GCC Code Coverage Report

Directory: ./
File: openvdb/openvdb/unittest/TestPointDataLeaf.cc
Date: 2022-07-25 17:40:05
Exec Total Coverage
Lines: 581 586 99.1%
Functions: 21 21 100.0%
Branches: 901 4088 22.0%
Line Branch Exec Source
1 // Copyright Contributors to the OpenVDB Project
2 // SPDX-License-Identifier: MPL-2.0
3
4 #include <openvdb/points/PointDataGrid.h>
5 #include <openvdb/openvdb.h>
6 #include <openvdb/io/io.h>
7
8 #include <gtest/gtest.h>
9
10 #include <cmath>
11 #include <ios>
12 #include <limits>
13 #include <memory>
14 #include <sstream>
15 #include <vector>
16
17 using namespace openvdb;
18 using namespace openvdb::points;
19
20
21 14 class TestPointDataLeaf: public ::testing::Test
22 {
23 public:
24 14 void SetUp() override { openvdb::initialize(); }
25 14 void TearDown() override { openvdb::uninitialize(); }
26 }; // class TestPointDataLeaf
27
28 using LeafType = PointDataTree::LeafNodeType;
29 using ValueType = LeafType::ValueType;
30 using BufferType = LeafType::Buffer;
31
32 namespace {
33
34 bool
35 16 matchingNamePairs(const openvdb::NamePair& lhs,
36 const openvdb::NamePair& rhs)
37 {
38
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 16 if (lhs.first != rhs.first) return false;
39
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 16 if (lhs.second != rhs.second) return false;
40
41 return true;
42 }
43
44 bool
45 4 zeroLeafValues(const LeafType* leafNode)
46 {
47
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 2051 for (openvdb::Index i = 0; i < LeafType::SIZE; i++) {
48
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 2048 if (leafNode->buffer().getValue(i) != LeafType::ValueType(0)) return false;
49 }
50
51 return true;
52 }
53
54 bool
55
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 2 noAttributeData(const LeafType* leafNode)
56 {
57 const AttributeSet& attributeSet = leafNode->attributeSet();
58
59
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 2 return attributeSet.size() == 0 && attributeSet.descriptor().size() == 0;
60 }
61
62 bool
63 2 monotonicOffsets(const LeafType& leafNode)
64 {
65 int previous = -1;
66
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 508 for (auto iter = leafNode.cbeginValueOn(); iter; ++iter) {
68
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 507 if (previous > int(*iter)) return false;
69 506 previous = int(*iter);
70 }
71
72 1 return true;
73 }
74
75 // (borrowed from PointIndexGrid unit test)
76
77 class PointList
78 {
79 public:
80 using PosType = openvdb::Vec3R;
81 using value_type = openvdb::Vec3R;
82
83 PointList(const std::vector<openvdb::Vec3R>& points)
84
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 1 : mPoints(&points)
85 {
86 }
87
88 size_t size() const {
89
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 8 return mPoints->size();
90 }
91
92 void getPos(size_t n, openvdb::Vec3R& xyz) const {
93
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 40000 xyz = (*mPoints)[n];
94 }
95
96 protected:
97 std::vector<openvdb::Vec3R> const * const mPoints;
98 }; // PointList
99
100 // Generate random points by uniformly distributing points
101 // on a unit-sphere.
102 // (borrowed from PointIndexGrid unit test)
103 1 std::vector<openvdb::Vec3R> genPoints(const int numPoints)
104 {
105 // init
106 openvdb::math::Random01 randNumber(0);
107 1 const int n = int(std::sqrt(double(numPoints)));
108 1 const double xScale = (2.0 * M_PI) / double(n);
109
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 1 const double yScale = M_PI / double(n);
110
111 double x, y, theta, phi;
112
113 std::vector<openvdb::Vec3R> points;
114
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 1 points.reserve(n*n);
115
116 // loop over a [0 to n) x [0 to n) grid.
117
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 201 for (int a = 0; a < n; ++a) {
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 40200 for (int b = 0; b < n; ++b) {
119
120 // jitter, move to random pos. inside the current cell
121 40000 x = double(a) + randNumber();
122 40000 y = double(b) + randNumber();
123
124 // remap to a lat/long map
125 40000 theta = y * yScale; // [0 to PI]
126 40000 phi = x * xScale; // [0 to 2PI]
127
128 // convert to cartesian coordinates on a unit sphere.
129 // spherical coordinate triplet (r=1, theta, phi)
130 80000 points.emplace_back( std::sin(theta)*std::cos(phi),
131 80000 std::sin(theta)*std::sin(phi),
132
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 40000 std::cos(theta) );
133 }
134 }
135
136 1 return points;
137 }
138
139 } // namespace
140
141
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 1 TEST_F(TestPointDataLeaf, testEmptyLeaf)
142 {
143 // empty leaf construction
144
145 {
146 1 LeafType* leafNode = new LeafType();
147
148
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 1 EXPECT_TRUE(leafNode);
149
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 1 EXPECT_TRUE(leafNode->isEmpty());
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 1 EXPECT_TRUE(!leafNode->buffer().empty());
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 1 EXPECT_TRUE(zeroLeafValues(leafNode));
152
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 1 EXPECT_TRUE(noAttributeData(leafNode));
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 1 EXPECT_TRUE(leafNode->origin() == openvdb::Coord(0, 0, 0));
154
155
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 2 delete leafNode;
156 }
157
158 // empty leaf with non-zero origin construction
159
160 {
161 openvdb::Coord coord(20, 30, 40);
162
163
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 1 LeafType* leafNode = new LeafType(coord);
164
165
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 1 EXPECT_TRUE(leafNode);
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 1 EXPECT_TRUE(leafNode->isEmpty());
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 1 EXPECT_TRUE(!leafNode->buffer().empty());
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 1 EXPECT_TRUE(zeroLeafValues(leafNode));
169
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 1 EXPECT_TRUE(noAttributeData(leafNode));
170
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 1 EXPECT_TRUE(leafNode->origin() == openvdb::Coord(16, 24, 40));
172
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 2 delete leafNode;
174 }
175 1 }
176
177
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 1 TEST_F(TestPointDataLeaf, testOffsets)
179 {
180 // offsets for one point per voxel (active = true)
181
182 {
183 1 LeafType* leafNode = new LeafType();
184
185
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 513 for (openvdb::Index i = 0; i < LeafType::SIZE; i++) {
186 512 leafNode->setOffsetOn(i, i);
187 }
188
189
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 1 EXPECT_TRUE(leafNode->getValue(10) == 10);
190
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 1 EXPECT_TRUE(leafNode->isDense());
191
192
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 2 delete leafNode;
193 }
194
195 // offsets for one point per voxel (active = false)
196
197 {
198 1 LeafType* leafNode = new LeafType();
199
200
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 513 for (openvdb::Index i = 0; i < LeafType::SIZE; i++) {
201 512 leafNode->setOffsetOnly(i, i);
202 }
203
204
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 1 EXPECT_TRUE(leafNode->getValue(10) == 10);
205
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 1 EXPECT_TRUE(leafNode->isEmpty());
206
207
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 2 delete leafNode;
208 }
209
210 // test bulk offset replacement without activity mask update
211
212 {
213 1 LeafType* leafNode = new LeafType();
214
215
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 513 for (openvdb::Index i = 0; i < LeafType::SIZE; ++i) {
216 512 leafNode->setOffsetOn(i, 10);
217 }
218
219 1 std::vector<LeafType::ValueType> newOffsets(LeafType::SIZE);
220
221
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 1 leafNode->setOffsets(newOffsets, /*updateValueMask*/false);
222
223 const LeafType::NodeMaskType& valueMask = leafNode->getValueMask();
224
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 513 for (openvdb::Index i = 0; i < LeafType::SIZE; ++i ) {
225
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 512 EXPECT_TRUE(valueMask.isOn(i));
226 }
227
228
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 2 delete leafNode;
229 }
230
231 // test bulk offset replacement with activity mask update
232
233 {
234 1 LeafType* leafNode = new LeafType();
235
236
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 513 for (openvdb::Index i = 0; i < LeafType::SIZE; ++i) {
237 512 leafNode->setOffsetOn(i, 10);
238 }
239
240 1 std::vector<LeafType::ValueType> newOffsets(LeafType::SIZE);
241
242
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 1 leafNode->setOffsets(newOffsets, /*updateValueMask*/true);
243
244 const LeafType::NodeMaskType& valueMask = leafNode->getValueMask();
245
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 513 for (openvdb::Index i = 0; i < LeafType::SIZE; ++i ) {
246
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 512 EXPECT_TRUE(valueMask.isOff(i));
247 }
248
249
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 2 delete leafNode;
250 }
251
252 // ensure bulk offset replacement fails when vector size doesn't equal number of voxels
253
254 {
255 1 LeafType* leafNode = new LeafType();
256
257 std::vector<LeafType::ValueType> newOffsets;
258
