OpenVDB: openvdb/tools/Dense.h Source File

OpenVDB 9.1.0

Dense.h
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1// Copyright Contributors to the OpenVDB Project
2// SPDX-License-Identifier: MPL-2.0
3
4/// @file Dense.h
5///
6/// @brief This file defines a simple dense grid and efficient
7/// converters to and from VDB grids.
8
9#ifndef OPENVDB_TOOLS_DENSE_HAS_BEEN_INCLUDED
10#define OPENVDB_TOOLS_DENSE_HAS_BEEN_INCLUDED
11
12#include <openvdb/Types.h>
13#include <openvdb/Grid.h>
14#include <openvdb/tree/ValueAccessor.h>
15#include <openvdb/Exceptions.h>
16#include <openvdb/util/Formats.h>
17#include "Prune.h"
18#include <tbb/parallel_for.h>
19#include <iostream>
20#include <memory>
21#include <string>
22#include <utility> // for std::pair
23#include <vector>
24
25namespace openvdb {
26 OPENVDB_USE_VERSION_NAMESPACE
27namespace OPENVDB_VERSION_NAME {
28namespace tools {
29
30/// @brief Populate a dense grid with the values of voxels from a sparse grid,
31/// where the sparse grid intersects the dense grid.
32/// @param sparse an OpenVDB grid or tree from which to copy values
33/// @param dense the dense grid into which to copy values
34/// @param serial if false, process voxels in parallel
35template<typename DenseT, typename GridOrTreeT>
36void
37 copyToDense(
38 const GridOrTreeT& sparse,
39 DenseT& dense,
40 bool serial = false);
41
42
43/// @brief Populate a sparse grid with the values of all of the voxels of a dense grid.
44/// @param dense the dense grid from which to copy values
45/// @param sparse an OpenVDB grid or tree into which to copy values
46/// @param tolerance values in the dense grid that are within this tolerance of the sparse
47/// grid's background value become inactive background voxels or tiles in the sparse grid
48/// @param serial if false, process voxels in parallel
49template<typename DenseT, typename GridOrTreeT>
50void
51 copyFromDense(
52 const DenseT& dense,
53 GridOrTreeT& sparse,
54 const typename GridOrTreeT::ValueType& tolerance,
55 bool serial = false);
56
57
58////////////////////////////////////////
59
60/// We currently support the following two 3D memory layouts for dense
61/// volumes: XYZ, i.e. x is the fastest moving index, and ZYX, i.e. z
62/// is the fastest moving index. The ZYX memory layout leads to nested
63/// for-loops of the order x, y, z, which we find to be the most
64/// intuitive. Hence, ZYX is the layout used throughout VDB. However,
65/// other data structures, e.g. Houdini and Maya, employ the XYZ
66/// layout. Clearly a dense volume with the ZYX layout converts more
67/// efficiently to a VDB, but we support both for convenience.
68 enum MemoryLayout { LayoutXYZ, LayoutZYX };
69
70/// @brief Base class for Dense which is defined below.
71/// @note The constructor of this class is protected to prevent direct
72/// instantiation.
73 template<typename ValueT, MemoryLayout Layout> class DenseBase;
74
75/// @brief Partial template specialization of DenseBase.
76/// @note ZYX is the memory-layout in VDB. It leads to nested
77/// for-loops of the order x, y, z which we find to be the most intuitive.
78template<typename ValueT>
79 class DenseBase<ValueT, LayoutZYX>
80{
81public:
82 /// @brief Return the linear offset into this grid's value array given by
83 /// unsigned coordinates (i, j, k), i.e., coordinates relative to
84 /// the origin of this grid's bounding box.
85 ///
86 /// @warning The input coordinates are assume to be relative to
87 /// the grid's origin, i.e. minimum of its index bounding box!
88 inline size_t coordToOffset(size_t i, size_t j, size_t k) const { return i*mX + j*mY + k; }
89
90 /// @brief Return the local coordinate corresponding to the specified linear offset.
91 ///
92 /// @warning The returned coordinate is relative to the origin of this
93 /// grid's bounding box so add dense.origin() to get absolute coordinates.
94 inline Coord offsetToLocalCoord(size_t n) const
95 {
96 const size_t x = n / mX;
97 n -= mX*x;
98 const size_t y = n / mY;
99 return Coord(Coord::ValueType(x), Coord::ValueType(y), Coord::ValueType(n - mY*y));
100 }
101
102 /// @brief Return the stride of the array in the x direction ( = dimY*dimZ).
103 /// @note This method is required by both CopyToDense and CopyFromDense.
104 inline size_t xStride() const { return mX; }
105
106 /// @brief Return the stride of the array in the y direction ( = dimZ).
107 /// @note This method is required by both CopyToDense and CopyFromDense.
108 inline size_t yStride() const { return mY; }
109
110 /// @brief Return the stride of the array in the z direction ( = 1).
111 /// @note This method is required by both CopyToDense and CopyFromDense.
