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| 1 | // Copyright Contributors to the OpenVDB Project | ||
| 2 | // SPDX-License-Identifier: MPL-2.0 | ||
| 3 | |||
| 4 | #include <openvdb/openvdb.h> | ||
| 5 | #include <openvdb/points/PointScatter.h> | ||
| 6 | #include <openvdb/points/PointCount.h> | ||
| 7 | #include <openvdb/points/PointDataGrid.h> | ||
| 8 | #include <openvdb/math/Math.h> | ||
| 9 | #include <openvdb/math/Coord.h> | ||
| 10 | |||
| 11 | #include <gtest/gtest.h> | ||
| 12 | |||
| 13 | #include <random> | ||
| 14 | |||
| 15 | |||
| 16 | using namespace openvdb; | ||
| 17 | using namespace openvdb::points; | ||
| 18 | |||
| 19 | 3 | class TestPointScatter: public ::testing::Test | |
| 20 | { | ||
| 21 | public: | ||
| 22 | 3 | void SetUp() override { openvdb::initialize(); } | |
| 23 | 3 | void TearDown() override { openvdb::uninitialize(); } | |
| 24 | }; // class TestPointScatter | ||
| 25 | |||
| 26 | |||
| 27 |
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1 | TEST_F(TestPointScatter, testUniformPointScatter) |
| 28 | { | ||
| 29 | 1 | const Index64 total = 50; | |
| 30 | 1 | const math::CoordBBox boxBounds(math::Coord(-1), math::Coord(1)); // 27 voxels across 8 leaves | |
| 31 | |||
| 32 | // Test the free function for all default grid types - 50 points across 27 voxels | ||
| 33 | // ensures all voxels receive points | ||
| 34 | |||
| 35 | { | ||
| 36 | 2 | BoolGrid grid; | |
| 37 |
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1 | grid.sparseFill(boxBounds, false, /*active*/true); |
| 38 |
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1 | auto points = points::uniformPointScatter(grid, total); |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 42 | } | ||
| 43 | { | ||
| 44 | 2 | DoubleGrid grid; | |
| 45 |
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1 | grid.sparseFill(boxBounds, 0.0, /*active*/true); |
| 46 |
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1 | auto points = points::uniformPointScatter(grid, total); |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 50 | } | ||
| 51 | { | ||
| 52 | 2 | FloatGrid grid; | |
| 53 |
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1 | grid.sparseFill(boxBounds, 0.0f, /*active*/true); |
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1 | auto points = points::uniformPointScatter(grid, total); |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 58 | } | ||
| 59 | { | ||
| 60 | 2 | Int32Grid grid; | |
| 61 |
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1 | grid.sparseFill(boxBounds, 0, /*active*/true); |
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1 | auto points = points::uniformPointScatter(grid, total); |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 64 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 66 | } | ||
| 67 | { | ||
| 68 | 2 | Int64Grid grid; | |
| 69 |
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1 | grid.sparseFill(boxBounds, 0, /*active*/true); |
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1 | auto points = points::uniformPointScatter(grid, total); |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 74 | } | ||
| 75 | { | ||
| 76 | 2 | MaskGrid grid; | |
| 77 |
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1 | grid.sparseFill(boxBounds, /*maskBuffer*/true); |
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1 | auto points = points::uniformPointScatter(grid, total); |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 82 | } | ||
| 83 | { | ||
| 84 | 2 | Vec3DGrid grid; | |
| 85 |
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3 | grid.sparseFill(boxBounds, Vec3d(), /*active*/true); |
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1 | auto points = points::uniformPointScatter(grid, total); |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 90 | } | ||
| 91 | { | ||
| 92 | 2 | Vec3IGrid grid; | |
| 93 |
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3 | grid.sparseFill(boxBounds, Vec3i(), /*active*/true); |
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1 | auto points = points::uniformPointScatter(grid, total); |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 98 | } | ||
| 99 | { | ||
| 100 | 2 | Vec3SGrid grid; | |
| 101 |
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3 | grid.sparseFill(boxBounds, Vec3f(), /*active*/true); |
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1 | auto points = points::uniformPointScatter(grid, total); |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 106 | } | ||
| 107 | { | ||
| 108 | 2 | PointDataGrid grid; | |
| 109 | ✗ | grid.sparseFill(boxBounds, 0, /*active*/true); | |
| 110 |
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1 | auto points = points::uniformPointScatter(grid, total); |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 113 |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 114 | } | ||
| 115 | |||
| 116 | // Test 0 produces empty grid | ||
| 117 | |||
| 118 | { | ||
| 119 | 2 | BoolGrid grid; | |
| 120 |
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1 | grid.sparseFill(boxBounds, false, /*active*/true); |
| 121 |
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1 | auto points = points::uniformPointScatter(grid, 0); |
| 122 |
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1 | EXPECT_TRUE(points->empty()); |
