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LevelSetTracker.h
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1 //
3 // Copyright (c) 2012-2015 DreamWorks Animation LLC
4 //
5 // All rights reserved. This software is distributed under the
6 // Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
7 //
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9 // and license notice and the following restrictions and disclaimer.
10 //
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13 // from this software without specific prior written permission.
14 //
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28 //
30 //
38
39 #ifndef OPENVDB_TOOLS_LEVEL_SET_TRACKER_HAS_BEEN_INCLUDED
40 #define OPENVDB_TOOLS_LEVEL_SET_TRACKER_HAS_BEEN_INCLUDED
41
42 #include <tbb/parallel_for.h>
43 #include <boost/bind.hpp>
44 #include <boost/function.hpp>
45 #include <boost/type_traits/is_floating_point.hpp>
46 #include <openvdb/Types.h>
47 #include <openvdb/math/Math.h>
48 #include <openvdb/math/FiniteDifference.h>
49 #include <openvdb/math/Operators.h>
50 #include <openvdb/math/Stencils.h>
51 #include <openvdb/math/Transform.h>
52 #include <openvdb/Grid.h>
53 #include <openvdb/util/NullInterrupter.h>
54 #include <openvdb/tree/ValueAccessor.h>
55 #include <openvdb/tree/LeafManager.h>
56 #include "ChangeBackground.h"// for changeLevelSetBackground
57 #include "Morphology.h"//for dilateVoxels
58 #include "Prune.h"// for pruneLevelSet
59
60 namespace openvdb {
61 OPENVDB_USE_VERSION_NAMESPACE
62 namespace OPENVDB_VERSION_NAME {
63 namespace tools {
64
66 template<typename GridT, typename InterruptT = util::NullInterrupter>
67 class LevelSetTracker
68 {
69 public:
70 typedef GridT GridType;
71 typedef typename GridT::TreeType TreeType;
72 typedef typename TreeType::LeafNodeType LeafType;
73 typedef typename TreeType::ValueType ValueType;
74 typedef typename tree::LeafManager<TreeType> LeafManagerType; // leafs + buffers
75 typedef typename LeafManagerType::LeafRange LeafRange;
76 typedef typename LeafManagerType::BufferType BufferType;
77 typedef typename TreeType::template ValueConverter<bool>::Type BoolMaskType;
78 BOOST_STATIC_ASSERT(boost::is_floating_point<ValueType>::value);
79
81 struct State {
82 State(math::BiasedGradientScheme s = math::HJWENO5_BIAS,
83 math::TemporalIntegrationScheme t = math::TVD_RK1,
84 int n = static_cast<int>(LEVEL_SET_HALF_WIDTH), int g = 1)
85 : spatialScheme(s), temporalScheme(t), normCount(n), grainSize(g) {}
86 math::BiasedGradientScheme spatialScheme;
87 math::TemporalIntegrationScheme temporalScheme;
88 int normCount;// Number of iterations of normalization
89 int grainSize;
90 };
91
94 LevelSetTracker(GridT& grid, InterruptT* interrupt = NULL);
95
96 virtual ~LevelSetTracker() { delete mLeafs; }
97
100 template <typename MaskType>
101 void normalize(const MaskType* mask);
102
104 void normalize() { this->normalize<BoolMaskType>(NULL); }
105
108 void track();
109
111 void prune();
112
128 void dilate(int iterations = 1);
129
132 void erode(int iterations = 1);
133
136 bool resize(Index halfWidth = static_cast<Index>(LEVEL_SET_HALF_WIDTH));
137
139 ValueType getHalfWidth() const { return mGrid->background()/mDx; }
140
142 State getState() const { return mState; }
143
145 void setState(const State& s) { mState =s; }
146
148 math::BiasedGradientScheme getSpatialScheme() const { return mState.spatialScheme; }
149
151 void setSpatialScheme(math::BiasedGradientScheme scheme) { mState.spatialScheme = scheme; }
152
154 math::TemporalIntegrationScheme getTemporalScheme() const { return mState.temporalScheme; }
155
157 void setTemporalScheme(math::TemporalIntegrationScheme scheme) { mState.temporalScheme = scheme;}
158
161 int getNormCount() const { return mState.normCount; }
162
165 void setNormCount(int n) { mState.normCount = n; }
166
168 int getGrainSize() const { return mState.grainSize; }
169
172 void setGrainSize(int grainsize) { mState.grainSize = grainsize; }
173
174 ValueType voxelSize() const { return mDx; }
175
176 void startInterrupter(const char* msg);
177
178 void endInterrupter();
179
181 bool checkInterrupter();
182
183 const GridType& grid() const { return *mGrid; }
184
185 LeafManagerType& leafs() { return *mLeafs; }
186
187 const LeafManagerType& leafs() const { return *mLeafs; }
188
189 private:
190
191 // disallow copy construction and copy by assignment!
