def METHOD_NAME(self):
    line = make_polygon([[5, 10], [0, 0], [-10, 10]])
    interpolator = PathInterpolator(line)
    x05, z05 = interpolator.to_xz(0.5)
    assert np.isclose(x05, 7.5)
    assert np.isclose(z05, 0)
    l05 = interpolator.to_L(7.5, 0)
    assert np.isclose(l05, 0.5)