Mercurial > hg > orthanc-stone
annotate Framework/Widgets/LayeredSceneWidget.cpp @ 47:28956ed68280
agpl license
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 27 Apr 2017 11:00:15 +0200 |
| parents | 027418bd1517 |
| children | 25befef48c35 4cff7b1ed31d |
| 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 |
| 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 } |