OpenVDB: openvdb/points/impl/PointRasterizeFrustumImpl.h Source File

OpenVDB 11.0.0

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PointRasterizeFrustumImpl.h
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1// Copyright Contributors to the OpenVDB Project
2// SPDX-License-Identifier: MPL-2.0
3//
4/// @author Dan Bailey
5///
6/// @file PointRasterizeFrustumImpl.h
7///
8
9#ifndef OPENVDB_POINTS_POINT_RASTERIZE_FRUSTUM_IMPL_HAS_BEEN_INCLUDED
10#define OPENVDB_POINTS_POINT_RASTERIZE_FRUSTUM_IMPL_HAS_BEEN_INCLUDED
11
12namespace openvdb {
13 OPENVDB_USE_VERSION_NAMESPACE
14namespace OPENVDB_VERSION_NAME {
15namespace points {
16
17/// @cond OPENVDB_DOCS_INTERNAL
18
19namespace point_rasterize_internal {
20
21
22// By default this trait simply no-op copies the filter
23template <typename FilterT>
24struct RasterGroupTraits
25{
26 using NewFilterT = FilterT;
27 static NewFilterT resolve(const FilterT& filter, const points::AttributeSet&)
28 {
29 return filter;
30 }
31};
32
33// For RasterGroups objects, this returns a new MultiGroupFilter with names-to-indices resolved
34template <>
35struct RasterGroupTraits<RasterGroups>
36{
37 using NewFilterT = points::MultiGroupFilter;
38 static NewFilterT resolve(const RasterGroups& groups, const points::AttributeSet& attributeSet)
39 {
40 return NewFilterT(groups.includeNames, groups.excludeNames, attributeSet);
41 }
42};
43
44
45// Traits to indicate bool and ValueMask are bool types
46template <typename T> struct BoolTraits { static const bool IsBool = false; };
47template <> struct BoolTraits<bool> { static const bool IsBool = true; };
48template <> struct BoolTraits<ValueMask> { static const bool IsBool = true; };
49
50
51struct TrueOp {
52 bool mOn;
53 explicit TrueOp(double scale) : mOn(scale > 0.0) { }
54 template<typename ValueType>
55 void operator()(ValueType& v) const { v = static_cast<ValueType>(mOn); }
56};
57
58
59template <typename ValueT>
60typename std::enable_if<std::is_integral<typename ValueTraits<ValueT>::ElementType>::value, ValueT>::type
61castValue(const double value)
62{
63 return ValueT(math::Ceil(value));
64}
65
66
67template <typename ValueT>
68typename std::enable_if<!std::is_integral<typename ValueTraits<ValueT>::ElementType>::value, ValueT>::type
69castValue(const double value)
70{
71 return static_cast<ValueT>(value);
72}
73
74
75template <typename ValueT>
76typename std::enable_if<!ValueTraits<ValueT>::IsVec, bool>::type
77greaterThan(const ValueT& value, const float threshold)
78{
79 return value >= static_cast<ValueT>(threshold);
80}
81
82
83template <typename ValueT>
84typename std::enable_if<ValueTraits<ValueT>::IsVec, bool>::type
85greaterThan(const ValueT& value, const float threshold)
86{
87 return static_cast<double>(value.lengthSqr()) >= threshold*threshold;
88}
89
90
91template <typename AttributeT, typename HandleT, typename StridedHandleT>
92typename std::enable_if<!ValueTraits<AttributeT>::IsVec, AttributeT>::type
93getAttributeScale(HandleT& handlePtr, StridedHandleT&, Index index)
94{
95 if (handlePtr) {
96 return handlePtr->get(index);
97 }
98 return AttributeT(1);
99}
100
101
102template <typename AttributeT, typename HandleT, typename StridedHandleT>
103typename std::enable_if<ValueTraits<AttributeT>::IsVec, AttributeT>::type
104getAttributeScale(HandleT& handlePtr, StridedHandleT& stridedHandlePtr, Index index)
105{
106 if (handlePtr) {
107 return handlePtr->get(index);
108 } else if (stridedHandlePtr) {
109 return AttributeT(
110 stridedHandlePtr->get(index, 0),
111 stridedHandlePtr->get(index, 1),
112 stridedHandlePtr->get(index, 2));
113 }
114 return AttributeT(1);
115}
116
117
118template <typename ValueT>
119struct MultiplyOp
120{
121 template <typename AttributeT>
122 static ValueT mul(const ValueT& a, const AttributeT& b)
123 {
124 return a * b;
125 }
126};
127
128template <>
129struct MultiplyOp<bool>
130{
131 template <typename AttributeT>
132 static bool mul(const bool& a, const AttributeT& b)
133 {
134 return a && (b != zeroVal<AttributeT>());
135 }
136};
137
138template <typename PointDataGridT, typename AttributeT, typename GridT,
139 typename FilterT>
140struct RasterizeOp
141{
142 using TreeT = typename GridT::TreeType;
143 using LeafT = typename TreeT::LeafNodeType;
144 using ValueT = typename TreeT::ValueType;
145 using PointLeafT = typename PointDataGridT::TreeType::LeafNodeType;
146 using PointIndexT = typename PointLeafT::ValueType;
147 using CombinableT = tbb::combinable<GridT>;
148 using SumOpT = tools::valxform::SumOp<ValueT>;
149 using MaxOpT = tools::valxform::MaxOp<ValueT>;
150 using PositionHandleT = openvdb::points::AttributeHandle<Vec3f>;
151 using VelocityHandleT = openvdb::points::AttributeHandle<Vec3f>;
152 using RadiusHandleT = openvdb::points::AttributeHandle<float>;
153
154 // to prevent checking the interrupter too frequently, only check every 32 voxels cubed
155 static const int interruptThreshold = 32*32*32;
156
157 RasterizeOp(
158 const PointDataGridT& grid,
159 const std::vector<Index64>& offsets,
160 const size_t attributeIndex,
161 const Name& velocityAttribute,
162 const Name& radiusAttribute,
163 CombinableT& combinable,
164 CombinableT* weightCombinable,
165 const bool dropBuffers,
166 const float scale,
167 const FilterT& filter,
168 const bool computeMax,
169 const bool alignedTransform,
170 const bool staticCamera,
171 const FrustumRasterizerSettings& settings,
172 const FrustumRasterizerMask& mask,
173 util::NullInterrupter* interrupt)
174 : mGrid(grid)
175 , mOffsets(offsets)
176 , mAttributeIndex(attributeIndex)
177 , mVelocityAttribute(velocityAttribute)
178 , mRadiusAttribute(radiusAttribute)
179 , mCombinable(combinable)
180 , mWeightCombinable(weightCombinable)
181 , mDropBuffers(dropBuffers)
182 , mScale(scale)
183 , mFilter(filter)
184 , mComputeMax(computeMax)
185 , mAlignedTransform(alignedTransform)
186 , mStaticCamera(staticCamera)
187 , mSettings(settings)
188 , mMask(mask)
189 , mInterrupter(interrupt) { }
190
191 template <typename PointOpT>
192 static void rasterPoint(const Coord& ijk, const double scale,
193 const AttributeT& attributeScale, PointOpT& op)
194 {
195 op(ijk, scale, attributeScale);
196 }
197
198 template <typename PointOpT>
199 static void rasterPoint(const Vec3d& position, const double scale,
200 const AttributeT& attributeScale, PointOpT& op)
201 {
202 Coord ijk = Coord::round(position);
203 op(ijk, scale, attributeScale);
204 }
205
206 template <typename SphereOpT>
207 static void rasterVoxelSphere(const Vec3d& position, const double scale,
208 const AttributeT& attributeScale, const float radius, util::NullInterrupter* interrupter, SphereOpT& op)
209 {
210 assert(radius > 0.0f);
211 Coord ijk = Coord::round(position);
212 int &i = ijk[0], &j = ijk[1], &k = ijk[2];
213 const int imin=math::Floor(position[0]-radius), imax=math::Ceil(position[0]+radius);
214 const int jmin=math::Floor(position[1]-radius), jmax=math::Ceil(position[1]+radius);
215 const int kmin=math::Floor(position[2]-radius), kmax=math::Ceil(position[2]+radius);
216
217 const bool interrupt = interrupter && (imax-imin)*(jmax-jmin)*(kmax-kmin) > interruptThreshold;
218
219 for (i = imin; i <= imax; ++i) {
220 if (interrupt && interrupter->wasInterrupted()) break;
221 const auto x2 = math::Pow2(i - position[0]);
222 for (j = jmin; j <= jmax; ++j) {
223 if (interrupt && interrupter->wasInterrupted()) break;
224 const auto x2y2 = math::Pow2(j - position[1]) + x2;
225 for (k = kmin; k <= kmax; ++k) {
226 const auto x2y2z2 = x2y2 + math::Pow2(k - position[2]);
227 op(ijk, scale, attributeScale, x2y2z2, radius*radius);
228 }
229 }
230 }
231 }
232
233 template <typename SphereOpT>
234 static void rasterApproximateFrustumSphere(const Vec3d& position, const double scale,
235 const AttributeT& attributeScale, const float radiusWS,
236 const math::Transform& frustum, const CoordBBox* clipBBox,
237 util::NullInterrupter* interrupter, SphereOpT& op)
238 {
239 Vec3d voxelSize = frustum.voxelSize(position);
240 Vec3d radius = Vec3d(radiusWS)/voxelSize;
241 CoordBBox frustumBBox(Coord::floor(position-radius), Coord::ceil(position+radius));
242
243 // if clipping to frustum is enabled, clip the index bounding box
244 if (clipBBox) {
245 frustumBBox.intersect(*clipBBox);
246 }
247
248 Vec3i outMin = frustumBBox.min().asVec3i();
249 Vec3i outMax = frustumBBox.max().asVec3i();
250
251 const bool interrupt = interrupter && frustumBBox.volume() > interruptThreshold;
252
253 // back-project each output voxel into the input tree.