| 123 | } | ||
| 124 | |||
| 125 | // Test single point scatter and topology | ||
| 126 | |||
| 127 | { | ||
| 128 | 2 | BoolGrid grid; | |
| 129 |
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1 | grid.sparseFill(boxBounds, false, /*active*/true); |
| 130 |
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1 | auto points = points::uniformPointScatter(grid, 1); |
| 131 |
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1 | EXPECT_EQ(Index32(1), points->tree().leafCount()); |
| 132 |
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1 | EXPECT_EQ(Index64(1), points->activeVoxelCount()); |
| 133 |
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1 | EXPECT_EQ(Index64(1), pointCount(points->tree())); |
| 134 | } | ||
| 135 | |||
| 136 | // Test a grid containing tiles scatters correctly | ||
| 137 | |||
| 138 | 2 | BoolGrid grid; | |
| 139 |
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2 | grid.tree().addTile(/*level*/1, math::Coord(0), /*value*/true, /*active*/true); |
| 140 | |||
| 141 | const Index32 NUM_VALUES = BoolGrid::TreeType::LeafNodeType::NUM_VALUES; | ||
| 142 | |||
| 143 |
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1 | EXPECT_EQ(Index64(NUM_VALUES), grid.activeVoxelCount()); |
| 144 | |||
| 145 |
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1 | auto points = points::uniformPointScatter(grid, total); |
| 146 | |||
| 147 |
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1 | EXPECT_EQ(Index64(0), points->tree().activeTileCount()); |
| 148 |
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1 | EXPECT_EQ(Index32(1), points->tree().leafCount()); |
| 149 |
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1 | EXPECT_TRUE(Index64(NUM_VALUES) > points->tree().activeVoxelCount()); |
| 150 |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 151 | |||
| 152 | // Explicitly check P attribute | ||
| 153 | |||
| 154 | const auto* attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); | ||
| 155 |
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1 | EXPECT_EQ(size_t(1), attributeSet->size()); |
| 156 |
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1 | const auto* array = attributeSet->getConst(0); |
| 157 |
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1 | EXPECT_TRUE(array); |
| 158 | |||
| 159 | using PositionArrayT = TypedAttributeArray<Vec3f, NullCodec>; | ||
| 160 |
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1 | EXPECT_TRUE(array->isType<PositionArrayT>()); |
| 161 | |||
| 162 |
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1 | size_t size = array->size(); |
| 163 |
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1 | EXPECT_EQ(size_t(total), size); |
| 164 | |||
| 165 | AttributeHandle<Vec3f, NullCodec>::Ptr pHandle = | ||
| 166 |
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1 | AttributeHandle<Vec3f, NullCodec>::create(*array); |
| 167 |
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51 | for (size_t i = 0; i < size; ++i) { |
| 168 | 50 | const Vec3f P = pHandle->get(Index(i)); | |
| 169 |
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50 | EXPECT_TRUE(P[0] >=-0.5f); |
| 170 |
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50 | EXPECT_TRUE(P[0] <= 0.5f); |
| 171 |
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50 | EXPECT_TRUE(P[1] >=-0.5f); |
| 172 |
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50 | EXPECT_TRUE(P[1] <= 0.5f); |
| 173 |
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50 | EXPECT_TRUE(P[2] >=-0.5f); |
| 174 |
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50 | EXPECT_TRUE(P[2] <= 0.5f); |
| 175 | } | ||
| 176 | |||
| 177 | // Test the rng seed | ||
| 178 | |||
| 179 | 1 | const Vec3f firstPosition = pHandle->get(0); | |
| 180 |
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2 | points = points::uniformPointScatter(grid, total, /*seed*/1); |
| 181 | |||
| 182 |
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1 | attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); |
| 183 |
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1 | EXPECT_EQ(size_t(1), attributeSet->size()); |
| 184 | |||
| 185 |
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1 | array = attributeSet->getConst(0); |
| 186 |
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1 | EXPECT_TRUE(array); |
| 187 |
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1 | EXPECT_TRUE(array->isType<PositionArrayT>()); |
| 188 | |||
| 189 |
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1 | size = array->size(); |
| 190 |
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1 | EXPECT_EQ(size_t(total), size); |
| 191 |
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2 | pHandle = AttributeHandle<Vec3f, NullCodec>::create(*array); |
| 192 | |||
| 193 | 1 | const Vec3f secondPosition = pHandle->get(0); | |
| 194 |
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1 | EXPECT_TRUE(!math::isExactlyEqual(firstPosition[0], secondPosition[0])); |
| 195 |
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1 | EXPECT_TRUE(!math::isExactlyEqual(firstPosition[1], secondPosition[1])); |
| 196 |
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1 | EXPECT_TRUE(!math::isExactlyEqual(firstPosition[2], secondPosition[2])); |