192 LevelSetTracker(const LevelSetTracker&);// not implemented
193 LevelSetTracker& operator=(const LevelSetTracker&);// not implemented
194
195 // Private class to perform multi-threaded trimming of
196 // voxels that are too far away from the zero-crossing.
197 struct Trim
198 {
199 Trim(LevelSetTracker& tracker) : mTracker(tracker) {}
200 void trim();
201 void operator()(const LeafRange& r) const;
202 LevelSetTracker& mTracker;
203 };// Trim
204
205 // Private struct to perform multi-threaded normalization
206 template<math::BiasedGradientScheme SpatialScheme,
207 math::TemporalIntegrationScheme TemporalScheme,
208 typename MaskT>
209 struct Normalizer
210 {
211 typedef math::BIAS_SCHEME<SpatialScheme> SchemeT;
212 typedef typename SchemeT::template ISStencil<GridType>::StencilType StencilT;
213 typedef typename MaskT::LeafNodeType MaskLeafT;
214 typedef typename MaskLeafT::ValueOnCIter MaskIterT;
215 typedef typename LeafType::ValueOnCIter VoxelIterT;
216 Normalizer(LevelSetTracker& tracker, const MaskT* mask);
217 void normalize();
218 void operator()(const LeafRange& r) const {mTask(const_cast<Normalizer*>(this), r);}
219 void cook(int swapBuffer=0);
220 template <int Nominator, int Denominator>
221 void euler(const LeafRange& range, Index phiBuffer, Index resultBuffer);
222 inline void euler01(const LeafRange& r) {this->euler<0,1>(r, 0, 1);}
223 inline void euler12(const LeafRange& r) {this->euler<1,2>(r, 1, 1);}
224 inline void euler34(const LeafRange& r) {this->euler<3,4>(r, 1, 2);}
225 inline void euler13(const LeafRange& r) {this->euler<1,3>(r, 1, 2);}
226 template <int Nominator, int Denominator>
227 void eval(StencilT& stencil, const ValueType* phi, ValueType* result, Index n) const;
228 LevelSetTracker& mTracker;
229 const MaskT* mMask;
230 const ValueType mDt, mInvDx;
231 typename boost::function<void (Normalizer*, const LeafRange&)> mTask;
232 }; // Normalizer struct
233
234 template<math::BiasedGradientScheme SpatialScheme, typename MaskT>
235 void normalize1(const MaskT* mask);
236
237 template<math::BiasedGradientScheme SpatialScheme,
238 math::TemporalIntegrationScheme TemporalScheme, typename MaskT>
239 void normalize2(const MaskT* mask);
240
241 // Throughout the methods below mLeafs is always assumed to contain
242 // a list of the current LeafNodes! The auxiliary buffers on the
243 // other hand always have to be allocated locally, since some
244 // methods need them and others don't!
245 GridType* mGrid;
246 LeafManagerType* mLeafs;
247 InterruptT* mInterrupter;
248 const ValueType mDx;
249 State mState;
250 }; // end of LevelSetTracker class
251
252 template<typename GridT, typename InterruptT>
253 LevelSetTracker<GridT, InterruptT>::
254 LevelSetTracker(GridT& grid, InterruptT* interrupt):
255 mGrid(&grid),
256 mLeafs(new LeafManagerType(grid.tree())),
257 mInterrupter(interrupt),
258 mDx(static_cast<ValueType>(grid.voxelSize()[0])),
259 mState()
260 {
261 if ( !grid.hasUniformVoxels() ) {
262 OPENVDB_THROW(RuntimeError,
263 "The transform must have uniform scale for the LevelSetTracker to function");
264 }
265 if ( grid.getGridClass() != GRID_LEVEL_SET) {
266 OPENVDB_THROW(RuntimeError,
267 "LevelSetTracker expected a level set, got a grid of class \""
268 + grid.gridClassToString(grid.getGridClass())
269 + "\" [hint: Grid::setGridClass(openvdb::GRID_LEVEL_SET)]");
270 }
271 }
272
273 template<typename GridT, typename InterruptT>
274 inline void
275 LevelSetTracker<GridT, InterruptT>::
276 prune()
277 {
278 this->startInterrupter("Pruning Level Set");
279
280 // Prune voxels that are too far away from the zero-crossing
281 Trim t(*this);
282 t.trim();
283
284 // Remove inactive nodes from tree
285 tools::pruneLevelSet(mGrid->tree());
286
287 // The tree topology has changes so rebuild the list of leafs
288 mLeafs->rebuildLeafArray();
289 this->endInterrupter();
290 }
291
292 template<typename GridT, typename InterruptT>
293 inline void
294 LevelSetTracker<GridT, InterruptT>::
295 track()
296 {
297 // Dilate narrow-band (this also rebuilds the leaf array!)
