def test_intercept_lines_2d(self):
u = VectorLine(Vector(0, 3), Vector(2, -1))
v = VectorLine(Vector(0, 0), Vector(1, -1))
intercept = u.intersect(v)
self.assertIsInstance(intercept, PointIntersection)
self.assertEqual(intercept.point, Vector(3, -3))
self.assertEqual(intercept.point, v.intersect(u).point)
def test_creation(self):
self.assertIsInstance(
VectorLine(Vector(2, 7, 4, 6), Vector(5, 8, 2, 1)), VectorLine)
self.assertIsInstance(VectorLine(Vector(2, 7, 4), Vector(5, 8, 2)),
VectorLine3D)
self.assertIsInstance(VectorLine(Vector(2, 7), Vector(5, 8)),
VectorLine2D)
def test_intercept_point_on_line(self):
u = VectorLine(Vector(1, 1), Vector(2, 0))
v = Vector(3, -1)
intercept = u.intersect(v)
self.assertIsInstance(intercept, PointIntersection)
self.assertEqual(intercept.point, Vector(3, -1))
self.assertEqual(intercept.point, v.intersect(u).point)
def test_different_dimensions(self):
with self.assertRaises(ValueError):
VectorLine(Vector(2, 7, 4), Vector(5, 8))
def test_creation(self):
self.assertIsInstance(Vector(1, 2, 3, 4), Vector)
def test_creation(self):
self.assertIsInstance(Vector(4, 2, 9), Point3D)
def test_creation(self):
self.assertIsInstance(Vector(1, 2), Point2D)
def test_intercept_parallel_line_2d(self):
u = VectorLine(Vector(1, 1), Vector(2, 0))
v = VectorLine(Vector(0, 0), Vector(2, -2))
self.assertIsNone(u.intersect(v))
self.assertIsNone(v.intersect(u))
def test_intercept_point_outside_line(self):
u = VectorLine(Vector(0, 0), Vector(2, -2))
v = Vector(3, -1)
self.assertIsNone(u.intersect(v))
self.assertIsNone(v.intersect(u))