourceVolume()) | |
291 { | |
292 factory_->GetSourceVolume().Register(*this); | |
293 } | |
294 } | |
295 | |
296 void Stop() | |
297 { | |
298 if (factory_->HasSourceVolume()) | |
299 { | |
300 factory_->GetSourceVolume().Unregister(*this); | |
301 } | |
302 } | |
303 | |
304 bool GetExtent(double& x1, | |
305 double& y1, | |
306 double& x2, | |
307 double& y2, | |
308 const SliceGeometry& displaySlice) | |
309 { | |
310 boost::mutex::scoped_lock lock(mutex_); | |
311 assert(factory_.get() != NULL); | |
312 return factory_->GetExtent(x1, y1, x2, y2, displaySlice); | |
313 } | |
314 | |
315 RenderStyle GetStyle() | |
316 { | |
317 boost::mutex::scoped_lock lock(mutex_); | |
318 | |
319 if (style_.get() == NULL) | |
320 { | |
321 return RenderStyle(); | |
322 } | |
323 else | |
324 { | |
325 return *style_; | |
326 } | |
327 } | |
328 | |
329 void SetStyle(const RenderStyle& style) | |
330 { | |
331 boost::mutex::scoped_lock lock(mutex_); | |
332 style_.reset(new RenderStyle(style)); | |
333 } | |
334 | |
335 | |
336 ILayerRenderer* CreateRenderer(const SliceGeometry& displaySlice) | |
337 { | |
338 boost::mutex::scoped_lock lock(mutex_); | |
339 assert(factory_.get() != NULL); | |
340 | |
341 std::auto_ptr<ILayerRenderer> renderer(factory_->CreateLayerRenderer(displaySlice)); | |
342 | |
343 if (renderer.get() != NULL && | |
344 style_.get() != NULL) | |
345 { | |
346 renderer->SetLayerStyle(*style_); | |
347 } | |
348 | |
349 return renderer.release(); | |
350 } | |
351 }; | |
352 | |
353 | |
354 | |
355 SliceGeometry LayeredSceneWidget::GetSlice() | |
356 { | |
357 boost::mutex::scoped_lock lock(sliceMutex_); | |
358 return slice_; | |
359 } | |
360 | |
361 | |
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362 void LayeredSceneWidget::UpdateContent() |
0 | 363 { |
364 size_t layer = 0; | |
365 bool isLast = true; | |
366 if (!pendingLayers_->Dequeue(layer, isLast)) | |
367 { | |
368 return; | |
369 } | |
370 | |
371 SliceGeometry slice = GetSlice(); | |
372 | |
373 std::auto_ptr<ILayerRenderer> renderer; | |
374 renderer.reset(layers_[layer]->CreateRenderer(slice)); | |
375 | |
376 if (renderer.get() != NULL) | |
377 { | |
378 pendingRenderers_->SetRenderer(layer, renderer.release()); | |
379 } | |
380 else | |
381 { | |
382 pendingRenderers_->SetRenderer(layer, NULL); | |
383 } | |
384 | |
385 if (isLast) | |
386 { | |
387 Renderers::Merge(*renderers_, *pendingRenderers_); | |
388 NotifyChange(); | |
389 } | |
44 | 390 |
391 // TODO Add sleep at this point | |
0 | 392 } |
393 | |
394 | |
395 bool LayeredSceneWidget::RenderScene(CairoContext& context, | |
396 const ViewportGeometry& view) | |
397 { | |
398 assert(IsStarted()); | |
399 return renderers_->RenderScene(context, view); | |
400 } | |
401 | |
402 | |
403 LayeredSceneWidget::LayeredSceneWidget() | |
404 { | |
405 pendingLayers_.reset(new PendingLayers); | |
406 SetBackgroundCleared(true); | |
407 } | |
408 | |
409 | |
410 LayeredSceneWidget::~LayeredSceneWidget() | |
411 { | |
412 for (size_t i = 0; i < layers_.size(); i++) | |
413 { | |
414 assert(layers_[i] != NULL); | |
415 delete layers_[i]; | |
416 } | |
417 } | |
418 | |
419 | |
420 void LayeredSceneWidget::GetSceneExtent(double& x1, | |
421 double& y1, | |
422 double& x2, | |
423 double& y2) | |
424 { | |
425 boost::mutex::scoped_lock lock(sliceMutex_); | |
426 | |
427 bool first = true; | |
428 | |
429 for (size_t i = 0; i < layers_.size(); i++) | |
430 { | |
431 double ax, ay, bx, by; | |
432 | |
433 assert(layers_[i] != NULL); | |
434 if (layers_[i]->GetExtent(ax, ay, bx, by, slice_)) | |
435 { | |
436 if (ax > bx) | |
437 { | |
438 std::swap(ax, bx); | |
439 } | |
440 | |
441 if (ay > by) | |
442 { | |
443 std::swap(ay, by); | |
444 } | |
445 | |
446 if (first) | |
447 { | |
448 x1 = ax; | |
449 y1 = ay; | |
450 x2 = bx; | |
451 y2 = by; | |
452 first = false; | |
453 } | |
454 else | |
455 { | |
456 x1 = std::min(x1, ax); | |
457 y1 = std::min(y1, ay); | |
458 x2 = std::max(x2, bx); | |
459 y2 = std::max(y2, by); | |
460 } | |
461 } | |
462 } | |
463 | |
464 if (first) | |