298 tools::dilateVoxels(*mLeafs);
299
300 // Compute signed distances in dilated narrow-band
301 this->normalize();
302
303 // Remove voxels that are outside the narrow band
304 this->prune();
305 }
306
307 template<typename GridT, typename InterruptT>
308 inline void
309 LevelSetTracker<GridT, InterruptT>::
310 dilate(int iterations)
311 {
312 if (this->getNormCount() == 0) {
313 for (int i=0; i < iterations; ++i) {
314 tools::dilateVoxels(*mLeafs);
315 mLeafs->rebuildLeafArray();
316 tools::changeLevelSetBackground(this->leafs(), mDx + mGrid->background());
317 }
318 } else {
319 for (int i=0; i < iterations; ++i) {
320 BoolMaskType mask0(mGrid->tree(), false, TopologyCopy());
321 tools::dilateVoxels(*mLeafs);
322 mLeafs->rebuildLeafArray();
323 tools::changeLevelSetBackground(this->leafs(), mDx + mGrid->background());
324 BoolMaskType mask(mGrid->tree(), false, TopologyCopy());
325 mask.topologyDifference(mask0);
326 this->normalize(&mask);
327 }
328 }
329 }
330
331 template<typename GridT, typename InterruptT>
332 inline void
333 LevelSetTracker<GridT, InterruptT>::
334 erode(int iterations)
335 {
336 tools::erodeVoxels(*mLeafs, iterations);
337 mLeafs->rebuildLeafArray();
338 const ValueType background = mGrid->background() - iterations*mDx;
339 tools::changeLevelSetBackground(this->leafs(), background);
340 }
341
342 template<typename GridT, typename InterruptT>
343 inline bool
344 LevelSetTracker<GridT, InterruptT>::
345 resize(Index halfWidth)
346 {
347 const int wOld = static_cast<int>(math::RoundDown(this->getHalfWidth()));
348 const int wNew = static_cast<int>(halfWidth);
349 if (wOld < wNew) {
350 this->dilate(wNew - wOld);
351 } else if (wOld > wNew) {
352 this->erode(wOld - wNew);
353 }
354 return wOld != wNew;
355 }
356
357 template<typename GridT, typename InterruptT>
358 inline void
359 LevelSetTracker<GridT, InterruptT>::
360 startInterrupter(const char* msg)
361 {
362 if (mInterrupter) mInterrupter->start(msg);
363 }
364
365 template<typename GridT, typename InterruptT>
366 inline void
367 LevelSetTracker<GridT, InterruptT>::
368 endInterrupter()
369 {
370 if (mInterrupter) mInterrupter->end();
371 }
372
373 template<typename GridT, typename InterruptT>
374 inline bool
375 LevelSetTracker<GridT, InterruptT>::
376 checkInterrupter()
377 {
378 if (util::wasInterrupted(mInterrupter)) {
379 tbb::task::self().cancel_group_execution();
380 return false;
381 }
382 return true;
383 }
384
385 template<typename GridT, typename InterruptT>
386 template<typename MaskT>
387 inline void
388 LevelSetTracker<GridT, InterruptT>::
389 normalize(const MaskT* mask)
390 {
391 switch (this->getSpatialScheme()) {
392 case math::FIRST_BIAS:
393 this->normalize1<math::FIRST_BIAS , MaskT>(mask); break;
394 case math::SECOND_BIAS:
395 this->normalize1<math::SECOND_BIAS, MaskT>(mask); break;
396 case math::THIRD_BIAS:
397 this->normalize1<math::THIRD_BIAS, MaskT>(mask); break;
398 case math::WENO5_BIAS:
399 this->normalize1<math::WENO5_BIAS, MaskT>(mask); break;
400 case math::HJWENO5_BIAS:
401 this->normalize1<math::HJWENO5_BIAS, MaskT>(mask); break;
402 default:
403 OPENVDB_THROW(ValueError, "Spatial difference scheme not supported!");
404 }
405 }
406
407 template<typename GridT, typename InterruptT>
408 template<math::BiasedGradientScheme SpatialScheme, typename MaskT>
409 inline void
410 LevelSetTracker<GridT, InterruptT>::
411 normalize1(const MaskT* mask)
412 {
413 switch (this->getTemporalScheme()) {
414 case math::TVD_RK1:
415 this->normalize2<SpatialScheme, math::TVD_RK1, MaskT>(mask); break;
416 case math::TVD_RK2:
417 this->normalize2<SpatialScheme, math::TVD_RK2, MaskT>(mask); break;
418 case math::TVD_RK3:
419 this->normalize2<SpatialScheme, math::TVD_RK3, MaskT>(mask); break;
420 default:
421 OPENVDB_THROW(ValueError, "Temporal integration scheme not supported!");
422 }
423 }
424
425 template<typename GridT, typename InterruptT>
426 template<math::BiasedGradientScheme SpatialScheme,
427 math::TemporalIntegrationScheme TemporalScheme,
