genfit::SpacepointMeasurement Class Reference

Class for measurements implementing a space point hit geometry. More...

#include <SpacepointMeasurement.h>

Inheritance diagram for genfit::SpacepointMeasurement:

Public Member Functions
	SpacepointMeasurement (int nDim=3)
	SpacepointMeasurement (const TVectorD &rawHitCoords, const TMatrixDSym &rawHitCov, int detId, int hitId, TrackPoint *trackPoint, bool weightedPlaneContruction=true, bool cutCov=true)
virtual	~SpacepointMeasurement ()
virtual AbsMeasurement *	clone () const
	Deep copy ctor for polymorphic class. More...
virtual SharedPlanePtr	constructPlane (const StateOnPlane &state) const
	Contruct the virtual detector plane. More...
virtual std::vector< MeasurementOnPlane * >	constructMeasurementsOnPlane (const StateOnPlane &state) const
virtual const AbsHMatrix *	constructHMatrix (const AbsTrackRep *) const
Public Member Functions inherited from genfit::AbsMeasurement
	AbsMeasurement ()
	AbsMeasurement (int nDims)
	AbsMeasurement (const TVectorD &rawHitCoords, const TMatrixDSym &rawHitCov, int detId, int hitId, TrackPoint *trackPoint)
virtual	~AbsMeasurement ()
TrackPoint *	getTrackPoint () const
void	setTrackPoint (TrackPoint *tp)
const TVectorD &	getRawHitCoords () const
const TMatrixDSym &	getRawHitCov () const
TVectorD &	getRawHitCoords ()
TMatrixDSym &	getRawHitCov ()
int	getDetId () const
int	getHitId () const
virtual bool	isLeftRightMeasurement () const
	If the AbsMeasurement is a wire hit, the left/right resolution will be used. More...
virtual int	getLeftRightResolution () const
unsigned int	getDim () const
void	setRawHitCoords (const TVectorD &coords)
void	setRawHitCov (const TMatrixDSym &cov)
void	setDetId (int detId)
void	setHitId (int hitId)
virtual void	Print (const Option_t *="") const

Protected Member Functions
void	initG ()
Protected Member Functions inherited from genfit::AbsMeasurement
	AbsMeasurement (const AbsMeasurement &)
	protect from calling copy c'tor from outside the class. Use clone() if you want a copy! More...

Additional Inherited Members
Protected Attributes inherited from genfit::AbsMeasurement
TVectorD	rawHitCoords_
TMatrixDSym	rawHitCov_
int	detId_
int	hitId_
TrackPoint *	trackPoint_
	Pointer to TrackPoint where the measurement belongs to. More...

Detailed Description

Class for measurements implementing a space point hit geometry.

Author

Christian Höppner (Technische Universität München, original author)

Sebastian Neubert (Technische Universität München, original author)

Johannes Rauch (Technische Universität München, original author)

For a space point the detector plane has to be defined with respect to a track representation. SpacepointMeasurement implements a scheme where the detectorplane is chosen perpendicular to the track. In a track fit, only two of the three coordinates of a space point are independent (the track is a one-dimensional object). Therefore the 3D data of the hit is used to define a proper detector plane into which the hit coordinates are then projected.

Definition at line 45 of file SpacepointMeasurement.h.

Constructor & Destructor Documentation

SpacepointMeasurement() [1/2]

genfit::SpacepointMeasurement::SpacepointMeasurement

(

int

nDim = 3

)

Referenced by clone().

SpacepointMeasurement() [2/2]

genfit::SpacepointMeasurement::SpacepointMeasurement	(	const TVectorD &	rawHitCoords,
		const TMatrixDSym &	rawHitCov,
		int	detId,
		int	hitId,
		TrackPoint *	trackPoint,
		bool	weightedPlaneContruction = true,
		bool	cutCov = true
	)

~SpacepointMeasurement()

virtual genfit::SpacepointMeasurement::~SpacepointMeasurement ( )

inlinevirtual

Definition at line 52 of file SpacepointMeasurement.h.

{ ; }

Member Function Documentation

clone()

virtual AbsMeasurement* genfit::SpacepointMeasurement::clone ( ) const

inlinevirtual

Deep copy ctor for polymorphic class.

Implements genfit::AbsMeasurement.

Reimplemented in genfit::ProlateSpacepointMeasurement.

Definition at line 54 of file SpacepointMeasurement.h.

References constructHMatrix(), constructMeasurementsOnPlane(), constructPlane(), initG(), and SpacepointMeasurement().

{ return new SpacepointMeasurement(*this); }

constructHMatrix()

virtual const AbsHMatrix* genfit::SpacepointMeasurement::constructHMatrix ( const AbsTrackRep *  ) const

virtual

Returns a new AbsHMatrix object. Caller must take ownership.

Implements genfit::AbsMeasurement.

Referenced by clone().

constructMeasurementsOnPlane()

virtual std::vector<MeasurementOnPlane *> genfit::SpacepointMeasurement::constructMeasurementsOnPlane ( const StateOnPlane &  state ) const

virtual

Construct MeasurementOnPlane on plane of the state and wrt the states TrackRep. The state will usually be the prediction or reference state, and has to be defined AT the measurement. The AbsMeasurement will be projected onto the plane. It's possible to make corrections to the coordinates here (e.g. by using the state coordinates). Usually the vector will contain only one element. But in the case of e.g. a WireMeasurement, it will be 2 (left and right).

Implements genfit::AbsMeasurement.

Referenced by clone().

constructPlane()

virtual SharedPlanePtr genfit::SpacepointMeasurement::constructPlane ( const StateOnPlane &  state ) const

virtual

Contruct the virtual detector plane.

Per default, the plane will be constructed such that it contains the measurement and POCA to the measurement in cartesian space. The plane is perpendicular to the track (at the POCA).

If weightedPlaneContruction_ is set, the POCA will be calculated in a space weighted with the inverse of the 3D covariance. E.g. if the covariance is very oblate, the plane will be almost defined by the covariance shape. If the covariance is very prolate, the behaviour will be very similar to the ProlateSpacepointHit.

Implements genfit::AbsMeasurement.

Reimplemented in genfit::ProlateSpacepointMeasurement.

Referenced by clone().

initG()

void genfit::SpacepointMeasurement::initG ( )

protected

Referenced by clone().

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

• SpacepointMeasurement.h