| 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/math/Transform.h> | ||
| 6 | |||
| 7 | #include <gtest/gtest.h> | ||
| 8 | |||
| 9 | #include <sstream> | ||
| 10 | |||
| 11 | |||
| 12 | 5 | class TestTransform: public ::testing::Test | |
| 13 | { | ||
| 14 | public: | ||
| 15 | void SetUp() override; | ||
| 16 | void TearDown() override; | ||
| 17 | }; | ||
| 18 | |||
| 19 | |||
| 20 | //////////////////////////////////////// | ||
| 21 | |||
| 22 | |||
| 23 | void | ||
| 24 | 5 | TestTransform::SetUp() | |
| 25 | { | ||
| 26 | 5 | openvdb::math::MapRegistry::clear(); | |
| 27 | 5 | openvdb::math::AffineMap::registerMap(); | |
| 28 | 5 | openvdb::math::ScaleMap::registerMap(); | |
| 29 | 5 | openvdb::math::UniformScaleMap::registerMap(); | |
| 30 | 5 | openvdb::math::TranslationMap::registerMap(); | |
| 31 | 5 | openvdb::math::ScaleTranslateMap::registerMap(); | |
| 32 | 5 | openvdb::math::UniformScaleTranslateMap::registerMap(); | |
| 33 | 5 | } | |
| 34 | |||
| 35 | |||
| 36 | void | ||
| 37 | 5 | TestTransform::TearDown() | |
| 38 | { | ||
| 39 | 5 | openvdb::math::MapRegistry::clear(); | |
| 40 | 5 | } | |
| 41 | |||
| 42 | |||
| 43 | ////openvdb:://////////////////////////////////// | ||
| 44 | |||
| 45 | |||
| 46 |
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1 | TEST_F(TestTransform, testLinearTransform) |
| 47 | { | ||
| 48 | using namespace openvdb; | ||
| 49 | double TOL = 1e-7; | ||
| 50 | |||
| 51 | // Test: Scaling | ||
| 52 | 1 | math::Transform::Ptr t = math::Transform::createLinearTransform(0.5); | |
| 53 | |||
| 54 | Vec3R voxelSize = t->voxelSize(); | ||
| 55 |
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1 | EXPECT_NEAR(0.5, voxelSize[0], TOL); |
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1 | EXPECT_NEAR(0.5, voxelSize[1], TOL); |
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1 | EXPECT_NEAR(0.5, voxelSize[2], TOL); |
| 58 | |||
| 59 |
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1 | EXPECT_TRUE(t->hasUniformScale()); |
| 60 | |||
| 61 | // world to index space | ||
| 62 | Vec3R xyz(-1.0, 2.0, 4.0); | ||
| 63 | 1 | xyz = t->worldToIndex(xyz); | |
| 64 |
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1 | EXPECT_NEAR(-2.0, xyz[0], TOL); |
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1 | EXPECT_NEAR( 4.0, xyz[1], TOL); |
| 66 |
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1 | EXPECT_NEAR( 8.0, xyz[2], TOL); |
| 67 | |||
| 68 |
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1 | xyz = Vec3R(-0.7, 2.4, 4.7); |
| 69 | |||
| 70 | // cell centered conversion | ||
| 71 |
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1 | Coord ijk = t->worldToIndexCellCentered(xyz); |
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1 | EXPECT_EQ(Coord(-1, 5, 9), ijk); |
| 73 | |||
| 74 | // node centrered conversion | ||
| 75 |
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1 | ijk = t->worldToIndexNodeCentered(xyz); |
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1 | EXPECT_EQ(Coord(-2, 4, 9), ijk); |
| 77 | |||
| 78 | // index to world space | ||
| 79 |
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1 | ijk = Coord(4, 2, -8); |
| 80 | 1 | xyz = t->indexToWorld(ijk); | |
| 81 |
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1 | EXPECT_NEAR( 2.0, xyz[0], TOL); |
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1 | EXPECT_NEAR( 1.0, xyz[1], TOL); |
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1 | EXPECT_NEAR(-4.0, xyz[2], TOL); |
| 84 | |||
| 85 | // I/O test | ||
| 86 | { | ||
| 87 | std::stringstream | ||
| 88 |
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2 | ss(std::stringstream::in | std::stringstream::out | std::stringstream::binary); |
| 89 | |||
| 90 |
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1 | t->write(ss); |
| 91 | |||
| 92 |
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1 | t = math::Transform::createLinearTransform(); |
| 93 | |||
| 94 | // Since we wrote only a fragment of a VDB file (in particular, we didn't | ||
