OpenVDB: LevelSetUtil.h Source File

OpenVDB 3.2.0

LevelSetUtil.h
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37
38
39 #ifndef OPENVDB_TOOLS_LEVEL_SET_UTIL_HAS_BEEN_INCLUDED
40 #define OPENVDB_TOOLS_LEVEL_SET_UTIL_HAS_BEEN_INCLUDED
41
42 #include "MeshToVolume.h" // for traceExteriorBoundaries
43 #include "SignedFloodFill.h" // for signedFloodFillWithValues
44
45 #include <openvdb/Types.h>
46 #include <openvdb/Grid.h>
47
48 #include <tbb/blocked_range.h>
49 #include <tbb/parallel_for.h>
50 #include <tbb/parallel_reduce.h>
51 #include <tbb/parallel_sort.h>
52
53 #include <limits>
54
55 namespace openvdb {
56 OPENVDB_USE_VERSION_NAMESPACE
57 namespace OPENVDB_VERSION_NAME {
58 namespace tools {
59
60 // MS Visual C++ requires this extra level of indirection in order to compile
61 // THIS MUST EXIST IN AN UNNAMED NAMESPACE IN ORDER TO COMPILE ON WINDOWS
62 namespace {
63
64 template<typename GridType>
65 inline typename GridType::ValueType lsutilGridMax()
66 {
67 return std::numeric_limits<typename GridType::ValueType>::max();
68 }
69
70 template<typename GridType>
71 inline typename GridType::ValueType lsutilGridZero()
72 {
73 return zeroVal<typename GridType::ValueType>();
74 }
75
76 } // unnamed namespace
77
78
80
81
96 template<class GridType>
97 inline void
98 sdfToFogVolume(
99 GridType& grid,
100 typename GridType::ValueType cutoffDistance = lsutilGridMax<GridType>());
101
102
113 template<class GridOrTreeType>
114 inline typename GridOrTreeType::template ValueConverter<bool>::Type::Ptr
115 sdfInteriorMask(
116 const GridOrTreeType& volume,
117 typename GridOrTreeType::ValueType isovalue = lsutilGridZero<GridOrTreeType>());
118
119
140 template<typename GridOrTreeType>
141 inline typename GridOrTreeType::template ValueConverter<bool>::Type::Ptr
142 extractEnclosedRegion(const GridOrTreeType& volume,
143 typename GridOrTreeType::ValueType isovalue = lsutilGridZero<GridOrTreeType>(),
144 const typename TreeAdapter<GridOrTreeType>::TreeType::template ValueConverter<bool>::Type* fillMask = NULL);
145
146
151 template<typename GridOrTreeType>
152 inline typename GridOrTreeType::template ValueConverter<bool>::Type::Ptr
153 extractIsosurfaceMask(const GridOrTreeType& volume, typename GridOrTreeType::ValueType isovalue);
154
155
161 template<typename GridOrTreeType>
162 inline void
163 extractActiveVoxelSegmentMasks(const GridOrTreeType& volume,
164 std::vector<typename GridOrTreeType::template ValueConverter<bool>::Type::Ptr>& masks);
165
166
174 template<typename GridOrTreeType>
175 inline void
176 segmentActiveVoxels(const GridOrTreeType& volume, std::vector<typename GridOrTreeType::Ptr>& segments);
177
178
187 template<typename GridOrTreeType>
188 inline void
189 segmentSDF(const GridOrTreeType& volume, std::vector<typename GridOrTreeType::Ptr>& segments);
190
191
194
195 // Internal utility objects and implementation details
196
197
198 namespace level_set_util_internal {
199
200
201 template<typename LeafNodeType>
202 struct MaskInteriorVoxels {
203
204 typedef typename LeafNodeType::ValueType ValueType;
205 typedef tree::LeafNode<bool, LeafNodeType::LOG2DIM> BoolLeafNodeType;
206
207 MaskInteriorVoxels(
208 ValueType isovalue, const LeafNodeType ** nodes, BoolLeafNodeType ** maskNodes)
209 : mNodes(nodes), mMaskNodes(maskNodes), mIsovalue(isovalue)
210 {
211 }
212
213 void operator()(const tbb::blocked_range<size_t>& range) const {
214
215 BoolLeafNodeType * maskNodePt = NULL;
216
217 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
218
219 mMaskNodes[n] = NULL;
220 const LeafNodeType& node = *mNodes[n];
221
222 if (!maskNodePt) {
223 maskNodePt = new BoolLeafNodeType(node.origin(), false);
224 } else {
225 maskNodePt->setOrigin(node.origin());
226 }
227
228 const ValueType* values = &node.getValue(0);
229 for (Index i = 0; i < LeafNodeType::SIZE; ++i) {
230 if (values[i] < mIsovalue) maskNodePt->setValueOn(i, true);
231 }
232
233 if (maskNodePt->onVoxelCount() > 0) {
234 mMaskNodes[n] = maskNodePt;
235 maskNodePt = NULL;
236 }
237 }
238
239 if (maskNodePt) delete maskNodePt;
240 }
241
242 LeafNodeType const * const * const mNodes;
243 BoolLeafNodeType ** const mMaskNodes;
244 ValueType const mIsovalue;
245 }; // MaskInteriorVoxels
246
247
248 template<typename TreeType, typename InternalNodeType>
249 struct MaskInteriorTiles {
250
251 typedef typename TreeType::ValueType ValueType;
252
253 MaskInteriorTiles(ValueType isovalue, const TreeType& tree, InternalNodeType ** maskNodes)
254 : mTree(&tree), mMaskNodes(maskNodes), mIsovalue(isovalue) { }
255
256 void operator()(const tbb::blocked_range<size_t>& range) const {
257 tree::ValueAccessor<const TreeType> acc(*mTree);
258 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
259 typename InternalNodeType::ValueAllIter it = mMaskNodes[n]->beginValueAll();
260 for (; it; ++it) {
261 if (acc.getValue(it.getCoord()) < mIsovalue) {
262 it.setValue(true);
263 it.setValueOn(true);
264 }
265 }
266 }
267 }
268
269 TreeType const * const mTree;
270 InternalNodeType ** const mMaskNodes;
271 ValueType const mIsovalue;
272 }; // MaskInteriorTiles
273
274
275 template<typename TreeType>
276 struct PopulateTree {
277
278 typedef typename TreeType::ValueType ValueType;
279 typedef typename TreeType::LeafNodeType LeafNodeType;
280
281 PopulateTree(TreeType& tree, LeafNodeType** leafnodes,
282 const size_t * nodexIndexMap, ValueType background)
283 : mNewTree(background)
284 , mTreePt(&tree)
285 , mNodes(leafnodes)
286 , mNodeIndexMap(nodexIndexMap)
287 {
288 }
289
290 PopulateTree(PopulateTree& rhs, tbb::split)
291 : mNewTree(rhs.mNewTree.background())
292 , mTreePt(&mNewTree)
293 , mNodes(rhs.mNodes)
294 , mNodeIndexMap(rhs.mNodeIndexMap)
295 {
296 }
297
298 void operator()(const tbb::blocked_range<size_t>& range) {
299
300 tree::ValueAccessor<TreeType> acc(*mTreePt);
301
302 if (mNodeIndexMap) {
303 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
304 for (size_t i = mNodeIndexMap[n], I = mNodeIndexMap[n + 1]; i < I; ++i) {
305 if (mNodes[i] != NULL) acc.addLeaf(mNodes[i]);
306 }
307 }
308 } else {
309 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
310 acc.addLeaf(mNodes[n]);
311 }
312 }
313 }
314
315 void join(PopulateTree& rhs) { mTreePt->merge(*rhs.mTreePt); }
316
317 private:
318 TreeType mNewTree;
319 TreeType * const mTreePt;
320 LeafNodeType ** const mNodes;
321 size_t const * const mNodeIndexMap;
322 }; // PopulateTree
323
324
326 template<typename LeafNodeType>
327 struct LabelBoundaryVoxels {
328
329 typedef typename LeafNodeType::ValueType ValueType;
330 typedef tree::LeafNode<char, LeafNodeType::LOG2DIM> CharLeafNodeType;
331
332 LabelBoundaryVoxels(
333 ValueType isovalue, const LeafNodeType ** nodes, CharLeafNodeType ** maskNodes)
334 : mNodes(nodes), mMaskNodes(maskNodes), mIsovalue(isovalue)
335 {
336 }
337
338 void operator()(const tbb::blocked_range<size_t>& range) const {
339
340 CharLeafNodeType * maskNodePt = NULL;
341
342 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
343
344 mMaskNodes[n] = NULL;
345 const LeafNodeType& node = *mNodes[n];
346
347 if (!maskNodePt) {
348 maskNodePt = new CharLeafNodeType(node.origin(), 1);
349 } else {
350 maskNodePt->setOrigin(node.origin());
351 }
352
353 typename LeafNodeType::ValueOnCIter it;
354 for (it = node.cbeginValueOn(); it; ++it) {
355 maskNodePt->setValueOn(it.pos(), ((*it - mIsovalue) < 0.0) ? 0 : 1);
356 }
357
358 if (maskNodePt->onVoxelCount() > 0) {
359 mMaskNodes[n] = maskNodePt;
360 maskNodePt = NULL;
361 }
362 }
363
364 if (maskNodePt) delete maskNodePt;
365 }
366
367 LeafNodeType const * const * const mNodes;
368 CharLeafNodeType ** const mMaskNodes;
369 ValueType const mIsovalue;
370 }; // LabelBoundaryVoxels
371
372
373 template<typename LeafNodeType>
374 struct FlipRegionSign {
375 typedef typename LeafNodeType::ValueType ValueType;
376
377 FlipRegionSign(LeafNodeType ** nodes) : mNodes(nodes) { }
378
379 void operator()(const tbb::blocked_range<size_t>& range) const {
380 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
381 ValueType* values = const_cast<ValueType*>(&mNodes[n]->getValue(0));
382 for (Index i = 0; i < LeafNodeType::SIZE; ++i) {
383 values[i] = values[i] < 0 ? 1 : -1;
384 }
385 }
386 }
387
388 LeafNodeType ** const mNodes;
389 }; // FlipRegionSign
390
391
392 template<typename LeafNodeType>
393 struct FindMinVoxelValue {
394
395 typedef typename LeafNodeType::ValueType ValueType;
396
397 FindMinVoxelValue(LeafNodeType const * const * const leafnodes)
398 : minValue(std::numeric_limits<ValueType>::max())
399 , mNodes(leafnodes)
400 {
401 }
402
403 FindMinVoxelValue(FindMinVoxelValue& rhs, tbb::split)
404 : minValue(std::numeric_limits<ValueType>::max())
405 , mNodes(rhs.mNodes)
406 {
407 }
408
409 void operator()(const tbb::blocked_range<size_t>& range) {
410 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
411 const ValueType* data = mNodes[n]->buffer().data();
412 for (Index i = 0; i < LeafNodeType::SIZE; ++i) {
413 minValue = std::min(minValue, data[i]);
414 }
415 }
416 }
417
418 void join(FindMinVoxelValue& rhs) { minValue = std::min(minValue, rhs.minValue); }
419
420 ValueType minValue;
421
422 LeafNodeType const * const * const mNodes;
423 }; // FindMinVoxelValue
424
425
426 template<typename InternalNodeType>
427 struct FindMinTileValue {
428
429 typedef typename InternalNodeType::ValueType ValueType;
430
431 FindMinTileValue(InternalNodeType const * const * const nodes)
432 : minValue(std::numeric_limits<ValueType>::max())
433 , mNodes(nodes)
434 {
435 }
436
437 FindMinTileValue(FindMinTileValue& rhs, tbb::split)
438 : minValue(std::numeric_limits<ValueType>::max())
439 , mNodes(rhs.mNodes)
440 {
441 }
442
443 void operator()(const tbb::blocked_range<size_t>& range) {
444 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
445 typename InternalNodeType::ValueAllCIter it = mNodes[n]->beginValueAll();
446 for (; it; ++it) {
447 minValue = std::min(minValue, *it);
448 }
449 }
450 }
451
452 void join(FindMinTileValue& rhs) { minValue = std::min(minValue, rhs.minValue); }
453
454 ValueType minValue;
455
456 InternalNodeType const * const * const mNodes;
457 }; // FindMinTileValue
458
459
460 template<typename LeafNodeType>
461 struct SDFVoxelsToFogVolume {
462
463 typedef typename LeafNodeType::ValueType ValueType;
464
465 SDFVoxelsToFogVolume(LeafNodeType ** nodes, ValueType cutoffDistance)
466 : mNodes(nodes), mWeight(ValueType(1.0) / cutoffDistance)
467 {
468 }
469
470 void operator()(const tbb::blocked_range<size_t>& range) const {
471
472 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
473
474 LeafNodeType& node = *mNodes[n];
475 node.setValuesOff();
476
477 ValueType* values = node.buffer().data();
478 for (Index i = 0; i < LeafNodeType::SIZE; ++i) {
479 values[i] = values[i] > ValueType(0.0) ? ValueType(0.0) : values[i] * mWeight;
480 if (values[i] > ValueType(0.0)) node.setValueOn(i);
481 }
482
483 if (node.onVoxelCount() == 0) {
484 delete mNodes[n];
485 mNodes[n] = NULL;
486 }
487 }
488 }
489
490 LeafNodeType ** const mNodes;
491 ValueType const mWeight;
492 }; // SDFVoxelsToFogVolume
493
494
495 template<typename TreeType, typename InternalNodeType>
496 struct SDFTilesToFogVolume {
497
498 SDFTilesToFogVolume(const TreeType& tree, InternalNodeType ** nodes)
499 : mTree(&tree), mNodes(nodes) { }
500
501 void operator()(const tbb::blocked_range<size_t>& range) const {
502
503 typedef typename TreeType::ValueType ValueType;
504 tree::ValueAccessor<const TreeType> acc(*mTree);
505
506 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
507 typename InternalNodeType::ValueAllIter it = mNodes[n]->beginValueAll();
508 for (; it; ++it) {
509 if (acc.getValue(it.getCoord()) < ValueType(0.0)) {
510 it.setValue(ValueType(1.0));
511 it.setValueOn(true);
512 }
513 }
514 }
515 }
516
517 TreeType const * const mTree;
518 InternalNodeType ** const mNodes;
519 }; // SDFTilesToFogVolume
520
521
522 template<typename TreeType>
523 struct FillMaskBoundary {
524
525 typedef typename TreeType::ValueType ValueType;
526 typedef typename TreeType::LeafNodeType LeafNodeType;
527 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
528 typedef typename BoolTreeType::LeafNodeType BoolLeafNodeType;
529
530 FillMaskBoundary(const TreeType& tree, ValueType isovalue, const BoolTreeType& fillMask,
531 const BoolLeafNodeType ** fillNodes, BoolLeafNodeType ** newNodes)
532 : mTree(&tree), mFillMask(&fillMask), mFillNodes(fillNodes), mNewNodes(newNodes), mIsovalue(isovalue)
533 {
534 }
535
536 void operator()(const tbb::blocked_range<size_t>& range) const {
537
538 tree::ValueAccessor<const BoolTreeType> maskAcc(*mFillMask);
539 tree::ValueAccessor<const TreeType> distAcc(*mTree);
540
541 boost::scoped_array<char> valueMask(new char[BoolLeafNodeType::SIZE]);
542
543 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
544
545 mNewNodes[n] = NULL;
546 const BoolLeafNodeType& node = *mFillNodes[n];
547 const Coord& origin = node.origin();
548
549 const bool denseNode = node.isDense();
550
551 // possible early out if the fill mask is dense
552 if (denseNode) {
553
554 int denseNeighbors = 0;
555
556 const BoolLeafNodeType* neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(-1, 0, 0));
557 if (neighborNode && neighborNode->isDense()) ++denseNeighbors;
558
559 neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(BoolLeafNodeType::DIM, 0, 0));
560 if (neighborNode && neighborNode->isDense()) ++denseNeighbors;
561
562 neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(0, -1, 0));
563 if (neighborNode && neighborNode->isDense()) ++denseNeighbors;
564
565 neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(0, BoolLeafNodeType::DIM, 0));
566 if (neighborNode && neighborNode->isDense()) ++denseNeighbors;
567
568 neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(0, 0, -1));
569 if (neighborNode && neighborNode->isDense()) ++denseNeighbors;
570
571 neighborNode = maskAcc.probeConstLeaf(origin.offsetBy(0, 0, BoolLeafNodeType::DIM));
572 if (neighborNode && neighborNode->isDense()) ++denseNeighbors;
573
574 if (denseNeighbors == 6) continue;
575 }
576
577 // rest value mask
578 memset(valueMask.get(), 0, sizeof(char) * BoolLeafNodeType::SIZE);
579
580 const typename TreeType::LeafNodeType* distNode = distAcc.probeConstLeaf(origin);
581
582 // check internal voxel neighbors
583
584 bool earlyTermination = false;
585
586 if (!denseNode) {
587 if (distNode) {
588 evalInternalNeighborsP(valueMask.get(), node, *distNode);
589 evalInternalNeighborsN(valueMask.get(), node, *distNode);
590 } else if (distAcc.getValue(origin) > mIsovalue) {
591 earlyTermination = evalInternalNeighborsP(valueMask.get(), node);
592 if (!earlyTermination) earlyTermination = evalInternalNeighborsN(valueMask.get(), node);
593 }
594 }
595
596 // check external voxel neighbors
597
598 if (!earlyTermination) {
599 evalExternalNeighborsX<true>(valueMask.get(), node, maskAcc, distAcc);
600 evalExternalNeighborsX<false>(valueMask.get(), node, maskAcc, distAcc);
601 evalExternalNeighborsY<true>(valueMask.get(), node, maskAcc, distAcc);
602 evalExternalNeighborsY<false>(valueMask.get(), node, maskAcc, distAcc);
603 evalExternalNeighborsZ<true>(valueMask.get(), node, maskAcc, distAcc);
604 evalExternalNeighborsZ<false>(valueMask.get(), node, maskAcc, distAcc);
605 }
606
607 // Export marked boundary voxels.