254 Vec3R xyz;
255 Coord outXYZ;
256 int &x = outXYZ.x(), &y = outXYZ.y(), &z = outXYZ.z();
257 for (x = outMin.x(); x <= outMax.x(); ++x) {
258 if (interrupt && interrupter->wasInterrupted()) break;
259 xyz.x() = x;
260 for (y = outMin.y(); y <= outMax.y(); ++y) {
261 if (interrupt && interrupter->wasInterrupted()) break;
262 xyz.y() = y;
263 for (z = outMin.z(); z <= outMax.z(); ++z) {
264 xyz.z() = z;
265
266 // approximate conversion to world-space
267
268 Vec3d offset = (xyz - position) * voxelSize;
269
270 double distanceSqr = offset.dot(offset);
271
272 op(outXYZ, scale, attributeScale, distanceSqr, radiusWS*radiusWS);
273 }
274 }
275 }
276 }
277
278 template <typename SphereOpT>
279 static void rasterFrustumSphere(const Vec3d& position, const double scale,
280 const AttributeT& attributeScale, const float radiusWS,
281 const math::Transform& frustum, const CoordBBox* clipBBox,
282 util::NullInterrupter* interrupter, SphereOpT& op)
283 {
284 const Vec3d positionWS = frustum.indexToWorld(position);
285
286 BBoxd inputBBoxWS(positionWS-radiusWS, positionWS+radiusWS);
287 // Transform the corners of the input tree's bounding box
288 // and compute the enclosing bounding box in the output tree.
289 Vec3R frustumMin;
290 Vec3R frustumMax;
291 math::calculateBounds(frustum, inputBBoxWS.min(), inputBBoxWS.max(),
292 frustumMin, frustumMax);
293 CoordBBox frustumBBox(Coord::floor(frustumMin), Coord::ceil(frustumMax));
294
295 // if clipping to frustum is enabled, clip the index bounding box
296 if (clipBBox) {
297 frustumBBox.intersect(*clipBBox);
298 }
299
300 Vec3i outMin = frustumBBox.min().asVec3i();
301 Vec3i outMax = frustumBBox.max().asVec3i();
302
303 const bool interrupt = interrupter && frustumBBox.volume() > interruptThreshold;
304
305 // back-project each output voxel into the input tree.
306 Vec3R xyz;
307 Coord outXYZ;
308 int &x = outXYZ.x(), &y = outXYZ.y(), &z = outXYZ.z();
309 for (x = outMin.x(); x <= outMax.x(); ++x) {
310 if (interrupt && interrupter->wasInterrupted()) break;
311 xyz.x() = x;
312 for (y = outMin.y(); y <= outMax.y(); ++y) {
313 if (interrupt && interrupter->wasInterrupted()) break;
314 xyz.y() = y;
315 for (z = outMin.z(); z <= outMax.z(); ++z) {
316 xyz.z() = z;
317
318 Vec3R xyzWS = frustum.indexToWorld(xyz);
319
320 double xDist = xyzWS.x() - positionWS.x();
321 double yDist = xyzWS.y() - positionWS.y();
322 double zDist = xyzWS.z() - positionWS.z();
323
324 double distanceSqr = xDist*xDist+yDist*yDist+zDist*zDist;
325 op(outXYZ, scale, attributeScale, distanceSqr, radiusWS*radiusWS);
326 }
327 }
328 }
329 }
330
331 void operator()(const PointLeafT& leaf, size_t) const
332 {
333 if (mInterrupter && mInterrupter->wasInterrupted()) {
334 thread::cancelGroupExecution();
335 return;
336 }
337
338 using AccessorT = tree::ValueAccessor<typename GridT::TreeType>;
339 using MaskAccessorT = tree::ValueAccessor<const MaskTree>;
340
341 constexpr bool isBool = BoolTraits<ValueT>::IsBool;
342 const bool isFrustum = !mSettings.transform->isLinear();
343
344 const bool useRaytrace = mSettings.velocityMotionBlur || !mStaticCamera;
345 const bool useRadius = mSettings.useRadius;
346 const float radiusScale = mSettings.radiusScale;
347 const float radiusThreshold = std::sqrt(3.0f);
348
349 const float threshold = mSettings.threshold;
350 const bool scaleByVoxelVolume = !useRadius && mSettings.scaleByVoxelVolume;
351
352 const float shutterStartDt = mSettings.camera.shutterStart()/mSettings.framesPerSecond;
353 const float shutterEndDt = mSettings.camera.shutterEnd()/mSettings.framesPerSecond;
354 const int motionSteps = std::max(1, mSettings.motionSamples-1);
355
356 std::vector<Vec3d> motionPositions(motionSteps+1, Vec3d());
357 std::vector<Vec2s> frustumRadiusSizes(motionSteps+1, Vec2s());
358
359 const auto& pointsTransform = mGrid.constTransform();
360
361 const float voxelSize = static_cast<float>(mSettings.transform->voxelSize()[0]);
362
363 auto& grid = mCombinable.local();
364 auto& tree = grid.tree();
365 const auto& transform = *(mSettings.transform);
366
367 grid.setTransform(mSettings.transform->copy());
368
369 AccessorT valueAccessor(tree);
370
371 std::unique_ptr<MaskAccessorT> maskAccessor;
372 auto maskTree = mMask.getTreePtr();
373 if (maskTree) maskAccessor.reset(new MaskAccessorT(*maskTree));
374
375 const CoordBBox* clipBBox = !mMask.clipBBox().empty() ? &mMask.clipBBox() : nullptr;
376
377 std::unique_ptr<AccessorT> weightAccessor;
378 if (mWeightCombinable) {
379 auto& weightGrid = mWeightCombinable->local();
380 auto& weightTree = weightGrid.tree();
381 weightAccessor.reset(new AccessorT(weightTree));
382 }
383
384 // create a temporary tree when rasterizing with radius and accumulate
385 // or weighted average methods
386
387 std::unique_ptr<TreeT> tempTree;
388 std::unique_ptr<TreeT> tempWeightTree;
389 std::unique_ptr<AccessorT> tempValueAccessor;
390 std::unique_ptr<AccessorT> tempWeightAccessor;
391 if (useRadius && !mComputeMax) {
392 tempTree.reset(new TreeT(tree.background()));
393 tempValueAccessor.reset(new AccessorT(*tempTree));
394 if (weightAccessor) {
395 tempWeightTree.reset(new TreeT(weightAccessor->tree().background()));
396 tempWeightAccessor.reset(new AccessorT(*tempWeightTree));
397 }
398 }
399
400 // point rasterization
401
402 // impl - modify a single voxel by coord, handles temporary trees and all supported modes
403 auto doModifyVoxelOp = [&](const Coord& ijk, const double scale, const AttributeT& attributeScale,
404 const bool isTemp, const bool forceSum)
405 {
406 if (mMask && !mMask.valid(ijk, maskAccessor.get())) return;
407 if (isBool) {
408 // only modify the voxel if the attributeScale is positive and non-zero
409 if (!math::isZero<AttributeT>(attributeScale) && !math::isNegative<AttributeT>(attributeScale)) {
410 valueAccessor.modifyValue(ijk, TrueOp(scale));
411 }
412 } else {
413 ValueT weightValue = castValue<ValueT>(scale);
414 ValueT newValue = MultiplyOp<ValueT>::mul(weightValue, attributeScale);
415 if (scaleByVoxelVolume) {
416 newValue /= static_cast<ValueT>(transform.voxelSize(ijk.asVec3d()).product());
417 }
418 if (point_rasterize_internal::greaterThan(newValue, threshold)) {
419 if (isTemp) {
420 tempValueAccessor->modifyValue(ijk, MaxOpT(newValue));
421 if (tempWeightAccessor) {
422 tempWeightAccessor->modifyValue(ijk, MaxOpT(weightValue));
423 }
424 } else {
425 if (mComputeMax && !forceSum) {
426 valueAccessor.modifyValue(ijk, MaxOpT(newValue));
427 } else {
428 valueAccessor.modifyValue(ijk, SumOpT(newValue));
429 }
430 if (weightAccessor) {
431 weightAccessor->modifyValue(ijk, SumOpT(weightValue));
432 }
433 }
434 }
435 }
436 };
437
438 // modify a single voxel by coord, disable temporary trees
439 auto modifyVoxelOp = [&](const Coord& ijk, const double scale, const AttributeT& attributeScale)
440 {
441 doModifyVoxelOp(ijk, scale, attributeScale, /*isTemp=*/false, /*forceSum=*/false);
442 };
443
444 // sum a single voxel by coord, no temporary trees or maximum mode
445 auto sumVoxelOp = [&](const Coord& ijk, const double scale, const AttributeT& attributeScale)
446 {
447 doModifyVoxelOp(ijk, scale, attributeScale, /*isTemp=*/false, /*forceSum=*/true);
448 };
449
450 // sphere rasterization
451
452 // impl - modify a single voxel by coord based on distance from sphere origin
453 auto doModifyVoxelByDistanceOp = [&](const Coord& ijk, const double scale, const AttributeT& attributeScale,
454 const double distanceSqr, const double radiusSqr, const bool isTemp)
455 {
456 if (distanceSqr >= radiusSqr) return;
457 if (isBool) {
458 valueAccessor.modifyValue(ijk, TrueOp(scale));
459 } else {
460 double distance = std::sqrt(distanceSqr);
461 double radius = std::sqrt(radiusSqr);
462 double result = 1.0 - distance/radius;
463 doModifyVoxelOp(ijk, result * scale, attributeScale, isTemp, /*forceSum=*/false);
464 }
465 };
466
467 // modify a single voxel by coord based on distance from sphere origin, disable temporary trees
468 auto modifyVoxelByDistanceOp = [&](const Coord& ijk, const double scale, const AttributeT& attributeScale,
469 const double distanceSqr, const double radiusSqr)
470 {
471 doModifyVoxelByDistanceOp(ijk, scale, attributeScale, distanceSqr, radiusSqr, /*isTemp=*/false);
472 };
473
474 // modify a single voxel by coord based on distance from sphere origin, enable temporary trees
475 auto modifyTempVoxelByDistanceOp = [&](const Coord& ijk, const double scale, const AttributeT& attributeScale,
476 const double distanceSqr, const double radiusSqr)
477 {
478 doModifyVoxelByDistanceOp(ijk, scale, attributeScale, distanceSqr, radiusSqr, /*isTemp=*/true);
479 };
480
481 typename points::AttributeHandle<AttributeT>::Ptr attributeHandle;
482 using ElementT = typename ValueTraits<AttributeT>::ElementType;
483 typename points::AttributeHandle<ElementT>::Ptr stridedAttributeHandle;
484
485 if (mAttributeIndex != points::AttributeSet::INVALID_POS) {
486 const auto& attributeArray = leaf.constAttributeArray(mAttributeIndex);
487 if (attributeArray.stride() == 3) {
488 stridedAttributeHandle = points::AttributeHandle<ElementT>::create(attributeArray);
489 } else {
490 attributeHandle = points::AttributeHandle<AttributeT>::create(attributeArray);
491 }
492 }
493
494 size_t positionIndex = leaf.attributeSet().find("P");
495 size_t velocityIndex = leaf.attributeSet().find(mVelocityAttribute);
496 size_t radiusIndex = leaf.attributeSet().find(mRadiusAttribute);
497
498 auto positionHandle = PositionHandleT::create(
499 leaf.constAttributeArray(positionIndex));
500 auto velocityHandle = (useRaytrace && leaf.hasAttribute(velocityIndex)) ?
