OpenVDB: LevelSetMorph.h Source File

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LevelSetMorph.h
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1 //
3 // Copyright (c) 2012-2015 DreamWorks Animation LLC
4 //
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39
40 #ifndef OPENVDB_TOOLS_LEVEL_SET_MORPH_HAS_BEEN_INCLUDED
41 #define OPENVDB_TOOLS_LEVEL_SET_MORPH_HAS_BEEN_INCLUDED
42
43 #include "LevelSetTracker.h"
44 #include "Interpolation.h" // for BoxSampler, etc.
45 #include <openvdb/math/FiniteDifference.h>
46
47 namespace openvdb {
48 OPENVDB_USE_VERSION_NAMESPACE
49 namespace OPENVDB_VERSION_NAME {
50 namespace tools {
51
52
72 template<typename GridT,
73 typename InterruptT = util::NullInterrupter>
74 class LevelSetMorphing
75 {
76 public:
77 typedef GridT GridType;
78 typedef typename GridT::TreeType TreeType;
79 typedef LevelSetTracker<GridT, InterruptT> TrackerT;
80 typedef typename TrackerT::LeafRange LeafRange;
81 typedef typename TrackerT::LeafType LeafType;
82 typedef typename TrackerT::BufferType BufferType;
83 typedef typename TrackerT::ValueType ValueType;
84
86 LevelSetMorphing(GridT& sourceGrid,
87 const GridT& targetGrid,
88 InterruptT* interrupt = NULL)
89 : mTracker(sourceGrid, interrupt)
90 , mTarget(&targetGrid)
91 , mMask(NULL)
92 , mSpatialScheme(math::HJWENO5_BIAS)
93 , mTemporalScheme(math::TVD_RK2)
94 , mMinMask(0)
95 , mDeltaMask(1)
96 , mInvertMask(false)
97 {
98 }
99
100 virtual ~LevelSetMorphing() {}
101
103 void setTarget(const GridT& targetGrid) { mTarget = &targetGrid; }
104
106 void setAlphaMask(const GridT& maskGrid) { mMask = &maskGrid; }
107
109 math::BiasedGradientScheme getSpatialScheme() const { return mSpatialScheme; }
111 void setSpatialScheme(math::BiasedGradientScheme scheme) { mSpatialScheme = scheme; }
112
114 math::TemporalIntegrationScheme getTemporalScheme() const { return mTemporalScheme; }
116 void setTemporalScheme(math::TemporalIntegrationScheme scheme) { mTemporalScheme = scheme; }
117
119 math::BiasedGradientScheme getTrackerSpatialScheme() const
120 {
121 return mTracker.getSpatialScheme();
122 }
124 void setTrackerSpatialScheme(math::BiasedGradientScheme scheme)
125 {
126 mTracker.setSpatialScheme(scheme);
127 }
129 math::TemporalIntegrationScheme getTrackerTemporalScheme() const
130 {
131 return mTracker.getTemporalScheme();
132 }
134 void setTrackerTemporalScheme(math::TemporalIntegrationScheme scheme)
135 {
136 mTracker.setTemporalScheme(scheme);
137 }
139 int getNormCount() const { return mTracker.getNormCount(); }
141 void setNormCount(int n) { mTracker.setNormCount(n); }
142
144 int getGrainSize() const { return mTracker.getGrainSize(); }
147 void setGrainSize(int grainsize) { mTracker.setGrainSize(grainsize); }
148
151 ValueType minMask() const { return mMinMask; }
152
155 ValueType maxMask() const { return mDeltaMask + mMinMask; }
156
164 void setMaskRange(ValueType min, ValueType max)
165 {
166 if (!(min < max)) OPENVDB_THROW(ValueError, "Invalid mask range (expects min < max)");
167 mMinMask = min;
168 mDeltaMask = max-min;
169 }
170
173 bool isMaskInverted() const { return mInvertMask; }
176 void invertMask(bool invert=true) { mInvertMask = invert; }
177
182 size_t advect(ValueType time0, ValueType time1);
183
184 private:
185
186 // disallow copy construction and copy by assignment!
187 LevelSetMorphing(const LevelSetMorphing&);// not implemented
188 LevelSetMorphing& operator=(const LevelSetMorphing&);// not implemented
189
190 template<math::BiasedGradientScheme SpatialScheme>
191 size_t advect1(ValueType time0, ValueType time1);
192
193 template<math::BiasedGradientScheme SpatialScheme,
194 math::TemporalIntegrationScheme TemporalScheme>
195 size_t advect2(ValueType time0, ValueType time1);
196
197 template<math::BiasedGradientScheme SpatialScheme,
198 math::TemporalIntegrationScheme TemporalScheme,
199 typename MapType>
200 size_t advect3(ValueType time0, ValueType time1);
201
202 TrackerT mTracker;
203 const GridT *mTarget, *mMask;
204 math::BiasedGradientScheme mSpatialScheme;
205 math::TemporalIntegrationScheme mTemporalScheme;
206 ValueType mMinMask, mDeltaMask;
207 bool mInvertMask;
208
209 // This templated private class implements all the level set magic.
