GCC Code Coverage Report

Directory: ./
File: openvdb/openvdb/unittest/TestCpt.cc
Date: 2022-07-25 17:40:05
Exec Total Coverage
Lines: 238 238 100.0%
Functions: 7 7 100.0%
Branches: 350 2414 14.5%
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 #include <openvdb/math/Stencils.h> // for old GradientStencil
8
9 #include <gtest/gtest.h>
10
11 #include <sstream>
12
13 #include "util.h" // for unittest_util::makeSphere()
14
15 #define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \
16 EXPECT_NEAR((expected), (actual), /*tolerance=*/0.0);
17
18 5 class TestCpt: public ::testing::Test
19 {
20 public:
21 5 void SetUp() override { openvdb::initialize(); }
22 5 void TearDown() override { openvdb::uninitialize(); }
23 };
24
25
26
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 1 TEST_F(TestCpt, testCpt)
27 {
28 using namespace openvdb;
29
30 typedef FloatGrid::ConstAccessor AccessorType;
31
32 { // unit voxel size tests
33
34 1 FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0);
35 const FloatTree& tree = grid->tree();
36
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 1 EXPECT_TRUE(tree.empty());
37
38 const Coord dim(64,64,64);
39 const Vec3f center(35.0, 30.0f, 40.0f);
40 const float radius=0;//point at {35,30,40}
41
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 1 unittest_util::makeSphere<FloatGrid>(
42 dim, center, radius, *grid, unittest_util::SPHERE_DENSE);
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 1 EXPECT_TRUE(!tree.empty());
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 1 EXPECT_EQ(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount()));
45
46
47 AccessorType inAccessor = grid->getConstAccessor();
48 // this uses the gradient. Only test for a few maps, since the gradient is
49 // tested elsewhere
50
51 Coord xyz(35,30,30);
52
53 math::TranslationMap translate;
54 // Note the CPT::result is in continuous index space
55
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 1 Vec3f P = math::CPT<math::TranslationMap, math::CD_2ND>::result(translate, inAccessor, xyz);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]);
59
60 // CPT_RANGE::result is in the range of the map
61 // CPT_RANGE::result = map.applyMap(CPT::result())
62 // for our tests, the map is an identity so in this special case
63 // the two versions of the Cpt should exactly agree
64
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 1 P = math::CPT_RANGE<math::TranslationMap, math::CD_2ND>::result(translate, inAccessor, xyz);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]);
68
69 xyz.reset(35,30,35);
70
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 1 P = math::CPT<math::TranslationMap, math::CD_2ND>::result(translate, inAccessor, xyz);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]);
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 1 P = math::CPT_RANGE<math::TranslationMap, math::CD_2ND>::result(translate, inAccessor, xyz);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]);
81 }
82 {
83 // NON-UNIT VOXEL SIZE
84
85 double voxel_size = 0.5;
86
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 1 FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0);
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 2 grid->setTransform(math::Transform::createLinearTransform(voxel_size));
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 1 EXPECT_TRUE(grid->empty());
89 AccessorType inAccessor = grid->getConstAccessor();
90
91 const openvdb::Coord dim(32,32,32);
92 const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space
93 const float radius=10;//i.e. (16,8,10) and (6,8,0) are on the sphere
94
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 1 unittest_util::makeSphere<FloatGrid>(
95 dim, center, radius, *grid, unittest_util::SPHERE_DENSE);
96
97
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 1 EXPECT_TRUE(!grid->empty());
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 1 EXPECT_EQ(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount()));
99
100 Coord xyz(20,16,20);//i.e. (10,8,10) in world space or 6 world units inside the sphere
101
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 1 math::AffineMap affine(voxel_size*math::Mat3d::identity());
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 1 Vec3f P = math::CPT<math::AffineMap, math::CD_2ND>::result(affine, inAccessor, xyz);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(32,P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(20,P[2]);
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 1 P = math::CPT_RANGE<math::AffineMap, math::CD_2ND>::result(affine, inAccessor, xyz);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(10,P[2]);
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114 xyz.reset(12,16,10);
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 1 P = math::CPT<math::AffineMap, math::CD_2ND>::result(affine, inAccessor, xyz);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(12,P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]);
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 1 P = math::CPT_RANGE<math::AffineMap, math::CD_2ND>::result(affine, inAccessor, xyz);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(6,P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]);
126
127 }
128 {
129 // NON-UNIFORM SCALING
130 Vec3d voxel_sizes(0.5, 1, 0.5);
