Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayeredSceneWidget.cpp @ 85:bd48431ac285 wasm
fix
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Fri, 26 May 2017 12:20:26 +0200 |
parents | f5f54ed8d307 |
children | 81f73efd81a1 |
rev | line source |
---|---|
0 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
40
7207a407bcd8
shared copyright with osimis
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
16
diff
changeset
|
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 |
53
c2dc924f1a63
removing threading out of the framework
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
48
diff
changeset
|
29 #include <boost/thread/condition_variable.hpp> // TODO Remove |
c2dc924f1a63
removing threading out of the framework
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
48
diff
changeset
|
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, | |
77 | 103 const ViewportGeometry& view, |
104 const SliceGeometry& slice) | |
0 | 105 { |
106 boost::mutex::scoped_lock lock(mutex_); | |
107 | |
108 bool fullQuality = true; | |
109 | |
110 for (size_t i = 0; i < renderers_.size(); i++) | |
111 { | |
112 if (renderers_[i] != NULL && | |
77 | 113 !renderers_[i]->RenderLayer(context, view, slice)) |
0 | 114 { |
115 return false; | |
116 } | |
117 | |
118 if (renderers_[i] != NULL && | |
119 !renderers_[i]->IsFullQuality()) | |
120 { | |
121 fullQuality = false; | |
122 } | |
123 } | |
124 | |
125 if (!fullQuality) | |
126 { | |
127 double x, y; | |
128 view.MapDisplayToScene(x, y, static_cast<double>(view.GetDisplayWidth()) / 2.0, 10); | |
129 | |
130 cairo_t *cr = context.GetObject(); | |
131 cairo_translate(cr, x, y); | |
132 cairo_arc(cr, 0, 0, 5.0 / view.GetZoom(), 0, 2 * M_PI); | |
133 cairo_set_line_width(cr, 2.0 / view.GetZoom()); | |
134 cairo_set_source_rgb(cr, 1, 1, 1); | |
135 cairo_stroke_preserve(cr); | |
136 cairo_set_source_rgb(cr, 1, 0, 0); | |
137 cairo_fill(cr); | |
138 } | |
139 | |
140 return true; | |
141 } | |
142 | |
143 void SetLayerStyle(size_t index, | |
144 const RenderStyle& style) | |
145 { | |
146 boost::mutex::scoped_lock lock(mutex_); | |
147 | |
148 if (renderers_[index] != NULL) | |
149 { | |
150 renderers_[index]->SetLayerStyle(style); | |
151 } | |
152 } | |
153 }; | |
154 | |
155 | |
156 | |
157 class LayeredSceneWidget::PendingLayers : public boost::noncopyable | |
158 { | |
159 private: | |
160 boost::mutex mutex_; | |
161 boost::condition_variable elementAvailable_; | |
162 size_t layerCount_; | |
163 std::list<size_t> queue_; | |
164 std::vector<bool> layersToUpdate_; | |
165 bool continue_; | |
166 | |
167 void TagAllLayers() | |
168 { | |
169 queue_.clear(); | |
170 | |
171 for (unsigned int i = 0; i < layerCount_; i++) | |
172 { | |
173 queue_.push_back(i); | |
174 layersToUpdate_[i] = true; | |
175 } | |
176 | |
177 if (layerCount_ != 0) | |
178 { | |
179 elementAvailable_.notify_one(); | |
180 } | |
181 } | |
182 | |
183 public: | |
184 PendingLayers() : | |
185 layerCount_(0), | |
186 continue_(true) | |
187 { | |
188 } | |
189 | |
190 void Stop() | |
191 { | |
192 continue_ = false; | |
193 elementAvailable_.notify_one(); | |
194 } | |
195 | |
196 void SetLayerCount(size_t count) | |
197 { | |
198 boost::mutex::scoped_lock lock(mutex_); | |
199 | |
200 layerCount_ = count; | |
201 layersToUpdate_.resize(count); | |
202 | |
203 TagAllLayers(); | |
204 } | |
205 | |
206 void InvalidateAllLayers() | |
207 { | |
208 boost::mutex::scoped_lock lock(mutex_); | |
209 TagAllLayers(); | |
210 } | |
211 | |
212 void InvalidateLayer(size_t layer) | |
213 { | |
214 boost::mutex::scoped_lock lock(mutex_); | |
215 | |
216 if (layer < layerCount_) | |
217 { | |
218 if (layersToUpdate_[layer]) | |
219 { | |
220 // The layer is already scheduled for update, ignore this | |
221 // invalidation | |
222 } | |
223 else | |
224 { | |
225 queue_.push_back(layer); | |
226 layersToUpdate_[layer] = true; | |
