def test_reflection():
point = [1, 1, 1]
normal = [0, 0, 1]
R1 = Reflection(point, normal)
R2 = Transformation.from_matrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, -1, 2],
[0, 0, 0, 1]])
assert R1 == R2
def test_reflection_from_frame():
point = [1, 1, 1]
x = [1, 0, 0]
y = [0, 1, 0]
f = Frame(point, x, y)
R1 = Reflection.from_frame(f)
R2 = Transformation.from_matrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, -1, 2],
[0, 0, 0, 1]])
assert R1 == R2
def test_from_matrix():
t = Transformation().matrix
assert Transformation.from_matrix(t).matrix == t