| 197 | |||
| 198 | // Test spread | ||
| 199 | |||
| 200 |
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2 | points = points::uniformPointScatter(grid, total, /*seed*/1, /*spread*/0.2f); |
| 201 | |||
| 202 |
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1 | attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); |
| 203 |
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1 | EXPECT_EQ(size_t(1), attributeSet->size()); |
| 204 |
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1 | array = attributeSet->getConst(0); |
| 205 |
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1 | EXPECT_TRUE(array); |
| 206 |
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1 | EXPECT_TRUE(array->isType<PositionArrayT>()); |
| 207 | |||
| 208 |
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1 | size = array->size(); |
| 209 |
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1 | EXPECT_EQ(size_t(total), size); |
| 210 | |||
| 211 |
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2 | pHandle = AttributeHandle<Vec3f, NullCodec>::create(*array); |
| 212 |
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51 | for (size_t i = 0; i < size; ++i) { |
| 213 | 50 | const Vec3f P = pHandle->get(Index(i)); | |
| 214 |
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50 | EXPECT_TRUE(P[0] >=-0.2f); |
| 215 |
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50 | EXPECT_TRUE(P[0] <= 0.2f); |
| 216 |
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50 | EXPECT_TRUE(P[1] >=-0.2f); |
| 217 |
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50 | EXPECT_TRUE(P[1] <= 0.2f); |
| 218 |
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50 | EXPECT_TRUE(P[2] >=-0.2f); |
| 219 |
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50 | EXPECT_TRUE(P[2] <= 0.2f); |
| 220 | } | ||
| 221 | |||
| 222 | // Test mt11213b | ||
| 223 | |||
| 224 | using mt11213b = std::mersenne_twister_engine<uint32_t, 32, 351, 175, 19, | ||
| 225 | 0xccab8ee7, 11, 0xffffffff, 7, 0x31b6ab00, 15, 0xffe50000, 17, 1812433253>; | ||
| 226 | |||
| 227 |
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2 | points = points::uniformPointScatter<BoolGrid, mt11213b>(grid, total); |
| 228 | |||
| 229 |
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1 | EXPECT_EQ(Index32(1), points->tree().leafCount()); |
| 230 |
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1 | EXPECT_TRUE(Index64(NUM_VALUES) > points->tree().activeVoxelCount()); |
| 231 |
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1 | EXPECT_EQ(total, pointCount(points->tree())); |
| 232 | |||
| 233 | // Test no remainder - grid contains one tile, scatter NUM_VALUES points | ||
| 234 | |||
| 235 |
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2 | points = points::uniformPointScatter(grid, Index64(NUM_VALUES)); |
| 236 | |||
| 237 |
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1 | EXPECT_EQ(Index32(1), points->tree().leafCount()); |
| 238 |
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1 | EXPECT_EQ(Index64(NUM_VALUES), points->activeVoxelCount()); |
| 239 |
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1 | EXPECT_EQ(Index64(NUM_VALUES), pointCount(points->tree())); |
| 240 | |||
| 241 |
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1 | const auto* const leaf = points->tree().probeConstLeaf(math::Coord(0)); |
| 242 |
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1 | EXPECT_TRUE(leaf); |
| 243 |
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1 | EXPECT_TRUE(leaf->isDense()); |
| 244 | |||
| 245 |
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1 | const auto* const data = leaf->buffer().data(); |
| 246 |
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1 | EXPECT_EQ(Index32(1), Index32(data[1] - data[0])); |
| 247 | |||
| 248 |
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512 | for (size_t i = 1; i < NUM_VALUES; ++i) { |
| 249 |
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511 | const Index32 offset = data[i] - data[i - 1]; |
| 250 |
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511 | EXPECT_EQ(Index32(1), offset); |
| 251 | } | ||
| 252 | 1 | } | |
| 253 | |||
| 254 |
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2 | TEST_F(TestPointScatter, testDenseUniformPointScatter) |
| 255 | { | ||
| 256 | const Index32 pointsPerVoxel = 8; | ||
| 257 | 1 | const math::CoordBBox boxBounds(math::Coord(-1), math::Coord(1)); // 27 voxels across 8 leaves | |
| 258 | |||
| 259 | // Test the free function for all default grid types | ||
| 260 | |||
| 261 | { | ||
| 262 | 2 | BoolGrid grid; | |
| 263 |
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1 | grid.sparseFill(boxBounds, false, /*active*/true); |
| 264 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 265 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 266 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 267 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 268 | } | ||
| 269 | { | ||
| 270 | 2 | DoubleGrid grid; | |
| 271 |
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1 | grid.sparseFill(boxBounds, 0.0, /*active*/true); |
| 272 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 273 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 274 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 275 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 276 | } | ||