112 static size_t zStride() { return 1; }
113
114protected:
115 /// Protected constructor so as to prevent direct instantiation
116 DenseBase(const CoordBBox& bbox) : mBBox(bbox), mY(bbox.dim()[2]), mX(mY*bbox.dim()[1]) {}
117
118 const CoordBBox mBBox;//signed coordinates of the domain represented by the grid
119 const size_t mY, mX;//strides in the y and x direction
120};// end of DenseBase<ValueT, LayoutZYX>
121
122/// @brief Partial template specialization of DenseBase.
123/// @note This is the memory-layout employed in Houdini and Maya. It leads
124/// to nested for-loops of the order z, y, x.
125template<typename ValueT>
126 class DenseBase<ValueT, LayoutXYZ>
127{
128public:
129 /// @brief Return the linear offset into this grid's value array given by
130 /// unsigned coordinates (i, j, k), i.e., coordinates relative to
131 /// the origin of this grid's bounding box.
132 ///
133 /// @warning The input coordinates are assume to be relative to
134 /// the grid's origin, i.e. minimum of its index bounding box!
135 inline size_t coordToOffset(size_t i, size_t j, size_t k) const { return i + j*mY + k*mZ; }
136
137 /// @brief Return the index coordinate corresponding to the specified linear offset.
138 ///
139 /// @warning The returned coordinate is relative to the origin of this
140 /// grid's bounding box so add dense.origin() to get absolute coordinates.
141 inline Coord offsetToLocalCoord(size_t n) const
142 {
143 const size_t z = n / mZ;
144 n -= mZ*z;
145 const size_t y = n / mY;
146 return Coord(Coord::ValueType(n - mY*y), Coord::ValueType(y), Coord::ValueType(z));
147 }
148
149 /// @brief Return the stride of the array in the x direction ( = 1).
150 /// @note This method is required by both CopyToDense and CopyFromDense.
151 static size_t xStride() { return 1; }
152
153 /// @brief Return the stride of the array in the y direction ( = dimX).
154 /// @note This method is required by both CopyToDense and CopyFromDense.
155 inline size_t yStride() const { return mY; }
156
157 /// @brief Return the stride of the array in the y direction ( = dimX*dimY).
158 /// @note This method is required by both CopyToDense and CopyFromDense.
159 inline size_t zStride() const { return mZ; }
160
161protected:
162 /// Protected constructor so as to prevent direct instantiation
163 DenseBase(const CoordBBox& bbox) : mBBox(bbox), mY(bbox.dim()[0]), mZ(mY*bbox.dim()[1]) {}
164
165 const CoordBBox mBBox;//signed coordinates of the domain represented by the grid
166 const size_t mY, mZ;//strides in the y and z direction
167};// end of DenseBase<ValueT, LayoutXYZ>
168
169/// @brief Dense is a simple dense grid API used by the CopyToDense and
170/// CopyFromDense classes defined below.
171/// @details Use the Dense class to efficiently produce a dense in-memory
172/// representation of an OpenVDB grid. However, be aware that a dense grid
173/// could have a memory footprint that is orders of magnitude larger than
174/// the sparse grid from which it originates.
175///
176/// @note This class can be used as a simple wrapper for existing dense grid
177/// classes if they provide access to the raw data array.
178/// @note This implementation allows for the 3D memory layout to be
179/// defined by the MemoryLayout template parameter (see above for definition).
180/// The default memory layout is ZYX since that's the layout used by OpenVDB grids.
181template<typename ValueT, MemoryLayout Layout = LayoutZYX>
182 class Dense : public DenseBase<ValueT, Layout>
183{
184public:
185 using ValueType = ValueT;
186 using BaseT = DenseBase<ValueT, Layout>;
187 using Ptr = SharedPtr<Dense>;
188 using ConstPtr = SharedPtr<const Dense>;
189
190 /// @brief Construct a dense grid with a given range of coordinates.
191 ///
192 /// @param bbox the bounding box of the (signed) coordinate range of this grid
193 /// @throw ValueError if the bounding box is empty.
194 /// @note The min and max coordinates of the bounding box are inclusive.
195 Dense(const CoordBBox& bbox) : BaseT(bbox) { this->init(); }
196
197 /// @brief Construct a dense grid with a given range of coordinates and initial value
198 ///
199 /// @param bbox the bounding box of the (signed) coordinate range of this grid
200 /// @param value the initial value of the grid.
201 /// @throw ValueError if the bounding box is empty.
202 /// @note The min and max coordinates of the bounding box are inclusive.
203 Dense(const CoordBBox& bbox, const ValueT& value) : BaseT(bbox)
204 {
205 this->init();
206 this->fill(value);
207 }
208
209 /// @brief Construct a dense grid that wraps an external array.
210 ///
211 /// @param bbox the bounding box of the (signed) coordinate range of this grid
212 /// @param data a raw C-style array whose size is commensurate with
213 /// the coordinate domain of @a bbox
214 ///
215 /// @note The data array is assumed to have a stride of one in the @e z direction.
216 /// @throw ValueError if the bounding box is empty.
217 /// @note The min and max coordinates of the bounding box are inclusive.