| 95 | // write the header), set the file format version number explicitly. | ||
| 96 |
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1 | io::setCurrentVersion(ss); |
| 97 | |||
| 98 |
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1 | t->read(ss); |
| 99 | } | ||
| 100 | |||
| 101 | // check map type | ||
| 102 |
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3 | EXPECT_EQ(math::UniformScaleMap::mapType(), t->baseMap()->type()); |
| 103 | |||
| 104 | 1 | voxelSize = t->voxelSize(); | |
| 105 | |||
| 106 |
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1 | EXPECT_NEAR(0.5, voxelSize[0], TOL); |
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1 | EXPECT_NEAR(0.5, voxelSize[1], TOL); |
| 108 |
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1 | EXPECT_NEAR(0.5, voxelSize[2], TOL); |
| 109 | |||
| 110 | ////////// | ||
| 111 | |||
| 112 | // Test: Scale, translation & rotation | ||
| 113 |
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2 | t = math::Transform::createLinearTransform(2.0); |
| 114 | |||
| 115 | // rotate, 180 deg, (produces a diagonal matrix that can be simplified into a scale map) | ||
| 116 | // with diagonal -2, 2, -2 | ||
| 117 | const double PI = std::atan(1.0)*4; | ||
| 118 |
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1 | t->preRotate(PI, math::Y_AXIS); |
| 119 | |||
| 120 | // this is just a rotation so it will have uniform scale | ||
| 121 |
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1 | EXPECT_TRUE(t->hasUniformScale()); |
| 122 | |||
| 123 |
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3 | EXPECT_EQ(math::ScaleMap::mapType(), t->baseMap()->type()); |
| 124 | |||
| 125 |
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1 | voxelSize = t->voxelSize(); |
| 126 | 1 | xyz = t->worldToIndex(Vec3R(-2.0, -2.0, -2.0)); | |
| 127 | |||
| 128 |
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1 | EXPECT_NEAR(2.0, voxelSize[0], TOL); |
| 129 |
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1 | EXPECT_NEAR(2.0, voxelSize[1], TOL); |
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1 | EXPECT_NEAR(2.0, voxelSize[2], TOL); |
| 131 | |||
| 132 |
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1 | EXPECT_NEAR( 1.0, xyz[0], TOL); |
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1 | EXPECT_NEAR(-1.0, xyz[1], TOL); |
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1 | EXPECT_NEAR( 1.0, xyz[2], TOL); |
| 135 | |||
| 136 | // translate | ||
| 137 |
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1 | t->postTranslate(Vec3d(1.0, 0.0, 1.0)); |
| 138 | |||
| 139 |
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3 | EXPECT_EQ(math::ScaleTranslateMap::mapType(), t->baseMap()->type()); |
| 140 | |||
| 141 |
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1 | voxelSize = t->voxelSize(); |
| 142 | 1 | xyz = t->worldToIndex(Vec3R(-2.0, -2.0, -2.0)); | |
| 143 | |||
| 144 |
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1 | EXPECT_NEAR(2.0, voxelSize[0], TOL); |
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1 | EXPECT_NEAR(2.0, voxelSize[1], TOL); |
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1 | EXPECT_NEAR(2.0, voxelSize[2], TOL); |
| 147 | |||
| 148 |
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1 | EXPECT_NEAR( 1.5, xyz[0], TOL); |
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1 | EXPECT_NEAR(-1.0, xyz[1], TOL); |
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1 | EXPECT_NEAR( 1.5, xyz[2], TOL); |
| 151 | |||
| 152 | |||
| 153 | // I/O test | ||
| 154 | { | ||
| 155 | std::stringstream | ||
| 156 |
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2 | ss(std::stringstream::in | std::stringstream::out | std::stringstream::binary); |
| 157 | |||
| 158 |
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1 | t->write(ss); |
| 159 | |||
| 160 |
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1 | t = math::Transform::createLinearTransform(); |
| 161 | |||
| 162 | // Since we wrote only a fragment of a VDB file (in particular, we didn't | ||