608
609 int numBoundaryValues = 0;
610 for (Index i = 0, I = BoolLeafNodeType::SIZE; i < I; ++i) {
611 numBoundaryValues += valueMask[i] == 1;
612 }
613
614 if (numBoundaryValues > 0) {
615 mNewNodes[n] = new BoolLeafNodeType(origin, false);
616 for (Index i = 0, I = BoolLeafNodeType::SIZE; i < I; ++i) {
617 if (valueMask[i] == 1) mNewNodes[n]->setValueOn(i);
618 }
619 }
620 }
621 }
622
623 private:
624
625 // Check internal voxel neighbors in positive {x, y, z} directions.
626
627 void evalInternalNeighborsP(char* valueMask, const BoolLeafNodeType& node, const LeafNodeType& distNode) const {
628
629 for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) {
630 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
631 for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) {
632 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
633 for (Index z = 0; z < BoolLeafNodeType::DIM - 1; ++z) {
634 const Index pos = yPos + z;
635
636 if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue;
637
638 if (!node.isValueOn(pos + 1) && distNode.getValue(pos + 1) > mIsovalue) {
639 valueMask[pos] = 1;
640 }
641 }
642 }
643 }
644
645 for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) {
646 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
647 for (Index y = 0; y < BoolLeafNodeType::DIM - 1; ++y) {
648 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
649 for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) {
650 const Index pos = yPos + z;
651
652 if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue;
653
654 if (!node.isValueOn(pos + BoolLeafNodeType::DIM) &&
655 distNode.getValue(pos + BoolLeafNodeType::DIM) > mIsovalue) {
656 valueMask[pos] = 1;
657 }
658 }
659 }
660 }
661
662 for (Index x = 0; x < BoolLeafNodeType::DIM - 1; ++x) {
663 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
664 for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) {
665 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
666 for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) {
667 const Index pos = yPos + z;
668
669 if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue;
670
671 if (!node.isValueOn(pos + BoolLeafNodeType::DIM * BoolLeafNodeType::DIM) &&
672 distNode.getValue(pos + BoolLeafNodeType::DIM * BoolLeafNodeType::DIM) > mIsovalue) {
673 valueMask[pos] = 1;
674 }
675 }
676 }
677 }
678 }
679
680 bool evalInternalNeighborsP(char* valueMask, const BoolLeafNodeType& node) const {
681
682 for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) {
683 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
684 for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) {
685 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
686 for (Index z = 0; z < BoolLeafNodeType::DIM - 1; ++z) {
687 const Index pos = yPos + z;
688
689 if (node.isValueOn(pos) && !node.isValueOn(pos + 1)) {
690 valueMask[pos] = 1;
691 return true;
692 }
693 }
694 }
695 }
696
697 for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) {
698 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
699 for (Index y = 0; y < BoolLeafNodeType::DIM - 1; ++y) {
700 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
701 for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) {
702 const Index pos = yPos + z;
703
704 if (node.isValueOn(pos) && !node.isValueOn(pos + BoolLeafNodeType::DIM)) {
705 valueMask[pos] = 1;
706 return true;
707 }
708 }
709 }
710 }
711
712 for (Index x = 0; x < BoolLeafNodeType::DIM - 1; ++x) {
713 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
714 for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) {
715 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
716 for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) {
717 const Index pos = yPos + z;
718
719 if (node.isValueOn(pos) &&
720 !node.isValueOn(pos + BoolLeafNodeType::DIM * BoolLeafNodeType::DIM)) {
721 valueMask[pos] = 1;
722 return true;
723 }
724 }
725 }
726 }
727
728 return false;
729 }
730
731 // Check internal voxel neighbors in negative {x, y, z} directions.
732
733 void evalInternalNeighborsN(char* valueMask, const BoolLeafNodeType& node, const LeafNodeType& distNode) const {
734
735 for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) {
736 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
737 for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) {
738 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
739 for (Index z = 1; z < BoolLeafNodeType::DIM; ++z) {
740 const Index pos = yPos + z;
741
742 if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue;
743
744 if (!node.isValueOn(pos - 1) && distNode.getValue(pos - 1) > mIsovalue) {
745 valueMask[pos] = 1;
746 }
747 }
748 }
749 }
750
751 for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) {
752 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
753 for (Index y = 1; y < BoolLeafNodeType::DIM; ++y) {
754 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
755 for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) {
756 const Index pos = yPos + z;
757
758 if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue;
759
760 if (!node.isValueOn(pos - BoolLeafNodeType::DIM) &&
761 distNode.getValue(pos - BoolLeafNodeType::DIM) > mIsovalue) {
762 valueMask[pos] = 1;
763 }
764 }
765 }
766 }
767
768 for (Index x = 1; x < BoolLeafNodeType::DIM; ++x) {
769 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
770 for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) {
771 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
772 for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) {
773 const Index pos = yPos + z;
774
775 if (valueMask[pos] != 0 || !node.isValueOn(pos)) continue;
776
777 if (!node.isValueOn(pos - BoolLeafNodeType::DIM * BoolLeafNodeType::DIM) &&
778 distNode.getValue(pos - BoolLeafNodeType::DIM * BoolLeafNodeType::DIM) > mIsovalue) {
779 valueMask[pos] = 1;
780 }
781 }
782 }
783 }
784 }
785
786
787 bool evalInternalNeighborsN(char* valueMask, const BoolLeafNodeType& node) const {
788
789 for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) {
790 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
791 for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) {
792 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
793 for (Index z = 1; z < BoolLeafNodeType::DIM; ++z) {
794 const Index pos = yPos + z;
795
796 if (node.isValueOn(pos) && !node.isValueOn(pos - 1)) {
797 valueMask[pos] = 1;
798 return true;
799 }
800 }
801 }
802 }
803
804 for (Index x = 0; x < BoolLeafNodeType::DIM; ++x) {
805 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
806 for (Index y = 1; y < BoolLeafNodeType::DIM; ++y) {
807 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
808 for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) {
809 const Index pos = yPos + z;
810
811 if (node.isValueOn(pos) && !node.isValueOn(pos - BoolLeafNodeType::DIM)) {
812 valueMask[pos] = 1;
813 return true;
814 }
815 }
816 }
817 }
818
819 for (Index x = 1; x < BoolLeafNodeType::DIM; ++x) {
820 const Index xPos = x << (2 * BoolLeafNodeType::LOG2DIM);
821 for (Index y = 0; y < BoolLeafNodeType::DIM; ++y) {
822 const Index yPos = xPos + (y << BoolLeafNodeType::LOG2DIM);
823 for (Index z = 0; z < BoolLeafNodeType::DIM; ++z) {
824 const Index pos = yPos + z;
825
826 if (node.isValueOn(pos) &&
827 !node.isValueOn(pos - BoolLeafNodeType::DIM * BoolLeafNodeType::DIM)) {
828 valueMask[pos] = 1;
829 return true;
830 }
831 }
832 }
833 }
834
835 return false;
836 }
837
838
839 // Check external voxel neighbors
840
841 // If UpWind is true check the X+ oriented node face, else the X- oriented face.
842 template<bool UpWind>
843 void evalExternalNeighborsX(char* valueMask, const BoolLeafNodeType& node,
844 const tree::ValueAccessor<const BoolTreeType>& maskAcc,
845 const tree::ValueAccessor<const TreeType>& distAcc) const {
846
847 const Coord& origin = node.origin();
848 Coord ijk(0, 0, 0), nijk;
849 int step = -1;
850
851 if (UpWind) {
852 step = 1;
853 ijk[0] = int(BoolLeafNodeType::DIM) - 1;
854 }
855
856 const Index xPos = ijk[0] << (2 * int(BoolLeafNodeType::LOG2DIM));
857
858 for (ijk[1] = 0; ijk[1] < int(BoolLeafNodeType::DIM); ++ijk[1]) {
859 const Index yPos = xPos + (ijk[1] << int(BoolLeafNodeType::LOG2DIM));
860
861 for (ijk[2] = 0; ijk[2] < int(BoolLeafNodeType::DIM); ++ijk[2]) {
862 const Index pos = yPos + ijk[2];
863
864 if (valueMask[pos] == 0 && node.isValueOn(pos)) {
865
866 nijk = origin + ijk.offsetBy(step, 0, 0);
867
868 if (!maskAcc.isValueOn(nijk) && distAcc.getValue(nijk) > mIsovalue) {
869 valueMask[pos] = 1;
870 }
871 }
872 }
873 }
874 }
875
876 // If UpWind is true check the Y+ oriented node face, else the Y- oriented face.
877 template<bool UpWind>
878 void evalExternalNeighborsY(char* valueMask, const BoolLeafNodeType& node,
879 const tree::ValueAccessor<const BoolTreeType>& maskAcc,
880 const tree::ValueAccessor<const TreeType>& distAcc) const {
881
882 const Coord& origin = node.origin();
883 Coord ijk(0, 0, 0), nijk;
884 int step = -1;
885
886 if (UpWind) {
887 step = 1;
888 ijk[1] = int(BoolLeafNodeType::DIM) - 1;
889 }
890
891 const Index yPos = ijk[1] << int(BoolLeafNodeType::LOG2DIM);
892
893 for (ijk[0] = 0; ijk[0] < int(BoolLeafNodeType::DIM); ++ijk[0]) {
894 const Index xPos = yPos + (ijk[0] << (2 * int(BoolLeafNodeType::LOG2DIM)));
895
896 for (ijk[2] = 0; ijk[2] < int(BoolLeafNodeType::DIM); ++ijk[2]) {
897 const Index pos = xPos + ijk[2];
898
899 if (valueMask[pos] == 0 && node.isValueOn(pos)) {
900
901 nijk = origin + ijk.offsetBy(0, step, 0);
902 if (!maskAcc.isValueOn(nijk) && distAcc.getValue(nijk) > mIsovalue) {
903 valueMask[pos] = 1;
904 }
905 }
906 }
907 }
908 }
909
910 // If UpWind is true check the Z+ oriented node face, else the Z- oriented face.
911 template<bool UpWind>
912 void evalExternalNeighborsZ(char* valueMask, const BoolLeafNodeType& node,
913 const tree::ValueAccessor<const BoolTreeType>& maskAcc,
914 const tree::ValueAccessor<const TreeType>& distAcc) const {
915
916 const Coord& origin = node.origin();
917 Coord ijk(0, 0, 0), nijk;
918 int step = -1;
919
920 if (UpWind) {
921 step = 1;
922 ijk[2] = int(BoolLeafNodeType::DIM) - 1;
923 }
924
925 for (ijk[0] = 0; ijk[0] < int(BoolLeafNodeType::DIM); ++ijk[0]) {
926 const Index xPos = ijk[0] << (2 * int(BoolLeafNodeType::LOG2DIM));
927
928 for (ijk[1] = 0; ijk[1] < int(BoolLeafNodeType::DIM); ++ijk[1]) {
929 const Index pos = ijk[2] + xPos + (ijk[1] << int(BoolLeafNodeType::LOG2DIM));
930
931 if (valueMask[pos] == 0 && node.isValueOn(pos)) {
932
933 nijk = origin + ijk.offsetBy(0, 0, step);
934 if (!maskAcc.isValueOn(nijk) && distAcc.getValue(nijk) > mIsovalue) {
935 valueMask[pos] = 1;
936 }
937 }
938 }
939 }
940 }
941
943
944 TreeType const * const mTree;
945 BoolTreeType const * const mFillMask;
946 BoolLeafNodeType const * const * const mFillNodes;
947 BoolLeafNodeType ** const mNewNodes;
948 ValueType const mIsovalue;
949 }; // FillMaskBoundary
950
951
954 template <class TreeType>
955 inline typename TreeType::template ValueConverter<char>::Type::Ptr
956 computeEnclosedRegionMask(const TreeType& tree, typename TreeType::ValueType isovalue,
957 const typename TreeType::template ValueConverter<bool>::Type* fillMask)
958 {
959 typedef typename TreeType::LeafNodeType LeafNodeType;
960 typedef typename TreeType::RootNodeType RootNodeType;
961 typedef typename RootNodeType::NodeChainType NodeChainType;
962 typedef typename boost::mpl::at<NodeChainType, boost::mpl::int_<1> >::type InternalNodeType;
963
964 typedef typename TreeType::template ValueConverter<char>::Type CharTreeType;
965 typedef typename CharTreeType::LeafNodeType CharLeafNodeType;
966 typedef typename CharTreeType::RootNodeType CharRootNodeType;
967 typedef typename CharRootNodeType::NodeChainType CharNodeChainType;
968
969 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
970 typedef typename BoolTreeType::LeafNodeType BoolLeafNodeType;
971
973
974 const TreeType* treePt = &tree;
975
976 size_t numLeafNodes = 0, numInternalNodes = 0;
977
978 std::vector<const LeafNodeType*> nodes;
979 std::vector<size_t> leafnodeCount;
980
981 {
982 // compute the prefix sum of the leafnode count in each internal node.
