GCC Code Coverage Report

Directory: ./
File: openvdb/openvdb/unittest/TestCurl.cc
Date: 2022-07-25 17:40:05
Exec Total Coverage
Lines: 295 295 100.0%
Functions: 8 8 100.0%
Branches: 468 2732 17.1%
Line Branch Exec Source
1 // Copyright Contributors to the OpenVDB Project
2 // SPDX-License-Identifier: MPL-2.0
3
4 #include <openvdb/Types.h>
5 #include <openvdb/openvdb.h>
6 #include <openvdb/tools/GridOperators.h>
7
8 #include <gtest/gtest.h>
9
10 #define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \
11 EXPECT_NEAR((expected), (actual), /*tolerance=*/1e-6);
12
13 namespace {
14 const int GRID_DIM = 10;
15 }
16
17
18 6 class TestCurl: public ::testing::Test
19 {
20 public:
21 6 void SetUp() override { openvdb::initialize(); }
22 6 void TearDown() override { openvdb::uninitialize(); }
23 };
24
25
26
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 1 TEST_F(TestCurl, testCurlTool)
27 {
28 using namespace openvdb;
29
30 1 VectorGrid::Ptr inGrid = VectorGrid::create();
31 const VectorTree& inTree = inGrid->tree();
32
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 1 EXPECT_TRUE(inTree.empty());
33
34 VectorGrid::Accessor inAccessor = inGrid->getAccessor();
35 int dim = GRID_DIM;
36
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 8000 inAccessor.setValue(Coord(x,y,z),
40
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 8000 VectorTree::ValueType(float(y), float(-x), 0.f));
41 }
42 }
43 }
44
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 1 EXPECT_TRUE(!inTree.empty());
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 1 EXPECT_EQ(math::Pow3(2*dim), int(inTree.activeVoxelCount()));
46
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 1 VectorGrid::Ptr curl_grid = tools::curl(*inGrid);
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 1 EXPECT_EQ(math::Pow3(2*dim), int(curl_grid->activeVoxelCount()));
49
50 VectorGrid::ConstAccessor curlAccessor = curl_grid->getConstAccessor();
51 --dim;//ignore boundary curl vectors
52
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54
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55 Coord xyz(x,y,z);
56
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 5832 VectorTree::ValueType v = inAccessor.getValue(xyz);
57 //std::cout << "vec(" << xyz << ")=" << v << std::endl;
58
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( y,v[0]);
59
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-x,v[1]);
60
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[2]);
61
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 5832 v = curlAccessor.getValue(xyz);
62 //std::cout << "curl(" << xyz << ")=" << v << std::endl;
63
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
66 }
67 }
68 }
69 1 }
70
71
72
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 1 TEST_F(TestCurl, testCurlMaskedTool)
73 {
74 using namespace openvdb;
75
76 1 VectorGrid::Ptr inGrid = VectorGrid::create();
77 const VectorTree& inTree = inGrid->tree();
78
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 1 EXPECT_TRUE(inTree.empty());
79
80 VectorGrid::Accessor inAccessor = inGrid->getAccessor();
81 int dim = GRID_DIM;
82
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86
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 8000 VectorTree::ValueType(float(y), float(-x), 0.f));
87 }
88 }
89 }
90
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 1 EXPECT_TRUE(!inTree.empty());
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 1 EXPECT_EQ(math::Pow3(2*dim), int(inTree.activeVoxelCount()));
92
93 1 openvdb::CoordBBox maskBBox(openvdb::Coord(0), openvdb::Coord(dim));
94
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 1 BoolGrid::Ptr maskGrid = BoolGrid::create(false);
95
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 2 maskGrid->fill(maskBBox, true /*value*/, true /*activate*/);
96
97 1 openvdb::CoordBBox testBBox(openvdb::Coord(-dim+1), openvdb::Coord(dim));
98
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 1 BoolGrid::Ptr testGrid = BoolGrid::create(false);
99
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 2 testGrid->fill(testBBox, true, true);
100
101 testGrid->topologyIntersection(*maskGrid);
102
103
104
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 1 VectorGrid::Ptr curl_grid = tools::curl(*inGrid, *maskGrid);
105
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 1 EXPECT_EQ(math::Pow3(dim), int(curl_grid->activeVoxelCount()));
106
107 VectorGrid::ConstAccessor curlAccessor = curl_grid->getConstAccessor();
108 --dim;//ignore boundary curl vectors
109
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112 Coord xyz(x,y,z);
113
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 5832 VectorTree::ValueType v = inAccessor.getValue(xyz);
114
115
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( y,v[0]);
116
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-x,v[1]);
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[2]);
118
119
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 5832 v = curlAccessor.getValue(xyz);
120 if (maskBBox.isInside(xyz)) {
121
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 729 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
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 729 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
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 729 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
124 } else {
125 // get the background value outside masked region
126
