OpenVDB 5.1.0

MultiResGrid.h
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30
51
52 #ifndef OPENVDB_TOOLS_MULTIRESGRID_HAS_BEEN_INCLUDED
53 #define OPENVDB_TOOLS_MULTIRESGRID_HAS_BEEN_INCLUDED
54
55 #include <openvdb/Grid.h>
56 #include <openvdb/math/FiniteDifference.h>
57 #include <openvdb/math/Math.h>
58 #include <openvdb/math/Operators.h>
59 #include <openvdb/math/Stencils.h>
60 #include <openvdb/Metadata.h>
61 #include <openvdb/tree/LeafManager.h>
62 #include <openvdb/tree/NodeManager.h>
63 #include "Interpolation.h"
64 #include "Morphology.h"
65 #include "Prune.h"
66 #include "SignedFloodFill.h"
67 #include "ValueTransformer.h"
68
69 #include <tbb/blocked_range.h>
70 #include <tbb/enumerable_thread_specific.h>
71 #include <tbb/parallel_for.h>
72
73 #include <iostream>
74 #include <sstream>
75 #include <string>
76 #include <vector>
77
78
79 namespace openvdb {
80 OPENVDB_USE_VERSION_NAMESPACE
81 namespace OPENVDB_VERSION_NAME {
82 namespace tools {
83
84 template<typename TreeType>
85 class MultiResGrid: public MetaMap
86 {
87 public:
88 using Ptr = SharedPtr<MultiResGrid>;
89 using ConstPtr = SharedPtr<const MultiResGrid>;
90
91 using ValueType = typename TreeType::ValueType;
92 using ValueOnCIter = typename TreeType::ValueOnCIter;
93 using ValueOnIter = typename TreeType::ValueOnIter;
94 using TreePtr = typename TreeType::Ptr;
95 using ConstTreePtr = typename TreeType::ConstPtr;
96 using GridPtr = typename Grid<TreeType>::Ptr;
97 using ConstGridPtr = typename Grid<TreeType>::ConstPtr;
98
100
106 MultiResGrid(size_t levels, ValueType background, double voxelSize = 1.0);
107
116 MultiResGrid(size_t levels, const Grid<TreeType> &grid, bool useInjection = false);
117
126 MultiResGrid(size_t levels, GridPtr grid, bool useInjection = false);
127
129
133 size_t numLevels() const { return mTrees.size(); }
134
136 static size_t finestLevel() { return 0; }
137
139 size_t coarsestLevel() const { return mTrees.size()-1; }
140
142
146 TreeType& tree(size_t level);
147
151 const TreeType& constTree(size_t level) const;
152
156 TreePtr treePtr(size_t level);
157
161 ConstTreePtr constTreePtr(size_t level) const;
162
164 TreeType& finestTree() { return *mTrees.front(); }
165
167 const TreeType& finestConstTree() const { return *mTrees.front(); }
168
170 TreePtr finestTreePtr() { return mTrees.front(); }
171
173 ConstTreePtr finestConstTreePtr() const { return mTrees.front(); }
174
176 TreeType& coarsestTree() { return *mTrees.back(); }
177
179 const TreeType& coarsestConstTree() const { return *mTrees.back(); }
180
182 TreePtr coarsestTreePtr() { return mTrees.back(); }
183
185 ConstTreePtr coarsestConstTreePtr() const { return mTrees.back(); }
186
188
192 GridPtr grid(size_t level);
193
197 ConstGridPtr grid(size_t level) const;
198
206 template<Index Order>
207 GridPtr createGrid(float level, size_t grainSize = 1) const;
208
212 GridPtrVecPtr grids();
213
217 GridCPtrVecPtr grids() const;
218
220
222 math::Transform& transform() { return *mTransform; }
228 const math::Transform& transform() const { return *mTransform; }
229 const math::Transform& constTransform() const { return *mTransform; }
231
233
235 static Vec3R xyz(const Coord& in_ijk, size_t in_level, size_t out_level);
238 static Vec3R xyz(const Vec3R& in_xyz, size_t in_level, size_t out_level);
239 static Vec3R xyz(const Vec3R& in_xyz, double in_level, double out_level);
241
243
244
245
247 template<Index Order>
257 ValueType sampleValue(const Coord& in_ijk, size_t in_level, size_t out_level) const;
258 template<Index Order>
259 ValueType sampleValue(const Vec3R& in_ijk, size_t in_level, size_t out_level) const;
261
268 template<Index Order>
269 ValueType sampleValue(const Coord& ijk, double level) const;
270
278 template<Index Order>
279 ValueType sampleValue(const Vec3R& xyz, double level) const;
280
282
289 ValueType prolongateVoxel(const Coord& coords, const size_t level) const;
290
291
295 void prolongateActiveVoxels(size_t destlevel, size_t grainSize = 1);
296
298
303 ValueType restrictVoxel(Coord ijk, const size_t level, bool useInjection = false) const;
304
311 void restrictActiveVoxels(size_t destlevel, size_t grainSize = 1);
312
314 void print(std::ostream& = std::cout, int verboseLevel = 1) const;
315
317 std::string getName() const
318 {
319 if (Metadata::ConstPtr meta = (*this)[GridBase::META_GRID_NAME]) return meta->str();
320 return "";
321 }
322
324 void setName(const std::string& name)
325 {
326 this->removeMeta(GridBase::META_GRID_NAME);
327 this->insertMeta(GridBase::META_GRID_NAME, StringMetadata(name));
328 }
329
331 GridClass getGridClass() const
332 {
333 typename StringMetadata::ConstPtr s =
334 this->getMetadata<StringMetadata>(GridBase::META_GRID_CLASS);
335 return s ? GridBase::stringToGridClass(s->value()) : GRID_UNKNOWN;
336 }
337
339 void setGridClass(GridClass cls)
340 {
341 this->insertMeta(GridBase::META_GRID_CLASS, StringMetadata(GridBase::gridClassToString(cls)));
342 }
343
345 void clearGridClass() { this->removeMeta(GridBase::META_GRID_CLASS); }
346
347 private:
348
349 MultiResGrid(const MultiResGrid& other);//disallow copy construction
350 MultiResGrid& operator=(const MultiResGrid& other);//disallow copy assignment
351
352 // For optimal performance we disable registration of the ValueAccessor
353 using Accessor = tree::ValueAccessor<TreeType, false>;
354 using ConstAccessor = tree::ValueAccessor<const TreeType, false>;
355
356 void topDownRestrict(bool useInjection);
357
358 inline void initMeta();
359
360 // Private struct that concurrently creates a mask of active voxel
361 // in a coarse tree from the active voxels in a fine tree
362 struct MaskOp;
363
365 struct RestrictOp;
366
368 struct ProlongateOp;
369
370 // Private struct that performs multi-threaded computation of grids a fraction levels
371 template<Index Order>
372 struct FractionOp;
373
375 template<typename OpType> struct CookOp;
376
377 // Array of shared pointer to trees, level 0 has the highest resolution.