983 std::vector<const InternalNodeType*> internalNodes;
984 treePt->getNodes(internalNodes);
985
986 numInternalNodes = internalNodes.size();
987
988 leafnodeCount.push_back(0);
989 for (size_t n = 0; n < numInternalNodes; ++n) {
990 leafnodeCount.push_back(leafnodeCount.back() + internalNodes[n]->leafCount());
991 }
992
993 numLeafNodes = leafnodeCount.back();
994
995 // extract all leafnodes
996 nodes.reserve(numLeafNodes);
997
998 for (size_t n = 0; n < numInternalNodes; ++n) {
999 internalNodes[n]->getNodes(nodes);
1000 }
1001 }
1002
1003 // create mask leafnodes
1004 boost::scoped_array<CharLeafNodeType*> maskNodes(new CharLeafNodeType*[numLeafNodes]);
1005
1006 tbb::parallel_for(tbb::blocked_range<size_t>(0, numLeafNodes),
1007 LabelBoundaryVoxels<LeafNodeType>(isovalue, &nodes[0], maskNodes.get()));
1008
1009 // create mask grid
1010 typename CharTreeType::Ptr maskTree(new CharTreeType(1));
1011
1012 PopulateTree<CharTreeType> populate(*maskTree, maskNodes.get(), &leafnodeCount[0], 1);
1013 tbb::parallel_reduce(tbb::blocked_range<size_t>(0, numInternalNodes), populate);
1014
1015 // optionally evaluate the fill mask
1016
1017 std::vector<CharLeafNodeType*> extraMaskNodes;
1018
1019 if (fillMask) {
1020
1021 std::vector<const BoolLeafNodeType*> fillMaskNodes;
1022 fillMask->getNodes(fillMaskNodes);
1023
1024 boost::scoped_array<BoolLeafNodeType*> boundaryMaskNodes(new BoolLeafNodeType*[fillMaskNodes.size()]);
1025
1026 tbb::parallel_for(tbb::blocked_range<size_t>(0, fillMaskNodes.size()),
1027 FillMaskBoundary<TreeType>(tree, isovalue, *fillMask, &fillMaskNodes[0], boundaryMaskNodes.get()));
1028
1029 tree::ValueAccessor<CharTreeType> maskAcc(*maskTree);
1030
1031 for (size_t n = 0, N = fillMaskNodes.size(); n < N; ++n) {
1032
1033 if (boundaryMaskNodes[n] == NULL) continue;
1034
1035 const BoolLeafNodeType& boundaryNode = *boundaryMaskNodes[n];
1036 const Coord& origin = boundaryNode.origin();
1037
1038 CharLeafNodeType* maskNodePt = maskAcc.probeLeaf(origin);
1039
1040 if (!maskNodePt) {
1041 maskNodePt = maskAcc.touchLeaf(origin);
1042 extraMaskNodes.push_back(maskNodePt);
1043 }
1044
1045 char* data = maskNodePt->buffer().data();
1046
1047 typename BoolLeafNodeType::ValueOnCIter it = boundaryNode.cbeginValueOn();
1048 for (; it; ++it) {
1049 if (data[it.pos()] != 0) data[it.pos()] = -1;
1050 }
1051
1052 delete boundaryMaskNodes[n];
1053 }
1054 }
1055
1056 // eliminate enclosed regions
1057 tools::traceExteriorBoundaries(*maskTree);
1058
1059 // flip voxel sign to negative inside and positive outside.
1060 tbb::parallel_for(tbb::blocked_range<size_t>(0, numLeafNodes),
1061 FlipRegionSign<CharLeafNodeType>(maskNodes.get()));
1062
1063 if (!extraMaskNodes.empty()) {
1064 tbb::parallel_for(tbb::blocked_range<size_t>(0, extraMaskNodes.size()),
1065 FlipRegionSign<CharLeafNodeType>(&extraMaskNodes[0]));
1066 }
1067
1068 // propagate sign information into tile region
1069 tools::signedFloodFill(*maskTree);
1070
1071 return maskTree;
1072 } // computeEnclosedRegionMask()
1073
1074
1075 template <class TreeType>
1076 inline typename TreeType::template ValueConverter<bool>::Type::Ptr
1077 computeInteriorMask(const TreeType& tree, typename TreeType::ValueType iso)
1078 {
1079 typedef typename TreeType::LeafNodeType LeafNodeType;
1080 typedef typename TreeType::RootNodeType RootNodeType;
1081 typedef typename RootNodeType::NodeChainType NodeChainType;
1082 typedef typename boost::mpl::at<NodeChainType, boost::mpl::int_<1> >::type InternalNodeType;
1083
1084 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
1085 typedef typename BoolTreeType::LeafNodeType BoolLeafNodeType;
1086 typedef typename BoolTreeType::RootNodeType BoolRootNodeType;
1087 typedef typename BoolRootNodeType::NodeChainType BoolNodeChainType;
1088 typedef typename boost::mpl::at<BoolNodeChainType, boost::mpl::int_<1> >::type BoolInternalNodeType;
1089
1091 size_t numLeafNodes = 0, numInternalNodes = 0;
1092
1093 std::vector<const LeafNodeType*> nodes;
1094 std::vector<size_t> leafnodeCount;
1095
1096 {
1097 // compute the prefix sum of the leafnode count in each internal node.
1098 std::vector<const InternalNodeType*> internalNodes;
1099 tree.getNodes(internalNodes);
1100
1101 numInternalNodes = internalNodes.size();
1102
1103 leafnodeCount.push_back(0);
1104 for (size_t n = 0; n < numInternalNodes; ++n) {
1105 leafnodeCount.push_back(leafnodeCount.back() + internalNodes[n]->leafCount());
1106 }
1107
1108 numLeafNodes = leafnodeCount.back();
1109
1110 // extract all leafnodes
1111 nodes.reserve(numLeafNodes);
1112
1113 for (size_t n = 0; n < numInternalNodes; ++n) {
1114 internalNodes[n]->getNodes(nodes);
1115 }
1116 }
1117
1118 // create mask leafnodes
1119 boost::scoped_array<BoolLeafNodeType*> maskNodes(new BoolLeafNodeType*[numLeafNodes]);
1120
1121 tbb::parallel_for(tbb::blocked_range<size_t>(0, numLeafNodes),
1122 MaskInteriorVoxels<LeafNodeType>(iso, &nodes[0], maskNodes.get()));
1123
1124
1125 // create mask grid
1126 typename BoolTreeType::Ptr maskTree(new BoolTreeType(false));
1127
1128 PopulateTree<BoolTreeType> populate(*maskTree, maskNodes.get(), &leafnodeCount[0], false);
1129 tbb::parallel_reduce(tbb::blocked_range<size_t>(0, numInternalNodes), populate);
1130
1131
1132 // evaluate tile values
1133 std::vector<BoolInternalNodeType*> internalMaskNodes;
1134 maskTree->getNodes(internalMaskNodes);
1135
1136 tbb::parallel_for(tbb::blocked_range<size_t>(0, internalMaskNodes.size()),
1137 MaskInteriorTiles<TreeType, BoolInternalNodeType>(iso, tree, &internalMaskNodes[0]));
1138
1139 tree::ValueAccessor<const TreeType> acc(tree);
1140
1141 typename BoolTreeType::ValueAllIter it(*maskTree);
1142 it.setMaxDepth(BoolTreeType::ValueAllIter::LEAF_DEPTH - 2);
1143
1144 for ( ; it; ++it) {
1145 if (acc.getValue(it.getCoord()) < iso) {
1146 it.setValue(true);
1147 it.setActiveState(true);
1148 }
1149 }
1150
1151 return maskTree;
1152 } // computeInteriorMask()
1153
1154
1155 template<typename InputTreeType>
1156 struct MaskIsovalueCrossingVoxels
1157 {
1158 typedef typename InputTreeType::ValueType InputValueType;
1159 typedef typename InputTreeType::LeafNodeType InputLeafNodeType;
1160 typedef typename InputTreeType::template ValueConverter<bool>::Type BoolTreeType;
1161 typedef typename BoolTreeType::LeafNodeType BoolLeafNodeType;
1162
1163 MaskIsovalueCrossingVoxels(
1164 const InputTreeType& inputTree,
1165 const std::vector<const InputLeafNodeType*>& inputLeafNodes,
1166 BoolTreeType& maskTree,
1167 InputValueType iso)
1168 : mInputAccessor(inputTree)
1169 , mInputNodes(!inputLeafNodes.empty() ? &inputLeafNodes.front() : NULL)
1170 , mMaskTree(false)
1171 , mMaskAccessor(maskTree)
1172 , mIsovalue(iso)
1173 {
1174 }
1175
1176 MaskIsovalueCrossingVoxels(MaskIsovalueCrossingVoxels& rhs, tbb::split)
1177 : mInputAccessor(rhs.mInputAccessor.tree())
1178 , mInputNodes(rhs.mInputNodes)
1179 , mMaskTree(false)
1180 , mMaskAccessor(mMaskTree)
1181 , mIsovalue(rhs.mIsovalue)
1182 {
1183 }
1184
1185 void operator()(const tbb::blocked_range<size_t>& range) {
1186
1187 const InputValueType iso = mIsovalue;
1188 Coord ijk(0, 0, 0);
1189
1190 BoolLeafNodeType* maskNodePt = NULL;
1191
1192 for (size_t n = range.begin(); mInputNodes && (n != range.end()); ++n) {
1193
1194 const InputLeafNodeType& node = *mInputNodes[n];
1195
1196 if (!maskNodePt) maskNodePt = new BoolLeafNodeType(node.origin(), false);
1197 else maskNodePt->setOrigin(node.origin());
1198
1199 bool collectedData = false;
1200
1201 for (typename InputLeafNodeType::ValueOnCIter it = node.cbeginValueOn(); it; ++it) {
1202
1203 bool isUnder = *it < iso;
1204
1205 ijk = it.getCoord();
1206
1207 ++ijk[2];
1208 bool signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // +z edge
1209 --ijk[2];
1210
1211 if (!signChange) {
1212 --ijk[2];
1213 signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // -z edge
1214 ++ijk[2];
1215 }
1216
1217 if (!signChange) {
1218 ++ijk[1];
1219 signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // +y edge
1220 --ijk[1];
1221 }
1222
1223 if (!signChange) {
1224 --ijk[1];
1225 signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // -y edge
1226 ++ijk[1];
1227 }
1228
1229 if (!signChange) {
1230 ++ijk[0];
1231 signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // +x edge
1232 --ijk[0];
1233 }
1234
1235 if (!signChange) {
1236 --ijk[0];
1237 signChange = isUnder != (mInputAccessor.getValue(ijk) < iso); // -x edge
1238 ++ijk[0];
1239 }
1240
1241 if (signChange) {
1242 collectedData = true;
1243 maskNodePt->setValueOn(it.pos(), true);
1244 }
1245 }
1246
1247 if (collectedData) {
1248 mMaskAccessor.addLeaf(maskNodePt);
1249 maskNodePt = NULL;
1250 }
1251 }
1252
1253 if (maskNodePt) delete maskNodePt;
1254 }
1255
1256 void join(MaskIsovalueCrossingVoxels& rhs) {
1257 mMaskAccessor.tree().merge(rhs.mMaskAccessor.tree());
1258 }
1259
1260 private:
1261 tree::ValueAccessor<const InputTreeType> mInputAccessor;
1262 InputLeafNodeType const * const * const mInputNodes;
1263
1264 BoolTreeType mMaskTree;
1265 tree::ValueAccessor<BoolTreeType> mMaskAccessor;
1266
1267 InputValueType mIsovalue;
1268 }; // MaskIsovalueCrossingVoxels
1269
1270
1272
1273
1274 template<typename NodeType>
1275 struct NodeMaskSegment
1276 {
1277 typedef boost::shared_ptr<NodeMaskSegment> Ptr;
1278 typedef typename NodeType::NodeMaskType NodeMaskType;
1279
1280 NodeMaskSegment() : connections(), mask(false), origin(0,0,0), visited(false) {}
1281
1282 std::vector<NodeMaskSegment*> connections;
1283 NodeMaskType mask;
1284 Coord origin;
1285 bool visited;
1286 }; // struct NodeMaskSegment
1287
1288
1289 template<typename NodeType>
1290 inline void
1291 nodeMaskSegmentation(const NodeType& node,
1292 std::vector<typename NodeMaskSegment<NodeType>::Ptr>& segments)
1293 {
1294 typedef typename NodeType::NodeMaskType NodeMaskType;
1295 typedef NodeMaskSegment<NodeType> NodeMaskSegmentType;
1296 typedef typename NodeMaskSegmentType::Ptr NodeMaskSegmentTypePtr;
1297
1298 NodeMaskType nodeMask(node.getValueMask());
1299 std::deque<Index> indexList;
1300
1301 while (!nodeMask.isOff()) {
1302
1303 NodeMaskSegmentTypePtr segment(new NodeMaskSegmentType());
1304 segment->origin = node.origin();
1305
1306 NodeMaskType& mask = segment->mask;
1307
1308 indexList.push_back(nodeMask.findFirstOn());
1309 nodeMask.setOff(indexList.back()); // mark as visited
1310 Coord ijk(0, 0, 0);
1311
1312 while (!indexList.empty()) {
1313
1314 const Index pos = indexList.back();
1315 indexList.pop_back();
1316
1317 if (mask.isOn(pos)) continue;
1318 mask.setOn(pos);
1319
1320 ijk = NodeType::offsetToLocalCoord(pos);
1321
1322 Index npos = pos - 1;
1323 if (ijk[2] != 0 && nodeMask.isOn(npos)) {
1324 nodeMask.setOff(npos);
1325 indexList.push_back(npos);
1326 }
1327
1328 npos = pos + 1;
1329 if (ijk[2] != (NodeType::DIM - 1) && nodeMask.isOn(npos)) {
1330 nodeMask.setOff(npos);
1331 indexList.push_back(npos);
1332 }
1333
1334 npos = pos - NodeType::DIM;
1335 if (ijk[1] != 0 && nodeMask.isOn(npos)) {
1336 nodeMask.setOff(npos);
1337 indexList.push_back(npos);
1338 }
1339
1340 npos = pos + NodeType::DIM;
1341 if (ijk[1] != (NodeType::DIM - 1) && nodeMask.isOn(npos)) {
1342 nodeMask.setOff(npos);
1343 indexList.push_back(npos);
1344 }
1345
1346 npos = pos - NodeType::DIM * NodeType::DIM;
1347 if (ijk[0] != 0 && nodeMask.isOn(npos)) {
1348 nodeMask.setOff(npos);
1349 indexList.push_back(npos);
1350 }
1351
1352 npos = pos + NodeType::DIM * NodeType::DIM;
1353 if (ijk[0] != (NodeType::DIM - 1) && nodeMask.isOn(npos)) {
1354 nodeMask.setOff(npos);
1355 indexList.push_back(npos);
1356 }
1357
1358 }
1359
1360 segments.push_back(segment);
1361 }
1362 }
1363
1364
1365 template<typename NodeType>
1366 struct SegmentNodeMask
1367 {
1368 typedef NodeMaskSegment<NodeType> NodeMaskSegmentType;
1369 typedef typename NodeMaskSegmentType::Ptr NodeMaskSegmentTypePtr;
1370 typedef typename std::vector<NodeMaskSegmentTypePtr> NodeMaskSegmentVector;
1371
1372 SegmentNodeMask(std::vector<NodeType*>& nodes, NodeMaskSegmentVector* nodeMaskArray)
1373 : mNodes(!nodes.empty() ? &nodes.front() : NULL)
1374 , mNodeMaskArray(nodeMaskArray)
1375 {
1376 }
1377
1378 void operator()(const tbb::blocked_range<size_t>& range) const {
1379 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
1380 NodeType& node = *mNodes[n];
1381 nodeMaskSegmentation(node, mNodeMaskArray[n]);
1382
1383 // hack origin data to store array offset
1384 Coord& origin = const_cast<Coord&>(node.origin());
1385 origin[0] = static_cast<int>(n);
1386 }
1387 }