| 163 | // write the header), set the file format version number explicitly. | ||
| 164 |
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1 | io::setCurrentVersion(ss); |
| 165 | |||
| 166 |
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1 | t->read(ss); |
| 167 | } | ||
| 168 | |||
| 169 | // check map type | ||
| 170 |
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3 | EXPECT_EQ(math::ScaleTranslateMap::mapType(), t->baseMap()->type()); |
| 171 | |||
| 172 | 1 | voxelSize = t->voxelSize(); | |
| 173 | |||
| 174 |
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1 | EXPECT_NEAR(2.0, voxelSize[0], TOL); |
| 175 |
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1 | EXPECT_NEAR(2.0, voxelSize[1], TOL); |
| 176 |
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1 | EXPECT_NEAR(2.0, voxelSize[2], TOL); |
| 177 | |||
| 178 | 1 | xyz = t->worldToIndex(Vec3R(-2.0, -2.0, -2.0)); | |
| 179 | |||
| 180 |
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1 | EXPECT_NEAR( 1.5, xyz[0], TOL); |
| 181 |
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1 | EXPECT_NEAR(-1.0, xyz[1], TOL); |
| 182 |
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1 | EXPECT_NEAR( 1.5, xyz[2], TOL); |
| 183 | |||
| 184 | // new transform | ||
| 185 |
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2 | t = math::Transform::createLinearTransform(1.0); |
| 186 | |||
| 187 | // rotate 90 deg | ||
| 188 |
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1 | t->preRotate( std::atan(1.0) * 2 , math::Y_AXIS); |
| 189 | |||
| 190 | // check map type | ||
| 191 |
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3 | EXPECT_EQ(math::AffineMap::mapType(), t->baseMap()->type()); |
| 192 | |||
| 193 | 1 | xyz = t->worldToIndex(Vec3R(1.0, 1.0, 1.0)); | |
| 194 | |||
| 195 |
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1 | EXPECT_NEAR(-1.0, xyz[0], TOL); |
| 196 |
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1 | EXPECT_NEAR( 1.0, xyz[1], TOL); |
| 197 |
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1 | EXPECT_NEAR( 1.0, xyz[2], TOL); |
| 198 | |||
| 199 | // I/O test | ||
| 200 | { | ||
| 201 | std::stringstream | ||
| 202 |
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2 | ss(std::stringstream::in | std::stringstream::out | std::stringstream::binary); |
| 203 | |||
| 204 |
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1 | t->write(ss); |
| 205 | |||
| 206 |
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2 | t = math::Transform::createLinearTransform(); |
| 207 | |||
| 208 |
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3 | EXPECT_EQ(math::UniformScaleMap::mapType(), t->baseMap()->type()); |
| 209 | |||
| 210 | ✗ | xyz = t->worldToIndex(Vec3R(1.0, 1.0, 1.0)); | |
| 211 | |||
| 212 |
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1 | EXPECT_NEAR(1.0, xyz[0], TOL); |
| 213 |
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1 | EXPECT_NEAR(1.0, xyz[1], TOL); |
| 214 |
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1 | EXPECT_NEAR(1.0, xyz[2], TOL); |
| 215 | |||
| 216 | // Since we wrote only a fragment of a VDB file (in particular, we didn't | ||
| 217 | // write the header), set the file format version number explicitly. | ||
| 218 |
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1 | io::setCurrentVersion(ss); |
| 219 | |||
| 220 |
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1 | t->read(ss); |
| 221 | } | ||
| 222 | |||
| 223 | // check map type | ||
| 224 |
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3 | EXPECT_EQ(math::AffineMap::mapType(), t->baseMap()->type()); |
| 225 | |||
| 226 | ✗ | xyz = t->worldToIndex(Vec3R(1.0, 1.0, 1.0)); | |
| 227 | |||
| 228 |
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1 | EXPECT_NEAR(-1.0, xyz[0], TOL); |
| 229 |
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1 | EXPECT_NEAR( 1.0, xyz[1], TOL); |
| 230 |
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1 | EXPECT_NEAR( 1.0, xyz[2], TOL); |
| 231 | 1 | } | |
| 232 | |||
| 233 | |||
| 234 | //////////////////////////////////////// | ||