428 typename MaskT>
429 inline void
430 LevelSetTracker<GridT, InterruptT>::
431 normalize2(const MaskT* mask)
432 {
433 Normalizer<SpatialScheme, TemporalScheme, MaskT> tmp(*this, mask);
434 tmp.normalize();
435 }
436
438
439 template<typename GridT, typename InterruptT>
440 inline void
441 LevelSetTracker<GridT, InterruptT>::
442 Trim::trim()
443 {
444 const int grainSize = mTracker.getGrainSize();
445 const LeafRange range = mTracker.leafs().leafRange(grainSize);
446
447 if (grainSize>0) {
448 tbb::parallel_for(range, *this);
449 } else {
450 (*this)(range);
451 }
452 }
453
455 template<typename GridT, typename InterruptT>
456 inline void
457 LevelSetTracker<GridT, InterruptT>::
458 Trim::operator()(const LeafRange& range) const
459 {
460 typedef typename LeafType::ValueOnIter VoxelIterT;
461 mTracker.checkInterrupter();
462 const ValueType gamma = mTracker.mGrid->background();
463
464 for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) {
465 LeafType &leaf = *leafIter;
466 for (VoxelIterT iter = leaf.beginValueOn(); iter; ++iter) {
467 const ValueType val = *iter;
468 if (val <= -gamma)
469 leaf.setValueOff(iter.pos(), -gamma);
470 else if (val >= gamma)
471 leaf.setValueOff(iter.pos(), gamma);
472 }
473 }
474 }
475
477
478 template<typename GridT, typename InterruptT>
479 template<math::BiasedGradientScheme SpatialScheme,
480 math::TemporalIntegrationScheme TemporalScheme,
481 typename MaskT>
482 inline
483 LevelSetTracker<GridT, InterruptT>::
484 Normalizer<SpatialScheme, TemporalScheme, MaskT>::
485 Normalizer(LevelSetTracker& tracker, const MaskT* mask)
486 : mTracker(tracker)
487 , mMask(mask)
488 , mDt(tracker.voxelSize()*(TemporalScheme == math::TVD_RK1 ? 0.3f :
489 TemporalScheme == math::TVD_RK2 ? 0.9f : 1.0f))
490 , mInvDx(1.0f/tracker.voxelSize())
491 , mTask(0)
492 {
493 }
494
495 template<typename GridT, typename InterruptT>
496 template<math::BiasedGradientScheme SpatialScheme,
497 math::TemporalIntegrationScheme TemporalScheme,
498 typename MaskT>
499 inline void
500 LevelSetTracker<GridT, InterruptT>::
501 Normalizer<SpatialScheme, TemporalScheme, MaskT>::
502 normalize()
503 {
505 mTracker.mLeafs->rebuildAuxBuffers(TemporalScheme == math::TVD_RK3 ? 2 : 1);
506
507 for (int n=0, e=mTracker.getNormCount(); n < e; ++n) {
508
509 OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN
510 switch(TemporalScheme) {//switch is resolved at compile-time
511 case math::TVD_RK1:
512 // Perform one explicit Euler step: t1 = t0 + dt
513 // Phi_t1(0) = Phi_t0(0) - dt * VdotG_t0(1)
514 mTask = boost::bind(&Normalizer::euler01, _1, _2);
515
516 // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1)
517 this->cook(1);
518 break;
519 case math::TVD_RK2:
520 // Perform one explicit Euler step: t1 = t0 + dt
521 // Phi_t1(1) = Phi_t0(0) - dt * VdotG_t0(1)
522 mTask = boost::bind(&Normalizer::euler01, _1, _2);
523
524 // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1)
525 this->cook(1);
526
527 // Convex combine explicit Euler step: t2 = t0 + dt
528 // Phi_t2(1) = 1/2 * Phi_t0(1) + 1/2 * (Phi_t1(0) - dt * V.Grad_t1(0))
529 mTask = boost::bind(&Normalizer::euler12, _1, _2);
530
531 // Cook and swap buffer 0 and 1 such that Phi_t2(0) and Phi_t1(1)
532 this->cook(1);
533 break;
534 case math::TVD_RK3:
535 // Perform one explicit Euler step: t1 = t0 + dt
536 // Phi_t1(1) = Phi_t0(0) - dt * VdotG_t0(1)
537 mTask = boost::bind(&Normalizer::euler01, _1, _2);
538
539 // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1)
540 this->cook(1);
541
542 // Convex combine explicit Euler step: t2 = t0 + dt/2
543 // Phi_t2(2) = 3/4 * Phi_t0(1) + 1/4 * (Phi_t1(0) - dt * V.Grad_t1(0))
544 mTask = boost::bind(&Normalizer::euler34, _1, _2);
545
546 // Cook and swap buffer 0 and 2 such that Phi_t2(0) and Phi_t1(2)
547 this->cook(2);
548
549 // Convex combine explicit Euler step: t3 = t0 + dt
550 // Phi_t3(2) = 1/3 * Phi_t0(1) + 2/3 * (Phi_t2(0) - dt * V.Grad_t2(0)
551 mTask = boost::bind(&Normalizer::euler13, _1, _2);
552
