Calibrator class that links the legacy Trk::MeasurementBase objects with the Acts MultiTrajectory track state proxies without applying any further calibrating the measurement. More...

#include <TrkMeasurementCalibrator.h>

Inheritance diagram for ActsTrk::detail::TrkMeasurementCalibrator:

Collaboration diagram for ActsTrk::detail::TrkMeasurementCalibrator:

Public Types
enum class	ProjectorType { e1DimNoTime = 0 , e1DimRotNoTime = 1 , e2DimNoTime = 2 , e1DimWithTime = 3 , e1DimRotWithTime = 4 , e2DimWithTime = 5 }
	Enum encoding the possible projectors used in ATLAS. More...
using	SourceLink_t
	Encode the source links supported by the Calibrator class as a variant of the measurement class type pointer used within Athena.

Public Member Functions
	TrkMeasurementCalibrator ()=default
	Default constructor.
template<Acts::TrackStateProxyConcept proxy_t>
void	calibrate (const Acts::GeometryContext &gctx, const Acts::CalibrationContext &cctx, const Acts::SourceLink &sl, proxy_t trackState) const
	Calibrator delegate implementation to calibrate the ActsTrk fit from Trk::MeasurementBase objects.
template<std::size_t Dim, Acts::TrackStateProxyConcept proxy_t, typename pos_t, typename cov_t>
void	setState (const ProjectorType projector, const pos_t &locpos, const cov_t &cov, Acts::SourceLink link, proxy_t &trackState) const
	Copy the local position & covariance into the Acts track state proxy.

Static Public Member Functions
static const Trk::MeasurementBase *	unpack (const Acts::SourceLink &sl)
	Unpacks the Acts::SourceLink to a Trk measurement.
static SourceLinkType	getType (const Acts::SourceLink &sl)
	Returns the enumeration corresponding to the object type cached within the Acts::SourceLink.
static SourceLink_t	unpackBase (const Acts::SourceLink &sl)
	Unpack the SourceLink_t from the passed Acts source link.
template<Acts::PointerConcept Ptr_t>
static Acts::SourceLink	pack (const Ptr_t &measurement)
	Pack the measurement type pointer to an Acts::SourceLink including the intermediate conversion into a SourceLink_t.
template<Acts::PointerConcept Ptr_t>
static void	pack (const std::vector< Ptr_t > &measList, std::vector< Acts::SourceLink > &targetSL)
	Converts a vector measurement pointers to Acts::SourceLinks.

Protected Member Functions
template<std::size_t Dim, Acts::TrackStateProxyConcept proxy_t>
void	prepareCalibratedState (const ProjectorType projector, Acts::SourceLink link, proxy_t &trackState) const
	Queries the track proxy to allocate memory for the incoming calibration object.

Static Private Attributes
static constexpr std::array< Acts::BoundSubspaceIndices, 6 >	s_boundSpaceIndices
	Array to map the Projector types to the bound index configurations used by the ATLAS detector measurements.

Detailed Description

Calibrator class that links the legacy Trk::MeasurementBase objects with the Acts MultiTrajectory track state proxies without applying any further calibrating the measurement.

Definition at line 18 of file TrkMeasurementCalibrator.h.

Member Typedef Documentation

◆ SourceLink_t

using ActsTrk::detail::MeasurementCalibratorBase::SourceLink_t

inherited

Initial value:

std::variant<std::monostate,
                                     const xAOD::UncalibratedMeasurement*,
                                     const Trk::PrepRawData*,
                                     const Trk::MeasurementBase*>

Encode the source links supported by the Calibrator class as a variant of the measurement class type pointer used within Athena.

The std::monostate is used to encode nullptrs or not yet supported types

Definition at line 53 of file MeasurementCalibratorBase.h.

Member Enumeration Documentation

◆ ProjectorType

enum class ActsTrk::detail::MeasurementCalibratorBase::ProjectorType

stronginherited

Enum encoding the possible projectors used in ATLAS.