210 template<typename MapT, math::BiasedGradientScheme SpatialScheme,
211 math::TemporalIntegrationScheme TemporalScheme>
212 struct Morph
213 {
215 Morph(LevelSetMorphing<GridT, InterruptT>& parent);
217 Morph(const Morph& other);
219 Morph(Morph& other, tbb::split);
221 virtual ~Morph() {}
224 size_t advect(ValueType time0, ValueType time1);
226 void operator()(const LeafRange& r) const
227 {
228 if (mTask) mTask(const_cast<Morph*>(this), r);
229 else OPENVDB_THROW(ValueError, "task is undefined - don\'t call this method directly");
230 }
232 void operator()(const LeafRange& r)
233 {
234 if (mTask) mTask(this, r);
235 else OPENVDB_THROW(ValueError, "task is undefined - don\'t call this method directly");
236 }
238 void join(const Morph& other) { mMaxAbsS = math::Max(mMaxAbsS, other.mMaxAbsS); }
239
241 enum ThreadingMode { PARALLEL_FOR, PARALLEL_REDUCE }; // for internal use
242 // method calling tbb
243 void cook(ThreadingMode mode, size_t swapBuffer = 0);
244
246 typename GridT::ValueType sampleSpeed(ValueType time0, ValueType time1, Index speedBuffer);
247 void sampleXformedSpeed(const LeafRange& r, Index speedBuffer);
248 void sampleAlignedSpeed(const LeafRange& r, Index speedBuffer);
249
250 // Convex combination of Phi and a forward Euler advection steps:
251 // Phi(result) = alpha * Phi(phi) + (1-alpha) * (Phi(0) - dt * Speed(speed)*|Grad[Phi(0)]|);
252 template <int Nominator, int Denominator>
253 void euler(const LeafRange&, ValueType, Index, Index, Index);
254 inline void euler01(const LeafRange& r, ValueType t, Index s) {this->euler<0,1>(r,t,0,1,s);}
255 inline void euler12(const LeafRange& r, ValueType t) {this->euler<1,2>(r, t, 1, 1, 2);}
256 inline void euler34(const LeafRange& r, ValueType t) {this->euler<3,4>(r, t, 1, 2, 3);}
257 inline void euler13(const LeafRange& r, ValueType t) {this->euler<1,3>(r, t, 1, 2, 3);}
258
259 typedef typename boost::function<void (Morph*, const LeafRange&)> FuncType;
260 LevelSetMorphing* mParent;
261 ValueType mMinAbsS, mMaxAbsS;
262 const MapT* mMap;
263 FuncType mTask;
264 }; // end of private Morph struct
265
266 };//end of LevelSetMorphing
267
268 template<typename GridT, typename InterruptT>
269 inline size_t
270 LevelSetMorphing<GridT, InterruptT>::advect(ValueType time0, ValueType time1)
271 {
272 switch (mSpatialScheme) {
273 case math::FIRST_BIAS:
274 return this->advect1<math::FIRST_BIAS >(time0, time1);
275 //case math::SECOND_BIAS:
276 //return this->advect1<math::SECOND_BIAS >(time0, time1);
277 //case math::THIRD_BIAS:
278 //return this->advect1<math::THIRD_BIAS >(time0, time1);
279 //case math::WENO5_BIAS:
280 //return this->advect1<math::WENO5_BIAS >(time0, time1);
281 case math::HJWENO5_BIAS:
282 return this->advect1<math::HJWENO5_BIAS>(time0, time1);
283 default:
284 OPENVDB_THROW(ValueError, "Spatial difference scheme not supported!");
285 }
286 return 0;
287 }
288
289 template<typename GridT, typename InterruptT>
290 template<math::BiasedGradientScheme SpatialScheme>
291 inline size_t
292 LevelSetMorphing<GridT, InterruptT>::advect1(ValueType time0, ValueType time1)
293 {
294 switch (mTemporalScheme) {
295 case math::TVD_RK1:
296 return this->advect2<SpatialScheme, math::TVD_RK1>(time0, time1);
297 case math::TVD_RK2:
298 return this->advect2<SpatialScheme, math::TVD_RK2>(time0, time1);
299 case math::TVD_RK3:
300 return this->advect2<SpatialScheme, math::TVD_RK3>(time0, time1);
301 default:
302 OPENVDB_THROW(ValueError, "Temporal integration scheme not supported!");
303 }
304 return 0;
305 }
306
307 template<typename GridT, typename InterruptT>
308 template<math::BiasedGradientScheme SpatialScheme,
309 math::TemporalIntegrationScheme TemporalScheme>
310 inline size_t
311 LevelSetMorphing<GridT, InterruptT>::advect2(ValueType time0, ValueType time1)
312 {
313 const math::Transform& trans = mTracker.grid().transform();
314 if (trans.mapType() == math::UniformScaleMap::mapType()) {
315 return this->advect3<SpatialScheme, TemporalScheme, math::UniformScaleMap>(time0, time1);
316 } else if (trans.mapType() == math::UniformScaleTranslateMap::mapType()) {
317 return this->advect3<SpatialScheme, TemporalScheme, math::UniformScaleTranslateMap>(
318 time0, time1);
319 } else if (trans.mapType() == math::UnitaryMap::mapType()) {
320 return this->advect3<SpatialScheme, TemporalScheme, math::UnitaryMap >(time0, time1);
321 } else if (trans.mapType() == math::TranslationMap::mapType()) {
322 return this->advect3<SpatialScheme, TemporalScheme, math::TranslationMap>(time0, time1);
323 } else {
324 OPENVDB_THROW(ValueError, "MapType not supported!");
325 }
326 return 0;
327 }
328
329 template<typename GridT, typename InterruptT>
330 template<math::BiasedGradientScheme SpatialScheme,
331 math::TemporalIntegrationScheme TemporalScheme,
332 typename MapT>
333 inline size_t
334 LevelSetMorphing<GridT, InterruptT>::advect3(ValueType time0, ValueType time1)
335 {
336 Morph<MapT, SpatialScheme, TemporalScheme> tmp(*this);
337 return tmp.advect(time0, time1);
338 }
339
340
342
343 template<typename GridT, typename InterruptT>
344 template <typename MapT, math::BiasedGradientScheme SpatialScheme,
345 math::TemporalIntegrationScheme TemporalScheme>
346 inline
347 LevelSetMorphing<GridT, InterruptT>::
348 Morph<MapT, SpatialScheme, TemporalScheme>::
349 Morph(LevelSetMorphing<GridT, InterruptT>& parent)
350 : mParent(&parent)
351 , mMinAbsS(ValueType(1e-6))
352 , mMap(parent.mTracker.grid().transform().template constMap<MapT>().get())
353 , mTask(0)
354 {
355 }
356
357 template<typename GridT, typename InterruptT>
358 template <typename MapT, math::BiasedGradientScheme SpatialScheme,
359 math::TemporalIntegrationScheme TemporalScheme>
360 inline
361 LevelSetMorphing<GridT, InterruptT>::
362 Morph<MapT, SpatialScheme, TemporalScheme>::
363 Morph(const Morph& other)
364 : mParent(other.mParent)
365 , mMinAbsS(other.mMinAbsS)
366 , mMaxAbsS(other.mMaxAbsS)
367 , mMap(other.mMap)
368 , mTask(other.mTask)
369 {
370 }
371
372 template<typename GridT, typename InterruptT>
373 template <typename MapT, math::BiasedGradientScheme SpatialScheme,
374 math::TemporalIntegrationScheme TemporalScheme>
375 inline
376 LevelSetMorphing<GridT, InterruptT>::
377 Morph<MapT, SpatialScheme, TemporalScheme>::
378 Morph(Morph& other, tbb::split)
379 : mParent(other.mParent)
380 , mMinAbsS(other.mMinAbsS)
381 , mMaxAbsS(other.mMaxAbsS)
382 , mMap(other.mMap)
383 , mTask(other.mTask)
384 {
385 }
386
387 template<typename GridT, typename InterruptT>
388 template <typename MapT, math::BiasedGradientScheme SpatialScheme,
389 math::TemporalIntegrationScheme TemporalScheme>
390 inline size_t
391 LevelSetMorphing<GridT, InterruptT>::
392 Morph<MapT, SpatialScheme, TemporalScheme>::
393 advect(ValueType time0, ValueType time1)
394 {
395 // Make sure we have enough temporal auxiliary buffers for the time
396 // integration AS WELL AS an extra buffer with the speed function!