| 235 | |||
| 236 |
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1 | TEST_F(TestTransform, testTransformEquality) |
| 237 | { | ||
| 238 | using namespace openvdb; | ||
| 239 | |||
| 240 | // maps created in different ways may be equivalent | ||
| 241 | 1 | math::Transform::Ptr t1 = math::Transform::createLinearTransform(0.5); | |
| 242 | 1 | math::Mat4d mat = math::Mat4d::identity(); | |
| 243 | 1 | mat.preScale(math::Vec3d(0.5, 0.5, 0.5)); | |
| 244 |
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1 | math::Transform::Ptr t2 = math::Transform::createLinearTransform(mat); |
| 245 | |||
| 246 |
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1 | EXPECT_TRUE( *t1 == *t2); |
| 247 | |||
| 248 | // test that the auto-convert to the simplest form worked | ||
| 249 |
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1 | EXPECT_TRUE( t1->mapType() == t2->mapType()); |
| 250 | |||
| 251 | |||
| 252 | 1 | mat.preScale(math::Vec3d(1., 1., .4)); | |
| 253 |
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1 | math::Transform::Ptr t3 = math::Transform::createLinearTransform(mat); |
| 254 | |||
| 255 |
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1 | EXPECT_TRUE( *t1 != *t3); |
| 256 | |||
| 257 | // test equality between different but equivalent maps | ||
| 258 | math::UniformScaleTranslateMap::Ptr ustmap( | ||
| 259 |
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2 | new math::UniformScaleTranslateMap(1.0, math::Vec3d(0,0,0))); |
| 260 |
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2 | math::Transform::Ptr t4( new math::Transform( ustmap) ); |
| 261 |
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2 | EXPECT_TRUE( t4->baseMap()->isType<math::UniformScaleMap>() ); |
| 262 |
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1 | math::Transform::Ptr t5( new math::Transform); // constructs with a scale map |
| 263 |
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2 | EXPECT_TRUE( t5->baseMap()->isType<math::ScaleMap>() ); |
| 264 | |||
| 265 |
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1 | EXPECT_TRUE( *t5 == *t4); |
| 266 | |||
| 267 |
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1 | EXPECT_TRUE( t5->mapType() != t4->mapType() ); |
| 268 | |||
| 269 | // test inequatlity of two maps of the same type | ||
| 270 | math::UniformScaleTranslateMap::Ptr ustmap2( | ||
| 271 |
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2 | new math::UniformScaleTranslateMap(1.0, math::Vec3d(1,0,0))); |
| 272 |
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2 | math::Transform::Ptr t6( new math::Transform( ustmap2) ); |
| 273 |
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2 | EXPECT_TRUE( t6->baseMap()->isType<math::UniformScaleTranslateMap>() ); |
| 274 |
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1 | EXPECT_TRUE( *t6 != *t4); |
| 275 | |||
| 276 | // test comparison of linear to nonlinear map | ||
| 277 | 1 | openvdb::BBoxd bbox(math::Vec3d(0), math::Vec3d(100)); | |
| 278 |
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1 | math::Transform::Ptr frustum = math::Transform::createFrustumTransform(bbox, 0.25, 10); |
| 279 | |||
| 280 |
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1 | EXPECT_TRUE( *frustum != *t1 ); |
| 281 | |||
| 282 | |||
| 283 | 1 | } | |
| 284 | //////////////////////////////////////// | ||
| 285 | |||
| 286 |
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1 | TEST_F(TestTransform, testBackwardCompatibility) |
| 287 | { | ||
| 288 | using namespace openvdb; | ||
| 289 | double TOL = 1e-7; | ||
| 290 | |||
| 291 | // Register maps | ||
| 292 | 1 | math::MapRegistry::clear(); | |
| 293 | 1 | math::AffineMap::registerMap(); | |
| 294 | 1 | math::ScaleMap::registerMap(); | |
| 295 | 1 | math::TranslationMap::registerMap(); | |
| 296 | 1 | math::ScaleTranslateMap::registerMap(); | |
| 297 | |||
| 298 | std::stringstream | ||
| 299 | 2 | ss(std::stringstream::in | std::stringstream::out | std::stringstream::binary); | |
| 300 | |||
| 301 | |||
| 302 | ////////// | ||
| 303 | |||