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 1 math::MapBase::Ptr base_map( new math::ScaleMap(voxel_sizes));
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 1 FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0);
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 3 grid->setTransform(math::Transform::Ptr(new math::Transform(base_map)));
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 1 EXPECT_TRUE(grid->empty());
136 AccessorType inAccessor = grid->getConstAccessor();
137
138
139 const openvdb::Coord dim(32,32,32);
140 const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space
141 const float radius=10;//i.e. (16,8,10) and (6,8,0) are on the sphere
142
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143 dim, center, radius, *grid, unittest_util::SPHERE_DENSE);
144
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 1 Coord ijk = grid->transform().worldToIndexNodeCentered(Vec3d(10,8,10));
149
150 //Coord xyz(20,16,20);//i.e. (10,8,10) in world space or 6 world units inside the sphere
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152 Vec3f P;
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157
158
159 // world space result
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 1 EXPECT_NEAR(10,P[2], 0.02);
164
165 //xyz.reset(12,16,10);
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179 }
180
181 1 }
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183
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 1 TEST_F(TestCpt, testCptStencil)
185 {
186 using namespace openvdb;
187
188 { // UNIT VOXEL TEST
189
190 1 FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0);
191 const FloatTree& tree = grid->tree();
192
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 1 EXPECT_TRUE(tree.empty());
193
194 const openvdb::Coord dim(64,64,64);
195 const openvdb::Vec3f center(35.0f ,30.0f, 40.0f);
196 const float radius=0.0f;
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198 dim, center, radius, *grid, unittest_util::SPHERE_DENSE);
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 1 EXPECT_EQ(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount()));
201
202 // this uses the gradient. Only test for a few maps, since the gradient is
203 // tested elsewhere
204
205 math::SevenPointStencil<FloatGrid> sevenpt(*grid);
206 math::SecondOrderDenseStencil<FloatGrid> dense_2nd(*grid);
207
208
209 Coord xyz(35,30,30);
210
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214
215 math::TranslationMap translate;
216 // Note the CPT::result is in continuous index space
217 1 Vec3f P = math::CPT<math::TranslationMap, math::CD_2ND>::result(translate, sevenpt);
218
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]);
221
222 // CPT_RANGE::result_stencil is in the range of the map
223 // CPT_RANGE::result_stencil = map.applyMap(CPT::result_stencil())
224 // for our tests, the map is an identity so in this special case
225 // the two versions of the Cpt should exactly agree
226 1 P = math::CPT_RANGE<math::TranslationMap, math::CD_2ND>::result(translate, sevenpt);
227
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230
231 xyz.reset(35,30,35);
232
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237
238 1 P = math::CPT<math::TranslationMap, math::CD_2ND>::result(translate, sevenpt);
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243
244 1 P = math::CPT_RANGE<math::TranslationMap, math::CD_2ND>::result(translate, sevenpt);
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249
250 xyz.reset(35,30,30);
251
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254
255 1 math::AffineMap affine;
256
257 1 P = math::CPT<math::AffineMap, math::CD_2ND>::result(affine, dense_2nd);
258
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261
262
263 1 P = math::CPT_RANGE<math::AffineMap, math::CD_2ND>::result(affine, dense_2nd);
264
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267
268 xyz.reset(35,30,35);
269
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 1 EXPECT_TRUE(tree.isValueOn(xyz));
274
275 1 P = math::CPT<math::AffineMap, math::CD_2ND>::result(affine, dense_2nd);
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 1 EXPECT_TRUE(tree.isValueOn(xyz));
281
282 1 P = math::CPT_RANGE<math::AffineMap, math::CD_2ND>::result(affine, dense_2nd);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]);
286
287 }
288 {
289 // NON-UNIT VOXEL SIZE
290
291 double voxel_size = 0.5;
292
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 1 FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0);
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 2 grid->setTransform(math::Transform::createLinearTransform(voxel_size));
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 1 EXPECT_TRUE(grid->empty());
295
296 const openvdb::Coord dim(32,32,32);
297 const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space
298 const float radius=10;//i.e. (16,8,10) and (6,8,0) are on the sphere
299
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 1 unittest_util::makeSphere<FloatGrid>(
300 dim, center, radius, *grid, unittest_util::SPHERE_DENSE);
301
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 1 EXPECT_TRUE(!grid->empty());
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 1 EXPECT_EQ(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount()));
304
305
306 math::SecondOrderDenseStencil<FloatGrid> dense_2nd(*grid);
307
308