378 std::vector<TreePtr> mTrees;
379 // Shared pointer to a transform associated with the finest level grid
380 typename math::Transform::Ptr mTransform;
381 };// MultiResGrid
382
383 template<typename TreeType>
384 MultiResGrid<TreeType>::
385 MultiResGrid(size_t levels, ValueType background, double voxelSize)
386 : mTrees(levels)
387 , mTransform(math::Transform::createLinearTransform( voxelSize ))
388 {
389 this->initMeta();
390 for (size_t i=0; i<levels; ++i) mTrees[i] = TreePtr(new TreeType(background));
391 }
392
393 template<typename TreeType>
394 MultiResGrid<TreeType>::
395 MultiResGrid(size_t levels, const Grid<TreeType> &grid, bool useInjection)
396 : MetaMap(grid)
397 , mTrees(levels)
398 , mTransform( grid.transform().copy() )
399 {
400 this->initMeta();
401 mTrees[0].reset( new TreeType( grid.tree() ) );// deep copy input tree
402 mTrees[0]->voxelizeActiveTiles();
403 this->topDownRestrict(useInjection);
404 }
405
406 template<typename TreeType>
407 MultiResGrid<TreeType>::
408 MultiResGrid(size_t levels, GridPtr grid, bool useInjection)
409 : MetaMap(*grid)
410 , mTrees(levels)
411 , mTransform( grid->transform().copy() )
412 {
413 this->initMeta();
414 mTrees[0] = grid->treePtr();// steal tree from input grid
415 mTrees[0]->voxelizeActiveTiles();
416 grid->newTree();
417 this->topDownRestrict(useInjection);
418 }
419
420 template<typename TreeType>
421 inline TreeType& MultiResGrid<TreeType>::
422 tree(size_t level)
423 {
424 assert( level < mTrees.size() );
425 return *mTrees[level];
426 }
427
428 template<typename TreeType>
429 inline const TreeType& MultiResGrid<TreeType>::
430 constTree(size_t level) const
431 {
432 assert( level < mTrees.size() );
433 return *mTrees[level];
434 }
435
436 template<typename TreeType>
437 inline typename TreeType::Ptr MultiResGrid<TreeType>::
438 treePtr(size_t level)
439 {
440 assert( level < mTrees.size() );
441 return mTrees[level];
442 }
443
444 template<typename TreeType>
445 inline typename TreeType::ConstPtr MultiResGrid<TreeType>::
446 constTreePtr(size_t level) const
447 {
448 assert( level < mTrees.size() );
449 return mTrees[level];
450 }
451
452 template<typename TreeType>
453 typename Grid<TreeType>::Ptr MultiResGrid<TreeType>::
454 grid(size_t level)
455 {
456 typename Grid<TreeType>::Ptr grid = Grid<TreeType>::create(this->treePtr(level));
457 math::Transform::Ptr xform = mTransform->copy();
458 if (level>0) xform->preScale( Real(1 << level) );
459 grid->setTransform( xform );
460 grid->insertMeta( *this->copyMeta() );
461 grid->insertMeta( "MultiResGrid_Level", Int64Metadata(level));
462 std::stringstream ss;
463 ss << this->getName() << "_level_" << level;
464 grid->setName( ss.str() );
465 return grid;
466 }
467
468 template<typename TreeType>
469 inline typename Grid<TreeType>::ConstPtr MultiResGrid<TreeType>::
470 grid(size_t level) const
471 {
472 return const_cast<MultiResGrid*>(this)->grid(level);
473 }
474
475 template<typename TreeType>
476 template<Index Order>
477 typename Grid<TreeType>::Ptr MultiResGrid<TreeType>::
478 createGrid(float level, size_t grainSize) const
479 {
480 assert( level >= 0.0f && level <= float(mTrees.size()-1) );
481
482 typename Grid<TreeType>::Ptr grid(new Grid<TreeType>(this->constTree(0).background()));
483 math::Transform::Ptr xform = mTransform->copy();
484 xform->preScale( math::Pow(2.0f, level) );
485 grid->setTransform( xform );
486 grid->insertMeta( *(this->copyMeta()) );
487 grid->insertMeta( "MultiResGrid_Level", FloatMetadata(level) );
488 std::stringstream ss;
489 ss << this->getName() << "_level_" << level;
490 grid->setName( ss.str() );
491
492 if ( size_t(floorf(level)) == size_t(ceilf(level)) ) {
493 grid->setTree( this->constTree( size_t(floorf(level))).copy() );
494 } else {
495 FractionOp<Order> tmp(*this, grid->tree(), level, grainSize);
496 if ( grid->getGridClass() == GRID_LEVEL_SET ) {
497 signedFloodFill( grid->tree() );
498 pruneLevelSet( grid->tree() );//only creates inactive tiles
499 }
500 }
501
502 return grid;
503 }
504
505 template<typename TreeType>
506 GridPtrVecPtr MultiResGrid<TreeType>::
507 grids()
508 {
509 GridPtrVecPtr grids( new GridPtrVec );
510 for (size_t level=0; level<mTrees.size(); ++level) grids->push_back(this->grid(level));
511 return grids;
512 }
513
514 template<typename TreeType>
515 GridCPtrVecPtr MultiResGrid<TreeType>::
516 grids() const
517 {
518 GridCPtrVecPtr grids( new GridCPtrVec );
519 for (size_t level=0; level<mTrees.size(); ++level) grids->push_back(this->grid(level));
520 return grids;
521 }
522
523 template<typename TreeType>
524 Vec3R MultiResGrid<TreeType>::
525 xyz(const Coord& in_ijk, size_t in_level, size_t out_level)
526 {
527 return Vec3R( in_ijk.data() ) * Real(1 << in_level) / Real(1 << out_level);
528 }
529
530 template<typename TreeType>
531 Vec3R MultiResGrid<TreeType>::
532 xyz(const Vec3R& in_xyz, size_t in_level, size_t out_level)
533 {
534 return in_xyz * Real(1 << in_level) / Real(1 << out_level);
535 }
536
537 template<typename TreeType>
538 Vec3R MultiResGrid<TreeType>::
539 xyz(const Vec3R& in_xyz, double in_level, double out_level)
540 {
541 return in_xyz * math::Pow(2.0, in_level - out_level);
542
543 }
544
545 template<typename TreeType>
546 template<Index Order>
547 typename TreeType::ValueType MultiResGrid<TreeType>::
548 sampleValue(const Coord& in_ijk, size_t in_level, size_t out_level) const
549 {
550 assert( in_level >= 0 && in_level < mTrees.size() );
551 assert( out_level >= 0 && out_level < mTrees.size() );
552 const ConstAccessor acc(*mTrees[out_level]);// has disabled registration!