397 static const Index auxBuffers = 1 + (TemporalScheme == math::TVD_RK3 ? 2 : 1);
398 size_t countCFL = 0;
399 while (time0 < time1 && mParent->mTracker.checkInterrupter()) {
400 mParent->mTracker.leafs().rebuildAuxBuffers(auxBuffers);
401
402 const ValueType dt = this->sampleSpeed(time0, time1, auxBuffers);
403 if ( math::isZero(dt) ) break;//V is essentially zero so terminate
404
405 OPENVDB_NO_UNREACHABLE_CODE_WARNING_BEGIN //switch is resolved at compile-time
406 switch(TemporalScheme) {
407 case math::TVD_RK1:
408 // Perform one explicit Euler step: t1 = t0 + dt
409 // Phi_t1(1) = Phi_t0(0) - dt * Speed(2) * |Grad[Phi(0)]|
410 mTask = boost::bind(&Morph::euler01, _1, _2, dt, /*speed*/2);
411
412 // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1)
413 this->cook(PARALLEL_FOR, 1);
414 break;
415 case math::TVD_RK2:
416 // Perform one explicit Euler step: t1 = t0 + dt
417 // Phi_t1(1) = Phi_t0(0) - dt * Speed(2) * |Grad[Phi(0)]|
418 mTask = boost::bind(&Morph::euler01, _1, _2, dt, /*speed*/2);
419
420 // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1)
421 this->cook(PARALLEL_FOR, 1);
422
423 // Convex combine explict Euler step: t2 = t0 + dt
424 // Phi_t2(1) = 1/2 * Phi_t0(1) + 1/2 * (Phi_t1(0) - dt * Speed(2) * |Grad[Phi(0)]|)
425 mTask = boost::bind(&Morph::euler12, _1, _2, dt);
426
427 // Cook and swap buffer 0 and 1 such that Phi_t2(0) and Phi_t1(1)
428 this->cook(PARALLEL_FOR, 1);
429 break;
430 case math::TVD_RK3:
431 // Perform one explicit Euler step: t1 = t0 + dt
432 // Phi_t1(1) = Phi_t0(0) - dt * Speed(3) * |Grad[Phi(0)]|
433 mTask = boost::bind(&Morph::euler01, _1, _2, dt, /*speed*/3);
434
435 // Cook and swap buffer 0 and 1 such that Phi_t1(0) and Phi_t0(1)
436 this->cook(PARALLEL_FOR, 1);
437
438 // Convex combine explict Euler step: t2 = t0 + dt/2
439 // Phi_t2(2) = 3/4 * Phi_t0(1) + 1/4 * (Phi_t1(0) - dt * Speed(3) * |Grad[Phi(0)]|)
440 mTask = boost::bind(&Morph::euler34, _1, _2, dt);
441
442 // Cook and swap buffer 0 and 2 such that Phi_t2(0) and Phi_t1(2)
443 this->cook(PARALLEL_FOR, 2);
444
445 // Convex combine explict Euler step: t3 = t0 + dt
446 // Phi_t3(2) = 1/3 * Phi_t0(1) + 2/3 * (Phi_t2(0) - dt * Speed(3) * |Grad[Phi(0)]|)
447 mTask = boost::bind(&Morph::euler13, _1, _2, dt);
448
449 // Cook and swap buffer 0 and 2 such that Phi_t3(0) and Phi_t2(2)
450 this->cook(PARALLEL_FOR, 2);
451 break;
452 default:
453 OPENVDB_THROW(ValueError, "Temporal integration scheme not supported!");
454 }//end of compile-time resolved switch
455 OPENVDB_NO_UNREACHABLE_CODE_WARNING_END
456
457 time0 += dt;
458 ++countCFL;
459 mParent->mTracker.leafs().removeAuxBuffers();
460
461 // Track the narrow band
462 mParent->mTracker.track();
463 }//end wile-loop over time
464
465 return countCFL;//number of CLF propagation steps
466 }
467
468 template<typename GridT, typename InterruptT>
469 template<typename MapT, math::BiasedGradientScheme SpatialScheme,
470 math::TemporalIntegrationScheme TemporalScheme>
471 inline typename GridT::ValueType
472 LevelSetMorphing<GridT, InterruptT>::
473 Morph<MapT, SpatialScheme, TemporalScheme>::
474 sampleSpeed(ValueType time0, ValueType time1, Index speedBuffer)
475 {
476 mMaxAbsS = mMinAbsS;
477 const size_t leafCount = mParent->mTracker.leafs().leafCount();
478 if (leafCount==0 || time0 >= time1) return ValueType(0);
479
480 const math::Transform& xform = mParent->mTracker.grid().transform();
481 if (mParent->mTarget->transform() == xform &&
482 (mParent->mMask == NULL || mParent->mMask->transform() == xform)) {
483 mTask = boost::bind(&Morph::sampleAlignedSpeed, _1, _2, speedBuffer);
484 } else {
485 mTask = boost::bind(&Morph::sampleXformedSpeed, _1, _2, speedBuffer);
486 }
487 this->cook(PARALLEL_REDUCE);
488 if (math::isApproxEqual(mMinAbsS, mMaxAbsS)) return ValueType(0);//speed is essentially zero
489 static const ValueType CFL = (TemporalScheme == math::TVD_RK1 ? ValueType(0.3) :
490 TemporalScheme == math::TVD_RK2 ? ValueType(0.9) :
491 ValueType(1.0))/math::Sqrt(ValueType(3.0));
492 const ValueType dt = math::Abs(time1 - time0), dx = mParent->mTracker.voxelSize();
