| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // Copyright Contributors to the OpenVDB Project | ||
| 2 | // SPDX-License-Identifier: MPL-2.0 | ||
| 3 | |||
| 4 | #include <openvdb/Exceptions.h> | ||
| 5 | #include <openvdb/Types.h> | ||
| 6 | #include <openvdb/openvdb.h> | ||
| 7 | #include <openvdb/util/CpuTimer.h> | ||
| 8 | #include <openvdb/tools/LevelSetSphere.h> | ||
| 9 | #include <openvdb/tools/FindActiveValues.h> | ||
| 10 | |||
| 11 | #include <gtest/gtest.h> | ||
| 12 | |||
| 13 | #include "util.h" // for unittest_util::makeSphere() | ||
| 14 | |||
| 15 | #include <cstdio> // for remove() | ||
| 16 | #include <fstream> | ||
| 17 | #include <sstream> | ||
| 18 | |||
| 19 | #define ASSERT_DOUBLES_EXACTLY_EQUAL(expected, actual) \ | ||
| 20 | EXPECT_NEAR((expected), (actual), /*tolerance=*/0.0); | ||
| 21 | |||
| 22 | |||
| 23 | 6 | class TestFindActiveValues: public ::testing::Test | |
| 24 | { | ||
| 25 | public: | ||
| 26 | 6 | void SetUp() override { openvdb::initialize(); } | |
| 27 | 6 | void TearDown() override { openvdb::uninitialize(); } | |
| 28 | }; | ||
| 29 | |||
| 30 | |||
| 31 |
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1 | TEST_F(TestFindActiveValues, testBasic) |
| 32 | { | ||
| 33 | 1 | const float background = 5.0f; | |
| 34 | 2 | openvdb::FloatTree tree(background); | |
| 35 | const openvdb::Coord min(-1,-2,30), max(20,30,55); | ||
| 36 | const openvdb::CoordBBox bbox(min[0], min[1], min[2], | ||
| 37 | max[0], max[1], max[2]); | ||
| 38 | |||
| 39 |
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1 | EXPECT_TRUE( openvdb::tools::noActiveValues(tree, bbox)); |
| 40 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveValues(tree, bbox)); |
| 41 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveVoxels(tree, bbox)); |
| 42 | |||
| 43 |
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1 | tree.setValue(min.offsetBy(-1), 1.0f); |
| 44 |
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1 | EXPECT_TRUE( openvdb::tools::noActiveValues(tree, bbox)); |
| 45 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveValues(tree, bbox)); |
| 46 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveVoxels(tree, bbox)); |
| 47 | |||
| 48 |
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1 | tree.setValue(max.offsetBy( 1), 1.0f); |
| 49 |
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1 | EXPECT_TRUE( openvdb::tools::noActiveValues(tree, bbox)); |
| 50 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveValues(tree, bbox)); |
| 51 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveVoxels(tree, bbox)); |
| 52 | |||
| 53 |
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1 | tree.setValue(min, 1.0f); |
| 54 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveValues(tree, bbox)); |
| 55 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveVoxels(tree, bbox)); |
| 56 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveTiles(tree, bbox)); |
| 57 | |||
| 58 |
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1 | tree.setValue(max, 1.0f); |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveValues(tree, bbox)); |
| 60 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveVoxels(tree, bbox)); |
| 61 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveTiles(tree, bbox)); |
| 62 |
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1 | auto tiles = openvdb::tools::activeTiles(tree, bbox); |
| 63 |
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1 | EXPECT_TRUE( tiles.size() == 0u ); |
| 64 | |||
| 65 |
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1 | tree.sparseFill(bbox, 1.0f); |
| 66 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveValues(tree, bbox)); |
| 67 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveVoxels(tree, bbox)); |
| 68 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveTiles( tree, bbox)); |
| 69 |
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2 | tiles = openvdb::tools::activeTiles(tree, bbox); |
| 70 |
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1 | EXPECT_TRUE( tiles.size() != 0u ); |
| 71 |
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19 | for (auto &t : tiles) { |
| 72 |
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18 | EXPECT_TRUE( t.level == 1); |
| 73 |
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18 | EXPECT_TRUE( t.bbox.volume() == openvdb::math::Pow3(uint64_t(8)) ); |