| 277 | { | ||
| 278 | 2 | FloatGrid grid; | |
| 279 |
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1 | grid.sparseFill(boxBounds, 0.0f, /*active*/true); |
| 280 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 281 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 282 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 283 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 284 | } | ||
| 285 | { | ||
| 286 | 2 | Int32Grid grid; | |
| 287 |
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1 | grid.sparseFill(boxBounds, 0, /*active*/true); |
| 288 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 289 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 290 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 291 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 292 | } | ||
| 293 | { | ||
| 294 | 2 | Int64Grid grid; | |
| 295 |
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1 | grid.sparseFill(boxBounds, 0, /*active*/true); |
| 296 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 297 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 298 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 299 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 300 | } | ||
| 301 | { | ||
| 302 | 2 | MaskGrid grid; | |
| 303 |
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1 | grid.sparseFill(boxBounds, /*maskBuffer*/true); |
| 304 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 305 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 306 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 307 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 308 | } | ||
| 309 | { | ||
| 310 | 2 | Vec3DGrid grid; | |
| 311 |
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3 | grid.sparseFill(boxBounds, Vec3d(), /*active*/true); |
| 312 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 313 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 314 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 315 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 316 | } | ||
| 317 | { | ||
| 318 | 2 | Vec3IGrid grid; | |
| 319 |
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3 | grid.sparseFill(boxBounds, Vec3i(), /*active*/true); |
| 320 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 321 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 322 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 323 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 324 | } | ||
| 325 | { | ||
| 326 | 2 | Vec3SGrid grid; | |
| 327 |
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3 | grid.sparseFill(boxBounds, Vec3f(), /*active*/true); |
| 328 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 329 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 330 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 331 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 332 | } | ||
| 333 | { | ||
| 334 | 2 | PointDataGrid grid; | |
| 335 | ✗ | grid.sparseFill(boxBounds, 0, /*active*/true); | |
| 336 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 337 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 338 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 339 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 340 | } | ||
| 341 | |||
| 342 | // Test 0 produces empty grid | ||
| 343 | |||
| 344 | { | ||
| 345 | 2 | BoolGrid grid; | |
| 346 |
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1 | grid.sparseFill(boxBounds, false, /*active*/true); |
| 347 |
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1 | auto points = points::denseUniformPointScatter(grid, 0.0f); |
| 348 |
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1 | EXPECT_TRUE(points->empty()); |
| 349 | } | ||
| 350 | |||
| 351 | // Test topology between 0 - 1 | ||
| 352 | |||
| 353 | { | ||
| 354 | 2 | BoolGrid grid; | |
| 355 |
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1 | grid.sparseFill(boxBounds, false, /*active*/true); |
| 356 |
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1 | auto points = points::denseUniformPointScatter(grid, 0.8f); |
| 357 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 358 | // Note that a value of 22 is precomputed as the number of active | ||
| 359 | // voxels/points produced by a value of 0.8 | ||
| 360 |
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1 | EXPECT_EQ(Index64(22), points->activeVoxelCount()); |
| 361 |
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1 | EXPECT_EQ(Index64(22), pointCount(points->tree())); |
| 362 | |||
| 363 | // Test below 0 throws | ||
| 364 | |||
| 365 |
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2 | EXPECT_THROW(points::denseUniformPointScatter(grid, -0.1f), openvdb::ValueError); |
| 366 | } | ||
| 367 | |||
| 368 | // Test a grid containing tiles scatters correctly | ||
| 369 | |||
| 370 | 2 | BoolGrid grid; | |
| 371 |
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2 | grid.tree().addTile(/*level*/1, math::Coord(0), /*value*/true, /*active*/true); |
| 372 |
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1 | grid.tree().setValueOn(math::Coord(8,0,0)); // add another leaf |
| 373 | |||
| 374 | const Index32 NUM_VALUES = BoolGrid::TreeType::LeafNodeType::NUM_VALUES; | ||
| 375 | |||