553 return tools::Sampler<Order>::sample( acc, this->xyz(in_ijk, in_level, out_level) );
554 }
555
556 template<typename TreeType>
557 template<Index Order>
558 typename TreeType::ValueType MultiResGrid<TreeType>::
559 sampleValue(const Vec3R& in_xyz, size_t in_level, size_t out_level) const
560 {
561 assert( in_level >= 0 && in_level < mTrees.size() );
562 assert( out_level >= 0 && out_level < mTrees.size() );
563 const ConstAccessor acc(*mTrees[out_level]);// has disabled registration!
564 return tools::Sampler<Order>::sample( acc, this->xyz(in_xyz, in_level, out_level) );
565 }
566
567 template<typename TreeType>
568 template<Index Order>
569 typename TreeType::ValueType MultiResGrid<TreeType>::
570 sampleValue(const Coord& ijk, double level) const
571 {
572 assert( level >= 0.0 && level <= double(mTrees.size()-1) );
573 const size_t level0 = size_t(floor(level)), level1 = size_t(ceil(level));
574 const ValueType v0 = this->template sampleValue<Order>( ijk, 0, level0 );
575 if ( level0 == level1 ) return v0;
576 assert( level1 - level0 == 1 );
577 const ValueType v1 = this->template sampleValue<Order>( ijk, 0, level1 );
578 const ValueType a = ValueType(level1 - level);
579 return a * v0 + (ValueType(1) - a) * v1;
580 }
581
582 template<typename TreeType>
583 template<Index Order>
584 typename TreeType::ValueType MultiResGrid<TreeType>::
585 sampleValue(const Vec3R& xyz, double level) const
586 {
587 assert( level >= 0.0 && level <= double(mTrees.size()-1) );
588 const size_t level0 = size_t(floor(level)), level1 = size_t(ceil(level));
589 const ValueType v0 = this->template sampleValue<Order>( xyz, 0, level0 );
590 if ( level0 == level1 ) return v0;
591 assert( level1 - level0 == 1 );
592 const ValueType v1 = this->template sampleValue<Order>( xyz, 0, level1 );
593 const ValueType a = ValueType(level1 - level);
594 return a * v0 + (ValueType(1) - a) * v1;
595 }
596
597 template<typename TreeType>
598 typename TreeType::ValueType MultiResGrid<TreeType>::
599 prolongateVoxel(const Coord& ijk, const size_t level) const
600 {
601 assert( level+1 < mTrees.size() );
602 const ConstAccessor acc(*mTrees[level + 1]);// has disabled registration!
603 return ProlongateOp::run(ijk, acc);
604 }
605
606 template<typename TreeType>
607 void MultiResGrid<TreeType>::
608 prolongateActiveVoxels(size_t destlevel, size_t grainSize)
609 {
610 assert( destlevel < mTrees.size()-1 );
611 TreeType &fineTree = *mTrees[ destlevel ];
612 const TreeType &coarseTree = *mTrees[ destlevel+1 ];
613 CookOp<ProlongateOp> tmp( coarseTree, fineTree, grainSize );
614 }
615
616 template<typename TreeType>
617 typename TreeType::ValueType MultiResGrid<TreeType>::
618 restrictVoxel(Coord ijk, const size_t destlevel, bool useInjection) const
619 {
620 assert( destlevel > 0 && destlevel < mTrees.size() );
621 const TreeType &fineTree = *mTrees[ destlevel-1 ];
622 if ( useInjection ) return fineTree.getValue(ijk<<1);
623 const ConstAccessor acc( fineTree );// has disabled registration!
624 return RestrictOp::run( ijk, acc);
625 }
626
627 template<typename TreeType>
628 void MultiResGrid<TreeType>::
629 restrictActiveVoxels(size_t destlevel, size_t grainSize)
630 {
631 assert( destlevel > 0 && destlevel < mTrees.size() );
632 const TreeType &fineTree = *mTrees[ destlevel-1 ];
633 TreeType &coarseTree = *mTrees[ destlevel ];
634 CookOp<RestrictOp> tmp( fineTree, coarseTree, grainSize );
635 }
636
637 template<typename TreeType>
638 void MultiResGrid<TreeType>::
639 print(std::ostream& os, int verboseLevel) const
640 {
641 os << "MultiResGrid with " << mTrees.size() << " levels\n";
642 for (size_t i=0; i<mTrees.size(); ++i) {
643 os << "Level " << i << ": ";
644 mTrees[i]->print(os, verboseLevel);
645 }
646
647 if ( MetaMap::metaCount() > 0) {
648 os << "Additional metadata:" << std::endl;
649 for (ConstMetaIterator it = beginMeta(), end = endMeta(); it != end; ++it) {
650 os << " " << it->first;
651 if (it->second) {
652 const std::string value = it->second->str();
653 if (!value.empty()) os << ": " << value;
654 }
655 os << "\n";
656 }
657 }
658
659 os << "Transform:" << std::endl;
660 transform().print(os, /*indent=*/" ");
661 os << std::endl;
662 }
663
664 template<typename TreeType>
665 void MultiResGrid<TreeType>::
666 initMeta()
667 {
668 const size_t levels = this->numLevels();
669 if (levels < 2) {
670 OPENVDB_THROW(ValueError, "MultiResGrid: at least two levels are required");
671 }
672 this->insertMeta("MultiResGrid_Levels", Int64Metadata( levels ) );
673 }
674
675 template<typename TreeType>
676 void MultiResGrid<TreeType>::
677 topDownRestrict(bool useInjection)
678 {
679 const bool isLevelSet = this->getGridClass() == GRID_LEVEL_SET;
680 for (size_t n=1; n<mTrees.size(); ++n) {
681 const TreeType &fineTree = *mTrees[n-1];
682 mTrees[n] = TreePtr(new TreeType( fineTree.background() ) );// empty tree
683 TreeType &coarseTree = *mTrees[n];
684 if (useInjection) {// Restriction by injection
685 for (ValueOnCIter it = fineTree.cbeginValueOn(); it; ++it) {
686 const Coord ijk = it.getCoord();
687 if ( (ijk[0] & 1) || (ijk[1] & 1) || (ijk[2] & 1) ) continue;
688 coarseTree.setValue( ijk >> 1, *it );
689 }
690 } else {// Restriction by full-weighting
691 MaskOp tmp(fineTree, coarseTree, 128);
692 this->restrictActiveVoxels(n, 64);
693 }
694 if ( isLevelSet ) {
695 tools::signedFloodFill( coarseTree );
696 tools::pruneLevelSet( coarseTree );//only creates inactive tiles
697 }
698 }// loop over grid levels
699 }
700
701 template<typename TreeType>
