OpenVDB 11.0.0

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GridTransformer.h
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1// Copyright Contributors to the OpenVDB Project
2// SPDX-License-Identifier: MPL-2.0
3
4/// @file GridTransformer.h
5/// @author Peter Cucka
6
7#ifndef OPENVDB_TOOLS_GRIDTRANSFORMER_HAS_BEEN_INCLUDED
8#define OPENVDB_TOOLS_GRIDTRANSFORMER_HAS_BEEN_INCLUDED
9
10#include <openvdb/Grid.h>
11#include <openvdb/Types.h>
12#include <openvdb/math/Math.h> // for isApproxEqual()
13#include <openvdb/util/NullInterrupter.h>
14#include "ChangeBackground.h"
15#include "Interpolation.h"
16#include "LevelSetRebuild.h" // for doLevelSetRebuild()
17#include "SignedFloodFill.h" // for signedFloodFill
18#include "Prune.h" // for pruneLevelSet
19#include <openvdb/openvdb.h>
20#include <tbb/blocked_range.h>
21#include <tbb/parallel_reduce.h>
22#include <cmath>
23#include <functional>
24
25 namespace openvdb {
26 OPENVDB_USE_VERSION_NAMESPACE
27 namespace OPENVDB_VERSION_NAME {
28 namespace tools {
29
30/// @brief Resample an input grid into an output grid of the same type such that,
31/// after resampling, the input and output grids coincide (apart from sampling
32/// artifacts), but the output grid's transform is unchanged.
33/// @details Specifically, this function resamples the input grid into the output
34/// grid's index space, using a sampling kernel like PointSampler, BoxSampler,
35/// or QuadraticSampler.
36/// @param inGrid the grid to be resampled
37/// @param outGrid the grid into which to write the resampled voxel data
38/// @param interrupter an object adhering to the util::NullInterrupter interface
39/// @par Example:
40/// @code
41/// // Create an input grid with the default identity transform
42/// // and populate it with a level-set sphere.
43/// FloatGrid::ConstPtr src = tools::makeSphere(...);
44/// // Create an output grid and give it a uniform-scale transform.
45/// FloatGrid::Ptr dest = FloatGrid::create();
46/// const float voxelSize = 0.5;
47/// dest->setTransform(math::Transform::createLinearTransform(voxelSize));
48/// // Resample the input grid into the output grid, reproducing
49/// // the level-set sphere at a smaller voxel size.
50/// MyInterrupter interrupter = ...;
51/// tools::resampleToMatch<tools::QuadraticSampler>(*src, *dest, interrupter);
52/// @endcode
53 template<typename Sampler, typename Interrupter, typename GridType>
54 void
55 resampleToMatch(const GridType& inGrid, GridType& outGrid, Interrupter& interrupter);
56
57/// @brief Resample an input grid into an output grid of the same type such that,
58/// after resampling, the input and output grids coincide (apart from sampling
59/// artifacts), but the output grid's transform is unchanged.
60/// @details Specifically, this function resamples the input grid into the output
61/// grid's index space, using a sampling kernel like PointSampler, BoxSampler,
62/// or QuadraticSampler.
63/// @param inGrid the grid to be resampled
64/// @param outGrid the grid into which to write the resampled voxel data
65/// @par Example:
66/// @code
67/// // Create an input grid with the default identity transform
68/// // and populate it with a level-set sphere.
69/// FloatGrid::ConstPtr src = tools::makeSphere(...);
70/// // Create an output grid and give it a uniform-scale transform.
71/// FloatGrid::Ptr dest = FloatGrid::create();
72/// const float voxelSize = 0.5;
73/// dest->setTransform(math::Transform::createLinearTransform(voxelSize));
74/// // Resample the input grid into the output grid, reproducing
75/// // the level-set sphere at a smaller voxel size.
76/// tools::resampleToMatch<tools::QuadraticSampler>(*src, *dest);
77/// @endcode
78 template<typename Sampler, typename GridType>
79 void
80 resampleToMatch(const GridType& inGrid, GridType& outGrid);
81
82
83////////////////////////////////////////
84
85/// @cond OPENVDB_DOCS_INTERNAL
86
87 namespace internal {
88
89/// @brief A TileSampler wraps a grid sampler of another type (BoxSampler,
90/// QuadraticSampler, etc.), and for samples that fall within a given tile
91/// of the grid, it returns a cached tile value instead of accessing the grid.
92 template<typename Sampler, typename TreeT>
93 class TileSampler: public Sampler
94{
95 public:
96 using ValueT = typename TreeT::ValueType;
97
98 /// @param b the index-space bounding box of a particular grid tile
99 /// @param tileVal the tile's value
100 /// @param on the tile's active state
101 TileSampler(const CoordBBox& b, const ValueT& tileVal, bool on):
102 mBBox(b.min().asVec3d(), b.max().asVec3d()), mVal(tileVal), mActive(on), mEmpty(false)
103 {
104 mBBox.expand(-this->radius()); // shrink the bounding box by the sample radius
105 mEmpty = mBBox.empty();
106 }
107
108 bool sample(const TreeT& inTree, const Vec3R& inCoord, ValueT& result) const
109 {
110 if (!mEmpty && mBBox.isInside(inCoord)) { result = mVal; return mActive; }
111 return Sampler::sample(inTree, inCoord, result);
112 }
113
114 protected:
115 BBoxd mBBox;
116 ValueT mVal;
117 bool mActive, mEmpty;
118};
119
120
121/// @brief For point sampling, tree traversal is less expensive than testing
122/// bounding box membership.
123 template<typename TreeT>
124 class TileSampler<PointSampler, TreeT>: public PointSampler {
125 public:
126 TileSampler(const CoordBBox&, const typename TreeT::ValueType&, bool) {}
127};
128
129/// @brief For point sampling, tree traversal is less expensive than testing
130/// bounding box membership.
131 template<typename TreeT>
132 class TileSampler<StaggeredPointSampler, TreeT>: public StaggeredPointSampler {
133 public:
134 TileSampler(const CoordBBox&, const typename TreeT::ValueType&, bool) {}
135};
136
137} // namespace internal
138
139/// @endcond
140
141
142////////////////////////////////////////
143
144
145/// A GridResampler applies a geometric transformation to an
146/// input grid using one of several sampling schemes, and stores
147/// the result in an output grid.
148///
149/// Usage:
150/// @code
151/// GridResampler resampler();
152/// resampler.transformGrid<BoxSampler>(xform, inGrid, outGrid);
153/// @endcode
154/// where @c xform is a functor that implements the following methods:
155/// @code
156/// bool isAffine() const
157/// openvdb::Vec3d transform(const openvdb::Vec3d&) const
158/// openvdb::Vec3d invTransform(const openvdb::Vec3d&) const
159/// @endcode
160/// @note When the transform is affine and can be expressed as a 4 x 4 matrix,
161/// a GridTransformer is much more efficient than a GridResampler.
162 class GridResampler
163{
164 public:
165 using Ptr = SharedPtr<GridResampler>;
166 using InterruptFunc = std::function<bool (void)>;
167
168 GridResampler(): mThreaded(true), mTransformTiles(true) {}
169 virtual ~GridResampler() {}
170
171 GridResampler(const GridResampler&) = default;
172 GridResampler& operator=(const GridResampler&) = default;
173
174 /// Enable or disable threading. (Threading is enabled by default.)
175 void setThreaded(bool b) { mThreaded = b; }
176 /// Return @c true if threading is enabled.
177 bool threaded() const { return mThreaded; }
178 /// Enable or disable processing of tiles. (Enabled by default, except for level set grids.)
179 void setTransformTiles(bool b) { mTransformTiles = b; }
180 /// Return @c true if tile processing is enabled.
