Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayeredSceneWidget.cpp @ 134:4cff7b1ed31d
upgrade to year 2018
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 02 Jan 2018 09:51:36 +0100 |
parents | 28956ed68280 |
children |
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 | |
134
4cff7b1ed31d
upgrade to year 2018
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
47
diff
changeset
|
5 * Copyright (C) 2017-2018 Osimis S.A., 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 |
29 namespace OrthancStone | |
30 { | |
31 class LayeredSceneWidget::Renderers : public boost::noncopyable | |
32 { | |
33 private: | |
34 boost::mutex mutex_; | |
35 std::vector<ILayerRenderer*> renderers_; | |
36 std::vector<bool> assigned_; | |
37 | |
38 void Assign(size_t index, | |
39 ILayerRenderer* renderer) | |
40 { | |
41 if (index >= renderers_.size()) | |
42 { | |
43 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
44 } | |
45 | |
46 if (renderers_[index] != NULL) | |
47 { | |
48 delete renderers_[index]; | |
49 } | |
50 | |
51 renderers_[index] = renderer; | |
52 assigned_[index] = true; | |
53 } | |
54 | |
55 public: | |
56 Renderers(size_t size) | |
57 { | |
58 renderers_.resize(size); | |
59 assigned_.resize(size, false); | |
60 } | |
61 | |
62 ~Renderers() | |
63 { | |
64 for (size_t i = 0; i < renderers_.size(); i++) | |
65 { | |
66 Assign(i, NULL); | |
67 } | |
68 } | |
69 | |
70 static void Merge(Renderers& target, | |
71 Renderers& source) | |
72 { | |
73 boost::mutex::scoped_lock lockSource(source.mutex_); | |
74 boost::mutex::scoped_lock lockTarget(target.mutex_); | |
75 | |
76 size_t count = target.renderers_.size(); | |
77 if (count != source.renderers_.size()) | |
78 { | |
79 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
80 } | |
81 | |
82 for (size_t i = 0; i < count; i++) | |
83 { | |
84 if (source.assigned_[i]) | |
85 { | |
86 target.Assign(i, source.renderers_[i]); // Transfers ownership | |
87 source.renderers_[i] = NULL; | |
88 source.assigned_[i] = false; | |
89 } | |
90 } | |
91 } | |
92 | |
93 void SetRenderer(size_t index, | |
94 ILayerRenderer* renderer) // Takes ownership | |
95 { | |
96 boost::mutex::scoped_lock lock(mutex_); | |
97 Assign(index, renderer); | |
98 } | |
99 | |
100 bool RenderScene(CairoContext& context, | |
101 const ViewportGeometry& view) | |
102 { | |
103 boost::mutex::scoped_lock lock(mutex_); | |
104 | |
105 bool fullQuality = true; | |
106 | |
107 for (size_t i = 0; i < renderers_.size(); i++) | |
108 { | |
109 if (renderers_[i] != NULL && | |
110 !renderers_[i]->RenderLayer(context, view)) | |
111 { | |
112 return false; | |
113 } | |
114 | |
115 if (renderers_[i] != NULL && | |
116 !renderers_[i]->IsFullQuality()) | |
117 { | |
118 fullQuality = false; | |
119 } | |
120 } | |
121 | |
122 if (!fullQuality) | |
123 { | |
124 double x, y; | |
125 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10); | |
126 | |
127 cairo_t *cr = context.GetObject(); | |
128 cairo_translate(cr, x, y); | |
129 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI); | |
130 cairo_set_line_width(cr, 2.0 / view.GetZoom()); | |
131 cairo_set_source_rgb(cr, 1, 1, 1); | |
132 cairo_stroke_preserve(cr); | |
133 cairo_set_source_rgb(cr, 1, 0, 0); | |
134 cairo_fill(cr); | |
135 } | |
136 | |
137 return true; | |
138 } | |
139 | |
140 void SetLayerStyle(size_t index, | |
141 const RenderStyle& style) | |
142 { | |
143 boost::mutex::scoped_lock lock(mutex_); | |
144 | |
145 if (renderers_[index] != NULL) | |
146 { | |
147 renderers_[index]->SetLayerStyle(style); | |
148 } | |
149 } | |
150 }; | |
151 | |
152 | |
153 | |
154 class LayeredSceneWidget::PendingLayers : public boost::noncopyable | |
155 { | |
156 private: | |
