GCC Code Coverage Report


Directory: ./
File: openvdb/openvdb/unittest/TestPointCount.cc
Date: 2022-07-25 17:40:05
Exec Total Coverage
Lines: 347 347 100.0%
Functions: 10 10 100.0%
Branches: 669 3524 19.0%

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/TempFile.h>
7
8 #include <openvdb/points/PointGroup.h>
9 #include <openvdb/points/PointCount.h>
10 #include <openvdb/points/PointConversion.h>
11
12 #include <gtest/gtest.h>
13
14 #include <cmath>
15 #include <cstdio> // for std::remove()
16 #include <cstdlib> // for std::getenv()
17 #include <string>
18 #include <vector>
19
20 using namespace openvdb;
21 using namespace openvdb::points;
22
23 4 class TestPointCount: public ::testing::Test
24 {
25 public:
26 4 void SetUp() override { openvdb::initialize(); }
27 4 void TearDown() override { openvdb::uninitialize(); }
28 }; // class TestPointCount
29
30 using LeafType = PointDataTree::LeafNodeType;
31 using ValueType = LeafType::ValueType;
32
33
34 struct NotZeroFilter
35 {
36 NotZeroFilter() = default;
37 static bool initialized() { return true; }
38 template <typename LeafT>
39 void reset(const LeafT&) { }
40 template <typename IterT>
41 bool valid(const IterT& iter) const {
42 return *iter != 0;
43 }
44 };
45
46
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2 TEST_F(TestPointCount, testCount)
47 {
48 // create a tree and check there are no points
49
50 PointDataGrid::Ptr grid = createGrid<PointDataGrid>();
51 PointDataTree& tree = grid->tree();
52
53
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1 EXPECT_EQ(pointCount(tree), Index64(0));
54
55 // add a new leaf to a tree and re-test
56
57 1 LeafType* leafPtr = tree.touchLeaf(openvdb::Coord(0, 0, 0));
58 LeafType& leaf(*leafPtr);
59
60
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1 EXPECT_EQ(pointCount(tree), Index64(0));
61
62 // now manually set some offsets
63
64
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1 leaf.setOffsetOn(0, 4);
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1 leaf.setOffsetOn(1, 7);
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67
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1 ValueVoxelCIter voxelIter = leaf.beginValueVoxel(openvdb::Coord(0, 0, 0));
68
69 IndexIter<ValueVoxelCIter, NullFilter> testIter(voxelIter, NullFilter());
70
71 1 leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0));
72
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2 EXPECT_EQ(int(*leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0))), 0);
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2 EXPECT_EQ(int(leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0)).end()), 4);
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2 EXPECT_EQ(int(*leaf.beginIndexVoxel(openvdb::Coord(0, 0, 1))), 4);
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2 EXPECT_EQ(int(leaf.beginIndexVoxel(openvdb::Coord(0, 0, 1)).end()), 7);
78
79 // test filtered, index voxel iterator
80
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2 EXPECT_EQ(int(*leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0), NotZeroFilter())), 1);
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2 EXPECT_EQ(int(leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0), NotZeroFilter()).end()), 4);
83
84 {
85 1 LeafType::IndexVoxelIter iter = leaf.beginIndexVoxel(openvdb::Coord(0, 0, 0));
86
87
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1 EXPECT_EQ(int(*iter), 0);
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1 EXPECT_EQ(int(iter.end()), 4);
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90 1 LeafType::IndexVoxelIter iter2 = leaf.beginIndexVoxel(openvdb::Coord(0, 0, 1));
91
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1 EXPECT_EQ(int(*iter2), 4);
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1 EXPECT_EQ(int(iter2.end()), 7);
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1 EXPECT_EQ(iterCount(iter2), Index64(7 - 4));
96
97 // check pointCount ignores active/inactive state
98
99 leaf.setValueOff(1);
100
101 1 LeafType::IndexVoxelIter iter3 = leaf.beginIndexVoxel(openvdb::Coord(0, 0, 1));
102
103
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1 EXPECT_EQ(iterCount(iter3), Index64(7 - 4));
104
105 leaf.setValueOn(1);
106 }
107
108 // one point per voxel
109
110
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513 for (unsigned int i = 0; i < LeafType::SIZE; i++) {
111 512 leaf.setOffsetOn(i, i);
112 }
113
114
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1 EXPECT_EQ(leaf.pointCount(), Index64(LeafType::SIZE - 1));
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1 EXPECT_EQ(leaf.onPointCount(), Index64(LeafType::SIZE - 1));
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1 EXPECT_EQ(leaf.offPointCount(), Index64(0));
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1 EXPECT_EQ(pointCount(tree), Index64(LeafType::SIZE - 1));
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1 EXPECT_EQ(pointCount(tree, ActiveFilter()), Index64(LeafType::SIZE - 1));
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1 EXPECT_EQ(pointCount(tree, InactiveFilter()), Index64(0));
121
122 // manually de-activate two voxels
123
124 leaf.setValueOff(100);
125 leaf.setValueOff(101);
126
127
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1 EXPECT_EQ(leaf.pointCount(), Index64(LeafType::SIZE - 1));
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1 EXPECT_EQ(leaf.onPointCount(), Index64(LeafType::SIZE - 3));