181 bool transformTiles() const { return mTransformTiles; }
182
183 /// @brief Allow processing to be aborted by providing an interrupter object.
184 /// The interrupter will be queried periodically during processing.
185 /// @see util/NullInterrupter.h for interrupter interface requirements.
186 template<typename InterrupterType> void setInterrupter(InterrupterType&);
187
188 template<typename Sampler, typename GridT, typename Transformer>
189 void transformGrid(const Transformer&,
190 const GridT& inGrid, GridT& outGrid) const;
191
192 protected:
193 template<typename Sampler, typename GridT, typename Transformer>
194 void applyTransform(const Transformer&, const GridT& inGrid, GridT& outGrid) const;
195
196 bool interrupt() const { return mInterrupt && mInterrupt(); }
197
198 private:
199 template<typename Sampler, typename InTreeT, typename OutTreeT, typename Transformer>
200 static void transformBBox(const Transformer&, const CoordBBox& inBBox,
201 const InTreeT& inTree, OutTreeT& outTree, const InterruptFunc&,
202 const Sampler& = Sampler());
203
204 template<typename Sampler, typename TreeT, typename Transformer>
205 class RangeProcessor;
206
207 bool mThreaded, mTransformTiles;
208 InterruptFunc mInterrupt;
209};
210
211
212////////////////////////////////////////
213
214
215/// @brief A GridTransformer applies a geometric transformation to an
216/// input grid using one of several sampling schemes, and stores
217/// the result in an output grid.
218///
219/// @note GridTransformer is optimized for affine transformations.
220///
221/// Usage:
222/// @code
223/// Mat4R xform = ...;
224/// GridTransformer transformer(xform);
225/// transformer.transformGrid<BoxSampler>(inGrid, outGrid);
226/// @endcode
227/// or
228/// @code
229/// Vec3R pivot = ..., scale = ..., rotate = ..., translate = ...;
230/// GridTransformer transformer(pivot, scale, rotate, translate);
231/// transformer.transformGrid<QuadraticSampler>(inGrid, outGrid);
232/// @endcode
233 class GridTransformer: public GridResampler
234{
235 public:
236 using Ptr = SharedPtr<GridTransformer>;
237
238 GridTransformer(const Mat4R& xform);
239 GridTransformer(
240 const Vec3R& pivot,
241 const Vec3R& scale,
242 const Vec3R& rotate,
243 const Vec3R& translate,
244 const std::string& xformOrder = "tsr",
245 const std::string& rotationOrder = "zyx");
246 ~GridTransformer() override = default;
247
248 GridTransformer(const GridTransformer&) = default;
249 GridTransformer& operator=(const GridTransformer&) = default;
250
251 const Mat4R& getTransform() const { return mTransform; }
252
253 template<class Sampler, class GridT>
254 void transformGrid(const GridT& inGrid, GridT& outGrid) const;
255
256 private:
257 struct MatrixTransform;
258
259 inline void init(const Vec3R& pivot, const Vec3R& scale,
260 const Vec3R& rotate, const Vec3R& translate,
261 const std::string& xformOrder, const std::string& rotOrder);
262
263 Vec3R mPivot;
264 Vec3i mMipLevels;
265 Mat4R mTransform, mPreScaleTransform, mPostScaleTransform;
266};
267
268
269////////////////////////////////////////
270
271
272 namespace local_util {
273
274 enum { DECOMP_INVALID = 0, DECOMP_VALID = 1, DECOMP_UNIQUE = 2 };
275
276/// @brief Decompose an affine transform into scale, rotation (XYZ order),
277/// and translation components.
278/// @return DECOMP_INVALID if the given matrix is not affine or cannot
279/// be decomposed, DECOMP_UNIQUE if the matrix has a unique decomposition,
280/// DECOMP_VALID otherwise
281 template<typename T>
282 int
283 decompose(const math::Mat4<T>& m, math::Vec3<T>& scale,
284 math::Vec3<T>& rotate, math::Vec3<T>& translate)
285{
286 if (!math::isAffine(m)) return DECOMP_INVALID;
287
288 // This is the translation in world space
289 translate = m.getTranslation();
290 // Extract translation.
291 const math::Mat3<T> xform = m.getMat3();
292
293 const math::Vec3<T> unsignedScale(
294 (math::Vec3<T>(1, 0, 0) * xform).length(),
295 (math::Vec3<T>(0, 1, 0) * xform).length(),
296 (math::Vec3<T>(0, 0, 1) * xform).length());
297
298 const bool hasUniformScale = unsignedScale.eq(math::Vec3<T>(unsignedScale[0]));
299
300 bool hasRotation = false;
301 bool validDecomposition = false;
302
303 T minAngle = std::numeric_limits<T>::max();
304
305 // If the transformation matrix contains a reflection, test different negative scales
306 // to find a decomposition that favors the optimal resampling algorithm.
307 for (size_t n = 0; n < 8; ++n) {
308 const math::Vec3<T> signedScale(
309 n & 0x1 ? -unsignedScale.x() : unsignedScale.x(),
310 n & 0x2 ? -unsignedScale.y() : unsignedScale.y(),
311 n & 0x4 ? -unsignedScale.z() : unsignedScale.z());
312
313 // Extract scale and potentially reflection.
314 const math::Mat3<T> mat = xform * math::scale<math::Mat3<T> >(signedScale).inverse();
315 if (mat.det() < T(0.0)) continue; // Skip if mat contains a reflection.
316
317 const math::Vec3<T> tmpAngle = math::eulerAngles(mat, math::XYZ_ROTATION);
318
319 const math::Mat3<T> rebuild =
320 math::rotation<math::Mat3<T> >(math::Vec3<T>(0, 0, 1), tmpAngle.z()) *
321 math::rotation<math::Mat3<T> >(math::Vec3<T>(0, 1, 0), tmpAngle.y()) *
322 math::rotation<math::Mat3<T> >(math::Vec3<T>(1, 0, 0), tmpAngle.x()) *
323 math::scale<math::Mat3<T> >(signedScale);
324
325 if (xform.eq(rebuild)) {
326
327 const T maxAngle = std::max(std::abs(tmpAngle[0]),
328 std::max(std::abs(tmpAngle[1]), std::abs(tmpAngle[2])));
329
330 if (!(minAngle < maxAngle)) { // Update if less or equal.
331
332 minAngle = maxAngle;
333 rotate = tmpAngle;
334 scale = signedScale;
335
336 hasRotation = !rotate.eq(math::Vec3<T>::zero());
337 validDecomposition = true;
338
339 if (hasUniformScale || !hasRotation) {
340 // Current decomposition is optimal.
341 break;
342 }
343 }
344 }
345 }
346
347 if (!validDecomposition) {
348 // The decomposition is invalid if the transformation matrix contains shear.
349 return DECOMP_INVALID;
350 }
351 if (hasRotation && !hasUniformScale) {
352 // No unique decomposition if scale is nonuniform and rotation is nonzero.
353 return DECOMP_VALID;
354 }
355 return DECOMP_UNIQUE;
356}
357
358} // namespace local_util
359
360
361////////////////////////////////////////
362
363
364/// This class implements the Transformer functor interface (specifically,
365/// the isAffine(), transform() and invTransform() methods) for a transform
366/// that is expressed as a 4 x 4 matrix.
367 struct GridTransformer::MatrixTransform
368{
369 MatrixTransform(): mat(Mat4R::identity()), invMat(Mat4R::identity()) {}
370 MatrixTransform(const Mat4R& xform): mat(xform), invMat(xform.inverse()) {}
371
372 bool isAffine() const { return math::isAffine(mat); }
373
374 Vec3R transform(const Vec3R& pos) const { return mat.transformH(pos); }
375
376 Vec3R invTransform(const Vec3R& pos) const { return invMat.transformH(pos); }
377
378 Mat4R mat, invMat;
379};
380
381
382////////////////////////////////////////
383
384
385/// @brief This class implements the Transformer functor interface (specifically,
386/// the isAffine(), transform() and invTransform() methods) for a transform
387/// that maps an A grid into a B grid's index space such that, after resampling,
388/// A's index space and transform match B's index space and transform.
