def test_construction(self):
self.assertTrue(Circle.empty().isEmpty())
self.assertTrue(Circle().isEmpty())
self.assertTrue(Circle.full().isFull())
c = Circle(UnitVector3d.X())
self.assertEqual(c.getOpeningAngle(), Angle(0))
self.assertEqual(c.getSquaredChordLength(), 0)
c = Circle(UnitVector3d.Z(), 2.0)
self.assertTrue(c.contains(UnitVector3d.Z()))
c = Circle(UnitVector3d.Z(), Angle(math.pi))
self.assertTrue(c.isFull())
d = c.clone()
self.assertEqual(c, d)
self.assertNotEqual(id(c), id(d))
e = Circle(d)
self.assertEqual(d, e)
def test_center_and_dimensions(self):
c = Circle(UnitVector3d.X(), 1)
self.assertEqual(c.getCenter(), UnitVector3d.X())
self.assertEqual(c.getSquaredChordLength(), 1)
self.assertAlmostEqual(c.getOpeningAngle().asRadians(), math.pi / 3)