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1 EXPECT_EQ(leaf.offPointCount(), Index64(2));
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1 EXPECT_EQ(pointCount(tree), Index64(LeafType::SIZE - 1));
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1 EXPECT_EQ(pointCount(tree, ActiveFilter()), Index64(LeafType::SIZE - 3));
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1 EXPECT_EQ(pointCount(tree, InactiveFilter()), Index64(2));
134
135 // one point per every other voxel and de-activate empty voxels
136
137 unsigned sum = 0;
138
139
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513 for (unsigned int i = 0; i < LeafType::SIZE; i++) {
140 512 leaf.setOffsetOn(i, sum);
141
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512 if (i % 2 == 0) sum++;
142 }
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1 leaf.updateValueMask();
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1 EXPECT_EQ(leaf.pointCount(), Index64(LeafType::SIZE / 2));
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1 EXPECT_EQ(leaf.onPointCount(), Index64(LeafType::SIZE / 2));
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1 EXPECT_EQ(leaf.offPointCount(), Index64(0));
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1 EXPECT_EQ(pointCount(tree), Index64(LeafType::SIZE / 2));
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1 EXPECT_EQ(pointCount(tree, ActiveFilter()), Index64(LeafType::SIZE / 2));
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1 EXPECT_EQ(pointCount(tree, InactiveFilter()), Index64(0));
153
154 // add a new non-empty leaf and check totalPointCount is correct
155
156 1 LeafType* leaf2Ptr = tree.touchLeaf(openvdb::Coord(0, 0, 8));
157 LeafType& leaf2(*leaf2Ptr);
158
159 // on adding, tree now obtains ownership and is reponsible for deletion
160
161
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513 for (unsigned int i = 0; i < LeafType::SIZE; i++) {
162 512 leaf2.setOffsetOn(i, i);
163 }
164
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1 EXPECT_EQ(pointCount(tree), Index64(LeafType::SIZE / 2 + LeafType::SIZE - 1));
166
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1 EXPECT_EQ(pointCount(tree, ActiveFilter()), Index64(LeafType::SIZE / 2 + LeafType::SIZE - 1));
167
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1 EXPECT_EQ(pointCount(tree, InactiveFilter()), Index64(0));
168 1 }
169
170
171
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2 TEST_F(TestPointCount, testGroup)
172 {
173 using namespace openvdb::math;
174
175 using Descriptor = AttributeSet::Descriptor;
176
177 // four points in the same leaf
178
179 1 std::vector<Vec3s> positions{{1, 1, 1}, {1, 2, 1}, {2, 1, 1}, {2, 2, 1}};
180
181 const float voxelSize(1.0);
182
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1 math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize));
183
184
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1 PointDataGrid::Ptr grid = createPointDataGrid<NullCodec, PointDataGrid>(positions, *transform);
185 PointDataTree& tree = grid->tree();
186
187 // check one leaf
188
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1 EXPECT_EQ(tree.leafCount(), Index32(1));
189
190 // retrieve first and last leaf attribute sets
191
192 PointDataTree::LeafIter leafIter = tree.beginLeaf();
193 const AttributeSet& firstAttributeSet = leafIter->attributeSet();
194
195 // ensure zero groups
196
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1 EXPECT_EQ(firstAttributeSet.descriptor().groupMap().size(), size_t(0));
197
198 {// add an empty group
199
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1 appendGroup(tree, "test");
200
201
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1 EXPECT_EQ(firstAttributeSet.descriptor().groupMap().size(), size_t(1));
202
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1 EXPECT_EQ(pointCount(tree), Index64(4));
204
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1 EXPECT_EQ(pointCount(tree, ActiveFilter()), Index64(4));
205
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1 EXPECT_EQ(pointCount(tree, InactiveFilter()), Index64(0));
206
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1 EXPECT_EQ(leafIter->pointCount(), Index64(4));
207
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1 EXPECT_EQ(leafIter->onPointCount(), Index64(4));
208
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1 EXPECT_EQ(leafIter->offPointCount(), Index64(0));
209
210 // no points found when filtered by the empty group
211
212
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2 EXPECT_EQ(pointCount(tree, GroupFilter("test", firstAttributeSet)), Index64(0));
213
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1 EXPECT_EQ(leafIter->groupPointCount("test"), Index64(0));
214 }
215
216 { // assign two points to the group, test offsets and point counts
217
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1 const Descriptor::GroupIndex index = firstAttributeSet.groupIndex("test");
218
219
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1 EXPECT_TRUE(index.first != AttributeSet::INVALID_POS);
220
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1 EXPECT_TRUE(index.first < firstAttributeSet.size());
221
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1 AttributeArray& array = leafIter->attributeArray(index.first);
223
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1 EXPECT_TRUE(isGroup(array));