| 304 | // Construct and write out an old transform that gets converted | ||
| 305 | // into a ScaleMap on read. | ||
| 306 | |||
| 307 | // First write the old transform type name | ||
| 308 |
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2 | writeString(ss, Name("LinearTransform")); |
| 309 | |||
| 310 | // Second write the old transform's base class membes. | ||
| 311 | Coord tmpMin(0), tmpMax(1); | ||
| 312 |
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1 | ss.write(reinterpret_cast<char*>(&tmpMin), sizeof(Coord::ValueType) * 3); |
| 313 |
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1 | ss.write(reinterpret_cast<char*>(&tmpMax), sizeof(Coord::ValueType) * 3); |
| 314 | |||
| 315 | // Last write out the old linear transform's members | ||
| 316 | 1 | math::Mat4d tmpLocalToWorld = math::Mat4d::identity(), | |
| 317 | 1 | tmpWorldToLocal = math::Mat4d::identity(), | |
| 318 | 1 | tmpVoxelToLocal = math::Mat4d::identity(), | |
| 319 | 1 | tmpLocalToVoxel = math::Mat4d::identity(); | |
| 320 | |||
| 321 |
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1 | tmpVoxelToLocal.preScale(math::Vec3d(0.5, 0.5, 0.5)); |
| 322 | |||
| 323 | tmpLocalToWorld.write(ss); | ||
| 324 | tmpWorldToLocal.write(ss); | ||
| 325 | tmpVoxelToLocal.write(ss); | ||
| 326 | tmpLocalToVoxel.write(ss); | ||
| 327 | |||
| 328 | // Read in the old transform and converting it to the new map based implementation. | ||
| 329 | |||
| 330 |
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1 | math::Transform::Ptr t = math::Transform::createLinearTransform(1.0); |
| 331 | |||
| 332 |
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1 | t->read(ss); |
| 333 | |||
| 334 | // check map type | ||
| 335 |
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3 | EXPECT_EQ(math::UniformScaleMap::mapType(), t->baseMap()->type()); |
| 336 | |||
| 337 | Vec3d voxelSize = t->voxelSize(); | ||
| 338 | |||
| 339 |
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1 | EXPECT_NEAR(0.5, voxelSize[0], TOL); |
| 340 |
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1 | EXPECT_NEAR(0.5, voxelSize[1], TOL); |
| 341 |
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1 | EXPECT_NEAR(0.5, voxelSize[2], TOL); |
| 342 | |||
| 343 | 1 | Vec3d xyz = t->worldToIndex(Vec3d(-1.0, 2.0, 4.0)); | |
| 344 | |||
| 345 |
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1 | EXPECT_NEAR(-2.0, xyz[0], TOL); |
| 346 |
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1 | EXPECT_NEAR( 4.0, xyz[1], TOL); |
| 347 |
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1 | EXPECT_NEAR( 8.0, xyz[2], TOL); |
| 348 | |||
| 349 | |||
| 350 | ////////// | ||
| 351 | |||
| 352 | // Construct and write out an old transform that gets converted | ||
| 353 | // into a ScaleTranslateMap on read. | ||
| 354 | |||
| 355 |
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1 | ss.clear(); |
| 356 |
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1 | writeString(ss, Name("LinearTransform")); |
| 357 |
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1 | ss.write(reinterpret_cast<char*>(&tmpMin), sizeof(Coord::ValueType) * 3); |
| 358 |
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1 | ss.write(reinterpret_cast<char*>(&tmpMax), sizeof(Coord::ValueType) * 3); |
| 359 | 1 | tmpLocalToWorld = math::Mat4d::identity(), | |
| 360 | 1 | tmpWorldToLocal = math::Mat4d::identity(), | |
| 361 | 1 | tmpVoxelToLocal = math::Mat4d::identity(), | |
| 362 | 1 | tmpLocalToVoxel = math::Mat4d::identity(); | |
| 363 | |||
| 364 |
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1 | tmpVoxelToLocal.preScale(math::Vec3d(2.0, 2.0, 2.0)); |
| 365 | tmpLocalToWorld.setTranslation(math::Vec3d(1.0, 0.0, 1.0)); | ||
| 366 | |||
| 367 | tmpLocalToWorld.write(ss); | ||
| 368 | tmpWorldToLocal.write(ss); | ||
| 369 | tmpVoxelToLocal.write(ss); | ||
| 370 | tmpLocalToVoxel.write(ss); | ||
| 371 | |||
| 372 | // Read in the old transform and converting it to the new map based implementation. | ||
| 373 | |||
| 374 |