1388
1389 NodeType * const * const mNodes;
1390 NodeMaskSegmentVector * const mNodeMaskArray;
1391 }; // struct SegmentNodeMask
1392
1393
1394 template<typename TreeType, typename NodeType>
1395 struct ConnectNodeMaskSegments
1396 {
1397 typedef typename NodeType::NodeMaskType NodeMaskType;
1398 typedef NodeMaskSegment<NodeType> NodeMaskSegmentType;
1399 typedef typename NodeMaskSegmentType::Ptr NodeMaskSegmentTypePtr;
1400 typedef typename std::vector<NodeMaskSegmentTypePtr> NodeMaskSegmentVector;
1401
1402 ConnectNodeMaskSegments(const TreeType& tree, NodeMaskSegmentVector* nodeMaskArray)
1403 : mTree(&tree)
1404 , mNodeMaskArray(nodeMaskArray)
1405 {
1406 }
1407
1408 void operator()(const tbb::blocked_range<size_t>& range) const {
1409
1410 tree::ValueAccessor<const TreeType> acc(*mTree);
1411
1412 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
1413
1414 NodeMaskSegmentVector& segments = mNodeMaskArray[n];
1415 if (segments.empty()) continue;
1416
1417 std::vector<std::set<NodeMaskSegmentType*> > connections(segments.size());
1418
1419 Coord ijk = segments[0]->origin;
1420
1421 const NodeType* node = acc.template probeConstNode<NodeType>(ijk);
1422 if (!node) continue;
1423
1424 // get neighbour nodes
1425
1426 ijk[2] += NodeType::DIM;
1427 const NodeType* nodeZUp = acc.template probeConstNode<NodeType>(ijk);
1428 ijk[2] -= (NodeType::DIM + NodeType::DIM);
1429 const NodeType* nodeZDown = acc.template probeConstNode<NodeType>(ijk);
1430 ijk[2] += NodeType::DIM;
1431
1432 ijk[1] += NodeType::DIM;
1433 const NodeType* nodeYUp = acc.template probeConstNode<NodeType>(ijk);
1434 ijk[1] -= (NodeType::DIM + NodeType::DIM);
1435 const NodeType* nodeYDown = acc.template probeConstNode<NodeType>(ijk);
1436 ijk[1] += NodeType::DIM;
1437
1438 ijk[0] += NodeType::DIM;
1439 const NodeType* nodeXUp = acc.template probeConstNode<NodeType>(ijk);
1440 ijk[0] -= (NodeType::DIM + NodeType::DIM);
1441 const NodeType* nodeXDown = acc.template probeConstNode<NodeType>(ijk);
1442 ijk[0] += NodeType::DIM;
1443
1444 const Index startPos = node->getValueMask().findFirstOn();
1445 for (Index pos = startPos; pos < NodeMaskType::SIZE; ++pos) {
1446
1447 if (!node->isValueOn(pos)) continue;
1448
1449 ijk = NodeType::offsetToLocalCoord(pos);
1450 Index npos = 0;
1451
1452 if (ijk[2] == 0) {
1453 npos = pos + (NodeType::DIM - 1);
1454 if (nodeZDown && nodeZDown->isValueOn(npos)) {
1455 NodeMaskSegmentType* nsegment =
1456 findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeZDown)], npos);
1457 const Index idx = findNodeMaskSegmentIndex(segments, pos);
1458 connections[idx].insert(nsegment);
1459 }
1460 } else if (ijk[2] == (NodeType::DIM - 1)) {
1461 npos = pos - (NodeType::DIM - 1);
1462 if (nodeZUp && nodeZUp->isValueOn(npos)) {
1463 NodeMaskSegmentType* nsegment =
1464 findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeZUp)], npos);
1465 const Index idx = findNodeMaskSegmentIndex(segments, pos);
1466 connections[idx].insert(nsegment);
1467 }
1468 }
1469
1470 if (ijk[1] == 0) {
1471 npos = pos + (NodeType::DIM - 1) * NodeType::DIM;
1472 if (nodeYDown && nodeYDown->isValueOn(npos)) {
1473 NodeMaskSegmentType* nsegment =
1474 findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeYDown)], npos);
1475 const Index idx = findNodeMaskSegmentIndex(segments, pos);
1476 connections[idx].insert(nsegment);
1477 }
1478 } else if (ijk[1] == (NodeType::DIM - 1)) {
1479 npos = pos - (NodeType::DIM - 1) * NodeType::DIM;
1480 if (nodeYUp && nodeYUp->isValueOn(npos)) {
1481 NodeMaskSegmentType* nsegment =
1482 findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeYUp)], npos);
1483 const Index idx = findNodeMaskSegmentIndex(segments, pos);
1484 connections[idx].insert(nsegment);
1485 }
1486 }
1487
1488 if (ijk[0] == 0) {
1489 npos = pos + (NodeType::DIM - 1) * NodeType::DIM * NodeType::DIM;
1490 if (nodeXDown && nodeXDown->isValueOn(npos)) {
1491 NodeMaskSegmentType* nsegment =
1492 findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeXDown)], npos);
1493 const Index idx = findNodeMaskSegmentIndex(segments, pos);
1494 connections[idx].insert(nsegment);
1495 }
1496 } else if (ijk[0] == (NodeType::DIM - 1)) {
1497 npos = pos - (NodeType::DIM - 1) * NodeType::DIM * NodeType::DIM;
1498 if (nodeXUp && nodeXUp->isValueOn(npos)) {
1499 NodeMaskSegmentType* nsegment =
1500 findNodeMaskSegment(mNodeMaskArray[getNodeOffset(*nodeXUp)], npos);
1501 const Index idx = findNodeMaskSegmentIndex(segments, pos);
1502 connections[idx].insert(nsegment);
1503 }
1504 }
1505 }
1506
1507 for (size_t i = 0, I = connections.size(); i < I; ++i) {
1508
1509 typename std::set<NodeMaskSegmentType*>::iterator
1510 it = connections[i].begin(), end = connections[i].end();
1511
1512 std::vector<NodeMaskSegmentType*>& segmentConnections = segments[i]->connections;
1513 segmentConnections.reserve(connections.size());
1514 for (; it != end; ++it) {
1515 segmentConnections.push_back(*it);
1516 }
1517 }
1518 } // end range loop
1519 }
1520
1521 private:
1522
1523 static inline size_t getNodeOffset(const NodeType& node) {
1524 return static_cast<size_t>(node.origin()[0]);
1525 }
1526
1527 static inline NodeMaskSegmentType*
1528 findNodeMaskSegment(NodeMaskSegmentVector& segments, Index pos)
1529 {
1530 NodeMaskSegmentType* segment = NULL;
1531
1532 for (size_t n = 0, N = segments.size(); n < N; ++n) {
1533 if (segments[n]->mask.isOn(pos)) {
1534 segment = segments[n].get();
1535 break;
1536 }
1537 }
1538
1539 return segment;
1540 }
1541
1542 static inline Index
1543 findNodeMaskSegmentIndex(NodeMaskSegmentVector& segments, Index pos)
1544 {
1545 for (Index n = 0, N = Index(segments.size()); n < N; ++n) {
1546 if (segments[n]->mask.isOn(pos)) return n;
1547 }
1548 return Index(-1);
1549 }
1550
1551 TreeType const * const mTree;
1552 NodeMaskSegmentVector * const mNodeMaskArray;
1553 }; // struct ConnectNodeMaskSegments
1554
1555
1556 template<typename TreeType>
1557 struct MaskSegmentGroup
1558 {
1559 typedef typename TreeType::LeafNodeType LeafNodeType;
1560 typedef typename TreeType::Ptr TreeTypePtr;
1561 typedef NodeMaskSegment<LeafNodeType> NodeMaskSegmentType;
1562
1563 MaskSegmentGroup(const std::vector<NodeMaskSegmentType*>& segments)
1564 : mSegments(!segments.empty() ? &segments.front() : NULL)
1565 , mTree(new TreeType(false))
1566 {
1567 }
1568
1569 MaskSegmentGroup(const MaskSegmentGroup& rhs, tbb::split)
1570 : mSegments(rhs.mSegments)
1571 , mTree(new TreeType(false))
1572 {
1573 }
1574
1575 TreeTypePtr& mask() { return mTree; }
1576
1577 void join(MaskSegmentGroup& rhs) { mTree->merge(*rhs.mTree); }
1578
1579 void operator()(const tbb::blocked_range<size_t>& range) {
1580
1581 tree::ValueAccessor<TreeType> acc(*mTree);
1582
1583 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
1584 NodeMaskSegmentType& segment = *mSegments[n];
1585 LeafNodeType* node = acc.touchLeaf(segment.origin);
1586 node->getValueMask() |= segment.mask;
1587 }
1588 }
1589
1590 private:
1591 NodeMaskSegmentType * const * const mSegments;
1592 TreeTypePtr mTree;
1593 }; // struct MaskSegmentGroup
1594
1595
1597
1598
1599 template<typename TreeType>
1600 struct ExpandLeafNodeRegion
1601 {
1602 typedef typename TreeType::ValueType ValueType;
1603 typedef typename TreeType::LeafNodeType LeafNodeType;
1604 typedef typename LeafNodeType::NodeMaskType NodeMaskType;
1605
1606 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
1607 typedef typename BoolTreeType::LeafNodeType BoolLeafNodeType;
1608
1610
1611 ExpandLeafNodeRegion(const TreeType& distTree, BoolTreeType& maskTree, std::vector<BoolLeafNodeType*>& maskNodes)
1612 : mDistTree(&distTree)
1613 , mMaskTree(&maskTree)
1614 , mMaskNodes(!maskNodes.empty() ? &maskNodes.front() : NULL)
1615 , mNewMaskTree(false)
1616 {
1617 }
1618
1619 ExpandLeafNodeRegion(const ExpandLeafNodeRegion& rhs, tbb::split)
1620 : mDistTree(rhs.mDistTree)
1621 , mMaskTree(rhs.mMaskTree)
1622 , mMaskNodes(rhs.mMaskNodes)
1623 , mNewMaskTree(false)
1624 {
1625 }
1626
1627 BoolTreeType& newMaskTree() { return mNewMaskTree; }
1628
1629 void join(ExpandLeafNodeRegion& rhs) { mNewMaskTree.merge(rhs.mNewMaskTree); }
1630
1631 void operator()(const tbb::blocked_range<size_t>& range) {
1632
1633 typedef LeafNodeType NodeType;
1634
1635 tree::ValueAccessor<const TreeType> distAcc(*mDistTree);
1636 tree::ValueAccessor<const BoolTreeType> maskAcc(*mMaskTree);
1637 tree::ValueAccessor<BoolTreeType> newMaskAcc(mNewMaskTree);
1638
1639 NodeMaskType maskZUp, maskZDown, maskYUp, maskYDown, maskXUp, maskXDown;
1640
1641 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
1642
1643 BoolLeafNodeType& maskNode = *mMaskNodes[n];
1644 if (maskNode.isEmpty()) continue;
1645
1646 Coord ijk = maskNode.origin(), nijk;
1647
1648 const LeafNodeType* distNode = distAcc.probeConstLeaf(ijk);
1649 if (!distNode) continue;
1650
1651 const ValueType *dataZUp = NULL, *dataZDown = NULL,
1652 *dataYUp = NULL, *dataYDown = NULL,
1653 *dataXUp = NULL, *dataXDown = NULL;
1654
1655 ijk[2] += NodeType::DIM;
1656 getData(ijk, distAcc, maskAcc, maskZUp, dataZUp);
1657 ijk[2] -= (NodeType::DIM + NodeType::DIM);
1658 getData(ijk, distAcc, maskAcc, maskZDown, dataZDown);
1659 ijk[2] += NodeType::DIM;
1660
1661 ijk[1] += NodeType::DIM;
1662 getData(ijk, distAcc, maskAcc, maskYUp, dataYUp);
1663 ijk[1] -= (NodeType::DIM + NodeType::DIM);
1664 getData(ijk, distAcc, maskAcc, maskYDown, dataYDown);
1665 ijk[1] += NodeType::DIM;
1666
1667 ijk[0] += NodeType::DIM;
1668 getData(ijk, distAcc, maskAcc, maskXUp, dataXUp);
1669 ijk[0] -= (NodeType::DIM + NodeType::DIM);
1670 getData(ijk, distAcc, maskAcc, maskXDown, dataXDown);
1671 ijk[0] += NodeType::DIM;
1672
1673 for (typename BoolLeafNodeType::ValueOnIter it = maskNode.beginValueOn(); it; ++it) {
1674
1675 const Index pos = it.pos();
1676 const ValueType val = std::abs(distNode->getValue(pos));
1677
1678 ijk = BoolLeafNodeType::offsetToLocalCoord(pos);
1679 nijk = ijk + maskNode.origin();
1680
1681 if (dataZUp && ijk[2] == (BoolLeafNodeType::DIM - 1)) {
1682 const Index npos = pos - (NodeType::DIM - 1);
1683 if (maskZUp.isOn(npos) && std::abs(dataZUp[npos]) > val) {
1684 newMaskAcc.setValueOn(nijk.offsetBy(0, 0, 1));
1685 }
1686 } else if (dataZDown && ijk[2] == 0) {
1687 const Index npos = pos + (NodeType::DIM - 1);
1688 if (maskZDown.isOn(npos) && std::abs(dataZDown[npos]) > val) {
1689 newMaskAcc.setValueOn(nijk.offsetBy(0, 0, -1));
1690 }
1691 }
1692
1693 if (dataYUp && ijk[1] == (BoolLeafNodeType::DIM - 1)) {
1694 const Index npos = pos - (NodeType::DIM - 1) * NodeType::DIM;
1695 if (maskYUp.isOn(npos) && std::abs(dataYUp[npos]) > val) {
1696 newMaskAcc.setValueOn(nijk.offsetBy(0, 1, 0));
1697 }
1698 } else if (dataYDown && ijk[1] == 0) {
1699 const Index npos = pos + (NodeType::DIM - 1) * NodeType::DIM;
1700 if (maskYDown.isOn(npos) && std::abs(dataYDown[npos]) > val) {
1701 newMaskAcc.setValueOn(nijk.offsetBy(0, -1, 0));
1702 }
1703 }
1704
1705 if (dataXUp && ijk[0] == (BoolLeafNodeType::DIM - 1)) {
1706 const Index npos = pos - (NodeType::DIM - 1) * NodeType::DIM * NodeType::DIM;
1707 if (maskXUp.isOn(npos) && std::abs(dataXUp[npos]) > val) {
1708 newMaskAcc.setValueOn(nijk.offsetBy(1, 0, 0));
1709 }
1710 } else if (dataXDown && ijk[0] == 0) {
1711 const Index npos = pos + (NodeType::DIM - 1) * NodeType::DIM * NodeType::DIM;
1712 if (maskXDown.isOn(npos) && std::abs(dataXDown[npos]) > val) {
1713 newMaskAcc.setValueOn(nijk.offsetBy(-1, 0, 0));
1714 }
1715 }
1716
1717 } // end value on loop
1718 } // end range loop
1719 }
1720
1721 private:
1722
1723 static inline void
1724 getData(const Coord& ijk, tree::ValueAccessor<const TreeType>& distAcc,
1725 tree::ValueAccessor<const BoolTreeType>& maskAcc, NodeMaskType& mask, const ValueType*& data)
1726 {
1727 const LeafNodeType* node = distAcc.probeConstLeaf(ijk);
1728 if (node) {
1729 data = node->buffer().data();
1730 mask = node->getValueMask();
1731 const BoolLeafNodeType* maskNodePt = maskAcc.probeConstLeaf(ijk);
1732 if (maskNodePt) mask -= maskNodePt->getValueMask();
1733 }
1734 }
1735
1736 TreeType const * const mDistTree;
1737 BoolTreeType * const mMaskTree;
1738 BoolLeafNodeType ** const mMaskNodes;
1739
1740 BoolTreeType mNewMaskTree;
1741 }; // struct ExpandLeafNodeRegion
1742
1743
1744 template<typename TreeType>
1745 struct FillLeafNodeVoxels
1746 {
1747 typedef typename TreeType::ValueType ValueType;
1748 typedef typename TreeType::LeafNodeType LeafNodeType;
1749 typedef typename LeafNodeType::NodeMaskType NodeMaskType;
1750 typedef tree::LeafNode<bool, LeafNodeType::LOG2DIM> BoolLeafNodeType;