702 struct MultiResGrid<TreeType>::MaskOp
703 {
704 using MaskT = typename TreeType::template ValueConverter<ValueMask>::Type;
705 using PoolType = tbb::enumerable_thread_specific<TreeType>;
706 using ManagerT = tree::LeafManager<const MaskT>;
707 using RangeT = typename ManagerT::LeafRange;
708 using VoxelIterT = typename ManagerT::LeafNodeType::ValueOnCIter;
709
710 MaskOp(const TreeType& fineTree, TreeType& coarseTree, size_t grainSize = 1)
711 : mPool(new PoolType( coarseTree ) )// empty coarse tree acts as examplar
712 {
713 assert( coarseTree.empty() );
714
715 // Create Mask of restruction performed on fineTree
716 MaskT mask(fineTree, false, true, TopologyCopy() );
717
718 // Muli-threaded dilation which also linearizes the tree to leaf nodes
719 tools::dilateActiveValues(mask, 1, NN_FACE_EDGE_VERTEX, EXPAND_TILES);
720
721 // Restriction by injection using thread-local storage of coarse tree masks
722 ManagerT leafs( mask );
723 tbb::parallel_for(leafs.leafRange( grainSize ), *this);
724
725 // multithreaded union of thread-local coarse tree masks with the coarse tree
726 using IterT = typename PoolType::const_iterator;
727 for (IterT it=mPool->begin(); it!=mPool->end(); ++it) coarseTree.topologyUnion( *it );
728 delete mPool;
729 }
730 void operator()(const RangeT& range) const
731 {
732 Accessor coarseAcc( mPool->local() );// disabled registration
733 for (typename RangeT::Iterator leafIter = range.begin(); leafIter; ++leafIter) {
734 for (VoxelIterT voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) {
735 Coord ijk = voxelIter.getCoord();
736 if ( (ijk[2] & 1) || (ijk[1] & 1) || (ijk[0] & 1) ) continue;//no overlap
737 coarseAcc.setValueOn( ijk >> 1 );//injection from fine to coarse level
738 }//loop over active voxels in the fine tree
739 }// loop over leaf nodes in the fine tree
740 }
741 PoolType* mPool;
742 };// MaskOp
743
744 template<typename TreeType>
745 template<Index Order>
746 struct MultiResGrid<TreeType>::FractionOp
747 {
748 using MaskT = typename TreeType::template ValueConverter<ValueMask>::Type;
749 using PoolType = tbb::enumerable_thread_specific<MaskT>;
750 using PoolIterT = typename PoolType::iterator;
751 using Manager1 = tree::LeafManager<const TreeType>;
752 using Manager2 = tree::LeafManager<TreeType>;
753 using Range1 = typename Manager1::LeafRange;
754 using Range2 = typename Manager2::LeafRange;
755
756 FractionOp(const MultiResGrid& parent,
757 TreeType& midTree,
758 float level,
759 size_t grainSize = 1)
760 : mLevel( level )
761 , mPool(nullptr)
762 , mTree0( &*(parent.mTrees[size_t(floorf(level))]) )//high-resolution
763 , mTree1( &*(parent.mTrees[size_t(ceilf(level))]) ) //low-resolution
764 {
765 assert( midTree.empty() );
766 assert( mTree0 != mTree1 );
767
768 // Create a pool of thread-local masks
769 MaskT examplar( false );
770 mPool = new PoolType( examplar );
771
772 {// create mask from re-mapping coarse tree to mid-level tree
773 tree::LeafManager<const TreeType> manager( *mTree1 );
774 tbb::parallel_for( manager.leafRange(grainSize), *this );
775 }
776
777 // Multi-threaded dilation of mask
778 tbb::parallel_for(tbb::blocked_range<PoolIterT>(mPool->begin(),mPool->end(),1), *this);
779
780 // Union thread-local coarse tree masks into the coarse tree
781 for (PoolIterT it=mPool->begin(); it!=mPool->end(); ++it) midTree.topologyUnion( *it );
782 delete mPool;
783
784 {// Interpolate values into the static mid level tree
785 Manager2 manager( midTree );
786 tbb::parallel_for(manager.leafRange(grainSize), *this);
787 }
788 }
789 void operator()(const Range1& range) const
790 {
791 using VoxelIter = typename Manager1::LeafNodeType::ValueOnCIter;
792 // Let mLevel = level + frac, where
793 // level is integer part of mLevel and frac is the fractional part
794 // low-res voxel size in world units = dx1 = 2^(level + 1)
795 // mid-res voxel size in world units = dx = 2^(mLevel) = 2^(level + frac)
796 // low-res index -> world: ijk * dx1
797 // world -> mid-res index: world / dx
798 // low-res index -> mid-res index: (ijk * dx1) / dx = ijk * scale where
799 // scale = dx1/dx = 2^(level+1)/2^(level+frac) = 2^(1-frac)
800 const float scale = math::Pow(2.0f, 1.0f - math::FractionalPart(mLevel));
801 tree::ValueAccessor<MaskT, false> acc( mPool->local() );// disabled registration
802 for (typename Range1::Iterator leafIter = range.begin(); leafIter; ++leafIter) {
803 for (VoxelIter voxelIter = leafIter->cbeginValueOn(); voxelIter; ++voxelIter) {
804 Coord ijk = voxelIter.getCoord();
805 ijk[0] = int(math::Round(ijk[0] * scale));
806 ijk[1] = int(math::Round(ijk[1] * scale));
807 ijk[2] = int(math::Round(ijk[2] * scale));
808 acc.setValueOn( ijk );
809 }//loop over active voxels in the fine tree
810 }// loop over leaf nodes in the fine tree
811 }
812 void operator()(const tbb::blocked_range<PoolIterT>& range) const
813 {
814 for (PoolIterT it=range.begin(); it!=range.end(); ++it) {
815 tools::dilateVoxels( *it, 1, NN_FACE_EDGE_VERTEX);
816 }
817 }
818 void operator()(const Range2 &r) const
819 {
820 using VoxelIter = typename TreeType::LeafNodeType::ValueOnIter;
821 // Let mLevel = level + frac, where
822 // level is integer part of mLevel and frac is the fractional part
823 // high-res voxel size in world units = dx0 = 2^(level)
824 // low-res voxel size in world units = dx1 = 2^(level+1)
825 // mid-res voxel size in world units = dx = 2^(mLevel) = 2^(level + frac)
826 // mid-res index -> world: ijk * dx
827 // world -> high-res index: world / dx0
