Coverage for tests/test_Vector3d.py: 21%
72 statements
« prev ^ index » next coverage.py v7.2.7, created at 2023-07-12 10:50 -0700
« prev ^ index » next coverage.py v7.2.7, created at 2023-07-12 10:50 -0700
1#
2# LSST Data Management System
3# See COPYRIGHT file at the top of the source tree.
4#
5# This product includes software developed by the
6# LSST Project (http://www.lsst.org/).
7#
8# This program is free software: you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation, either version 3 of the License, or
11# (at your option) any later version.
12#
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16# GNU General Public License for more details.
17#
18# You should have received a copy of the LSST License Statement and
19# the GNU General Public License along with this program. If not,
20# see <https://www.lsstcorp.org/LegalNotices/>.
21#
23import math
24import pickle
25import unittest
27from lsst.sphgeom import Angle, UnitVector3d, Vector3d
30class Vector3dTestCase(unittest.TestCase):
31 """Test 3D vector."""
33 def testConstruction(self):
34 v = Vector3d(1, 2, 3)
35 self.assertEqual(v.x(), 1)
36 self.assertEqual(v.y(), 2)
37 self.assertEqual(v.z(), 3)
39 def testComparison(self):
40 v = Vector3d(1, 2, 3)
41 self.assertEqual(v, Vector3d(1, 2, 3))
42 self.assertNotEqual(v, Vector3d(1, 2, 4))
44 def testIsZero(self):
45 self.assertTrue(Vector3d(0, 0, 0).isZero())
46 self.assertFalse(Vector3d(0, 0, 1).isZero())
48 def testAccess(self):
49 v = Vector3d(1, 2, 3)
50 self.assertEqual(len(v), 3)
51 self.assertEqual(v[0], 1)
52 self.assertEqual(v[1], 2)
53 self.assertEqual(v[2], 3)
54 self.assertEqual(v[-3], 1)
55 self.assertEqual(v[-2], 2)
56 self.assertEqual(v[-1], 3)
57 with self.assertRaises(IndexError):
58 v[-4]
59 with self.assertRaises(IndexError):
60 v[3]
62 def testNormal(self):
63 v = Vector3d(0, 2, 0)
64 self.assertEqual(v.getSquaredNorm(), 4)
65 self.assertEqual(v.getNorm(), 2)
66 v.normalize()
67 self.assertTrue(v.isNormalized())
68 self.assertEqual(v, Vector3d(0, 1, 0))
70 def testDot(self):
71 x = Vector3d(1, 0, 0)
72 y = Vector3d(0, 1, 0)
73 self.assertEqual(x.dot(y), 0)
75 def testCross(self):
76 x = Vector3d(1, 0, 0)
77 y = Vector3d(0, 1, 0)
78 self.assertEqual(x.cross(y), Vector3d(0, 0, 1))
80 def testArithmeticOperators(self):
81 self.assertEqual(-Vector3d(1, 1, 1), Vector3d(-1, -1, -1))
82 self.assertEqual(Vector3d(1, 1, 1) * 2, Vector3d(2, 2, 2))
83 self.assertEqual(Vector3d(2, 2, 2) / 2, Vector3d(1, 1, 1))
84 self.assertEqual(Vector3d(1, 1, 1) + Vector3d(1, 1, 1), Vector3d(2, 2, 2))
85 self.assertEqual(Vector3d(1, 1, 1) - Vector3d(1, 1, 1), Vector3d())
86 v = Vector3d(1, 1, 1)
87 v += Vector3d(3, 3, 3)
88 v -= Vector3d(2, 2, 2)
89 v *= 2.0
90 v /= 4.0
91 self.assertEqual(v, Vector3d(1, 1, 1))
92 self.assertEqual(v.cwiseProduct(Vector3d(2, 3, 4)), Vector3d(2, 3, 4))
94 def testRotation(self):
95 v = Vector3d(0, 1, 0).rotatedAround(UnitVector3d.X(), Angle(0.5 * math.pi))
96 self.assertAlmostEqual(v.x(), 0.0, places=15)
97 self.assertAlmostEqual(v.y(), 0.0, places=15)
98 self.assertAlmostEqual(v.z(), 1.0, places=15)
100 def testString(self):
101 v = Vector3d(1, 0, 0)
102 self.assertEqual(str(v), "[1.0, 0.0, 0.0]")
103 self.assertEqual(repr(v), "Vector3d(1.0, 0.0, 0.0)")
104 self.assertEqual(v, eval(repr(v), {"Vector3d": Vector3d}))
106 def testPickle(self):
107 v = Vector3d(1, 2, 3)
108 w = pickle.loads(pickle.dumps(v))
109 self.assertEqual(v, w)
112if __name__ == "__main__":
113 unittest.main()