1751
1752 FillLeafNodeVoxels(const TreeType& tree, std::vector<BoolLeafNodeType*>& maskNodes)
1753 : mTree(&tree), mMaskNodes(!maskNodes.empty() ? &maskNodes.front() : NULL)
1754 {
1755 }
1756
1757 void operator()(const tbb::blocked_range<size_t>& range) const {
1758
1759 tree::ValueAccessor<const TreeType> distAcc(*mTree);
1760
1761 std::vector<Index> indexList;
1762 indexList.reserve(NodeMaskType::SIZE);
1763
1764 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
1765
1766 BoolLeafNodeType& maskNode = *mMaskNodes[n];
1767
1768 const LeafNodeType * distNode = distAcc.probeConstLeaf(maskNode.origin());
1769 if (!distNode) continue;
1770
1771 NodeMaskType mask(distNode->getValueMask());
1772 NodeMaskType& narrowbandMask = maskNode.getValueMask();
1773
1774 for (Index pos = narrowbandMask.findFirstOn(); pos < NodeMaskType::SIZE; ++pos) {
1775 if (narrowbandMask.isOn(pos)) indexList.push_back(pos);
1776 }
1777
1778 mask -= narrowbandMask; // bitwise difference
1779 narrowbandMask.setOff();
1780
1781 const ValueType* data = distNode->buffer().data();
1782 Coord ijk(0, 0, 0);
1783
1784 while (!indexList.empty()) {
1785
1786 const Index pos = indexList.back();
1787 indexList.pop_back();
1788
1789 if (narrowbandMask.isOn(pos)) continue;
1790 narrowbandMask.setOn(pos);
1791
1792 const ValueType dist = std::abs(data[pos]);
1793
1794 ijk = LeafNodeType::offsetToLocalCoord(pos);
1795
1796 Index npos = pos - 1;
1797 if (ijk[2] != 0 && mask.isOn(npos) && std::abs(data[npos]) > dist) {
1798 mask.setOff(npos);
1799 indexList.push_back(npos);
1800 }
1801
1802 npos = pos + 1;
1803 if (ijk[2] != (LeafNodeType::DIM - 1) && mask.isOn(npos) && std::abs(data[npos]) > dist) {
1804 mask.setOff(npos);
1805 indexList.push_back(npos);
1806 }
1807
1808 npos = pos - LeafNodeType::DIM;
1809 if (ijk[1] != 0 && mask.isOn(npos) && std::abs(data[npos]) > dist) {
1810 mask.setOff(npos);
1811 indexList.push_back(npos);
1812 }
1813
1814 npos = pos + LeafNodeType::DIM;
1815 if (ijk[1] != (LeafNodeType::DIM - 1) && mask.isOn(npos) && std::abs(data[npos]) > dist) {
1816 mask.setOff(npos);
1817 indexList.push_back(npos);
1818 }
1819
1820 npos = pos - LeafNodeType::DIM * LeafNodeType::DIM;
1821 if (ijk[0] != 0 && mask.isOn(npos) && std::abs(data[npos]) > dist) {
1822 mask.setOff(npos);
1823 indexList.push_back(npos);
1824 }
1825
1826 npos = pos + LeafNodeType::DIM * LeafNodeType::DIM;
1827 if (ijk[0] != (LeafNodeType::DIM - 1) && mask.isOn(npos) && std::abs(data[npos]) > dist) {
1828 mask.setOff(npos);
1829 indexList.push_back(npos);
1830 }
1831 } // end flood fill loop
1832 } // end range loop
1833 }
1834
1835 TreeType const * const mTree;
1836 BoolLeafNodeType ** const mMaskNodes;
1837 }; // FillLeafNodeVoxels
1838
1839
1840 template<typename TreeType>
1841 struct ExpandNarrowbandMask
1842 {
1843 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
1844 typedef typename BoolTreeType::LeafNodeType BoolLeafNodeType;
1845 typedef typename BoolTreeType::Ptr BoolTreeTypePtr;
1846
1847 ExpandNarrowbandMask(const TreeType& tree, std::vector<BoolTreeTypePtr>& segments)
1848 : mTree(&tree), mSegments(!segments.empty() ? &segments.front() : NULL)
1849 {
1850 }
1851
1852 void operator()(const tbb::blocked_range<size_t>& range) const {
1853
1854 const TreeType& distTree = *mTree;
1855 std::vector<BoolLeafNodeType*> nodes;
1856
1857 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
1858
1859 BoolTreeType& narrowBandMask = *mSegments[n];
1860
1861 BoolTreeType candidateMask(narrowBandMask, false, TopologyCopy());
1862
1863 while (true) {
1864
1865 nodes.clear();
1866 candidateMask.getNodes(nodes);
1867 if (nodes.empty()) break;
1868
1869 const tbb::blocked_range<size_t> nodeRange(0, nodes.size());
1870
1871 tbb::parallel_for(nodeRange, FillLeafNodeVoxels<TreeType>(distTree, nodes));
1872
1873 narrowBandMask.topologyUnion(candidateMask);
1874
1875 ExpandLeafNodeRegion<TreeType> op(distTree, narrowBandMask, nodes);
1876 tbb::parallel_reduce(nodeRange, op);
1877
1878 if (op.newMaskTree().empty()) break;
1879
1880 candidateMask.clear();
1881 candidateMask.merge(op.newMaskTree());
1882 } // end expand loop
1883 } // end range loop
1884 }
1885
1886 TreeType const * const mTree;
1887 BoolTreeTypePtr * const mSegments;
1888 }; // ExpandNarrowbandMask
1889
1890
1891 template<typename TreeType>
1892 struct FloodFillSign
1893 {
1894 typedef typename TreeType::Ptr TreeTypePtr;
1895 typedef typename TreeType::ValueType ValueType;
1896 typedef typename TreeType::LeafNodeType LeafNodeType;
1897 typedef typename TreeType::RootNodeType RootNodeType;
1898 typedef typename RootNodeType::NodeChainType NodeChainType;
1899 typedef typename boost::mpl::at<NodeChainType, boost::mpl::int_<1> >::type InternalNodeType;
1900
1901 FloodFillSign(const TreeType& tree, std::vector<TreeTypePtr>& segments)
1902 : mTree(&tree)
1903 , mSegments(!segments.empty() ? &segments.front() : NULL)
1904 , mMinValue(ValueType(0.0))
1905 {
1906 ValueType minSDFValue = std::numeric_limits<ValueType>::max();
1907
1908 {
1909 std::vector<const InternalNodeType*> nodes;
1910 tree.getNodes(nodes);
1911
1912 if (!nodes.empty()) {
1913 FindMinTileValue<InternalNodeType> minOp(&nodes[0]);
1914 tbb::parallel_reduce(tbb::blocked_range<size_t>(0, nodes.size()), minOp);
1915 minSDFValue = std::min(minSDFValue, minOp.minValue);
1916 }
1917 }
1918
1919 if (minSDFValue > ValueType(0.0)) {
1920 std::vector<const LeafNodeType*> nodes;
1921 tree.getNodes(nodes);
1922 if (!nodes.empty()) {
1923 FindMinVoxelValue<LeafNodeType> minOp(&nodes[0]);
1924 tbb::parallel_reduce(tbb::blocked_range<size_t>(0, nodes.size()), minOp);
1925 minSDFValue = std::min(minSDFValue, minOp.minValue);
1926 }
1927 }
1928
1929 mMinValue = minSDFValue;
1930 }
1931
1932 void operator()(const tbb::blocked_range<size_t>& range) const {
1933 const ValueType interiorValue = -std::abs(mMinValue);
1934 const ValueType exteriorValue = std::abs(mTree->background());
1935 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
1936 tools::signedFloodFillWithValues(*mSegments[n], exteriorValue, interiorValue);
1937 }
1938 }
1939
1940 private:
1941
1942 TreeType const * const mTree;
1943 TreeTypePtr * const mSegments;
1944 ValueType mMinValue;
1945 }; // FloodFillSign
1946
1947
1948 template<typename TreeType>
1949 struct MaskedCopy
1950 {
1951 typedef typename TreeType::Ptr TreeTypePtr;
1952 typedef typename TreeType::ValueType ValueType;
1953 typedef typename TreeType::LeafNodeType LeafNodeType;
1954
1955 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
1956 typedef typename BoolTreeType::Ptr BoolTreeTypePtr;
1957 typedef typename BoolTreeType::LeafNodeType BoolLeafNodeType;
1958
1959 MaskedCopy(const TreeType& tree, std::vector<TreeTypePtr>& segments, std::vector<BoolTreeTypePtr>& masks)
1960 : mTree(&tree)
1961 , mSegments(!segments.empty() ? &segments.front() : NULL)
1962 , mMasks(!masks.empty() ? &masks.front() : NULL)
1963 {
1964 }
1965
1966 void operator()(const tbb::blocked_range<size_t>& range) const {
1967
1968 std::vector<const BoolLeafNodeType*> nodes;
1969
1970 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
1971
1972 const BoolTreeType& mask = *mMasks[n];
1973
1974 nodes.clear();
1975 mask.getNodes(nodes);
1976
1977 Copy op(*mTree, nodes);
1978 tbb::parallel_reduce(tbb::blocked_range<size_t>(0, nodes.size()), op);
1979 mSegments[n] = op.outputTree();
1980 }
1981 }
1982
1983 private:
1984
1985 struct Copy {
1986 Copy(const TreeType& inputTree, std::vector<const BoolLeafNodeType*>& maskNodes)
1987 : mInputTree(&inputTree)
1988 , mMaskNodes(!maskNodes.empty() ? &maskNodes.front() : NULL)
1989 , mOutputTreePtr(new TreeType(inputTree.background()))
1990 {
1991 }
1992
1993 Copy(const Copy& rhs, tbb::split)
1994 : mInputTree(rhs.mInputTree)
1995 , mMaskNodes(rhs.mMaskNodes)
1996 , mOutputTreePtr(new TreeType(mInputTree->background()))
1997 {
1998 }
1999
2000 TreeTypePtr& outputTree() { return mOutputTreePtr; }
2001
2002 void join(Copy& rhs) { mOutputTreePtr->merge(*rhs.mOutputTreePtr); }
2003
2004 void operator()(const tbb::blocked_range<size_t>& range) {
2005
2006 tree::ValueAccessor<const TreeType> inputAcc(*mInputTree);
2007 tree::ValueAccessor<TreeType> outputAcc(*mOutputTreePtr);
2008
2009 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
2010
2011 const BoolLeafNodeType& maskNode = *mMaskNodes[n];
2012 if (maskNode.isEmpty()) continue;
2013
2014 const Coord& ijk = maskNode.origin();
2015
2016 const LeafNodeType* inputNode = inputAcc.probeConstLeaf(ijk);
2017 if (inputNode) {
2018
2019 LeafNodeType* outputNode = outputAcc.touchLeaf(ijk);
2020
2021 for (typename BoolLeafNodeType::ValueOnCIter it = maskNode.cbeginValueOn(); it; ++it) {
2022 const Index idx = it.pos();
2023 outputNode->setValueOn(idx, inputNode->getValue(idx));
2024 }
2025 } else {
2026 const int valueDepth = inputAcc.getValueDepth(ijk);
2027 if (valueDepth >= 0) {
2028 outputAcc.addTile(TreeType::RootNodeType::LEVEL - valueDepth,
2029 ijk, inputAcc.getValue(ijk), true);
2030 }
2031 }
2032 }
2033 }
2034
2035 private:
2036 TreeType const * const mInputTree;
2037 BoolLeafNodeType const * const * const mMaskNodes;
2038 TreeTypePtr mOutputTreePtr;
2039 }; // struct Copy
2040
2041 TreeType const * const mTree;
2042 TreeTypePtr * const mSegments;
2043 BoolTreeTypePtr * const mMasks;
2044 }; // MaskedCopy
2045
2046
2048
2049
2050 template<typename VolumePtrType>
2051 struct ComputeActiveVoxelCount
2052 {
2053 ComputeActiveVoxelCount(std::vector<VolumePtrType>& segments, size_t *countArray)
2054 : mSegments(!segments.empty() ? &segments.front() : NULL)
2055 , mCountArray(countArray)
2056 {
2057 }
2058
2059 void operator()(const tbb::blocked_range<size_t>& range) const {
2060 for (size_t n = range.begin(), N = range.end(); n < N; ++n) {
2061 mCountArray[n] = mSegments[n]->activeVoxelCount();
2062 }
2063 }
2064
2065 VolumePtrType * const mSegments;
2066 size_t * const mCountArray;
2067 };
2068
2069
2070 struct GreaterCount
2071 {
2072 GreaterCount(const size_t *countArray) : mCountArray(countArray) {}
2073
2074 inline bool operator() (const size_t& lhs, const size_t& rhs) const
2075 {
2076 return (mCountArray[lhs] > mCountArray[rhs]);
2077 }
2078
2079 size_t const * const mCountArray;
2080 };
2081
2083
2084
2085 template<typename TreeType>
2086 struct GridOrTreeConstructor
2087 {
2088 typedef typename TreeType::Ptr TreeTypePtr;
2089 typedef typename TreeType::template ValueConverter<bool>::Type::Ptr BoolTreePtrType;
2090
2091 static BoolTreePtrType constructMask(const TreeType&, BoolTreePtrType& maskTree) { return maskTree; }
2092 static TreeTypePtr construct(const TreeType&, TreeTypePtr& tree) { return tree; }
2093 };
2094
2095
2096 template<typename TreeType>
2097 struct GridOrTreeConstructor<Grid<TreeType> >
2098 {
2099 typedef Grid<TreeType> GridType;
2100 typedef typename Grid<TreeType>::Ptr GridTypePtr;
2101 typedef typename TreeType::Ptr TreeTypePtr;
2102
2103 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
2104 typedef typename BoolTreeType::Ptr BoolTreePtrType;
2105 typedef Grid<BoolTreeType> BoolGridType;
2106 typedef typename BoolGridType::Ptr BoolGridPtrType;
2107
2108 static BoolGridPtrType constructMask(const GridType& grid, BoolTreePtrType& maskTree) {
2109 BoolGridPtrType maskGrid(BoolGridType::create(maskTree));
2110 maskGrid->setTransform(grid.transform().copy());
2111 return maskGrid;
2112 }
2113
2114 static GridTypePtr construct(const GridType& grid, TreeTypePtr& maskTree) {
2115 GridTypePtr maskGrid(GridType::create(maskTree));
2116 maskGrid->setTransform(grid.transform().copy());
2117 maskGrid->insertMeta(grid);
2118 return maskGrid;
2119 }
2120 };
2121
2122
2123 } // namespace level_set_util_internal
2124
2125
2127
2128
2129 template <class GridType>
2130 inline void
2131 sdfToFogVolume(GridType& grid, typename GridType::ValueType cutoffDistance)
2132 {
2133 typedef typename GridType::ValueType ValueType;
2134 typedef typename GridType::TreeType TreeType;
2135 typedef typename TreeType::LeafNodeType LeafNodeType;
2136 typedef typename TreeType::RootNodeType RootNodeType;
2137 typedef typename RootNodeType::NodeChainType NodeChainType;
2138 typedef typename boost::mpl::at<NodeChainType, boost::mpl::int_<1> >::type InternalNodeType;
2139
2141
2142 TreeType& tree = grid.tree();
2143
2144 size_t numLeafNodes = 0, numInternalNodes = 0;
2145
2146 std::vector<LeafNodeType*> nodes;
2147 std::vector<size_t> leafnodeCount;
2148
2149 {
2150 // Compute the prefix sum of the leafnode count in each internal node.