389 class ABTransform
390{
391 public:
392 /// @param aXform the A grid's transform
393 /// @param bXform the B grid's transform
394 ABTransform(const math::Transform& aXform, const math::Transform& bXform):
395 mAXform(aXform),
396 mBXform(bXform),
397 mIsAffine(mAXform.isLinear() && mBXform.isLinear()),
398 mIsIdentity(mIsAffine && mAXform == mBXform)
399 {}
400
401 bool isAffine() const { return mIsAffine; }
402
403 bool isIdentity() const { return mIsIdentity; }
404
405 openvdb::Vec3R transform(const openvdb::Vec3R& pos) const
406 {
407 return mBXform.worldToIndex(mAXform.indexToWorld(pos));
408 }
409
410 openvdb::Vec3R invTransform(const openvdb::Vec3R& pos) const
411 {
412 return mAXform.worldToIndex(mBXform.indexToWorld(pos));
413 }
414
415 const math::Transform& getA() const { return mAXform; }
416 const math::Transform& getB() const { return mBXform; }
417
418 private:
419 const math::Transform &mAXform, &mBXform;
420 const bool mIsAffine;
421 const bool mIsIdentity;
422};
423
424
425/// The normal entry points for resampling are the resampleToMatch() functions,
426/// which correctly handle level set grids under scaling and shearing.
427/// doResampleToMatch() is mainly for internal use but is typically faster
428/// for level sets, and correct provided that no scaling or shearing is needed.
429///
430/// @warning Do not use this function to scale or shear a level set grid.
431 template<typename Sampler, typename Interrupter, typename GridType>
432 void
433 doResampleToMatch(const GridType& inGrid, GridType& outGrid, Interrupter& interrupter)
434{
435 ABTransform xform(inGrid.transform(), outGrid.transform());
436
437 if (Sampler::consistent() && xform.isIdentity()) {
438 // If the transforms of the input and output are identical, the
439 // output tree is simply a deep copy of the input tree.
440 outGrid.setTree(inGrid.tree().copy());
441 } else if (xform.isAffine()) {
442 // If the input and output transforms are both affine, create an
443 // input to output transform (in:index-to-world * out:world-to-index)
444 // and use the fast GridTransformer API.
445 Mat4R mat = xform.getA().baseMap()->getAffineMap()->getMat4() *
446 ( xform.getB().baseMap()->getAffineMap()->getMat4().inverse() );
447
448 GridTransformer transformer(mat);
449 transformer.setInterrupter(interrupter);
450
451 // Transform the input grid and store the result in the output grid.
452 transformer.transformGrid<Sampler>(inGrid, outGrid);
453 } else {
454 // If either the input or the output transform is non-affine,
455 // use the slower GridResampler API.
456 GridResampler resampler;
457 resampler.setInterrupter(interrupter);
458
459 resampler.transformGrid<Sampler>(xform, inGrid, outGrid);
460 }
461}
462
463
464 template<typename ValueType>
465 struct HalfWidthOp {
466 static ValueType eval(const ValueType& background, const Vec3d& voxelSize)
467 {
468 OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN
469 ValueType result(background * (1.0 / voxelSize[0]));
470 OPENVDB_NO_TYPE_CONVERSION_WARNING_END
471 return result;
472 }
473}; // struct HalfWidthOp
474
475 template<>
476 struct HalfWidthOp<bool> {
477 static bool eval(const bool& background, const Vec3d& /*voxelSize*/)
478 {
479 return background;
480 }
481}; // struct HalfWidthOp<bool>
482
483
484 template<typename Sampler, typename Interrupter, typename GridType>
485 void
486 resampleToMatch(const GridType& inGrid, GridType& outGrid, Interrupter& interrupter)
487{
488 if (inGrid.getGridClass() == GRID_LEVEL_SET) {
489 // If the input grid is a level set, resample it using the level set rebuild tool.
490
491 if (inGrid.constTransform() == outGrid.constTransform()) {
492 // If the transforms of the input and output grids are identical,
493 // the output tree is simply a deep copy of the input tree.
494 outGrid.setTree(inGrid.tree().copy());
495 return;
496 }
497
498 // If the output grid is a level set, resample the input grid to have the output grid's
499 // background value. Otherwise, preserve the input grid's background value.
500 using ValueT = typename GridType::ValueType;
501 const bool outIsLevelSet = outGrid.getGridClass() == openvdb::GRID_LEVEL_SET;
502
503 const ValueT halfWidth = outIsLevelSet
504 ? HalfWidthOp<ValueT>::eval(outGrid.background(), outGrid.voxelSize())
505 : HalfWidthOp<ValueT>::eval(inGrid.background(), inGrid.voxelSize());
506
507 typename GridType::Ptr tempGrid;
508 try {
509 tempGrid = doLevelSetRebuild(inGrid, /*iso=*/zeroVal<ValueT>(),
510 /*exWidth=*/halfWidth, /*inWidth=*/halfWidth,
511 &outGrid.constTransform(), &interrupter);
512 } catch (TypeError&) {
513 // The input grid is classified as a level set, but it has a value type
514 // that is not supported by the level set rebuild tool. Fall back to
515 // using the generic resampler.
516 tempGrid.reset();
517 }
518 if (tempGrid) {
519 outGrid.setTree(tempGrid->treePtr());
520 return;
521 }
522 }
523
524 // If the input grid is not a level set, use the generic resampler.
525 doResampleToMatch<Sampler>(inGrid, outGrid, interrupter);
526}
527
528
529 template<typename Sampler, typename GridType>
530 void
531 resampleToMatch(const GridType& inGrid, GridType& outGrid)
532{
533 util::NullInterrupter interrupter;
534 resampleToMatch<Sampler>(inGrid, outGrid, interrupter);
535}
536
537
538////////////////////////////////////////
539
540
541 inline
542 GridTransformer::GridTransformer(const Mat4R& xform):
543 mPivot(0, 0, 0),
544 mMipLevels(0, 0, 0),
545 mTransform(xform),
546 mPreScaleTransform(Mat4R::identity()),
547 mPostScaleTransform(Mat4R::identity())
548{
549 Vec3R scale, rotate, translate;
550 if (local_util::decompose(mTransform, scale, rotate, translate)) {
551 // If the transform can be decomposed into affine components,
552 // use them to set up a mipmapping-like scheme for downsampling.
553 init(mPivot, scale, rotate, translate, "rst", "zyx");
554 }
555}
556
557
558 inline
559 GridTransformer::GridTransformer(
560 const Vec3R& pivot, const Vec3R& scale,
561 const Vec3R& rotate, const Vec3R& translate,
562 const std::string& xformOrder, const std::string& rotOrder):
563 mPivot(0, 0, 0),
564 mMipLevels(0, 0, 0),
565 mPreScaleTransform(Mat4R::identity()),
566 mPostScaleTransform(Mat4R::identity())
567{
568 init(pivot, scale, rotate, translate, xformOrder, rotOrder);
569}
570
571
572////////////////////////////////////////
573
574
575 inline void
576GridTransformer::init(
577 const Vec3R& pivot, const Vec3R& scale,
578 const Vec3R& rotate, const Vec3R& translate,
579 const std::string& xformOrder, const std::string& rotOrder)
580{
581 if (xformOrder.size() != 3) {
582 OPENVDB_THROW(ValueError, "invalid transform order (" + xformOrder + ")");
583 }
584 if (rotOrder.size() != 3) {
585 OPENVDB_THROW(ValueError, "invalid rotation order (" + rotOrder + ")");
586 }
587
588 mPivot = pivot;
589
590 // Scaling is handled via a mipmapping-like scheme of successive
591 // halvings of the tree resolution, until the remaining scale
592 // factor is greater than or equal to 1/2.