465 { | |
466 x1 = -1; | |
467 y1 = -1; | |
468 x2 = 1; | |
469 y2 = 1; | |
470 } | |
471 | |
472 // Ensure the extent is non-empty | |
473 if (x1 >= x2) | |
474 { | |
475 double tmp = x1; | |
476 x1 = tmp - 0.5; | |
477 x2 = tmp + 0.5; | |
478 } | |
479 | |
480 if (y1 >= y2) | |
481 { | |
482 double tmp = y1; | |
483 y1 = tmp - 0.5; | |
484 y2 = tmp + 0.5; | |
485 } | |
486 } | |
487 | |
488 | |
489 | |
490 ILayerRendererFactory& LayeredSceneWidget::AddLayer(size_t& layerIndex, | |
491 ILayerRendererFactory* factory) | |
492 { | |
493 if (IsStarted()) | |
494 { | |
495 // Start() has already been invoked | |
496 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
497 } | |
498 | |
499 layerIndex = layers_.size(); | |
500 layers_.push_back(new Layer(factory, *pendingLayers_, layers_.size())); | |
501 | |
502 return *factory; | |
503 } | |
504 | |
505 | |
506 void LayeredSceneWidget::AddLayer(ILayerRendererFactory* factory) | |
507 { | |
508 size_t layerIndex; // Ignored | |
509 AddLayer(layerIndex, factory); | |
510 } | |
511 | |
512 | |
513 RenderStyle LayeredSceneWidget::GetLayerStyle(size_t layer) | |
514 { | |
515 if (layer >= layers_.size()) | |
516 { | |
517 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
518 } | |
519 | |
520 return layers_[layer]->GetStyle(); | |
521 } | |
522 | |
523 | |
524 void LayeredSceneWidget::SetLayerStyle(size_t layer, | |
525 const RenderStyle& style) | |
526 { | |
527 if (layer >= layers_.size()) | |
528 { | |
529 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
530 } | |
531 | |
532 layers_[layer]->SetStyle(style); | |
533 | |
534 if (renderers_.get() != NULL) | |
535 { | |
536 renderers_->SetLayerStyle(layer, style); | |
537 } | |
538 | |
539 InvalidateLayer(layer); | |
540 } | |
541 | |
542 | |
543 | |
544 struct LayeredSceneWidget::SliceChangeFunctor | |
545 { | |
546 const SliceGeometry& slice_; | |
547 | |
548 SliceChangeFunctor(const SliceGeometry& slice) : | |
549 slice_(slice) | |
550 { | |
551 } | |
552 | |
553 void operator() (ISliceObserver& observer, | |
554 const LayeredSceneWidget& source) | |
555 { | |
556 observer.NotifySliceChange(source, slice_); | |
557 } | |
558 }; | |
559 | |
560 | |
561 void LayeredSceneWidget::SetSlice(const SliceGeometry& slice) | |
562 { | |
563 { | |
564 boost::mutex::scoped_lock lock(sliceMutex_); | |
565 slice_ = slice; | |
566 } | |
567 | |
568 InvalidateAllLayers(); | |
569 | |
570 SliceChangeFunctor functor(slice); | |
571 observers_.Notify(this, functor); | |
572 } | |
573 | |
574 | |
575 void LayeredSceneWidget::InvalidateLayer(unsigned int layer) | |
576 { | |
577 pendingLayers_->InvalidateLayer(layer); | |
578 //NotifyChange(); // TODO Understand why this makes the SDL engine not update the display subsequently | |
579 } | |
580 | |
581 | |
582 void LayeredSceneWidget::InvalidateAllLayers() | |
583 { | |
584 pendingLayers_->InvalidateAllLayers(); | |
585 //NotifyChange(); // TODO Understand why this makes the SDL engine not update the display subsequently | |
586 } | |
587 | |
588 | |
589 void LayeredSceneWidget::Start() | |
590 { | |
591 if (IsStarted()) | |
592 { | |
593 // Start() has already been invoked | |
594 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
595 } | |
596 | |
597 for (size_t i = 0; i < layers_.size(); i++) | |
598 { | |
599 layers_[i]->Start(); | |
600 } | |
601 | |
602 renderers_.reset(new Renderers(layers_.size())); | |
603 pendingRenderers_.reset(new Renderers(layers_.size())); | |
604 | |
605 pendingLayers_->SetLayerCount(layers_.size()); | |
606 | |
607 WorldSceneWidget::Start(); | |
608 } | |
609 | |
610 | |
611 void LayeredSceneWidget::Stop() | |
612 { | |
613 if (!IsStarted()) | |
614 { | |
615 // Stop() has already been invoked | |
616 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
617 } | |
618 | |
619 pendingLayers_->Stop(); | |
620 WorldSceneWidget::Stop(); | |
621 | |
622 renderers_.reset(NULL); | |
623 pendingRenderers_.reset(NULL); | |
624 | |
625 for (size_t i = 0; i < layers_.size(); i++) | |
626 { | |
627 layers_[i]->Stop(); | |
628 } | |
629 } | |
630 } |