revert and improve subtractBoundParameters

acts-project · Oct 21, 2024 · ce0ad9f · ce0ad9f
1 parent f55210a
commit ce0ad9f
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/Core/include/Acts/EventData/TrackParameterHelpers.hpp b/Core/include/Acts/EventData/TrackParameterHelpers.hpp
@@ -73,7 +73,10 @@ inline BoundVector addBoundParameters(const BoundVector& lhs,
 /// @return The difference of the bound parameters
 inline BoundVector subtractBoundParameters(const BoundVector& lhs,
                                            const BoundVector& rhs) {
-  return normalizeBoundParameters(lhs - rhs);
+  BoundVector result = lhs - rhs;
+  result[eBoundPhi] = detail::radian_sym(result[eBoundPhi]);
+  result[eBoundTheta] = detail::radian_sym(result[eBoundTheta]);
+  return result;
 }
 
 }  // namespace Acts