| 376 |
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1 | EXPECT_EQ(Index32(1), grid.tree().leafCount()); |
| 377 |
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1 | EXPECT_EQ(Index64(NUM_VALUES + 1), grid.activeVoxelCount()); |
| 378 | |||
| 379 |
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1 | auto points = points::denseUniformPointScatter(grid, pointsPerVoxel); |
| 380 | |||
| 381 |
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1 | const Index64 expectedCount = Index64(pointsPerVoxel * (NUM_VALUES + 1)); |
| 382 | |||
| 383 |
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1 | EXPECT_EQ(Index64(0), points->tree().activeTileCount()); |
| 384 |
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1 | EXPECT_EQ(Index32(2), points->tree().leafCount()); |
| 385 |
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1 | EXPECT_EQ(Index64(NUM_VALUES + 1), points->activeVoxelCount()); |
| 386 |
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1 | EXPECT_EQ(expectedCount, pointCount(points->tree())); |
| 387 | |||
| 388 | // Explicitly check P attribute | ||
| 389 | |||
| 390 |
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1 | const auto* attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); |
| 391 |
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1 | EXPECT_EQ(size_t(1), attributeSet->size()); |
| 392 |
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1 | const auto* array = attributeSet->getConst(0); |
| 393 |
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1 | EXPECT_TRUE(array); |
| 394 | |||
| 395 | using PositionArrayT = TypedAttributeArray<Vec3f, NullCodec>; | ||
| 396 |
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1 | EXPECT_TRUE(array->isType<PositionArrayT>()); |
| 397 | |||
| 398 |
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1 | size_t size = array->size(); |
| 399 |
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1 | EXPECT_EQ(size_t(pointsPerVoxel * NUM_VALUES), size); |
| 400 | |||
| 401 | AttributeHandle<Vec3f, NullCodec>::Ptr pHandle = | ||
| 402 |
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1 | AttributeHandle<Vec3f, NullCodec>::create(*array); |
| 403 |
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4097 | for (size_t i = 0; i < size; ++i) { |
| 404 | 4096 | const Vec3f P = pHandle->get(Index(i)); | |
| 405 |
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4096 | EXPECT_TRUE(P[0] >=-0.5f); |
| 406 |
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4096 | EXPECT_TRUE(P[0] <= 0.5f); |
| 407 |
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4096 | EXPECT_TRUE(P[1] >=-0.5f); |
| 408 |
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4096 | EXPECT_TRUE(P[1] <= 0.5f); |
| 409 |
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4096 | EXPECT_TRUE(P[2] >=-0.5f); |
| 410 |
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4096 | EXPECT_TRUE(P[2] <= 0.5f); |
| 411 | } | ||
| 412 | |||
| 413 | // Test the rng seed | ||
| 414 | |||
| 415 | 1 | const Vec3f firstPosition = pHandle->get(0); | |
| 416 |
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2 | points = points::denseUniformPointScatter(grid, pointsPerVoxel, /*seed*/1); |
| 417 | |||
| 418 |
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1 | attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); |
| 419 |
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1 | EXPECT_EQ(size_t(1), attributeSet->size()); |
| 420 | |||
| 421 |
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1 | array = attributeSet->getConst(0); |
| 422 |
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1 | EXPECT_TRUE(array); |
| 423 |
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1 | EXPECT_TRUE(array->isType<PositionArrayT>()); |
| 424 | |||
| 425 |
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1 | size = array->size(); |
| 426 |
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1 | EXPECT_EQ(size_t(pointsPerVoxel * NUM_VALUES), size); |
| 427 |
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2 | pHandle = AttributeHandle<Vec3f, NullCodec>::create(*array); |
| 428 | |||
| 429 | 1 | const Vec3f secondPosition = pHandle->get(0); | |
| 430 |
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1 | EXPECT_TRUE(!math::isExactlyEqual(firstPosition[0], secondPosition[0])); |
| 431 |
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1 | EXPECT_TRUE(!math::isExactlyEqual(firstPosition[1], secondPosition[1])); |
| 432 |
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1 | EXPECT_TRUE(!math::isExactlyEqual(firstPosition[2], secondPosition[2])); |
| 433 | |||
| 434 | // Test spread | ||
| 435 | |||
| 436 |
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2 | points = points::denseUniformPointScatter(grid, pointsPerVoxel, /*seed*/1, /*spread*/0.2f); |
| 437 | |||
| 438 |
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1 | attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); |
| 439 |
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1 | EXPECT_EQ(size_t(1), attributeSet->size()); |
| 440 |
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1 | array = attributeSet->getConst(0); |
| 441 |
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1 | EXPECT_TRUE(array); |
| 442 |