218 Dense(const CoordBBox& bbox, ValueT* data) : BaseT(bbox), mData(data)
219 {
220 if (BaseT::mBBox.empty()) {
221 OPENVDB_THROW(ValueError, "can't construct a dense grid with an empty bounding box");
222 }
223 }
224
225 /// @brief Construct a dense grid with a given origin and dimensions.
226 ///
227 /// @param dim the desired dimensions of the grid
228 /// @param min the signed coordinates of the first voxel in the dense grid
229 /// @throw ValueError if any of the dimensions are zero.
230 /// @note The @a min coordinate is inclusive, and the max coordinate will be
231 /// @a min + @a dim - 1.
232 Dense(const Coord& dim, const Coord& min = Coord(0))
233 : BaseT(CoordBBox(min, min+dim.offsetBy(-1)))
234 {
235 this->init();
236 }
237
238 /// @brief Return the memory layout for this grid (see above for definitions).
239 static MemoryLayout memoryLayout() { return Layout; }
240
241 /// @brief Return a raw pointer to this grid's value array.
242 /// @note This method is required by CopyToDense.
243 inline ValueT* data() { return mData; }
244
245 /// @brief Return a raw pointer to this grid's value array.
246 /// @note This method is required by CopyFromDense.
247 inline const ValueT* data() const { return mData; }
248
249 /// @brief Return the bounding box of the signed index domain of this grid.
250 /// @note This method is required by both CopyToDense and CopyFromDense.
251 inline const CoordBBox& bbox() const { return BaseT::mBBox; }
252
253 /// Return the grid's origin in index coordinates.
254 inline const Coord& origin() const { return BaseT::mBBox.min(); }
255
256 /// @brief Return the number of voxels contained in this grid.
257 inline Index64 valueCount() const { return BaseT::mBBox.volume(); }
258
259 /// @brief Set the value of the voxel at the given array offset.
260 inline void setValue(size_t offset, const ValueT& value) { mData[offset] = value; }
261
262 /// @brief Return a const reference to the value of the voxel at the given array offset.
263 const ValueT& getValue(size_t offset) const { return mData[offset]; }
264
265 /// @brief Return a non-const reference to the value of the voxel at the given array offset.
266 ValueT& getValue(size_t offset) { return mData[offset]; }
267
268 /// @brief Set the value of the voxel at unsigned index coordinates (i, j, k).
269 /// @note This is somewhat slower than using an array offset.
270 inline void setValue(size_t i, size_t j, size_t k, const ValueT& value)
271 {
272 mData[BaseT::coordToOffset(i,j,k)] = value;
273 }
274
275 /// @brief Return a const reference to the value of the voxel
276 /// at unsigned index coordinates (i, j, k).
277 /// @note This is somewhat slower than using an array offset.
278 inline const ValueT& getValue(size_t i, size_t j, size_t k) const
279 {
280 return mData[BaseT::coordToOffset(i,j,k)];
281 }
282
283 /// @brief Return a non-const reference to the value of the voxel
284 /// at unsigned index coordinates (i, j, k).
285 /// @note This is somewhat slower than using an array offset.
286 inline ValueT& getValue(size_t i, size_t j, size_t k)
287 {
288 return mData[BaseT::coordToOffset(i,j,k)];
289 }
290
291 /// @brief Set the value of the voxel at the given signed coordinates.
292 /// @note This is slower than using either an array offset or unsigned index coordinates.
293 inline void setValue(const Coord& xyz, const ValueT& value)
294 {
295 mData[this->coordToOffset(xyz)] = value;
296 }
297
298 /// @brief Return a const reference to the value of the voxel at the given signed coordinates.
299 /// @note This is slower than using either an array offset or unsigned index coordinates.
300 inline const ValueT& getValue(const Coord& xyz) const
301 {
302 return mData[this->coordToOffset(xyz)];
303 }
304
305 /// @brief Return a non-const reference to the value of the voxel
306 /// at the given signed coordinates.
307 /// @note This is slower than using either an array offset or unsigned index coordinates.
308 inline ValueT& getValue(const Coord& xyz)
309 {
310 return mData[this->coordToOffset(xyz)];
311 }
312
313 /// @brief Fill this grid with a constant value.
314 inline void fill(const ValueT& value)
315 {
316 size_t size = this->valueCount();
317 ValueT* a = mData;
318 while(size--) *a++ = value;
319 }
320
321 /// @brief Return the linear offset into this grid's value array given by
322 /// the specified signed coordinates, i.e., coordinates in the space of
323 /// this grid's bounding box.
324 ///
325 /// @note This method reflects the fact that we assume the same
326 /// layout of values as an OpenVDB grid, i.e., the fastest coordinate is @e z.
327 inline size_t coordToOffset(const Coord& xyz) const
328 {
329 assert(BaseT::mBBox.isInside(xyz));
330 return BaseT::coordToOffset(size_t(xyz[0]-BaseT::mBBox.min()[0]),
331 size_t(xyz[1]-BaseT::mBBox.min()[1]),
332 size_t(xyz[2]-BaseT::mBBox.min()[2]));
333 }
334
335 /// @brief Return the global coordinate corresponding to the specified linear offset.
