CovarianceEngine.cpp File Reference

#include "Acts/Propagator/detail/CovarianceEngine.hpp"
#include "Acts/Definitions/Common.hpp"
#include "Acts/Definitions/Tolerance.hpp"
#include "Acts/EventData/GenericBoundTrackParameters.hpp"
#include "Acts/EventData/GenericCurvilinearTrackParameters.hpp"
#include "Acts/EventData/detail/CorrectedTransformationFreeToBound.hpp"
#include "Acts/EventData/detail/TransformationBoundToFree.hpp"
#include "Acts/EventData/detail/TransformationFreeToBound.hpp"
#include "Acts/Utilities/AlgebraHelpers.hpp"
#include "Acts/Utilities/Result.hpp"
#include <algorithm>
#include <cmath>
#include <optional>
#include <system_error>
#include <type_traits>
#include <utility>

Include dependency graph for CovarianceEngine.cpp:

Go to the source code of this file.

Namespaces
namespace	Acts
	Acts includes to create all necessary definitions.
namespace	Acts::detail
	These functions perform the transport of a covariance matrix using given Jacobians. The required data is provided by the stepper object with some additional data. Since this is a purely algebraic problem the calculations are identical for StraightLineStepper and EigenStepper. As a consequence the methods can be located in a separate file.

Functions
Result< std::tuple < BoundTrackParameters, BoundMatrix, double > >	Acts::detail::boundState (const GeometryContext &geoContext, BoundSquareMatrix &covarianceMatrix, BoundMatrix &jacobian, FreeMatrix &transportJacobian, FreeVector &derivatives, BoundToFreeMatrix &jacToGlobal, FreeVector &parameters, const ParticleHypothesis &particleHypothesis, bool covTransport, double accumulatedPath, const Surface &surface, const FreeToBoundCorrection &freeToBoundCorrection=FreeToBoundCorrection(false))
	It does not check if the transported state is at the surface, this needs to be guaranteed by the propagator.
std::tuple < CurvilinearTrackParameters, BoundMatrix, double >	Acts::detail::curvilinearState (BoundSquareMatrix &covarianceMatrix, BoundMatrix &jacobian, FreeMatrix &transportJacobian, FreeVector &derivatives, BoundToFreeMatrix &jacToGlobal, const FreeVector &parameters, const ParticleHypothesis &particleHypothesis, bool covTransport, double accumulatedPath)
	This creates a curvilinear state.
void	Acts::detail::transportCovarianceToBound (const GeometryContext &geoContext, BoundSquareMatrix &boundCovariance, BoundMatrix &fullTransportJacobian, FreeMatrix &freeTransportJacobian, FreeVector &freeToPathDerivatives, BoundToFreeMatrix &boundToFreeJacobian, FreeVector &freeParameters, const Surface &surface, const FreeToBoundCorrection &freeToBoundCorrection=FreeToBoundCorrection(false))
	Method for on-demand covariance transport of a bound/curvilinear to another bound representation.
void	Acts::detail::transportCovarianceToCurvilinear (BoundSquareMatrix &boundCovariance, BoundMatrix &fullTransportJacobian, FreeMatrix &freeTransportJacobian, FreeVector &freeToPathDerivatives, BoundToFreeMatrix &boundToFreeJacobian, const Vector3 &direction)
	Method for on-demand covariance transport of a bound/curvilinear to a new curvilinear representation.