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1 | EXPECT_TRUE(array->isType<PositionArrayT>()); |
| 443 | |||
| 444 |
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1 | size = array->size(); |
| 445 |
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1 | EXPECT_EQ(size_t(pointsPerVoxel * NUM_VALUES), size); |
| 446 | |||
| 447 |
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2 | pHandle = AttributeHandle<Vec3f, NullCodec>::create(*array); |
| 448 |
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4097 | for (size_t i = 0; i < size; ++i) { |
| 449 | 4096 | const Vec3f P = pHandle->get(Index(i)); | |
| 450 |
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4096 | EXPECT_TRUE(P[0] >=-0.2f); |
| 451 |
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4096 | EXPECT_TRUE(P[0] <= 0.2f); |
| 452 |
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4096 | EXPECT_TRUE(P[1] >=-0.2f); |
| 453 |
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4096 | EXPECT_TRUE(P[1] <= 0.2f); |
| 454 |
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4096 | EXPECT_TRUE(P[2] >=-0.2f); |
| 455 |
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4096 | EXPECT_TRUE(P[2] <= 0.2f); |
| 456 | } | ||
| 457 | |||
| 458 | // Test mt11213b | ||
| 459 | |||
| 460 | using mt11213b = std::mersenne_twister_engine<uint32_t, 32, 351, 175, 19, | ||
| 461 | 0xccab8ee7, 11, 0xffffffff, 7, 0x31b6ab00, 15, 0xffe50000, 17, 1812433253>; | ||
| 462 | |||
| 463 |
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2 | points = points::denseUniformPointScatter<BoolGrid, mt11213b>(grid, pointsPerVoxel); |
| 464 | |||
| 465 |
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1 | EXPECT_EQ(Index32(2), points->tree().leafCount()); |
| 466 |
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1 | EXPECT_EQ(Index64(NUM_VALUES + 1), points->activeVoxelCount()); |
| 467 |
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1 | EXPECT_EQ(expectedCount, pointCount(points->tree())); |
| 468 | 1 | } | |
| 469 | |||
| 470 |
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2 | TEST_F(TestPointScatter, testNonUniformPointScatter) |
| 471 | { | ||
| 472 | const Index32 pointsPerVoxel = 8; | ||
| 473 | 1 | const math::CoordBBox totalBoxBounds(math::Coord(-2), math::Coord(2)); // 125 voxels across 8 leaves | |
| 474 | 1 | const math::CoordBBox activeBoxBounds(math::Coord(-1), math::Coord(1)); // 27 voxels across 8 leaves | |
| 475 | |||
| 476 | // Test the free function for all default scalar grid types | ||
| 477 | |||
| 478 | { | ||
| 479 | 2 | BoolGrid grid; | |
| 480 |
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1 | grid.sparseFill(totalBoxBounds, false, /*active*/true); |
| 481 |
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1 | grid.sparseFill(activeBoxBounds, true, /*active*/true); |
| 482 |
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1 | auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); |
| 483 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 484 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 485 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 486 | } | ||
| 487 | { | ||
| 488 | 2 | DoubleGrid grid; | |
| 489 |
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1 | grid.sparseFill(totalBoxBounds, 0.0, /*active*/true); |
| 490 |
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1 | grid.sparseFill(activeBoxBounds, 1.0, /*active*/true); |
| 491 |
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1 | auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); |
| 492 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 493 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 494 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 495 | } | ||
| 496 | { | ||
| 497 | 2 | FloatGrid grid; | |
| 498 |
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1 | grid.sparseFill(totalBoxBounds, 0.0f, /*active*/true); |
| 499 |
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1 | grid.sparseFill(activeBoxBounds, 1.0f, /*active*/true); |
| 500 |
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1 | auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); |
| 501 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 502 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 503 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 504 | } | ||
| 505 | { | ||
| 506 | 2 | Int32Grid grid; | |
| 507 |
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1 | grid.sparseFill(totalBoxBounds, 0, /*active*/true); |
| 508 |
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1 | grid.sparseFill(activeBoxBounds, 1, /*active*/true); |
| 509 |
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1 | auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); |
| 510 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 511 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 512 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 513 | } | ||
| 514 | { | ||
| 515 | 2 | Int64Grid grid; | |
| 516 |
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1 | grid.sparseFill(totalBoxBounds, 0, /*active*/true); |
| 517 |
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1 | grid.sparseFill(activeBoxBounds, 1, /*active*/true); |
| 518 |
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1 | auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); |