553 // Cook and swap buffer 0 and 2 such that Phi_t3(0) and Phi_t2(2)
554 this->cook(2);
555 break;
556 default:
557 OPENVDB_THROW(ValueError, "Temporal integration scheme not supported!");
558 }
559 OPENVDB_NO_UNREACHABLE_CODE_WARNING_END
560 }
561 mTracker.mLeafs->removeAuxBuffers();
562 }
563
566 template<typename GridT, typename InterruptT>
567 template<math::BiasedGradientScheme SpatialScheme,
568 math::TemporalIntegrationScheme TemporalScheme,
569 typename MaskT>
570 inline void
571 LevelSetTracker<GridT, InterruptT>::
572 Normalizer<SpatialScheme, TemporalScheme, MaskT>::
573 cook(int swapBuffer)
574 {
575 mTracker.startInterrupter("Normalizing Level Set");
576
577 const int grainSize = mTracker.getGrainSize();
578 const LeafRange range = mTracker.leafs().leafRange(grainSize);
579
580 if (grainSize>0) {
581 tbb::parallel_for(range, *this);
582 } else {
583 (*this)(range);
584 }
585
586 mTracker.leafs().swapLeafBuffer(swapBuffer, grainSize==0);
587
588 mTracker.endInterrupter();
589 }
590
591 template<typename GridT, typename InterruptT>
592 template<math::BiasedGradientScheme SpatialScheme,
593 math::TemporalIntegrationScheme TemporalScheme,
594 typename MaskT>
595 template <int Nominator, int Denominator>
596 inline void
597 LevelSetTracker<GridT, InterruptT>::
598 Normalizer<SpatialScheme, TemporalScheme, MaskT>::
599 eval(StencilT& stencil, const ValueType* phi, ValueType* result, Index n) const
600 {
601 typedef typename math::ISGradientNormSqrd<SpatialScheme> GradientT;
602 static const ValueType alpha = ValueType(Nominator)/ValueType(Denominator);
603 static const ValueType beta = ValueType(1) - alpha;
604
605 const ValueType normSqGradPhi = GradientT::result(stencil);
606 const ValueType phi0 = stencil.getValue();
607 ValueType v = phi0 / ( math::Sqrt(math::Pow2(phi0) + normSqGradPhi) +
608 math::Tolerance<ValueType>::value() );
609 v = phi0 - mDt * v * (math::Sqrt(normSqGradPhi) * mInvDx - 1.0f);
610 result[n] = Nominator ? alpha * phi[n] + beta * v : v;
611 }
612
613 template<typename GridT, typename InterruptT>
614 template<math::BiasedGradientScheme SpatialScheme,
615 math::TemporalIntegrationScheme TemporalScheme,
616 typename MaskT>
617 template <int Nominator, int Denominator>
618 inline void
619 LevelSetTracker<GridT,InterruptT>::
620 Normalizer<SpatialScheme, TemporalScheme, MaskT>::
621 euler(const LeafRange& range, Index phiBuffer, Index resultBuffer)
622 {
623 typedef typename LeafType::ValueOnCIter VoxelIterT;
624
625 mTracker.checkInterrupter();
626
627 StencilT stencil(mTracker.grid());
628
629 for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) {
630 const ValueType* phi = leafIter.buffer(phiBuffer).data();
631 ValueType* result = leafIter.buffer(resultBuffer).data();
632 if (mMask == NULL) {
633 for (VoxelIterT iter = leafIter->cbeginValueOn(); iter; ++iter) {
634 stencil.moveTo(iter);
635 this->eval<Nominator, Denominator>(stencil, phi, result, iter.pos());
636 }//loop over active voxels in the leaf of the level set
637 } else if (const MaskLeafT* mask = mMask->probeLeaf(leafIter->origin())) {
638 const ValueType* phi0 = leafIter->buffer().data();
639 for (MaskIterT iter = mask->cbeginValueOn(); iter; ++iter) {
640 const Index i = iter.pos();
641 stencil.moveTo(iter.getCoord(), phi0[i]);
642 this->eval<Nominator, Denominator>(stencil, phi, result, i);
643 }//loop over active voxels in the leaf of the mask
644 }
645 }//loop over leafs of the level set
646 }
647
648 } // namespace tools
649 } // namespace OPENVDB_VERSION_NAME
650 } // namespace openvdb
651
652 #endif // OPENVDB_TOOLS_LEVEL_SET_TRACKER_HAS_BEEN_INCLUDED
653
654 // Copyright (c) 2012-2015 DreamWorks Animation LLC
655 // All rights reserved. This software is distributed under the
656 // Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
FiniteDifference.h
openvdb::v3_1_0::tools::LevelSetTracker::dilate
void dilate(int iterations=1)
Fast but approximate dilation of the narrow band - one layer at a time. Normally we recommend using t...