225
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1 GroupAttributeArray& groupArray = GroupAttributeArray::cast(array);
227
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1 groupArray.set(0, GroupType(1) << index.second);
229
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1 groupArray.set(3, GroupType(1) << index.second);
230
231 // only two out of four points should be found when group filtered
232
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1 GroupFilter firstGroupFilter("test", firstAttributeSet);
234
235
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2 EXPECT_EQ(pointCount(tree, GroupFilter("test", firstAttributeSet)), Index64(2));
236
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1 EXPECT_EQ(leafIter->groupPointCount("test"), Index64(2));
237
238 {
239
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1 EXPECT_EQ(pointCount(tree, BinaryFilter<GroupFilter, ActiveFilter>(
240 firstGroupFilter, ActiveFilter())), Index64(2));
241
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1 EXPECT_EQ(pointCount(tree, BinaryFilter<GroupFilter, InactiveFilter>(
242 firstGroupFilter, InactiveFilter())), Index64(0));
243 }
244
245
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1 EXPECT_NO_THROW(leafIter->validateOffsets());
246
247 // manually modify offsets so one of the points is marked as inactive
248
249 std::vector<ValueType> offsets, modifiedOffsets;
250
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1 offsets.resize(PointDataTree::LeafNodeType::SIZE);
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1 modifiedOffsets.resize(PointDataTree::LeafNodeType::SIZE);
252
253
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513 for (Index n = 0; n < PointDataTree::LeafNodeType::NUM_VALUES; n++) {
254
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512 const unsigned offset = leafIter->getValue(n);
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512 offsets[n] = offset;
256
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512 modifiedOffsets[n] = offset > 0 ? offset - 1 : offset;
257 }
258
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1 leafIter->setOffsets(modifiedOffsets);
260
261 // confirm that validation fails
262
263
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2 EXPECT_THROW(leafIter->validateOffsets(), openvdb::ValueError);
264
265 // replace offsets with original offsets but leave value mask
266
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1 leafIter->setOffsets(offsets, /*updateValueMask=*/ false);
268
269 // confirm that validation now succeeds
270
271
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1 EXPECT_NO_THROW(leafIter->validateOffsets());
272
273 // ensure active / inactive point counts are correct
274
275
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2 EXPECT_EQ(pointCount(tree, GroupFilter("test", firstAttributeSet)), Index64(2));
276
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1 EXPECT_EQ(leafIter->groupPointCount("test"), Index64(2));
277
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1 EXPECT_EQ(pointCount(tree, BinaryFilter<GroupFilter, ActiveFilter>(
278 firstGroupFilter, ActiveFilter())), Index64(1));
279
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1 EXPECT_EQ(pointCount(tree, BinaryFilter<GroupFilter, InactiveFilter>(
280 firstGroupFilter, InactiveFilter())), Index64(1));
281
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1 EXPECT_EQ(pointCount(tree), Index64(4));
283
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1 EXPECT_EQ(pointCount(tree, ActiveFilter()), Index64(3));
284
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1 EXPECT_EQ(pointCount(tree, InactiveFilter()), Index64(1));
285
286 std::string filename;
287
288 // write out grid to a temp file
289 {
290
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2 io::TempFile file;
291
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1 filename = file.filename();
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2 io::File fileOut(filename);
293
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2 GridCPtrVec grids{grid};
294 1 fileOut.write(grids);
295 }
296
297 // test point count of a delay-loaded grid
298 {
299
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2 io::File fileIn(filename);
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1 fileIn.open();
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1 GridPtrVecPtr grids = fileIn.getGrids();
303
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1 fileIn.close();
305
306
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1 EXPECT_EQ(grids->size(), size_t(1));
307
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1 PointDataGrid::Ptr inputGrid = GridBase::grid<PointDataGrid>((*grids)[0]);
309
310
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1 EXPECT_TRUE(inputGrid);
311
312 PointDataTree& inputTree = inputGrid->tree();
313 1 const auto& attributeSet = inputTree.cbeginLeaf()->attributeSet();
314
315
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1 GroupFilter groupFilter("test", attributeSet);
316
317 bool inCoreOnly = true;
318
319
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1 EXPECT_EQ(pointCount(inputTree, NullFilter(), inCoreOnly), Index64(0));
320
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1 EXPECT_EQ(pointCount(inputTree, ActiveFilter(), inCoreOnly), Index64(0));
321