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 2 EXPECT_THROW(leafNode->setOffsets(newOffsets), openvdb::ValueError);
259
260
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 2 delete leafNode;
261 }
262
263 // test offset validation
264
265 {
266 using AttributeVec3s = TypedAttributeArray<Vec3s>;
267 using AttributeS = TypedAttributeArray<float>;
268 using Descriptor = AttributeSet::Descriptor;
269
270 // empty Descriptor should throw on leaf node initialize
271 1 auto emptyDescriptor = std::make_shared<Descriptor>();
272
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 1 LeafType emptyLeafNode;
273
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 2 EXPECT_THROW(emptyLeafNode.initializeAttributes(emptyDescriptor, 5),
274 openvdb::IndexError);
275
276 // create a non-empty Descriptor
277
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 1 Descriptor::Ptr descriptor = Descriptor::create(AttributeVec3s::attributeType());
278
279 // ensure validateOffsets succeeds for monotonically increasing offsets that fully
280 // utilise the underlying attribute arrays
281
282 {
283 const size_t numAttributes = 1;
284
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 1 LeafType* leafNode = new LeafType();
285
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 1 leafNode->initializeAttributes(descriptor, numAttributes);
286
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 2 descriptor = descriptor->duplicateAppend("density", AttributeS::attributeType());
288
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 2 leafNode->appendAttribute(leafNode->attributeSet().descriptor(),
289 descriptor, descriptor->find("density"));
290
291
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 1 std::vector<LeafType::ValueType> offsets(LeafType::SIZE);
292 1 offsets.back() = numAttributes;
293
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 1 leafNode->setOffsets(offsets);
294
295
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 1 EXPECT_NO_THROW(leafNode->validateOffsets());
296
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 2 delete leafNode;
297 }
298
299 // ensure validateOffsets detects non-monotonic offset values
300
301 {
302
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 1 LeafType* leafNode = new LeafType();
303
304
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 1 std::vector<LeafType::ValueType> offsets(LeafType::SIZE);
305 1 *offsets.begin() = 1;
306
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 1 leafNode->setOffsets(offsets);
307
308
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 2 EXPECT_THROW(leafNode->validateOffsets(), openvdb::ValueError);
309
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 2 delete leafNode;
310 }
311
312 // ensure validateOffsets detects inconsistent attribute array sizes
313
314 {
315
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 1 descriptor = Descriptor::create(AttributeVec3s::attributeType());
316
317 const size_t numAttributes = 1;
318
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319
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320
321
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 2 descriptor = descriptor->duplicateAppend("density", AttributeS::attributeType());
322
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 2 leafNode->appendAttribute(leafNode->attributeSet().descriptor(),
323 descriptor, descriptor->find("density"));
324
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 1 AttributeSet* newSet = new AttributeSet(leafNode->attributeSet(), numAttributes);
326
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 3 newSet->replace("density", AttributeS::create(numAttributes+1));
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 1 leafNode->replaceAttributeSet(newSet);
328
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 1 std::vector<LeafType::ValueType> offsets(LeafType::SIZE);
330 1 offsets.back() = numAttributes;
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332
333
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 2 EXPECT_THROW(leafNode->validateOffsets(), openvdb::ValueError);
334
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 2 delete leafNode;
335 }
336
337 // ensure validateOffsets detects unused attributes (e.g. final voxel offset not
338 // equal to size of attribute arrays)
339
340 {
341
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342
343 const size_t numAttributes = 1;
344
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345
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346
347
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 2 descriptor = descriptor->duplicateAppend("density", AttributeS::attributeType());
348
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 2 leafNode->appendAttribute(leafNode->attributeSet().descriptor(),
349 descriptor, descriptor->find("density"));
350
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 1 std::vector<LeafType::ValueType> offsets(LeafType::SIZE);
352 1 offsets.back() = numAttributes - 1;
353
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354
355
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356
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 2 delete leafNode;
357 }
358
359 // ensure validateOffsets detects out-of-bounds offset values
360
361 {
362
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363
364 const size_t numAttributes = 1;
365
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366
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367
368
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 2 descriptor = descriptor->duplicateAppend("density", AttributeS::attributeType());
369
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 2 leafNode->appendAttribute(leafNode->attributeSet().descriptor(),
370 descriptor, descriptor->find("density"));
371
372
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 1 std::vector<LeafType::ValueType> offsets(LeafType::SIZE);
373 1 offsets.back() = numAttributes + 1;
374
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 1 leafNode->setOffsets(offsets);
375
376
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 2 EXPECT_THROW(leafNode->validateOffsets(), openvdb::ValueError);
377
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 2 delete leafNode;
378 }
379 }
380 1 }
381
382
383
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 1 TEST_F(TestPointDataLeaf, testSetValue)
384 {
385 // the following tests are not run when in debug mode due to assertions firing
386 #ifdef NDEBUG
387 LeafType leaf(openvdb::Coord(0, 0, 0));
388
389 openvdb::Coord xyz(0, 0, 0);
390 openvdb::Index index(LeafType::coordToOffset(xyz));
391
392 // ensure all non-modifiable operations are no-ops
393
394 leaf.setValueOnly(xyz, 10);
395 leaf.setValueOnly(index, 10);
396 leaf.setValueOff(xyz, 10);
397 leaf.setValueOff(index, 10);
398 leaf.setValueOn(xyz, 10);
399 leaf.setValueOn(index, 10);
400
401 struct Local { static inline void op(unsigned int& n) { n = 10; } };
402
403 leaf.modifyValue(xyz, Local::op);
404 leaf.modifyValue(index, Local::op);
405 leaf.modifyValueAndActiveState(xyz, Local::op);
406
407 EXPECT_EQ(0, int(leaf.getValue(xyz)));
408 #endif
409 1 }
410
411
412
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 2 TEST_F(TestPointDataLeaf, testMonotonicity)
413 {
414 1 LeafType leaf(openvdb::Coord(0, 0, 0));
415
416 // assign aggregate values and activate all non-even coordinate sums
417
418 unsigned sum = 0;
419
420
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 9 for (unsigned int i = 0; i < LeafType::DIM; i++) {
421
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 72 for (unsigned int j = 0; j < LeafType::DIM; j++) {
422
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 576 for (unsigned int k = 0; k < LeafType::DIM; k++) {
423
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 512 if (((i + j + k) % 2) == 0) continue;
424
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 512 leaf.setOffsetOn(LeafType::coordToOffset(openvdb::Coord(i, j, k)), sum++);
426 }
427 }
428 }
429
430
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 1 EXPECT_TRUE(monotonicOffsets(leaf));
431
432 // manually change a value and ensure offsets become non-monotonic
433
434 ✗ leaf.setOffsetOn(500, 4);
435
436
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 1 EXPECT_TRUE(!monotonicOffsets(leaf));
437 1 }
438
439
440
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 2 TEST_F(TestPointDataLeaf, testAttributes)
441 {
442 using AttributeVec3s = TypedAttributeArray<Vec3s>;
443 using AttributeI = TypedAttributeArray<int32_t>;
444
445 // create a descriptor
446
447 using Descriptor = AttributeSet::Descriptor;
448
449 1 Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType());
450
451 // create a leaf and initialize attributes using this descriptor
452
453
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 1 LeafType leaf(openvdb::Coord(0, 0, 0));
454
455
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 1 EXPECT_EQ(leaf.attributeSet().size(), size_t(0));
456
457
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 1 leaf.initializeAttributes(descrA, /*arrayLength=*/100);
458
459 TypedMetadata<int> defaultValue(7);
460 Metadata& baseDefaultValue = defaultValue;
461
462
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 2 descrA = descrA->duplicateAppend("id", AttributeI::attributeType());
463
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 2 leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("id"),