593 Vec3R scaleRemainder = scale;
594 for (int i = 0; i < 3; ++i) {
595 double s = std::fabs(scale(i));
596 if (s < 0.5) {
597 mMipLevels(i) = int(std::floor(-std::log(s)/std::log(2.0)));
598 scaleRemainder(i) = scale(i) * (1 << mMipLevels(i));
599 }
600 }
601
602 // Build pre-scale and post-scale transform matrices based on
603 // the user-specified order of operations.
604 // Note that we iterate over the transform order string in reverse order
605 // (e.g., "t", "r", "s", given "srt"). This is because math::Mat matrices
606 // postmultiply row vectors rather than premultiplying column vectors.
607 mTransform = mPreScaleTransform = mPostScaleTransform = Mat4R::identity();
608 Mat4R* remainder = &mPostScaleTransform;
609 int rpos, spos, tpos;
610 rpos = spos = tpos = 3;
611 for (int ix = 2; ix >= 0; --ix) { // reverse iteration
612 switch (xformOrder[ix]) {
613
614 case 'r':
615 rpos = ix;
616 mTransform.preTranslate(pivot);
617 remainder->preTranslate(pivot);
618
619 int xpos, ypos, zpos;
620 xpos = ypos = zpos = 3;
621 for (int ir = 2; ir >= 0; --ir) {
622 switch (rotOrder[ir]) {
623 case 'x':
624 xpos = ir;
625 mTransform.preRotate(math::X_AXIS, rotate.x());
626 remainder->preRotate(math::X_AXIS, rotate.x());
627 break;
628 case 'y':
629 ypos = ir;
630 mTransform.preRotate(math::Y_AXIS, rotate.y());
631 remainder->preRotate(math::Y_AXIS, rotate.y());
632 break;
633 case 'z':
634 zpos = ir;
635 mTransform.preRotate(math::Z_AXIS, rotate.z());
636 remainder->preRotate(math::Z_AXIS, rotate.z());
637 break;
638 }
639 }
640 // Reject rotation order strings that don't contain exactly one
641 // instance of "x", "y" and "z".
642 if (xpos > 2 || ypos > 2 || zpos > 2) {
643 OPENVDB_THROW(ValueError, "invalid rotation order (" + rotOrder + ")");
644 }
645
646 mTransform.preTranslate(-pivot);
647 remainder->preTranslate(-pivot);
648 break;
649
650 case 's':
651 spos = ix;
652 mTransform.preTranslate(pivot);
653 mTransform.preScale(scale);
654 mTransform.preTranslate(-pivot);
655
656 remainder->preTranslate(pivot);
657 remainder->preScale(scaleRemainder);
658 remainder->preTranslate(-pivot);
659 remainder = &mPreScaleTransform;
660 break;
661
662 case 't':
663 tpos = ix;
664 mTransform.preTranslate(translate);
665 remainder->preTranslate(translate);
666 break;
667 }
668 }
669 // Reject transform order strings that don't contain exactly one
670 // instance of "t", "r" and "s".
671 if (tpos > 2 || rpos > 2 || spos > 2) {
672 OPENVDB_THROW(ValueError, "invalid transform order (" + xformOrder + ")");
673 }
674}
675
676
677////////////////////////////////////////
678
679
680 template<typename InterrupterType>
681 void
682 GridResampler::setInterrupter(InterrupterType& interrupter)
683{
684 mInterrupt = std::bind(&InterrupterType::wasInterrupted,
685 /*this=*/&interrupter, /*percent=*/-1);
686}
687
688
689 template<typename Sampler, typename GridT, typename Transformer>
690 void
691 GridResampler::transformGrid(const Transformer& xform,
692 const GridT& inGrid, GridT& outGrid) const
693{
694 tools::changeBackground(outGrid.tree(), inGrid.background());
695 applyTransform<Sampler>(xform, inGrid, outGrid);
696}
697
698
699 template<class Sampler, class GridT>
700 void
701 GridTransformer::transformGrid(const GridT& inGrid, GridT& outGrid) const
702{
703 tools::changeBackground(outGrid.tree(), inGrid.background());
704
705 if (!Sampler::mipmap() || mMipLevels == Vec3i::zero()) {
706 // Skip the mipmapping step.
707 const MatrixTransform xform(mTransform);
708 applyTransform<Sampler>(xform, inGrid, outGrid);
709
710 } else {
711 bool firstPass = true;
712 const typename GridT::ValueType background = inGrid.background();
713 typename GridT::Ptr tempGrid = GridT::create(background);
714
715 if (!mPreScaleTransform.eq(Mat4R::identity())) {
716 firstPass = false;
717 // Apply the pre-scale transform to the input grid
718 // and store the result in a temporary grid.
719 const MatrixTransform xform(mPreScaleTransform);
720 applyTransform<Sampler>(xform, inGrid, *tempGrid);
721 }
722
723 // While the scale factor along one or more axes is less than 1/2,
724 // scale the grid by half along those axes.
725 Vec3i count = mMipLevels; // # of halvings remaining per axis
726 while (count != Vec3i::zero()) {
727 MatrixTransform xform;
728 xform.mat.setTranslation(mPivot);
729 xform.mat.preScale(Vec3R(
730 count.x() ? .5 : 1, count.y() ? .5 : 1, count.z() ? .5 : 1));
731 xform.mat.preTranslate(-mPivot);
732 xform.invMat = xform.mat.inverse();
733
734 if (firstPass) {
735 firstPass = false;
736 // Scale the input grid and store the result in a temporary grid.
737 applyTransform<Sampler>(xform, inGrid, *tempGrid);
738 } else {
739 // Scale the temporary grid and store the result in a transient grid,
740 // then swap the two and discard the transient grid.
741 typename GridT::Ptr destGrid = GridT::create(background);
742 applyTransform<Sampler>(xform, *tempGrid, *destGrid);
743 tempGrid.swap(destGrid);
744 }
745 // (3, 2, 1) -> (2, 1, 0) -> (1, 0, 0) -> (0, 0, 0), etc.
746 count = math::maxComponent(count - 1, Vec3i::zero());
747 }
748
749 // Apply the post-scale transform and store the result in the output grid.
750 if (!mPostScaleTransform.eq(Mat4R::identity())) {
751 const MatrixTransform xform(mPostScaleTransform);
752 applyTransform<Sampler>(xform, *tempGrid, outGrid);
753 } else {
754 outGrid.setTree(tempGrid->treePtr());
755 }
756 }
757}
758
759
760////////////////////////////////////////
761
762
763 template<class Sampler, class TreeT, typename Transformer>
764 class GridResampler::RangeProcessor
765{
766 public:
767 using LeafIterT = typename TreeT::LeafCIter;
768 using TileIterT = typename TreeT::ValueAllCIter;
769 using LeafRange = typename tree::IteratorRange<LeafIterT>;
770 using TileRange = typename tree::IteratorRange<TileIterT>;
771 using InTreeAccessor = typename tree::ValueAccessor<const TreeT>;
772 using OutTreeAccessor = typename tree::ValueAccessor<TreeT>;
773
774 RangeProcessor(const Transformer& xform, const CoordBBox& b, const TreeT& inT, TreeT& outT):
775 mIsRoot(true), mXform(xform), mBBox(b),
776 mInTree(inT), mOutTree(&outT), mInAcc(mInTree), mOutAcc(*mOutTree)
777 {}
778
779 RangeProcessor(const Transformer& xform, const CoordBBox& b, const TreeT& inTree):
780 mIsRoot(false), mXform(xform), mBBox(b),
781 mInTree(inTree), mOutTree(new TreeT(inTree.background())),
782 mInAcc(mInTree), mOutAcc(*mOutTree)
783 {}
784
785 ~RangeProcessor() { if (!mIsRoot) delete mOutTree; }
786
787 /// Splitting constructor: don't copy the original processor's output tree
788 RangeProcessor(RangeProcessor& other, tbb::split):
789 mIsRoot(false),
790 mXform(other.mXform),
791 mBBox(other.mBBox),
792 mInTree(other.mInTree),
793 mOutTree(new TreeT(mInTree.background())),
794 mInAcc(mInTree),
795 mOutAcc(*mOutTree),
796 mInterrupt(other.mInterrupt)
797 {}
798
799 void setInterrupt(const InterruptFunc& f) { mInterrupt = f; }
800
801 /// Transform each leaf node in the given range.
