ActsTrk::IFitterTool Class Reference

Generic interface class to fit xAOD::Uncalibrated measurements to (multi)-trajectories. More...

#include <IFitterTool.h>

Inheritance diagram for ActsTrk::IFitterTool:

Collaboration diagram for ActsTrk::IFitterTool:

Public Member Functions
	DeclareInterfaceID (IFitterTool, 1, 0)
virtual std::unique_ptr< MutableTrackContainer >	fit (const Seed &seed, const Acts::BoundTrackParameters &initialParams, const Acts::GeometryContext &tgContext, const Acts::MagneticFieldContext &mfContext, const Acts::CalibrationContext &calContext, const Acts::Surface &targetSurface) const =0
	Tries to fit a short-line track from an initial ITk/ID seed made up out of three spacepoints. More...
virtual std::unique_ptr< MutableTrackContainer >	fit (const std::vector< const xAOD::UncalibratedMeasurement * > &measList, const Acts::BoundTrackParameters &initialParams, const Acts::GeometryContext &tgContext, const Acts::MagneticFieldContext &mfContext, const Acts::CalibrationContext &calContext, const Acts::Surface *targetSurface=nullptr) const =0
	Attempt to fit a trajectory from a list of uncalibrated measurements. More...
virtual StatusCode	fit (const EventContext &ctx, const TrackContainer::ConstTrackProxy &track, MutableTrackContainer &trackContainer, const Acts::PerigeeSurface &pSurface) const =0

Detailed Description

Generic interface class to fit xAOD::Uncalibrated measurements to (multi)-trajectories.

Depending on the fitter in use, the methods either construct a single track trajectory or a bunch of trajectories sharing subsets of measurements with each other. By convention, the creation of the returned trajectory container is not guaranteed and usually the fitters return nullptrs in case of fit failures.

Definition at line 27 of file IFitterTool.h.

Member Function Documentation

DeclareInterfaceID()

ActsTrk::IFitterTool::DeclareInterfaceID	(	IFitterTool	,
		1	,
		0
	)

fit() [1/3]

virtual StatusCode ActsTrk::IFitterTool::fit ( const EventContext &  ctx, const TrackContainer::ConstTrackProxy &  track, MutableTrackContainer &  trackContainer, const Acts::PerigeeSurface &  pSurface  ) const

pure virtual

fit() [2/3]

virtual std::unique_ptr<MutableTrackContainer> ActsTrk::IFitterTool::fit ( const Seed &  seed, const Acts::BoundTrackParameters &  initialParams, const Acts::GeometryContext &  tgContext, const Acts::MagneticFieldContext &  mfContext, const Acts::CalibrationContext &  calContext, const Acts::Surface &  targetSurface  ) const

pure virtual

Tries to fit a short-line track from an initial ITk/ID seed made up out of three spacepoints.

For a better fit convergence, this method also takes an external estimate of the track parameters

Parameters

seed	Reference to the riplet of ITk/ID space points to fit.
initialParams	Rough parameter estimate used to start the fit
tgContext	Geometry context to fetch the aligned positions of each surface
mfContext	Reference to the magnetic field context having the ATLAS magnetic field wrapped
calContext	Reference to the CalibrationContext which is wrapping the pointer to the Gaudi-event context

Returns

: In case of fit-failure, a nullptr otherwise a unique_ptr to the fitted trajectories from the fit

fit() [3/3]

virtual std::unique_ptr< MutableTrackContainer > ActsTrk::IFitterTool::fit ( const std::vector< const xAOD::UncalibratedMeasurement * > &  measList, const Acts::BoundTrackParameters &  initialParams, const Acts::GeometryContext &  tgContext, const Acts::MagneticFieldContext &  mfContext, const Acts::CalibrationContext &  calContext, const Acts::Surface *  targetSurface = nullptr  ) const

pure virtual

Attempt to fit a trajectory from a list of uncalibrated measurements.

The measurements need to be sorted such that the associated surfaces are passed in consecutive order by the constructed trajectory. For a betterfit convergence, the method takes an external estimate of the track parameters.

Parameters

measList	List of pointers to the uncalibrated measurements to consider for fitting
initialParams	Rough parameter estimate used to start the fit
tgContext	Geometry context to fetch the aligned positions of each surface
mfContext	Reference to the magnetic field context having the ATLAS magnetic field wrapped
calContext	Reference to the CalibrationContext which is wrapping the pointer to the Gaudi-event context

Returns

: In case of fit-failure, a nullptr otherwise a unique_ptr to the fitted trajectories from the fit

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The documentation for this class was generated from the following file:

• IFitterTool.h