828 // world -> low-res index: world / dx1
829 // mid-res index -> high-res index: (ijk * dx) / dx0 = ijk * scale0 where
830 // scale0 = dx/dx0 = 2^(level+frac)/2^(level) = 2^(frac)
831 // mid-res index -> low-res index: (ijk * dx) / dx1 = ijk * scale1 where
832 // scale1 = dx/dx1 = 2^(level+frac)/2^(level+1) = 2^(frac-1)
833 const float b = math::FractionalPart(mLevel), a = 1.0f - b;
834 const float scale0 = math::Pow( 2.0f, b );
835 const float scale1 = math::Pow( 2.0f,-a );
836 ConstAccessor acc0( *mTree0 ), acc1( *mTree1 );
837 for (typename Range2::Iterator leafIter = r.begin(); leafIter; ++leafIter) {
838 for (VoxelIter voxelIter = leafIter->beginValueOn(); voxelIter; ++voxelIter) {
839 const Vec3R xyz = Vec3R( voxelIter.getCoord().data() );// mid level coord
840 const ValueType v0 = tools::Sampler<Order>::sample( acc0, xyz * scale0 );
841 const ValueType v1 = tools::Sampler<Order>::sample( acc1, xyz * scale1 );
842 voxelIter.setValue( ValueType(a*v0 + b*v1) );
843 }
844 }
845 }
846 const float mLevel;
847 PoolType* mPool;
848 const TreeType *mTree0, *mTree1;
849 };// FractionOp
850
851
852 template<typename TreeType>
853 template<typename OperatorType>
854 struct MultiResGrid<TreeType>::CookOp
855 {
856 using ManagerT = tree::LeafManager<TreeType>;
857 using RangeT = typename ManagerT::LeafRange;
858
859 CookOp(const TreeType& srcTree, TreeType& dstTree, size_t grainSize): acc(srcTree)
860 {
861 ManagerT leafs(dstTree);
862 tbb::parallel_for(leafs.leafRange(grainSize), *this);
863 }
864 CookOp(const CookOp &other): acc(other.acc.tree()) {}
865
866 void operator()(const RangeT& range) const
867 {
868 for (auto leafIt = range.begin(); leafIt; ++leafIt) {
869 auto& phi = leafIt.buffer(0);
870 for (auto voxelIt = leafIt->beginValueOn(); voxelIt; ++voxelIt) {
871 phi.setValue(voxelIt.pos(), OperatorType::run(voxelIt.getCoord(), acc));
872 }
873 }
874 }
875
876 const ConstAccessor acc;
877 };// CookOp
878
879
880 template<typename TreeType>
881 struct MultiResGrid<TreeType>::RestrictOp
882 {
886 static ValueType run(Coord ijk, const ConstAccessor &acc)
887 {
888 ijk <<= 1;
889 // Overlapping grid point
890 ValueType v = 8*acc.getValue(ijk);
891 // neighbors in one axial direction
892 v += 4*(acc.getValue(ijk.offsetBy(-1, 0, 0)) + acc.getValue(ijk.offsetBy( 1, 0, 0)) +// x
893 acc.getValue(ijk.offsetBy( 0,-1, 0)) + acc.getValue(ijk.offsetBy( 0, 1, 0)) +// y
894 acc.getValue(ijk.offsetBy( 0, 0,-1)) + acc.getValue(ijk.offsetBy( 0, 0, 1)));// z
895 // neighbors in two axial directions
896 v += 2*(acc.getValue(ijk.offsetBy(-1,-1, 0)) + acc.getValue(ijk.offsetBy(-1, 1, 0)) +// xy
897 acc.getValue(ijk.offsetBy( 1,-1, 0)) + acc.getValue(ijk.offsetBy( 1, 1, 0)) +// xy
898 acc.getValue(ijk.offsetBy(-1, 0,-1)) + acc.getValue(ijk.offsetBy(-1, 0, 1)) +// xz
899 acc.getValue(ijk.offsetBy( 1, 0,-1)) + acc.getValue(ijk.offsetBy( 1, 0, 1)) +// xz
900 acc.getValue(ijk.offsetBy( 0,-1,-1)) + acc.getValue(ijk.offsetBy( 0,-1, 1)) +// yz
901 acc.getValue(ijk.offsetBy( 0, 1,-1)) + acc.getValue(ijk.offsetBy( 0, 1, 1)));// yz
902 // neighbors in three axial directions
903 for (int i=-1; i<=1; i+=2) {
904 for (int j=-1; j<=1; j+=2) {
905 for (int k=-1; k<=1; k+=2) v += acc.getValue(ijk.offsetBy(i,j,k));// xyz
906 }
907 }
908 v *= ValueType(1.0f/64.0f);
909 return v;
910 }
911 };// RestrictOp
912
913 template<typename TreeType>
914 struct MultiResGrid<TreeType>::ProlongateOp
915 {
919 static ValueType run(const Coord& ijk, const ConstAccessor &acc)
920 {
921 switch ( (ijk[0] & 1) | ((ijk[1] & 1) << 1) | ((ijk[2] & 1) << 2) ) {
922 case 0:// all even
923 return acc.getValue(ijk>>1);
924 case 1:// x is odd
925 return ValueType(0.5)*(acc.getValue(ijk.offsetBy(-1,0,0)>>1) +
926 acc.getValue(ijk.offsetBy( 1,0,0)>>1));
927 case 2:// y is odd
928 return ValueType(0.5)*(acc.getValue(ijk.offsetBy(0,-1,0)>>1) +
929 acc.getValue(ijk.offsetBy(0, 1,0)>>1));
930 case 3:// x&y are odd
931 return ValueType(0.25)*(acc.getValue(ijk.offsetBy(-1,-1,0)>>1) +
932 acc.getValue(ijk.offsetBy(-1, 1,0)>>1) +
933 acc.getValue(ijk.offsetBy( 1,-1,0)>>1) +
934 acc.getValue(ijk.offsetBy( 1, 1,0)>>1));
935 case 4:// z is odd
936 return ValueType(0.5)*(acc.getValue(ijk.offsetBy(0,0,-1)>>1) +
937 acc.getValue(ijk.offsetBy(0,0, 1)>>1));
938 case 5:// x&z are odd
939 return ValueType(0.25)*(acc.getValue(ijk.offsetBy(-1,0,-1)>>1) +
940 acc.getValue(ijk.offsetBy(-1,0, 1)>>1) +
941 acc.getValue(ijk.offsetBy( 1,0,-1)>>1) +
942 acc.getValue(ijk.offsetBy( 1,0, 1)>>1));
943 case 6:// y&z are odd
944 return ValueType(0.25)*(acc.getValue(ijk.offsetBy(0,-1,-1)>>1) +
945 acc.getValue(ijk.offsetBy(0,-1, 1)>>1) +
946 acc.getValue(ijk.offsetBy(0, 1,-1)>>1) +
947 acc.getValue(ijk.offsetBy(0, 1, 1)>>1));
948 }
949 // all are odd
950 ValueType v = zeroVal<ValueType>();
951 for (int i=-1; i<=1; i+=2) {
952 for (int j=-1; j<=1; j+=2) {
953 for (int k=-1; k<=1; k+=2) v += acc.getValue(ijk.offsetBy(i,j,k)>>1);// xyz
954 }
955 }
956 return ValueType(0.125) * v;
957 }
958 };// ProlongateOp
959
960 } // namespace tools
961 } // namespace OPENVDB_VERSION_NAME
962 } // namespace openvdb
963
964 #endif // OPENVDB_TOOLS_MULTIRESGRID_HAS_BEEN_INCLUDED
965
966 // Copyright (c) 2012-2018 DreamWorks Animation LLC
967 // All rights reserved. This software is distributed under the
968 // Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
openvdb::v5_1::tree::ValueAccessor::getValue
const ValueType & getValue(const Coord &xyz) const
Return the value of the voxel at the given coordinates.
