Coverage for tests/test_Ellipse.py: 21%
91 statements
« prev ^ index » next coverage.py v6.5.0, created at 2024-03-20 00:15 -0700
« prev ^ index » next coverage.py v6.5.0, created at 2024-03-20 00:15 -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 pickle
25try:
26 import yaml
27except ImportError:
28 yaml = None
30import math
31import unittest
33import numpy as np
34from lsst.sphgeom import CONTAINS, WITHIN, Angle, Circle, Ellipse, Region, UnitVector3d
37class EllipseTestCase(unittest.TestCase):
38 def test_construction(self):
39 self.assertTrue(Ellipse.empty().isEmpty())
40 self.assertTrue(Ellipse().isEmpty())
41 self.assertTrue(Ellipse.full().isFull())
42 e = Ellipse(Circle(UnitVector3d.X(), Angle(math.pi / 2)))
43 f = Ellipse(UnitVector3d.X(), Angle(math.pi / 2))
44 self.assertEqual(e, f)
45 self.assertEqual(e.getAlpha(), e.getBeta())
46 self.assertTrue(e.isCircle())
47 self.assertTrue(e.isGreatCircle())
48 g = Ellipse(e)
49 h = e.clone()
50 self.assertEqual(e, g)
51 self.assertEqual(g, h)
52 self.assertNotEqual(id(e), id(g))
53 self.assertNotEqual(id(g), id(h))
55 def test_comparison_operators(self):
56 e = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3))
57 f = Ellipse(UnitVector3d.X(), Angle(math.pi / 3), Angle(math.pi / 6), Angle(0))
58 self.assertEqual(e, e)
59 self.assertNotEqual(e, f)
61 def test_center_and_dimensions(self):
62 e = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3))
63 self.assertAlmostEqual(e.getF1().dot(UnitVector3d.X()), 1.0)
64 self.assertAlmostEqual(e.getF2().dot(UnitVector3d.Y()), 1.0)
65 self.assertAlmostEqual(e.getAlpha(), Angle(2 * math.pi / 3))
66 f = Ellipse(UnitVector3d.X(), Angle(math.pi / 3), Angle(math.pi / 6), Angle(0))
67 self.assertEqual(f.getCenter(), UnitVector3d.X())
69 def test_relationships(self):
70 e = Ellipse(UnitVector3d.X(), Angle(math.pi / 3), Angle(math.pi / 6), Angle(0))
71 self.assertTrue(e.contains(UnitVector3d.X()))
72 self.assertTrue(UnitVector3d.X() in e)
73 c = Circle(UnitVector3d.X(), Angle(math.pi / 2))
74 self.assertEqual(c.relate(e), CONTAINS)
75 self.assertEqual(e.relate(c), WITHIN)
77 def test_vectorized_contains(self):
78 e = Ellipse(UnitVector3d.X(), Angle(math.pi / 3), Angle(math.pi / 6), Angle(0))
79 x = np.random.rand(5, 3)
80 y = np.random.rand(5, 3)
81 z = np.random.rand(5, 3)
82 c = e.contains(x, y, z)
83 lon = np.arctan2(y, x)
84 lat = np.arctan2(z, np.hypot(x, y))
85 c2 = e.contains(lon, lat)
86 for i in range(x.shape[0]):
87 for j in range(x.shape[1]):
88 u = UnitVector3d(x[i, j], y[i, j], z[i, j])
89 self.assertEqual(c[i, j], e.contains(u))
90 self.assertEqual(c2[i, j], e.contains(u))
91 # test with non-contiguous memory
92 c3 = e.contains(x[::2], y[::2], z[::2])
93 c4 = e.contains(lon[::2], lat[::2])
94 for i in range(x.shape[0], 2):
95 for j in range(x.shape[1]):
96 u = UnitVector3d(x[i, j], y[i, j], z[i, j])
97 self.assertEqual(c3[i // 2, j], e.contains(u))
98 self.assertEqual(c4[i // 2, j], e.contains(u))
100 def test_complement(self):
101 e = Ellipse(UnitVector3d.X(), Angle(math.pi / 3), Angle(math.pi / 6), Angle(0))
102 f = e.complemented().complement()
103 self.assertEqual(e, f)
105 def test_codec(self):
106 e = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3))
107 s = e.encode()
108 self.assertEqual(Ellipse.decode(s), e)
109 self.assertEqual(Region.decode(s), e)
111 def test_string(self):
112 c = Ellipse(UnitVector3d.Z(), Angle(1.0))
113 self.assertEqual(str(c), "Ellipse([0.0, 0.0, 1.0], [0.0, 0.0, 1.0], 1.0)")
114 self.assertEqual(
115 repr(c), "Ellipse(UnitVector3d(0.0, 0.0, 1.0), UnitVector3d(0.0, 0.0, 1.0), Angle(1.0))"
116 )
117 self.assertEqual(c, eval(repr(c), dict(Angle=Angle, Ellipse=Ellipse, UnitVector3d=UnitVector3d)))
119 def test_pickle(self):
120 a = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3))
121 b = pickle.loads(pickle.dumps(a, pickle.HIGHEST_PROTOCOL))
122 self.assertEqual(a, b)
124 @unittest.skipIf(not yaml, "YAML module can not be imported")
125 def test_yaml(self):
126 a = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3))
127 b = yaml.safe_load(yaml.dump(a))
128 self.assertEqual(a, b)
131if __name__ == "__main__": 131 ↛ 132line 131 didn't jump to line 132, because the condition on line 131 was never true
132 unittest.main()