| 519 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 520 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 521 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 522 | } | ||
| 523 | { | ||
| 524 | 2 | MaskGrid grid; | |
| 525 |
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1 | grid.sparseFill(totalBoxBounds, /*maskBuffer*/0); |
| 526 |
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1 | grid.sparseFill(activeBoxBounds, /*maskBuffer*/1); |
| 527 |
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1 | auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); |
| 528 |
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1 | EXPECT_EQ(Index32(8), points->tree().leafCount()); |
| 529 |
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1 | EXPECT_EQ(Index64(27), points->activeVoxelCount()); |
| 530 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 27), pointCount(points->tree())); |
| 531 | } | ||
| 532 | |||
| 533 | 2 | BoolGrid grid; | |
| 534 | |||
| 535 | // Test below 0 throws | ||
| 536 | |||
| 537 |
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2 | EXPECT_THROW(points::nonUniformPointScatter(grid, -0.1f), openvdb::ValueError); |
| 538 | |||
| 539 | // Test a grid containing tiles scatters correctly | ||
| 540 | |||
| 541 |
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2 | grid.tree().addTile(/*level*/1, math::Coord(0), /*value*/true, /*active*/true); |
| 542 |
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2 | grid.tree().setValueOn(math::Coord(8,0,0), true); // add another leaf |
| 543 | |||
| 544 | const Index32 NUM_VALUES = BoolGrid::TreeType::LeafNodeType::NUM_VALUES; | ||
| 545 | |||
| 546 |
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1 | EXPECT_EQ(Index32(1), grid.tree().leafCount()); |
| 547 |
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1 | EXPECT_EQ(Index64(NUM_VALUES + 1), grid.activeVoxelCount()); |
| 548 | |||
| 549 |
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1 | auto points = points::nonUniformPointScatter(grid, pointsPerVoxel); |
| 550 | |||
| 551 |
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1 | const Index64 expectedCount = Index64(pointsPerVoxel * (NUM_VALUES + 1)); |
| 552 | |||
| 553 |
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1 | EXPECT_EQ(Index64(0), points->tree().activeTileCount()); |
| 554 |
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1 | EXPECT_EQ(Index32(2), points->tree().leafCount()); |
| 555 |
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1 | EXPECT_EQ(Index64(NUM_VALUES + 1), points->activeVoxelCount()); |
| 556 |
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1 | EXPECT_EQ(expectedCount, pointCount(points->tree())); |
| 557 | |||
| 558 | // Explicitly check P attribute | ||
| 559 | |||
| 560 |
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1 | const auto* attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); |
| 561 |
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1 | EXPECT_EQ(size_t(1), attributeSet->size()); |
| 562 |
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1 | const auto* array = attributeSet->getConst(0); |
| 563 |
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1 | EXPECT_TRUE(array); |
| 564 | |||
| 565 | using PositionArrayT = TypedAttributeArray<Vec3f, NullCodec>; | ||
| 566 |
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1 | EXPECT_TRUE(array->isType<PositionArrayT>()); |
| 567 | |||
| 568 |
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1 | size_t size = array->size(); |
| 569 |
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1 | EXPECT_EQ(size_t(pointsPerVoxel * NUM_VALUES), size); |
| 570 | |||
| 571 | AttributeHandle<Vec3f, NullCodec>::Ptr pHandle = | ||
| 572 |
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1 | AttributeHandle<Vec3f, NullCodec>::create(*array); |
| 573 |
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4097 | for (size_t i = 0; i < size; ++i) { |
| 574 | 4096 | const Vec3f P = pHandle->get(Index(i)); | |
| 575 |
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4096 | EXPECT_TRUE(P[0] >=-0.5f); |
| 576 |
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4096 | EXPECT_TRUE(P[0] <= 0.5f); |
| 577 |
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4096 | EXPECT_TRUE(P[1] >=-0.5f); |
| 578 |
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4096 | EXPECT_TRUE(P[1] <= 0.5f); |
| 579 |
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4096 | EXPECT_TRUE(P[2] >=-0.5f); |
| 580 |
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4096 | EXPECT_TRUE(P[2] <= 0.5f); |
| 581 | } | ||
| 582 | |||
| 583 | // Test the rng seed | ||
| 584 | |||
| 585 | 1 | const Vec3f firstPosition = pHandle->get(0); | |
| 586 |
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2 | points = points::nonUniformPointScatter(grid, pointsPerVoxel, /*seed*/1); |
| 587 | |||
| 588 |
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1 | attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); |
| 589 |
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1 | EXPECT_EQ(size_t(1), attributeSet->size()); |
| 590 | |||
| 591 |
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1 | array = attributeSet->getConst(0); |
| 592 |