2151 std::vector<InternalNodeType*> internalNodes;
2152 tree.getNodes(internalNodes);
2153
2154 numInternalNodes = internalNodes.size();
2155
2156 leafnodeCount.push_back(0);
2157 for (size_t n = 0; n < numInternalNodes; ++n) {
2158 leafnodeCount.push_back(leafnodeCount.back() + internalNodes[n]->leafCount());
2159 }
2160
2161 numLeafNodes = leafnodeCount.back();
2162
2163 // Steal all leafnodes (Removes them from the tree and transfers ownership.)
2164 nodes.reserve(numLeafNodes);
2165
2166 for (size_t n = 0; n < numInternalNodes; ++n) {
2167 internalNodes[n]->stealNodes(nodes, tree.background(), false);
2168 }
2169
2170 // Clamp cutoffDistance to min sdf value
2171 ValueType minSDFValue = std::numeric_limits<ValueType>::max();
2172
2173 {
2174 level_set_util_internal::FindMinTileValue<InternalNodeType> minOp(&internalNodes[0]);
2175 tbb::parallel_reduce(tbb::blocked_range<size_t>(0, internalNodes.size()), minOp);
2176 minSDFValue = std::min(minSDFValue, minOp.minValue);
2177 }
2178
2179 if (minSDFValue > ValueType(0.0)) {
2180 level_set_util_internal::FindMinVoxelValue<LeafNodeType> minOp(&nodes[0]);
2181 tbb::parallel_reduce(tbb::blocked_range<size_t>(0, nodes.size()), minOp);
2182 minSDFValue = std::min(minSDFValue, minOp.minValue);
2183 }
2184
2185 cutoffDistance = -std::abs(cutoffDistance);
2186 cutoffDistance = minSDFValue > cutoffDistance ? minSDFValue : cutoffDistance;
2187 }
2188
2189 // Transform voxel values and delete leafnodes that are uniformly zero after the transformation.
2190 // (Positive values are set to zero with inactive state and negative values are remapped
2191 // from zero to one with active state.)
2192 tbb::parallel_for(tbb::blocked_range<size_t>(0, nodes.size()),
2193 level_set_util_internal::SDFVoxelsToFogVolume<LeafNodeType>(&nodes[0], cutoffDistance));
2194
2195 // Populate a new tree with the remaining leafnodes
2196 typename TreeType::Ptr newTree(new TreeType(ValueType(0.0)));
2197
2198 level_set_util_internal::PopulateTree<TreeType> populate(*newTree, &nodes[0], &leafnodeCount[0], 0);
2199 tbb::parallel_reduce(tbb::blocked_range<size_t>(0, numInternalNodes), populate);
2200
2201 // Transform tile values (Negative valued tiles are set to 1.0 with active state.)
2202 std::vector<InternalNodeType*> internalNodes;
2203 newTree->getNodes(internalNodes);
2204
2205 tbb::parallel_for(tbb::blocked_range<size_t>(0, internalNodes.size()),
2206 level_set_util_internal::SDFTilesToFogVolume<TreeType, InternalNodeType>(tree, &internalNodes[0]));
2207
2208 {
2209 tree::ValueAccessor<const TreeType> acc(tree);
2210
2211 typename TreeType::ValueAllIter it(*newTree);
2212 it.setMaxDepth(TreeType::ValueAllIter::LEAF_DEPTH - 2);
2213
2214 for ( ; it; ++it) {
2215 if (acc.getValue(it.getCoord()) < ValueType(0.0)) {
2216 it.setValue(ValueType(1.0));
2217 it.setActiveState(true);
2218 }
2219 }
2220 }
2221
2222 // Insert missing root level tiles. (The new tree is constructed from the remaining leafnodes
2223 // and will therefore not contain any root level tiles that may exist in the original tree.)
2224 {
2225 typename TreeType::ValueAllIter it(tree);
2226 it.setMaxDepth(TreeType::ValueAllIter::ROOT_DEPTH);
2227 for ( ; it; ++it) {
2228 if (it.getValue() < ValueType(0.0)) {
2229 newTree->addTile(TreeType::ValueAllIter::ROOT_LEVEL, it.getCoord(), ValueType(1.0), true);
2230 }
2231 }
2232 }
2233
2234 grid.setTree(newTree);
2235 grid.setGridClass(GRID_FOG_VOLUME);
2236 }
2237
2238
2240
2241
2242 template <class GridOrTreeType>
2243 inline typename GridOrTreeType::template ValueConverter<bool>::Type::Ptr
2244 sdfInteriorMask(const GridOrTreeType& volume, typename GridOrTreeType::ValueType isovalue)
2245 {
2246 typedef typename TreeAdapter<GridOrTreeType>::TreeType TreeType;
2247 const TreeType& tree = TreeAdapter<GridOrTreeType>::tree(volume);
2248
2249 typedef typename TreeType::template ValueConverter<bool>::Type::Ptr BoolTreePtrType;
2250 BoolTreePtrType mask = level_set_util_internal::computeInteriorMask(tree, isovalue);
2251
2252 return level_set_util_internal::GridOrTreeConstructor<GridOrTreeType>::constructMask(volume, mask);
2253 }
2254
2255
2256 template<typename GridOrTreeType>
2257 inline typename GridOrTreeType::template ValueConverter<bool>::Type::Ptr
2258 extractEnclosedRegion(const GridOrTreeType& volume,
2259 typename GridOrTreeType::ValueType isovalue,
2260 const typename TreeAdapter<GridOrTreeType>::TreeType::template ValueConverter<bool>::Type* fillMask)
2261 {
2262 typedef typename TreeAdapter<GridOrTreeType>::TreeType TreeType;
2263 const TreeType& tree = TreeAdapter<GridOrTreeType>::tree(volume);
2264
2265 typedef typename TreeType::template ValueConverter<char>::Type::Ptr CharTreePtrType;
2266 CharTreePtrType regionMask = level_set_util_internal::computeEnclosedRegionMask(tree, isovalue, fillMask);
2267
2268 typedef typename TreeType::template ValueConverter<bool>::Type::Ptr BoolTreePtrType;
2269 BoolTreePtrType mask = level_set_util_internal::computeInteriorMask(*regionMask, 0);
2270
2271 return level_set_util_internal::GridOrTreeConstructor<GridOrTreeType>::constructMask(volume, mask);
2272 }
2273
2274
2276
2277
2278 template<typename GridOrTreeType>
2279 inline typename GridOrTreeType::template ValueConverter<bool>::Type::Ptr
2280 extractIsosurfaceMask(const GridOrTreeType& volume, typename GridOrTreeType::ValueType isovalue)
2281 {
2282 typedef typename TreeAdapter<GridOrTreeType>::TreeType TreeType;
2283 const TreeType& tree = TreeAdapter<GridOrTreeType>::tree(volume);
2284
2285 std::vector<const typename TreeType::LeafNodeType*> nodes;
2286 tree.getNodes(nodes);
2287
2288 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
2289 typename BoolTreeType::Ptr mask(new BoolTreeType(false));
2290
2291 level_set_util_internal::MaskIsovalueCrossingVoxels<TreeType> op(tree, nodes, *mask, isovalue);
2292 tbb::parallel_reduce(tbb::blocked_range<size_t>(0, nodes.size()), op);
2293
2294 return level_set_util_internal::GridOrTreeConstructor<GridOrTreeType>::constructMask(volume, mask);
2295 }
2296
2297
2299
2300
2301 template<typename GridOrTreeType>
2302 inline void
2303 extractActiveVoxelSegmentMasks(const GridOrTreeType& volume,
2304 std::vector<typename GridOrTreeType::template ValueConverter<bool>::Type::Ptr>& masks)
2305 {
2306 typedef typename TreeAdapter<GridOrTreeType>::TreeType TreeType;
2307 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
2308 typedef typename BoolTreeType::Ptr BoolTreePtrType;
2309 typedef typename BoolTreeType::LeafNodeType BoolLeafNodeType;
2310
2311 typedef level_set_util_internal::NodeMaskSegment<BoolLeafNodeType> NodeMaskSegmentType;
2312 typedef typename NodeMaskSegmentType::Ptr NodeMaskSegmentPtrType;
2313 typedef typename std::vector<NodeMaskSegmentPtrType> NodeMaskSegmentPtrVector;
2314 typedef typename std::vector<NodeMaskSegmentType*> NodeMaskSegmentRawPtrVector;
2315
2317
2318 const TreeType& tree = TreeAdapter<GridOrTreeType>::tree(volume);
2319
2320 BoolTreeType topologyMask(tree, false, TopologyCopy());
2321
2322 if (topologyMask.hasActiveTiles()) {
2323 topologyMask.voxelizeActiveTiles();
2324 }
2325
2326 std::vector<BoolLeafNodeType*> leafnodes;
2327 topologyMask.getNodes(leafnodes);
2328
2329 if (leafnodes.empty()) return;
2330
2331 // 1. Split node masks into disjoint segments
2332 // Note: The LeafNode origin coord is modified to record the 'leafnodes' array offset.
2333
2334 boost::scoped_array<NodeMaskSegmentPtrVector> nodeSegmentArray(new NodeMaskSegmentPtrVector[leafnodes.size()]);
2335
2336 tbb::parallel_for(tbb::blocked_range<size_t>(0, leafnodes.size()),
2337 level_set_util_internal::SegmentNodeMask<BoolLeafNodeType>(leafnodes, nodeSegmentArray.get()));
2338
2339
2340 // 2. Compute segment connectivity
2341
2342 tbb::parallel_for(tbb::blocked_range<size_t>(0, leafnodes.size()),
2343 level_set_util_internal::ConnectNodeMaskSegments<BoolTreeType, BoolLeafNodeType>(
2344 topologyMask, nodeSegmentArray.get()));
2345
2346 topologyMask.clear();
2347
2348 size_t nodeSegmentCount = 0;
2349 for (size_t n = 0, N = leafnodes.size(); n < N; ++n) {
2350 nodeSegmentCount += nodeSegmentArray[n].size();
2351 }
2352
2353 // 3. Group connected segments
2354
2355 std::deque<NodeMaskSegmentRawPtrVector> nodeSegmentGroups;
2356
2357 NodeMaskSegmentType* nextSegment = nodeSegmentArray[0][0].get();
2358 while (nextSegment) {
2359
2360 nodeSegmentGroups.push_back(NodeMaskSegmentRawPtrVector());
2361
2362 std::vector<NodeMaskSegmentType*>& segmentGroup = nodeSegmentGroups.back();
2363 segmentGroup.reserve(nodeSegmentCount);
2364
2365 std::deque<NodeMaskSegmentType*> segmentQueue;
2366 segmentQueue.push_back(nextSegment);
2367 nextSegment = NULL;
2368
2369 while (!segmentQueue.empty()) {
2370
2371 NodeMaskSegmentType* segment = segmentQueue.back();
2372 segmentQueue.pop_back();
2373
2374 if (segment->visited) continue;
2375 segment->visited = true;
2376
2377 segmentGroup.push_back(segment);
2378
2379 // queue connected segments
2380 std::vector<NodeMaskSegmentType*>& connections = segment->connections;
2381 for (size_t n = 0, N = connections.size(); n < N; ++n) {
2382 if (!connections[n]->visited) segmentQueue.push_back(connections[n]);
2383 }
2384 }
2385
2386 // find first unvisited segment
2387 for (size_t n = 0, N = leafnodes.size(); n < N; ++n) {
2388 NodeMaskSegmentPtrVector& nodeSegments = nodeSegmentArray[n];
2389 for (size_t i = 0, I = nodeSegments.size(); i < I; ++i) {
2390 if (!nodeSegments[i]->visited) nextSegment = nodeSegments[i].get();
2391 }
2392 }
2393 }
2394
2395 // 4. Mask segment groups
2396
2397 if (nodeSegmentGroups.size() == 1) {
2398
2399 BoolTreePtrType mask(new BoolTreeType(tree, false, TopologyCopy()));
2400
2401 if (mask->hasActiveTiles()) {
2402 mask->voxelizeActiveTiles();
2403 }
2404
2405 masks.push_back(
2406 level_set_util_internal::GridOrTreeConstructor<GridOrTreeType>::constructMask(volume, mask));
2407
2408 } else if (nodeSegmentGroups.size() > 1) {
2409
2410 for (size_t n = 0, N = nodeSegmentGroups.size(); n < N; ++n) {
2411
2412 NodeMaskSegmentRawPtrVector& segmentGroup = nodeSegmentGroups[n];
2413
2414 level_set_util_internal::MaskSegmentGroup<BoolTreeType> op(segmentGroup);
2415 tbb::parallel_reduce(tbb::blocked_range<size_t>(0, segmentGroup.size()), op);
2416
2417 masks.push_back(
2418 level_set_util_internal::GridOrTreeConstructor<GridOrTreeType>::constructMask(volume, op.mask()));
2419 }
2420 }
2421
2422 // 5. Sort segments in descending order based on the active voxel count.
