Convert to bound state also on empty sensitive surfaces.

This allows to merge retrieval of source link ranges, measurement
selection and track state creation into one unit.

This increases the computational effort slightly for empty, sensitive
surfaces, since the computation of bound states is slightly more
demanding than the computation of curvilinear states, but for complex
events like HL-LHC events the regression was not measurable.

This changes track states on surfaces without measurements, because the
parameterisation for such states changes from curvilinear to bound.

Core/include/Acts/TrackFinding/CombinatorialKalmanFilter.hpp

@@ -747,7 +747,7 @@ class CombinatorialKalmanFilter {
       }
 
       // Transport the covariance to the surface
-      if (isHole || isMaterialOnly) {
+      if (isMaterialOnly) {
         stepper.transportCovarianceToCurvilinear(state.stepping);
       } else {
         stepper.transportCovarianceToBound(state.stepping, *surface);

Examples/Python/tests/root_file_hashes.txt

@@ -33,21 +33,21 @@ test_digitization_example_input[smeared]__particles.root: 669d0304eb8bcf244aa627
 test_digitization_example_input[smeared]__measurements.root: 243c2f69b7b0db9dbeaa7494d4ea0f3dd1691dc90f16e10df6c0491ff4dc7d62
 test_digitization_example_input[geometric]__particles.root: 669d0304eb8bcf244aa627809a117944e5e3b994fdfcfb8710f2b9a8f9a62d3b
 test_digitization_example_input[geometric]__measurements.root: 63ec81635979058fb8976f94455bf490cf92b7b142c4a05cc39de6225f5de2fb
-test_ckf_tracks_example[generic-full_seeding]__trackstates_ckf.root: ec6487dfca5f944cfacfef903eb4b9a97f8f6a668d07f77d0c3ec45c68054824
+test_ckf_tracks_example[generic-full_seeding]__trackstates_ckf.root: f0b4c6018d0b2641024b88f6ac717f16a2ca486007c2e9bf166c85dc5e161739
 test_ckf_tracks_example[generic-full_seeding]__tracksummary_ckf.root: 84085bcc63562cfb1b4c70d2665bf06938ac559bb40c2b01c076e1d8b5c7b43b
 test_ckf_tracks_example[generic-full_seeding]__performance_seeding_trees.root: 0e0676ffafdb27112fbda50d1cf627859fa745760f98073261dcf6db3f2f991e
-test_ckf_tracks_example[generic-truth_estimated]__trackstates_ckf.root: 8e15cceeef4b115708596702988925b7506d39e0531dc5534636ec411a9b4ca2
+test_ckf_tracks_example[generic-truth_estimated]__trackstates_ckf.root: 1d3198e1926cf2c568d1c854c3ec7d638ed296163ac3cd1ff68273ab21a12657
 test_ckf_tracks_example[generic-truth_estimated]__tracksummary_ckf.root: 8e0116c656e1cc67446d54a5205c4a3e2f4c1fc90fa551bb608c881877dfa0ab
 test_ckf_tracks_example[generic-truth_estimated]__performance_seeding.root: 1facb05c066221f6361b61f015cdf0918e94d9f3fce2269ec7b6a4dffeb2bc7e
-test_ckf_tracks_example[generic-truth_smeared]__trackstates_ckf.root: 82a6744980553e6274df78eea15f0dec22676b1c04e14afc3828bff9bbf5e1b1
+test_ckf_tracks_example[generic-truth_smeared]__trackstates_ckf.root: d043c7d28772954fa2c1e4b320384c26589586bc4cdd95e0506fab59a37135d7
 test_ckf_tracks_example[generic-truth_smeared]__tracksummary_ckf.root: 06d6ae1d05cb611b19df3c59531997c9b0108f5ef6027d76c4827bd2d9edb921
-test_ckf_tracks_example[odd-full_seeding]__trackstates_ckf.root: 53a96c225ed78bd7da1491ae3ff4173f0e6c8bffe27e3eab1ab7adfe55426080
+test_ckf_tracks_example[odd-full_seeding]__trackstates_ckf.root: d5388653cf5613e765e6ce1e5afe94d94ff5182d7734e75251bc415f0192f444
 test_ckf_tracks_example[odd-full_seeding]__tracksummary_ckf.root: 2a98d8ec8fae97e18f4661580b71885f558d7222f94bca5edfbf5cdb595021f7
 test_ckf_tracks_example[odd-full_seeding]__performance_seeding_trees.root: 43c58577aafe07645e5660c4f43904efadf91d8cda45c5c04c248bbe0f59814f
-test_ckf_tracks_example[odd-truth_estimated]__trackstates_ckf.root: 7ec5f4b24fa69bfc9d812a6f224d74d36df2d0a42aef791ae0116f309d6f1433
+test_ckf_tracks_example[odd-truth_estimated]__trackstates_ckf.root: 6ed8f0db3f3e7f1b71b6d9da7371597d4fb5f95b3d2f2ab18be43d1763ce41c1
 test_ckf_tracks_example[odd-truth_estimated]__tracksummary_ckf.root: 1eaae038ced2cc5c757480ca42eab60cdaff14d812c34a807a841267d6bfa110
 test_ckf_tracks_example[odd-truth_estimated]__performance_seeding.root: 1a36b7017e59f1c08602ef3c2cb0483c51df248f112e3780c66594110719c575
-test_ckf_tracks_example[odd-truth_smeared]__trackstates_ckf.root: 35a65e15a6f479f628a96f56ee78e1ac371d71a686ee0c974944d681499fe6bd
+test_ckf_tracks_example[odd-truth_smeared]__trackstates_ckf.root: a519202b1233d8e7aac3c9038ee6e16b5d3cdfe2027212d6900e00ee0fcec21d
 test_ckf_tracks_example[odd-truth_smeared]__tracksummary_ckf.root: 3e257de624674fa9a19dcc72598c78c29a52633821acaa56dc2aa39a1395f1b5
 test_vertex_fitting_reading[Truth-False-100]__performance_vertexing.root: 76ef6084d758dfdfc0151ddec2170e12d73394424e3dac4ffe46f0f339ec8293
 test_vertex_fitting_reading[Iterative-False-100]__performance_vertexing.root: 60372210c830a04f95ceb78c6c68a9b0de217746ff59e8e73053750c837b57eb