| 74 | //std::cerr << "bbox = " << t.bbox << ", level = " << t.level << std::endl; | ||
| 75 | } | ||
| 76 | |||
| 77 |
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1 | tree.denseFill(bbox, 1.0f); |
| 78 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveValues(tree, bbox)); |
| 79 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveVoxels(tree, bbox)); |
| 80 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveTiles(tree, bbox)); |
| 81 |
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2 | tiles = openvdb::tools::activeTiles(tree, bbox); |
| 82 |
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1 | EXPECT_TRUE( tiles.size() == 0u ); |
| 83 | 1 | } | |
| 84 | |||
| 85 |
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2 | TEST_F(TestFindActiveValues, testSphere1) |
| 86 | { | ||
| 87 | const openvdb::Vec3f center(0.5f, 0.5f, 0.5f); | ||
| 88 | const float radius = 0.3f; | ||
| 89 | const int dim = 100, half_width = 3; | ||
| 90 | const float voxel_size = 1.0f/dim; | ||
| 91 | |||
| 92 |
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1 | openvdb::FloatGrid::Ptr grid = openvdb::FloatGrid::create(/*background=*/half_width*voxel_size); |
| 93 | const openvdb::FloatTree& tree = grid->tree(); | ||
| 94 |
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2 | grid->setTransform(openvdb::math::Transform::createLinearTransform(/*voxel size=*/voxel_size)); |
| 95 |
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1 | unittest_util::makeSphere<openvdb::FloatGrid>( |
| 96 |
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1 | openvdb::Coord(dim), center, radius, *grid, unittest_util::SPHERE_SPARSE_NARROW_BAND); |
| 97 | |||
| 98 | const int c = int(0.5f/voxel_size); | ||
| 99 | 1 | const openvdb::CoordBBox a(openvdb::Coord(c), openvdb::Coord(c+ 8)); | |
| 100 |
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1 | EXPECT_TRUE(!tree.isValueOn(openvdb::Coord(c))); |
| 101 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveValues(tree, a)); |
| 102 | |||
| 103 | const openvdb::Coord d(c + int(radius/voxel_size), c, c); | ||
| 104 |
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1 | EXPECT_TRUE(tree.isValueOn(d)); |
| 105 | const auto b = openvdb::CoordBBox::createCube(d, 4); | ||
| 106 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveValues(tree, b)); |
| 107 | |||
| 108 | 1 | const openvdb::CoordBBox e(openvdb::Coord(0), openvdb::Coord(dim)); | |
| 109 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveValues(tree, e)); |
| 110 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveTiles(tree, e)); |
| 111 | |||
| 112 |
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1 | auto tiles = openvdb::tools::activeTiles(tree, e); |
| 113 |
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1 | EXPECT_TRUE( tiles.size() == 0u ); |
| 114 | 1 | } | |
| 115 | |||
| 116 |
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2 | TEST_F(TestFindActiveValues, testSphere2) |
| 117 | { | ||
| 118 | const openvdb::Vec3f center(0.0f); | ||
| 119 | const float radius = 0.5f; | ||
| 120 | const int dim = 400, halfWidth = 3; | ||
| 121 | const float voxelSize = 2.0f/dim; | ||
| 122 | 1 | auto grid = openvdb::tools::createLevelSetSphere<openvdb::FloatGrid>(radius, center, voxelSize, halfWidth); | |
| 123 | openvdb::FloatTree& tree = grid->tree(); | ||
| 124 | |||
| 125 | {//test center | ||
| 126 | 1 | const openvdb::CoordBBox bbox(openvdb::Coord(0), openvdb::Coord(8)); | |
| 127 |
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1 | EXPECT_TRUE(!tree.isValueOn(openvdb::Coord(0))); |
| 128 | //openvdb::util::CpuTimer timer("\ncenter"); | ||
| 129 |
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1 | EXPECT_TRUE(!openvdb::tools::anyActiveValues(tree, bbox)); |
| 130 | //timer.stop(); | ||
| 131 | } | ||
| 132 | {//test on sphere | ||
| 133 | const openvdb::Coord d(int(radius/voxelSize), 0, 0); | ||
| 134 |
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1 | EXPECT_TRUE(tree.isValueOn(d)); |
| 135 | const auto bbox = openvdb::CoordBBox::createCube(d, 4); | ||
| 136 | //openvdb::util::CpuTimer timer("\non sphere"); | ||
| 137 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveValues(tree, bbox)); |
| 138 | //timer.stop(); | ||
| 139 | } | ||
| 140 | {//test full domain | ||
| 141 | 1 | const openvdb::CoordBBox bbox(openvdb::Coord(-4000), openvdb::Coord(4000)); | |