501 VelocityHandleT::create(leaf.constAttributeArray(velocityIndex)) :
502 VelocityHandleT::Ptr();
503 auto radiusHandle = (useRadius && leaf.hasAttribute(radiusIndex)) ?
504 RadiusHandleT::create(leaf.constAttributeArray(radiusIndex)) :
505 RadiusHandleT::Ptr();
506
507 for (auto iter = leaf.beginIndexOn(mFilter); iter; ++iter) {
508
509 // read attribute value if it exists, attributes with stride 3 are composited
510 // into a vector grid such as float[3] => vec3s
511
512 const AttributeT attributeScale = getAttributeScale<AttributeT>(
513 attributeHandle, stridedAttributeHandle, *iter);
514
515 float radiusWS = 1.0f, radius = 1.0f;
516 if (useRadius) {
517 radiusWS *= radiusScale;
518 if (radiusHandle) radiusWS *= radiusHandle->get(*iter);
519 if (isFrustum) {
520 radius = radiusWS;
521 } else if (voxelSize > 0.0f) {
522 radius = radiusWS / voxelSize;
523 }
524 }
525
526 // frustum thresholding is done later to factor in changing voxel sizes
527
528 bool doRadius = useRadius;
529 if (!isFrustum && radius < radiusThreshold) {
530 doRadius = false;
531 }
532
533 float increment = shutterEndDt - shutterStartDt;
534
535 // disable ray-tracing if velocity is very small
536
537 openvdb::Vec3f velocity(0.0f);
538 bool doRaytrace = useRaytrace;
539 if (doRaytrace) {
540 if (increment < openvdb::math::Delta<float>::value()) {
541 doRaytrace = false;
542 } else {
543 if (velocityHandle) velocity = velocityHandle->get(*iter);
544 if (mStaticCamera && velocity.lengthSqr() < openvdb::math::Delta<float>::value()) {
545 doRaytrace = false;
546 }
547 }
548 }
549
550 if (motionSteps > 1) increment /= float(motionSteps);
551
552 Vec3d position = positionHandle->get(*iter) + iter.getCoord().asVec3d();
553
554 if (doRaytrace) {
555 // raytracing is done in index space
556 position = pointsTransform.indexToWorld(position);
557
558 for (int motionStep = 0; motionStep <= motionSteps; motionStep++) {
559
560 float offset = motionStep == motionSteps ? shutterEndDt :
561 (shutterStartDt + increment * static_cast<float>(motionStep));
562 Vec3d samplePosition = position + velocity * offset;
563
564 const math::Transform* sampleTransform = &transform;
565 if (!mSettings.camera.isStatic()) {
566 sampleTransform = &mSettings.camera.transform(motionStep);
567 if (mSettings.camera.hasWeight(motionStep)) {
568 const float weight = mSettings.camera.weight(motionStep);
569 const Vec3d referencePosition = transform.worldToIndex(samplePosition);
570 const Vec3d adjustedPosition = sampleTransform->worldToIndex(samplePosition);
571 motionPositions[motionStep] = referencePosition + (adjustedPosition - referencePosition) * weight;
572 } else {
573 motionPositions[motionStep] = sampleTransform->worldToIndex(samplePosition);
574 }
575 } else {
576 motionPositions[motionStep] = sampleTransform->worldToIndex(samplePosition);
577 }
578 if (doRadius && isFrustum) {
579 Vec3d left = sampleTransform->worldToIndex(samplePosition - Vec3d(radiusWS, 0, 0));
580 Vec3d right = sampleTransform->worldToIndex(samplePosition + Vec3d(radiusWS, 0, 0));
581 float width = static_cast<float>((right - left).length());
582 Vec3d top = sampleTransform->worldToIndex(samplePosition + Vec3d(0, radiusWS, 0));
583 Vec3d bottom = sampleTransform->worldToIndex(samplePosition - Vec3d(0, radiusWS, 0));
584 float height = static_cast<float>((top - bottom).length());
585 frustumRadiusSizes[motionStep].x() = width;
586 frustumRadiusSizes[motionStep].y() = height;
587 }
588 }
589
590 double totalDistance = 0.0;
591 for (size_t i = 0; i < motionPositions.size()-1; i++) {
592 Vec3d direction = motionPositions[i+1] - motionPositions[i];
593 double distance = direction.length();
594 totalDistance += distance;
595 }
596
597 double distanceWeight = totalDistance > 0.0 ? 1.0 / totalDistance : 1.0;
598
599 if (doRadius && !mComputeMax) {
600 // mark all voxels inactive
601 for (auto leaf = tempTree->beginLeaf(); leaf; ++leaf) {
602 leaf->setValuesOff();
603 }
604 if (tempWeightAccessor) {
605 for (auto leaf = tempWeightTree->beginLeaf(); leaf; ++leaf) {
606 leaf->setValuesOff();
607 }
608 }
609 }
610
611 for (int motionStep = 0; motionStep < motionSteps; motionStep++) {
612
613 Vec3d startPosition = motionPositions[motionStep];
614 Vec3d endPosition = motionPositions[motionStep+1];
615
616 Vec3d direction(endPosition - startPosition);
617 double distance = direction.length();
618
619 // if rasterizing into a frustum grid, compute the index-space radii for start
620 // and end positions and if below the radius threshold disable using radius
621
622 float maxRadius = radius;
623
624 if (doRadius && isFrustum) {
625 const Vec2s& startRadius = frustumRadiusSizes[motionStep];
626 const Vec2s& endRadius = frustumRadiusSizes[motionStep+1];
627
628 if (startRadius[0] < radiusThreshold && startRadius[1] < radiusThreshold &&
629 endRadius[0] < radiusThreshold && endRadius[1] < radiusThreshold) {
630 doRadius = false;
631 } else {
632 // max radius is the largest index-space radius factoring in
633 // that in frustum space a sphere is not rasterized as spherical
634 maxRadius = std::max(startRadius[0], startRadius[1]);
635 maxRadius = std::max(maxRadius, endRadius[0]);
636 maxRadius = std::max(maxRadius, endRadius[1]);
637 }
638 }
639
640 if (doRadius) {
641 distanceWeight = std::min(distanceWeight, 1.0);
642
643 // these arbitrary constants are how tightly spheres are packed together
644 // irrespective of how large they are in index-space - if it is too low, the shape of
645 // the individual spheres becomes visible in the rasterized path,
646 // if it is too high, rasterization becomes less efficient with
647 // diminishing returns towards the accuracy of the rasterized path
648 double spherePacking = mSettings.accurateSphereMotionBlur ? 4.0 : 2.0;
649
650 const int steps = std::max(2, math::Ceil(distance * spherePacking / double(maxRadius)) + 1);
651
652 Vec3d sample(startPosition);
653 const Vec3d offset(direction / (steps-1));
654
655 for (int step = 0; step < steps; step++) {
656 if (isFrustum) {
657 if (mComputeMax) {
658 if (mSettings.accurateFrustumRadius) {
659 this->rasterFrustumSphere(sample, mScale * distanceWeight,
660 attributeScale, radiusWS, transform, clipBBox, mInterrupter, modifyVoxelByDistanceOp);
661 } else {
662 this->rasterApproximateFrustumSphere(sample, mScale * distanceWeight,
663 attributeScale, radiusWS, transform, clipBBox, mInterrupter, modifyVoxelByDistanceOp);
664 }
665 } else {
666 if (mSettings.accurateFrustumRadius) {
667 this->rasterFrustumSphere(sample, mScale * distanceWeight,
668 attributeScale, radiusWS, transform, clipBBox, mInterrupter, modifyTempVoxelByDistanceOp);
669 } else {
670 this->rasterApproximateFrustumSphere(sample, mScale * distanceWeight,
671 attributeScale, radiusWS, transform, clipBBox, mInterrupter, modifyTempVoxelByDistanceOp);
672 }
673 }
674 } else {
675 if (mComputeMax) {
676 this->rasterVoxelSphere(sample, mScale * distanceWeight,
677 attributeScale, radius, mInterrupter, modifyVoxelByDistanceOp);
678 } else {
679 this->rasterVoxelSphere(sample, mScale * distanceWeight,