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 5103 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[2]);
129 }
130 }
131 }
132 }
133 1 }
134
135
136
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 1 TEST_F(TestCurl, testISCurl)
137 {
138 using namespace openvdb;
139
140 1 VectorGrid::Ptr inGrid = VectorGrid::create();
141 const VectorTree& inTree = inGrid->tree();
142
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 1 EXPECT_TRUE(inTree.empty());
143
144 VectorGrid::Accessor inAccessor = inGrid->getAccessor();
145 int dim = GRID_DIM;
146
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147
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150
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 8000 VectorTree::ValueType(float(y), float(-x), 0.f));
151 }
152 }
153 }
154
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 1 EXPECT_TRUE(!inTree.empty());
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 1 EXPECT_EQ(math::Pow3(2*dim), int(inTree.activeVoxelCount()));
156
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 1 VectorGrid::Ptr curl_grid = tools::curl(*inGrid);
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 1 EXPECT_EQ(math::Pow3(2*dim), int(curl_grid->activeVoxelCount()));
159
160 --dim;//ignore boundary curl vectors
161 // test unit space operators
162 VectorGrid::ConstAccessor inConstAccessor = inGrid->getConstAccessor();
163
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 19 for (int x = -dim; x<dim; ++x) {
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166 Coord xyz(x,y,z);
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186 }
187 }
188 }
189
190 --dim;//ignore boundary curl vectors
191
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194 Coord xyz(x,y,z);
195
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215 }
216 }
217 }
218
219 --dim;//ignore boundary curl vectors
220
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222
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223 Coord xyz(x,y,z);
224
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225
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244 }
245 }
246 }
247 1 }
248
249
250
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 1 TEST_F(TestCurl, testISCurlStencil)
251 {
252 using namespace openvdb;
253
254 1 VectorGrid::Ptr inGrid = VectorGrid::create();
255 const VectorTree& inTree = inGrid->tree();
256
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 1 EXPECT_TRUE(inTree.empty());
257
258 VectorGrid::Accessor inAccessor = inGrid->getAccessor();
259 int dim = GRID_DIM;
260
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 21 for (int x = -dim; x<dim; ++x) {
261
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 420 for (int y = -dim; y<dim; ++y) {
262
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 8400 for (int z = -dim; z<dim; ++z) {
263
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 8000 inAccessor.setValue(Coord(x,y,z),
264
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 8000 VectorTree::ValueType(float(y), float(-x), 0.f));
265 }
266 }
267 }
268
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 1 EXPECT_TRUE(!inTree.empty());
269
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 1 EXPECT_EQ(math::Pow3(2*dim), int(inTree.activeVoxelCount()));
270
271
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 1 VectorGrid::Ptr curl_grid = tools::curl(*inGrid);
272
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 1 EXPECT_EQ(math::Pow3(2*dim), int(curl_grid->activeVoxelCount()));
273
274 math::SevenPointStencil<VectorGrid> sevenpt(*inGrid);
275 math::ThirteenPointStencil<VectorGrid> thirteenpt(*inGrid);
276 math::NineteenPointStencil<VectorGrid> nineteenpt(*inGrid);
277
278 // test unit space operators
279
280 --dim;//ignore boundary curl vectors
281
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 19 for (int x = -dim; x<dim; ++x) {
282
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 342 for (int y = -dim; y<dim; ++y) {
283
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 6156 for (int z = -dim; z<dim; ++z) {
284 Coord xyz(x,y,z);
285
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 5832 sevenpt.moveTo(xyz);
286
287
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 5832 VectorTree::ValueType v = inAccessor.getValue(xyz);
288
289
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( y,v[0]);
290
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-x,v[1]);
291
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[2]);
292
293 5832 v = math::ISCurl<math::CD_2ND>::result(sevenpt);
294
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
296
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
297
298 5832 v = math::ISCurl<math::FD_1ST>::result(sevenpt);
299
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
300
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
301
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
302
303 5832 v = math::ISCurl<math::BD_1ST>::result(sevenpt);
304
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
305
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
306
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
307 }
308 }
309 }
310
311 --dim;//ignore boundary curl vectors
312
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 17 for (int x = -dim; x<dim; ++x) {
313
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 272 for (int y = -dim; y<dim; ++y) {
314
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 4352 for (int z = -dim; z<dim; ++z) {
315 Coord xyz(x,y,z);