| 142 | //openvdb::util::CpuTimer timer("\nfull domain"); | ||
| 143 |
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1 | EXPECT_TRUE(openvdb::tools::anyActiveValues(tree, bbox)); |
| 144 | //timer.stop(); | ||
| 145 |
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2 | openvdb::tools::FindActiveValues<openvdb::FloatTree> op(tree); |
| 146 |
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1 | EXPECT_TRUE(op.count(bbox) == tree.activeVoxelCount()); |
| 147 | } | ||
| 148 | {// find largest inscribed cube in index space containing NO active values | ||
| 149 |
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2 | openvdb::tools::FindActiveValues<openvdb::FloatTree> op(tree); |
| 150 | 1 | auto bbox = openvdb::CoordBBox::createCube(openvdb::Coord(0), 1); | |
| 151 | //openvdb::util::CpuTimer timer("\nInscribed cube (class)"); | ||
| 152 | int count = 0; | ||
| 153 |
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58 | while(op.noActiveValues(bbox)) { |
| 154 | ++count; | ||
| 155 | bbox.expand(1); | ||
| 156 | } | ||
| 157 | //const double t = timer.stop(); | ||
| 158 | //std::cerr << "Inscribed bbox = " << bbox << std::endl; | ||
| 159 | const int n = int(openvdb::math::Sqrt(openvdb::math::Pow2(radius-halfWidth*voxelSize)/3.0f)/voxelSize) + 1; | ||
| 160 | //std::cerr << "n=" << n << std::endl; | ||
| 161 |
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1 | EXPECT_TRUE( bbox.max() == openvdb::Coord( n)); |
| 162 |
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1 | EXPECT_TRUE( bbox.min() == openvdb::Coord(-n)); |
| 163 | //openvdb::util::printTime(std::cerr, t/count, "time per lookup ", "\n", true, 4, 3); | ||
| 164 | } | ||
| 165 | {// find largest inscribed cube in index space containing NO active values | ||
| 166 | 1 | auto bbox = openvdb::CoordBBox::createCube(openvdb::Coord(0), 1); | |
| 167 | //openvdb::util::CpuTimer timer("\nInscribed cube (func)"); | ||
| 168 | int count = 0; | ||
| 169 |
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58 | while(!openvdb::tools::anyActiveValues(tree, bbox)) { |
| 170 | bbox.expand(1); | ||
| 171 | ++count; | ||
| 172 | } | ||
| 173 | //const double t = timer.stop(); | ||
| 174 | //std::cerr << "Inscribed bbox = " << bbox << std::endl; | ||
| 175 | const int n = int(openvdb::math::Sqrt(openvdb::math::Pow2(radius-halfWidth*voxelSize)/3.0f)/voxelSize) + 1; | ||
| 176 | //std::cerr << "n=" << n << std::endl; | ||
| 177 | //openvdb::util::printTime(std::cerr, t/count, "time per lookup ", "\n", true, 4, 3); | ||
| 178 |
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1 | EXPECT_TRUE( bbox.max() == openvdb::Coord( n)); |
| 179 |
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1 | EXPECT_TRUE( bbox.min() == openvdb::Coord(-n)); |
| 180 | } | ||
| 181 | 1 | } | |
| 182 | |||
| 183 |
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2 | TEST_F(TestFindActiveValues, testSparseBox) |
| 184 | { | ||
| 185 | {//test active tiles in a sparsely filled box | ||
| 186 | const int half_dim = 256; | ||
| 187 | 1 | const openvdb::CoordBBox bbox(openvdb::Coord(-half_dim), openvdb::Coord(half_dim-1)); | |
| 188 | 2 | openvdb::FloatTree tree; | |
| 189 |
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1 | EXPECT_TRUE(tree.activeTileCount() == 0); |
| 190 |
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1 | EXPECT_TRUE(tree.getValueDepth(openvdb::Coord(0)) == -1);//background value |
| 191 |
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2 | openvdb::tools::FindActiveValues<openvdb::FloatTree> op(tree); |
| 192 | |||
| 193 |
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1 | tree.sparseFill(bbox, 1.0f, true); |
| 194 | |||
| 195 |
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1 | op.update(tree);//tree was modified so op needs to be updated |
| 196 |
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1 | EXPECT_TRUE(tree.activeTileCount() > 0); |
| 197 |
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1 | EXPECT_TRUE(tree.getValueDepth(openvdb::Coord(0)) == 1);//upper internal tile value |
| 198 |
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256 | for (int i=1; i<half_dim; ++i) { |
| 199 |
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255 | EXPECT_TRUE( op.anyActiveValues(openvdb::CoordBBox::createCube(openvdb::Coord(-half_dim), i))); |
| 200 |