680 attributeScale, radius, mInterrupter, modifyTempVoxelByDistanceOp);
681 }
682 }
683 if (step < (steps-1)) sample += offset;
684 else sample = endPosition;
685 }
686 } else {
687 // compute direction and store vector length as max time
688 mDdaRay.setMinTime(math::Delta<double>::value());
689 mDdaRay.setMaxTime(std::max(distance, math::Delta<double>::value()*2.0));
690
691 // DDA requires normalized directions
692 direction.normalize();
693 mDdaRay.setDir(direction);
694
695 // dda assumes node-centered ray-tracing, so compensate by adding half a voxel first
696 mDdaRay.setEye(startPosition + Vec3d(0.5));
697
698 // clip the ray to the frustum bounding box
699 if (clipBBox) {
700 mDdaRay.clip(*clipBBox);
701 }
702
703 // first rasterization in a subsequent DDA traversal should always sum contributions
704 // in order to smoothly stitch the beginning and end of two rays together
705 bool forceSum = motionStep > 0;
706
707 mDda.init(mDdaRay);
708 while (true) {
709 const Coord& voxel = mDda.voxel();
710 double delta = (mDda.next() - mDda.time()) * distanceWeight;
711 if (forceSum) {
712 this->rasterPoint(voxel, mScale * delta,
713 attributeScale, sumVoxelOp);
714 forceSum = false;
715 } else {
716 this->rasterPoint(voxel, mScale * delta,
717 attributeScale, modifyVoxelOp);
718 }
719 if (!mDda.step()) break;
720 }
721 }
722 }
723
724 if (doRadius && !mComputeMax) {
725 // copy values into valueAccessor
726 for (auto iter = tempTree->cbeginValueOn(); iter; ++iter) {
727 valueAccessor.modifyValue(iter.getCoord(), SumOpT(*iter));
728 }
729
730 // copy values into weightAccessor
731 if (weightAccessor) {
732 for (auto iter = tempWeightTree->cbeginValueOn(); iter; ++iter) {
733 weightAccessor->modifyValue(iter.getCoord(), SumOpT(*iter));
734 }
735 }
736 }
737
738 } else {
739 if (!mAlignedTransform) {
740 position = transform.worldToIndex(
741 pointsTransform.indexToWorld(position));
742 }
743
744 if (doRadius) {
745 if (isFrustum) {
746 if (mSettings.accurateFrustumRadius) {
747 this->rasterFrustumSphere(position, mScale, attributeScale,
748 radiusWS, transform, clipBBox, mInterrupter, modifyVoxelByDistanceOp);
749 } else {
750 this->rasterApproximateFrustumSphere(position, mScale, attributeScale,
751 radiusWS, transform, clipBBox, mInterrupter, modifyVoxelByDistanceOp);
752 }
753 } else {
754 this->rasterVoxelSphere(position, mScale, attributeScale,
755 radius, mInterrupter, modifyVoxelByDistanceOp);
756 }
757 } else {
758 this->rasterPoint(position, mScale, attributeScale, modifyVoxelOp);
759 }
760 }
761 }
762
763 // if drop buffers is enabled, swap the leaf buffer with a partial (empty) buffer,
764 // so the voxel data is de-allocated to reduce memory
765
766 if (mDropBuffers) {
767 typename PointLeafT::Buffer emptyBuffer(PartialCreate(), zeroVal<PointIndexT>());
768 (const_cast<PointLeafT&>(leaf)).swap(emptyBuffer);
769 }
770 }
771
772// TODO: would be better to move some of the immutable values into a shared struct
773
774private:
775 mutable math::Ray<double> mDdaRay;
776 mutable math::DDA<openvdb::math::Ray<double>> mDda;
777 const PointDataGridT& mGrid;
778 const std::vector<Index64>& mOffsets;
779 const size_t mAttributeIndex;
780 const Name mVelocityAttribute;
781 const Name mRadiusAttribute;
782 CombinableT& mCombinable;
783 CombinableT* mWeightCombinable;
784 const bool mDropBuffers;
785 const float mScale;
786 const FilterT& mFilter;
787 const bool mComputeMax;
788 const bool mAlignedTransform;
789 const bool mStaticCamera;
790 const FrustumRasterizerSettings& mSettings;
791 const FrustumRasterizerMask& mMask;
792 util::NullInterrupter* mInterrupter;
793}; // struct RasterizeOp
794
795
796/// @brief Combines multiple grids into one by stealing leaf nodes and summing voxel values
797/// This class is designed to work with thread local storage containers such as tbb::combinable
798template<typename GridT>
799struct GridCombinerOp
800{
801 using CombinableT = typename tbb::combinable<GridT>;
802
803 using TreeT = typename GridT::TreeType;
804 using LeafT = typename TreeT::LeafNodeType;
805 using ValueType = typename TreeT::ValueType;
806 using SumOpT = tools::valxform::SumOp<typename TreeT::ValueType>;
807 using MaxOpT = tools::valxform::MaxOp<typename TreeT::ValueType>;
808
809 GridCombinerOp(GridT& grid, bool sum)
810 : mTree(grid.tree())
811 , mSum(sum) {}
812
813 void operator()(const GridT& grid)
814 {
815 for (auto leaf = grid.tree().beginLeaf(); leaf; ++leaf) {
816 auto* newLeaf = mTree.probeLeaf(leaf->origin());
817 if (!newLeaf) {
818 // if the leaf doesn't yet exist in the new tree, steal it
819 auto& tree = const_cast<GridT&>(grid).tree();
820 mTree.addLeaf(tree.template stealNode<LeafT>(leaf->origin(),
821 zeroVal<ValueType>(), false));
822 }
823 else {
824 // otherwise increment existing values
825 if (mSum) {
826 for (auto iter = leaf->cbeginValueOn(); iter; ++iter) {
827 newLeaf->modifyValue(iter.offset(), SumOpT(ValueType(*iter)));
828 }
829 } else {
830 for (auto iter = leaf->cbeginValueOn(); iter; ++iter) {
831 newLeaf->modifyValue(iter.offset(), MaxOpT(ValueType(*iter)));
832 }
833 }
834 }
835 }
836 }
837
838private:
839 TreeT& mTree;
840 bool mSum;
841}; // struct GridCombinerOp
842
843
844template<typename GridT>
845struct CombinableTraits {
846 using OpT = GridCombinerOp<GridT>;
847 using T = typename OpT::CombinableT;
848};
849
850
851template <typename PointDataGridT>
852class GridToRasterize
853{
854public:
855 using GridPtr = typename PointDataGridT::Ptr;
856 using GridConstPtr = typename PointDataGridT::ConstPtr;
857 using PointDataTreeT = typename PointDataGridT::TreeType;
858 using PointDataLeafT = typename PointDataTreeT::LeafNodeType;
859
860 GridToRasterize(GridPtr& grid, bool stream,
861 const FrustumRasterizerSettings& settings,
862 const FrustumRasterizerMask& mask)
863 : mGrid(grid)
864 , mStream(stream)
865 , mSettings(settings)
866 , mMask(mask) { }
867
868 GridToRasterize(GridConstPtr& grid, const FrustumRasterizerSettings& settings,
869 const FrustumRasterizerMask& mask)
870 : mGrid(ConstPtrCast<PointDataGridT>(grid))
871 , mStream(false)
872 , mSettings(settings)
873 , mMask(mask) { }
874
875 const typename PointDataGridT::TreeType& tree() const
876 {
877 return mGrid->constTree();
878 }
879
880 void setLeafPercentage(int percentage)
881 {
882 mLeafPercentage = math::Clamp(percentage, 0, 100);
883 }
884
885 int leafPercentage() const
886 {
887 return mLeafPercentage;
888 }
889
890 size_t memUsage() const
891 {
892 return mGrid->memUsage() + mLeafOffsets.capacity();
893 }
894
895 template <typename AttributeT, typename GridT, typename FilterT>
896 void rasterize(const Name& attribute,
897 typename CombinableTraits<GridT>::T& combiner, typename CombinableTraits<GridT>::T* weightCombiner,
898 const float scale, const FilterT& groupFilter, const bool computeMax, const bool reduceMemory,
899 util::NullInterrupter* interrupter)
900 {
901 using point_rasterize_internal::RasterizeOp;
902
903 const auto& velocityAttribute = mSettings.velocityMotionBlur ?
904 mSettings.velocityAttribute : "";
905 const auto& radiusAttribute = mSettings.useRadius ?