309 Coord xyz(20,16,20);//i.e. (10,8,10) in world space or 6 world units inside the sphere
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 1 math::AffineMap affine(voxel_size*math::Mat3d::identity());
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 1 dense_2nd.moveTo(xyz);
312
313 1 Vec3f P = math::CPT<math::AffineMap, math::CD_2ND>::result(affine, dense_2nd);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(32,P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(20,P[2]);
317
318
319 1 P = math::CPT_RANGE<math::AffineMap, math::CD_2ND>::result(affine, dense_2nd);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(10,P[2]);
323
324 xyz.reset(12,16,10);
325
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326
327 1 P = math::CPT<math::AffineMap, math::CD_2ND>::result(affine, dense_2nd);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(12,P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]);
331
332
333 1 P = math::CPT_RANGE<math::AffineMap, math::CD_2ND>::result(affine, dense_2nd);
334
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(6,P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]);
337
338 }
339 {
340 // NON-UNIFORM SCALING
341 Vec3d voxel_sizes(0.5, 1, 0.5);
342
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 1 math::MapBase::Ptr base_map( new math::ScaleMap(voxel_sizes));
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 1 FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0);
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 3 grid->setTransform(math::Transform::Ptr(new math::Transform(base_map)));
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 1 EXPECT_TRUE(grid->empty());
347
348
349 const openvdb::Coord dim(32,32,32);
350 const openvdb::Vec3f center(6.0f, 8.0f, 10.0f);//i.e. (12,16,20) in index space
351 const float radius=10;//i.e. (16,8,10) and (6,8,0) are on the sphere
352
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 1 unittest_util::makeSphere<FloatGrid>(
353 dim, center, radius, *grid, unittest_util::SPHERE_DENSE);
354
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 1 EXPECT_TRUE(!grid->empty());
356
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 1 EXPECT_EQ(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount()));
357
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 1 Coord ijk = grid->transform().worldToIndexNodeCentered(Vec3d(10,8,10));
359 math::SevenPointStencil<FloatGrid> sevenpt(*grid);
360
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 1 sevenpt.moveTo(ijk);
362
363 //Coord xyz(20,16,20);//i.e. (10,8,10) in world space or 6 world units inside the sphere
364
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 1 math::ScaleMap scale(voxel_sizes);
365 Vec3f P;
366 1 P = math::CPT<math::ScaleMap, math::CD_2ND>::result(scale, sevenpt);
367
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(32,P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(20,P[2]);
370
371
372 // world space result
373 1 P = math::CPT_RANGE<math::ScaleMap, math::CD_2ND>::result(scale, sevenpt);
374
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 1 EXPECT_NEAR(16,P[0], 0.02 );
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376
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377
378 //xyz.reset(12,16,10);
379
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 1 ijk = grid->transform().worldToIndexNodeCentered(Vec3d(6,8,5));
380
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381 1 P = math::CPT<math::ScaleMap, math::CD_2ND>::result(scale, sevenpt);
382
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(12,P[0]);
383
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(8,P[1]);
384
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(0,P[2]);
385
386
387 1 P = math::CPT_RANGE<math::ScaleMap, math::CD_2ND>::result(scale, sevenpt);
388
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 1 EXPECT_NEAR(6,P[0], 0.02);
389
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 1 EXPECT_NEAR(8,P[1], 0.02);
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 1 EXPECT_NEAR(0,P[2], 0.02);
391
392 }
393
394
395 1 }
396
397
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 1 TEST_F(TestCpt, testCptTool)
398 {
399 using namespace openvdb;
400
401 1 FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0);
402 const FloatTree& tree = grid->tree();
403
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 1 EXPECT_TRUE(tree.empty());
404
405 const openvdb::Coord dim(64,64,64);
406 const openvdb::Vec3f center(35.0f, 30.0f, 40.0f);
407 const float radius=0;//point at {35,30,40}
408
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 1 unittest_util::makeSphere<FloatGrid>(dim, center, radius, *grid, unittest_util::SPHERE_DENSE);
409
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 1 EXPECT_TRUE(!tree.empty());
410
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 1 EXPECT_EQ(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount()));
411
412 // run the tool
413 typedef openvdb::tools::Cpt<FloatGrid> FloatCpt;
414 FloatCpt cpt(*grid);
415 FloatCpt::OutGridType::Ptr cptGrid =
416
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 1 cpt.process(true/*threaded*/, false/*use world transform*/);
417
418 FloatCpt::OutGridType::ConstAccessor cptAccessor = cptGrid->getConstAccessor();
419
420 Coord xyz(35,30,30);
421
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 1 EXPECT_TRUE(tree.isValueOn(xyz));