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255 | EXPECT_TRUE(!op.anyActiveVoxels(openvdb::CoordBBox::createCube(openvdb::Coord(-half_dim), i))); |
| 201 | } | ||
| 202 |
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2 | EXPECT_TRUE(op.count(bbox) == bbox.volume()); |
| 203 | |||
| 204 | 1 | auto bbox2 = openvdb::CoordBBox::createCube(openvdb::Coord(-half_dim), 1); | |
| 205 | //double t = 0.0; | ||
| 206 | //openvdb::util::CpuTimer timer; | ||
| 207 |
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514 | for (bool test = true; test; ) { |
| 208 | //timer.restart(); | ||
| 209 |
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513 | test = op.anyActiveValues(bbox2); |
| 210 | //t = std::max(t, timer.restart()); | ||
| 211 |
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513 | if (test) bbox2.translate(openvdb::Coord(1)); |
| 212 | } | ||
| 213 | //std::cerr << "bbox = " << bbox2 << std::endl; | ||
| 214 | //openvdb::util::printTime(std::cout, t, "The slowest sparse test ", "\n", true, 4, 3); | ||
| 215 |
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1 | EXPECT_TRUE(bbox2 == openvdb::CoordBBox::createCube(openvdb::Coord(half_dim), 1)); |
| 216 | |||
| 217 |
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1 | EXPECT_TRUE( openvdb::tools::anyActiveTiles(tree, bbox) ); |
| 218 | |||
| 219 |
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1 | auto tiles = openvdb::tools::activeTiles(tree, bbox); |
| 220 |
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1 | EXPECT_TRUE( tiles.size() == openvdb::math::Pow3(size_t(4)) ); // {-256, -129} -> {-128, 0} -> {0, 127} -> {128, 255} |
| 221 | //std::cerr << "bbox " << bbox << " overlaps with " << tiles.size() << " active tiles " << std::endl; | ||
| 222 | 1 | openvdb::CoordBBox tmp; | |
| 223 |
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65 | for (auto &t : tiles) { |
| 224 |
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64 | EXPECT_TRUE( t.state ); |
| 225 |
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64 | EXPECT_TRUE( t.level == 2);// tiles at level 1 are 8^3, at level 2 they are 128^3, and at level 3 they are 4096^3 |
| 226 |
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64 | EXPECT_TRUE( t.value == 1.0f); |
| 227 |
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64 | EXPECT_TRUE( t.bbox.volume() == openvdb::math::Pow3(openvdb::Index64(128)) ); |
| 228 | 64 | tmp.expand( t.bbox ); | |
| 229 | //std::cerr << t.bbox << std::endl; | ||
| 230 | } | ||
| 231 | //std::cerr << tmp << std::endl; | ||
| 232 |
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1 | EXPECT_TRUE( tmp == bbox );// uniion of all the active tiles should equal the bbox of the sparseFill operation! |
| 233 | } | ||
| 234 | 1 | }// testSparseBox | |
| 235 | |||
| 236 |
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2 | TEST_F(TestFindActiveValues, testDenseBox) |
| 237 | { | ||
| 238 | {//test active voxels in a densely filled box | ||
| 239 | const int half_dim = 256; | ||
| 240 | 1 | const openvdb::CoordBBox bbox(openvdb::Coord(-half_dim), openvdb::Coord(half_dim)); | |
| 241 | 2 | openvdb::FloatTree tree; | |
| 242 | |||
| 243 |
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1 | EXPECT_TRUE(tree.activeTileCount() == 0); |
| 244 |
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1 | EXPECT_TRUE(tree.getValueDepth(openvdb::Coord(0)) == -1);//background value |
| 245 | |||
| 246 |
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2 | tree.denseFill(bbox, 1.0f, true); |
| 247 | |||
| 248 |
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1 | EXPECT_TRUE(tree.activeTileCount() == 0); |
| 249 | |||
| 250 |
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2 | openvdb::tools::FindActiveValues<openvdb::FloatTree> op(tree); |
| 251 |
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1 | EXPECT_TRUE(tree.getValueDepth(openvdb::Coord(0)) == 3);// leaf value |
| 252 |
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256 | for (int i=1; i<half_dim; ++i) { |
| 253 |
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255 | EXPECT_TRUE(op.anyActiveValues(openvdb::CoordBBox::createCube(openvdb::Coord(0), i))); |
| 254 |
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255 | EXPECT_TRUE(op.anyActiveVoxels(openvdb::CoordBBox::createCube(openvdb::Coord(0), i))); |
| 255 | } | ||
| 256 |
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2 | EXPECT_TRUE(op.count(bbox) == bbox.volume()); |