336 inline Coord offsetToCoord(size_t n) const
337 {
338 return this->offsetToLocalCoord(n) + BaseT::mBBox.min();
339 }
340
341 /// @brief Return the memory footprint of this Dense grid in bytes.
342 inline Index64 memUsage() const
343 {
344 return sizeof(*this) + BaseT::mBBox.volume() * sizeof(ValueType);
345 }
346
347 /// @brief Output a human-readable description of this grid to the
348 /// specified stream.
349 void print(const std::string& name = "", std::ostream& os = std::cout) const
350 {
351 const Coord dim = BaseT::mBBox.dim();
352 os << "Dense Grid";
353 if (!name.empty()) os << " \"" << name << "\"";
354 util::printBytes(os, this->memUsage(), ":\n Memory footprint: ");
355 os << " Dimensions of grid : " << dim[0] << " x " << dim[1] << " x " << dim[2] << "\n";
356 os << " Number of voxels: " << util::formattedInt(this->valueCount()) << "\n";
357 os << " Bounding box of voxels: " << BaseT::mBBox << "\n";
358 os << " Memory layout: " << (Layout == LayoutZYX ? "ZYX (" : "XYZ (dis")
359 << "similar to VDB)\n";
360 }
361
362private:
363 /// @brief Private method to initialize the dense value array.
364 void init()
365 {
366 if (BaseT::mBBox.empty()) {
367 OPENVDB_THROW(ValueError, "can't construct a dense grid with an empty bounding box");
368 }
369 mArray.reset(new ValueT[BaseT::mBBox.volume()]);
370 mData = mArray.get();
371 }
372
373 std::unique_ptr<ValueT[]> mArray;
374 ValueT* mData;//raw c-style pointer to values
375};// end of Dense
376
377////////////////////////////////////////
378
379
380/// @brief Copy an OpenVDB tree into an existing dense grid.
381///
382/// @note Only voxels that intersect the dense grid's bounding box are copied
383/// from the OpenVDB tree. But both active and inactive voxels are copied,
384/// so all existing values in the dense grid are overwritten, regardless of
385/// the OpenVDB tree's topology.
386template<typename _TreeT, typename _DenseT = Dense<typename _TreeT::ValueType> >
387 class CopyToDense
388{
389public:
390 using DenseT = _DenseT;
391 using TreeT = _TreeT;
392 using ValueT = typename TreeT::ValueType;
393
394 CopyToDense(const TreeT& tree, DenseT& dense)
395 : mRoot(&(tree.root())), mDense(&dense) {}
396
397 void copy(bool serial = false) const
398 {
399 if (serial) {
400 mRoot->copyToDense(mDense->bbox(), *mDense);
401 } else {
402 tbb::parallel_for(mDense->bbox(), *this);
403 }
404 }
405
406 /// @brief Public method called by tbb::parallel_for
407 void operator()(const CoordBBox& bbox) const
408 {
409 mRoot->copyToDense(bbox, *mDense);
410 }
411
412private:
413 const typename TreeT::RootNodeType* mRoot;
414 DenseT* mDense;
415};// CopyToDense
416
417
418// Convenient wrapper function for the CopyToDense class
419template<typename DenseT, typename GridOrTreeT>
420void
421copyToDense(const GridOrTreeT& sparse, DenseT& dense, bool serial)
422{
423 using Adapter = TreeAdapter<GridOrTreeT>;
424 using TreeT = typename Adapter::TreeType;
425
426 CopyToDense<TreeT, DenseT> op(Adapter::constTree(sparse), dense);
427 op.copy(serial);
428}
429
430
431////////////////////////////////////////
432
433
434/// @brief Copy the values from a dense grid into an OpenVDB tree.
435///
436/// @details Values in the dense grid that are within a tolerance of
437/// the background value are truncated to inactive background voxels or tiles.
438/// This allows the tree to form a sparse representation of the dense grid.
439///
440/// @note Since this class allocates leaf nodes concurrently it is recommended
441/// to use a scalable implementation of @c new like the one provided by TBB,
442/// rather than the mutex-protected standard library @c new.
443template<typename _TreeT, typename _DenseT = Dense<typename _TreeT::ValueType> >
444 class CopyFromDense
445{
446public:
447 using DenseT = _DenseT;
448 using TreeT = _TreeT;
449 using ValueT = typename TreeT::ValueType;
450 using LeafT = typename TreeT::LeafNodeType;
451 using AccessorT = tree::ValueAccessor<TreeT>;
452
453 CopyFromDense(const DenseT& dense, TreeT& tree, const ValueT& tolerance)
454 : mDense(&dense),
455 mTree(&tree),
456 mBlocks(nullptr),
457 mTolerance(tolerance),
458 mAccessor(tree.empty() ? nullptr : new AccessorT(tree))
459 {
460 }
461 CopyFromDense(const CopyFromDense& other)
462 : mDense(other.mDense),
463 mTree(other.mTree),
464 mBlocks(other.mBlocks),
465 mTolerance(other.mTolerance),
466 mAccessor(other.mAccessor.get() == nullptr ? nullptr : new AccessorT(*mTree))
467 {
468 }
469
470 /// @brief Copy values from the dense grid to the sparse tree.