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1 | EXPECT_TRUE(array); |
| 593 |
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1 | EXPECT_TRUE(array->isType<PositionArrayT>()); |
| 594 | |||
| 595 |
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1 | size = array->size(); |
| 596 |
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1 | EXPECT_EQ(size_t(pointsPerVoxel * NUM_VALUES), size); |
| 597 |
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2 | pHandle = AttributeHandle<Vec3f, NullCodec>::create(*array); |
| 598 | |||
| 599 | 1 | const Vec3f secondPosition = pHandle->get(0); | |
| 600 |
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1 | EXPECT_TRUE(!math::isExactlyEqual(firstPosition[0], secondPosition[0])); |
| 601 |
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1 | EXPECT_TRUE(!math::isExactlyEqual(firstPosition[1], secondPosition[1])); |
| 602 |
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1 | EXPECT_TRUE(!math::isExactlyEqual(firstPosition[2], secondPosition[2])); |
| 603 | |||
| 604 | // Test spread | ||
| 605 | |||
| 606 |
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2 | points = points::nonUniformPointScatter(grid, pointsPerVoxel, /*seed*/1, /*spread*/0.2f); |
| 607 | |||
| 608 |
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1 | attributeSet = &(points->tree().cbeginLeaf()->attributeSet()); |
| 609 |
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1 | EXPECT_EQ(size_t(1), attributeSet->size()); |
| 610 |
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1 | array = attributeSet->getConst(0); |
| 611 |
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1 | EXPECT_TRUE(array); |
| 612 |
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1 | EXPECT_TRUE(array->isType<PositionArrayT>()); |
| 613 | |||
| 614 |
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1 | size = array->size(); |
| 615 |
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1 | EXPECT_EQ(size_t(pointsPerVoxel * NUM_VALUES), size); |
| 616 | |||
| 617 |
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2 | pHandle = AttributeHandle<Vec3f, NullCodec>::create(*array); |
| 618 |
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4097 | for (size_t i = 0; i < size; ++i) { |
| 619 | 4096 | const Vec3f P = pHandle->get(Index(i)); | |
| 620 |
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4096 | EXPECT_TRUE(P[0] >=-0.2f); |
| 621 |
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4096 | EXPECT_TRUE(P[0] <= 0.2f); |
| 622 |
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4096 | EXPECT_TRUE(P[1] >=-0.2f); |
| 623 |
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4096 | EXPECT_TRUE(P[1] <= 0.2f); |
| 624 |
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4096 | EXPECT_TRUE(P[2] >=-0.2f); |
| 625 |
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4096 | EXPECT_TRUE(P[2] <= 0.2f); |
| 626 | } | ||
| 627 | |||
| 628 | // Test varying counts | ||
| 629 | |||
| 630 |
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2 | Int32Grid countGrid; |
| 631 | |||
| 632 | // tets negative values equate to 0 | ||
| 633 |
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1 | countGrid.tree().setValueOn(Coord(0), -1); |
| 634 |
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8 | for (int i = 1; i < 8; ++i) { |
| 635 | 7 | countGrid.tree().setValueOn(Coord(i), i); | |
| 636 | } | ||
| 637 | |||
| 638 |
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2 | points = points::nonUniformPointScatter(countGrid, pointsPerVoxel); |
| 639 | |||
| 640 |
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1 | EXPECT_EQ(Index32(1), points->tree().leafCount()); |
| 641 |
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1 | EXPECT_EQ(Index64(7), points->activeVoxelCount()); |
| 642 |
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1 | EXPECT_EQ(Index64(pointsPerVoxel * 28), pointCount(points->tree())); |
| 643 | |||
| 644 |
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8 | for (int i = 1; i < 8; ++i) { |
| 645 |
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7 | EXPECT_TRUE(points->tree().isValueOn(Coord(i))); |
| 646 | 7 | auto& value = points->tree().getValue(Coord(i)); | |
| 647 | Index32 expected(0); | ||
| 648 |
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35 | for (Index32 j = i; j > 0; --j) expected += j; |
| 649 |
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7 | EXPECT_EQ(Index32(expected * pointsPerVoxel), Index32(value)); |
| 650 | } | ||
| 651 | |||
| 652 | // Test mt11213b | ||
| 653 | |||
| 654 | using mt11213b = std::mersenne_twister_engine<uint32_t, 32, 351, 175, 19, | ||
| 655 | 0xccab8ee7, 11, 0xffffffff, 7, 0x31b6ab00, 15, 0xffe50000, 17, 1812433253>; | ||
| 656 | |||
| 657 |
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2 | points = points::nonUniformPointScatter<BoolGrid, mt11213b>(grid, pointsPerVoxel); |
| 658 | |||
| 659 |
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1 | EXPECT_EQ(Index32(2), points->tree().leafCount()); |
| 660 |
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1 | EXPECT_EQ(Index64(NUM_VALUES + 1), points->activeVoxelCount()); |
| 661 |
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1 | EXPECT_EQ(expectedCount, pointCount(points->tree())); |
| 662 | 1 | } | |
| 663 |