464 Index(1), true, &baseDefaultValue);
465
466 // note that the default value has not been added to the replacement descriptor,
467 // however the default value of the attribute is as expected
468
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 1 EXPECT_EQ(0,
469 leaf.attributeSet().descriptor().getDefaultValue<int>("id"));
470
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 1 EXPECT_EQ(7,
471 AttributeI::cast(*leaf.attributeSet().getConst("id")).get(0));
472
473
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 1 EXPECT_EQ(leaf.attributeSet().size(), size_t(2));
474
475 {
476
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 1 const AttributeArray* array = leaf.attributeSet().get(/*pos=*/0);
477
478
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 1 EXPECT_EQ(array->size(), Index(100));
479 }
480
481 // manually set a voxel
482
483 1 leaf.setOffsetOn(LeafType::SIZE - 1, 10);
484
485
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 1 EXPECT_TRUE(!zeroLeafValues(&leaf));
486
487 // neither dense nor empty
488
489
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 1 EXPECT_TRUE(!leaf.isDense());
490
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 1 EXPECT_TRUE(!leaf.isEmpty());
491
492 // clear the attributes and check voxel values are zero but value mask is not touched
493
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 1 leaf.clearAttributes(/*updateValueMask=*/ false);
495
496
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 1 EXPECT_TRUE(!leaf.isDense());
497
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 1 EXPECT_TRUE(!leaf.isEmpty());
498
499
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 1 EXPECT_EQ(leaf.attributeSet().size(), size_t(2));
500
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 1 EXPECT_TRUE(zeroLeafValues(&leaf));
501
502 // call clearAttributes again, updating the value mask and check it is now inactive
503
504
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505
506
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 1 EXPECT_TRUE(leaf.isEmpty());
507
508 // ensure arrays are uniform
509
510
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 1 const AttributeArray* array0 = leaf.attributeSet().get(/*pos=*/0);
511
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 1 const AttributeArray* array1 = leaf.attributeSet().get(/*pos=*/1);
512
513
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 1 EXPECT_EQ(array0->size(), Index(1));
514
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 1 EXPECT_EQ(array1->size(), Index(1));
515
516 // test leaf returns expected result for hasAttribute()
517
518
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519
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 2 EXPECT_TRUE(leaf.hasAttribute("P"));
520
521
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 1 EXPECT_TRUE(leaf.hasAttribute(/*pos*/1));
522
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 2 EXPECT_TRUE(leaf.hasAttribute("id"));
523
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 1 EXPECT_TRUE(!leaf.hasAttribute(/*pos*/2));
525
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 2 EXPECT_TRUE(!leaf.hasAttribute("test"));
526
527 // test underlying attributeArray can be accessed by name and index,
528 // and that their types are as expected.
529
530 const LeafType* constLeaf = &leaf;
531
532
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 1 EXPECT_TRUE(matchingNamePairs(leaf.attributeArray(/*pos*/0).type(),
533 AttributeVec3s::attributeType()));
534
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 1 EXPECT_TRUE(matchingNamePairs(leaf.attributeArray("P").type(),
535 AttributeVec3s::attributeType()));
536
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 1 EXPECT_TRUE(matchingNamePairs(leaf.attributeArray(/*pos*/1).type(),
537 AttributeI::attributeType()));
538
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 1 EXPECT_TRUE(matchingNamePairs(leaf.attributeArray("id").type(),
539 AttributeI::attributeType()));
540
541
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 1 EXPECT_TRUE(matchingNamePairs(constLeaf->attributeArray(/*pos*/0).type(),
542 AttributeVec3s::attributeType()));
543
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 1 EXPECT_TRUE(matchingNamePairs(constLeaf->attributeArray("P").type(),
544 AttributeVec3s::attributeType()));
545
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546 AttributeI::attributeType()));
547
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 1 EXPECT_TRUE(matchingNamePairs(constLeaf->attributeArray("id").type(),
548 AttributeI::attributeType()));
549
550 // check invalid pos or name throws
551
552
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553
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 3 EXPECT_THROW(leaf.attributeArray("not_there"), openvdb::LookupError);
554
555
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 2 EXPECT_THROW(constLeaf->attributeArray(/*pos=*/3), openvdb::LookupError);
556
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 3 EXPECT_THROW(constLeaf->attributeArray("not_there"), openvdb::LookupError);
557
558 // test leaf can be successfully cast to TypedAttributeArray and check types
559
560
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561 AttributeVec3s::attributeType()));
562
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563 AttributeVec3s::attributeType()));
564
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565 AttributeI::attributeType()));
566
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 1 EXPECT_TRUE(matchingNamePairs(leaf.attributeArray("id").type(),
567 AttributeI::attributeType()));
568
569
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570 AttributeVec3s::attributeType()));
571
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572 AttributeVec3s::attributeType()));
573
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574 AttributeI::attributeType()));
575
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 1 EXPECT_TRUE(matchingNamePairs(constLeaf->attributeArray("id").type(),
576 AttributeI::attributeType()));
577
578 // check invalid pos or name throws
579
580
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581
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 3 EXPECT_THROW(leaf.attributeArray("test"), openvdb::LookupError);
582
583
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584
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 3 EXPECT_THROW(constLeaf->attributeArray("test"), openvdb::LookupError);
585
586 // check memory usage = attribute set + base leaf
587
588 // leaf.initializeAttributes(descrA, /*arrayLength=*/100);
589
590 const LeafType::BaseLeaf& baseLeaf = static_cast<LeafType::BaseLeaf&>(leaf);
591
592
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593
594
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595 1 }
596
597
598
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 2 TEST_F(TestPointDataLeaf, testSteal)
599 {
600 using AttributeVec3s = TypedAttributeArray<Vec3s>;
601 using Descriptor = AttributeSet::Descriptor;
602
603 // create a descriptor
604
605 1 Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType());
606
607 // create a leaf and initialize attributes using this descriptor
608
609
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 1 LeafType leaf(openvdb::Coord(0, 0, 0));
610
611
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612
613
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 1 leaf.initializeAttributes(descrA, /*arrayLength=*/100);
614
615
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 1 EXPECT_EQ(leaf.attributeSet().size(), size_t(1));
616
617 // steal the attribute set
618
619 1 AttributeSet::UniquePtr attributeSet = leaf.stealAttributeSet();
620
621
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 1 EXPECT_TRUE(attributeSet);
622
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 1 EXPECT_EQ(attributeSet->size(), size_t(1));
623
624 // ensure a new attribute set has been inserted in it's place
625
626
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 1 EXPECT_EQ(leaf.attributeSet().size(), size_t(0));
627 1 }
628
629
630
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 1 TEST_F(TestPointDataLeaf, testTopologyCopy)
631 {
632 // test topology copy from a float Leaf
633
634 {
635 using FloatLeaf = openvdb::FloatTree::LeafNodeType;
636
637 // create a float leaf and activate some values
638
639 1 FloatLeaf floatLeaf(openvdb::Coord(0, 0, 0));
640
641 floatLeaf.setValueOn(1);
642 floatLeaf.setValueOn(4);
643 floatLeaf.setValueOn(7);
644 floatLeaf.setValueOn(8);
645
646
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 1 EXPECT_EQ(floatLeaf.onVoxelCount(), Index64(4));
647
648 // validate construction of a PointDataLeaf using a TopologyCopy
649
650
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 1 LeafType leaf(floatLeaf, 0, openvdb::TopologyCopy());
651
652
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 1 EXPECT_EQ(leaf.onVoxelCount(), Index64(4));
653
654
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 1 LeafType leaf2(openvdb::Coord(8, 8, 8));
655
656 leaf2.setValueOn(1);
657 leaf2.setValueOn(4);
658 leaf2.setValueOn(7);
659
660
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 1 EXPECT_TRUE(!leaf.hasSameTopology(&leaf2));
661
662 leaf2.setValueOn(8);
663
664
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 1 EXPECT_TRUE(leaf.hasSameTopology(&leaf2));
665
666 // validate construction of a PointDataLeaf using an Off-On TopologyCopy