493 return math::Min(dt, ValueType(CFL*dx/mMaxAbsS));
494 }
495
496 template<typename GridT, typename InterruptT>
497 template <typename MapT, math::BiasedGradientScheme SpatialScheme,
498 math::TemporalIntegrationScheme TemporalScheme>
499 inline void
500 LevelSetMorphing<GridT, InterruptT>::
501 Morph<MapT, SpatialScheme, TemporalScheme>::
502 sampleXformedSpeed(const LeafRange& range, Index speedBuffer)
503 {
504 typedef typename LeafType::ValueOnCIter VoxelIterT;
505 typedef tools::GridSampler<typename GridT::ConstAccessor, tools::BoxSampler> SamplerT;
506 const MapT& map = *mMap;
507 mParent->mTracker.checkInterrupter();
508
509 typename GridT::ConstAccessor targetAcc = mParent->mTarget->getAccessor();
510 SamplerT target(targetAcc, mParent->mTarget->transform());
511 if (mParent->mMask == NULL) {
512 for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) {
513 ValueType* speed = leafIter.buffer(speedBuffer).data();
514 bool isZero = true;
515 for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) {
516 ValueType& s = speed[voxelIter.pos()];
517 s -= target.wsSample(map.applyMap(voxelIter.getCoord().asVec3d()));
518 if (!math::isApproxZero(s)) isZero = false;
519 mMaxAbsS = math::Max(mMaxAbsS, math::Abs(s));
520 }
521 if (isZero) speed[0] = std::numeric_limits<ValueType>::max();//tag first voxel
522 }
523 } else {
524 const ValueType min = mParent->mMinMask, invNorm = 1.0f/(mParent->mDeltaMask);
525 const bool invMask = mParent->isMaskInverted();
526 typename GridT::ConstAccessor maskAcc = mParent->mMask->getAccessor();
527 SamplerT mask(maskAcc, mParent->mMask->transform());
528 for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) {
529 ValueType* speed = leafIter.buffer(speedBuffer).data();
530 bool isZero = true;
531 for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) {
532 const Vec3R xyz = map.applyMap(voxelIter.getCoord().asVec3d());//world space
533 const ValueType a = math::SmoothUnitStep((mask.wsSample(xyz)-min)*invNorm);
534 ValueType& s = speed[voxelIter.pos()];
535 s -= target.wsSample(xyz);
536 s *= invMask ? 1 - a : a;
537 if (!math::isApproxZero(s)) isZero = false;
538 mMaxAbsS = math::Max(mMaxAbsS, math::Abs(s));
539 }
540 if (isZero) speed[0] = std::numeric_limits<ValueType>::max();//tag first voxel
541 }
542 }
543 }
544
545 template<typename GridT, typename InterruptT>
546 template <typename MapT, math::BiasedGradientScheme SpatialScheme,
547 math::TemporalIntegrationScheme TemporalScheme>
548 inline void
549 LevelSetMorphing<GridT, InterruptT>::
550 Morph<MapT, SpatialScheme, TemporalScheme>::
551 sampleAlignedSpeed(const LeafRange& range, Index speedBuffer)
552 {
553 typedef typename LeafType::ValueOnCIter VoxelIterT;
554 mParent->mTracker.checkInterrupter();
555
556 typename GridT::ConstAccessor target = mParent->mTarget->getAccessor();
557
558 if (mParent->mMask == NULL) {
559 for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) {
560 ValueType* speed = leafIter.buffer(speedBuffer).data();
561 bool isZero = true;
562 for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) {
563 ValueType& s = speed[voxelIter.pos()];
564 s -= target.getValue(voxelIter.getCoord());
565 if (!math::isApproxZero(s)) isZero = false;
566 mMaxAbsS = math::Max(mMaxAbsS, math::Abs(s));
567 }
568 if (isZero) speed[0] = std::numeric_limits<ValueType>::max();//tag first voxel
569 }
570 } else {
571 const ValueType min = mParent->mMinMask, invNorm = 1.0f/(mParent->mDeltaMask);
572 const bool invMask = mParent->isMaskInverted();
573 typename GridT::ConstAccessor mask = mParent->mMask->getAccessor();
574 for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) {
575 ValueType* speed = leafIter.buffer(speedBuffer).data();
576 bool isZero = true;
577 for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) {
578 const Coord ijk = voxelIter.getCoord();//index space
579 const ValueType a = math::SmoothUnitStep((mask.getValue(ijk)-min)*invNorm);
580 ValueType& s = speed[voxelIter.pos()];
581 s -= target.getValue(ijk);
582 s *= invMask ? 1 - a : a;
583 if (!math::isApproxZero(s)) isZero = false;