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1 EXPECT_EQ(pointCount(inputTree, InactiveFilter(), inCoreOnly), Index64(0));
322
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1 EXPECT_EQ(pointCount(inputTree, groupFilter, inCoreOnly), Index64(0));
323
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1 EXPECT_EQ(pointCount(inputTree, BinaryFilter<GroupFilter, ActiveFilter>(
324 groupFilter, ActiveFilter()), inCoreOnly), Index64(0));
325
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1 EXPECT_EQ(pointCount(inputTree, BinaryFilter<GroupFilter, InactiveFilter>(
326 groupFilter, InactiveFilter()), inCoreOnly), Index64(0));
327
328 inCoreOnly = false;
329
330
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1 EXPECT_EQ(pointCount(inputTree, NullFilter(), inCoreOnly), Index64(4));
331
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1 EXPECT_EQ(pointCount(inputTree, ActiveFilter(), inCoreOnly), Index64(3));
332
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1 EXPECT_EQ(pointCount(inputTree, InactiveFilter(), inCoreOnly), Index64(1));
333
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1 EXPECT_EQ(pointCount(inputTree, groupFilter, inCoreOnly), Index64(2));
334
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1 EXPECT_EQ(pointCount(inputTree, BinaryFilter<GroupFilter, ActiveFilter>(
335 groupFilter, ActiveFilter()), inCoreOnly), Index64(1));
336
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1 EXPECT_EQ(pointCount(inputTree, BinaryFilter<GroupFilter, InactiveFilter>(
337 groupFilter, InactiveFilter()), inCoreOnly), Index64(1));
338 }
339
340 1 std::remove(filename.c_str());
341
342 // update the value mask and confirm point counts once again
343
344
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1 leafIter->updateValueMask();
345
346
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1 EXPECT_NO_THROW(leafIter->validateOffsets());
347
348 1 auto& attributeSet = tree.cbeginLeaf()->attributeSet();
349
350
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2 EXPECT_EQ(pointCount(tree, GroupFilter("test", attributeSet)), Index64(2));
351
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1 EXPECT_EQ(leafIter->groupPointCount("test"), Index64(2));
352
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1 EXPECT_EQ(pointCount(tree, BinaryFilter<GroupFilter, ActiveFilter>(
353 firstGroupFilter, ActiveFilter())), Index64(2));
354
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1 EXPECT_EQ(pointCount(tree, BinaryFilter<GroupFilter, InactiveFilter>(
355 firstGroupFilter, InactiveFilter())), Index64(0));
356
357
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1 EXPECT_EQ(pointCount(tree), Index64(4));
358
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1 EXPECT_EQ(pointCount(tree, ActiveFilter()), Index64(4));
359
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1 EXPECT_EQ(pointCount(tree, InactiveFilter()), Index64(0));
360 }
361
362 // create a tree with multiple leaves
363
364
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1 positions.emplace_back(20, 1, 1);
365
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1 positions.emplace_back(1, 20, 1);
366
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1 positions.emplace_back(1, 1, 20);
367
368
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2 grid = createPointDataGrid<NullCodec, PointDataGrid>(positions, *transform);
369 PointDataTree& tree2 = grid->tree();
370
371
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1 EXPECT_EQ(tree2.leafCount(), Index32(4));
372
373 1 leafIter = tree2.beginLeaf();
374
375
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2 appendGroup(tree2, "test");
376
377 { // assign two points to the group
378 const auto& attributeSet = leafIter->attributeSet();
379
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1 const Descriptor::GroupIndex index = attributeSet.groupIndex("test");
380
381
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1 EXPECT_TRUE(index.first != AttributeSet::INVALID_POS);
382
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1 EXPECT_TRUE(index.first < attributeSet.size());
383
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1 AttributeArray& array = leafIter->attributeArray(index.first);
385
386
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1 EXPECT_TRUE(isGroup(array));
387
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1 GroupAttributeArray& groupArray = GroupAttributeArray::cast(array);
389
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1 groupArray.set(0, GroupType(1) << index.second);
391
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1 groupArray.set(3, GroupType(1) << index.second);
392
393
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2 EXPECT_EQ(pointCount(tree2, GroupFilter("test", attributeSet)), Index64(2));
394
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1 EXPECT_EQ(leafIter->groupPointCount("test"), Index64(2));
395
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1 EXPECT_EQ(pointCount(tree2), Index64(7));
396 }
397
398 ++leafIter;
399
400
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1 EXPECT_TRUE(leafIter);
401
402 { // assign another point to the group in a different leaf
403 const auto& attributeSet = leafIter->attributeSet();
404
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1 const Descriptor::GroupIndex index = attributeSet.groupIndex("test");
405
406