Definition: LevelSetTracker.h:310
openvdb::v3_1_0::math::Tolerance::value
static T value()
Definition: Math.h:125
openvdb::v3_1_0::tools::LevelSetTracker::resize
bool resize(Index halfWidth=static_cast< Index >(LEVEL_SET_HALF_WIDTH))
Resize the width of the narrow band, i.e. perform dilation and renormalization or erosion as required...
Definition: LevelSetTracker.h:345
openvdb::v3_1_0::Index
Index32 Index
Definition: Types.h:58
openvdb::v3_1_0::util::wasInterrupted
bool wasInterrupted(T *i, int percent=-1)
Definition: NullInterrupter.h:76
openvdb::v3_1_0::math::HJWENO5_BIAS
Definition: FiniteDifference.h:198
Types.h
openvdb::v3_1_0::tools::LevelSetTracker::voxelSize
ValueType voxelSize() const
Definition: LevelSetTracker.h:174
NullInterrupter.h
Math.h
General-purpose arithmetic and comparison routines, most of which accept arbitrary value types (or at...
openvdb::v3_1_0::tools::LevelSetTracker::getTemporalScheme
math::TemporalIntegrationScheme getTemporalScheme() const
Definition: LevelSetTracker.h:154
openvdb::v3_1_0::math::TVD_RK1
Definition: FiniteDifference.h:263
openvdb::v3_1_0::ValueError
Definition: Exceptions.h:88
openvdb::v3_1_0::tools::LevelSetTracker::getNormCount
int getNormCount() const
Definition: LevelSetTracker.h:161
openvdb::v3_1_0::tools::LevelSetTracker::State::State
State(math::BiasedGradientScheme s=math::HJWENO5_BIAS, math::TemporalIntegrationScheme t=math::TVD_RK1, int n=static_cast< int >(LEVEL_SET_HALF_WIDTH), int g=1)
Definition: LevelSetTracker.h:82
openvdb::v3_1_0::tools::LevelSetTracker
Performs multi-threaded interface tracking of narrow band level sets.
Definition: LevelSetTracker.h:67
OPENVDB_THROW
#define OPENVDB_THROW(exception, message)
Definition: Exceptions.h:97
ChangeBackground.h
Efficient multi-threaded replacement of the background values in tree.
openvdb::v3_1_0::tools::LevelSetTracker::endInterrupter
void endInterrupter()
Definition: LevelSetTracker.h:368
openvdb::v3_1_0::math::WENO5_BIAS
Definition: FiniteDifference.h:197
openvdb::v3_1_0::tree::LeafManager::rebuildLeafArray
void rebuildLeafArray()
Remove the auxiliary buffers and rebuild the leaf array.
Definition: LeafManager.h:292
openvdb::v3_1_0::tree::LeafManager
This class manages a linear array of pointers to a given tree&#39;s leaf nodes, as well as optional auxil...
Definition: LeafManager.h:114
openvdb::v3_1_0::tools::LevelSetTracker::State::normCount
int normCount
Definition: LevelSetTracker.h:88
openvdb::v3_1_0::math::BIAS_SCHEME
Definition: Operators.h:152
openvdb::v3_1_0::tools::changeLevelSetBackground
void changeLevelSetBackground(TreeOrLeafManagerT &tree, const typename TreeOrLeafManagerT::ValueType &halfWidth, bool threaded=true, size_t grainSize=32)
Replace the background value in all the nodes of a floating-point tree containing a symmetric narrow-...
Definition: ChangeBackground.h:260
openvdb::v3_1_0::tools::LevelSetTracker::State::grainSize
int grainSize
Definition: LevelSetTracker.h:89
openvdb::v3_1_0::tools::dilateVoxels
OPENVDB_STATIC_SPECIALIZATION void dilateVoxels(TreeType &tree, int iterations=1, NearestNeighbors nn=NN_FACE)
Topologically dilate all leaf-level active voxels in a tree using one of three nearest neighbor conne...
Definition: Morphology.h:778
openvdb::v3_1_0::math::RoundDown
float RoundDown(float x)
Return x rounded down to the nearest integer.