471 void copy(bool serial = false)
472 {
473 mBlocks = new std::vector<Block>();
474 const CoordBBox& bbox = mDense->bbox();
475 // Pre-process: Construct a list of blocks aligned with (potential) leaf nodes
476 for (CoordBBox sub=bbox; sub.min()[0] <= bbox.max()[0]; sub.min()[0] = sub.max()[0] + 1) {
477 for (sub.min()[1] = bbox.min()[1]; sub.min()[1] <= bbox.max()[1];
478 sub.min()[1] = sub.max()[1] + 1)
479 {
480 for (sub.min()[2] = bbox.min()[2]; sub.min()[2] <= bbox.max()[2];
481 sub.min()[2] = sub.max()[2] + 1)
482 {
483 sub.max() = Coord::minComponent(bbox.max(),
484 (sub.min()&(~(LeafT::DIM-1u))).offsetBy(LeafT::DIM-1u));
485 mBlocks->push_back(Block(sub));
486 }
487 }
488 }
489
490 // Multi-threaded process: Convert dense grid into leaf nodes and tiles
491 if (serial) {
492 (*this)(tbb::blocked_range<size_t>(0, mBlocks->size()));
493 } else {
494 tbb::parallel_for(tbb::blocked_range<size_t>(0, mBlocks->size()), *this);
495 }
496
497 // Post-process: Insert leaf nodes and tiles into the tree, and prune the tiles only!
498 tree::ValueAccessor<TreeT> acc(*mTree);
499 for (size_t m=0, size = mBlocks->size(); m<size; ++m) {
500 Block& block = (*mBlocks)[m];
501 if (block.leaf) {
502 acc.addLeaf(block.leaf);
503 } else if (block.tile.second) {//only background tiles are inactive
504 acc.addTile(1, block.bbox.min(), block.tile.first, true);//leaf tile
505 }
506 }
507 delete mBlocks;
508 mBlocks = nullptr;
509
510 tools::pruneTiles(*mTree, mTolerance);//multi-threaded
511 }
512
513 /// @brief Public method called by tbb::parallel_for
514 /// @warning Never call this method directly!
515 void operator()(const tbb::blocked_range<size_t> &r) const
516 {
517 assert(mBlocks);
518 LeafT* leaf = new LeafT();
519
520 for (size_t m=r.begin(), n=0, end = r.end(); m != end; ++m, ++n) {
521
522 Block& block = (*mBlocks)[m];
523 const CoordBBox &bbox = block.bbox;
524
525 if (mAccessor.get() == nullptr) {//i.e. empty target tree
526 leaf->fill(mTree->background(), false);
527 } else {//account for existing leaf nodes in the target tree
528 if (const LeafT* target = mAccessor->probeConstLeaf(bbox.min())) {
529 (*leaf) = (*target);
530 } else {
531 ValueT value = zeroVal<ValueT>();
532 bool state = mAccessor->probeValue(bbox.min(), value);
533 leaf->fill(value, state);
534 }
535 }
536
537 leaf->copyFromDense(bbox, *mDense, mTree->background(), mTolerance);
538
539 if (!leaf->isConstant(block.tile.first, block.tile.second, mTolerance)) {
540 leaf->setOrigin(bbox.min() & (~(LeafT::DIM - 1)));
541 block.leaf = leaf;
542 leaf = new LeafT();
543 }
544 }// loop over blocks
545
546 delete leaf;
547 }
548
549private:
550 struct Block {
551 CoordBBox bbox;
552 LeafT* leaf;
553 std::pair<ValueT, bool> tile;
554 Block(const CoordBBox& b) : bbox(b), leaf(nullptr) {}
555 };
556
557 const DenseT* mDense;
558 TreeT* mTree;
559 std::vector<Block>* mBlocks;
560 ValueT mTolerance;
561 std::unique_ptr<AccessorT> mAccessor;
562};// CopyFromDense
563
564
565// Convenient wrapper function for the CopyFromDense class
566template<typename DenseT, typename GridOrTreeT>
567void
568copyFromDense(const DenseT& dense, GridOrTreeT& sparse,
569 const typename GridOrTreeT::ValueType& tolerance, bool serial)
570{
571 using Adapter = TreeAdapter<GridOrTreeT>;
572 using TreeT = typename Adapter::TreeType;
573
574 CopyFromDense<TreeT, DenseT> op(dense, Adapter::tree(sparse), tolerance);
575 op.copy(serial);
576}
577
578} // namespace tools
579} // namespace OPENVDB_VERSION_NAME
580} // namespace openvdb
581
582#endif // OPENVDB_TOOLS_DENSE_HAS_BEEN_INCLUDED
Formats.h
Utility routines to output nicely-formatted numeric values.
value
ValueT value
Definition: GridBuilder.h:1287
Grid.h
Prune.h
Defined various multi-threaded utility functions for trees.