802 void operator()(const LeafRange& r)
803 {
804 for (LeafRange it(r); it.test(); ++it) {
805 if (interrupt()) break;
806 LeafIterT i = it.iterator();
807 CoordBBox bbox(i->origin(), i->origin() + Coord(i->dim()));
808 if (!mBBox.empty()) {
809 // Intersect the leaf node's bounding box with mBBox.
810 bbox = CoordBBox(
811 Coord::maxComponent(bbox.min(), mBBox.min()),
812 Coord::minComponent(bbox.max(), mBBox.max()));
813 }
814 if (!bbox.empty()) {
815 transformBBox<Sampler>(mXform, bbox, mInAcc, mOutAcc, mInterrupt);
816 }
817 }
818 }
819
820 /// Transform each non-background tile in the given range.
821 void operator()(const TileRange& r)
822 {
823 for (TileRange it(r); it.test(); ++it) {
824 if (interrupt()) break;
825
826 TileIterT i = it.iterator();
827 // Skip voxels and background tiles.
828 if (!i.isTileValue()) continue;
829 if (!i.isValueOn() && math::isApproxEqual(*i, mOutTree->background())) continue;
830
831 CoordBBox bbox;
832 i.getBoundingBox(bbox);
833 if (!mBBox.empty()) {
834 // Intersect the tile's bounding box with mBBox.
835 bbox = CoordBBox(
836 Coord::maxComponent(bbox.min(), mBBox.min()),
837 Coord::minComponent(bbox.max(), mBBox.max()));
838 }
839 if (!bbox.empty()) {
840 /// @todo This samples the tile voxel-by-voxel, which is much too slow.
841 /// Instead, compute the largest axis-aligned bounding box that is
842 /// contained in the transformed tile (adjusted for the sampler radius)
843 /// and fill it with the tile value. Then transform the remaining voxels.
844 internal::TileSampler<Sampler, InTreeAccessor>
845 sampler(bbox, i.getValue(), i.isValueOn());
846 transformBBox(mXform, bbox, mInAcc, mOutAcc, mInterrupt, sampler);
847 }
848 }
849 }
850
851 /// Merge another processor's output tree into this processor's tree.
852 void join(RangeProcessor& other)
853 {
854 if (!interrupt()) mOutTree->merge(*other.mOutTree);
855 }
856
857 private:
858 bool interrupt() const { return mInterrupt && mInterrupt(); }
859
860 const bool mIsRoot; // true if mOutTree is the top-level tree
861 Transformer mXform;
862 CoordBBox mBBox;
863 const TreeT& mInTree;
864 TreeT* mOutTree;
865 InTreeAccessor mInAcc;
866 OutTreeAccessor mOutAcc;
867 InterruptFunc mInterrupt;
868};
869
870
871////////////////////////////////////////
872
873
874 template<class Sampler, class GridT, typename Transformer>
875 void
876 GridResampler::applyTransform(const Transformer& xform,
877 const GridT& inGrid, GridT& outGrid) const
878{
879 using TreeT = typename GridT::TreeType;
880 const TreeT& inTree = inGrid.tree();
881 TreeT& outTree = outGrid.tree();
882
883 using RangeProc = RangeProcessor<Sampler, TreeT, Transformer>;
884
885 const GridClass gridClass = inGrid.getGridClass();
886
887 if (gridClass != GRID_LEVEL_SET && mTransformTiles) {
888 // Independently transform the tiles of the input grid.
889 // Note: Tiles in level sets can only be background tiles, and they
890 // are handled more efficiently with a signed flood fill (see below).
891
892 RangeProc proc(xform, CoordBBox(), inTree, outTree);
893 proc.setInterrupt(mInterrupt);
894
895 typename RangeProc::TileIterT tileIter = inTree.cbeginValueAll();
896 tileIter.setMaxDepth(tileIter.getLeafDepth() - 1); // skip leaf nodes
897 typename RangeProc::TileRange tileRange(tileIter);
898
899 if (mThreaded) {
900 tbb::parallel_reduce(tileRange, proc);
901 } else {
902 proc(tileRange);
903 }
904 }
905
906 CoordBBox clipBBox;
907 if (gridClass == GRID_LEVEL_SET) {
908 // Inactive voxels in level sets can only be background voxels, and they
909 // are handled more efficiently with a signed flood fill (see below).
910 clipBBox = inGrid.evalActiveVoxelBoundingBox();
911 }
912
913 // Independently transform the leaf nodes of the input grid.
914
915 RangeProc proc(xform, clipBBox, inTree, outTree);
916 proc.setInterrupt(mInterrupt);
917
918 typename RangeProc::LeafRange leafRange(inTree.cbeginLeaf());
919
920 if (mThreaded) {
921 tbb::parallel_reduce(leafRange, proc);
922 } else {
923 proc(leafRange);
924 }
925
926 // If the grid is a level set, mark inactive voxels as inside or outside.
927 if (gridClass == GRID_LEVEL_SET) {
928 tools::pruneLevelSet(outTree);
929 tools::signedFloodFill(outTree);
930 }
931}
932
933
934////////////////////////////////////////
935
936
937//static
938 template<class Sampler, class InTreeT, class OutTreeT, class Transformer>
939 void
940GridResampler::transformBBox(
941 const Transformer& xform,
942 const CoordBBox& bbox,
943 const InTreeT& inTree,
944 OutTreeT& outTree,
945 const InterruptFunc& interrupt,
946 const Sampler& sampler)
947{
948 using ValueT = typename OutTreeT::ValueType;
949
950 // Transform the corners of the input tree's bounding box
951 // and compute the enclosing bounding box in the output tree.
952 Vec3R
953 inRMin(bbox.min().x(), bbox.min().y(), bbox.min().z()),
954 inRMax(bbox.max().x()+1, bbox.max().y()+1, bbox.max().z()+1),
955 outRMin = math::minComponent(xform.transform(inRMin), xform.transform(inRMax)),
956 outRMax = math::maxComponent(xform.transform(inRMin), xform.transform(inRMax));
957 for (int i = 0; i < 8; ++i) {
958 Vec3R corner(
959 i & 1 ? inRMax.x() : inRMin.x(),
960 i & 2 ? inRMax.y() : inRMin.y(),
961 i & 4 ? inRMax.z() : inRMin.z());
962 outRMin = math::minComponent(outRMin, xform.transform(corner));
963 outRMax = math::maxComponent(outRMax, xform.transform(corner));
964 }
965 Vec3i
966 outMin = local_util::floorVec3(outRMin) - Sampler::radius(),
967 outMax = local_util::ceilVec3(outRMax) + Sampler::radius();
968
969 if (!xform.isAffine()) {
970 // If the transform is not affine, back-project each output voxel
971 // into the input tree.