906 mSettings.radiusAttribute : "";
907
908 bool isPositionAttribute = attribute == "P";
909 bool isVelocityAttribute = attribute == mSettings.velocityAttribute;
910 bool isRadiusAttribute = attribute == mSettings.radiusAttribute;
911
912 // find the attribute index
913 const auto& attributeSet = mGrid->constTree().cbeginLeaf()->attributeSet();
914 const size_t attributeIndex = attributeSet.find(attribute);
915 const bool attributeExists = attributeIndex != points::AttributeSet::INVALID_POS;
916
917 if (attributeExists)
918 {
919 // throw if attribute type doesn't match AttributeT
920 const auto* attributeArray = attributeSet.getConst(attributeIndex);
921 const Index stride = bool(attributeArray) ? attributeArray->stride() : Index(1);
922 const auto& actualValueType = attributeSet.descriptor().valueType(attributeIndex);
923 const auto requestedValueType = Name(typeNameAsString<AttributeT>());
924 const bool packVector = stride == 3 &&
925 ((actualValueType == typeNameAsString<float>() &&
926 requestedValueType == typeNameAsString<Vec3f>()) ||
927 (actualValueType == typeNameAsString<double>() &&
928 requestedValueType == typeNameAsString<Vec3d>()) ||
929 (actualValueType == typeNameAsString<int32_t>() &&
930 requestedValueType == typeNameAsString<Vec3I>()));
931 if (!packVector && actualValueType != requestedValueType) {
932 OPENVDB_THROW(TypeError,
933 "Attribute type requested for rasterization \"" << requestedValueType << "\""
934 " must match attribute value type \"" << actualValueType << "\"");
935 }
936 }
937
938 tree::LeafManager<PointDataTreeT> leafManager(mGrid->tree());
939
940 // de-allocate voxel buffers if the points are being streamed and the caches are being released
941 const bool dropBuffers = mStream && reduceMemory;
942
943 // turn RasterGroups into a MultiGroupFilter for this VDB Grid (if applicable)
944 using ResolvedFilterT = typename point_rasterize_internal::RasterGroupTraits<FilterT>::NewFilterT;
945 auto resolvedFilter = point_rasterize_internal::RasterGroupTraits<FilterT>::resolve(
946 groupFilter, attributeSet);
947
948 // generate leaf offsets (if necessary)
949 if (mLeafOffsets.empty()) {
950 openvdb::points::pointOffsets(mLeafOffsets, mGrid->constTree(), resolvedFilter,
951 /*inCoreOnly=*/false, mSettings.threaded);
952 }
953
954 // set streaming arbitrary attribute array flags
955 if (mStream) {
956 if (attributeExists && !isPositionAttribute && !isVelocityAttribute && !isRadiusAttribute) {
957 leafManager.foreach(
958 [&](PointDataLeafT& leaf, size_t /*idx*/) {
959 leaf.attributeArray(attributeIndex).setStreaming(true);
960 },
961 mSettings.threaded);
962 }
963
964 if (reduceMemory) {
965 size_t positionIndex = attributeSet.find("P");
966 leafManager.foreach(
967 [&](PointDataLeafT& leaf, size_t /*idx*/) {
968 leaf.attributeArray(positionIndex).setStreaming(true);
969 },
970 mSettings.threaded);
971 if (mSettings.velocityMotionBlur || !mSettings.camera.isStatic()) {
972 size_t velocityIndex = attributeSet.find(velocityAttribute);
973 if (velocityIndex != points::AttributeSet::INVALID_POS) {
974 leafManager.foreach(
975 [&](PointDataLeafT& leaf, size_t /*idx*/) {
976 leaf.attributeArray(velocityIndex).setStreaming(true);
977 },
978 mSettings.threaded);
979 }
980 }
981 if (mSettings.useRadius) {
982 size_t radiusIndex = attributeSet.find(radiusAttribute);
983 if (radiusIndex != points::AttributeSet::INVALID_POS) {
984 leafManager.foreach(
985 [&](PointDataLeafT& leaf, size_t /*idx*/) {
986 leaf.attributeArray(radiusIndex).setStreaming(true);
987 },
988 mSettings.threaded);
989 }
990 }
991 }
992 }
993
994 const bool alignedTransform = *(mSettings.transform) == mGrid->constTransform();
995
996 RasterizeOp<PointDataGridT, AttributeT, GridT, ResolvedFilterT> rasterizeOp(
997 *mGrid, mLeafOffsets, attributeIndex, velocityAttribute, radiusAttribute, combiner, weightCombiner,
998 dropBuffers, scale, resolvedFilter, computeMax, alignedTransform, mSettings.camera.isStatic(),
999 mSettings, mMask, interrupter);
1000 leafManager.foreach(rasterizeOp, mSettings.threaded);
1001
1002 // clean up leaf offsets (if reduce memory is enabled)
1003 if (reduceMemory && !mLeafOffsets.empty()) {
1004 mLeafOffsets.clear();
1005 // de-allocate the vector data to ensure we keep memory footprint as low as possible
1006 mLeafOffsets.shrink_to_fit();
1007 }
1008 }
1009
1010private:
1011 GridPtr mGrid;
1012 const bool mStream;
1013 const FrustumRasterizerSettings& mSettings;
1014 const FrustumRasterizerMask& mMask;
1015 int mLeafPercentage = -1;
1016 std::vector<Index64> mLeafOffsets;
1017}; // class GridToRasterize
1018
1019
1020template <typename ValueT>
1021typename std::enable_if<!ValueTraits<ValueT>::IsVec, ValueT>::type
1022computeWeightedValue(const ValueT& value, const ValueT& weight)
1023{
1024 constexpr bool isSignedInt = std::is_integral<ValueT>() && std::is_signed<ValueT>();
1025
1026 if (!math::isFinite(weight) || math::isApproxZero(weight) ||
1027 (isSignedInt && math::isNegative(weight))) {
1028 return zeroVal<ValueT>();
1029 } else {
1030 return value / weight;
1031 }
1032}
1033
1034
1035template <typename ValueT>
1036typename std::enable_if<ValueTraits<ValueT>::IsVec, ValueT>::type
1037computeWeightedValue(const ValueT& value, const ValueT& weight)
1038{
1039 using ElementT = typename ValueTraits<ValueT>::ElementType;
1040
1041 constexpr bool isSignedInt = std::is_integral<ElementT>() && std::is_signed<ElementT>();
1042
1043 ValueT result(value);
1044 for (int i=0; i<ValueTraits<ValueT>::Size; ++i) {
1045 if (!math::isFinite(weight[i]) || math::isApproxZero(weight[i]) ||
1046 (isSignedInt && math::isNegative(weight[i]))) {
1047 result[i] = zeroVal<ElementT>();
1048 } else {
1049 result[i] = value[i] / weight[i];
1050 }
1051 }
1052 return result;
1053}
1054
1055
1056} // namespace point_rasterize_internal
1057
1058/// @endcond
1059
1060////////////////////////////////////////////////////////////////////////////
1061
1062
1063RasterCamera::RasterCamera(const math::Transform& transform)
1064 : mTransforms{transform}
1065 , mWeights{1} { }
1066
1067 bool RasterCamera::isStatic() const
1068{
1069 return mTransforms.size() <= 1;
1070}
1071
1072 void RasterCamera::clear()
1073{
1074 mTransforms.clear();
1075 mWeights.clear();
1076}
1077
1078 void RasterCamera::appendTransform(const math::Transform& transform, float weight)
1079{
1080 mTransforms.push_back(transform);
1081 mWeights.push_back(weight);
1082}
1083
1084 size_t RasterCamera::size() const
1085{
1086 return mTransforms.size();
1087}
1088
1089 void RasterCamera::simplify()
1090{
1091 // if two or more identical transforms, only keep one
1092 if (mTransforms.size() >= 2) {
1093 const auto& transform = mTransforms.front();
1094 bool isStatic = true;
1095 for (const auto& testTransform : mTransforms) {
1096 if (transform != testTransform) {
1097 isStatic = false;
1098 }
1099 }
1100 if (isStatic) {
1101 while (mTransforms.size() > 1) {
1102 mTransforms.pop_back();
1103 }
1104 }
1105 }
1106 // if all weights are equal to one, delete the weights array
1107 if (!mWeights.empty()) {
1108 bool hasWeight = false;
1109 for (Index i = 0; i < mWeights.size(); i++) {
1110 if (this->hasWeight(i)) {
1111 hasWeight = true;
1112 break;
1113 }
1114 }
1115 if (!hasWeight) mWeights.clear();
1116 }
1117}
1118
1119 bool RasterCamera::hasWeight(Index i) const
1120{
1121 if (mWeights.empty()) return false;
1122 assert(i < mWeights.size());
1123 return !openvdb::math::isApproxEqual(mWeights[i], 1.0f, 1e-3f);
1124}
1125
1126 float RasterCamera::weight(Index i) const
1127{
1128 if (mWeights.empty()) {
1129 return 1.0f;
1130 } else {
1131 assert(i < mWeights.size());
1132 return mWeights[i];
1133 }
1134}
1135
1136 const math::Transform& RasterCamera::transform(Index i) const
1137{
1138 if (mTransforms.size() == 1) {
1139 return mTransforms.front();
1140 } else {
1141 assert(i < mTransforms.size());
1142 return mTransforms[i];
1143 }
1144}
1145
1146 const math::Transform& RasterCamera::firstTransform() const
1147{
1148 assert(!mTransforms.empty());
1149 return mTransforms.front();
1150}
1151
1152 const math::Transform& RasterCamera::lastTransform() const
1153{
1154 assert(!mTransforms.empty());
1155 return mTransforms.back();
1156}
1157
1158 void RasterCamera::setShutter(float start, float end)
1159{
1160 mShutterStart = start;
1161 mShutterEnd = end;
1162}
1163
1164 float RasterCamera::shutterStart() const
1165{
1166 return mShutterStart;
1167}
1168
1169 float RasterCamera::shutterEnd() const
1170{
1171 return mShutterEnd;
1172}
1173
1174
1175////////////////////////////////////////////////////////////////////////////
1176
1177
1178 FrustumRasterizerMask::FrustumRasterizerMask( const math::Transform& transform,
1179 const MaskGrid* mask,
1180 const BBoxd& bbox,
1181 const bool clipToFrustum,
1182 const bool invertMask)
1183 : mMask()
1184 , mClipBBox()
1185 , mInvert(invertMask)
1186{
1187 // TODO: the current OpenVDB implementation for resampling masks is particularly slow,
1188 // this is primarily because it uses a scatter reduction-style method that only samples
1189 // and generates leaf nodes and relies on pruning to generate tiles, this could be
1190 // significantly improved!
