#
# LSST Data Management System
# See COPYRIGHT file at the top of the source tree.
#
# This product includes software developed by the
# LSST Project (http://www.lsst.org/).
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the LSST License Statement and
# the GNU General Public License along with this program. If not,
# see <https://www.lsstcorp.org/LegalNotices/>.
#
from __future__ import absolute_import, division, print_function
import math
import pickle
import unittest
from lsst.sphgeom import Angle, UnitVector3d, Vector3d
class Vector3dTestCase(unittest.TestCase):
def testConstruction(self):
v = Vector3d(1, 2, 3)
self.assertEqual(v.x(), 1)
self.assertEqual(v.y(), 2)
self.assertEqual(v.z(), 3)
def testComparison(self):
v = Vector3d(1, 2, 3)
self.assertEqual(v, Vector3d(1, 2, 3))
self.assertNotEqual(v, Vector3d(1, 2, 4))
def testIsZero(self):
self.assertTrue(Vector3d(0, 0, 0).isZero())
self.assertFalse(Vector3d(0, 0, 1).isZero())
def testAccess(self):
v = Vector3d(1, 2, 3)
self.assertEqual(len(v), 3)
self.assertEqual(v[0], 1)
self.assertEqual(v[1], 2)
self.assertEqual(v[2], 3)
self.assertEqual(v[-3], 1)
self.assertEqual(v[-2], 2)
self.assertEqual(v[-1], 3)
with self.assertRaises(IndexError):
v[-4]
with self.assertRaises(IndexError):
v[3]
def testNormal(self):
v = Vector3d(0, 2, 0)
self.assertEqual(v.getSquaredNorm(), 4)
self.assertEqual(v.getNorm(), 2)
v.normalize()
self.assertTrue(v.isNormalized())
self.assertEqual(v, Vector3d(0, 1, 0))
def testDot(self):
x = Vector3d(1, 0, 0)
y = Vector3d(0, 1, 0)
self.assertEqual(x.dot(y), 0)
def testCross(self):
x = Vector3d(1, 0, 0)
y = Vector3d(0, 1, 0)
self.assertEqual(x.cross(y), Vector3d(0, 0, 1))
def testArithmeticOperators(self):
self.assertEqual(-Vector3d(1, 1, 1), Vector3d(-1, -1, -1))
self.assertEqual(Vector3d(1, 1, 1) * 2, Vector3d(2, 2, 2))
self.assertEqual(Vector3d(2, 2, 2) / 2, Vector3d(1, 1, 1))
self.assertEqual(Vector3d(1, 1, 1) + Vector3d(1, 1, 1),
Vector3d(2, 2, 2))
self.assertEqual(Vector3d(1, 1, 1) - Vector3d(1, 1, 1), Vector3d())
v = Vector3d(1, 1, 1)
v += Vector3d(3, 3, 3)
v -= Vector3d(2, 2, 2)
v *= 2.0
v /= 4.0
self.assertEqual(v, Vector3d(1, 1, 1))
self.assertEqual(v.cwiseProduct(Vector3d(2, 3, 4)), Vector3d(2, 3, 4))
def testRotation(self):
v = Vector3d(0, 1, 0).rotatedAround(UnitVector3d.X(),
Angle(0.5 * math.pi))
self.assertAlmostEqual(v.x(), 0.0, places=15)
self.assertAlmostEqual(v.y(), 0.0, places=15)
self.assertAlmostEqual(v.z(), 1.0, places=15)
def testString(self):
v = Vector3d(1, 0, 0)
self.assertEqual(str(v), '[1.0, 0.0, 0.0]')
self.assertEqual(repr(v), 'Vector3d(1.0, 0.0, 0.0)')
self.assertEqual(v, eval(repr(v), dict(Vector3d=Vector3d)))
def testPickle(self):
v = Vector3d(1, 2, 3)
w = pickle.loads(pickle.dumps(v))
self.assertEqual(v, w)
114 ↛ 115line 114 didn't jump to line 115, because the condition on line 114 was never trueif __name__ == '__main__':
unittest.main()
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