667
668
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 1 LeafType leaf3(floatLeaf, 1, 2, openvdb::TopologyCopy());
669
670
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 1 EXPECT_EQ(leaf3.onVoxelCount(), Index64(4));
671 }
672
673 // test topology copy from a PointIndexLeaf
674
675 {
676 // generate points
677 // (borrowed from PointIndexGrid unit test)
678
679 const float voxelSize = 0.01f;
680 const openvdb::math::Transform::Ptr transform =
681 1 openvdb::math::Transform::createLinearTransform(voxelSize);
682
683
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 1 std::vector<openvdb::Vec3R> points = genPoints(40000);
684
685 PointList pointList(points);
686
687 // construct point index grid
688
689 using PointIndexGrid = openvdb::tools::PointIndexGrid;
690
691 PointIndexGrid::Ptr pointGridPtr =
692
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 1 openvdb::tools::createPointIndexGrid<PointIndexGrid>(pointList, *transform);
693
694 auto iter = pointGridPtr->tree().cbeginLeaf();
695
696
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 1 EXPECT_TRUE(iter);
697
698 // check that the active voxel counts match for all leaves
699
700
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 2701 for ( ; iter; ++iter) {
701
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 2700 LeafType leaf(*iter);
702
703
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 2700 EXPECT_EQ(iter->onVoxelCount(), leaf.onVoxelCount());
704 }
705 }
706 1 }
707
708
709
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 2 TEST_F(TestPointDataLeaf, testEquivalence)
710 {
711 using AttributeVec3s = TypedAttributeArray<openvdb::Vec3s>;
712 using AttributeF = TypedAttributeArray<float>;
713 using AttributeI = TypedAttributeArray<int32_t>;
714
715 // create a descriptor
716
717 using Descriptor = AttributeSet::Descriptor;
718
719 1 Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType());
720
721 // create a leaf and initialize attributes using this descriptor
722
723
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 1 LeafType leaf(openvdb::Coord(0, 0, 0));
724
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 1 leaf.initializeAttributes(descrA, /*arrayLength=*/100);
725
726
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 2 descrA = descrA->duplicateAppend("density", AttributeF::attributeType());
727
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 2 leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("density"));
728
729
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 2 descrA = descrA->duplicateAppend("id", AttributeI::attributeType());
730
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 2 leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("id"));
731
732 // manually activate some voxels
733
734 leaf.setValueOn(1);
735 leaf.setValueOn(4);
736 leaf.setValueOn(7);
737
738 // manually change some values in the density array
739
740 TypedAttributeArray<float>& attr =
741
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 1 TypedAttributeArray<float>::cast(leaf.attributeArray("density"));
742
743
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 1 attr.set(0, 5.0f);
744
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 1 attr.set(50, 2.0f);
745
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 1 attr.set(51, 8.1f);
746
747 // check deep copy construction (topology and attributes)
748
749 {
750
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 1 LeafType leaf2(leaf);
751
752
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 1 EXPECT_EQ(leaf.onVoxelCount(), leaf2.onVoxelCount());
753
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 1 EXPECT_TRUE(leaf.hasSameTopology(&leaf2));
754
755
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 1 EXPECT_EQ(leaf.attributeSet().size(), leaf2.attributeSet().size());
756
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 1 EXPECT_EQ(leaf.attributeSet().get(0)->size(),
757 leaf2.attributeSet().get(0)->size());
758 }
759
760 // check equivalence
761
762 {
763
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 1 LeafType leaf2(leaf);
764
765
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 1 EXPECT_TRUE(leaf == leaf2);
766
767
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 1 leaf2.setOrigin(openvdb::Coord(0, 8, 0));
768
769
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 1 EXPECT_TRUE(leaf != leaf2);
770 }
771
772 {
773
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 1 LeafType leaf2(leaf);
774
775
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 1 EXPECT_TRUE(leaf == leaf2);
776
777 leaf2.setValueOn(10);
778
779
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 1 EXPECT_TRUE(leaf != leaf2);
780 }
781 1 }
782
783
784
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 2 TEST_F(TestPointDataLeaf, testIterators)
785 {
786 using AttributeVec3s = TypedAttributeArray<openvdb::Vec3s>;
787 using AttributeF = TypedAttributeArray<float>;
788
789 // create a descriptor
790
791 using Descriptor = AttributeSet::Descriptor;
792
793 1 Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType());
794
795 // create a leaf and initialize attributes using this descriptor
796
797 const size_t size = LeafType::NUM_VOXELS;
798
799
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 1 LeafType leaf(openvdb::Coord(0, 0, 0));
800
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 1 leaf.initializeAttributes(descrA, /*arrayLength=*/size/2);
801
802
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 2 descrA = descrA->duplicateAppend("density", AttributeF::attributeType());
803
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 2 leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("density"));
804
805 { // uniform monotonic offsets, only even active
806 int offset = 0;
807
808
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 513 for (Index i = 0; i < size; i++)
809 {
810
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 512 if ((i % 2) == 0) {
811
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 512 leaf.setOffsetOn(i, ++offset);
812 }
813 else {
814
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 512 leaf.setOffsetOnly(i, ++offset);
815 leaf.setValueOff(i);
816 }
817 }
818 }
819
820 { // test index on
821
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 1 LeafType::IndexOnIter iterOn(leaf.beginIndexOn());
822
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 1 EXPECT_EQ(iterCount(iterOn), Index64(size/2));
823
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 513 for (int i = 0; iterOn; ++iterOn, i += 2) {
824
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 256 EXPECT_EQ(*iterOn, Index32(i));
825 }
826 }
827
828 { // test index off
829
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 1 LeafType::IndexOffIter iterOff(leaf.beginIndexOff());
830
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 1 EXPECT_EQ(iterCount(iterOff), Index64(size/2));
831
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 513 for (int i = 1; iterOff; ++iterOff, i += 2) {
832
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 256 EXPECT_EQ(*iterOff, Index32(i));
833 }
834 }
835
836 { // test index all
837 LeafType::IndexAllIter iterAll(leaf.beginIndexAll());
838
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 1 EXPECT_EQ(iterCount(iterAll), Index64(size));
839
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 1025 for (int i = 0; iterAll; ++iterAll, ++i) {
840
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 512 EXPECT_EQ(*iterAll, Index32(i));
841 }
842 }
843
844 1 }
845
846
847
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 2 TEST_F(TestPointDataLeaf, testReadWriteCompression)
848 {
849 using namespace openvdb;
850
851 util::NodeMask<3> valueMask;
852 util::NodeMask<3> childMask;
853
854 1 io::StreamMetadata::Ptr nullMetadata;
855
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 1 io::StreamMetadata::Ptr streamMetadata(new io::StreamMetadata);
856
857 { // simple read/write test
858
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 2 std::stringstream ss;
859
860 Index count = 8*8*8;
861
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 513 std::unique_ptr<PointDataIndex32[]> srcBuf(new PointDataIndex32[count]);
862
863
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 513 for (Index i = 0; i < count; i++) srcBuf[i] = i;
864
865 {
866
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 1 io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false);
867
868
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 513 std::unique_ptr<PointDataIndex32[]> destBuf(new PointDataIndex32[count]);
869
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 1 io::readCompressedValues(ss, destBuf.get(), count, valueMask, false);
871
872
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 513 for (Index i = 0; i < count; i++) {
873
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 512 EXPECT_EQ(srcBuf.get()[i], destBuf.get()[i]);
874 }
875 }
876
877 const char* charBuffer = reinterpret_cast<const char*>(srcBuf.get());
878 size_t referenceBytes =
879
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 1 compression::bloscCompressedSize(charBuffer, count*sizeof(PointDataIndex32));
880
881 {
882
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 1 ss.str("");
883
884
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 1 io::setStreamMetadataPtr(ss, streamMetadata);
885
886
