Coverage for tests/test_Circle.py : 22%

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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
32from lsst.sphgeom import (Angle, CONTAINS, Circle, DISJOINT, Region,
33 UnitVector3d)
36class CircleTestCase(unittest.TestCase):
38 def test_construction(self):
39 self.assertTrue(Circle.empty().isEmpty())
40 self.assertTrue(Circle().isEmpty())
41 self.assertTrue(Circle.full().isFull())
42 c = Circle(UnitVector3d.X())
43 self.assertEqual(c.getOpeningAngle(), Angle(0))
44 self.assertEqual(c.getSquaredChordLength(), 0)
45 c = Circle(UnitVector3d.Z(), 2.0)
46 self.assertTrue(c.contains(UnitVector3d.Z()))
47 c = Circle(UnitVector3d.Z(), Angle(math.pi))
48 self.assertTrue(c.isFull())
49 d = c.clone()
50 self.assertEqual(c, d)
51 self.assertNotEqual(id(c), id(d))
52 e = Circle(d)
53 self.assertEqual(d, e)
55 def test_comparison_operators(self):
56 c = Circle(UnitVector3d.X(), 4.0)
57 d = Circle(UnitVector3d.Y(), 4.0)
58 self.assertEqual(c, d)
59 self.assertTrue(c.isFull())
60 self.assertNotEqual(c, Circle(UnitVector3d.Z()))
62 def test_center_and_dimensions(self):
63 c = Circle(UnitVector3d.X(), 1)
64 self.assertEqual(c.getCenter(), UnitVector3d.X())
65 self.assertEqual(c.getSquaredChordLength(), 1)
66 self.assertAlmostEqual(c.getOpeningAngle().asRadians(), math.pi / 3)
68 def test_relationships(self):
69 c = Circle(UnitVector3d.X(), Angle.fromDegrees(0.1))
70 d = Circle(UnitVector3d(1, 1, 1), Angle(math.pi / 2))
71 e = Circle(-UnitVector3d.X())
72 self.assertTrue(c.contains(UnitVector3d.X()))
73 self.assertTrue(UnitVector3d.X() in c)
74 self.assertTrue(d.contains(c))
75 self.assertTrue(c.isWithin(d))
76 self.assertTrue(c.intersects(d))
77 self.assertTrue(c.intersects(UnitVector3d.X()))
78 self.assertTrue(e.isDisjointFrom(d))
79 self.assertEqual(d.relate(c), CONTAINS)
80 self.assertEqual(e.relate(d), DISJOINT)
82 def test_expanding_and_clipping(self):
83 a = Circle.empty()
84 b = (a.expandedTo(UnitVector3d.X())
85 .expandedTo(Circle(UnitVector3d.Y(), 1))
86 .clippedTo(Circle(UnitVector3d(1, 1, 0), 1))
87 .clippedTo(UnitVector3d.Y()))
88 a.expandTo(UnitVector3d.X())
89 a.expandTo(Circle(UnitVector3d.Y(), 1))
90 a.clipTo(Circle(UnitVector3d(1, 1, 0), 1))
91 a.clipTo(UnitVector3d.Y())
92 self.assertEqual(a, b)
93 self.assertEqual(a, Circle(UnitVector3d.Y()))
94 a.clipTo(UnitVector3d.Z())
95 self.assertTrue(a.isEmpty())
97 def test_dilation_and_erosion(self):
98 a = Angle(math.pi / 2)
99 c = Circle(UnitVector3d.X())
100 d = c.dilatedBy(a).erodedBy(a)
101 c.dilateBy(a).erodeBy(a)
102 self.assertEqual(c, d)
103 self.assertEqual(c, Circle(UnitVector3d.X()))
105 def test_complement(self):
106 c = Circle(UnitVector3d.X(), 2.0)
107 d = c.complemented()
108 c.complement()
109 self.assertEqual(c, d)
110 self.assertEqual(c.getCenter(), -UnitVector3d.X())
111 self.assertEqual(c.getSquaredChordLength(), 2.0)
113 def test_area(self):
114 c = Circle(UnitVector3d(1, 1, 1), 2.0)
115 self.assertAlmostEqual(c.getArea(), 2 * math.pi)
117 def test_codec(self):
118 c = Circle(UnitVector3d.Y(), 1.0)
119 s = c.encode()
120 self.assertEqual(Circle.decode(s), c)
121 self.assertEqual(Region.decode(s), c)
123 def test_string(self):
124 c = Circle(UnitVector3d.Z(), Angle(1.0))
125 self.assertEqual(str(c), 'Circle([0.0, 0.0, 1.0], 1.0)')
126 self.assertEqual(repr(c),
127 'Circle(UnitVector3d(0.0, 0.0, 1.0), Angle(1.0))')
128 self.assertEqual(c, eval(repr(c), dict(
129 Angle=Angle, Circle=Circle, UnitVector3d=UnitVector3d)))
131 def test_pickle(self):
132 a = Circle(UnitVector3d(1, -1, 1), 1.0)
133 b = pickle.loads(pickle.dumps(a, pickle.HIGHEST_PROTOCOL))
134 self.assertEqual(a, b)
136 @unittest.skipIf(not yaml, "YAML module can not be imported")
137 def test_yaml(self):
138 a = Circle(UnitVector3d(1, -1, 1), 1.0)
139 b = yaml.safe_load(yaml.dump(a))
140 self.assertEqual(a, b)
143if __name__ == '__main__': 143 ↛ 144line 143 didn't jump to line 144, because the condition on line 143 was never true
144 unittest.main()