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2 | t = math::Transform::createLinearTransform(); // rest transform |
| 375 |
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1 | t->read(ss); |
| 376 | |||
| 377 |
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3 | EXPECT_EQ(math::UniformScaleTranslateMap::mapType(), t->baseMap()->type()); |
| 378 | |||
| 379 | 1 | voxelSize = t->voxelSize(); | |
| 380 | |||
| 381 |
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1 | EXPECT_NEAR(2.0, voxelSize[0], TOL); |
| 382 |
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1 | EXPECT_NEAR(2.0, voxelSize[1], TOL); |
| 383 |
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1 | EXPECT_NEAR(2.0, voxelSize[2], TOL); |
| 384 | |||
| 385 | 1 | xyz = t->worldToIndex(Vec3d(1.0, 1.0, 1.0)); | |
| 386 | |||
| 387 |
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1 | EXPECT_NEAR(0.0, xyz[0], TOL); |
| 388 |
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1 | EXPECT_NEAR(0.5, xyz[1], TOL); |
| 389 |
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1 | EXPECT_NEAR(0.0, xyz[2], TOL); |
| 390 | |||
| 391 | |||
| 392 | ////////// | ||
| 393 | |||
| 394 | // Construct and write out an old transform that gets converted | ||
| 395 | // into a AffineMap on read. | ||
| 396 | |||
| 397 |
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1 | ss.clear(); |
| 398 |
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1 | writeString(ss, Name("LinearTransform")); |
| 399 |
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1 | ss.write(reinterpret_cast<char*>(&tmpMin), sizeof(Coord::ValueType) * 3); |
| 400 |
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1 | ss.write(reinterpret_cast<char*>(&tmpMax), sizeof(Coord::ValueType) * 3); |
| 401 | 1 | tmpLocalToWorld = math::Mat4d::identity(), | |
| 402 | 1 | tmpWorldToLocal = math::Mat4d::identity(), | |
| 403 | 1 | tmpVoxelToLocal = math::Mat4d::identity(), | |
| 404 | 1 | tmpLocalToVoxel = math::Mat4d::identity(); | |
| 405 | |||
| 406 | 1 | tmpVoxelToLocal.preScale(math::Vec3d(1.0, 1.0, 1.0)); | |
| 407 | 1 | tmpLocalToWorld.preRotate( math::Y_AXIS, std::atan(1.0) * 2); | |
| 408 | |||
| 409 | tmpLocalToWorld.write(ss); | ||
| 410 | tmpWorldToLocal.write(ss); | ||
| 411 | tmpVoxelToLocal.write(ss); | ||
| 412 | tmpLocalToVoxel.write(ss); | ||
| 413 | |||
| 414 | // Read in the old transform and converting it to the new map based implementation. | ||
| 415 | |||
| 416 |
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2 | t = math::Transform::createLinearTransform(); // rest transform |
| 417 |
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1 | t->read(ss); |
| 418 | |||
| 419 |
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3 | EXPECT_EQ(math::AffineMap::mapType(), t->baseMap()->type()); |
| 420 | |||
| 421 | 1 | voxelSize = t->voxelSize(); | |
| 422 | |||
| 423 |
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1 | EXPECT_NEAR(1.0, voxelSize[0], TOL); |
| 424 |
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1 | EXPECT_NEAR(1.0, voxelSize[1], TOL); |
| 425 |
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1 | EXPECT_NEAR(1.0, voxelSize[2], TOL); |
| 426 | |||
| 427 | ✗ | xyz = t->worldToIndex(Vec3d(1.0, 1.0, 1.0)); | |
| 428 | |||
| 429 |
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1 | EXPECT_NEAR(-1.0, xyz[0], TOL); |
| 430 |
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1 | EXPECT_NEAR( 1.0, xyz[1], TOL); |
| 431 |
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1 | EXPECT_NEAR( 1.0, xyz[2], TOL); |
| 432 | 1 | } | |
| 433 | |||
| 434 | |||
| 435 |
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1 | TEST_F(TestTransform, testIsIdentity) |
| 436 | { | ||
| 437 | using namespace openvdb; | ||
| 438 | 1 | math::Transform::Ptr t = math::Transform::createLinearTransform(1.0); | |
| 439 | |||
| 440 |
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1 | EXPECT_TRUE(t->isIdentity()); |
| 441 | |||
| 442 |
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1 | t->preScale(Vec3d(2,2,2)); |
| 443 | |||