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1 EXPECT_TRUE(index.first != AttributeSet::INVALID_POS);
407
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1 EXPECT_TRUE(index.first < leafIter->attributeSet().size());
408
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1 AttributeArray& array = leafIter->attributeArray(index.first);
410
411
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1 EXPECT_TRUE(isGroup(array));
412
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1 GroupAttributeArray& groupArray = GroupAttributeArray::cast(array);
414
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1 groupArray.set(0, GroupType(1) << index.second);
416
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2 EXPECT_EQ(pointCount(tree2, GroupFilter("test", attributeSet)), Index64(3));
418
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1 EXPECT_EQ(leafIter->groupPointCount("test"), Index64(1));
419
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1 EXPECT_EQ(pointCount(tree2), Index64(7));
420 }
421 1 }
422
423
424
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1 TEST_F(TestPointCount, testOffsets)
425 {
426 using namespace openvdb::math;
427
428 // empty tree
429 {
430 2 PointDataTree tree;
431
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1 std::vector<Index64> offsets{ 10 };
432
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1 Index64 total = pointOffsets(offsets, tree);
433
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1 EXPECT_EQ(total, Index64(0));
434
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1 EXPECT_TRUE(offsets.empty());
435 }
436
437 const float voxelSize(1.0);
438 1 math::Transform::Ptr transform(math::Transform::createLinearTransform(voxelSize));
439
440 // five points across four leafs
441
442
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1 std::vector<Vec3s> positions{{1, 1, 1}, {1, 101, 1}, {2, 101, 1}, {101, 1, 1}, {101, 101, 1}};
443
444
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1 PointDataGrid::Ptr grid = createPointDataGrid<NullCodec, PointDataGrid>(positions, *transform);
445 PointDataTree& tree = grid->tree();
446
447 { // all point offsets
448 std::vector<Index64> offsets;
449
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1 Index64 total = pointOffsets(offsets, tree);
450
451
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1 EXPECT_EQ(offsets.size(), size_t(4));
452
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1 EXPECT_EQ(offsets[0], Index64(1));
453
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1 EXPECT_EQ(offsets[1], Index64(3));
454
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1 EXPECT_EQ(offsets[2], Index64(4));
455
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1 EXPECT_EQ(offsets[3], Index64(5));
456
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1 EXPECT_EQ(total, Index64(5));
457 }
458
459 { // all point offsets when using a non-existant exclude group
460
461 std::vector<Index64> offsets;
462
463 1 std::vector<Name> includeGroups;
464
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3 std::vector<Name> excludeGroups{"empty"};
465
466
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2 MultiGroupFilter filter(includeGroups, excludeGroups, tree.cbeginLeaf()->attributeSet());
467
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1 Index64 total = pointOffsets(offsets, tree, filter);
468
469
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1 EXPECT_EQ(offsets.size(), size_t(4));
470
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1 EXPECT_EQ(offsets[0], Index64(1));
471
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1 EXPECT_EQ(offsets[1], Index64(3));
472
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1 EXPECT_EQ(offsets[2], Index64(4));
473
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1 EXPECT_EQ(offsets[3], Index64(5));
474
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1 EXPECT_EQ(total, Index64(5));
475 }
476
477
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2 appendGroup(tree, "test");
478
479 // add one point to the group from the leaf that contains two points
480
481
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1 PointDataTree::LeafIter iter = ++tree.beginLeaf();
482
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1 GroupWriteHandle groupHandle = iter->groupWriteHandle("test");
483
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1 groupHandle.set(0, true);
484
485 { // include this group
486 std::vector<Index64> offsets;
487
488
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3 std::vector<Name> includeGroups{"test"};
489 1 std::vector<Name> excludeGroups;
490
491
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2 MultiGroupFilter filter(includeGroups, excludeGroups, tree.cbeginLeaf()->attributeSet());
492
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1 Index64 total = pointOffsets(offsets, tree, filter);
493
494
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1 EXPECT_EQ(offsets.size(), size_t(4));
495
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1 EXPECT_EQ(offsets[0], Index64(0));
496
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1 EXPECT_EQ(offsets[1], Index64(1));
497
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1 EXPECT_EQ(offsets[2], Index64(1));
498
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1 EXPECT_EQ(offsets[3], Index64(1));
499
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1 EXPECT_EQ(total, Index64(1));