Definition: Math.h:751
Transform.h
openvdb::v3_1_0::tools::LevelSetTracker::TreeType
GridT::TreeType TreeType
Definition: LevelSetTracker.h:71
openvdb::v3_1_0::tools::LevelSetTracker::~LevelSetTracker
virtual ~LevelSetTracker()
Definition: LevelSetTracker.h:96
openvdb::v3_1_0::tools::LevelSetTracker::track
void track()
Track the level set interface, i.e. rebuild and normalize the narrow band of the level set...
Definition: LevelSetTracker.h:295
openvdb::v3_1_0::tools::LevelSetTracker::BufferType
LeafManagerType::BufferType BufferType
Definition: LevelSetTracker.h:76
openvdb::v3_1_0::tools::LevelSetTracker::BoolMaskType
TreeType::template ValueConverter< bool >::Type BoolMaskType
Definition: LevelSetTracker.h:77
openvdb::v3_1_0::tools::erodeVoxels
OPENVDB_STATIC_SPECIALIZATION void erodeVoxels(TreeType &tree, int iterations=1, NearestNeighbors nn=NN_FACE)
Topologically erode all leaf-level active voxels in the given tree.
Definition: Morphology.h:798
openvdb::v3_1_0::math::SECOND_BIAS
Definition: FiniteDifference.h:195
Prune.h
Defined various multi-threaded utility functions for trees.
openvdb::v3_1_0::tree::LeafManager::LeafRange::begin
Iterator begin() const
Definition: LeafManager.h:181
openvdb::v3_1_0::tools::LevelSetTracker::ValueType
TreeType::ValueType ValueType
Definition: LevelSetTracker.h:73
openvdb::v3_1_0::tools::LevelSetTracker::GridType
GridT GridType
Definition: LevelSetTracker.h:70
openvdb::v3_1_0::tools::LevelSetTracker::setTemporalScheme
void setTemporalScheme(math::TemporalIntegrationScheme scheme)
Set the spatial finite difference scheme.
Definition: LevelSetTracker.h:157
openvdb::v3_1_0::tools::LevelSetTracker::leafs
LeafManagerType & leafs()
Definition: LevelSetTracker.h:185
openvdb::v3_1_0::tools::LevelSetTracker::LeafRange
LeafManagerType::LeafRange LeafRange
Definition: LevelSetTracker.h:75
OPENVDB_VERSION_NAME
#define OPENVDB_VERSION_NAME
Definition: version.h:43
openvdb::v3_1_0::tools::LevelSetTracker::getGrainSize
int getGrainSize() const
Definition: LevelSetTracker.h:168
openvdb::v3_1_0::tools::LevelSetTracker::LeafManagerType
tree::LeafManager< TreeType > LeafManagerType
Definition: LevelSetTracker.h:74
openvdb::v3_1_0::tools::LevelSetTracker::setGrainSize
void setGrainSize(int grainsize)
Set the grain-size used for multi-threading.
Definition: LevelSetTracker.h:172
openvdb::v3_1_0::tools::LevelSetTracker::checkInterrupter
bool checkInterrupter()
Definition: LevelSetTracker.h:376
openvdb::v3_1_0::tools::pruneLevelSet
void pruneLevelSet(TreeT &tree, bool threaded=true, size_t grainSize=1)
Reduce the memory footprint of a tree by replacing nodes whose values are all inactive with inactive ...
Definition: Prune.h:402
openvdb::v3_1_0::RuntimeError
Definition: Exceptions.h:86
Morphology.h
Implementation of morphological dilation and erosion.
openvdb::v3_1_0::math::THIRD_BIAS
Definition: FiniteDifference.h:196
openvdb
Definition: Exceptions.h:39
OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN
#define OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN
Definition: Platform.h:129
openvdb::v3_1_0::TopologyCopy
Definition: Types.h:419
openvdb::v3_1_0::tools::prune
void prune(TreeT &tree, typename TreeT::ValueType tolerance=zeroVal< typename TreeT::ValueType >(), bool threaded=true, size_t grainSize=1)
Reduce the memory footprint of a tree by replacing with tiles any nodes whose values are all the same...
Definition: Prune.h:347
openvdb::v3_1_0::tree::LeafManager::BufferType
CopyConstness< TreeType, NonConstBufferType >::Type BufferType
Definition: LeafManager.h:125
openvdb::v3_1_0::tools::LevelSetTracker::setSpatialScheme
void setSpatialScheme(math::BiasedGradientScheme scheme)
Set the spatial finite difference scheme.
Definition: LevelSetTracker.h:151
openvdb::v3_1_0::GRID_LEVEL_SET
Definition: Types.h:206
openvdb::v3_1_0::tools::LevelSetTracker::State
Lightweight struct that stores the state of the LevelSetTracker.