972 Vec3R xyz, inXYZ;
973 Coord outXYZ;
974 int &x = outXYZ.x(), &y = outXYZ.y(), &z = outXYZ.z();
975 for (x = outMin.x(); x <= outMax.x(); ++x) {
976 if (interrupt && interrupt()) break;
977 xyz.x() = x;
978 for (y = outMin.y(); y <= outMax.y(); ++y) {
979 if (interrupt && interrupt()) break;
980 xyz.y() = y;
981 for (z = outMin.z(); z <= outMax.z(); ++z) {
982 xyz.z() = z;
983 inXYZ = xform.invTransform(xyz);
984 ValueT result;
985 if (sampler.sample(inTree, inXYZ, result)) {
986 outTree.setValueOn(outXYZ, result);
987 } else {
988 // Note: Don't overwrite existing active values with inactive values.
989 if (!outTree.isValueOn(outXYZ)) {
990 outTree.setValueOff(outXYZ, result);
991 }
992 }
993 }
994 }
995 }
996 } else { // affine
997 // Compute step sizes in the input tree that correspond to
998 // unit steps in x, y and z in the output tree.
999 const Vec3R
1000 translation = xform.invTransform(Vec3R(0, 0, 0)),
1001 deltaX = xform.invTransform(Vec3R(1, 0, 0)) - translation,
1002 deltaY = xform.invTransform(Vec3R(0, 1, 0)) - translation,
1003 deltaZ = xform.invTransform(Vec3R(0, 0, 1)) - translation;
1004
1005#if defined(__ICC)
1006 /// @todo The following line is a workaround for bad code generation
1007 /// in opt-icc11.1_64 (but not debug or gcc) builds. It should be
1008 /// removed once the problem has been addressed at its source.
1009 const Vec3R dummy = deltaX;
1010#endif
1011
1012 // Step by whole voxels through the output tree, sampling the
1013 // corresponding fractional voxels of the input tree.
1014 Vec3R inStartX = xform.invTransform(Vec3R(outMin));
1015 Coord outXYZ;
1016 int &x = outXYZ.x(), &y = outXYZ.y(), &z = outXYZ.z();
1017 for (x = outMin.x(); x <= outMax.x(); ++x, inStartX += deltaX) {
1018 if (interrupt && interrupt()) break;
1019 Vec3R inStartY = inStartX;
1020 for (y = outMin.y(); y <= outMax.y(); ++y, inStartY += deltaY) {
1021 if (interrupt && interrupt()) break;
1022 Vec3R inXYZ = inStartY;
1023 for (z = outMin.z(); z <= outMax.z(); ++z, inXYZ += deltaZ) {
1024 ValueT result;
1025 if (sampler.sample(inTree, inXYZ, result)) {
1026 outTree.setValueOn(outXYZ, result);
1027 } else {
1028 // Note: Don't overwrite existing active values with inactive values.
1029 if (!outTree.isValueOn(outXYZ)) {
1030 outTree.setValueOff(outXYZ, result);
1031 }
1032 }
1033 }
1034 }
1035 }
1036 }
1037} // GridResampler::transformBBox()
1038
1039
1040////////////////////////////////////////
1041
1042
1043// Explicit Template Instantiation
1044
1045#ifdef OPENVDB_USE_EXPLICIT_INSTANTIATION
1046
1047#ifdef OPENVDB_INSTANTIATE_GRIDTRANSFORMER
1048#include <openvdb/util/ExplicitInstantiation.h>
1049#endif
1050
1051#define _FUNCTION(TreeT) \
1052 void resampleToMatch<PointSampler>(const Grid<TreeT>&, Grid<TreeT>&, util::NullInterrupter&)
1053 OPENVDB_VOLUME_TREE_INSTANTIATE(_FUNCTION)
1054#undef _FUNCTION
1055
1056#define _FUNCTION(TreeT) \
1057 void resampleToMatch<BoxSampler>(const Grid<TreeT>&, Grid<TreeT>&, util::NullInterrupter&)
1058 OPENVDB_VOLUME_TREE_INSTANTIATE(_FUNCTION)
1059#undef _FUNCTION
1060
1061#define _FUNCTION(TreeT) \
1062 void resampleToMatch<QuadraticSampler>(const Grid<TreeT>&, Grid<TreeT>&, util::NullInterrupter&)
1063 OPENVDB_NUMERIC_TREE_INSTANTIATE(_FUNCTION)
1064#undef _FUNCTION
1065
1066#define _FUNCTION(TreeT) \
1067 void resampleToMatch<QuadraticSampler>(const Grid<TreeT>&, Grid<TreeT>&, util::NullInterrupter&)
1068 OPENVDB_VEC3_TREE_INSTANTIATE(_FUNCTION)
1069#undef _FUNCTION
1070
1071#endif // OPENVDB_USE_EXPLICIT_INSTANTIATION
1072
1073
1074} // namespace tools
1075} // namespace OPENVDB_VERSION_NAME
1076} // namespace openvdb
1077
1078#endif // OPENVDB_TOOLS_GRIDTRANSFORMER_HAS_BEEN_INCLUDED
ChangeBackground.h
Efficient multi-threaded replacement of the background values in tree.
OPENVDB_THROW
#define OPENVDB_THROW(exception, message)
Definition Exceptions.h:74
ExplicitInstantiation.h
Grid.h
Interpolation.h
LevelSetRebuild.h
Math.h
General-purpose arithmetic and comparison routines, most of which accept arbitrary value types (or at...
NullInterrupter.h
OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN
#define OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN
Bracket code with OPENVDB_NO_TYPE_CONVERSION_WARNING_BEGIN/_END, to inhibit warnings about type conve...
Definition Platform.h:227
OPENVDB_NO_TYPE_CONVERSION_WARNING_END
#define OPENVDB_NO_TYPE_CONVERSION_WARNING_END
Definition Platform.h:228
Prune.h
Defined various multi-threaded utility functions for trees.
SignedFloodFill.h
Propagate the signs of distance values from the active voxels in the narrow band to the inactive valu...
Types.h
openvdb::v11_0::Coord::minComponent
void minComponent(const Coord &other)
Perform a component-wise minimum with the other Coord.
Definition Coord.h:175
openvdb::v11_0::Coord::maxComponent
void maxComponent(const Coord &other)
Perform a component-wise maximum with the other Coord.
Definition Coord.h:183
openvdb::v11_0::TypeError
Definition Exceptions.h:64
openvdb::v11_0::ValueError
Definition Exceptions.h:65
openvdb::v11_0::math::CoordBBox
Axis-aligned bounding box of signed integer coordinates.
Definition Coord.h:251
openvdb::v11_0::math::CoordBBox::min
const Coord & min() const
Definition Coord.h:323
openvdb::v11_0::math::CoordBBox::max
const Coord & max() const
Definition Coord.h:324
openvdb::v11_0::math::Coord
Signed (x, y, z) 32-bit integer coordinates.
Definition Coord.h:25
openvdb::v11_0::math::Coord::y
Int32 y() const
Definition Coord.h:131
openvdb::v11_0::math::Coord::x
Int32 x() const
Definition Coord.h:130
openvdb::v11_0::math::Coord::z
Int32 z() const
Definition Coord.h:132
openvdb::v11_0::math::Mat3
3x3 matrix class.
Definition Mat3.h:29
openvdb::v11_0::math::Mat3::eq
bool eq(const Mat3 &m, T eps=1.0e-8) const
Return true if this matrix is equivalent to m within a tolerance of eps.
Definition Mat3.h:301
openvdb::v11_0::math::Mat3::det
T det() const
Determinant of matrix.
Definition Mat3.h:479
openvdb::v11_0::math::Mat4
4x4 -matrix class.