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 1 io::writeCompressedValuesSize(ss, srcBuf.get(), count);
887
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 1 io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false);
888 1 int magic = 1924674;
889
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 1 ss.write(reinterpret_cast<const char*>(&magic), sizeof(int));
890
891
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 513 std::unique_ptr<PointDataIndex32[]> destBuf(new PointDataIndex32[count]);
892
893 uint16_t size;
894
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 1 ss.read(reinterpret_cast<char*>(&size), sizeof(uint16_t));
895
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 1 if (size == std::numeric_limits<uint16_t>::max()) size = 0;
896
897
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 1 EXPECT_EQ(size_t(size), referenceBytes);
898
899
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 1 io::readCompressedValues(ss, destBuf.get(), count, valueMask, false);
900
901 int magic2;
902
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 1 ss.read(reinterpret_cast<char*>(&magic2), sizeof(int));
903
904
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 1 EXPECT_EQ(magic, magic2);
905
906
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 513 for (Index i = 0; i < count; i++) {
907
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 512 EXPECT_EQ(srcBuf.get()[i], destBuf.get()[i]);
908 }
909
910
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 1 io::setStreamMetadataPtr(ss, nullMetadata);
911 }
912
913 { // repeat but using nullptr for destination to force seek behaviour
914
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 1 ss.str("");
915
916
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 1 io::setStreamMetadataPtr(ss, streamMetadata);
917
918
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 1 io::writeCompressedValuesSize(ss, srcBuf.get(), count);
919
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 1 io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false);
920 1 int magic = 3829250;
921
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 1 ss.write(reinterpret_cast<const char*>(&magic), sizeof(int));
922
923 uint16_t size;
924
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 1 ss.read(reinterpret_cast<char*>(&size), sizeof(uint16_t));
925 1 uint16_t actualSize(size);
926
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 1 if (size == std::numeric_limits<uint16_t>::max()) actualSize = 0;
927
928
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 1 EXPECT_EQ(size_t(actualSize), referenceBytes);
929
930
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 1 streamMetadata->setPass(size);
931
932 PointDataIndex32* forceSeek = nullptr;
933
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 1 io::readCompressedValues(ss, forceSeek, count, valueMask, false);
934
935 int magic2;
936
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 1 ss.read(reinterpret_cast<char*>(&magic2), sizeof(int));
937
938
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 1 EXPECT_EQ(magic, magic2);
939
940
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 1 io::setStreamMetadataPtr(ss, nullMetadata);
941 }
942
943 #ifndef OPENVDB_USE_BLOSC
944 { // write to indicate Blosc compression
945 std::stringstream ssInvalid;
946
947 uint16_t bytes16(100); // clamp to 16-bit unsigned integer
948 ssInvalid.write(reinterpret_cast<const char*>(&bytes16), sizeof(uint16_t));
949
950 std::unique_ptr<PointDataIndex32[]> destBuf(new PointDataIndex32[count]);
951 EXPECT_THROW(io::readCompressedValues(ssInvalid, destBuf.get(),
952 count, valueMask, false), RuntimeError);
953 }
954 #endif
955
956 #ifdef OPENVDB_USE_BLOSC
957 { // mis-matching destination bytes cause decompression failures
958
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 513 std::unique_ptr<PointDataIndex32[]> destBuf(new PointDataIndex32[count]);
959
960
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 1 ss.str("");
961
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 1 io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false);
962
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 2 EXPECT_THROW(io::readCompressedValues(ss, destBuf.get(),
963 count+1, valueMask, false), RuntimeError);
964
965
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 1 ss.str("");
966
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 1 io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false);
967
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 2 EXPECT_THROW(io::readCompressedValues(ss, destBuf.get(),
968 1, valueMask, false), RuntimeError);
969 }
970 #endif
971
972 { // seek
973
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 1 ss.str("");
974
975
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 1 io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false);
976
977 1 int test(10772832);
978
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 1 ss.write(reinterpret_cast<const char*>(&test), sizeof(int));
979
980 PointDataIndex32* buf = nullptr;
981
982
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 1 io::readCompressedValues(ss, buf, count, valueMask, false);
983 int test2;
984
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 1 ss.read(reinterpret_cast<char*>(&test2), sizeof(int));
985
986
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 1 EXPECT_EQ(test, test2);
987 }
988 }
989
990 { // two values for non-compressible example
991
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 2 std::stringstream ss;
992
993 Index count = 2;
994
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 3 std::unique_ptr<PointDataIndex32[]> srcBuf(new PointDataIndex32[count]);
995
996
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 3 for (Index i = 0; i < count; i++) srcBuf[i] = i;
997
998
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 1 io::writeCompressedValues(ss, srcBuf.get(), count, valueMask, childMask, false);
999
1000
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 3 std::unique_ptr<PointDataIndex32[]> destBuf(new PointDataIndex32[count]);
1001
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 1 io::readCompressedValues(ss, destBuf.get(), count, valueMask, false);
1003
1004
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 3 for (Index i = 0; i < count; i++) {
1005
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 2 EXPECT_EQ(srcBuf.get()[i], destBuf.get()[i]);
1006 }
1007 }
1008
1009 { // throw at limit of 16-bit
1010
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 2 std::stringstream ss;
1011 PointDataIndex32* buf = nullptr;
1012 Index count = std::numeric_limits<uint16_t>::max();
1013
1014
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 2 EXPECT_THROW(io::writeCompressedValues(ss, buf, count, valueMask, childMask, false),
1015 IoError);
1016
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 2 EXPECT_THROW(io::readCompressedValues(ss, buf, count, valueMask, false), IoError);
1017 }
1018 1 }
1019
1020
1021
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 2 TEST_F(TestPointDataLeaf, testIO)
1022 {
1023 using AttributeVec3s = TypedAttributeArray<openvdb::Vec3s>;
1024 using AttributeF = TypedAttributeArray<float>;
1025
1026 // create a descriptor
1027
1028 using Descriptor = AttributeSet::Descriptor;
1029
1030 1 Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType());
1031
1032 // create a leaf and initialize attributes using this descriptor
1033
1034 const size_t size = LeafType::NUM_VOXELS;
1035
1036
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 1 LeafType leaf(openvdb::Coord(0, 0, 0));
1037
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 1 leaf.initializeAttributes(descrA, /*arrayLength=*/size/2);
1038
1039
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 2 descrA = descrA->duplicateAppend("density", AttributeF::attributeType());
1040
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 2 leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("density"));
1041
1042 // manually activate some voxels
1043
1044
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 1 leaf.setOffsetOn(1, 10);
1045
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 1 leaf.setOffsetOn(4, 20);
1046 1 leaf.setOffsetOn(7, 5);
1047
1048 // manually change some values in the density array
1049
1050 TypedAttributeArray<float>& attr =
1051
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 1 TypedAttributeArray<float>::cast(leaf.attributeArray("density"));
1052
1053
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 1 attr.set(0, 5.0f);
1054
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 1 attr.set(50, 2.0f);
1055
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 1 attr.set(51, 8.1f);
1056
1057 // read and write topology to disk
1058
1059 {
1060
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 1 LeafType leaf2(openvdb::Coord(0, 0, 0));
1061
1062
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 2 std::ostringstream ostr(std::ios_base::binary);
1063 leaf.writeTopology(ostr);
1064
1065
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 3 std::istringstream istr(ostr.str(), std::ios_base::binary);
1066 leaf2.readTopology(istr);
1067
1068 // check topology matches
1069
1070
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 1 EXPECT_EQ(leaf.onVoxelCount(), leaf2.onVoxelCount());
1071
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 1 EXPECT_TRUE(leaf2.isValueOn(4));
1072
