def test_expanding_and_clipping(self):
a = Circle.empty()
b = (a.expandedTo(UnitVector3d.X()).expandedTo(
Circle(UnitVector3d.Y(),
1)).clippedTo(Circle(UnitVector3d(1, 1, 0),
1)).clippedTo(UnitVector3d.Y()))
a.expandTo(UnitVector3d.X())
a.expandTo(Circle(UnitVector3d.Y(), 1))
a.clipTo(Circle(UnitVector3d(1, 1, 0), 1))
a.clipTo(UnitVector3d.Y())
self.assertEqual(a, b)
self.assertEqual(a, Circle(UnitVector3d.Y()))
a.clipTo(UnitVector3d.Z())
self.assertTrue(a.isEmpty())
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)