def METHOD_NAME(self):
    circle = make_circle(center=(0, 0, 0), axis=(0, 1, 0), radius=10)
    interpolator = RegionInterpolator(circle)
    xc, zc = interpolator.to_xz((0.5, 0.5))
    assert np.isclose(xc, 0)
    assert np.isclose(zc, 0)
    l0, l1 = interpolator.to_L(0, 0)
    assert np.isclose(l0, 0.5)
    assert np.isclose(l1, 0.5)