500 }
501
502 { // exclude this group
503 std::vector<Index64> offsets;
504
505 1 std::vector<Name> includeGroups;
506
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3 std::vector<Name> excludeGroups{"test"};
507
508
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2 MultiGroupFilter filter(includeGroups, excludeGroups, tree.cbeginLeaf()->attributeSet());
509
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1 Index64 total = pointOffsets(offsets, tree, filter);
510
511
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1 EXPECT_EQ(offsets.size(), size_t(4));
512
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1 EXPECT_EQ(offsets[0], Index64(1));
513
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1 EXPECT_EQ(offsets[1], Index64(2));
514
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1 EXPECT_EQ(offsets[2], Index64(3));
515
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1 EXPECT_EQ(offsets[3], Index64(4));
516
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1 EXPECT_EQ(total, Index64(4));
517 }
518
519 std::string filename;
520
521 // write out grid to a temp file
522 {
523
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2 io::TempFile file;
524
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1 filename = file.filename();
525
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2 io::File fileOut(filename);
526
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2 GridCPtrVec grids{grid};
527 1 fileOut.write(grids);
528 }
529
530 // test point offsets for a delay-loaded grid
531 {
532
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2 io::File fileIn(filename);
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1 fileIn.open();
534
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1 GridPtrVecPtr grids = fileIn.getGrids();
536
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1 fileIn.close();
538
539
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1 EXPECT_EQ(grids->size(), size_t(1));
540
541
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1 PointDataGrid::Ptr inputGrid = GridBase::grid<PointDataGrid>((*grids)[0]);
542
543
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1 EXPECT_TRUE(inputGrid);
544
545 PointDataTree& inputTree = inputGrid->tree();
546
547 std::vector<Index64> offsets;
548 1 std::vector<Name> includeGroups;
549 1 std::vector<Name> excludeGroups;
550
551
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2 MultiGroupFilter filter(includeGroups, excludeGroups, inputTree.cbeginLeaf()->attributeSet());
552
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1 Index64 total = pointOffsets(offsets, inputTree, filter, /*inCoreOnly=*/true);
553
554
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1 EXPECT_EQ(offsets.size(), size_t(4));
555
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1 EXPECT_EQ(offsets[0], Index64(0));
556
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1 EXPECT_EQ(offsets[1], Index64(0));
557
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1 EXPECT_EQ(offsets[2], Index64(0));
558
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1 EXPECT_EQ(offsets[3], Index64(0));
559
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1 EXPECT_EQ(total, Index64(0));
560
561 offsets.clear();
562
563
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1 total = pointOffsets(offsets, inputTree, filter, /*inCoreOnly=*/false);
564
565
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1 EXPECT_EQ(offsets.size(), size_t(4));
566
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1 EXPECT_EQ(offsets[0], Index64(1));
567
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1 EXPECT_EQ(offsets[1], Index64(3));
568
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1 EXPECT_EQ(offsets[2], Index64(4));
569
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1 EXPECT_EQ(offsets[3], Index64(5));
570
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1 EXPECT_EQ(total, Index64(5));
571 }
572
573 1 std::remove(filename.c_str());
574 1 }
575
576
577 namespace {
578
579 // sum all voxel values
580 template<typename GridT>
581 inline Index64
582 22 voxelSum(const GridT& grid)
583 {
584 Index64 total = 0;
585
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165296 for (auto iter = grid.cbeginValueOn(); iter; ++iter) {
586 165274 total += static_cast<Index64>(*iter);
587 }
588 22 return total;
589 }
590
591 // Generate random points by uniformly distributing points on a unit-sphere.
592 inline void
593 1 genPoints(std::vector<Vec3R>& positions, const int numPoints, const double scale)
594 {
595 // init
596 math::Random01 randNumber(0);
597 1 const int n = int(std::sqrt(double(numPoints)));
598 1 const double xScale = (2.0 * M_PI) / double(n);
599 1 const double yScale = M_PI / double(n);
600
601 double x, y, theta, phi;
602 Vec3R pos;
603
604 1 positions.reserve(n*n);
605
606 // loop over a [0 to n) x [0 to n) grid.
607
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201 for (int a = 0; a < n; ++a) {
608
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40200 for (int b = 0; b < n; ++b) {
609
610 // jitter, move to random pos. inside the current cell
611 40000 x = double(a) + randNumber();
612 40000 y = double(b) + randNumber();
613
614 // remap to a lat/long map
615 40000 theta = y * yScale; // [0 to PI]
616 40000 phi = x * xScale; // [0 to 2PI]
617
618 // convert to cartesian coordinates on a unit sphere.