ValueAccessor.h
openvdb::v9_1::ValueError
Definition: Exceptions.h:65
openvdb::v9_1::math::CoordBBox
Axis-aligned bounding box of signed integer coordinates.
Definition: Coord.h:249
openvdb::v9_1::math::CoordBBox::min
const Coord & min() const
Definition: Coord.h:321
openvdb::v9_1::math::CoordBBox::max
const Coord & max() const
Definition: Coord.h:322
openvdb::v9_1::math::Coord
Signed (x, y, z) 32-bit integer coordinates.
Definition: Coord.h:25
openvdb::v9_1::math::Coord::ValueType
Int32 ValueType
Definition: Coord.h:32
openvdb::v9_1::math::Coord::offsetBy
Coord offsetBy(Int32 dx, Int32 dy, Int32 dz) const
Definition: Coord.h:91
openvdb::v9_1::math::Coord::minComponent
void minComponent(const Coord &other)
Perform a component-wise minimum with the other Coord.
Definition: Coord.h:175
openvdb::v9_1::math::Coord::min
static Coord min()
Return the smallest possible coordinate.
Definition: Coord.h:43
openvdb::v9_1::math::Coord::max
static Coord max()
Return the largest possible coordinate.
Definition: Coord.h:46
openvdb::v9_1::tools::CopyFromDense
Copy the values from a dense grid into an OpenVDB tree.
Definition: Dense.h:445
openvdb::v9_1::tools::CopyFromDense::CopyFromDense
CopyFromDense(const DenseT &dense, TreeT &tree, const ValueT &tolerance)
Definition: Dense.h:453
openvdb::v9_1::tools::CopyFromDense::copy
void copy(bool serial=false)
Copy values from the dense grid to the sparse tree.
Definition: Dense.h:471
openvdb::v9_1::tools::CopyFromDense::LeafT
typename TreeT::LeafNodeType LeafT
Definition: Dense.h:450
openvdb::v9_1::tools::CopyFromDense::CopyFromDense
CopyFromDense(const CopyFromDense &other)
Definition: Dense.h:461
openvdb::v9_1::tools::CopyFromDense::operator()
void operator()(const tbb::blocked_range< size_t > &r) const
Public method called by tbb::parallel_for.
Definition: Dense.h:515
openvdb::v9_1::tools::CopyFromDense::ValueT
typename TreeT::ValueType ValueT
Definition: Dense.h:449
openvdb::v9_1::tools::CopyFromDense::TreeT
_TreeT TreeT
Definition: Dense.h:448
openvdb::v9_1::tools::CopyFromDense::DenseT
_DenseT DenseT
Definition: Dense.h:447
openvdb::v9_1::tools::CopyToDense
Copy an OpenVDB tree into an existing dense grid.
Definition: Dense.h:388
openvdb::v9_1::tools::CopyToDense::copy
void copy(bool serial=false) const
Definition: Dense.h:397
openvdb::v9_1::tools::CopyToDense::CopyToDense
CopyToDense(const TreeT &tree, DenseT &dense)
Definition: Dense.h:394
openvdb::v9_1::tools::CopyToDense::operator()
void operator()(const CoordBBox &bbox) const
Public method called by tbb::parallel_for.
Definition: Dense.h:407
openvdb::v9_1::tools::CopyToDense::ValueT
typename TreeT::ValueType ValueT
Definition: Dense.h:392
openvdb::v9_1::tools::CopyToDense::TreeT
_TreeT TreeT
Definition: Dense.h:391
openvdb::v9_1::tools::CopyToDense::DenseT
_DenseT DenseT
Definition: Dense.h:390
openvdb::v9_1::tools::DenseBase< ValueT, LayoutXYZ >::coordToOffset
size_t coordToOffset(size_t i, size_t j, size_t k) const
Return the linear offset into this grid's value array given by unsigned coordinates (i,...
Definition: Dense.h:135
openvdb::v9_1::tools::DenseBase< ValueT, LayoutXYZ >::offsetToLocalCoord
Coord offsetToLocalCoord(size_t n) const
Return the index coordinate corresponding to the specified linear offset.
Definition: Dense.h:141
openvdb::v9_1::tools::DenseBase< ValueT, LayoutXYZ >::DenseBase
DenseBase(const CoordBBox &bbox)
Protected constructor so as to prevent direct instantiation.
Definition: Dense.h:163
openvdb::v9_1::tools::DenseBase< ValueT, LayoutXYZ >::mBBox
const CoordBBox mBBox
Definition: Dense.h:165
openvdb::v9_1::tools::DenseBase< ValueT, LayoutXYZ >::zStride
size_t zStride() const
Return the stride of the array in the y direction ( = dimX*dimY).
Definition: Dense.h:159
openvdb::v9_1::tools::DenseBase< ValueT, LayoutXYZ >::xStride
static size_t xStride()
Return the stride of the array in the x direction ( = 1).