| 257 | |||
| 258 | 1 | auto bbox2 = openvdb::CoordBBox::createCube(openvdb::Coord(-half_dim), 1); | |
| 259 | //double t = 0.0; | ||
| 260 | //openvdb::util::CpuTimer timer; | ||
| 261 |
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515 | for (bool test = true; test; ) { |
| 262 | //timer.restart(); | ||
| 263 |
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514 | test = op.anyActiveValues(bbox2); |
| 264 | //t = std::max(t, timer.restart()); | ||
| 265 |
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514 | if (test) bbox2.translate(openvdb::Coord(1)); |
| 266 | } | ||
| 267 | //std::cerr << "bbox = " << bbox2 << std::endl; | ||
| 268 | //openvdb::util::printTime(std::cout, t, "The slowest dense test ", "\n", true, 4, 3); | ||
| 269 |
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1 | EXPECT_TRUE(bbox2 == openvdb::CoordBBox::createCube(openvdb::Coord(half_dim + 1), 1)); |
| 270 | |||
| 271 |
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1 | auto tiles = openvdb::tools::activeTiles(tree, bbox); |
| 272 |
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1 | EXPECT_TRUE( tiles.size() == 0u ); |
| 273 | } | ||
| 274 | 1 | }// testDenseBox | |
| 275 | |||
| 276 |
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2 | TEST_F(TestFindActiveValues, testBenchmarks) |
| 277 | { | ||
| 278 | {//benchmark test against active tiles in a sparsely filled box | ||
| 279 | using namespace openvdb; | ||
| 280 | const int half_dim = 512, bbox_size = 6; | ||
| 281 | 1 | const CoordBBox bbox(Coord(-half_dim), Coord(half_dim)); | |
| 282 | 2 | FloatTree tree; | |
| 283 |
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1 | tree.sparseFill(bbox, 1.0f, true); |
| 284 |
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2 | tools::FindActiveValues<FloatTree> op(tree); |
| 285 | //double t = 0.0; | ||
| 286 | //util::CpuTimer timer; | ||
| 287 | 1 | for (auto b = CoordBBox::createCube(Coord(-half_dim), bbox_size); true; b.translate(Coord(1))) { | |
| 288 | //timer.restart(); | ||
| 289 |
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1026 | bool test = op.anyActiveValues(b); |
| 290 | //t = std::max(t, timer.restart()); | ||
| 291 |
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1026 | if (!test) break; |
| 292 | 1025 | } | |
| 293 | //std::cout << "\n*The slowest sparse test " << t << " milliseconds\n"; | ||
| 294 |
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2 | EXPECT_TRUE(op.count(bbox) == bbox.volume()); |
| 295 | } | ||
| 296 | {//benchmark test against active voxels in a densely filled box | ||
| 297 | using namespace openvdb; | ||
| 298 | const int half_dim = 256, bbox_size = 1; | ||
| 299 | 1 | const CoordBBox bbox(Coord(-half_dim), Coord(half_dim)); | |
| 300 | 2 | FloatTree tree; | |
| 301 |
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1 | tree.denseFill(bbox, 1.0f, true); |
| 302 |
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2 | tools::FindActiveValues<FloatTree> op(tree); |
| 303 | //double t = 0.0; | ||
| 304 | //openvdb::util::CpuTimer timer; | ||
| 305 | 1 | for (auto b = CoordBBox::createCube(Coord(-half_dim), bbox_size); true; b.translate(Coord(1))) { | |
| 306 | //timer.restart(); | ||
| 307 |
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514 | bool test = op.anyActiveValues(b); |
| 308 | //t = std::max(t, timer.restart()); | ||
| 309 |
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514 | if (!test) break; |
| 310 | 513 | } | |
| 311 | //std::cout << "*The slowest dense test " << t << " milliseconds\n"; | ||
| 312 |
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2 | EXPECT_TRUE(op.count(bbox) == bbox.volume()); |
| 313 | } | ||
| 314 | {//benchmark test against active voxels in a densely filled box | ||
| 315 | using namespace openvdb; | ||
| 316 | 2 | FloatTree tree; | |
| 317 |
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1 | tree.denseFill(CoordBBox::createCube(Coord(0), 256), 1.0f, true); |
| 318 |
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2 | tools::FindActiveValues<FloatTree> op(tree); |
| 319 | //openvdb::util::CpuTimer timer("new test"); | ||
| 320 |
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1 | EXPECT_TRUE(op.noActiveValues(CoordBBox::createCube(Coord(256), 1))); |
| 321 | //timer.stop(); | ||
| 322 | } | ||
| 323 | 1 | }// testBenchmarks | |
| 324 |