619 // spherical coordinate triplet (r=1, theta, phi)
620 40000 pos[0] = static_cast<float>(std::sin(theta)*std::cos(phi)*scale);
621 40000 pos[1] = static_cast<float>(std::sin(theta)*std::sin(phi)*scale);
622 40000 pos[2] = static_cast<float>(std::cos(theta)*scale);
623
624 40000 positions.push_back(pos);
625 }
626 }
627 1 }
628
629 } // namespace
630
631
632
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2 TEST_F(TestPointCount, testCountGrid)
633 {
634 using namespace openvdb::math;
635
636 { // five points
637 std::vector<Vec3s> positions{ {1, 1, 1},
638 {1, 101, 1},
639 {2, 101, 1},
640 {101, 1, 1},
641 1 {101, 101, 1}};
642
643 { // in five voxels
644
645
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1 math::Transform::Ptr transform(math::Transform::createLinearTransform(1.0f));
646
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1 PointDataGrid::Ptr points = createPointDataGrid<NullCodec, PointDataGrid>(positions, *transform);
647
648 // generate a count grid with the same transform
649
650
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1 Int32Grid::Ptr count = pointCountGrid(*points);
651
652
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1 EXPECT_EQ(count->activeVoxelCount(), points->activeVoxelCount());
653
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2 EXPECT_EQ(count->evalActiveVoxelBoundingBox(), points->evalActiveVoxelBoundingBox());
654
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1 EXPECT_EQ(voxelSum(*count), pointCount(points->tree()));
655 }
656
657 { // in four voxels
658
659
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1 math::Transform::Ptr transform(math::Transform::createLinearTransform(10.0f));
660
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1 PointDataGrid::Ptr points = createPointDataGrid<NullCodec, PointDataGrid>(positions, *transform);
661
662 // generate a count grid with the same transform
663
664
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1 Int32Grid::Ptr count = pointCountGrid(*points);
665
666
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1 EXPECT_EQ(count->activeVoxelCount(), points->activeVoxelCount());
667
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2 EXPECT_EQ(count->evalActiveVoxelBoundingBox(), points->evalActiveVoxelBoundingBox());
668
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1 EXPECT_EQ(voxelSum(*count), pointCount(points->tree()));
669 }
670
671 { // in one voxel
672
673
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1 math::Transform::Ptr transform(math::Transform::createLinearTransform(1000.0f));
674
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1 PointDataGrid::Ptr points = createPointDataGrid<NullCodec, PointDataGrid>(positions, *transform);
675
676 // generate a count grid with the same transform
677
678
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1 Int32Grid::Ptr count = pointCountGrid(*points);
679
680
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1 EXPECT_EQ(count->activeVoxelCount(), points->activeVoxelCount());
681
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2 EXPECT_EQ(count->evalActiveVoxelBoundingBox(), points->evalActiveVoxelBoundingBox());
682
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1 EXPECT_EQ(voxelSum(*count), pointCount(points->tree()));
683 }
684
685 { // in four voxels, Int64 grid
686
687
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1 math::Transform::Ptr transform(math::Transform::createLinearTransform(10.0f));
688
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1 PointDataGrid::Ptr points = createPointDataGrid<NullCodec, PointDataGrid>(positions, *transform);
689
690 // generate a count grid with the same transform
691
692
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1 Int64Grid::Ptr count = pointCountGrid<PointDataGrid, Int64Grid>(*points);
693
694
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1 EXPECT_EQ(count->activeVoxelCount(), points->activeVoxelCount());
695
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2 EXPECT_EQ(count->evalActiveVoxelBoundingBox(), points->evalActiveVoxelBoundingBox());
696
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1 EXPECT_EQ(voxelSum(*count), pointCount(points->tree()));
697 }
698
699 { // in four voxels, float grid
700
701
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1 math::Transform::Ptr transform(math::Transform::createLinearTransform(10.0f));
702
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1 PointDataGrid::Ptr points = createPointDataGrid<NullCodec, PointDataGrid>(positions, *transform);
703
704 // generate a count grid with the same transform
705
706
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1 FloatGrid::Ptr count = pointCountGrid<PointDataGrid, FloatGrid>(*points);
707
708
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1 EXPECT_EQ(count->activeVoxelCount(), points->activeVoxelCount());
709
3/18
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2 EXPECT_EQ(count->evalActiveVoxelBoundingBox(), points->evalActiveVoxelBoundingBox());
710
4/20
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1 EXPECT_EQ(voxelSum(*count), pointCount(points->tree()));
711 }
712
713 { // in four voxels
714
715
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1 math::Transform::Ptr transform(math::Transform::createLinearTransform(10.0f));
716 const PointAttributeVector<Vec3s> pointList(positions);
717 tools::PointIndexGrid::Ptr pointIndexGrid =
718
