Coverage for tests/test_Ellipse.py: 20%
89 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 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 """Test Ellipse."""
40 def test_construction(self):
41 self.assertTrue(Ellipse.empty().isEmpty())
42 self.assertTrue(Ellipse().isEmpty())
43 self.assertTrue(Ellipse.full().isFull())
44 e = Ellipse(Circle(UnitVector3d.X(), Angle(math.pi / 2)))
45 f = Ellipse(UnitVector3d.X(), Angle(math.pi / 2))
46 self.assertEqual(e, f)
47 self.assertEqual(e.getAlpha(), e.getBeta())
48 self.assertTrue(e.isCircle())
49 self.assertTrue(e.isGreatCircle())
50 g = Ellipse(e)
51 h = e.clone()
52 self.assertEqual(e, g)
53 self.assertEqual(g, h)
54 self.assertNotEqual(id(e), id(g))
55 self.assertNotEqual(id(g), id(h))
57 def test_comparison_operators(self):
58 e = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3))
59 f = Ellipse(UnitVector3d.X(), Angle(math.pi / 3), Angle(math.pi / 6), Angle(0))
60 self.assertEqual(e, e)
61 self.assertNotEqual(e, f)
63 def test_center_and_dimensions(self):
64 e = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3))
65 self.assertAlmostEqual(e.getF1().dot(UnitVector3d.X()), 1.0)
66 self.assertAlmostEqual(e.getF2().dot(UnitVector3d.Y()), 1.0)
67 self.assertAlmostEqual(e.getAlpha(), Angle(2 * math.pi / 3))
68 f = Ellipse(UnitVector3d.X(), Angle(math.pi / 3), Angle(math.pi / 6), Angle(0))
69 self.assertEqual(f.getCenter(), UnitVector3d.X())
71 def test_relationships(self):
72 e = Ellipse(UnitVector3d.X(), Angle(math.pi / 3), Angle(math.pi / 6), Angle(0))
73 self.assertTrue(e.contains(UnitVector3d.X()))
74 self.assertTrue(UnitVector3d.X() in e)
75 c = Circle(UnitVector3d.X(), Angle(math.pi / 2))
76 self.assertEqual(c.relate(e), CONTAINS)
77 self.assertEqual(e.relate(c), WITHIN)
79 def test_vectorized_contains(self):
80 e = Ellipse(UnitVector3d.X(), Angle(math.pi / 3), Angle(math.pi / 6), Angle(0))
81 x = np.random.rand(5, 3)
82 y = np.random.rand(5, 3)
83 z = np.random.rand(5, 3)
84 c = e.contains(x, y, z)
85 lon = np.arctan2(y, x)
86 lat = np.arctan2(z, np.hypot(x, y))
87 c2 = e.contains(lon, lat)
88 for i in range(x.shape[0]):
89 for j in range(x.shape[1]):
90 u = UnitVector3d(x[i, j], y[i, j], z[i, j])
91 self.assertEqual(c[i, j], e.contains(u))
92 self.assertEqual(c2[i, j], e.contains(u))
93 # test with non-contiguous memory
94 c3 = e.contains(x[::2], y[::2], z[::2])
95 c4 = e.contains(lon[::2], lat[::2])
96 for i in range(x.shape[0], 2):
97 for j in range(x.shape[1]):
98 u = UnitVector3d(x[i, j], y[i, j], z[i, j])
99 self.assertEqual(c3[i // 2, j], e.contains(u))
100 self.assertEqual(c4[i // 2, j], e.contains(u))
102 def test_complement(self):
103 e = Ellipse(UnitVector3d.X(), Angle(math.pi / 3), Angle(math.pi / 6), Angle(0))
104 f = e.complemented().complement()
105 self.assertEqual(e, f)
107 def test_codec(self):
108 e = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3))
109 s = e.encode()
110 self.assertEqual(Ellipse.decode(s), e)
111 self.assertEqual(Region.decode(s), e)
113 def test_string(self):
114 c = Ellipse(UnitVector3d.Z(), Angle(1.0))
115 self.assertEqual(str(c), "Ellipse([0.0, 0.0, 1.0], [0.0, 0.0, 1.0], 1.0)")
116 self.assertEqual(
117 repr(c), "Ellipse(UnitVector3d(0.0, 0.0, 1.0), UnitVector3d(0.0, 0.0, 1.0), Angle(1.0))"
118 )
119 self.assertEqual(c, eval(repr(c), {"Angle": Angle, "Ellipse": Ellipse, "UnitVector3d": UnitVector3d}))
121 def test_pickle(self):
122 a = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3))
123 b = pickle.loads(pickle.dumps(a, pickle.HIGHEST_PROTOCOL))
124 self.assertEqual(a, b)
126 @unittest.skipIf(not yaml, "YAML module can not be imported")
127 def test_yaml(self):
128 a = Ellipse(UnitVector3d.X(), UnitVector3d.Y(), Angle(2 * math.pi / 3))
129 b = yaml.safe_load(yaml.dump(a))
130 self.assertEqual(a, b)
133if __name__ == "__main__":
134 unittest.main()