Definition: ValueAccessor.h:257
openvdb::v5_1::MetaMap::insertMeta
void insertMeta(const Name &, const Metadata &value)
Insert a new metadata field or overwrite the value of an existing field.
FiniteDifference.h
openvdb::v5_1::tools::MultiResGrid::ConstGridPtr
typename Grid< TreeType >::ConstPtr ConstGridPtr
Definition: MultiResGrid.h:97
openvdb::v5_1::Grid::ConstPtr
SharedPtr< const Grid > ConstPtr
Definition: Grid.h:503
openvdb::v5_1::tools::MultiResGrid::GridPtr
typename Grid< TreeType >::Ptr GridPtr
Definition: MultiResGrid.h:96
openvdb::v5_1::tools::MultiResGrid::finestLevel
static size_t finestLevel()
Return the level of the finest grid (always 0)
Definition: MultiResGrid.h:136
openvdb::v5_1::Metadata::ConstPtr
SharedPtr< const Metadata > ConstPtr
Definition: Metadata.h:54
openvdb::v5_1::math::Coord::data
const Int32 * data() const
Definition: Coord.h:166
Math.h
General-purpose arithmetic and comparison routines, most of which accept arbitrary value types (or at...
ValueTransformer.h
openvdb::v5_1::tools::MultiResGrid::ConstTreePtr
typename TreeType::ConstPtr ConstTreePtr
Definition: MultiResGrid.h:95
Metadata.h
openvdb::v5_1::io::getGridClass
OPENVDB_API uint32_t getGridClass(std::ios_base &)
Return the class (GRID_LEVEL_SET, GRID_UNKNOWN, etc.) of the grid currently being read from or writte...
openvdb::v5_1::tools::MultiResGrid::MaskOp::RangeT
typename ManagerT::LeafRange RangeT
Definition: MultiResGrid.h:707
openvdb::v5_1::tools::MultiResGrid::transform
const math::Transform & transform() const
Return a reference to the finest grid&#39;s transform, which might be shared with other grids...
Definition: MultiResGrid.h:228
openvdb::v5_1::Real
double Real
Definition: Types.h:67
OPENVDB_THROW
#define OPENVDB_THROW(exception, message)
Definition: Exceptions.h:109
NodeManager.h
NodeManager produces linear arrays of all tree nodes allowing for efficient threading and bottom-up p...
openvdb::v5_1::tools::NN_FACE_EDGE_VERTEX
Definition: Morphology.h:85
openvdb::v5_1::tools::MultiResGrid::ValueOnIter
typename TreeType::ValueOnIter ValueOnIter
Definition: MultiResGrid.h:93
openvdb::v5_1::tools::MultiResGrid::getGridClass
GridClass getGridClass() const
Return the class of volumetric data (level set, fog volume, etc.) stored in this grid.
Definition: MultiResGrid.h:331
openvdb::v5_1::math::Round
float Round(float x)
Return x rounded to the nearest integer.
Definition: Math.h:773
openvdb::v5_1::tools::MultiResGrid::coarsestConstTreePtr
ConstTreePtr coarsestConstTreePtr() const
Return a const shared pointer to the tree at the coarsest level.
Definition: MultiResGrid.h:185
openvdb::v5_1::math::Vec3< Real >
openvdb::v5_1::tools::MultiResGrid::MaskOp::MaskT
typename TreeType::template ValueConverter< ValueMask >::Type MaskT
Definition: MultiResGrid.h:704
openvdb::v5_1::tools::MultiResGrid::xyz
static Vec3R xyz(const Coord &in_ijk, size_t in_level, size_t out_level)
Return the floating-point index coordinate at out_level given the index coordinate in_xyz at in_level...
Definition: MultiResGrid.h:525
openvdb::v5_1::math::scale
MatType scale(const Vec3< typename MatType::value_type > &s)
Return a matrix that scales by s.
Definition: Mat.h:645
openvdb::v5_1::GridBase::setTransform
void setTransform(math::Transform::Ptr)
Associate the given transform with this grid, in place of its existing transform. ...
Definition: Grid.h:1112
openvdb::v5_1::tools::MultiResGrid::coarsestConstTree
const TreeType & coarsestConstTree() const
Return a const reference to the tree at the coarsest level.
Definition: MultiResGrid.h:179
openvdb::v5_1::SharedPtr
std::shared_ptr< T > SharedPtr
Definition: Types.h:139
openvdb::v5_1::MetaMap::ConstPtr
SharedPtr< const MetaMap > ConstPtr
Definition: MetaMap.h:50
openvdb::v5_1::tools::MultiResGrid::setName
void setName(const std::string &name)
Set the name of this MultiResGrid.
Definition: MultiResGrid.h:324
openvdb::v5_1::tools::MultiResGrid::coarsestLevel
size_t coarsestLevel() const
Return the level of the coarsest grid, i.e. numLevels()-1.
Definition: MultiResGrid.h:139
openvdb::v5_1::tools::MultiResGrid::ProlongateOp::run
static ValueType run(const Coord &ijk, const ConstAccessor &acc)
Interpolate values from a coarse grid (acc) into the index space (ijk) of a fine grid.
Definition: MultiResGrid.h:919
openvdb::v5_1::tools::MultiResGrid::numLevels
size_t numLevels() const
Return the number of levels, i.e. trees, in this MultiResGrid.
Definition: MultiResGrid.h:133
openvdb::v5_1::math::FractionalPart
Type FractionalPart(Type x)
Return the fractional part of x.
Definition: Math.h:797
openvdb::v5_1::GridBase::setName
void setName(const std::string &)
Specify a name for this grid.
openvdb::v5_1::TopologyCopy
Tag dispatch class that distinguishes topology copy constructors from deep copy constructors.