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 1 EXPECT_TRUE(!leaf2.isValueOn(5));
1073
1074 // check only topology (values and attributes still empty)
1075
1076
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 1 EXPECT_EQ(leaf2.getValue(4), ValueType(0));
1077
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 1 EXPECT_EQ(leaf2.attributeSet().size(), size_t(0));
1078 }
1079
1080 // read and write buffers to disk
1081
1082 {
1083
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 1 LeafType leaf2(openvdb::Coord(0, 0, 0));
1084
1085
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 1 io::StreamMetadata::Ptr streamMetadata(new io::StreamMetadata);
1086
1087
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 2 std::ostringstream ostr(std::ios_base::binary);
1088
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 1 io::setStreamMetadataPtr(ostr, streamMetadata);
1089
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 1 io::setDataCompression(ostr, io::COMPRESS_BLOSC);
1090 leaf.writeTopology(ostr);
1091
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 9 for (Index b = 0; b < leaf.buffers(); b++) {
1092
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 8 uint32_t pass = (uint32_t(leaf.buffers()) << 16) | uint32_t(b);
1093
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 8 streamMetadata->setPass(pass);
1094
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 8 leaf.writeBuffers(ostr);
1095 }
1096 { // error checking
1097
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 1 streamMetadata->setPass(1000);
1098
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 1 leaf.writeBuffers(ostr);
1099
1100 1 io::StreamMetadata::Ptr meta;
1101
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 1 io::setStreamMetadataPtr(ostr, meta);
1102
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 2 EXPECT_THROW(leaf.writeBuffers(ostr), openvdb::IoError);
1103 }
1104
1105
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 2 std::istringstream istr(ostr.str(), std::ios_base::binary);
1106
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 1 io::setStreamMetadataPtr(istr, streamMetadata);
1107
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 1 io::setDataCompression(istr, io::COMPRESS_BLOSC);
1108
1109 // Since the input stream doesn't include a VDB header with file format version info,
1110 // tag the input stream explicitly with the current version number.
1111
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 1 io::setCurrentVersion(istr);
1112
1113 leaf2.readTopology(istr);
1114
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 9 for (Index b = 0; b < leaf.buffers(); b++) {
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 8 uint32_t pass = (uint32_t(leaf.buffers()) << 16) | uint32_t(b);
1116
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 8 streamMetadata->setPass(pass);
1117 leaf2.readBuffers(istr);
1118 }
1119
1120 // check topology matches
1121
1122
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 1 EXPECT_EQ(leaf.onVoxelCount(), leaf2.onVoxelCount());
1123
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 1 EXPECT_TRUE(leaf2.isValueOn(4));
1124
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 1 EXPECT_TRUE(!leaf2.isValueOn(5));
1125
1126 // check only topology (values and attributes still empty)
1127
1128
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 1 EXPECT_EQ(leaf2.getValue(4), ValueType(20));
1129
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 1 EXPECT_EQ(leaf2.attributeSet().size(), size_t(2));
1130 }
1131
1132 { // test multi-buffer IO
1133 // create a new grid with a single origin leaf
1134
1135
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 1 PointDataGrid::Ptr grid = PointDataGrid::create();
1136
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 2 grid->setName("points");
1137
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 1 grid->tree().addLeaf(new LeafType(leaf));
1138
1139 1 openvdb::GridCPtrVec grids;
1140 ✗ grids.push_back(grid);
1141
1142 // write to file
1143
1144 {
1145
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 3 io::File file("leaf.vdb");
1146 ✗ file.write(grids);
1147
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 1 file.close();
1148 }
1149
1150 { // read grids from file (using delayed loading)
1151 1 PointDataGrid::Ptr gridFromDisk;
1152
1153 {
1154
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 3 io::File file("leaf.vdb");
1155
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 1 file.open();
1156
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 1 openvdb::GridBase::Ptr baseGrid = file.readGrid("points");
1157
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 1 file.close();
1158
1159
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 1 gridFromDisk = openvdb::gridPtrCast<PointDataGrid>(baseGrid);
1160 }
1161
1162
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 1 LeafType* leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 0));
1163
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 1 EXPECT_TRUE(leafFromDisk);
1164
1165
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 1 EXPECT_TRUE(leaf == *leafFromDisk);
1166 }
1167
1168 { // read grids from file and pre-fetch
1169 1 PointDataGrid::Ptr gridFromDisk;
1170
1171 {
1172
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 3 io::File file("leaf.vdb");
1173
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 1 file.open();
1174
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 1 openvdb::GridBase::Ptr baseGrid = file.readGrid("points");
1175
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 1 file.close();
1176
1177
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 1 gridFromDisk = openvdb::gridPtrCast<PointDataGrid>(baseGrid);
1178 }
1179
1180
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 1 LeafType* leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 0));
1181
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 1 EXPECT_TRUE(leafFromDisk);
1182
1183 const AttributeVec3s& position(
1184
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 2 AttributeVec3s::cast(leafFromDisk->constAttributeArray("P")));
1185 const AttributeF& density(
1186
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 3 AttributeF::cast(leafFromDisk->constAttributeArray("density")));
1187
1188
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 1 EXPECT_TRUE(leafFromDisk->buffer().isOutOfCore());
1189 #ifdef OPENVDB_USE_BLOSC
1190
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 1 EXPECT_TRUE(position.isOutOfCore());
1191
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 1 EXPECT_TRUE(density.isOutOfCore());
1192 #else
1193 // delayed-loading is only available on attribute arrays when using Blosc
1194 EXPECT_TRUE(!position.isOutOfCore());
1195 EXPECT_TRUE(!density.isOutOfCore());
1196 #endif
1197
1198 // prefetch voxel data only
1199
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 1 prefetch(gridFromDisk->tree(), /*position=*/false, /*attributes=*/false);
1200
1201 // ensure out-of-core data is now in-core after pre-fetching
1202
1203
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 1 EXPECT_TRUE(!leafFromDisk->buffer().isOutOfCore());
1204 #ifdef OPENVDB_USE_BLOSC
1205
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 1 EXPECT_TRUE(position.isOutOfCore());
1206
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 1 EXPECT_TRUE(density.isOutOfCore());
1207 #else
1208 EXPECT_TRUE(!position.isOutOfCore());
1209 EXPECT_TRUE(!density.isOutOfCore());
1210 #endif
1211
1212 { // re-open
1213
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 3 io::File file("leaf.vdb");
1214
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 1 file.open();
1215
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 1 openvdb::GridBase::Ptr baseGrid = file.readGrid("points");
1216
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 1 file.close();
1217
1218
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 1 gridFromDisk = openvdb::gridPtrCast<PointDataGrid>(baseGrid);
1219 }
1220
1221
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 1 leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 0));
1222
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 1 EXPECT_TRUE(leafFromDisk);
1223
1224 const AttributeVec3s& position2(
1225
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 2 AttributeVec3s::cast(leafFromDisk->constAttributeArray("P")));
1226 const AttributeF& density2(
1227
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 3 AttributeF::cast(leafFromDisk->constAttributeArray("density")));
1228
1229 // prefetch voxel and position attribute data
1230
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 1 prefetch(gridFromDisk->tree(), /*position=*/true, /*attribute=*/false);
1231
1232 // ensure out-of-core voxel and position data is now in-core after pre-fetching
1233
1234
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 1 EXPECT_TRUE(!leafFromDisk->buffer().isOutOfCore());
1235
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 1 EXPECT_TRUE(!position2.isOutOfCore());
1236 #ifdef OPENVDB_USE_BLOSC
1237
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 1 EXPECT_TRUE(density2.isOutOfCore());
1238 #else
1239 EXPECT_TRUE(!density2.isOutOfCore());
1240 #endif
1241
1242 { // re-open
1243
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 3 io::File file("leaf.vdb");
1244
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 1 file.open();
1245
