def test_reflecting_a_vector_off_a_slanted_surface(): # Given v = Vector(0, -1, 0) n = Vector(sqrt(2) / 2, sqrt(2) / 2, 0) # When r = v.reflect(n) # Then assert r == Vector(1, 0, 0)
def test_reflecting_a_vector_approaching_at_45_degree(): # Given v = Vector(1, -1, 0) n = Vector(0, 1, 0) # When r = v.reflect(n) # Then assert r == Vector(1, 1, 0)