422
423
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 1 Vec3f P = cptAccessor.getValue(xyz);
424
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]);
425
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]);
426
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]);
427
428 xyz.reset(35,30,35);
429
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 1 EXPECT_TRUE(tree.isValueOn(xyz));
430
431
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 1 P = cptAccessor.getValue(xyz);
432
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[0],P[0]);
433
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[1],P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[2],P[2]);
435 1 }
436
437
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 1 TEST_F(TestCpt, testCptMaskedTool)
438 {
439 using namespace openvdb;
440
441 1 FloatGrid::Ptr grid = FloatGrid::create(/*background=*/5.0);
442 const FloatTree& tree = grid->tree();
443
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 1 EXPECT_TRUE(tree.empty());
444
445 const openvdb::Coord dim(64,64,64);
446 const openvdb::Vec3f center(35.0f, 30.0f, 40.0f);
447 const float radius=0;//point at {35,30,40}
448
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 1 unittest_util::makeSphere<FloatGrid>(dim, center, radius, *grid, unittest_util::SPHERE_DENSE);
449
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 1 EXPECT_TRUE(!tree.empty());
450
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 1 EXPECT_EQ(dim[0]*dim[1]*dim[2], int(tree.activeVoxelCount()));
451
452 1 const openvdb::CoordBBox maskbbox(openvdb::Coord(35, 30, 30), openvdb::Coord(41, 41, 41));
453
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 1 BoolGrid::Ptr maskGrid = BoolGrid::create(false);
454
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 2 maskGrid->fill(maskbbox, true/*value*/, true/*activate*/);
455
456 // run the tool
457 //typedef openvdb::tools::Cpt<FloatGrid> FloatCpt;//fails because MaskT defaults to MaskGrid
458 typedef openvdb::tools::Cpt<FloatGrid, BoolGrid> FloatCpt;
459 FloatCpt cpt(*grid, *maskGrid);
460 FloatCpt::OutGridType::Ptr cptGrid =
461
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 1 cpt.process(true/*threaded*/, false/*use world transform*/);
462
463 FloatCpt::OutGridType::ConstAccessor cptAccessor = cptGrid->getConstAccessor();
464
465 // inside the masked region
466 Coord xyz(35,30,30);
467
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 1 EXPECT_TRUE(tree.isValueOn(xyz));
468
469
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 1 Vec3f P = cptAccessor.getValue(xyz);
470
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[0], P[0]);
471
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[1], P[1]);
472
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(center[2], P[2]);
473
474 // outside the masked region
475 xyz.reset(42,42,42);
476
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 1 EXPECT_TRUE(!cptAccessor.isValueOn(xyz));
477 1 }
478
479
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 1 TEST_F(TestCpt, testOldStyleStencils)
480 {
481 using namespace openvdb;
482
483 {// test of level set to sphere at (6,8,10) with R=10 and dx=0.5
484
485
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 1 FloatGrid::Ptr grid = FloatGrid::create(/*backgroundValue=*/5.0);
486
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 2 grid->setTransform(math::Transform::createLinearTransform(/*voxel size=*/0.5));
487
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 1 EXPECT_TRUE(grid->empty());
488
489 const openvdb::Coord dim(32,32,32);
490 const openvdb::Vec3f center(6.0f,8.0f,10.0f);//i.e. (12,16,20) in index space
491 const float radius=10;//i.e. (16,8,10) and (6,8,0) are on the sphere
492
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 1 unittest_util::makeSphere<FloatGrid>(
493 dim, center, radius, *grid, unittest_util::SPHERE_DENSE);
494
495
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 1 EXPECT_TRUE(!grid->empty());
496
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 1 EXPECT_EQ(dim[0]*dim[1]*dim[2], int(grid->activeVoxelCount()));
497
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 1 math::GradStencil<FloatGrid> gs(*grid);
498
499 Coord xyz(20,16,20);//i.e. (10,8,10) in world space or 6 world units inside the sphere
500
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 1 gs.moveTo(xyz);
501 1 float dist = gs.getValue();//signed closest distance to sphere in world coordinates
502 1 Vec3f P = gs.cpt();//closes point to sphere in index space
503
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(dist,-6);
504
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(32,P[0]);
505
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(20,P[2]);
507
508 xyz.reset(12,16,10);//i.e. (6,8,5) in world space or 15 world units inside the sphere
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 1 gs.moveTo(xyz);
510 1 dist = gs.getValue();//signed closest distance to sphere in world coordinates
511 1 P = gs.cpt();//closes point to sphere in index space
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(-5,dist);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(12,P[0]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL(16,P[1]);
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 1 ASSERT_DOUBLES_EXACTLY_EQUAL( 0,P[2]);
516 }
517 1 }
518