| 444 |
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1 | EXPECT_TRUE(!t->isIdentity()); |
| 445 | |||
| 446 |
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1 | t->preScale(Vec3d(0.5,0.5,0.5)); |
| 447 |
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1 | EXPECT_TRUE(t->isIdentity()); |
| 448 | |||
| 449 | 1 | BBoxd bbox(math::Vec3d(-5,-5,0), Vec3d(5,5,10)); | |
| 450 | math::Transform::Ptr f = math::Transform::createFrustumTransform(bbox, | ||
| 451 | /*taper*/ 1, | ||
| 452 | /*depth*/ 1, | ||
| 453 |
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1 | /*voxel size*/ 1); |
| 454 |
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1 | f->preScale(Vec3d(10,10,10)); |
| 455 | |||
| 456 |
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1 | EXPECT_TRUE(f->isIdentity()); |
| 457 | |||
| 458 | // rotate by PI/2 | ||
| 459 |
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1 | f->postRotate(std::atan(1.0)*2, math::Y_AXIS); |
| 460 |
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1 | EXPECT_TRUE(!f->isIdentity()); |
| 461 | |||
| 462 |
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1 | f->postRotate(std::atan(1.0)*6, math::Y_AXIS); |
| 463 |
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1 | EXPECT_TRUE(f->isIdentity()); |
| 464 | 1 | } | |
| 465 | |||
| 466 | |||
| 467 |
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1 | TEST_F(TestTransform, testBoundingBoxes) |
| 468 | { | ||
| 469 | using namespace openvdb; | ||
| 470 | |||
| 471 | { | ||
| 472 |
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1 | math::Transform::ConstPtr t = math::Transform::createLinearTransform(0.5); |
| 473 | |||
| 474 | 1 | const BBoxd bbox(Vec3d(-8.0), Vec3d(16.0)); | |
| 475 | |||
| 476 |
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1 | BBoxd xBBox = t->indexToWorld(bbox); |
| 477 |
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1 | EXPECT_EQ(Vec3d(-4.0), xBBox.min()); |
| 478 |
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1 | EXPECT_EQ(Vec3d(8.0), xBBox.max()); |
| 479 | |||
| 480 |
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1 | xBBox = t->worldToIndex(xBBox); |
| 481 |
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1 | EXPECT_EQ(bbox.min(), xBBox.min()); |
| 482 |
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1 | EXPECT_EQ(bbox.max(), xBBox.max()); |
| 483 | } | ||
| 484 | { | ||
| 485 | const double PI = std::atan(1.0) * 4.0, SQRT2 = std::sqrt(2.0); | ||
| 486 | |||
| 487 | 1 | math::Transform::Ptr t = math::Transform::createLinearTransform(1.0); | |
| 488 |
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1 | t->preRotate(PI / 4.0, math::Z_AXIS); |
| 489 | |||
| 490 |
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1 | const BBoxd bbox(Vec3d(-10.0), Vec3d(10.0)); |
| 491 | |||
| 492 |
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1 | BBoxd xBBox = t->indexToWorld(bbox); // expand in x and y by sqrt(2) |
| 493 |
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1 | EXPECT_TRUE(Vec3d(-10.0 * SQRT2, -10.0 * SQRT2, -10.0).eq(xBBox.min())); |
| 494 |
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1 | EXPECT_TRUE(Vec3d(10.0 * SQRT2, 10.0 * SQRT2, 10.0).eq(xBBox.max())); |
| 495 | |||
| 496 |
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1 | xBBox = t->worldToIndex(xBBox); // expand again in x and y by sqrt(2) |
| 497 |
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1 | EXPECT_TRUE(Vec3d(-20.0, -20.0, -10.0).eq(xBBox.min())); |
| 498 |
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1 | EXPECT_TRUE(Vec3d(20.0, 20.0, 10.0).eq(xBBox.max())); |
| 499 | } | ||
| 500 | |||
| 501 | /// @todo frustum transform | ||
| 502 | 1 | } | |
| 503 | |||
| 504 | |||
| 505 | //////////////////////////////////////// | ||
| 506 | |||
| 507 | |||
| 508 | /// @todo Test the new frustum transform. | ||
| 509 | /* | ||
| 510 | TEST_F(TestTransform, testNonlinearTransform) | ||
| 511 | { | ||
| 512 | using namespace openvdb; | ||
| 513 | double TOL = 1e-7; | ||
| 514 | } | ||
| 515 | */ | ||
| 516 |