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 1 openvdb::GridBase::Ptr baseGrid = file.readGrid("points");
1246
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 1 file.close();
1247
1248
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 1 gridFromDisk = openvdb::gridPtrCast<PointDataGrid>(baseGrid);
1249 }
1250
1251
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 1 leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 0));
1252
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 1 EXPECT_TRUE(leafFromDisk);
1253
1254 const AttributeVec3s& position3(
1255
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 2 AttributeVec3s::cast(leafFromDisk->constAttributeArray("P")));
1256 const AttributeF& density3(
1257
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 3 AttributeF::cast(leafFromDisk->constAttributeArray("density")));
1258
1259 // prefetch all data
1260
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 1 prefetch(gridFromDisk->tree());
1261
1262 // ensure out-of-core voxel and position data is now in-core after pre-fetching
1263
1264
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 1 EXPECT_TRUE(!leafFromDisk->buffer().isOutOfCore());
1265
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 1 EXPECT_TRUE(!position3.isOutOfCore());
1266
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 1 EXPECT_TRUE(!density3.isOutOfCore());
1267 }
1268
1269 1 remove("leaf.vdb");
1270 }
1271
1272 { // test multi-buffer IO with varying attribute storage per-leaf
1273 // create a new grid with three leaf nodes
1274
1275
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 1 PointDataGrid::Ptr grid = PointDataGrid::create();
1276
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 2 grid->setName("points");
1277
1278
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 1 Descriptor::Ptr descrB = Descriptor::create(AttributeVec3s::attributeType());
1279
1280 // create leaf nodes and initialize attributes using this descriptor
1281
1282
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 1 LeafType leaf0(openvdb::Coord(0, 0, 0));
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 1 LeafType leaf1(openvdb::Coord(0, 8, 0));
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 1 LeafType leaf2(openvdb::Coord(0, 0, 8));
1285
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 1 leaf0.initializeAttributes(descrB, /*arrayLength=*/2);
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 1 leaf1.initializeAttributes(descrB, /*arrayLength=*/2);
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 1 leaf2.initializeAttributes(descrB, /*arrayLength=*/2);
1289
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 2 descrB = descrB->duplicateAppend("density", AttributeF::attributeType());
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 2 size_t index = descrB->find("density");
1292
1293 // append density attribute to leaf 0 and leaf 2 (not leaf 1)
1294
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 1 leaf0.appendAttribute(leaf0.attributeSet().descriptor(), descrB, index);
1296 1 leaf2.appendAttribute(leaf2.attributeSet().descriptor(), descrB, index);
1297
1298 // manually change some values in the density array for leaf 0 and leaf 2
1299
1300 TypedAttributeArray<float>& attr0 =
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 1 TypedAttributeArray<float>::cast(leaf0.attributeArray("density"));
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 1 attr0.set(0, 2.0f);
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 1 attr0.set(1, 2.0f);
1305
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 1 attr0.compact();
1307
1308 // compact only the attribute array in the second leaf
1309
1310 TypedAttributeArray<float>& attr2 =
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 1 TypedAttributeArray<float>::cast(leaf2.attributeArray("density"));
1312
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 1 attr2.set(0, 5.0f);
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 1 attr2.set(1, 5.0f);
1315
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 1 attr2.compact();
1317
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 1 EXPECT_TRUE(attr0.isUniform());
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 1 EXPECT_TRUE(attr2.isUniform());
1320
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 1 grid->tree().addLeaf(new LeafType(leaf0));
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 1 grid->tree().addLeaf(new LeafType(leaf1));
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 1 grid->tree().addLeaf(new LeafType(leaf2));
1324
1325 1 openvdb::GridCPtrVec grids;
1326 ✗ grids.push_back(grid);
1327
1328 { // write to file
1329
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 3 io::File file("leaf.vdb");
1330 ✗ file.write(grids);
1331
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 1 file.close();
1332 }
1333
1334 { // read grids from file (using delayed loading)
1335 1 PointDataGrid::Ptr gridFromDisk;
1336
1337 {
1338
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 3 io::File file("leaf.vdb");
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 1 file.open();
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 1 openvdb::GridBase::Ptr baseGrid = file.readGrid("points");
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 1 file.close();
1342
1343
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 1 gridFromDisk = openvdb::gridPtrCast<PointDataGrid>(baseGrid);
1344 }
1345
1346
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 1 LeafType* leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 0));
1347
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 1 EXPECT_TRUE(leafFromDisk);
1348
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 1 EXPECT_TRUE(leaf0 == *leafFromDisk);
1349
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 1 leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 8, 0));
1351
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 1 EXPECT_TRUE(leafFromDisk);
1352
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 1 EXPECT_TRUE(leaf1 == *leafFromDisk);
1353
1354
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 1 leafFromDisk = gridFromDisk->tree().probeLeaf(openvdb::Coord(0, 0, 8));
1355
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 1 EXPECT_TRUE(leafFromDisk);
1356
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 1 EXPECT_TRUE(leaf2 == *leafFromDisk);
1357 }
1358
1359 1 remove("leaf.vdb");
1360 }
1361 1 }
1362
1363
1364
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 2 TEST_F(TestPointDataLeaf, testSwap)
1365 {
1366 using AttributeVec3s = TypedAttributeArray<openvdb::Vec3s>;
1367 using AttributeF = TypedAttributeArray<float>;
1368 using AttributeI = TypedAttributeArray<int>;
1369
1370 // create a descriptor
1371
1372 using Descriptor = AttributeSet::Descriptor;
1373
1374 1 Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType());
1375
1376 // create a leaf and initialize attributes using this descriptor
1377
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 1 const Index initialArrayLength = 100;
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 1 LeafType leaf(openvdb::Coord(0, 0, 0));
1380
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 1 leaf.initializeAttributes(descrA, /*arrayLength=*/initialArrayLength);
1381
1382
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 2 descrA = descrA->duplicateAppend("density", AttributeF::attributeType());
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 2 leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("density"));
1384
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 2 descrA = descrA->duplicateAppend("id", AttributeI::attributeType());
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 2 leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("id"));
1387
1388 // swap out the underlying attribute set with a new attribute set with a matching
1389 // descriptor
1390
1391
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 1 EXPECT_EQ(initialArrayLength, leaf.attributeSet().get("density")->size());
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 1 EXPECT_EQ(initialArrayLength, leaf.attributeSet().get("id")->size());
1393
1394
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 1 descrA = Descriptor::create(AttributeVec3s::attributeType());
1395
1396 1 const Index newArrayLength = initialArrayLength / 2;
1397
1398
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 1 AttributeSet* newAttributeSet(new AttributeSet(descrA, /*arrayLength*/newArrayLength));
1399
1400
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 2 newAttributeSet->appendAttribute("density", AttributeF::attributeType());
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 2 newAttributeSet->appendAttribute("id", AttributeI::attributeType());
1402
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 1 leaf.replaceAttributeSet(newAttributeSet);
1404
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 1 EXPECT_EQ(newArrayLength, leaf.attributeSet().get("density")->size());
1406
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 1 EXPECT_EQ(newArrayLength, leaf.attributeSet().get("id")->size());
1407
1408 // ensure we refuse to swap when the attribute set is null
1409
1410
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 2 EXPECT_THROW(leaf.replaceAttributeSet(nullptr), openvdb::ValueError);
1411
1412 // ensure we refuse to swap when the descriptors do not match,
1413 // unless we explicitly allow a mismatch.