Definition: LevelSetTracker.h:81
openvdb::v3_1_0::tools::LevelSetTracker::setNormCount
void setNormCount(int n)
Set the number of normalizations performed per track or normalize call.
Definition: LevelSetTracker.h:165
openvdb::v3_1_0::math::Pow2
Type Pow2(Type x)
Return .
Definition: Math.h:514
openvdb::v3_1_0::math::FIRST_BIAS
Definition: FiniteDifference.h:194
openvdb::v3_1_0::tools::LevelSetTracker::grid
const GridType & grid() const
Definition: LevelSetTracker.h:183
openvdb::v3_1_0::tools::LevelSetTracker::setState
void setState(const State &s)
Set the state of the tracker (see struct defined above)
Definition: LevelSetTracker.h:145
ValueAccessor.h
OPENVDB_NO_UNREACHABLE_CODE_WARNING_END
#define OPENVDB_NO_UNREACHABLE_CODE_WARNING_END
Definition: Platform.h:130
openvdb::v3_1_0::math::BiasedGradientScheme
BiasedGradientScheme
Biased Gradients are limited to non-centered differences.
Definition: FiniteDifference.h:192
openvdb::v3_1_0::tools::LevelSetTracker::leafs
const LeafManagerType & leafs() const
Definition: LevelSetTracker.h:187
openvdb::v3_1_0::tools::LevelSetTracker::getState
State getState() const
Return the state of the tracker (see struct defined above)
Definition: LevelSetTracker.h:142
openvdb::v3_1_0::tools::normalize
GridType::Ptr normalize(const GridType &grid, bool threaded, InterruptT *interrupt)
Normalize the vectors of the given vector-valued grid.
Definition: GridOperators.h:1067
Grid.h
openvdb::v3_1_0::tools::LevelSetTracker::LeafType
TreeType::LeafNodeType LeafType
Definition: LevelSetTracker.h:72
openvdb::v3_1_0::tools::LevelSetTracker::erode
void erode(int iterations=1)
Erodes the width of the narrow-band and update the background values.
Definition: LevelSetTracker.h:334
openvdb::v3_1_0::math::TVD_RK3
Definition: FiniteDifference.h:265
openvdb::v3_1_0::tree::LeafManager::LeafRange::Iterator
Definition: LeafManager.h:134
openvdb::v3_1_0::tools::LevelSetTracker::getHalfWidth
ValueType getHalfWidth() const
Return the half width of the narrow band in floating-point voxel units.
Definition: LevelSetTracker.h:139
Stencils.h
Defines various finite difference stencils by means of the "curiously recurring template pattern" on ...
openvdb::v3_1_0::tools::LevelSetTracker::prune
void prune()
Remove voxels that are outside the narrow band. (substep of track)
Definition: LevelSetTracker.h:276
openvdb::v3_1_0::math::TVD_RK2
Definition: FiniteDifference.h:264
OPENVDB_USE_VERSION_NAMESPACE
#define OPENVDB_USE_VERSION_NAMESPACE
Definition: version.h:71
openvdb::v3_1_0::math::Sqrt
float Sqrt(float x)
Return the square root of a floating-point value.
Definition: Math.h:709
LeafManager.h
A LeafManager manages a linear array of pointers to a given tree&#39;s leaf nodes, as well as optional au...
openvdb::v3_1_0::tools::LevelSetTracker::startInterrupter
void startInterrupter(const char *msg)
Definition: LevelSetTracker.h:360
openvdb::v3_1_0::math::ISGradientNormSqrd
Definition: Operators.h:253
openvdb::v3_1_0::tools::LevelSetTracker::State::temporalScheme
math::TemporalIntegrationScheme temporalScheme
Definition: LevelSetTracker.h:87
openvdb::v3_1_0::LEVEL_SET_HALF_WIDTH
static const Real LEVEL_SET_HALF_WIDTH
Definition: Types.h:212
openvdb::v3_1_0::tools::LevelSetTracker::normalize
void normalize()
Iterative normalization, i.e. solving the Eikonal equation.
Definition: LevelSetTracker.h:104
openvdb::v3_1_0::math::TemporalIntegrationScheme
TemporalIntegrationScheme
Temporal integration schemes.
Definition: FiniteDifference.h:261
openvdb::v3_1_0::tree::LeafManager::LeafRange
Definition: LeafManager.h:131
Operators.h
openvdb::v3_1_0::tools::LevelSetTracker::State::spatialScheme
math::BiasedGradientScheme spatialScheme
Definition: LevelSetTracker.h:86
openvdb::v3_1_0::tools::LevelSetTracker::getSpatialScheme
math::BiasedGradientScheme getSpatialScheme() const
Definition: LevelSetTracker.h:148