2423
2424 if (masks.size() > 1) {
2425 const size_t segmentCount = masks.size();
2426
2427 boost::scoped_array<size_t> segmentOrderArray(new size_t[segmentCount]);
2428 boost::scoped_array<size_t> voxelCountArray(new size_t[segmentCount]);
2429
2430 for (size_t n = 0; n < segmentCount; ++n) {
2431 segmentOrderArray[n] = n;
2432 }
2433
2434 tbb::parallel_for(tbb::blocked_range<size_t>(0, segmentCount),
2435 level_set_util_internal::ComputeActiveVoxelCount<BoolTreePtrType>(masks, voxelCountArray.get()));
2436
2437 size_t *begin = segmentOrderArray.get();
2438 tbb::parallel_sort(begin, begin + masks.size(), level_set_util_internal::GreaterCount(voxelCountArray.get()));
2439
2440 std::vector<BoolTreePtrType> orderedMasks;
2441 orderedMasks.reserve(masks.size());
2442
2443 for (size_t n = 0; n < segmentCount; ++n) {
2444 orderedMasks.push_back(masks[segmentOrderArray[n]]);
2445 }
2446
2447 masks.swap(orderedMasks);
2448 }
2449
2450 } // extractActiveVoxelSegmentMasks()
2451
2452
2453 template<typename GridOrTreeType>
2454 inline void
2455 segmentActiveVoxels(const GridOrTreeType& volume, std::vector<typename GridOrTreeType::Ptr>& segments)
2456 {
2457 typedef typename TreeAdapter<GridOrTreeType>::TreeType TreeType;
2458 typedef typename TreeType::Ptr TreePtrType;
2459 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
2460 typedef typename BoolTreeType::Ptr BoolTreePtrType;
2461
2462 const TreeType& inputTree = TreeAdapter<GridOrTreeType>::tree(volume);
2463
2464 // 1. Segment active topology mask
2465 std::vector<BoolTreePtrType> maskSegmentArray;
2466 extractActiveVoxelSegmentMasks(inputTree, maskSegmentArray);
2467
2468 const size_t numSegments = maskSegmentArray.size();
2469
2470 if (numSegments < 2) {
2471 // single segment early-out
2472 TreePtrType segment(new TreeType(inputTree));
2473 segments.push_back(
2474 level_set_util_internal::GridOrTreeConstructor<GridOrTreeType>::construct(volume, segment));
2475 return;
2476 }
2477
2478 const tbb::blocked_range<size_t> segmentRange(0, numSegments);
2479
2480 // 2. Export segments
2481 std::vector<TreePtrType> outputSegmentArray(numSegments);
2482
2483 tbb::parallel_for(segmentRange,
2484 level_set_util_internal::MaskedCopy<TreeType>(inputTree, outputSegmentArray, maskSegmentArray));
2485
2486 for (size_t n = 0, N = numSegments; n < N; ++n) {
2487 segments.push_back(
2488 level_set_util_internal::GridOrTreeConstructor<GridOrTreeType>::construct(volume, outputSegmentArray[n]));
2489 }
2490 }
2491
2492
2493 template<typename GridOrTreeType>
2494 inline void
2495 segmentSDF(const GridOrTreeType& volume, std::vector<typename GridOrTreeType::Ptr>& segments)
2496 {
2497 typedef typename TreeAdapter<GridOrTreeType>::TreeType TreeType;
2498 typedef typename TreeType::Ptr TreePtrType;
2499 typedef typename TreeType::template ValueConverter<bool>::Type BoolTreeType;
2500 typedef typename BoolTreeType::Ptr BoolTreePtrType;
2501
2502 const TreeType& inputTree = TreeAdapter<GridOrTreeType>::tree(volume);
2503
2504 // 1. Mask zero crossing voxels
2505 BoolTreePtrType mask = extractIsosurfaceMask(inputTree, lsutilGridZero<GridOrTreeType>());
2506
2507 // 2. Segment the zero crossing mask
2508 std::vector<BoolTreePtrType> maskSegmentArray;
2509 extractActiveVoxelSegmentMasks(*mask, maskSegmentArray);
2510
2511 const size_t numSegments = maskSegmentArray.size();
2512
2513 if (numSegments < 2) {
2514 // single segment early-out
2515 TreePtrType segment(new TreeType(inputTree));
2516 segments.push_back(
2517 level_set_util_internal::GridOrTreeConstructor<GridOrTreeType>::construct(volume, segment));
2518 return;
2519 }
2520
2521 const tbb::blocked_range<size_t> segmentRange(0, numSegments);
2522
2523
2524 // 3. Expand zero crossing mask to capture sdf narrow band
2525 tbb::parallel_for(segmentRange,
2526 level_set_util_internal::ExpandNarrowbandMask<TreeType>(inputTree, maskSegmentArray));
2527
2528 // 4. Export sdf segments
2529 std::vector<TreePtrType> outputSegmentArray(numSegments);
2530
2531 tbb::parallel_for(segmentRange,
2532 level_set_util_internal::MaskedCopy<TreeType>(inputTree, outputSegmentArray, maskSegmentArray));
2533
2534 tbb::parallel_for(segmentRange,
2535 level_set_util_internal::FloodFillSign<TreeType>(inputTree, outputSegmentArray));
2536
2537
2538 for (size_t n = 0, N = numSegments; n < N; ++n) {
2539 segments.push_back(
2540 level_set_util_internal::GridOrTreeConstructor<GridOrTreeType>::construct(volume, outputSegmentArray[n]));
2541 }
2542 }
2543
2544
2545 } // namespace tools
2546 } // namespace OPENVDB_VERSION_NAME
2547 } // namespace openvdb
2548
2549 #endif // OPENVDB_TOOLS_LEVEL_SET_UTIL_HAS_BEEN_INCLUDED
2550
2551 // Copyright (c) 2012-2016 DreamWorks Animation LLC
2552 // All rights reserved. This software is distributed under the
2553 // Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
2554
openvdb::v3_2_0::tools::level_set_util_internal::FillLeafNodeVoxels::BoolLeafNodeType
tree::LeafNode< bool, LeafNodeType::LOG2DIM > BoolLeafNodeType
Definition: LevelSetUtil.h:1750
openvdb::v3_2_0::tools::level_set_util_internal::SDFVoxelsToFogVolume::SDFVoxelsToFogVolume
SDFVoxelsToFogVolume(LeafNodeType **nodes, ValueType cutoffDistance)
Definition: LevelSetUtil.h:465
openvdb::v3_2_0::tree::ValueAccessor::addLeaf
void addLeaf(LeafNodeT *leaf)
Add the specified leaf to this tree, possibly creating a child branch in the process. If the leaf node already exists, replace it.
Definition: ValueAccessor.h:374
openvdb::v3_2_0::tools::level_set_util_internal::ExpandNarrowbandMask::BoolTreeType
TreeType::template ValueConverter< bool >::Type BoolTreeType
Definition: LevelSetUtil.h:1843
openvdb::v3_2_0::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::v3_2_0::tools::level_set_util_internal::LabelBoundaryVoxels::operator()
void operator()(const tbb::blocked_range< size_t > &range) const
Definition: LevelSetUtil.h:338
openvdb::v3_2_0::tools::level_set_util_internal::ConnectNodeMaskSegments::NodeMaskSegmentType
NodeMaskSegment< NodeType > NodeMaskSegmentType
Definition: LevelSetUtil.h:1398
openvdb::v3_2_0::tools::level_set_util_internal::ComputeActiveVoxelCount
Definition: LevelSetUtil.h:2051
openvdb::v3_2_0::tools::level_set_util_internal::FillMaskBoundary::LeafNodeType
TreeType::LeafNodeType LeafNodeType
Definition: LevelSetUtil.h:526
openvdb::v3_2_0::tools::level_set_util_internal::LabelBoundaryVoxels::mMaskNodes
CharLeafNodeType **const mMaskNodes
Definition: LevelSetUtil.h:368
openvdb::v3_2_0::tree::ValueAccessor::probeLeaf
LeafNodeT * probeLeaf(const Coord &xyz)
Return a pointer to the leaf node that contains voxel (x, y, z), or NULL if no such node exists...
Definition: ValueAccessor.h:424
openvdb::v3_2_0::GRID_FOG_VOLUME
Definition: Types.h:214
openvdb::v3_2_0::tools::level_set_util_internal::FindMinTileValue
Definition: LevelSetUtil.h:427
openvdb::v3_2_0::tools::level_set_util_internal::MaskInteriorVoxels::mNodes
LeafNodeType const *const *const mNodes
Definition: LevelSetUtil.h:242
Types.h
openvdb::v3_2_0::tools::level_set_util_internal::ExpandLeafNodeRegion::ExpandLeafNodeRegion
ExpandLeafNodeRegion(const TreeType &distTree, BoolTreeType &maskTree, std::vector< BoolLeafNodeType *> &maskNodes)
Definition: LevelSetUtil.h:1611
openvdb::v3_2_0::math::Transform::copy
Ptr copy() const
Definition: Transform.h:77
openvdb::v3_2_0::tree::ValueAccessor::getValueDepth
int getValueDepth(const Coord &xyz) const
Definition: ValueAccessor.h:275
openvdb::v3_2_0::tools::level_set_util_internal::FillLeafNodeVoxels::mMaskNodes
BoolLeafNodeType **const mMaskNodes
Definition: LevelSetUtil.h:1836
openvdb::v3_2_0::tools::level_set_util_internal::MaskedCopy::BoolLeafNodeType
BoolTreeType::LeafNodeType BoolLeafNodeType
Definition: LevelSetUtil.h:1957
openvdb::v3_2_0::tools::level_set_util_internal::MaskInteriorVoxels::BoolLeafNodeType
tree::LeafNode< bool, LeafNodeType::LOG2DIM > BoolLeafNodeType
Definition: LevelSetUtil.h:205
openvdb::v3_2_0::tools::level_set_util_internal::ConnectNodeMaskSegments
Definition: LevelSetUtil.h:1395
openvdb::v3_2_0::tools::level_set_util_internal::FloodFillSign
Definition: LevelSetUtil.h:1892
openvdb::v3_2_0::tools::level_set_util_internal::ExpandNarrowbandMask::BoolLeafNodeType
BoolTreeType::LeafNodeType BoolLeafNodeType
Definition: LevelSetUtil.h:1844
openvdb::v3_2_0::TopologyCopy
Definition: Types.h:442
openvdb::v3_2_0::tools::level_set_util_internal::MaskIsovalueCrossingVoxels::BoolLeafNodeType
BoolTreeType::LeafNodeType BoolLeafNodeType
Definition: LevelSetUtil.h:1161
openvdb::v3_2_0::tools::level_set_util_internal::FindMinTileValue::join
void join(FindMinTileValue &rhs)
Definition: LevelSetUtil.h:452
openvdb::v3_2_0::tools::level_set_util_internal::LabelBoundaryVoxels::mNodes
LeafNodeType const *const *const mNodes
Definition: LevelSetUtil.h:367
openvdb::v3_2_0::tools::level_set_util_internal::PopulateTree::ValueType
TreeType::ValueType ValueType
Definition: LevelSetUtil.h:278
openvdb::v3_2_0::tools::level_set_util_internal::GridOrTreeConstructor< Grid< TreeType > >::BoolGridPtrType
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Definition: LevelSetUtil.h:2106
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Definition: LevelSetUtil.h:2059
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Definition: LevelSetUtil.h:1275
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Mark the voxel at the given coordinates as active but don&#39;t change its value.
Definition: LeafNode.h:714
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Definition: LevelSetUtil.h:375
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Definition: LevelSetUtil.h:213
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Definition: LevelSetUtil.h:253
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Separates disjoint SDF surfaces into distinct grids or trees.
Definition: LevelSetUtil.h:2495
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Definition: LevelSetUtil.h:290
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Definition: LevelSetUtil.h:2091
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Definition: LevelSetUtil.h:454
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Definition: LevelSetUtil.h:395
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const boost::disable_if_c< VecTraits< T >::IsVec, T >::type & max(const T &a, const T &b)
Definition: Composite.h:132
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Definition: LevelSetUtil.h:2089
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Definition: LevelSetUtil.h:498
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Definition: LevelSetUtil.h:1282
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FillLeafNodeVoxels(const TreeType &tree, std::vector< BoolLeafNodeType *> &maskNodes)
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Definition: LevelSetUtil.h:369
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openvdb::v3_2_0::tools::level_set_util_internal::MaskedCopy
Definition: LevelSetUtil.h:1949
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void setValueOn(const Coord &xyz, const ValueType &value)
Set the value of the voxel at the given coordinates and mark the voxel as active. ...
Definition: ValueAccessor.h:292
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math::Transform & transform()
Return a reference to this grid&#39;s transform, which might be shared with other grids.
Definition: Grid.h:335
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Definition: LevelSetUtil.h:1745
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void join(ExpandLeafNodeRegion &rhs)
Definition: LevelSetUtil.h:1629
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Definition: LevelSetUtil.h:1559
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MaskedCopy(const TreeType &tree, std::vector< TreeTypePtr > &segments, std::vector< BoolTreeTypePtr > &masks)
Definition: LevelSetUtil.h:1959
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Definition: LevelSetUtil.h:2101
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void sdfToFogVolume(GridType &grid, typename GridType::ValueType cutoffDistance=lsutilGridMax< GridType >())
Threaded method to convert a sparse level set/SDF into a sparse fog volume.
Definition: LevelSetUtil.h:2131
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Definition: LevelSetUtil.h:2070
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Definition: Types.h:58
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Definition: LevelSetUtil.h:2072
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Definition: LevelSetUtil.h:491
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Definition: LevelSetUtil.h:1569
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Definition: LevelSetUtil.h:1368
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void extractActiveVoxelSegmentMasks(const GridOrTreeType &volume, std::vector< typename GridOrTreeType::template ValueConverter< bool >::Type::Ptr > &masks)
Return a mask for each connected component of the given grid&#39;s active voxels.
Definition: LevelSetUtil.h:2303
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Definition: LevelSetUtil.h:202
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void operator()(const tbb::blocked_range< size_t > &range) const
Definition: LevelSetUtil.h:1966
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TreeType::template ValueConverter< char >::Type::Ptr computeEnclosedRegionMask(const TreeType &tree, typename TreeType::ValueType isovalue, const typename TreeType::template ValueConverter< bool >::Type *fillMask)
Constructs a memory light char tree that represents the exterior region with +1 and the interior regi...
Definition: LevelSetUtil.h:956
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#define OPENVDB_VERSION_NAME
Definition: version.h:43
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void operator()(const tbb::blocked_range< size_t > &range) const
Definition: LevelSetUtil.h:536
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void join(PopulateTree &rhs)
Definition: LevelSetUtil.h:315
openvdb::v3_2_0::tools::level_set_util_internal::GridOrTreeConstructor< Grid< TreeType > >::BoolTreeType
TreeType::template ValueConverter< bool >::Type BoolTreeType
Definition: LevelSetUtil.h:2103
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Grid< TreeType >::Ptr GridTypePtr
Definition: LevelSetUtil.h:2100
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void join(MaskIsovalueCrossingVoxels &rhs)
Definition: LevelSetUtil.h:1256
openvdb::v3_2_0::tools::level_set_util_internal::MaskedCopy::ValueType
TreeType::ValueType ValueType
Definition: LevelSetUtil.h:1952
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const Coord & origin() const
Return the grid index coordinates of this node&#39;s local origin.