584 mMaxAbsS = math::Max(mMaxAbsS, math::Abs(s));
585 }
586 if (isZero) speed[0] = std::numeric_limits<ValueType>::max();//tag first voxel
587 }
588 }
589 }
590
591 template<typename GridT, typename InterruptT>
592 template <typename MapT, math::BiasedGradientScheme SpatialScheme,
593 math::TemporalIntegrationScheme TemporalScheme>
594 inline void
595 LevelSetMorphing<GridT, InterruptT>::
596 Morph<MapT, SpatialScheme, TemporalScheme>::
597 cook(ThreadingMode mode, size_t swapBuffer)
598 {
599 mParent->mTracker.startInterrupter("Morphing level set");
600
601 const int grainSize = mParent->mTracker.getGrainSize();
602 const LeafRange range = mParent->mTracker.leafs().leafRange(grainSize);
603
604 if (mParent->mTracker.getGrainSize()==0) {
605 (*this)(range);
606 } else if (mode == PARALLEL_FOR) {
607 tbb::parallel_for(range, *this);
608 } else if (mode == PARALLEL_REDUCE) {
609 tbb::parallel_reduce(range, *this);
610 } else {
611 throw std::runtime_error("Undefined threading mode");
612 }
613
614 mParent->mTracker.leafs().swapLeafBuffer(swapBuffer, grainSize == 0);
615
616 mParent->mTracker.endInterrupter();
617 }
618
619 template<typename GridT, typename InterruptT>
620 template<typename MapT, math::BiasedGradientScheme SpatialScheme,
621 math::TemporalIntegrationScheme TemporalScheme>
622 template <int Nominator, int Denominator>
623 inline void
624 LevelSetMorphing<GridT,InterruptT>::
625 Morph<MapT, SpatialScheme, TemporalScheme>::
626 euler(const LeafRange& range, ValueType dt,
627 Index phiBuffer, Index resultBuffer, Index speedBuffer)
628 {
629 typedef math::BIAS_SCHEME<SpatialScheme> SchemeT;
630 typedef typename SchemeT::template ISStencil<GridType>::StencilType StencilT;
631 typedef typename LeafType::ValueOnCIter VoxelIterT;
632 typedef math::GradientNormSqrd<MapT, SpatialScheme> NumGrad;
633
634 static const ValueType Alpha = ValueType(Nominator)/ValueType(Denominator);
635 static const ValueType Beta = ValueType(1) - Alpha;
636
637 mParent->mTracker.checkInterrupter();
638 const MapT& map = *mMap;
639 StencilT stencil(mParent->mTracker.grid());
640
641 for (typename LeafRange::Iterator leafIter = range.begin(); leafIter; ++leafIter) {
642 const ValueType* speed = leafIter.buffer(speedBuffer).data();
643 if (math::isExactlyEqual(speed[0], std::numeric_limits<ValueType>::max())) continue;
644 const ValueType* phi = leafIter.buffer(phiBuffer).data();
645 ValueType* result = leafIter.buffer(resultBuffer).data();
646 for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) {
647 const Index n = voxelIter.pos();
648 if (math::isApproxZero(speed[n])) continue;
649 stencil.moveTo(voxelIter);
650 const ValueType v = stencil.getValue() - dt * speed[n] * NumGrad::result(map, stencil);
651 result[n] = Nominator ? Alpha * phi[n] + Beta * v : v;
652 }//loop over active voxels in the leaf of the mask
653 }//loop over leafs of the level set
654 }
655
656 } // namespace tools
657 } // namespace OPENVDB_VERSION_NAME
658 } // namespace openvdb
659
660 #endif // OPENVDB_TOOLS_LEVEL_SET_MORPH_HAS_BEEN_INCLUDED
661
662 // Copyright (c) 2012-2015 DreamWorks Animation LLC
663 // All rights reserved. This software is distributed under the
664 // Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
FiniteDifference.h
openvdb::v3_1_0::Index
Index32 Index
Definition: Types.h:58
openvdb::v3_1_0::tools::LevelSetMorphing::setTrackerSpatialScheme
void setTrackerSpatialScheme(math::BiasedGradientScheme scheme)
Set the spatial finite-difference scheme.
Definition: LevelSetMorph.h:124
openvdb::v3_1_0::math::HJWENO5_BIAS
Definition: FiniteDifference.h:198
LevelSetTracker.h
Performs multi-threaded interface tracking of narrow band level sets. This is the building-block for ...
openvdb::v3_1_0::tools::LevelSetMorphing::setAlphaMask
void setAlphaMask(const GridT &maskGrid)
Define the alpha mask.
Definition: LevelSetMorph.h:106
openvdb::v3_1_0::tools::LevelSetMorphing::ValueType
TrackerT::ValueType ValueType
Definition: LevelSetMorph.h:83
openvdb::v3_1_0::tools::LevelSetMorphing::setTarget
void setTarget(const GridT &targetGrid)
Redefine the target level set.