316
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 4096 thirteenpt.moveTo(xyz);
317
318
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 4096 VectorTree::ValueType v = inAccessor.getValue(xyz);
319
320
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 4096 ASSERT_DOUBLES_EXACTLY_EQUAL( y,v[0]);
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 4096 ASSERT_DOUBLES_EXACTLY_EQUAL(-x,v[1]);
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 4096 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[2]);
323 4096 v = math::ISCurl<math::CD_4TH>::result(thirteenpt);
324
325
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 4096 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
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 4096 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
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 4096 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
328
329
330 4096 v = math::ISCurl<math::FD_2ND>::result(thirteenpt);
331
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 4096 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
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 4096 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
334
335 4096 v = math::ISCurl<math::BD_2ND>::result(thirteenpt);
336
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 4096 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
339 }
340 }
341 }
342
343
344 --dim;//ignore boundary curl vectors
345
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346
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 210 for (int y = -dim; y<dim; ++y) {
347
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 2940 for (int z = -dim; z<dim; ++z) {
348 Coord xyz(x,y,z);
349
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350
351
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 2744 VectorTree::ValueType v = inAccessor.getValue(xyz);
352
353
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 2744 ASSERT_DOUBLES_EXACTLY_EQUAL( y,v[0]);
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 2744 ASSERT_DOUBLES_EXACTLY_EQUAL(-x,v[1]);
355
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 2744 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[2]);
356 2744 v = math::ISCurl<math::CD_6TH>::result(nineteenpt);
357
358
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 2744 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
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 2744 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
361
362 2744 v = math::ISCurl<math::FD_3RD>::result(nineteenpt);
363
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 2744 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
364
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365
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 2744 EXPECT_NEAR(-2,v[2], /*tolerance=*/0.00001);
366
367 2744 v = math::ISCurl<math::BD_3RD>::result(nineteenpt);
368
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 2744 EXPECT_NEAR(-2,v[2], /*tolerance=*/0.00001);
371 }
372 }
373 }
374 1 }
375
376
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 1 TEST_F(TestCurl, testWSCurl)
377 {
378 using namespace openvdb;
379
380 1 VectorGrid::Ptr inGrid = VectorGrid::create();
381 const VectorTree& inTree = inGrid->tree();
382
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 1 EXPECT_TRUE(inTree.empty());
383
384 VectorGrid::Accessor inAccessor = inGrid->getAccessor();
385 int dim = GRID_DIM;
386
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387
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388
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389
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 8000 inAccessor.setValue(Coord(x,y,z),
390
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 8000 VectorTree::ValueType(float(y), float(-x), 0.f));
391 }
392 }
393 }
394
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 1 EXPECT_TRUE(!inTree.empty());
395
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 1 EXPECT_EQ(math::Pow3(2*dim), int(inTree.activeVoxelCount()));
396
397
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 1 VectorGrid::Ptr curl_grid = tools::curl(*inGrid);
398
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 1 EXPECT_EQ(math::Pow3(2*dim), int(curl_grid->activeVoxelCount()));
399
400 // test with a map
401 1 math::AffineMap map;
402 math::UniformScaleMap uniform_map;
403
404
405 // test unit space operators
406
407 --dim;//ignore boundary curl vectors
408
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 19 for (int x = -dim; x<dim; ++x) {
409
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 342 for (int y = -dim; y<dim; ++y) {
410
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 6156 for (int z = -dim; z<dim; ++z) {
411 Coord xyz(x,y,z);
412
413
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 5832 VectorTree::ValueType v = inAccessor.getValue(xyz);
414
415
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( y,v[0]);
416
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-x,v[1]);
417
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[2]);
418
419
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 5832 v = math::Curl<math::AffineMap, math::CD_2ND>::result(map, inAccessor, xyz);
420
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
422
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
423
424
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 5832 v = math::Curl<math::AffineMap, math::FD_1ST>::result(map, inAccessor, xyz);