Definition Mat4.h:31
openvdb::v11_0::math::Mat4::preScale
void preScale(const Vec3< T0 > &v)
Definition Mat4.h:736
openvdb::v11_0::math::Mat4::getTranslation
Vec3< T > getTranslation() const
Return the translation component.
Definition Mat4.h:309
openvdb::v11_0::math::Mat4::preTranslate
void preTranslate(const Vec3< T0 > &tr)
Left multiples by the specified translation, i.e. Trans * (*this)
Definition Mat4.h:703
openvdb::v11_0::math::Mat4::inverse
Mat4 inverse(T tolerance=0) const
Definition Mat4.h:485
openvdb::v11_0::math::Mat4::getMat3
Mat3< T > getMat3() const
Definition Mat4.h:297
openvdb::v11_0::math::Mat4< Real >::identity
static const Mat4< Real > & identity()
Definition Mat4.h:117
openvdb::v11_0::math::Mat4::setTranslation
void setTranslation(const Vec3< T > &t)
Definition Mat4.h:314
openvdb::v11_0::math::Transform
Definition Transform.h:40
openvdb::v11_0::math::Transform::baseMap
MapBase::ConstPtr baseMap() const
Return a base pointer to the transformation map.
Definition Transform.h:131
openvdb::v11_0::math::Vec3
Definition Vec3.h:24
openvdb::v11_0::math::Vec3::x
T & x()
Reference to the component, e.g. v.x() = 4.5f;.
Definition Vec3.h:85
openvdb::v11_0::math::Vec3::eq
bool eq(const Vec3< T > &v, T eps=static_cast< T >(1.0e-7)) const
Test if "this" vector is equivalent to vector v with tolerance of eps.
Definition Vec3.h:133
openvdb::v11_0::math::Vec3::y
T & y()
Definition Vec3.h:86
openvdb::v11_0::math::Vec3::z
T & z()
Definition Vec3.h:87
openvdb::v11_0::math::Vec3::zero
static Vec3< T > zero()
Predefined constants, e.g. Vec3d v = Vec3d::xNegAxis();.
Definition Vec3.h:466
openvdb::v11_0::tools::ABTransform
This class implements the Transformer functor interface (specifically, the isAffine(),...
Definition GridTransformer.h:390
openvdb::v11_0::tools::ABTransform::transform
openvdb::Vec3R transform(const openvdb::Vec3R &pos) const
Definition GridTransformer.h:405
openvdb::v11_0::tools::ABTransform::ABTransform
ABTransform(const math::Transform &aXform, const math::Transform &bXform)
Definition GridTransformer.h:394
openvdb::v11_0::tools::ABTransform::isAffine
bool isAffine() const
Definition GridTransformer.h:401
openvdb::v11_0::tools::ABTransform::isIdentity
bool isIdentity() const
Definition GridTransformer.h:403
openvdb::v11_0::tools::ABTransform::invTransform
openvdb::Vec3R invTransform(const openvdb::Vec3R &pos) const
Definition GridTransformer.h:410
openvdb::v11_0::tools::ABTransform::getA
const math::Transform & getA() const
Definition GridTransformer.h:415
openvdb::v11_0::tools::ABTransform::getB
const math::Transform & getB() const
Definition GridTransformer.h:416
openvdb::v11_0::tools::GridResampler
Definition GridTransformer.h:163
openvdb::v11_0::tools::GridResampler::transformTiles
bool transformTiles() const
Return true if tile processing is enabled.
Definition GridTransformer.h:181
openvdb::v11_0::tools::GridResampler::applyTransform
void applyTransform(const Transformer &, const GridT &inGrid, GridT &outGrid) const
Definition GridTransformer.h:876
openvdb::v11_0::tools::GridResampler::GridResampler
GridResampler()
Definition GridTransformer.h:168
openvdb::v11_0::tools::GridResampler::setInterrupter
void setInterrupter(InterrupterType &)
Allow processing to be aborted by providing an interrupter object. The interrupter will be queried pe...
Definition GridTransformer.h:682
openvdb::v11_0::tools::GridResampler::InterruptFunc
std::function< bool(void)> InterruptFunc
Definition GridTransformer.h:166
openvdb::v11_0::tools::GridResampler::setTransformTiles
void setTransformTiles(bool b)
Enable or disable processing of tiles. (Enabled by default, except for level set grids....
Definition GridTransformer.h:179
openvdb::v11_0::tools::GridResampler::Ptr
SharedPtr< GridResampler > Ptr
Definition GridTransformer.h:165
openvdb::v11_0::tools::GridResampler::interrupt
bool interrupt() const
Definition GridTransformer.h:196
openvdb::v11_0::tools::GridResampler::operator=
GridResampler & operator=(const GridResampler &)=default
openvdb::v11_0::tools::GridResampler::transformGrid
void transformGrid(const Transformer &, const GridT &inGrid, GridT &outGrid) const
Definition GridTransformer.h:691
openvdb::v11_0::tools::GridResampler::setThreaded
void setThreaded(bool b)
Enable or disable threading. (Threading is enabled by default.)
Definition GridTransformer.h:175
openvdb::v11_0::tools::GridResampler::~GridResampler
virtual ~GridResampler()
Definition GridTransformer.h:169
openvdb::v11_0::tools::GridResampler::threaded
bool threaded() const
Return true if threading is enabled.
Definition GridTransformer.h:177
openvdb::v11_0::tools::GridResampler::GridResampler
GridResampler(const GridResampler &)=default
openvdb::v11_0::tools::GridTransformer
A GridTransformer applies a geometric transformation to an input grid using one of several sampling s...
Definition GridTransformer.h:234
openvdb::v11_0::tools::GridTransformer::~GridTransformer
~GridTransformer() override=default
openvdb::v11_0::tools::GridTransformer::operator=
GridTransformer & operator=(const GridTransformer &)=default
openvdb::v11_0::tools::GridTransformer::Ptr
SharedPtr< GridTransformer > Ptr
Definition GridTransformer.h:236
openvdb::v11_0::tools::GridTransformer::GridTransformer
GridTransformer(const Mat4R &xform)
Definition GridTransformer.h:542
openvdb::v11_0::tools::GridTransformer::GridTransformer
GridTransformer(const GridTransformer &)=default
openvdb::v11_0::tools::GridTransformer::transformGrid
void transformGrid(const GridT &inGrid, GridT &outGrid) const
Definition GridTransformer.h:701
openvdb::v11_0::tools::GridTransformer::getTransform
const Mat4R & getTransform() const
Definition GridTransformer.h:251
openvdb::v11_0::tree::IteratorRange
Definition TreeIterator.h:1303
nanovdb::CoordBBox
BBox< Coord > CoordBBox
Definition NanoVDB.h:2535
openvdb::v11_0::math::eulerAngles
Vec3< typename MatType::value_type > eulerAngles(const MatType &mat, RotationOrder rotationOrder, typename MatType::value_type eps=static_cast< typename MatType::value_type >(1.0e-8))
Return the Euler angles composing the given rotation matrix.
Definition Mat.h:333
openvdb::v11_0::math::isApproxEqual
bool isApproxEqual(const Type &a, const Type &b, const Type &tolerance)
Return true if a is equal to b to within the given tolerance.
Definition Math.h:406
openvdb::v11_0::math::scale
MatType scale(const Vec3< typename MatType::value_type > &s)
Return a matrix that scales by s.
Definition Mat.h:615
openvdb::v11_0::math::Vec3d
Vec3< double > Vec3d
Definition Vec3.h:664
openvdb::v11_0::math::isAffine
bool isAffine(const Mat4< T > &m)
Definition Mat4.h:1304
openvdb::v11_0::math::rotation
MatType rotation(const Quat< typename MatType::value_type > &q, typename MatType::value_type eps=static_cast< typename MatType::value_type >(1.0e-8))
Return the rotation matrix specified by the given quaternion.
