def test_sis_ray_shooting(self):
z_source = 1.5
z_lens = 0.5
lens_model_list = ['SIS']
redshift_list = [z_lens]
lensModelMutli = MultiPlane(z_source=z_source,
lens_model_list=lens_model_list,
lens_redshift_list=redshift_list)
lensModel = LensModel(lens_model_list=lens_model_list)
kwargs_lens = [{'theta_E': 1., 'center_x': 0, 'center_y': 0}]
beta_x, beta_y = lensModelMutli.ray_shooting(1., 0., kwargs_lens)
beta_x_single, beta_y_single = lensModel.ray_shooting(
1, 0., kwargs_lens)
npt.assert_almost_equal(beta_x, beta_x_single, decimal=8)
npt.assert_almost_equal(beta_y, beta_y_single, decimal=8)
x, y = np.array([1.]), np.array([2.])
beta_x, beta_y = lensModelMutli.ray_shooting(x, y, kwargs_lens)
beta_x_single, beta_y_single = lensModel.ray_shooting(
x, y, kwargs_lens)
npt.assert_almost_equal(beta_x, beta_x_single, decimal=8)
npt.assert_almost_equal(beta_y, beta_y_single, decimal=8)
def test_random_ordering(self):
z_source = 1.5
lens_model_list = ['SIS', 'SIS', 'SIS']
sis1 = {'theta_E': 1., 'center_x': 0, 'center_y': 0}
sis2 = {'theta_E': .2, 'center_x': 0.5, 'center_y': 0}
sis3 = {'theta_E': .1, 'center_x': 0, 'center_y': 0.5}
z1 = 0.1
z2 = 0.5
z3 = 0.7
redshift_list = [z1, z2, z3]
kwargs_lens = [sis1, sis2, sis3]
lensModel = MultiPlane(z_source=z_source,
lens_model_list=lens_model_list,
lens_redshift_list=redshift_list)
beta_x_1, beta_y_1 = lensModel.ray_shooting(1., 0., kwargs_lens)
redshift_list = [z3, z2, z1]
kwargs_lens = [sis3, sis2, sis1]
lensModel = MultiPlane(z_source=z_source,
lens_model_list=lens_model_list,
lens_redshift_list=redshift_list)
beta_x_2, beta_y_2 = lensModel.ray_shooting(1., 0., kwargs_lens)
npt.assert_almost_equal(beta_x_1, beta_x_2, decimal=8)
npt.assert_almost_equal(beta_y_1, beta_y_2, decimal=8)
def test_sis_ray_tracing(self):
z_source = 1.5
lens_model_list = ['SIS']
redshift_list = [0.5]
lensModelMutli = MultiPlane(z_source=z_source,
lens_model_list=lens_model_list,
lens_redshift_list=redshift_list)
lensModel = LensModel(lens_model_list=lens_model_list)
kwargs_lens = [{'theta_E': 1, 'center_x': 0, 'center_y': 0}]
beta_x_simple, beta_y_simple = lensModel.ray_shooting(
1, 0, kwargs_lens)
beta_x_multi, beta_y_multi = lensModelMutli.ray_shooting(
1, 0, kwargs_lens)
npt.assert_almost_equal(beta_x_simple, beta_x_multi, decimal=10)
npt.assert_almost_equal(beta_y_simple, beta_y_multi, decimal=10)
npt.assert_almost_equal(beta_x_simple, 0, decimal=10)
npt.assert_almost_equal(beta_y_simple, 0, decimal=10)
def test_pseudo_multiplane(self):
z_source = 1.5
lens_model_list = ['SIS', 'SIS']
sis1 = {'theta_E': 1., 'center_x': 0, 'center_y': 0}
sis2 = {'theta_E': .2, 'center_x': 0.5, 'center_y': 0}
z1 = 0.5
z2 = 0.5
redshift_list = [z1, z2]
kwargs_lens = [sis1, sis2]
lensModelMulti = MultiPlane(z_source=z_source,
lens_model_list=lens_model_list,
lens_redshift_list=redshift_list)
lensModelSingle = LensModel(lens_model_list=lens_model_list)
beta_x, beta_y = lensModelMulti.ray_shooting(1, 1, kwargs_lens)
beta_x_single, beta_y_single = lensModelSingle.ray_shooting(
1, 1, kwargs_lens)
npt.assert_almost_equal(beta_x, beta_x_single, decimal=10)
npt.assert_almost_equal(beta_y, beta_y_single, decimal=10)
def test_ray_shooting_partial_2(self):
z_source = 1.5
lens_model_list = ['SIS', 'SIS', 'SIS', 'SIS']
sis1 = {'theta_E': 0.4, 'center_x': 0, 'center_y': 0}
sis2 = {'theta_E': .2, 'center_x': 0.5, 'center_y': 0}
sis3 = {'theta_E': .1, 'center_x': 0, 'center_y': 0.5}
sis4 = {'theta_E': 0.5, 'center_x': 0.1, 'center_y': 0.3}
lens_model_list_macro = ['SIS']
kwargs_macro = [{'theta_E': 1, 'center_x': 0, 'center_y': 0}]
zmacro = 0.5
z1 = 0.1
z2 = 0.5
z3 = 0.5
z4 = 0.7
redshift_list = [z1, z2, z3, z4]
kwargs_lens = [sis1, sis2, sis3, sis4]
kwargs_lens_full = kwargs_macro + kwargs_lens
lensModel_full = MultiPlane(
z_source=z_source,
lens_model_list=lens_model_list_macro + lens_model_list,
lens_redshift_list=[zmacro] + redshift_list)
lensModel_macro = MultiPlane(z_source=z_source,
lens_model_list=lens_model_list_macro,
lens_redshift_list=[zmacro])
lensModel = MultiPlane(z_source=z_source,
lens_model_list=lens_model_list,
lens_redshift_list=redshift_list)
theta_x, theta_y = 1., 1.
x_subs, y_subs, alpha_x_subs, alpha_y_subs = lensModel.ray_shooting_partial(
x=0,
y=0,
alpha_x=theta_x,
alpha_y=theta_y,
z_start=0,
z_stop=zmacro,
kwargs_lens=kwargs_lens)
x_out, y_out, alpha_x_out, alpha_y_out = lensModel_macro.ray_shooting_partial(
x_subs,
y_subs,
alpha_x_subs,
alpha_y_subs,
zmacro,
zmacro,
kwargs_macro,
include_z_start=True)
npt.assert_almost_equal(x_subs, x_out)
npt.assert_almost_equal(y_subs, y_out)
x_full, y_full, alpha_x_full, alpha_y_full = lensModel_full.ray_shooting_partial(
0, 0, theta_x, theta_y, 0, zmacro, kwargs_lens_full)
npt.assert_almost_equal(x_full, x_out)
npt.assert_almost_equal(y_full, y_out)
npt.assert_almost_equal(alpha_x_full, alpha_x_out)
npt.assert_almost_equal(alpha_y_full, alpha_y_out)
x_src, y_src, _, _ = lensModel_full.ray_shooting_partial(
x=x_out,
y=y_out,
alpha_x=alpha_x_out,
alpha_y=alpha_y_out,
z_start=zmacro,
z_stop=z_source,
kwargs_lens=kwargs_lens_full)
beta_x, beta_y = lensModel.co_moving2angle_source(x_src, y_src)
beta_x_true, beta_y_true = lensModel_full.ray_shooting(
theta_x, theta_y, kwargs_lens_full)
npt.assert_almost_equal(beta_x, beta_x_true, decimal=8)
npt.assert_almost_equal(beta_y, beta_y_true, decimal=8)