Their integer representations correspond to the element index in the s_boundSpaceIndices member

Enumerator
e1DimNoTime
e1DimRotNoTime	Project out solely the locX (Applies to Itk strips, Rpc, Tgc, sTgc, Mm).
e2DimNoTime	Project out solely the locY - Complementary projector if the strip plane is rotated (Applies to Itk endcap strips, Rpc, Tgc, sTgc).
e1DimWithTime	Project out the two spatial coordinates - (Applies to ITk pixel, BI-Rpc, sTgc pad).
e1DimRotWithTime	Project out the locX & time coordinate - (Applies to Rpc, Tgc, Mm, sTgc).
e2DimWithTime	Project out the locY & time coordinate - (Applies to Rpc, Tgc, sTgc).

Definition at line 41 of file MeasurementCalibratorBase.h.

                            {
        e1DimNoTime = 0,      
        e1DimRotNoTime = 1,   
        e2DimNoTime = 2,      
        e1DimWithTime = 3,    
        e1DimRotWithTime = 4, 
        e2DimWithTime = 5,    
    };

Constructor & Destructor Documentation

◆ TrkMeasurementCalibrator()

ActsTrk::detail::TrkMeasurementCalibrator::TrkMeasurementCalibrator ( )

default

Default constructor.

Member Function Documentation

◆ calibrate()

template<Acts::TrackStateProxyConcept proxy_t>

void ActsTrk::detail::TrkMeasurementCalibrator::calibrate	(	const Acts::GeometryContext &	gctx,
		const Acts::CalibrationContext &	cctx,
		const Acts::SourceLink &	sl,
		proxy_t	trackState ) const

Calibrator delegate implementation to calibrate the ActsTrk fit from Trk::MeasurementBase objects.

Template Parameters

trajectory_t Tepmlate parameter of the underlying MultTrajectory container backend

Parameters

gctx	Geometry context to access the alignment of the surface
cctx	Calibration context to access the calibration constants from the conditions store
sl	Reference to the packed SourceLink
trackState	Reference to the multi trajectory track state to fill

◆ getType()

SourceLinkType ActsTrk::detail::MeasurementCalibratorBase::getType ( const Acts::SourceLink & sl )

staticinherited

Returns the enumeration corresponding to the object type cached within the Acts::SourceLink.

The SourceLink must have been created by a MeasurementCalibrator to ensure that the underlying variant is cached. If the variant is a monostate, nTypes is returned

Parameters

sl	Reference to the source link to unpack.

◆ pack() [1/2]

template<Acts::PointerConcept Ptr_t>

Acts::SourceLink ActsTrk::detail::MeasurementCalibratorBase::pack ( const Ptr_t & measurement )

staticinherited

Pack the measurement type pointer to an Acts::SourceLink including the intermediate conversion into a SourceLink_t.

Nullptrs are converted to a std::monostate.

Parameters

measurement Pointer to the measurement to transform into a SourceLInk

◆ pack() [2/2]

template<Acts::PointerConcept Ptr_t>

void ActsTrk::detail::MeasurementCalibratorBase::pack	(	const std::vector< Ptr_t > &	measList,
		std::vector< Acts::SourceLink > &	targetSL )

staticinherited

Converts a vector measurement pointers to Acts::SourceLinks.

Parameters

measList	The list of measurement pointers for conversion
targetSL	The allocated SourceLink vectors to which the Acts::SourceLink objects are appended.

◆ prepareCalibratedState()

template<std::size_t Dim, Acts::TrackStateProxyConcept proxy_t>

void ActsTrk::detail::MeasurementCalibratorBase::prepareCalibratedState	(	const ProjectorType	projector,
		Acts::SourceLink	link,
		proxy_t &	trackState ) const

protectedinherited

Queries the track proxy to allocate memory for the incoming calibration object.

Defines the projector indices and allocates the source link to the state

Parameters

projector	Projector configuration of the measurement
link	Source link to associate with the state
trackState	Refrence to the track state proxy to write.