Definition: Types.h:515
openvdb::v5_1::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:416
Prune.h
Defined various multi-threaded utility functions for trees.
openvdb::v5_1::GridBase::stringToGridClass
static GridClass stringToGridClass(const std::string &)
Return the class of volumetric data specified by the given string.
openvdb::v5_1::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:110
openvdb::v5_1::tools::Sampler::sample
static bool sample(const TreeT &inTree, const Vec3R &inCoord, typename TreeT::ValueType &result)
Sample inTree at the floating-point index coordinate inCoord and store the result in result...
openvdb::v5_1::tools::MultiResGrid::MaskOp::operator()
void operator()(const RangeT &range) const
Definition: MultiResGrid.h:730
openvdb::v5_1::MetaMap::metaCount
size_t metaCount() const
Definition: MetaMap.h:118
openvdb::v5_1::tools::dilateVoxels
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:857
OPENVDB_VERSION_NAME
#define OPENVDB_VERSION_NAME
The version namespace name for this library version.
Definition: version.h:136
openvdb::v5_1::tools::MultiResGrid::ValueType
typename TreeType::ValueType ValueType
Definition: MultiResGrid.h:91
openvdb::v5_1::math::Transform
Definition: Transform.h:66
openvdb::v5_1::ValueError
Definition: Exceptions.h:92
SignedFloodFill.h
Propagate the signs of distance values from the active voxels in the narrow band to the inactive valu...
openvdb::v5_1::tools::MultiResGrid::MaskOp::mPool
PoolType * mPool
Definition: MultiResGrid.h:741
openvdb::v5_1::tools::MultiResGrid::coarsestTree
TreeType & coarsestTree()
Return a reference to the tree at the coarsest level.
Definition: MultiResGrid.h:176
openvdb::v5_1::tools::MultiResGrid::MaskOp::PoolType
tbb::enumerable_thread_specific< TreeType > PoolType
Definition: MultiResGrid.h:705
openvdb::v5_1::tools::MultiResGrid::MaskOp::MaskOp
MaskOp(const TreeType &fineTree, TreeType &coarseTree, size_t grainSize=1)
Definition: MultiResGrid.h:710
openvdb::v5_1::createGrid
GridType::Ptr createGrid(const typename GridType::ValueType &background)
Create a new grid of type GridType with a given background value.
Definition: Grid.h:1581
openvdb::v5_1::tools::MultiResGrid::ProlongateOp
Definition: MultiResGrid.h:914
Morphology.h
Implementation of morphological dilation and erosion.
openvdb
Definition: Exceptions.h:40
openvdb::v5_1::tree::LeafManager::LeafRange
Definition: LeafManager.h:127
openvdb::v5_1::tools::MultiResGrid::RestrictOp
Definition: MultiResGrid.h:881
openvdb::v5_1::tools::MultiResGrid::constTreePtr
ConstTreePtr constTreePtr(size_t level) const
Return a const shared pointer to the tree at the specified level.
Definition: MultiResGrid.h:446
openvdb::v5_1::tools::EXPAND_TILES
Definition: Morphology.h:100
openvdb::v5_1::tools::MultiResGrid::restrictVoxel
ValueType restrictVoxel(Coord ijk, const size_t level, bool useInjection=false) const
Definition: MultiResGrid.h:618
openvdb::v5_1::GridPtrVecPtr
SharedPtr< GridPtrVec > GridPtrVecPtr
Definition: Grid.h:440
openvdb::v5_1::MetaMap::ConstMetaIterator
MetadataMap::const_iterator ConstMetaIterator
Definition: MetaMap.h:55
openvdb::v5_1::GRID_LEVEL_SET
Definition: Types.h:274
openvdb::v5_1::math::Coord::offsetBy
Coord offsetBy(Int32 dx, Int32 dy, Int32 dz) const
Definition: Coord.h:118
openvdb::v5_1::GridBase::META_GRID_NAME
static const char *const META_GRID_NAME
Definition: Grid.h:293
openvdb::v5_1::MetaMap::Ptr
SharedPtr< MetaMap > Ptr
Definition: MetaMap.h:49
openvdb::v5_1::tools::MultiResGrid::getName
std::string getName() const
Return a string with the name of this MultiResGrid.
Definition: MultiResGrid.h:317
openvdb::v5_1::GridCPtrVec
std::vector< GridBase::ConstPtr > GridCPtrVec
Definition: Grid.h:442
openvdb::v5_1::tools::MultiResGrid::constTransform
const math::Transform & constTransform() const
Return a reference to the finest grid&#39;s transform, which might be shared with other grids...
Definition: MultiResGrid.h:229
openvdb::v5_1::TypedMetadata::ConstPtr
SharedPtr< const TypedMetadata< T > > ConstPtr
Definition: Metadata.h:175
openvdb::v5_1::StringMetadata
TypedMetadata< std::string > StringMetadata
Definition: Metadata.h:413
openvdb::v5_1::tools::MultiResGrid::ValueOnCIter
typename TreeType::ValueOnCIter ValueOnCIter
Definition: MultiResGrid.h:92
openvdb::v5_1::tools::MultiResGrid::TreePtr
typename TreeType::Ptr TreePtr
Definition: MultiResGrid.h:94
openvdb::v5_1::tools::MultiResGrid::tree
TreeType & tree(size_t level)
Return a reference to the tree at the specified level.
Definition: MultiResGrid.h:422
openvdb::v5_1::Vec3R
math::Vec3< Real > Vec3R
Definition: Types.h:79
openvdb::v5_1::Grid::tree
TreeType & tree()
Return a reference to this grid&#39;s tree, which might be shared with other grids.
Definition: Grid.h:797
openvdb::v5_1::tools::MultiResGrid::RestrictOp::run
static ValueType run(Coord ijk, const ConstAccessor &acc)
Static method that performs restriction by full weighting.
Definition: MultiResGrid.h:886
openvdb::v5_1::tools::MultiResGrid::grids
GridPtrVecPtr grids()
Return a shared pointer to a vector of all the base grids in this instance of the MultiResGrid...
Definition: MultiResGrid.h:507
openvdb::v5_1::tools::MultiResGrid::setGridClass
void setGridClass(GridClass cls)
Specify the class of volumetric data (level set, fog volume, etc.) stored in this grid...
Definition: MultiResGrid.h:339
openvdb::v5_1::GRID_UNKNOWN
Definition: Types.h:273
Interpolation.h
openvdb::v5_1::Grid::Ptr
SharedPtr< Grid > Ptr
Definition: Grid.h:502
openvdb::v5_1::math::Coord
Signed (x, y, z) 32-bit integer coordinates.