1414
1415
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 1 Descriptor::Ptr descrB = Descriptor::create(AttributeVec3s::attributeType());
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 1 AttributeSet* attributeSet = new AttributeSet(descrB, newArrayLength);
1417
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 2 attributeSet->appendAttribute("extra", AttributeF::attributeType());
1419
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 2 EXPECT_THROW(leaf.replaceAttributeSet(attributeSet), openvdb::ValueError);
1421
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 1 leaf.replaceAttributeSet(attributeSet, true);
1423
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 1 EXPECT_EQ(const_cast<AttributeSet*>(&leaf.attributeSet()), attributeSet);
1424 1 }
1425
1426
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 2 TEST_F(TestPointDataLeaf, testCopyOnWrite)
1427 {
1428 using AttributeVec3s = TypedAttributeArray<openvdb::Vec3s>;
1429 using AttributeF = TypedAttributeArray<float>;
1430
1431 // create a descriptor
1432
1433 using Descriptor = AttributeSet::Descriptor;
1434
1435 1 Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType());
1436
1437 // create a leaf and initialize attributes using this descriptor
1438
1439 const Index initialArrayLength = 100;
1440
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 1 LeafType leaf(openvdb::Coord(0, 0, 0));
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 1 leaf.initializeAttributes(descrA, /*arrayLength=*/initialArrayLength);
1442
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 2 descrA = descrA->duplicateAppend("density", AttributeF::attributeType());
1444
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 2 leaf.appendAttribute(leaf.attributeSet().descriptor(), descrA, descrA->find("density"));
1445
1446 const AttributeSet& attributeSet = leaf.attributeSet();
1447
1448
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 1 EXPECT_EQ(attributeSet.size(), size_t(2));
1449
1450 // ensure attribute arrays are shared between leaf nodes until write
1451
1452
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 1 const LeafType leafCopy(leaf);
1453
1454 const AttributeSet& attributeSetCopy = leafCopy.attributeSet();
1455
1456
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 1 EXPECT_TRUE(attributeSet.isShared(/*pos=*/1));
1457
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 1 EXPECT_TRUE(attributeSetCopy.isShared(/*pos=*/1));
1458
1459 // test that from a const leaf, accesses to the attribute arrays do not
1460 // make then unique
1461
1462
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 1 const AttributeArray* constArray = attributeSetCopy.getConst(/*pos=*/1);
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 1 EXPECT_TRUE(constArray);
1464
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 1 EXPECT_TRUE(attributeSet.isShared(/*pos=*/1));
1466
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 1 EXPECT_TRUE(attributeSetCopy.isShared(/*pos=*/1));
1467
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 1 constArray = attributeSetCopy.get(/*pos=*/1);
1469
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 1 EXPECT_TRUE(attributeSet.isShared(/*pos=*/1));
1471
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 1 EXPECT_TRUE(attributeSetCopy.isShared(/*pos=*/1));
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1473
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 1 constArray = &(leafCopy.attributeArray(/*pos=*/1));
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 1 EXPECT_TRUE(attributeSet.isShared(/*pos=*/1));
1476
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 1 EXPECT_TRUE(attributeSetCopy.isShared(/*pos=*/1));
1477
1478
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 1 constArray = &(leafCopy.attributeArray("density"));
1479
1480
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 1 EXPECT_TRUE(attributeSet.isShared(/*pos=*/1));
1481
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 1 EXPECT_TRUE(attributeSetCopy.isShared(/*pos=*/1));
1482
1483 // test makeUnique is called from non const getters
1484
1485
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 1 AttributeArray* attributeArray = &(leaf.attributeArray(/*pos=*/1));
1486
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 1 EXPECT_TRUE(attributeArray);
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 1 EXPECT_TRUE(!attributeSet.isShared(/*pos=*/1));
1489
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 1 EXPECT_TRUE(!attributeSetCopy.isShared(/*pos=*/1));
1490 1 }
1491
1492
1493
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 1 TEST_F(TestPointDataLeaf, testCopyDescriptor)
1494 {
1495 using AttributeVec3s = TypedAttributeArray<Vec3s>;
1496 using AttributeS = TypedAttributeArray<float>;
1497
1498 using LeafNode = PointDataTree::LeafNodeType;
1499
1500 2 PointDataTree tree;
1501
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 1 LeafNode* leaf = tree.touchLeaf(openvdb::Coord(0, 0, 0));
1503
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 1 LeafNode* leaf2 = tree.touchLeaf(openvdb::Coord(0, 8, 0));
1504
1505 // create a descriptor
1506
1507 using Descriptor = AttributeSet::Descriptor;
1508
1509 Descriptor::Inserter names;
1510
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 2 names.add("density", AttributeS::attributeType());
1511
1512
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 1 Descriptor::Ptr descrA = Descriptor::create(AttributeVec3s::attributeType());
1513
1514 // initialize attributes using this descriptor
1515
1516
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 1 leaf->initializeAttributes(descrA, /*arrayLength=*/100);
1517
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 1 leaf2->initializeAttributes(descrA, /*arrayLength=*/50);
1518
1519 // copy the PointDataTree and ensure that descriptors are shared
1520
1521
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 2 PointDataTree tree2(tree);
1522
1523
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 1 EXPECT_EQ(tree2.leafCount(), openvdb::Index32(2));
1524
1525
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 2 descrA->setGroup("test", size_t(1));
1526
1527 PointDataTree::LeafCIter iter2 = tree2.cbeginLeaf();
1528
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 2 EXPECT_TRUE(iter2->attributeSet().descriptor().hasGroup("test"));
1529 ++iter2;
1530
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 2 EXPECT_TRUE(iter2->attributeSet().descriptor().hasGroup("test"));
1531
1532 // call makeDescriptorUnique and ensure that descriptors are no longer shared
1533
1534
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 1 Descriptor::Ptr newDescriptor = makeDescriptorUnique(tree2);
1535
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 1 EXPECT_TRUE(newDescriptor);
1536
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 2 descrA->setGroup("test2", size_t(2));
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 1 iter2 = tree2.cbeginLeaf();
1540
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 1 EXPECT_TRUE(!iter2->attributeSet().descriptor().hasGroup("test2"));
1541 ++iter2;
1542
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 1 EXPECT_TRUE(!iter2->attributeSet().descriptor().hasGroup("test2"));
1543 1 }
1544