◆ setState()

template<std::size_t Dim, Acts::TrackStateProxyConcept proxy_t, typename pos_t, typename cov_t>

void ActsTrk::detail::MeasurementCalibratorBase::setState	(	const ProjectorType	projector,
		const pos_t &	locpos,
		const cov_t &	cov,
		Acts::SourceLink	link,
		proxy_t &	trackState ) const

inherited

Copy the local position & covariance into the Acts track state proxy.

Template Parameters

Dim	Dimension of the measurement
trajectory_t	Data type of the track state proxy backend
pos_t	Data type of the [Dim x 1] position vector
cov_t	Data type of the [Dim x Dim] covariance matrix

Parameters

projector	Projector configuration of the measurement
locpos	Calibrated local postion
cov	Calibrated local covariance
link	Source link to associate with the state
trackState	Refrence to the track state proxy to write.

◆ unpack()

const Trk::MeasurementBase * ActsTrk::detail::TrkMeasurementCalibrator::unpack ( const Acts::SourceLink & sl )

static

Unpacks the Acts::SourceLink to a Trk measurement.

Definition at line 8 of file TrkMeasurementCalibrator.cxx.

                                                                                       {        
        const SourceLink_t& meas = sl.template get<SourceLink_t>();
        return std::holds_alternative<const Trk::MeasurementBase*>(meas) ? 
               std::get<const Trk::MeasurementBase*>(meas) : nullptr;
    }

◆ unpackBase()

SourceLink_t ActsTrk::detail::MeasurementCalibratorBase::unpackBase ( const Acts::SourceLink & sl )

staticinherited

Unpack the SourceLink_t from the passed Acts source link.

Parameters

sl	Reference to the source link to unpack.

Member Data Documentation

◆ s_boundSpaceIndices

std::array<Acts::BoundSubspaceIndices, 6> ActsTrk::detail::MeasurementCalibratorBase::s_boundSpaceIndices

staticconstexprprivateinherited

Initial value:

{
        Acts::BoundSubspaceIndices{Acts::eBoundLoc0}, 
        Acts::BoundSubspaceIndices{Acts::eBoundLoc1}, 
        Acts::BoundSubspaceIndices{Acts::eBoundLoc0, Acts::eBoundLoc1}, 
        Acts::BoundSubspaceIndices{Acts::eBoundLoc0, Acts::eBoundTime}, 
        Acts::BoundSubspaceIndices{Acts::eBoundLoc1, Acts::eBoundTime}, 
        Acts::BoundSubspaceIndices{Acts::eBoundLoc0, Acts::eBoundLoc1, Acts::eBoundTime} 
    }

Array to map the Projector types to the bound index configurations used by the ATLAS detector measurements.

Definition at line 115 of file MeasurementCalibratorBase.h.

                                                                              {
        Acts::BoundSubspaceIndices{Acts::eBoundLoc0}, // One dimenion without time
        Acts::BoundSubspaceIndices{Acts::eBoundLoc1}, // Complementary one dimension without time
        Acts::BoundSubspaceIndices{Acts::eBoundLoc0, Acts::eBoundLoc1}, 
        Acts::BoundSubspaceIndices{Acts::eBoundLoc0, Acts::eBoundTime}, // One dimension with time
        Acts::BoundSubspaceIndices{Acts::eBoundLoc1, Acts::eBoundTime}, // Complementary one dimension with time
        Acts::BoundSubspaceIndices{Acts::eBoundLoc0, Acts::eBoundLoc1, Acts::eBoundTime} 
    };

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

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Static Private Attributes

Detailed Description

Member Typedef Documentation

◆ SourceLink_t

Member Enumeration Documentation

◆ ProjectorType

Constructor & Destructor Documentation

◆ TrkMeasurementCalibrator()

Member Function Documentation

◆ calibrate()

◆ getType()

◆ pack() [1/2]

◆ pack() [2/2]

◆ prepareCalibratedState()

◆ setState()

◆ unpack()

◆ unpackBase()

Member Data Documentation

◆ s_boundSpaceIndices