Definition Mat.h:172
openvdb::v11_0::math::minComponent
Vec2< T > minComponent(const Vec2< T > &v1, const Vec2< T > &v2)
Return component-wise minimum of the two vectors.
Definition Vec2.h:504
openvdb::v11_0::math::Vec3i
Vec3< int32_t > Vec3i
Definition Vec3.h:661
openvdb::v11_0::math::maxComponent
Vec2< T > maxComponent(const Vec2< T > &v1, const Vec2< T > &v2)
Return component-wise maximum of the two vectors.
Definition Vec2.h:513
openvdb::v11_0::math::Z_AXIS
@ Z_AXIS
Definition Math.h:904
openvdb::v11_0::math::X_AXIS
@ X_AXIS
Definition Math.h:902
openvdb::v11_0::math::Y_AXIS
@ Y_AXIS
Definition Math.h:903
openvdb::v11_0::math::XYZ_ROTATION
@ XYZ_ROTATION
Definition Math.h:909
openvdb::v11_0::tools::composite::max
const std::enable_if<!VecTraits< T >::IsVec, T >::type & max(const T &a, const T &b)
Definition Composite.h:110
openvdb::v11_0::tools::composite::min
const std::enable_if<!VecTraits< T >::IsVec, T >::type & min(const T &a, const T &b)
Definition Composite.h:106
openvdb::v11_0::tools::local_util
Definition GridTransformer.h:272
openvdb::v11_0::tools::local_util::decompose
int decompose(const math::Mat4< T > &m, math::Vec3< T > &scale, math::Vec3< T > &rotate, math::Vec3< T > &translate)
Decompose an affine transform into scale, rotation (XYZ order), and translation components.
Definition GridTransformer.h:283
openvdb::v11_0::tools::local_util::ceilVec3
Vec3i ceilVec3(const Vec3R &v)
Definition Interpolation.h:591
openvdb::v11_0::tools::local_util::DECOMP_VALID
@ DECOMP_VALID
Definition GridTransformer.h:274
openvdb::v11_0::tools::local_util::DECOMP_INVALID
@ DECOMP_INVALID
Definition GridTransformer.h:274
openvdb::v11_0::tools::local_util::DECOMP_UNIQUE
@ DECOMP_UNIQUE
Definition GridTransformer.h:274
openvdb::v11_0::tools::local_util::floorVec3
Vec3i floorVec3(const Vec3R &v)
Definition Interpolation.h:584
openvdb::v11_0::tools::pruneLevelSet
void pruneLevelSet(TreeT &tree, bool threaded=true, size_t grainSize=1)
Reduce the memory footprint of a tree by replacing nodes whose values are all inactive with inactive ...
Definition Prune.h:390
openvdb::v11_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:267
openvdb::v11_0::tools::changeBackground
void changeBackground(TreeOrLeafManagerT &tree, const typename TreeOrLeafManagerT::ValueType &background, bool threaded=true, size_t grainSize=32)
Replace the background value in all the nodes of a tree.
Definition ChangeBackground.h:204
openvdb::v11_0::tools::resampleToMatch
void resampleToMatch(const GridType &inGrid, GridType &outGrid, Interrupter &interrupter)
Resample an input grid into an output grid of the same type such that, after resampling,...
Definition GridTransformer.h:486
openvdb::v11_0::tools::doResampleToMatch
void doResampleToMatch(const GridType &inGrid, GridType &outGrid, Interrupter &interrupter)
Definition GridTransformer.h:433
openvdb::v11_0::tree::ValueAccessor
ValueAccessorImpl< TreeType, IsSafe, MutexType, openvdb::make_index_sequence< CacheLevels > > ValueAccessor
Default alias for a ValueAccessor. This is simply a helper alias for the generic definition but takes...
Definition ValueAccessor.h:86
openvdb::v11_0::GridClass
GridClass
Definition Types.h:453
openvdb::v11_0::GRID_LEVEL_SET
@ GRID_LEVEL_SET
Definition Types.h:455
openvdb::v11_0::zeroVal
constexpr T zeroVal()
Return the value of type T that corresponds to zero.
Definition Math.h:70
openvdb::v11_0::Mat4R
math::Mat4< Real > Mat4R
Definition Types.h:101
openvdb::v11_0::BBoxd
math::BBox< Vec3d > BBoxd
Definition Types.h:84
openvdb::v11_0::Vec3R
math::Vec3< Real > Vec3R
Definition Types.h:72
openvdb::v11_0::SharedPtr
std::shared_ptr< T > SharedPtr
Definition Types.h:114
openvdb
Definition Exceptions.h:13
openvdb.h
openvdb::v11_0::tools::GridTransformer::MatrixTransform
Definition GridTransformer.h:368
openvdb::v11_0::tools::GridTransformer::MatrixTransform::invTransform
Vec3R invTransform(const Vec3R &pos) const
Definition GridTransformer.h:376
openvdb::v11_0::tools::GridTransformer::MatrixTransform::MatrixTransform
MatrixTransform()
Definition GridTransformer.h:369
openvdb::v11_0::tools::GridTransformer::MatrixTransform::isAffine
bool isAffine() const
Definition GridTransformer.h:372
openvdb::v11_0::tools::GridTransformer::MatrixTransform::invMat
Mat4R invMat
Definition GridTransformer.h:378
openvdb::v11_0::tools::GridTransformer::MatrixTransform::mat
Mat4R mat
Definition GridTransformer.h:378
openvdb::v11_0::tools::GridTransformer::MatrixTransform::transform
Vec3R transform(const Vec3R &pos) const
Definition GridTransformer.h:374
openvdb::v11_0::tools::GridTransformer::MatrixTransform::MatrixTransform
MatrixTransform(const Mat4R &xform)
Definition GridTransformer.h:370
openvdb::v11_0::tools::HalfWidthOp< bool >::eval
static bool eval(const bool &background, const Vec3d &)
Definition GridTransformer.h:477
openvdb::v11_0::tools::HalfWidthOp
Definition GridTransformer.h:465
openvdb::v11_0::tools::HalfWidthOp::eval
static ValueType eval(const ValueType &background, const Vec3d &voxelSize)
Definition GridTransformer.h:466
openvdb::v11_0::tools::Sampler
Provises a unified interface for sampling, i.e. interpolation.
Definition Interpolation.h:64
openvdb::v11_0::tools::Sampler::radius
static int radius()
openvdb::v11_0::tools::Sampler::mipmap
static bool mipmap()
openvdb::v11_0::tools::Sampler::sample
static bool sample(const TreeT &inTree, const Vec3R &inCoord, typename TreeT::ValueType &result)
Sample inTree at the floating-point index coordinate inCoord and store the result in result.
openvdb::v11_0::tools::Sampler::consistent
static bool consistent()
openvdb::v11_0::util::NullInterrupter
Base class for interrupters.
Definition NullInterrupter.h:26
OPENVDB_VERSION_NAME
#define OPENVDB_VERSION_NAME
The version namespace name for this library version.
Definition version.h.in:121
OPENVDB_USE_VERSION_NAMESPACE
#define OPENVDB_USE_VERSION_NAMESPACE
Definition version.h.in:212
OPENVDB_NUMERIC_TREE_INSTANTIATE
#define OPENVDB_NUMERIC_TREE_INSTANTIATE(Function)
Definition version.h.in:158
OPENVDB_VEC3_TREE_INSTANTIATE
#define OPENVDB_VEC3_TREE_INSTANTIATE(Function)
Definition version.h.in:159
OPENVDB_VOLUME_TREE_INSTANTIATE
#define OPENVDB_VOLUME_TREE_INSTANTIATE(Function)
Definition version.h.in:160