425
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
426
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
427
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
428
429
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 5832 v = math::Curl<math::AffineMap, math::BD_1ST>::result(map, inAccessor, xyz);
430
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
431
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
432
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
433
434 v = math::Curl<math::UniformScaleMap, math::CD_2ND>::result(
435
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 5832 uniform_map, inAccessor, xyz);
436
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
437
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
438
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
439
440 v = math::Curl<math::UniformScaleMap, math::FD_1ST>::result(
441
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442
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443
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
444
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
445
446 v = math::Curl<math::UniformScaleMap, math::BD_1ST>::result(
447
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 5832 uniform_map, inAccessor, xyz);
448
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
450
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
451 }
452 }
453 }
454 1 }
455
456
457
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 1 TEST_F(TestCurl, testWSCurlStencil)
458 {
459 using namespace openvdb;
460
461 1 VectorGrid::Ptr inGrid = VectorGrid::create();
462 const VectorTree& inTree = inGrid->tree();
463
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 1 EXPECT_TRUE(inTree.empty());
464
465 VectorGrid::Accessor inAccessor = inGrid->getAccessor();
466 int dim = GRID_DIM;
467
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 21 for (int x = -dim; x<dim; ++x) {
468
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469
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470
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 8000 inAccessor.setValue(Coord(x,y,z),
471
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 8000 VectorTree::ValueType(float(y), float(-x), 0.f));
472 }
473 }
474 }
475
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 1 EXPECT_TRUE(!inTree.empty());
476
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 1 EXPECT_EQ(math::Pow3(2*dim), int(inTree.activeVoxelCount()));
477
478
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 1 VectorGrid::Ptr curl_grid = tools::curl(*inGrid);
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 1 EXPECT_EQ(math::Pow3(2*dim), int(curl_grid->activeVoxelCount()));
480
481 // test with a map
482 1 math::AffineMap map;
483 math::UniformScaleMap uniform_map;
484
485 math::SevenPointStencil<VectorGrid> sevenpt(*inGrid);
486 math::SecondOrderDenseStencil<VectorGrid> dense_2ndOrder(*inGrid);
487
488
489 // test unit space operators
490
491 --dim;//ignore boundary curl vectors
492
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 19 for (int x = -dim; x<dim; ++x) {
493
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 342 for (int y = -dim; y<dim; ++y) {
494
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 6156 for (int z = -dim; z<dim; ++z) {
495 Coord xyz(x,y,z);
496
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 5832 sevenpt.moveTo(xyz);
497
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 5832 dense_2ndOrder.moveTo(xyz);
498
499
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 5832 VectorTree::ValueType v = inAccessor.getValue(xyz);
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501
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( y,v[0]);
502
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-x,v[1]);
503
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[2]);
504
505 5832 v = math::Curl<math::AffineMap, math::CD_2ND>::result(map, dense_2ndOrder);
506
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
507
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
508
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
509
510 5832 v = math::Curl<math::AffineMap, math::FD_1ST>::result(map, dense_2ndOrder);
511
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
512
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
513
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
514
515 5832 v = math::Curl<math::AffineMap, math::BD_1ST>::result(map, dense_2ndOrder);
516
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
517
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
518
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
519
520 5832 v = math::Curl<math::UniformScaleMap, math::CD_2ND>::result(uniform_map, sevenpt);
521
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
522
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
524
525 5832 v = math::Curl<math::UniformScaleMap, math::FD_1ST>::result(uniform_map, sevenpt);
526
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
527
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
529
530 5832 v = math::Curl<math::UniformScaleMap, math::BD_1ST>::result(uniform_map, sevenpt);
531
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[0]);
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,v[1]);
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 5832 ASSERT_DOUBLES_EXACTLY_EQUAL(-2,v[2]);
534 }
535 }
536 }
537 1 }
538