227 elementAvailable_.notify_one(); | |
228 } | |
229 } | |
230 } | |
231 | |
232 bool Dequeue(size_t& layer, | |
233 bool& isLast) | |
234 { | |
235 boost::mutex::scoped_lock lock(mutex_); | |
236 | |
237 // WARNING: Do NOT use "timed_wait" on condition variables, as | |
238 // sleeping is not properly supported by Boost for Google NaCl | |
239 while (queue_.empty() && | |
240 continue_) | |
241 { | |
242 elementAvailable_.wait(lock); | |
243 } | |
244 | |
245 if (!continue_) | |
246 { | |
247 return false; | |
248 } | |
249 | |
250 layer = queue_.front(); | |
251 layersToUpdate_[layer] = false; | |
252 queue_.pop_front(); | |
253 | |
254 isLast = queue_.empty(); | |
255 | |
256 return true; | |
257 } | |
258 }; | |
259 | |
260 | |
261 class LayeredSceneWidget::Layer : public ISliceableVolume::IChangeObserver | |
262 { | |
263 private: | |
264 boost::mutex mutex_; | |
265 std::auto_ptr<ILayerRendererFactory> factory_; | |
266 PendingLayers& layers_; | |
267 size_t index_; | |
268 std::auto_ptr<RenderStyle> style_; | |
269 | |
270 public: | |
271 Layer(ILayerRendererFactory* factory, | |
272 PendingLayers& layers, | |
273 size_t index) : | |
274 factory_(factory), | |
275 layers_(layers), | |
276 index_(index) | |
277 { | |
278 if (factory == NULL) | |
279 { | |
280 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
281 } | |
282 } | |
283 | |
284 virtual void NotifyChange(const OrthancStone::ISliceableVolume&) | |
285 { | |
286 layers_.InvalidateLayer(index_); | |
287 } | |
288 | |
289 void Start() | |
290 { | |
291 if (factory_->HasSourceVolume()) | |
292 { | |
293 factory_->GetSourceVolume().Register(*this); | |
294 } | |
295 } | |
296 | |
297 void Stop() | |
298 { | |
299 if (factory_->HasSourceVolume()) | |
300 { | |
301 factory_->GetSourceVolume().Unregister(*this); | |
302 } | |
303 } | |
304 | |
305 bool GetExtent(double& x1, | |
306 double& y1, | |
307 double& x2, | |
308 double& y2, | |
309 const SliceGeometry& displaySlice) | |
310 { | |
311 boost::mutex::scoped_lock lock(mutex_); | |
312 assert(factory_.get() != NULL); | |
313 return factory_->GetExtent(x1, y1, x2, y2, displaySlice); | |
314 } | |
315 | |
316 RenderStyle GetStyle() | |
317 { | |
318 boost::mutex::scoped_lock lock(mutex_); | |
319 | |
320 if (style_.get() == NULL) | |
321 { | |
322 return RenderStyle(); | |
323 } | |
324 else | |
325 { | |
326 return *style_; | |
327 } | |
328 } | |
329 | |
330 void SetStyle(const RenderStyle& style) | |
331 { | |
332 boost::mutex::scoped_lock lock(mutex_); | |
333 style_.reset(new RenderStyle(style)); | |
334 } | |
335 | |
336 | |
337 ILayerRenderer* CreateRenderer(const SliceGeometry& displaySlice) | |
338 { | |
339 boost::mutex::scoped_lock lock(mutex_); | |
340 assert(factory_.get() != NULL); | |
341 | |
342 std::auto_ptr<ILayerRenderer> renderer(factory_->CreateLayerRenderer(displaySlice)); | |
343 | |
344 if (renderer.get() != NULL && | |
345 style_.get() != NULL) | |
346 { | |
347 renderer->SetLayerStyle(*style_); | |
348 } | |
349 | |
350 return renderer.release(); | |
351 } | |
352 }; | |
353 | |
354 | |
355 | |
356 SliceGeometry LayeredSceneWidget::GetSlice() | |
357 { | |
358 boost::mutex::scoped_lock lock(sliceMutex_); | |
359 return slice_; | |
360 } | |
361 | |
362 | |
46
766d31dc5716
removing threads for wasm
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
44
diff
changeset
|
363 void LayeredSceneWidget::UpdateContent() |
0 | 364 { |
365 size_t layer = 0; | |
366 bool isLast = true; | |
367 if (!pendingLayers_->Dequeue(layer, isLast)) | |
368 { | |
369 return; | |
370 } | |
371 | |
372 SliceGeometry slice = GetSlice(); | |
373 | |
374 std::auto_ptr<ILayerRenderer> renderer; | |
375 renderer.reset(layers_[layer]->CreateRenderer(slice)); | |
376 | |
377 if (renderer.get() != NULL) | |
378 { | |
379 pendingRenderers_->SetRenderer(layer, renderer.release()); | |
380 } | |