1191
1192 // convert world-space clip mask to index-space
1193 if (mask) {
1194 // resample mask to index space
1195 mMask = MaskGrid::create();
1196 mMask->setTransform(transform.copy());
1197 tools::resampleToMatch<tools::PointSampler>(*mask, *mMask);
1198
1199 // prune the clip mask
1200 tools::prune(mMask->tree());
1201 }
1202
1203 // convert world-space clip bbox to index-space
1204 if (!bbox.empty()) {
1205 // create world-space mask (with identity linear transform)
1206 MaskGrid::Ptr tempMask = MaskGrid::create();
1207 CoordBBox coordBBox(Coord::floor(bbox.min()),
1208 Coord::ceil(bbox.max()));
1209 tempMask->sparseFill(coordBBox, true, true);
1210
1211 // resample mask to index space
1212 MaskGrid::Ptr bboxMask = MaskGrid::create();
1213 bboxMask->setTransform(mMask ? mMask->transformPtr() : transform.copy());
1214 tools::resampleToMatch<tools::PointSampler>(*tempMask, *bboxMask);
1215
1216 // replace or union the mask
1217 if (mMask) {
1218 mMask->topologyUnion(*bboxMask);
1219 } else {
1220 mMask = bboxMask;
1221 }
1222 }
1223
1224 if (clipToFrustum) {
1225 auto frustumMap = transform.template constMap<math::NonlinearFrustumMap>();
1226 if (frustumMap) {
1227 const auto& frustumBBox = frustumMap->getBBox();
1228 mClipBBox.reset(Coord::floor(frustumBBox.min()),
1229 Coord::ceil(frustumBBox.max()));
1230 }
1231 }
1232}
1233
1234FrustumRasterizerMask::operator bool() const
1235{
1236 return mMask || !mClipBBox.empty();
1237}
1238
1239 MaskTree::ConstPtr
1240FrustumRasterizerMask::getTreePtr() const
1241{
1242 return mMask ? mMask->treePtr() : MaskTree::ConstPtr();
1243}
1244
1245const CoordBBox&
1246FrustumRasterizerMask::clipBBox() const
1247{
1248 return mClipBBox;
1249}
1250
1251bool
1252FrustumRasterizerMask::valid(const Coord& ijk, const tree::ValueAccessor<const MaskTree>* acc) const
1253{
1254 const bool maskValue = acc ? acc->isValueOn(ijk) : true;
1255 const bool insideMask = mInvert ? !maskValue : maskValue;
1256 const bool insideFrustum = mClipBBox.empty() ? true : mClipBBox.isInside(ijk);
1257 return insideMask && insideFrustum;
1258}
1259
1260
1261////////////////////////////////////////////////////////////////////////////
1262
1263
1264template <typename PointDataGridT>
1265 FrustumRasterizer<PointDataGridT>::FrustumRasterizer(const FrustumRasterizerSettings& settings,
1266 const FrustumRasterizerMask& mask,
1267 util::NullInterrupter* interrupt)
1268 : mSettings(settings)
1269 , mMask(mask)
1270 , mInterrupter(interrupt)
1271{
1272 if (mSettings.velocityAttribute.empty() && mSettings.velocityMotionBlur) {
1273 OPENVDB_THROW(ValueError,
1274 "Using velocity motion blur during rasterization requires a velocity attribute.");
1275 }
1276}
1277
1278template <typename PointDataGridT>
1279void
1280FrustumRasterizer<PointDataGridT>::addPoints(GridConstPtr& grid)
1281{
1282 // skip any empty grids
1283 if (!grid || grid->tree().empty()) return;
1284
1285 // note that streaming is not possible with a const grid
1286 mPointGrids.emplace_back(grid, mSettings, mMask);
1287}
1288
1289template <typename PointDataGridT>
1290void
1291 FrustumRasterizer<PointDataGridT>::addPoints(GridPtr& grid, bool stream)
1292{
1293 // skip any empty grids
1294 if (!grid || grid->tree().empty()) return;
1295
1296 mPointGrids.emplace_back(grid, stream, mSettings, mMask);
1297}
1298
1299template <typename PointDataGridT>
1300void
1301FrustumRasterizer<PointDataGridT>::clear()
1302{
1303 mPointGrids.clear();
1304}
1305
1306template <typename PointDataGridT>
1307size_t
1308FrustumRasterizer<PointDataGridT>::size() const
1309{
1310 return mPointGrids.size();
1311}
1312
1313template <typename PointDataGridT>
1314size_t
1315FrustumRasterizer<PointDataGridT>::memUsage() const
1316{
1317 size_t mem = sizeof(*this) + sizeof(mPointGrids);
1318 for (const auto& grid : mPointGrids) {
1319 mem += grid.memUsage();
1320 }
1321 return mem;
1322}
1323
1324template <typename PointDataGridT>
1325template <typename FilterT>
1326 FloatGrid::Ptr
1327FrustumRasterizer<PointDataGridT>::rasterizeUniformDensity(
1328 RasterMode mode, bool reduceMemory, float scale, const FilterT& filter)
1329{
1330 // no attribute to rasterize, so just provide an empty string and default to float type
1331 auto density = rasterizeAttribute<FloatGrid, float>("", mode, reduceMemory, scale, filter);
1332 // hard-code grid name to density
1333 density->setName("density");
1334 return density;
1335}
1336
1337template <typename PointDataGridT>
1338template <typename FilterT>
1339 FloatGrid::Ptr
1340FrustumRasterizer<PointDataGridT>::rasterizeDensity(
1341 const openvdb::Name& attribute, RasterMode mode, bool reduceMemory, float scale, const FilterT& filter)
1342{
1343 auto density = rasterizeAttribute<FloatGrid, float>(attribute, mode, reduceMemory, scale, filter);
1344 // hard-code grid name to density
1345 density->setName("density");
1346 return density;
1347}
1348
1349template <typename PointDataGridT>
1350template <typename FilterT>
1351 GridBase::Ptr
1352FrustumRasterizer<PointDataGridT>::rasterizeAttribute(
1353 const Name& attribute, RasterMode mode, bool reduceMemory, float scale, const FilterT& filter)
1354{
1355 // retrieve the source type of the attribute
1356
1357 Name sourceType;
1358 Index stride(0);
1359 for (const auto& points : mPointGrids) {
1360 auto leaf = points.tree().cbeginLeaf();
1361 const auto& descriptor = leaf->attributeSet().descriptor();
1362 const size_t targetIndex = descriptor.find(attribute);
1363 // ignore grids which don't have the attribute
1364 if (targetIndex == points::AttributeSet::INVALID_POS) continue;
1365 const auto* attributeArray = leaf->attributeSet().getConst(attribute);
1366 if (!attributeArray) continue;
1367 stride = attributeArray->stride();
1368 sourceType = descriptor.valueType(targetIndex);
1369 if (!sourceType.empty()) break;
1370 }
1371
1372 // no valid point attributes for rasterization
1373 // TODO: add a warning / error in the case that there are non-zero grids
1374 if (sourceType.empty()) return {};
1375
1376 if (stride == 1 && sourceType == typeNameAsString<float>()) {
1377 using GridT = typename PointDataGridT::template ValueConverter<float>::Type;
1378 return rasterizeAttribute<GridT, float>(attribute, mode, reduceMemory, scale, filter);
1379// this define is for lowering compilation time when debugging by instantiating only the float
1380// code path (default is to instantiate all code paths)
1381#ifndef ONLY_RASTER_FLOAT
1382 } else if ( sourceType == typeNameAsString<Vec3f>() ||
1383 (stride == 3 && sourceType == typeNameAsString<float>())) {
1384 using GridT = typename PointDataGridT::template ValueConverter<Vec3f>::Type;
1385 return rasterizeAttribute<GridT, Vec3f>(attribute, mode, reduceMemory, scale, filter);
1386 } else if ( sourceType == typeNameAsString<Vec3d>() ||
1387 (stride == 3 && sourceType == typeNameAsString<double>())) {
1388 using GridT = typename PointDataGridT::template ValueConverter<Vec3d>::Type;
1389 return rasterizeAttribute<GridT, Vec3d>(attribute, mode, reduceMemory, scale, filter);
1390 } else if ( sourceType == typeNameAsString<Vec3i>() ||
1391 (stride == 3 && sourceType == typeNameAsString<int32_t>())) {
1392 using GridT = typename PointDataGridT::template ValueConverter<Vec3i>::Type;
1393 return rasterizeAttribute<GridT, Vec3i>(attribute, mode, reduceMemory, scale, filter);
1394 } else if (stride == 1 && sourceType == typeNameAsString<int16_t>()) {
1395 using GridT = typename PointDataGridT::template ValueConverter<Int32>::Type;
1396 return rasterizeAttribute<GridT, int16_t>(attribute, mode, reduceMemory, scale, filter);
1397 } else if (stride == 1 && sourceType == typeNameAsString<int32_t>()) {
1398 using GridT = typename PointDataGridT::template ValueConverter<Int32>::Type;
1399 return rasterizeAttribute<GridT, int32_t>(attribute, mode, reduceMemory, scale, filter);
1400 } else if (stride == 1 && sourceType == typeNameAsString<int64_t>()) {
1401 using GridT = typename PointDataGridT::template ValueConverter<Int64>::Type;
1402 return rasterizeAttribute<GridT, int64_t>(attribute, mode, reduceMemory, scale, filter);
1403 } else if (stride == 1 && sourceType == typeNameAsString<double>()) {
1404 using GridT = typename PointDataGridT::template ValueConverter<double>::Type;
1405 return rasterizeAttribute<GridT, double>(attribute, mode, reduceMemory, scale, filter);
1406 } else if (stride == 1 && sourceType == typeNameAsString<bool>()) {
1407 using GridT = typename PointDataGridT::template ValueConverter<bool>::Type;
1408 return rasterizeAttribute<GridT, bool>(attribute, mode, reduceMemory, true, filter);
1409#endif
1410 } else {
1411 std::ostringstream ostr;
1412 ostr << "Cannot rasterize attribute of type - " << sourceType;
1413 if (stride > 1) ostr << " x " << stride;
1414 OPENVDB_THROW(TypeError, ostr.str());
1415 }
1416}
1417
1418template <typename PointDataGridT>
1419template <typename GridT, typename AttributeT, typename FilterT>
1420typename GridT::Ptr
1421 FrustumRasterizer<PointDataGridT>::rasterizeAttribute(const Name& attribute, RasterMode mode,
1422 bool reduceMemory, float scale, const FilterT& filter)