Definition: LevelSetMorph.h:103
openvdb::v3_1_0::math::Abs
int32_t Abs(int32_t i)
Return the absolute value of the given quantity.
Definition: Math.h:293
openvdb::v3_1_0::math::TVD_RK1
Definition: FiniteDifference.h:263
openvdb::v3_1_0::ValueError
Definition: Exceptions.h:88
openvdb::v3_1_0::math::isExactlyEqual
bool isExactlyEqual(const T0 &a, const T1 &b)
Return true if a is exactly equal to b.
Definition: Math.h:407
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
openvdb::v3_1_0::tools::LevelSetMorphing::setTrackerTemporalScheme
void setTrackerTemporalScheme(math::TemporalIntegrationScheme scheme)
Set the temporal integration scheme.
Definition: LevelSetMorph.h:134
openvdb::v3_1_0::tools::LevelSetMorphing
Shape morphology of level sets. Morphing from a source narrow-band level sets to a target narrow-band...
Definition: LevelSetMorph.h:74
openvdb::v3_1_0::tools::LevelSetMorphing::LeafRange
TrackerT::LeafRange LeafRange
Definition: LevelSetMorph.h:80
openvdb::v3_1_0::math::BIAS_SCHEME
Definition: Operators.h:152
openvdb::v3_1_0::math::isApproxEqual
bool isApproxEqual(const Type &a, const Type &b)
Return true if a is equal to b to within the default floating-point comparison tolerance.
Definition: Math.h:370
openvdb::v3_1_0::math::GradientNormSqrd
Definition: Operators.h:860
openvdb::v3_1_0::tools::composite::min
const boost::disable_if_c< VecTraits< T >::IsVec, T >::type & min(const T &a, const T &b)
Definition: Composite.h:105
openvdb::v3_1_0::tools::LevelSetTracker::BufferType
LeafManagerType::BufferType BufferType
Definition: LevelSetTracker.h:76
openvdb::v3_1_0::tree::LeafManager::LeafRange::begin
Iterator begin() const
Definition: LeafManager.h:181
openvdb::v3_1_0::tools::LevelSetMorphing::getTrackerTemporalScheme
math::TemporalIntegrationScheme getTrackerTemporalScheme() const
Return the temporal integration scheme.
Definition: LevelSetMorph.h:129
openvdb::v3_1_0::tools::LevelSetTracker::ValueType
TreeType::ValueType ValueType
Definition: LevelSetTracker.h:73
openvdb::v3_1_0::tools::LevelSetMorphing::getGrainSize
int getGrainSize() const
Return the grain size used for multithreading.
Definition: LevelSetMorph.h:144
openvdb::v3_1_0::tools::LevelSetTracker::leafs
LeafManagerType & leafs()
Definition: LevelSetTracker.h:185
OPENVDB_VERSION_NAME
#define OPENVDB_VERSION_NAME
Definition: version.h:43
openvdb::v3_1_0::tree::LeafManager::rebuildAuxBuffers
void rebuildAuxBuffers(size_t auxBuffersPerLeaf, bool serial=false)
Change the number of auxiliary buffers.
Definition: LeafManager.h:283
openvdb::v3_1_0::tools::LevelSetMorphing::TreeType
GridT::TreeType TreeType
Definition: LevelSetMorph.h:78
openvdb::v3_1_0::math::isZero
bool isZero(const Type &x)
Return true if x is exactly equal to zero.
Definition: Math.h:324
openvdb::v3_1_0::tools::LevelSetMorphing::TrackerT
LevelSetTracker< GridT, InterruptT > TrackerT
Definition: LevelSetMorph.h:79
openvdb::v3_1_0::math::Vec3< Real >
openvdb::v3_1_0::tools::LevelSetTracker::checkInterrupter
bool checkInterrupter()
Definition: LevelSetTracker.h:376
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::tree::LeafManager::leafCount
size_t leafCount() const
Return the number of leaf nodes.
Definition: LeafManager.h:304
openvdb::v3_1_0::tools::LevelSetMorphing::isMaskInverted
bool isMaskInverted() const
Return true if the mask is inverted, i.e. min->max in the original mask maps to 1->0 in the inverted ...
Definition: LevelSetMorph.h:173
openvdb::v3_1_0::math::isApproxZero
bool isApproxZero(const Type &x)
Return true if x is equal to zero to within the default floating-point comparison tolerance...
Definition: Math.h:336
openvdb::v3_1_0::math::Max
const Type & Max(const Type &a, const Type &b)
Return the maximum of two values.
Definition: Math.h:561
openvdb::v3_1_0::tools::LevelSetMorphing::setMaskRange
void setMaskRange(ValueType min, ValueType max)
Define the range for the (optional) scalar mask.
Definition: LevelSetMorph.h:164
openvdb::v3_1_0::tools::LevelSetMorphing::setNormCount
void setNormCount(int n)
Set the number of normalizations performed per track or normalize call.