157 boost::mutex mutex_; | |
158 boost::condition_variable elementAvailable_; | |
159 size_t layerCount_; | |
160 std::list<size_t> queue_; | |
161 std::vector<bool> layersToUpdate_; | |
162 bool continue_; | |
163 | |
164 void TagAllLayers() | |
165 { | |
166 queue_.clear(); | |
167 | |
168 for (unsigned int i = 0; i < layerCount_; i++) | |
169 { | |
170 queue_.push_back(i); | |
171 layersToUpdate_[i] = true; | |
172 } | |
173 | |
174 if (layerCount_ != 0) | |
175 { | |
176 elementAvailable_.notify_one(); | |
177 } | |
178 } | |
179 | |
180 public: | |
181 PendingLayers() : | |
182 layerCount_(0), | |
183 continue_(true) | |
184 { | |
185 } | |
186 | |
187 void Stop() | |
188 { | |
189 continue_ = false; | |
190 elementAvailable_.notify_one(); | |
191 } | |
192 | |
193 void SetLayerCount(size_t count) | |
194 { | |
195 boost::mutex::scoped_lock lock(mutex_); | |
196 | |
197 layerCount_ = count; | |
198 layersToUpdate_.resize(count); | |
199 | |
200 TagAllLayers(); | |
201 } | |
202 | |
203 void InvalidateAllLayers() | |
204 { | |
205 boost::mutex::scoped_lock lock(mutex_); | |
206 TagAllLayers(); | |
207 } | |
208 | |
209 void InvalidateLayer(size_t layer) | |
210 { | |
211 boost::mutex::scoped_lock lock(mutex_); | |
212 | |
213 if (layer < layerCount_) | |
214 { | |
215 if (layersToUpdate_[layer]) | |
216 { | |
217 // The layer is already scheduled for update, ignore this | |
218 // invalidation | |
219 } | |
220 else | |
221 { | |
222 queue_.push_back(layer); | |
223 layersToUpdate_[layer] = true; | |
224 elementAvailable_.notify_one(); | |
225 } | |
226 } | |
227 } | |
228 | |
229 bool Dequeue(size_t& layer, | |
230 bool& isLast) | |
231 { | |
232 boost::mutex::scoped_lock lock(mutex_); | |
233 | |
234 // WARNING: Do NOT use "timed_wait" on condition variables, as | |
235 // sleeping is not properly supported by Boost for Google NaCl | |
236 while (queue_.empty() && | |
237 continue_) | |
238 { | |
239 elementAvailable_.wait(lock); | |
240 } | |
241 | |
242 if (!continue_) | |
243 { | |
244 return false; | |
245 } | |
246 | |
247 layer = queue_.front(); | |
248 layersToUpdate_[layer] = false; | |
249 queue_.pop_front(); | |
250 | |
251 isLast = queue_.empty(); | |
252 | |
253 return true; | |
254 } | |
255 }; | |
256 | |
257 | |
258 class LayeredSceneWidget::Layer : public ISliceableVolume::IChangeObserver | |
259 { | |
260 private: | |
261 boost::mutex mutex_; | |
262 std::auto_ptr<ILayerRendererFactory> factory_; | |
263 PendingLayers& layers_; | |
264 size_t index_; | |
265 std::auto_ptr<RenderStyle> style_; | |
266 | |
267 public: | |
268 Layer(ILayerRendererFactory* factory, | |
269 PendingLayers& layers, | |
270 size_t index) : | |
271 factory_(factory), | |
272 layers_(layers), | |
273 index_(index) | |
274 { | |
275 if (factory == NULL) | |
276 { | |
277 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
278 } | |
279 } | |
280 | |
281 virtual void NotifyChange(const OrthancStone::ISliceableVolume&) | |
282 { | |
283 layers_.InvalidateLayer(index_); | |
284 } | |
285 | |
286 void Start() | |
287 { | |
288 if (factory_->HasSourceVolume()) | |
289 { | |
290 factory_->GetSourceVolume().Register(*this); | |
291 } | |
292 } | |
293 | |
294 void Stop() | |
295 { | |
296 if (factory_->HasSourceVolume()) | |
297 { | |
298 factory_->GetSourceVolume().Unregister(*this); | |
299 } | |
300 } | |
301 | |
302 bool GetExtent(double& x1, | |
303 double& y1, | |
304 double& x2, | |
305 double& y2, | |
306 const SliceGeometry& displaySlice) | |
307 { | |
308 boost::mutex::scoped_lock lock(mutex_); | |
309 assert(factory_.get() != NULL); | |
310 return factory_->GetExtent(x1, y1, x2, y2, displaySlice); | |
311 } | |
312 | |
313 RenderStyle GetStyle() | |
314 { | |