Definition: Dense.h:151
openvdb::v9_1::tools::DenseBase< ValueT, LayoutXYZ >::yStride
size_t yStride() const
Return the stride of the array in the y direction ( = dimX).
Definition: Dense.h:155
openvdb::v9_1::tools::DenseBase< ValueT, LayoutXYZ >::mY
const size_t mY
Definition: Dense.h:166
openvdb::v9_1::tools::DenseBase< ValueT, LayoutZYX >::coordToOffset
size_t coordToOffset(size_t i, size_t j, size_t k) const
Return the linear offset into this grid's value array given by unsigned coordinates (i,...
Definition: Dense.h:88
openvdb::v9_1::tools::DenseBase< ValueT, LayoutZYX >::offsetToLocalCoord
Coord offsetToLocalCoord(size_t n) const
Return the local coordinate corresponding to the specified linear offset.
Definition: Dense.h:94
openvdb::v9_1::tools::DenseBase< ValueT, LayoutZYX >::DenseBase
DenseBase(const CoordBBox &bbox)
Protected constructor so as to prevent direct instantiation.
Definition: Dense.h:116
openvdb::v9_1::tools::DenseBase< ValueT, LayoutZYX >::mBBox
const CoordBBox mBBox
Definition: Dense.h:118
openvdb::v9_1::tools::DenseBase< ValueT, LayoutZYX >::zStride
static size_t zStride()
Return the stride of the array in the z direction ( = 1).
Definition: Dense.h:112
openvdb::v9_1::tools::DenseBase< ValueT, LayoutZYX >::yStride
size_t yStride() const
Return the stride of the array in the y direction ( = dimZ).
Definition: Dense.h:108
openvdb::v9_1::tools::DenseBase< ValueT, LayoutZYX >::mX
const size_t mX
Definition: Dense.h:119
openvdb::v9_1::tools::DenseBase< ValueT, LayoutZYX >::xStride
size_t xStride() const
Return the stride of the array in the x direction ( = dimY*dimZ).
Definition: Dense.h:104
openvdb::v9_1::tools::DenseBase
Base class for Dense which is defined below.
Definition: Dense.h:73
openvdb::v9_1::tools::Dense
Dense is a simple dense grid API used by the CopyToDense and CopyFromDense classes defined below.
Definition: Dense.h:183
openvdb::v9_1::tools::Dense::Dense
Dense(const Coord &dim, const Coord &min=Coord(0))
Construct a dense grid with a given origin and dimensions.
Definition: Dense.h:232
openvdb::v9_1::tools::Dense::getValue
const ValueT & getValue(const Coord &xyz) const
Return a const reference to the value of the voxel at the given signed coordinates.
Definition: Dense.h:300
openvdb::v9_1::tools::Dense::Dense
Dense(const CoordBBox &bbox, const ValueT &value)
Construct a dense grid with a given range of coordinates and initial value.
Definition: Dense.h:203
openvdb::v9_1::tools::Dense::Ptr
SharedPtr< Dense > Ptr
Definition: Dense.h:187
openvdb::v9_1::tools::Dense::getValue
ValueT & getValue(const Coord &xyz)
Return a non-const reference to the value of the voxel at the given signed coordinates.
Definition: Dense.h:308
openvdb::v9_1::tools::Dense::origin
const Coord & origin() const
Return the grid's origin in index coordinates.
Definition: Dense.h:254
openvdb::v9_1::tools::Dense::valueCount
Index64 valueCount() const
Return the number of voxels contained in this grid.
Definition: Dense.h:257
openvdb::v9_1::tools::Dense::Dense
Dense(const CoordBBox &bbox)
Construct a dense grid with a given range of coordinates.
Definition: Dense.h:195
openvdb::v9_1::tools::Dense::Dense
Dense(const CoordBBox &bbox, ValueT *data)
Construct a dense grid that wraps an external array.
Definition: Dense.h:218
openvdb::v9_1::tools::Dense::getValue
const ValueT & getValue(size_t offset) const
Return a const reference to the value of the voxel at the given array offset.
Definition: Dense.h:263
openvdb::v9_1::tools::Dense::ValueType
ValueT ValueType
Definition: Dense.h:185
openvdb::v9_1::tools::Dense::fill
void fill(const ValueT &value)
Fill this grid with a constant value.
Definition: Dense.h:314
openvdb::v9_1::tools::Dense::setValue
void setValue(size_t offset, const ValueT &value)
Set the value of the voxel at the given array offset.
Definition: Dense.h:260
openvdb::v9_1::tools::Dense::setValue
void setValue(const Coord &xyz, const ValueT &value)
Set the value of the voxel at the given signed coordinates.
Definition: Dense.h:293
openvdb::v9_1::tools::Dense::data
const ValueT * data() const
Return a raw pointer to this grid's value array.
Definition: Dense.h:247
openvdb::v9_1::tools::Dense::getValue
ValueT & getValue(size_t i, size_t j, size_t k)
Return a non-const reference to the value of the voxel at unsigned index coordinates (i,...