Definition: LevelSetMorph.h:141
openvdb::v3_1_0::math::FIRST_BIAS
Definition: FiniteDifference.h:194
openvdb::v3_1_0::tools::LevelSetMorphing::GridType
GridT GridType
Definition: LevelSetMorph.h:77
openvdb::v3_1_0::math::Transform
Calculate an axis-aligned bounding box in index space from a bounding sphere in world space...
Definition: Transform.h:66
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::LevelSetMorphing::getNormCount
int getNormCount() const
Return the number of normalizations performed per track or normalize call.
Definition: LevelSetMorph.h:139
openvdb::v3_1_0::tools::LevelSetMorphing::invertMask
void invertMask(bool invert=true)
Invert the optional mask, i.e. min->max in the original mask maps to 1->0 in the inverted alpha mask...
Definition: LevelSetMorph.h:176
openvdb::v3_1_0::math::Transform::mapType
Name mapType() const
Return the transformation map&#39;s type-name.
Definition: Transform.h:93
openvdb::v3_1_0::tools::GridSampler
Class that provides the interface for continuous sampling of values in a tree.
Definition: Interpolation.h:310
Interpolation.h
openvdb::v3_1_0::tools::LevelSetMorphing::getSpatialScheme
math::BiasedGradientScheme getSpatialScheme() const
Return the spatial finite-difference scheme.
Definition: LevelSetMorph.h:109
openvdb::v3_1_0::tools::composite::max
const boost::disable_if_c< VecTraits< T >::IsVec, T >::type & max(const T &a, const T &b)
Definition: Composite.h:109
openvdb::v3_1_0::tools::LevelSetMorphing::~LevelSetMorphing
virtual ~LevelSetMorphing()
Definition: LevelSetMorph.h:100
openvdb::v3_1_0::tools::LevelSetMorphing::setSpatialScheme
void setSpatialScheme(math::BiasedGradientScheme scheme)
Set the spatial finite-difference scheme.
Definition: LevelSetMorph.h:111
openvdb::v3_1_0::tools::LevelSetTracker::LeafType
TreeType::LeafNodeType LeafType
Definition: LevelSetTracker.h:72
openvdb::v3_1_0::tools::LevelSetMorphing::minMask
ValueType minMask() const
Return the minimum value of the mask to be used for the derivation of a smooth alpha value...
Definition: LevelSetMorph.h:151
openvdb::v3_1_0::math::SmoothUnitStep
Type SmoothUnitStep(Type x)
Return 0 if x < 0, 1 if x > 1 or else .
Definition: Math.h:272
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::LevelSetMorphing::getTrackerSpatialScheme
math::BiasedGradientScheme getTrackerSpatialScheme() const
Return the spatial finite-difference scheme.
Definition: LevelSetMorph.h:119
openvdb::v3_1_0::tools::LevelSetMorphing::getTemporalScheme
math::TemporalIntegrationScheme getTemporalScheme() const
Return the temporal integration scheme.
Definition: LevelSetMorph.h:114
openvdb::v3_1_0::tools::LevelSetMorphing::BufferType
TrackerT::BufferType BufferType
Definition: LevelSetMorph.h:82
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
openvdb::v3_1_0::tools::LevelSetMorphing::setTemporalScheme
void setTemporalScheme(math::TemporalIntegrationScheme scheme)
Set the temporal integration scheme.
Definition: LevelSetMorph.h:116
openvdb::v3_1_0::tools::LevelSetMorphing::LeafType
TrackerT::LeafType LeafType
Definition: LevelSetMorph.h:81
openvdb::v3_1_0::tools::LevelSetTracker::startInterrupter
void startInterrupter(const char *msg)
Definition: LevelSetTracker.h:360
openvdb::v3_1_0::tools::LevelSetMorphing::setGrainSize
void setGrainSize(int grainsize)
Set the grain size used for multithreading.
Definition: LevelSetMorph.h:147
openvdb::v3_1_0::math::Min
const Type & Min(const Type &a, const Type &b)
Return the minimum of two values.
Definition: Math.h:622
openvdb::v3_1_0::math::TemporalIntegrationScheme
TemporalIntegrationScheme
Temporal integration schemes.
Definition: FiniteDifference.h:261
openvdb::v3_1_0::tools::LevelSetMorphing::maxMask
ValueType maxMask() const
Return the maximum value of the mask to be used for the derivation of a smooth alpha value...
Definition: LevelSetMorph.h:155
openvdb::v3_1_0::tree::LeafManager::LeafRange
Definition: LeafManager.h:131
openvdb::v3_1_0::tools::LevelSetMorphing::LevelSetMorphing
LevelSetMorphing(GridT &sourceGrid, const GridT &targetGrid, InterruptT *interrupt=NULL)
Main constructor.
Definition: LevelSetMorph.h:86