315 boost::mutex::scoped_lock lock(mutex_); | |
316 | |
317 if (style_.get() == NULL) | |
318 { | |
319 return RenderStyle(); | |
320 } | |
321 else | |
322 { | |
323 return *style_; | |
324 } | |
325 } | |
326 | |
327 void SetStyle(const RenderStyle& style) | |
328 { | |
329 boost::mutex::scoped_lock lock(mutex_); | |
330 style_.reset(new RenderStyle(style)); | |
331 } | |
332 | |
333 | |
334 ILayerRenderer* CreateRenderer(const SliceGeometry& displaySlice) | |
335 { | |
336 boost::mutex::scoped_lock lock(mutex_); | |
337 assert(factory_.get() != NULL); | |
338 | |
339 std::auto_ptr<ILayerRenderer> renderer(factory_->CreateLayerRenderer(displaySlice)); | |
340 | |
341 if (renderer.get() != NULL && | |
342 style_.get() != NULL) | |
343 { | |
344 renderer->SetLayerStyle(*style_); | |
345 } | |
346 | |
347 return renderer.release(); | |
348 } | |
349 }; | |
350 | |
351 | |
352 | |
353 SliceGeometry LayeredSceneWidget::GetSlice() | |
354 { | |
355 boost::mutex::scoped_lock lock(sliceMutex_); | |
356 return slice_; | |
357 } | |
358 | |
359 | |
360 void LayeredSceneWidget::UpdateStep() | |
361 { | |
362 size_t layer = 0; | |
363 bool isLast = true; | |
364 if (!pendingLayers_->Dequeue(layer, isLast)) | |
365 { | |
366 return; | |
367 } | |
368 | |
369 SliceGeometry slice = GetSlice(); | |
370 | |
371 std::auto_ptr<ILayerRenderer> renderer; | |
372 renderer.reset(layers_[layer]->CreateRenderer(slice)); | |
373 | |
374 if (renderer.get() != NULL) | |
375 { | |
376 pendingRenderers_->SetRenderer(layer, renderer.release()); | |
377 } | |
378 else | |
379 { | |
380 pendingRenderers_->SetRenderer(layer, NULL); | |
381 } | |
382 | |
383 if (isLast) | |
384 { | |
385 Renderers::Merge(*renderers_, *pendingRenderers_); | |
386 NotifyChange(); | |
387 } | |
44 | 388 |
389 // TODO Add sleep at this point | |
0 | 390 } |
391 | |
392 | |
393 bool LayeredSceneWidget::RenderScene(CairoContext& context, | |
394 const ViewportGeometry& view) | |
395 { | |
396 assert(IsStarted()); | |
397 return renderers_->RenderScene(context, view); | |
398 } | |
399 | |
400 | |
401 LayeredSceneWidget::LayeredSceneWidget() | |
402 { | |
403 pendingLayers_.reset(new PendingLayers); | |
404 SetBackgroundCleared(true); | |
405 } | |
406 | |
407 | |
408 LayeredSceneWidget::~LayeredSceneWidget() | |
409 { | |
410 for (size_t i = 0; i < layers_.size(); i++) | |
411 { | |
412 assert(layers_[i] != NULL); | |
413 delete layers_[i]; | |
414 } | |
415 } | |
416 | |
417 | |
418 void LayeredSceneWidget::GetSceneExtent(double& x1, | |
419 double& y1, | |
420 double& x2, | |
421 double& y2) | |
422 { | |
423 boost::mutex::scoped_lock lock(sliceMutex_); | |
424 | |
425 bool first = true; | |
426 | |
427 for (size_t i = 0; i < layers_.size(); i++) | |
428 { | |
429 double ax, ay, bx, by; | |
430 | |
431 assert(layers_[i] != NULL); | |
432 if (layers_[i]->GetExtent(ax, ay, bx, by, slice_)) | |
433 { | |
434 if (ax > bx) | |
435 { | |
436 std::swap(ax, bx); | |
437 } | |
438 | |
439 if (ay > by) | |
440 { | |
441 std::swap(ay, by); | |
442 } | |
443 | |
444 if (first) | |
445 { | |
446 x1 = ax; | |
447 y1 = ay; | |
448 x2 = bx; | |
449 y2 = by; | |
450 first = false; | |
451 } | |
452 else | |
453 { | |
454 x1 = std::min(x1, ax); | |
455 y1 = std::min(y1, ay); | |
456 x2 = std::max(x2, bx); | |
457 y2 = std::max(y2, by); | |
458 } | |
459 } | |
460 } | |
461 | |
462 if (first) | |
463 { | |
464 x1 = -1; | |
465 y1 = -1; | |
466 x2 = 1; | |
467 y2 = 1; | |
468 } | |
469 | |
470 // Ensure the extent is non-empty | |
471 if (x1 >= x2) | |
472 { | |
473 double tmp = x1; | |
474 x1 = tmp - 0.5; | |
475 x2 = tmp + 0.5; | |
476 } | |
477 | |
478 if (y1 >= y2) | |
479 { | |
480 double tmp = y1; | |
481 y1 = tmp - 0.5; | |