Definition: Coord.h:51
openvdb::v5_1::tools::MultiResGrid::prolongateActiveVoxels
void prolongateActiveVoxels(size_t destlevel, size_t grainSize=1)
Definition: MultiResGrid.h:608
openvdb::v5_1::tools::MultiResGrid::finestConstTree
const TreeType & finestConstTree() const
Return a const reference to the tree at the finest level.
Definition: MultiResGrid.h:167
openvdb::v5_1::tools::MultiResGrid::prolongateVoxel
ValueType prolongateVoxel(const Coord &coords, const size_t level) const
Return the value at coordinate location in level tree from the coarser tree at level+1 using trilinea...
Definition: MultiResGrid.h:599
openvdb::v5_1::tools::MultiResGrid::restrictActiveVoxels
void restrictActiveVoxels(size_t destlevel, size_t grainSize=1)
Definition: MultiResGrid.h:629
openvdb::v5_1::GridClass
GridClass
Definition: Types.h:272
openvdb::v5_1::GridPtrVec
std::vector< GridBase::Ptr > GridPtrVec
Definition: Grid.h:437
Grid.h
openvdb::v5_1::tree::LeafManager::leafRange
LeafRange leafRange(size_t grainsize=1) const
Return a TBB-compatible LeafRange.
Definition: LeafManager.h:386
openvdb::v5_1::GridBase::gridClassToString
static std::string gridClassToString(GridClass)
Return the metadata string value for the given class of volumetric data.
openvdb::v5_1::tools::signedFloodFill
void signedFloodFill(TreeOrLeafManagerT &tree, bool threaded=true, size_t grainSize=1, Index minLevel=0)
Set the values of all inactive voxels and tiles of a narrow-band level set from the signs of the acti...
Definition: SignedFloodFill.h:294
openvdb::v5_1::Grid::setTree
void setTree(TreeBase::Ptr) override
Associate the given tree with this grid, in place of its existing tree.
Definition: Grid.h:1309
openvdb::v5_1::tools::MultiResGrid
Definition: MultiResGrid.h:85
openvdb::v5_1::tree::ValueAccessor
Definition: ValueAccessor.h:220
openvdb::v5_1::math::Transform::Ptr
SharedPtr< Transform > Ptr
Definition: Transform.h:69
openvdb::v5_1::tools::MultiResGrid::MaskOp
Definition: MultiResGrid.h:702
Stencils.h
Defines various finite difference stencils by means of the "curiously recurring template pattern" on ...
openvdb::v5_1::Grid::create
static Ptr create()
Return a new grid with background value zero.
Definition: Grid.h:1186
openvdb::v5_1::tools::MultiResGrid::finestConstTreePtr
ConstTreePtr finestConstTreePtr() const
Return a const shared pointer to the tree at the finest level.
Definition: MultiResGrid.h:173
openvdb::v5_1::FloatMetadata
TypedMetadata< float > FloatMetadata
Definition: Metadata.h:410
openvdb::v5_1::Grid
Container class that associates a tree with a transform and metadata.
Definition: Grid.h:55
openvdb::v5_1::tools::MultiResGrid::MaskOp::VoxelIterT
typename ManagerT::LeafNodeType::ValueOnCIter VoxelIterT
Definition: MultiResGrid.h:708
OPENVDB_USE_VERSION_NAMESPACE
#define OPENVDB_USE_VERSION_NAMESPACE
Definition: version.h:188
openvdb::v5_1::tools::MultiResGrid::MultiResGrid
MultiResGrid(size_t levels, ValueType background, double voxelSize=1.0)
Constructor of empty grids.
Definition: MultiResGrid.h:385
LeafManager.h
A LeafManager manages a linear array of pointers to a given tree&#39;s leaf nodes, as well as optional au...
openvdb::v5_1::tools::MultiResGrid::coarsestTreePtr
TreePtr coarsestTreePtr()
Return a shared pointer to the tree at the coarsest level.
Definition: MultiResGrid.h:182
openvdb::v5_1::GridBase::getGridClass
GridClass getGridClass() const
Return the class of volumetric data (level set, fog volume, etc.) stored in this grid.
openvdb::v5_1::tools::MultiResGrid::finestTreePtr
TreePtr finestTreePtr()
Return a shared pointer to the tree at the finest level.
Definition: MultiResGrid.h:170
openvdb::v5_1::tools::MultiResGrid::grid
GridPtr grid(size_t level)
Return a shared pointer to the grid at the specified integer level.
Definition: MultiResGrid.h:454
openvdb::v5_1::tools::MultiResGrid::clearGridClass
void clearGridClass()
Remove the setting specifying the class of this grid&#39;s volumetric data.
Definition: MultiResGrid.h:345
openvdb::v5_1::tools::MultiResGrid::sampleValue
ValueType sampleValue(const Coord &in_ijk, size_t in_level, size_t out_level) const
Return the value at the specified coordinate position using interpolation of the specified order into...
openvdb::v5_1::tools::MultiResGrid::treePtr
TreePtr treePtr(size_t level)
Return a shared pointer to the tree at the specified level.
Definition: MultiResGrid.h:438
openvdb::v5_1::tools::dilateActiveValues
void dilateActiveValues(TreeType &tree, int iterations=1, NearestNeighbors nn=NN_FACE, TilePolicy mode=PRESERVE_TILES)
Topologically dilate all active values (i.e. both voxels and tiles) in a tree using one of three near...
Definition: Morphology.h:1078
openvdb::v5_1::MetaMap
Container that maps names (strings) to values of arbitrary types.
Definition: MetaMap.h:46
openvdb::v5_1::tools::MultiResGrid::print
void print(std::ostream &=std::cout, int verboseLevel=1) const
Output a human-readable description of this MultiResGrid.
Definition: MultiResGrid.h:639
openvdb::v5_1::tools::MultiResGrid::constTree
const TreeType & constTree(size_t level) const
Return a const reference to the tree at the specified level.
Definition: MultiResGrid.h:430
openvdb::v5_1::GridCPtrVecPtr
SharedPtr< GridCPtrVec > GridCPtrVecPtr
Definition: Grid.h:445
openvdb::v5_1::math::Pow
Type Pow(Type x, int n)
Return xn.
Definition: Math.h:515
openvdb::v5_1::Int64Metadata
TypedMetadata< int64_t > Int64Metadata
Definition: Metadata.h:412
openvdb::v5_1::tools::MultiResGrid::finestTree
TreeType & finestTree()
Return a reference to the tree at the finest level.
Definition: MultiResGrid.h:164
openvdb::v5_1::GridBase::META_GRID_CLASS
static const char *const META_GRID_CLASS
Definition: Grid.h:291
openvdb::v5_1::tools::MultiResGrid::createGrid
GridPtr createGrid(float level, size_t grainSize=1) const
Return a shared pointer to a new grid at the specified floating-point level.
Operators.h