Coverage for tests/test_Circle.py: 19%
122 statements
« prev ^ index » next coverage.py v7.2.1, created at 2023-03-12 20:31 -0700
« prev ^ index » next coverage.py v7.2.1, created at 2023-03-12 20:31 -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, DISJOINT, Angle, Circle, Region, UnitVector3d
37class CircleTestCase(unittest.TestCase):
38 def setUp(self):
39 np.random.seed(1)
41 def test_construction(self):
42 self.assertTrue(Circle.empty().isEmpty())
43 self.assertTrue(Circle().isEmpty())
44 self.assertTrue(Circle.full().isFull())
45 c = Circle(UnitVector3d.X())
46 self.assertEqual(c.getOpeningAngle(), Angle(0))
47 self.assertEqual(c.getSquaredChordLength(), 0)
48 c = Circle(UnitVector3d.Z(), 2.0)
49 self.assertTrue(c.contains(UnitVector3d.Z()))
50 c = Circle(UnitVector3d.Z(), Angle(math.pi))
51 self.assertTrue(c.isFull())
52 d = c.clone()
53 self.assertEqual(c, d)
54 self.assertNotEqual(id(c), id(d))
55 e = Circle(d)
56 self.assertEqual(d, e)
58 def test_comparison_operators(self):
59 c = Circle(UnitVector3d.X(), 4.0)
60 d = Circle(UnitVector3d.Y(), 4.0)
61 self.assertEqual(c, d)
62 self.assertTrue(c.isFull())
63 self.assertNotEqual(c, Circle(UnitVector3d.Z()))
65 def test_center_and_dimensions(self):
66 c = Circle(UnitVector3d.X(), 1)
67 self.assertEqual(c.getCenter(), UnitVector3d.X())
68 self.assertEqual(c.getSquaredChordLength(), 1)
69 self.assertAlmostEqual(c.getOpeningAngle().asRadians(), math.pi / 3)
71 def test_relationships(self):
72 c = Circle(UnitVector3d.X(), Angle.fromDegrees(0.1))
73 d = Circle(UnitVector3d(1, 1, 1), Angle(math.pi / 2))
74 e = Circle(-UnitVector3d.X())
75 self.assertTrue(c.contains(UnitVector3d.X()))
76 self.assertTrue(UnitVector3d.X() in c)
77 self.assertTrue(d.contains(c))
78 self.assertTrue(c.isWithin(d))
79 self.assertTrue(c.intersects(d))
80 self.assertTrue(c.intersects(UnitVector3d.X()))
81 self.assertTrue(e.isDisjointFrom(d))
82 self.assertEqual(d.relate(c), CONTAINS)
83 self.assertEqual(e.relate(d), DISJOINT)
85 def test_vectorized_contains(self):
86 b = Circle(UnitVector3d(*np.random.randn(3)), Angle(0.4 * math.pi))
87 x = np.random.rand(5, 3)
88 y = np.random.rand(5, 3)
89 z = np.random.rand(5, 3)
90 c = b.contains(x, y, z)
91 lon = np.arctan2(y, x)
92 lat = np.arctan2(z, np.hypot(x, y))
93 c2 = b.contains(lon, lat)
94 for i in range(x.shape[0]):
95 for j in range(x.shape[1]):
96 u = UnitVector3d(x[i, j], y[i, j], z[i, j])
97 self.assertEqual(c[i, j], b.contains(u))
98 self.assertEqual(c2[i, j], b.contains(u))
99 # test with non-contiguous memory
100 c3 = b.contains(x[::2], y[::2], z[::2])
101 c4 = b.contains(lon[::2], lat[::2])
102 for i in range(x.shape[0], 2):
103 for j in range(x.shape[1]):
104 u = UnitVector3d(x[i, j], y[i, j], z[i, j])
105 self.assertEqual(c3[i // 2, j], b.contains(u))
106 self.assertEqual(c4[i // 2, j], b.contains(u))
108 def test_expanding_and_clipping(self):
109 a = Circle.empty()
110 b = (
111 a.expandedTo(UnitVector3d.X())
112 .expandedTo(Circle(UnitVector3d.Y(), 1))
113 .clippedTo(Circle(UnitVector3d(1, 1, 0), 1))
114 .clippedTo(UnitVector3d.Y())
115 )
116 a.expandTo(UnitVector3d.X())
117 a.expandTo(Circle(UnitVector3d.Y(), 1))
118 a.clipTo(Circle(UnitVector3d(1, 1, 0), 1))
119 a.clipTo(UnitVector3d.Y())
120 self.assertEqual(a, b)
121 self.assertEqual(a, Circle(UnitVector3d.Y()))
122 a.clipTo(UnitVector3d.Z())
123 self.assertTrue(a.isEmpty())
125 def test_dilation_and_erosion(self):
126 a = Angle(math.pi / 2)
127 c = Circle(UnitVector3d.X())
128 d = c.dilatedBy(a).erodedBy(a)
129 c.dilateBy(a).erodeBy(a)
130 self.assertEqual(c, d)
131 self.assertEqual(c, Circle(UnitVector3d.X()))
133 def test_complement(self):
134 c = Circle(UnitVector3d.X(), 2.0)
135 d = c.complemented()
136 c.complement()
137 self.assertEqual(c, d)
138 self.assertEqual(c.getCenter(), -UnitVector3d.X())
139 self.assertEqual(c.getSquaredChordLength(), 2.0)
141 def test_area(self):
142 c = Circle(UnitVector3d(1, 1, 1), 2.0)
143 self.assertAlmostEqual(c.getArea(), 2 * math.pi)
145 def test_codec(self):
146 c = Circle(UnitVector3d.Y(), 1.0)
147 s = c.encode()
148 self.assertEqual(Circle.decode(s), c)
149 self.assertEqual(Region.decode(s), c)
151 def test_string(self):
152 c = Circle(UnitVector3d.Z(), Angle(1.0))
153 self.assertEqual(str(c), "Circle([0.0, 0.0, 1.0], 1.0)")
154 self.assertEqual(repr(c), "Circle(UnitVector3d(0.0, 0.0, 1.0), Angle(1.0))")
155 self.assertEqual(c, eval(repr(c), dict(Angle=Angle, Circle=Circle, UnitVector3d=UnitVector3d)))
157 def test_pickle(self):
158 a = Circle(UnitVector3d(1, -1, 1), 1.0)
159 b = pickle.loads(pickle.dumps(a, pickle.HIGHEST_PROTOCOL))
160 self.assertEqual(a, b)
162 @unittest.skipIf(not yaml, "YAML module can not be imported")
163 def test_yaml(self):
164 a = Circle(UnitVector3d(1, -1, 1), 1.0)
165 b = yaml.safe_load(yaml.dump(a))
166 self.assertEqual(a, b)
169if __name__ == "__main__": 169 ↛ 170line 169 didn't jump to line 170, because the condition on line 169 was never true
170 unittest.main()