Coverage for tests/test_Circle.py: 20%
122 statements
« prev ^ index » next coverage.py v6.4, created at 2022-06-02 03:22 -0700
« prev ^ index » next coverage.py v6.4, created at 2022-06-02 03:22 -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
24try:
25 import yaml
26except ImportError:
27 yaml = None
29import math
30import unittest
32import numpy as np
34from lsst.sphgeom import (Angle, CONTAINS, Circle, DISJOINT, Region,
35 UnitVector3d)
38class CircleTestCase(unittest.TestCase):
40 def setUp(self):
41 np.random.seed(1)
43 def test_construction(self):
44 self.assertTrue(Circle.empty().isEmpty())
45 self.assertTrue(Circle().isEmpty())
46 self.assertTrue(Circle.full().isFull())
47 c = Circle(UnitVector3d.X())
48 self.assertEqual(c.getOpeningAngle(), Angle(0))
49 self.assertEqual(c.getSquaredChordLength(), 0)
50 c = Circle(UnitVector3d.Z(), 2.0)
51 self.assertTrue(c.contains(UnitVector3d.Z()))
52 c = Circle(UnitVector3d.Z(), Angle(math.pi))
53 self.assertTrue(c.isFull())
54 d = c.clone()
55 self.assertEqual(c, d)
56 self.assertNotEqual(id(c), id(d))
57 e = Circle(d)
58 self.assertEqual(d, e)
60 def test_comparison_operators(self):
61 c = Circle(UnitVector3d.X(), 4.0)
62 d = Circle(UnitVector3d.Y(), 4.0)
63 self.assertEqual(c, d)
64 self.assertTrue(c.isFull())
65 self.assertNotEqual(c, Circle(UnitVector3d.Z()))
67 def test_center_and_dimensions(self):
68 c = Circle(UnitVector3d.X(), 1)
69 self.assertEqual(c.getCenter(), UnitVector3d.X())
70 self.assertEqual(c.getSquaredChordLength(), 1)
71 self.assertAlmostEqual(c.getOpeningAngle().asRadians(), math.pi / 3)
73 def test_relationships(self):
74 c = Circle(UnitVector3d.X(), Angle.fromDegrees(0.1))
75 d = Circle(UnitVector3d(1, 1, 1), Angle(math.pi / 2))
76 e = Circle(-UnitVector3d.X())
77 self.assertTrue(c.contains(UnitVector3d.X()))
78 self.assertTrue(UnitVector3d.X() in c)
79 self.assertTrue(d.contains(c))
80 self.assertTrue(c.isWithin(d))
81 self.assertTrue(c.intersects(d))
82 self.assertTrue(c.intersects(UnitVector3d.X()))
83 self.assertTrue(e.isDisjointFrom(d))
84 self.assertEqual(d.relate(c), CONTAINS)
85 self.assertEqual(e.relate(d), DISJOINT)
87 def test_vectorized_contains(self):
88 b = Circle(UnitVector3d(*np.random.randn(3)), Angle(0.4*math.pi))
89 x = np.random.rand(5, 3)
90 y = np.random.rand(5, 3)
91 z = np.random.rand(5, 3)
92 c = b.contains(x, y, z)
93 lon = np.arctan2(y, x)
94 lat = np.arctan2(z, np.hypot(x, y))
95 c2 = b.contains(lon, lat)
96 for i in range(x.shape[0]):
97 for j in range(x.shape[1]):
98 u = UnitVector3d(x[i, j], y[i, j], z[i, j])
99 self.assertEqual(c[i, j], b.contains(u))
100 self.assertEqual(c2[i, j], b.contains(u))
101 # test with non-contiguous memory
102 c3 = b.contains(x[::2], y[::2], z[::2])
103 c4 = b.contains(lon[::2], lat[::2])
104 for i in range(x.shape[0], 2):
105 for j in range(x.shape[1]):
106 u = UnitVector3d(x[i, j], y[i, j], z[i, j])
107 self.assertEqual(c3[i//2, j], b.contains(u))
108 self.assertEqual(c4[i//2, j], b.contains(u))
110 def test_expanding_and_clipping(self):
111 a = Circle.empty()
112 b = (a.expandedTo(UnitVector3d.X())
113 .expandedTo(Circle(UnitVector3d.Y(), 1))
114 .clippedTo(Circle(UnitVector3d(1, 1, 0), 1))
115 .clippedTo(UnitVector3d.Y()))
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),
155 'Circle(UnitVector3d(0.0, 0.0, 1.0), Angle(1.0))')
156 self.assertEqual(c, eval(repr(c), dict(
157 Angle=Angle, Circle=Circle, UnitVector3d=UnitVector3d)))
159 def test_pickle(self):
160 a = Circle(UnitVector3d(1, -1, 1), 1.0)
161 b = pickle.loads(pickle.dumps(a, pickle.HIGHEST_PROTOCOL))
162 self.assertEqual(a, b)
164 @unittest.skipIf(not yaml, "YAML module can not be imported")
165 def test_yaml(self):
166 a = Circle(UnitVector3d(1, -1, 1), 1.0)
167 b = yaml.safe_load(yaml.dump(a))
168 self.assertEqual(a, b)
171if __name__ == '__main__': 171 ↛ 172line 171 didn't jump to line 172, because the condition on line 171 was never true
172 unittest.main()