482 y2 = tmp + 0.5; | |
483 } | |
484 } | |
485 | |
486 | |
487 | |
488 ILayerRendererFactory& LayeredSceneWidget::AddLayer(size_t& layerIndex, | |
489 ILayerRendererFactory* factory) | |
490 { | |
491 if (IsStarted()) | |
492 { | |
493 // Start() has already been invoked | |
494 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
495 } | |
496 | |
497 layerIndex = layers_.size(); | |
498 layers_.push_back(new Layer(factory, *pendingLayers_, layers_.size())); | |
499 | |
500 return *factory; | |
501 } | |
502 | |
503 | |
504 void LayeredSceneWidget::AddLayer(ILayerRendererFactory* factory) | |
505 { | |
506 size_t layerIndex; // Ignored | |
507 AddLayer(layerIndex, factory); | |
508 } | |
509 | |
510 | |
511 RenderStyle LayeredSceneWidget::GetLayerStyle(size_t layer) | |
512 { | |
513 if (layer >= layers_.size()) | |
514 { | |
515 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
516 } | |
517 | |
518 return layers_[layer]->GetStyle(); | |
519 } | |
520 | |
521 | |
522 void LayeredSceneWidget::SetLayerStyle(size_t layer, | |
523 const RenderStyle& style) | |
524 { | |
525 if (layer >= layers_.size()) | |
526 { | |
527 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
528 } | |
529 | |
530 layers_[layer]->SetStyle(style); | |
531 | |
532 if (renderers_.get() != NULL) | |
533 { | |
534 renderers_->SetLayerStyle(layer, style); | |
535 } | |
536 | |
537 InvalidateLayer(layer); | |
538 } | |
539 | |
540 | |
541 | |
542 struct LayeredSceneWidget::SliceChangeFunctor | |
543 { | |
544 const SliceGeometry& slice_; | |
545 | |
546 SliceChangeFunctor(const SliceGeometry& slice) : | |
547 slice_(slice) | |
548 { | |
549 } | |
550 | |
551 void operator() (ISliceObserver& observer, | |
552 const LayeredSceneWidget& source) | |
553 { | |
554 observer.NotifySliceChange(source, slice_); | |
555 } | |
556 }; | |
557 | |
558 | |
559 void LayeredSceneWidget::SetSlice(const SliceGeometry& slice) | |
560 { | |
561 { | |
562 boost::mutex::scoped_lock lock(sliceMutex_); | |
563 slice_ = slice; | |
564 } | |
565 | |
566 InvalidateAllLayers(); | |
567 | |
568 SliceChangeFunctor functor(slice); | |
569 observers_.Notify(this, functor); | |
570 } | |
571 | |
572 | |
573 void LayeredSceneWidget::InvalidateLayer(unsigned int layer) | |
574 { | |
575 pendingLayers_->InvalidateLayer(layer); | |
576 //NotifyChange(); // TODO Understand why this makes the SDL engine not update the display subsequently | |
577 } | |
578 | |
579 | |
580 void LayeredSceneWidget::InvalidateAllLayers() | |
581 { | |
582 pendingLayers_->InvalidateAllLayers(); | |
583 //NotifyChange(); // TODO Understand why this makes the SDL engine not update the display subsequently | |
584 } | |
585 | |
586 | |
587 void LayeredSceneWidget::Start() | |
588 { | |
589 if (IsStarted()) | |
590 { | |
591 // Start() has already been invoked | |
592 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
593 } | |
594 | |
595 for (size_t i = 0; i < layers_.size(); i++) | |
596 { | |
597 layers_[i]->Start(); | |
598 } | |
599 | |
600 renderers_.reset(new Renderers(layers_.size())); | |
601 pendingRenderers_.reset(new Renderers(layers_.size())); | |
602 | |
603 pendingLayers_->SetLayerCount(layers_.size()); | |
604 | |
605 WorldSceneWidget::Start(); | |
606 } | |
607 | |
608 | |
609 void LayeredSceneWidget::Stop() | |
610 { | |
611 if (!IsStarted()) | |
612 { | |
613 // Stop() has already been invoked | |
614 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
615 } | |
616 | |
617 pendingLayers_->Stop(); | |
618 WorldSceneWidget::Stop(); | |
619 | |
620 renderers_.reset(NULL); | |
621 pendingRenderers_.reset(NULL); | |
622 | |
623 for (size_t i = 0; i < layers_.size(); i++) | |
624 { | |
625 layers_[i]->Stop(); | |
626 } | |
627 } | |
628 } |