def test_uniformscale3d_from_vector():
scale = 2
h**o = np.array([[scale, 0, 0, 0],
[0, scale, 0, 0],
[0, 0, scale, 0],
[0, 0, 0, 1]])
uniform_scale = UniformScale(1, 3)
tr = uniform_scale.from_vector(scale)
assert_equal(tr.h_matrix, h**o)