Definition: LeafNode.h:475
openvdb::v3_2_0::tools::level_set_util_internal::FillMaskBoundary
Definition: LevelSetUtil.h:523
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const ValueType & getValue(const Coord &xyz) const
Return the value of the voxel at the given coordinates.
Definition: ValueAccessor.h:256
openvdb::v3_2_0::tools::level_set_util_internal::PopulateTree::PopulateTree
PopulateTree(TreeType &tree, LeafNodeType **leafnodes, const size_t *nodexIndexMap, ValueType background)
Definition: LevelSetUtil.h:281
openvdb::v3_2_0::tools::level_set_util_internal::SDFTilesToFogVolume::operator()
void operator()(const tbb::blocked_range< size_t > &range) const
Definition: LevelSetUtil.h:501
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SegmentNodeMask(std::vector< NodeType *> &nodes, NodeMaskSegmentVector *nodeMaskArray)
Definition: LevelSetUtil.h:1372
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Definition: LevelSetUtil.h:1895
SignedFloodFill.h
Propagates the sign of distance values from the active voxels in the narrow band to the inactive valu...
openvdb::v3_2_0::tools::level_set_util_internal::MaskIsovalueCrossingVoxels::BoolTreeType
InputTreeType::template ValueConverter< bool >::Type BoolTreeType
Definition: LevelSetUtil.h:1160
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Templated block class to hold specific data types and a fixed number of values determined by Log2Dim...
Definition: LeafNode.h:65
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ConnectNodeMaskSegments(const TreeType &tree, NodeMaskSegmentVector *nodeMaskArray)
Definition: LevelSetUtil.h:1402
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Definition: LevelSetUtil.h:1953
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Definition: LevelSetUtil.h:1606
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void signedFloodFillWithValues(TreeOrLeafManagerT &tree, const typename TreeOrLeafManagerT::ValueType &outsideWidth, const typename TreeOrLeafManagerT::ValueType &insideWidth, 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:280
openvdb::v3_2_0::tools::level_set_util_internal::FindMinVoxelValue::minValue
ValueType minValue
Definition: LevelSetUtil.h:420
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NodeMaskSegmentVector *const mNodeMaskArray
Definition: LevelSetUtil.h:1390
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FloodFillSign(const TreeType &tree, std::vector< TreeTypePtr > &segments)
Definition: LevelSetUtil.h:1901
openvdb::v3_2_0::TreeAdapter
This adapter allows code that is templated on a Tree type to accept either a Tree type or a Grid type...
Definition: Grid.h:898
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InternalNodeType **const mMaskNodes
Definition: LevelSetUtil.h:270
MeshToVolume.h
Convert polygonal meshes that consist of quads and/or triangles into signed or unsigned distance fiel...
openvdb::v3_2_0::tools::level_set_util_internal::MaskInteriorTiles::operator()
void operator()(const tbb::blocked_range< size_t > &range) const
Definition: LevelSetUtil.h:256
openvdb::v3_2_0::math::Coord::offsetBy
Coord offsetBy(Int32 dx, Int32 dy, Int32 dz) const
Definition: Coord.h:111
openvdb::v3_2_0::tools::level_set_util_internal::FloodFillSign::RootNodeType
TreeType::RootNodeType RootNodeType
Definition: LevelSetUtil.h:1897
openvdb::v3_2_0::tools::level_set_util_internal::GridOrTreeConstructor< Grid< TreeType > >::BoolGridType
Grid< BoolTreeType > BoolGridType
Definition: LevelSetUtil.h:2105
openvdb::v3_2_0::tools::level_set_util_internal::MaskIsovalueCrossingVoxels::InputLeafNodeType
InputTreeType::LeafNodeType InputLeafNodeType
Definition: LevelSetUtil.h:1159
openvdb::v3_2_0::tools::level_set_util_internal::NodeMaskSegment::Ptr
boost::shared_ptr< NodeMaskSegment > Ptr
Definition: LevelSetUtil.h:1277
openvdb
Definition: Exceptions.h:39
openvdb::v3_2_0::tools::level_set_util_internal::FindMinVoxelValue::FindMinVoxelValue
FindMinVoxelValue(LeafNodeType const *const *const leafnodes)
Definition: LevelSetUtil.h:397
openvdb::v3_2_0::tools::level_set_util_internal::GridOrTreeConstructor
Definition: LevelSetUtil.h:2086
openvdb::v3_2_0::tree::ValueAccessor::addTile
void addTile(Index level, const Coord &xyz, const ValueType &value, bool state)
Add a tile at the specified tree level that contains voxel (x, y, z), possibly deleting existing node...
Definition: ValueAccessor.h:382
openvdb::v3_2_0::tools::level_set_util_internal::FindMinVoxelValue::mNodes
LeafNodeType const *const *const mNodes
Definition: LevelSetUtil.h:422
openvdb::v3_2_0::tools::level_set_util_internal::MaskSegmentGroup::join
void join(MaskSegmentGroup &rhs)
Definition: LevelSetUtil.h:1577
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ValueType const mIsovalue
Definition: LevelSetUtil.h:244
openvdb::v3_2_0::tools::level_set_util_internal::SDFVoxelsToFogVolume::operator()
void operator()(const tbb::blocked_range< size_t > &range) const
Definition: LevelSetUtil.h:470
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bool isValueOn(const Coord &xyz) const
Return the active state of the voxel at the given coordinates.
Definition: ValueAccessor.h:263
openvdb::v3_2_0::tree::LeafNode::onVoxelCount
Index64 onVoxelCount() const
Return the number of voxels marked On.
Definition: LeafNode.h:440
openvdb::v3_2_0::tools::level_set_util_internal::FillMaskBoundary::FillMaskBoundary
FillMaskBoundary(const TreeType &tree, ValueType isovalue, const BoolTreeType &fillMask, const BoolLeafNodeType **fillNodes, BoolLeafNodeType **newNodes)
Definition: LevelSetUtil.h:530
openvdb::v3_2_0::tools::level_set_util_internal::MaskIsovalueCrossingVoxels::InputValueType
InputTreeType::ValueType InputValueType
Definition: LevelSetUtil.h:1158
openvdb::v3_2_0::tools::level_set_util_internal::FlipRegionSign::operator()
void operator()(const tbb::blocked_range< size_t > &range) const
Definition: LevelSetUtil.h:379
openvdb::v3_2_0::tools::level_set_util_internal::FindMinTileValue::operator()
void operator()(const tbb::blocked_range< size_t > &range)
Definition: LevelSetUtil.h:443
openvdb::v3_2_0::tools::level_set_util_internal::FindMinVoxelValue::join
void join(FindMinVoxelValue &rhs)
Definition: LevelSetUtil.h:418
openvdb::v3_2_0::tools::level_set_util_internal::ExpandLeafNodeRegion::LeafNodeType
TreeType::LeafNodeType LeafNodeType
Definition: LevelSetUtil.h:1603
openvdb::v3_2_0::tools::level_set_util_internal::FillMaskBoundary::BoolLeafNodeType
BoolTreeType::LeafNodeType BoolLeafNodeType
Definition: LevelSetUtil.h:528
openvdb::v3_2_0::tools::sdfInteriorMask
GridOrTreeType::template ValueConverter< bool >::Type::Ptr sdfInteriorMask(const GridOrTreeType &volume, typename GridOrTreeType::ValueType isovalue=lsutilGridZero< GridOrTreeType >())
Threaded method to construct a boolean mask that represents interior regions in a signed distance fie...
Definition: LevelSetUtil.h:2244
openvdb::v3_2_0::tools::traceExteriorBoundaries
void traceExteriorBoundaries(FloatTreeT &tree)
Traces the exterior voxel boundary of closed objects in the input volume tree. Exterior voxels are ma...
Definition: MeshToVolume.h:2994
openvdb::v3_2_0::tools::level_set_util_internal::FlipRegionSign::FlipRegionSign
FlipRegionSign(LeafNodeType **nodes)
Definition: LevelSetUtil.h:377
openvdb::v3_2_0::tools::level_set_util_internal::MaskSegmentGroup
Definition: LevelSetUtil.h:1557
openvdb::v3_2_0::tools::level_set_util_internal::ComputeActiveVoxelCount::mSegments
VolumePtrType *const mSegments
Definition: LevelSetUtil.h:2065
openvdb::v3_2_0::tools::level_set_util_internal::FindMinVoxelValue
Definition: LevelSetUtil.h:393
openvdb::v3_2_0::tree::ValueAccessor::touchLeaf
LeafNodeT * touchLeaf(const Coord &xyz)
Return a pointer to the leaf node that contains voxel (x, y, z). If no such node exists, create one, but preserve the values and active states of all voxels.
Definition: ValueAccessor.h:393
openvdb::v3_2_0::tools::level_set_util_internal::SegmentNodeMask
Definition: LevelSetUtil.h:1366
openvdb::v3_2_0::tools::level_set_util_internal::ExpandLeafNodeRegion::BoolLeafNodeType
BoolTreeType::LeafNodeType BoolLeafNodeType
Definition: LevelSetUtil.h:1607
openvdb::v3_2_0::tools::level_set_util_internal::ConnectNodeMaskSegments::NodeMaskSegmentVector
std::vector< NodeMaskSegmentTypePtr > NodeMaskSegmentVector
Definition: LevelSetUtil.h:1400
openvdb::v3_2_0::TreeAdapter::TreeType
_TreeType TreeType
Definition: Grid.h:900
openvdb::v3_2_0::tools::level_set_util_internal::PopulateTree::LeafNodeType
TreeType::LeafNodeType LeafNodeType
Definition: LevelSetUtil.h:279
openvdb::v3_2_0::tools::extractEnclosedRegion
GridOrTreeType::template ValueConverter< bool >::Type::Ptr extractEnclosedRegion(const GridOrTreeType &volume, typename GridOrTreeType::ValueType isovalue=lsutilGridZero< GridOrTreeType >(), const typename TreeAdapter< GridOrTreeType >::TreeType::template ValueConverter< bool >::Type *fillMask=NULL)
Extracts the interior regions of a signed distance field and topologically enclosed (watertight) regi...
Definition: LevelSetUtil.h:2258
openvdb::v3_2_0::tools::level_set_util_internal::MaskSegmentGroup::MaskSegmentGroup
MaskSegmentGroup(const std::vector< NodeMaskSegmentType *> &segments)
Definition: LevelSetUtil.h:1563
openvdb::v3_2_0::tools::level_set_util_internal::MaskIsovalueCrossingVoxels::operator()
void operator()(const tbb::blocked_range< size_t > &range)
Definition: LevelSetUtil.h:1185
openvdb::v3_2_0::tools::level_set_util_internal::LabelBoundaryVoxels
Negative active values are set 0, everything else is set to 1.
Definition: LevelSetUtil.h:327
openvdb::v3_2_0::tools::level_set_util_internal::GridOrTreeConstructor< Grid< TreeType > >::constructMask
static BoolGridPtrType constructMask(const GridType &grid, BoolTreePtrType &maskTree)
Definition: LevelSetUtil.h:2108
openvdb::v3_2_0::tools::level_set_util_internal::FindMinVoxelValue::operator()
void operator()(const tbb::blocked_range< size_t > &range)
Definition: LevelSetUtil.h:409
openvdb::v3_2_0::tools::level_set_util_internal::GridOrTreeConstructor< Grid< TreeType > >::construct
static GridTypePtr construct(const GridType &grid, TreeTypePtr &maskTree)
Definition: LevelSetUtil.h:2114
openvdb::v3_2_0::tools::level_set_util_internal::NodeMaskSegment::origin
Coord origin
Definition: LevelSetUtil.h:1284
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static TreeType & tree(TreeType &t)
Definition: Grid.h:915
openvdb::v3_2_0::tools::level_set_util_internal::ExpandLeafNodeRegion
Definition: LevelSetUtil.h:1600
openvdb::v3_2_0::tools::level_set_util_internal::nodeMaskSegmentation
void nodeMaskSegmentation(const NodeType &node, std::vector< typename NodeMaskSegment< NodeType >::Ptr > &segments)
Definition: LevelSetUtil.h:1291
openvdb::v3_2_0::tools::level_set_util_internal::FillMaskBoundary::ValueType
TreeType::ValueType ValueType
Definition: LevelSetUtil.h:525
openvdb::v3_2_0::tools::level_set_util_internal::ExpandLeafNodeRegion::ValueType
TreeType::ValueType ValueType
Definition: LevelSetUtil.h:1602
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Definition: LeafNode.h:1109
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MaskIsovalueCrossingVoxels(const InputTreeType &inputTree, const std::vector< const InputLeafNodeType *> &inputLeafNodes, BoolTreeType &maskTree, InputValueType iso)
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void setOff(Index32 n)
Set the nth bit off.
Definition: NodeMasks.h:454
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Definition: LevelSetUtil.h:461
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Definition: LevelSetUtil.h:1280
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Definition: LevelSetUtil.h:271
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Definition: LevelSetUtil.h:1560
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Return a reference to the tree associated with this accessor.
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Definition: LevelSetUtil.h:1285
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Definition: LevelSetUtil.h:388
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Definition: LevelSetUtil.h:1841
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Definition: LevelSetUtil.h:518
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Definition: LevelSetUtil.h:1956
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Definition: LevelSetUtil.h:490
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Definition: LevelSetUtil.h:1408
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Separates disjoint active topology components into distinct grids or trees.
Definition: LevelSetUtil.h:2455
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void operator()(const tbb::blocked_range< size_t > &range)
Definition: LevelSetUtil.h:1579
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Definition: LevelSetUtil.h:1835
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Definition: LevelSetUtil.h:403
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const LeafNodeT * probeConstLeaf(const Coord &xyz) const
Return a pointer to the leaf node that contains voxel (x, y, z), or NULL if no such node exists...
Definition: ValueAccessor.h:429
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Definition: LevelSetUtil.h:1369
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Definition: LevelSetUtil.h:1156
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Definition: LevelSetUtil.h:456
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BoolLeafNodeType **const mMaskNodes
Definition: LevelSetUtil.h:243
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Set the grid index coordinates of this node&#39;s local origin.
Definition: LeafNode.h:472
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GridOrTreeType::template ValueConverter< bool >::Type::Ptr extractIsosurfaceMask(const GridOrTreeType &volume, typename GridOrTreeType::ValueType isovalue)
Return a mask of the voxels that intersect the implicit surface with the given isovalue.
Definition: LevelSetUtil.h:2280
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Definition: LevelSetUtil.h:1896
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Definition: LevelSetUtil.h:204
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Container class that associates a tree with a transform and metadata.
Definition: Grid.h:54
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Definition: LevelSetUtil.h:1886
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Definition: LevelSetUtil.h:437
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Definition: LevelSetUtil.h:1389
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void operator()(const tbb::blocked_range< size_t > &range) const
Definition: LevelSetUtil.h:1378
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Definition: LevelSetUtil.h:1749
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Definition: LevelSetUtil.h:1176
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LeafNodeType::ValueType ValueType
Definition: LevelSetUtil.h:329
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Definition: LevelSetUtil.h:251
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Definition: LevelSetUtil.h:1370
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Definition: LevelSetUtil.h:1283
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size_t *const mCountArray
Definition: LevelSetUtil.h:2066
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Definition: LevelSetUtil.h:431
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const boost::disable_if_c< VecTraits< T >::IsVec, T >::type & min(const T &a, const T &b)
Definition: Composite.h:128