Definition: Dense.h:286
openvdb::v9_1::tools::Dense::memoryLayout
static MemoryLayout memoryLayout()
Return the memory layout for this grid (see above for definitions).
Definition: Dense.h:239
openvdb::v9_1::tools::Dense::setValue
void setValue(size_t i, size_t j, size_t k, const ValueT &value)
Set the value of the voxel at unsigned index coordinates (i, j, k).
Definition: Dense.h:270
openvdb::v9_1::tools::Dense::data
ValueT * data()
Return a raw pointer to this grid's value array.
Definition: Dense.h:243
openvdb::v9_1::tools::Dense::getValue
const ValueT & getValue(size_t i, size_t j, size_t k) const
Return a const reference to the value of the voxel at unsigned index coordinates (i,...
Definition: Dense.h:278
openvdb::v9_1::tools::Dense::ConstPtr
SharedPtr< const Dense > ConstPtr
Definition: Dense.h:188
openvdb::v9_1::tools::Dense::getValue
ValueT & getValue(size_t offset)
Return a non-const reference to the value of the voxel at the given array offset.
Definition: Dense.h:266
openvdb::v9_1::tools::Dense::bbox
const CoordBBox & bbox() const
Return the bounding box of the signed index domain of this grid.
Definition: Dense.h:251
openvdb::v9_1::tools::Dense::memUsage
Index64 memUsage() const
Return the memory footprint of this Dense grid in bytes.
Definition: Dense.h:342
openvdb::v9_1::tools::Dense::print
void print(const std::string &name="", std::ostream &os=std::cout) const
Output a human-readable description of this grid to the specified stream.
Definition: Dense.h:349
openvdb::v9_1::tools::Dense::offsetToCoord
Coord offsetToCoord(size_t n) const
Return the global coordinate corresponding to the specified linear offset.
Definition: Dense.h:336
openvdb::v9_1::tools::Dense::coordToOffset
size_t coordToOffset(const Coord &xyz) const
Return the linear offset into this grid's value array given by the specified signed coordinates,...
Definition: Dense.h:327
openvdb::v9_1::tree::ValueAccessor< TreeT >
openvdb::v9_1::tree::ValueAccessor::addLeaf
void addLeaf(LeafNodeT *leaf)
Add the specified leaf to this tree, possibly creating a child branch in the process....
Definition: ValueAccessor.h:329
openvdb::v9_1::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:337
openvdb::v9_1::tools::composite::min
const std::enable_if<!VecTraits< T >::IsVec, T >::type & min(const T &a, const T &b)
Definition: Composite.h:103
openvdb::v9_1::tools::copyFromDense
void copyFromDense(const DenseT &dense, GridOrTreeT &sparse, const typename GridOrTreeT::ValueType &tolerance, bool serial=false)
Populate a sparse grid with the values of all of the voxels of a dense grid.
Definition: Dense.h:568
openvdb::v9_1::tools::MemoryLayout
MemoryLayout
Definition: Dense.h:68
openvdb::v9_1::tools::LayoutXYZ
@ LayoutXYZ
Definition: Dense.h:68
openvdb::v9_1::tools::LayoutZYX
@ LayoutZYX
Definition: Dense.h:68
openvdb::v9_1::tools::pruneTiles
void pruneTiles(TreeT &tree, typename TreeT::ValueType tolerance=zeroVal< typename TreeT::ValueType >(), bool threaded=true, size_t grainSize=1)
Reduce the memory footprint of a tree by replacing with tiles any non-leaf nodes whose values are all...
Definition: Prune.h:345
openvdb::v9_1::tools::copyToDense
void copyToDense(const GridOrTreeT &sparse, DenseT &dense, bool serial=false)
Populate a dense grid with the values of voxels from a sparse grid, where the sparse grid intersects ...
Definition: Dense.h:421
openvdb::v9_1::tools::memUsage
Index64 memUsage(const TreeT &tree, bool threaded=true)
Return the total amount of memory in bytes occupied by this tree.
Definition: Count.h:493
openvdb::v9_1::util::formattedInt
FormattedInt< IntT > formattedInt(IntT n)
Definition: Formats.h:118
openvdb::v9_1::util::printBytes
OPENVDB_API int printBytes(std::ostream &os, uint64_t bytes, const std::string &head="", const std::string &tail="\n", bool exact=false, int width=8, int precision=3)
openvdb::v9_1::Index64
uint64_t Index64
Definition: Types.h:53
openvdb::v9_1::SharedPtr
std::shared_ptr< T > SharedPtr
Definition: Types.h:114
openvdb
Definition: Exceptions.h:13
Exceptions.h
OPENVDB_THROW
#define OPENVDB_THROW(exception, message)
Definition: Exceptions.h:74
Types.h
openvdb::v9_1::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:1065
OPENVDB_VERSION_NAME
#define OPENVDB_VERSION_NAME
The version namespace name for this library version.
Definition: version.h.in:116
OPENVDB_USE_VERSION_NAMESPACE
#define OPENVDB_USE_VERSION_NAMESPACE
Definition: version.h.in:202