1423{
1424 if (attribute == "P") {
1425 OPENVDB_THROW(ValueError, "Cannot rasterize position attribute.")
1426 }
1427
1428 auto grid = GridT::create();
1429 grid->setName(attribute);
1430 grid->setTransform(mSettings.transform->copy());
1431
1432 this->performRasterization<AttributeT>(*grid, mode, attribute, reduceMemory, scale, filter);
1433
1434 return grid;
1435}
1436
1437template <typename PointDataGridT>
1438template <typename GridT, typename FilterT>
1439typename GridT::Ptr
1440FrustumRasterizer<PointDataGridT>::rasterizeMask(bool reduceMemory, const FilterT& filter)
1441{
1442 using ValueT = typename GridT::ValueType;
1443
1444 static_assert(point_rasterize_internal::BoolTraits<ValueT>::IsBool,
1445 "Value type of mask to be rasterized must be bool or ValueMask.");
1446
1447 auto grid = rasterizeAttribute<GridT, ValueT>("", RasterMode::ACCUMULATE, reduceMemory, true, filter);
1448 grid->setName("mask");
1449
1450 return grid;
1451}
1452
1453template <typename PointDataGridT>
1454template <typename AttributeT, typename GridT, typename FilterT>
1455void
1456 FrustumRasterizer<PointDataGridT>::performRasterization(
1457 GridT& grid, RasterMode mode, const openvdb::Name& attribute, bool reduceMemory,
1458 float scale, const FilterT& filter)
1459{
1460 using openvdb::points::point_mask_internal::GridCombinerOp;
1461 using point_rasterize_internal::computeWeightedValue;
1462
1463 using TreeT = typename GridT::TreeType;
1464 using LeafT = typename TreeT::LeafNodeType;
1465 using ValueT = typename TreeT::ValueType;
1466 using CombinerOpT = typename point_rasterize_internal::CombinableTraits<GridT>::OpT;
1467 using CombinableT = typename point_rasterize_internal::CombinableTraits<GridT>::T;
1468
1469 // start interrupter with a descriptive name
1470 if (mInterrupter) {
1471 std::stringstream ss;
1472 ss << "Rasterizing Points ";
1473 if (!mSettings.camera.isStatic() || mSettings.velocityMotionBlur) {
1474 ss << "with Motion Blur ";
1475 }
1476 if (mSettings.transform->isLinear()) {
1477 ss << "to Linear Volume";
1478 } else {
1479 ss << "to Frustum Volume";
1480 }
1481 mInterrupter->start(ss.str().c_str());
1482 }
1483
1484 const bool useMaximum = mode == RasterMode::MAXIMUM;
1485 const bool useWeight = mode == RasterMode::AVERAGE;
1486
1487 if (useMaximum && VecTraits<ValueT>::IsVec) {
1488 OPENVDB_THROW(ValueError,
1489 "Cannot use maximum mode when rasterizing vector attributes.");
1490 }
1491
1492 if ((useMaximum || useWeight) && point_rasterize_internal::BoolTraits<ValueT>::IsBool) {
1493 OPENVDB_THROW(ValueError,
1494 "Cannot use maximum or average modes when rasterizing bool attributes.");
1495 }
1496
1497 CombinableT combiner;
1498 CombinableT weightCombiner;
1499 CombinableT* weightCombinerPtr = useWeight ? &weightCombiner : nullptr;
1500
1501 // use leaf count as an approximate indicator for progress as it
1502 // doesn't even require loading the topology
1503
1504 if (mInterrupter) {
1505 if (mPointGrids.size() == 1) {
1506 mPointGrids[0].setLeafPercentage(100);
1507 }
1508 else {
1509 // compute cumulative leaf counts per grid
1510 Index64 leafCount(0);
1511 std::vector<Index64> leafCounts;
1512 leafCounts.reserve(mPointGrids.size());
1513 for (auto& points : mPointGrids) {
1514 leafCount += points.tree().leafCount();
1515 leafCounts.push_back(leafCount);
1516 }
1517
1518 // avoid dividing by zero
1519 if (leafCount == Index64(0)) leafCount++;
1520
1521 // compute grid percentages based on leaf count
1522 for (size_t i = 0; i < leafCounts.size(); i++) {
1523 int percentage = static_cast<int>(math::Round((static_cast<float>(leafCounts[i]))/
1524 static_cast<float>(leafCount)));
1525 mPointGrids[i].setLeafPercentage(percentage);
1526 }
1527 }
1528 }
1529
1530 // rasterize each point grid into each grid in turn
1531
1532 for (auto& points : mPointGrids) {
1533
1534 points.template rasterize<AttributeT, GridT>(
1535 attribute, combiner, weightCombinerPtr, scale, filter, mode == RasterMode::MAXIMUM, reduceMemory, mInterrupter);
1536
1537 // interrupt if requested and update the progress percentage
1538 // note that even when interrupting, the operation to combine the local grids
1539 // is completed so that the user receives a partially rasterized volume
1540
1541 if (mInterrupter &&
1542 mInterrupter->wasInterrupted(points.leafPercentage())) {
1543 break;
1544 }
1545 }
1546
1547 // combine the value grids into one
1548
1549 CombinerOpT combineOp(grid, mode != RasterMode::MAXIMUM);
1550 combiner.combine_each(combineOp);
1551
1552 if (useWeight) {
1553
1554 // combine the weight grids into one
1555
1556 auto weightGrid = GridT::create(ValueT(1));
1557 CombinerOpT weightCombineOp(*weightGrid, /*sum=*/true);
1558 weightCombiner.combine_each(weightCombineOp);
1559
1560 tree::LeafManager<TreeT> leafManager(grid.tree());
1561 leafManager.foreach(
1562 [&](LeafT& leaf, size_t /*idx*/) {
1563 auto weightAccessor = weightGrid->getConstAccessor();
1564 for (auto iter = leaf.beginValueOn(); iter; ++iter) {
1565 auto weight = weightAccessor.getValue(iter.getCoord());
1566 iter.setValue(computeWeightedValue(iter.getValue(), weight));
1567 }
1568 },
1569 mSettings.threaded);
1570 }
1571
1572 if (mInterrupter) mInterrupter->end();
1573}
1574
1575
1576} // namespace points
1577} // namespace OPENVDB_VERSION_NAME
1578} // namespace openvdb
1579
1580#endif // OPENVDB_POINTS_POINT_RASTERIZE_FRUSTUM_IMPL_HAS_BEEN_INCLUDED
openvdb::v11_0::GridBase::Ptr
SharedPtr< GridBase > Ptr
Definition Grid.h:80
openvdb::v11_0::Grid
Container class that associates a tree with a transform and metadata.
Definition Grid.h:571
openvdb::v11_0::Grid::Ptr
SharedPtr< Grid > Ptr
Definition Grid.h:573
openvdb::v11_0::Grid::create
static Ptr create()
Return a new grid with background value zero.
Definition Grid.h:1308
openvdb::v11_0::TypeError
Definition Exceptions.h:64
openvdb::v11_0::ValueError
Definition Exceptions.h:65
openvdb::v11_0::math::BBox< Vec3d >
openvdb::v11_0::math::BBox::empty
bool empty() const
Return true if this bounding box is empty, i.e., it has no (positive) volume.
Definition BBox.h:196
openvdb::v11_0::math::CoordBBox
Axis-aligned bounding box of signed integer coordinates.
Definition Coord.h:251
openvdb::v11_0::math::Coord
Signed (x, y, z) 32-bit integer coordinates.
Definition Coord.h:25
openvdb::v11_0::math::Coord::ceil
static Coord ceil(const Vec3< T > &xyz)
Return the largest integer coordinates that are not greater than xyz+1 (node centered conversion).