381 else | |
382 { | |
383 pendingRenderers_->SetRenderer(layer, NULL); | |
384 } | |
385 | |
386 if (isLast) | |
387 { | |
388 Renderers::Merge(*renderers_, *pendingRenderers_); | |
389 NotifyChange(); | |
390 } | |
44 | 391 |
392 // TODO Add sleep at this point | |
0 | 393 } |
394 | |
395 | |
396 bool LayeredSceneWidget::RenderScene(CairoContext& context, | |
397 const ViewportGeometry& view) | |
398 { | |
77 | 399 return renderers_->RenderScene(context, view, slice_); |
0 | 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 layerIndex = layers_.size(); | |
494 layers_.push_back(new Layer(factory, *pendingLayers_, layers_.size())); | |
495 | |
496 return *factory; | |
497 } | |
498 | |
499 | |
500 void LayeredSceneWidget::AddLayer(ILayerRendererFactory* factory) | |
501 { | |
502 size_t layerIndex; // Ignored | |
503 AddLayer(layerIndex, factory); | |
504 } | |
505 | |
506 | |
507 RenderStyle LayeredSceneWidget::GetLayerStyle(size_t layer) | |
508 { | |
509 if (layer >= layers_.size()) | |
510 { | |
511 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
512 } | |
513 | |
514 return layers_[layer]->GetStyle(); | |
515 } | |
516 | |
517 | |
518 void LayeredSceneWidget::SetLayerStyle(size_t layer, | |
519 const RenderStyle& style) | |
520 { | |
521 if (layer >= layers_.size()) | |
522 { | |
523 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
524 } | |
525 | |
526 layers_[layer]->SetStyle(style); | |
527 | |
528 if (renderers_.get() != NULL) | |
529 { | |
530 renderers_->SetLayerStyle(layer, style); | |
531 } | |
532 | |
533 InvalidateLayer(layer); | |
534 } | |
535 | |
536 | |
537 | |
538 struct LayeredSceneWidget::SliceChangeFunctor | |
539 { | |
540 const SliceGeometry& slice_; | |
541 | |
542 SliceChangeFunctor(const SliceGeometry& slice) : | |
543 slice_(slice) | |
544 { | |
545 } | |
546 | |
547 void operator() (ISliceObserver& observer, | |
548 const LayeredSceneWidget& source) | |
549 { | |
550 observer.NotifySliceChange(source, slice_); | |
551 } | |
552 }; | |
553 | |
554 | |
555 void LayeredSceneWidget::SetSlice(const SliceGeometry& slice) | |
556 { | |
557 { | |
558 boost::mutex::scoped_lock lock(sliceMutex_); | |
559 slice_ = slice; | |
560 } | |
561 | |
562 InvalidateAllLayers(); | |
563 | |
564 SliceChangeFunctor functor(slice); | |
565 observers_.Notify(this, functor); | |
566 } | |
567 | |
568 | |
569 void LayeredSceneWidget::InvalidateLayer(unsigned int layer) | |
570 { | |
571 pendingLayers_->InvalidateLayer(layer); | |
572 //NotifyChange(); // TODO Understand why this makes the SDL engine not update the display subsequently | |
573 } | |
574 | |
575 | |
576 void LayeredSceneWidget::InvalidateAllLayers() | |
577 { | |
578 pendingLayers_->InvalidateAllLayers(); | |
579 //NotifyChange(); // TODO Understand why this makes the SDL engine not update the display subsequently | |
580 } | |
581 | |
582 | |
61
ca644004d2ee
MAJOR - removal of Start/Stop and observers in IWidget
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
53
diff
changeset
|
583 #if 0 |
0 | 584 void LayeredSceneWidget::Start() |
585 { | |
586 for (size_t i = 0; i < layers_.size(); i++) | |
587 { | |
588 layers_[i]->Start(); | |
589 } | |
590 | |
591 renderers_.reset(new Renderers(layers_.size())); | |
592 pendingRenderers_.reset(new Renderers(layers_.size())); | |
593 | |
594 pendingLayers_->SetLayerCount(layers_.size()); | |
595 | |
596 WorldSceneWidget::Start(); | |
597 } | |
598 | |
599 | |
600 void LayeredSceneWidget::Stop() | |
601 { | |
602 pendingLayers_->Stop(); | |
603 | |
604 renderers_.reset(NULL); | |
605 pendingRenderers_.reset(NULL); | |
606 | |
607 for (size_t i = 0; i < layers_.size(); i++) | |
608 { | |
609 layers_[i]->Stop(); | |
610 } | |
611 } | |
61
ca644004d2ee
MAJOR - removal of Start/Stop and observers in IWidget
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
53
diff
changeset
|
612 #endif |
0 | 613 } |