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1 tools::createPointIndexGrid<tools::PointIndexGrid>(pointList, *transform);
719
720 PointDataGrid::Ptr points =
721 createPointDataGrid<NullCodec, PointDataGrid>(*pointIndexGrid,
722
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1 pointList, *transform);
723
724 auto& tree = points->tree();
725
726 // assign point 3 to new group "test"
727
728
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1 appendGroup(tree, "test");
729
730
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1 std::vector<short> groups{0,0,1,0,0};
731
732
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1 setGroup(tree, pointIndexGrid->tree(), groups, "test");
733
734
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3 std::vector<std::string> includeGroups{"test"};
735 1 std::vector<std::string> excludeGroups;
736
737 // generate a count grid with the same transform
738
739 MultiGroupFilter filter(includeGroups, excludeGroups,
740
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2 tree.cbeginLeaf()->attributeSet());
741
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1 Int32Grid::Ptr count = pointCountGrid(*points, filter);
742
743
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1 EXPECT_EQ(count->activeVoxelCount(), Index64(1));
744
3/18
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1 EXPECT_EQ(voxelSum(*count), Index64(1));
745
746 MultiGroupFilter filter2(excludeGroups, includeGroups,
747
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2 tree.cbeginLeaf()->attributeSet());
748
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1 count = pointCountGrid(*points, filter2);
749
750
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1 EXPECT_EQ(count->activeVoxelCount(), Index64(4));
751
3/18
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1 EXPECT_EQ(voxelSum(*count), Index64(4));
752 }
753 }
754
755 { // 40,000 points on a unit sphere
756 std::vector<Vec3R> positions;
757 1 const size_t total = 40000;
758
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1 genPoints(positions, total, /*scale=*/100.0);
759
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1 EXPECT_EQ(positions.size(), total);
760
761
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1 math::Transform::Ptr transform1(math::Transform::createLinearTransform(1.0f));
762
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1 math::Transform::Ptr transform5(math::Transform::createLinearTransform(5.0f));
763
764 PointDataGrid::Ptr points1 =
765
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1 createPointDataGrid<NullCodec, PointDataGrid>(positions, *transform1);
766 PointDataGrid::Ptr points5 =
767
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1 createPointDataGrid<NullCodec, PointDataGrid>(positions, *transform5);
768
769
3/20
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1 EXPECT_TRUE(points1->activeVoxelCount() != points5->activeVoxelCount());
770
3/20
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1 EXPECT_TRUE(points1->evalActiveVoxelBoundingBox() != points5->evalActiveVoxelBoundingBox());
771
4/20
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1 EXPECT_EQ(pointCount(points1->tree()), pointCount(points5->tree()));
772
773 { // generate count grids with the same transform
774
775
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1 Int32Grid::Ptr count1 = pointCountGrid(*points1);
776
777
4/20
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1 EXPECT_EQ(count1->activeVoxelCount(), points1->activeVoxelCount());
778
3/18
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2 EXPECT_EQ(count1->evalActiveVoxelBoundingBox(), points1->evalActiveVoxelBoundingBox());
779
4/20
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1 EXPECT_EQ(voxelSum(*count1), pointCount(points1->tree()));
780
781
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1 Int32Grid::Ptr count5 = pointCountGrid(*points5);
782
783
4/20
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1 EXPECT_EQ(count5->activeVoxelCount(), points5->activeVoxelCount());
784
3/18
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2 EXPECT_EQ(count5->evalActiveVoxelBoundingBox(), points5->evalActiveVoxelBoundingBox());
785
4/20
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1 EXPECT_EQ(voxelSum(*count5), pointCount(points5->tree()));
786 }
787
788 { // generate count grids with differing transforms
789
790
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1 Int32Grid::Ptr count1 = pointCountGrid(*points5, *transform1);
791
792
4/20
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1 EXPECT_EQ(count1->activeVoxelCount(), points1->activeVoxelCount());
793
3/18
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2 EXPECT_EQ(count1->evalActiveVoxelBoundingBox(), points1->evalActiveVoxelBoundingBox());
794
4/20
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1 EXPECT_EQ(voxelSum(*count1), pointCount(points5->tree()));
795
796
1/4
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1 Int32Grid::Ptr count5 = pointCountGrid(*points1, *transform5);
797
798
4/20
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1 EXPECT_EQ(count5->activeVoxelCount(), points5->activeVoxelCount());
799
3/18
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2 EXPECT_EQ(count5->evalActiveVoxelBoundingBox(), points5->evalActiveVoxelBoundingBox());
800
4/20
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1 EXPECT_EQ(voxelSum(*count5), pointCount(points1->tree()));
801 }
802 }
803 1 }
804