Definition Coord.h:63
openvdb::v11_0::math::Coord::floor
static Coord floor(const Vec3< T > &xyz)
Return the largest integer coordinates that are not greater than xyz (node centered conversion).
Definition Coord.h:56
openvdb::v11_0::math::Transform
Definition Transform.h:40
openvdb::v11_0::math::Transform::copy
Ptr copy() const
Definition Transform.h:50
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::length
T length() const
Length of the vector.
Definition Vec3.h:200
openvdb::v11_0::math::Vec3::dot
T dot(const Vec3< T > &v) const
Dot product.
Definition Vec3.h:191
openvdb::v11_0::points::AttributeSet::INVALID_POS
@ INVALID_POS
Definition AttributeSet.h:41
openvdb::v11_0::points::FrustumRasterizer
Efficient rasterization of one or more VDB Points grids into a linear or frustum volume with the opti...
Definition PointRasterizeFrustum.h:164
openvdb::v11_0::points::FrustumRasterizer::GridConstPtr
typename PointDataGridT::ConstPtr GridConstPtr
Definition PointRasterizeFrustum.h:167
openvdb::v11_0::points::FrustumRasterizer::memUsage
size_t memUsage() const
Return memory usage of the rasterizer.
Definition PointRasterizeFrustumImpl.h:1315
openvdb::v11_0::points::FrustumRasterizer::size
size_t size() const
Return number of PointDataGrids in the rasterizer.
Definition PointRasterizeFrustumImpl.h:1308
openvdb::v11_0::points::FrustumRasterizer::rasterizeDensity
FloatGrid::Ptr rasterizeDensity(const openvdb::Name &attribute, RasterMode mode=RasterMode::MAXIMUM, bool reduceMemory=false, float scale=1.0f, const FilterT &filter=FilterT())
Definition PointRasterizeFrustumImpl.h:1340
openvdb::v11_0::points::FrustumRasterizer::addPoints
void addPoints(GridConstPtr &points)
Append a PointDataGrid to the rasterizer (but don't rasterize yet).
Definition PointRasterizeFrustumImpl.h:1280
openvdb::v11_0::points::FrustumRasterizer::rasterizeMask
GridT::Ptr rasterizeMask(bool reduceMemory=false, const FilterT &filter=FilterT())
Definition PointRasterizeFrustumImpl.h:1440
openvdb::v11_0::points::FrustumRasterizer::GridPtr
typename PointDataGridT::Ptr GridPtr
Definition PointRasterizeFrustum.h:166
openvdb::v11_0::points::FrustumRasterizer::clear
void clear()
Clear all PointDataGrids in the rasterizer.
Definition PointRasterizeFrustumImpl.h:1301
openvdb::v11_0::points::FrustumRasterizer::rasterizeAttribute
GridBase::Ptr rasterizeAttribute(const Name &attribute, RasterMode mode=RasterMode::ACCUMULATE, bool reduceMemory=false, float scale=1.0f, const FilterT &filter=FilterT())
Definition PointRasterizeFrustumImpl.h:1352
openvdb::v11_0::points::FrustumRasterizer::rasterizeUniformDensity
FloatGrid::Ptr rasterizeUniformDensity(RasterMode mode=RasterMode::MAXIMUM, bool reduceMemory=false, float scale=1.0f, const FilterT &filter=FilterT())
Definition PointRasterizeFrustumImpl.h:1327
openvdb::v11_0::points::RasterCamera::weight
float weight(Index i) const
Definition PointRasterizeFrustumImpl.h:1126
openvdb::v11_0::points::RasterCamera::simplify
void simplify()
Definition PointRasterizeFrustumImpl.h:1089
openvdb::v11_0::points::RasterCamera::transform
const math::Transform & transform(Index i) const
Definition PointRasterizeFrustumImpl.h:1136
openvdb::v11_0::points::RasterCamera::size
size_t size() const
Definition PointRasterizeFrustumImpl.h:1084
openvdb::v11_0::points::RasterCamera::firstTransform
const math::Transform & firstTransform() const
Definition PointRasterizeFrustumImpl.h:1146
openvdb::v11_0::points::RasterCamera::isStatic
bool isStatic() const
Definition PointRasterizeFrustumImpl.h:1067
openvdb::v11_0::points::RasterCamera::setShutter
void setShutter(float start, float end)
Definition PointRasterizeFrustumImpl.h:1158
openvdb::v11_0::points::RasterCamera::appendTransform
void appendTransform(const math::Transform &, float weight=1.0f)
Definition PointRasterizeFrustumImpl.h:1078
openvdb::v11_0::points::RasterCamera::shutterEnd
float shutterEnd() const
Definition PointRasterizeFrustumImpl.h:1169
openvdb::v11_0::points::RasterCamera::hasWeight
bool hasWeight(Index i) const
Definition PointRasterizeFrustumImpl.h:1119
openvdb::v11_0::points::RasterCamera::clear
void clear()
Definition PointRasterizeFrustumImpl.h:1072
openvdb::v11_0::points::RasterCamera::lastTransform
const math::Transform & lastTransform() const
Definition PointRasterizeFrustumImpl.h:1152
openvdb::v11_0::points::RasterCamera::shutterStart
float shutterStart() const
Definition PointRasterizeFrustumImpl.h:1164
openvdb::v11_0::tree::Tree::ConstPtr
SharedPtr< const Tree > ConstPtr
Definition Tree.h:181
openvdb::v11_0::tree::ValueAccessorImpl
The Value Accessor Implementation and API methods. The majoirty of the API matches the API of a compa...
Definition ValueAccessor.h:367
openvdb::v11_0::tree::ValueAccessorImpl::isValueOn
bool isValueOn(const Coord &xyz) const
Return the active state of the voxel at the given coordinates.
Definition ValueAccessor.h:480
nanovdb::CoordBBox
BBox< Coord > CoordBBox
Definition NanoVDB.h:2535
openvdb::v11_0::math::Vec2s
Vec2< float > Vec2s
Definition Vec2.h:532
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::Round
float Round(float x)
Return x rounded to the nearest integer.
Definition Math.h:819
openvdb::v11_0::math::Vec3i
Vec3< int32_t > Vec3i
Definition Vec3.h:661
openvdb::v11_0::points::rasterize
void rasterize(const PointDataTreeOrGridT &points, TransferT &transfer, const FilterT &filter=NullFilter(), InterrupterT *interrupter=nullptr)
Perform potentially complex rasterization from a user defined transfer scheme.
Definition PointTransfer.h:556
openvdb::v11_0::points::RasterMode
RasterMode
How to composite points into a volume.
Definition PointRasterizeFrustum.h:30
openvdb::v11_0::points::RasterMode::MAXIMUM
@ MAXIMUM
openvdb::v11_0::points::RasterMode::AVERAGE
@ AVERAGE
openvdb::v11_0::points::RasterMode::ACCUMULATE
@ ACCUMULATE
openvdb::v11_0::tools::prune
void prune(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 nodes whose values are all the same...
Definition Prune.h:335
openvdb::v11_0::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::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::Name
std::string Name
Definition Name.h:19
openvdb::v11_0::typeNameAsString< int32_t >
const char * typeNameAsString< int32_t >()
Definition Types.h:526
openvdb::v11_0::typeNameAsString< Vec3d >
const char * typeNameAsString< Vec3d >()
Definition Types.h:536
openvdb::v11_0::Index
Index32 Index
Definition Types.h:54
openvdb::v11_0::typeNameAsString< bool >
const char * typeNameAsString< bool >()
Definition Types.h:517
openvdb::v11_0::typeNameAsString< float >
const char * typeNameAsString< float >()
Definition Types.h:520
openvdb::v11_0::typeNameAsString< Vec3f >
const char * typeNameAsString< Vec3f >()
Definition Types.h:535
openvdb::v11_0::typeNameAsString< double >
const char * typeNameAsString< double >()
Definition Types.h:521
openvdb::v11_0::ConstPtrCast
SharedPtr< T > ConstPtrCast(const SharedPtr< U > &ptr)
Return a new shared pointer that points to the same object as the given pointer but with possibly dif...
Definition Types.h:126
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::Index64
uint64_t Index64
Definition Types.h:53
openvdb::v11_0::typeNameAsString< Vec3i >
const char * typeNameAsString< Vec3i >()
Definition Types.h:534
openvdb::v11_0::typeNameAsString< int16_t >
const char * typeNameAsString< int16_t >()
Definition Types.h:524
openvdb::v11_0::typeNameAsString< int64_t >
const char * typeNameAsString< int64_t >()
Definition Types.h:528
openvdb_houdini::GridPtr
openvdb::GridBase::Ptr GridPtr
Definition Utils.h:35
openvdb
Definition Exceptions.h:13
OPENVDB_THROW
#define OPENVDB_THROW(exception, message)
Definition Exceptions.h:74
openvdb::v11_0::VecTraits::IsVec
static const bool IsVec
Definition Types.h:245
openvdb::v11_0::points::FrustumRasterizerMask
Definition PointRasterizeFrustum.h:112
openvdb::v11_0::points::FrustumRasterizerMask::FrustumRasterizerMask
FrustumRasterizerMask()=default
openvdb::v11_0::points::FrustumRasterizerSettings
A group of shared settings to be used in the Volume Rasterizer.
Definition PointRasterizeFrustum.h:87
openvdb::v11_0::points::FrustumRasterizerSettings::velocityAttribute
Name velocityAttribute
Definition PointRasterizeFrustum.h:105
openvdb::v11_0::points::FrustumRasterizerSettings::velocityMotionBlur
bool velocityMotionBlur
Definition PointRasterizeFrustum.h:100
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