update to LensCalc API (rename from OperateDeflections)

- Update import in autolens/__init__.py
- tracer_util.py uses ag.LensCalc.from_mass_obj for fermat_potential_from
- Update point/fit/abstract.py and point/solver/shape_solver.py
- Update tests and docs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: 2 people

autolens/__init__.py

@@ -81,7 +81,7 @@
 )
 from autogalaxy.profiles.light.linear import LightProfileLinearObjFuncList
 from autogalaxy.operate.image import OperateImage
-from autogalaxy.operate.deflections import OperateDeflections
+from autogalaxy.operate.lens_calc import LensCalc
 from autogalaxy.quantity.dataset_quantity import DatasetQuantity
 from autogalaxy import convert
 

autolens/lens/tracer_util.py

@@ -354,7 +354,11 @@ def time_delays_from(
     D_dt_m = (1.0 + z_l) * (Dd_kpc * Ds_kpc / Dds_kpc) * kpc_in_m
 
     # Fermat potential (should be in arcsec^2 for this formula)
-    fermat_potential = galaxies.fermat_potential_from(grid=grid, xp=xp)
+    import autogalaxy as ag
+
+    fermat_potential = ag.LensCalc.from_mass_obj(galaxies).fermat_potential_from(
+        grid=grid, xp=xp
+    )
 
     # Final time delay in days
     return (D_dt_m / c) * fermat_potential * factor

autolens/point/fit/abstract.py

@@ -110,7 +110,7 @@ def magnifications_at_positions(self) -> aa.ArrayIrregular:
             if use_multi_plane
             else -1
         )
-        od = ag.OperateDeflections.from_tracer(
+        od = ag.LensCalc.from_tracer(
             tracer=self.tracer,
             use_multi_plane=use_multi_plane,
             plane_j=plane_j,

autolens/point/solver/shape_solver.py

@@ -274,7 +274,7 @@ def _filter_low_magnification(
         The points with an absolute magnification above the threshold.
         """
         points = self._xp.array(points)
-        magnifications = ag.OperateDeflections.from_mass_obj(
+        magnifications = ag.LensCalc.from_mass_obj(
             tracer
         ).magnification_2d_via_hessian_from(
             grid=aa.Grid2DIrregular(points).array, xp=self._xp

docs/api/source.rst

@@ -31,4 +31,4 @@ Operators
    :recursive:
 
    OperateImage
-   OperateDeflections
+   LensCalc

test_autolens/lens/test_operate.py

@@ -194,7 +194,7 @@ def test__operate_lens__sums_individual_quantities():
         cosmology=al.cosmo.Planck15(),
     )
 
-    einstein_mass = ag.OperateDeflections.from_mass_obj(
+    einstein_mass = ag.LensCalc.from_mass_obj(
         tracer
     ).einstein_mass_angular_from(grid=grid)
 

test_autolens/point/fit/test_abstract.py

@@ -23,7 +23,7 @@ def test__magnifications_at_positions__multi_plane_calculation(gal_x1_mp):
         tracer=tracer,
     )
 
-    od_0 = ag.OperateDeflections.from_tracer(tracer, use_multi_plane=True, plane_j=1)
+    od_0 = ag.LensCalc.from_tracer(tracer, use_multi_plane=True, plane_j=1)
     magnification_0 = abs(od_0.magnification_2d_via_hessian_from(grid=positions))
 
     assert fit_0.magnifications_at_positions[0] == magnification_0
@@ -36,7 +36,7 @@ def test__magnifications_at_positions__multi_plane_calculation(gal_x1_mp):
         tracer=tracer,
     )
 
-    od_1 = ag.OperateDeflections.from_tracer(tracer, use_multi_plane=True, plane_j=2)
+    od_1 = ag.LensCalc.from_tracer(tracer, use_multi_plane=True, plane_j=2)
     magnification_1 = abs(od_1.magnification_2d_via_hessian_from(grid=positions))
 
     assert fit_1.magnifications_at_positions[0] == magnification_1