JacobianEngine.hpp File Reference

#include "Acts/Utilities/detail/ReferenceWrapperAnyCompat.hpp"
#include "Acts/Definitions/Algebra.hpp"
#include "Acts/EventData/TrackParameters.hpp"
#include "Acts/Geometry/GeometryContext.hpp"
#include "Acts/Surfaces/Surface.hpp"

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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
FreeToBoundMatrix	Acts::detail::freeToCurvilinearJacobian (const Vector3 &direction)
	Evaluate the projection Jacobian from free to curvilinear parameters without transport jacobian.
BoundToFreeMatrix	Acts::detail::curvilinearToFreeJacobian (const Vector3 &direction)
	Evaluate the projection Jacobian from curvilinear to free parameters without transport jacobian.
ActsMatrix< 7, 8 >	Acts::detail::directionToAnglesJacobian (const Vector3 &direction)
	This function calculates the jacobian from a free parameterisation to a mixed one with angular representation.
ActsMatrix< 8, 7 >	Acts::detail::anglesToDirectionJacobian (const Vector3 &direction)
	This function calculates the jacobian from a free parameterisation to a mixed one with angular representation.
BoundMatrix	Acts::detail::boundToBoundTransportJacobian (const GeometryContext &geoContext, const FreeVector &freeParameters, const BoundToFreeMatrix &boundToFreeJacobian, const FreeMatrix &freeTransportJacobian, const FreeVector &freeToPathDerivatives, const Surface &surface)
	This function calculates the full transport jacobian from a bound curvilinear representation to a new bound representation.
BoundMatrix	Acts::detail::boundToCurvilinearTransportJacobian (const Vector3 &direction, const BoundToFreeMatrix &boundToFreeJacobian, const FreeMatrix &freeTransportJacobian, const FreeVector &freeToPathDerivatives)
	This function calculates the full jacobian from a given bound/curvilinear parameterisation from a surface to new curvilinear parameterisation.
BoundToFreeMatrix	Acts::detail::boundToFreeTransportJacobian (const BoundToFreeMatrix &boundToFreeJacobian, const FreeMatrix &freeTransportJacobian)
	This function calculates the full jacobian from a given bound/curvilinear parameterisation from a new free parameterisation.
FreeToBoundMatrix	Acts::detail::freeToBoundTransportJacobian (const GeometryContext &geoContext, const FreeVector &freeParameters, const ActsMatrix< 7, 8 > &directionToAnglesJacobian, const ActsMatrix< 8, 7 > &anglesToDirectionJacobian, const FreeMatrix &freeTransportJacobian, const FreeVector &freeToPathDerivatives, const Surface &surface)
	This function calculates the full jacobian from a given free parameterisation to a new curvilinear bound parameterisation.
FreeToBoundMatrix	Acts::detail::freeToCurvilinearTransportJacobian (const Vector3 &direction, const ActsMatrix< 7, 8 > &directionToAnglesJacobian, const ActsMatrix< 8, 7 > &anglesToDirectionJacobian, const FreeMatrix &freeTransportJacobian, const FreeVector &freeToPathDerivatives)
	This function calculates the full transport jacobian from a free parameterisation to a bound one. Since a variation of the start parameters within a given uncertainty would lead to a variation of the end parameters, these need to be propagated onto the target surface. This an approximated approach to treat the (assumed) small change.
FreeMatrix	Acts::detail::freeToFreeTransportJacobian (const ActsMatrix< 7, 8 > &directionToAnglesJacobian, const ActsMatrix< 8, 7 > &anglesToDirectionJacobian, const FreeMatrix &freeTransportJacobian)
	This function calculates the free transfport jacobian from a free parameterisation.