genfit::WireMeasurementNew Class Reference

Class for measurements in wire detectors (Straw tubes and drift chambers) which do not measure the coordinate along the wire. More...

#include <WireMeasurementNew.h>

Inheritance diagram for genfit::WireMeasurementNew:

Public Member Functions
	WireMeasurementNew ()
	WireMeasurementNew (double driftDistance, double driftDistanceError, const TVector3 &endPoint1, const TVector3 &endPoint2, int detId, int hitId, TrackPoint *trackPoint)
virtual	~WireMeasurementNew ()
virtual WireMeasurementNew *	clone () const
	Deep copy ctor for polymorphic class. More...
virtual SharedPlanePtr	constructPlane (const StateOnPlane &state) const
virtual std::vector < MeasurementOnPlane * >	constructMeasurementsOnPlane (const StateOnPlane &state) const
virtual const AbsHMatrix *	constructHMatrix (const AbsTrackRep *) const
void	setWireEndPoints (const TVector3 &endPoint1, const TVector3 &endPoint2)
void	setMaxDistance (double d)
void	setLeftRightResolution (int lr)
virtual bool	isLeftRigthMeasurement () const
double	getMaxDistance ()
int	getLeftRightResolution () const
TrackPoint *	getTrackPoint () const
void	setTrackPoint (TrackPoint *tp)
const TVectorD &	getRawHitCoords () const
TVectorD &	getRawHitCoords ()
const TMatrixDSym &	getRawHitCov () const
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...
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 Attributes
double	wireEndPoint1_ [3]
double	wireEndPoint2_ [3]
	Wire end point 1 (X, Y, Z) More...
double	maxDistance_
	Wire end point 2 (X, Y, Z) More...
double	leftRight_
TVectorD	rawHitCoords_
TMatrixDSym	rawHitCov_
int	detId_
int	hitId_
TrackPoint *	trackPoint_
	Pointer to TrackPoint where the measurement belongs to. More...

Detailed Description

Class for measurements in wire detectors (Straw tubes and drift chambers) which do not measure the coordinate along the wire.

Author

Tobias Schlüter

This is similar to WireMeasurement, but since WireMeasurement stores a 7x7 covariance matrix for what is a one-dimensional measurement, this class is preferable. Protected inheritance of rawHitCoords_ and rawHitCov_ makes it impossible to rewrite WireMeasurement, as subclasses will access these members.

This hit class is not valid for arbitrary choices of plane orientation: to use it you MUST choose a plane described by u and v axes with v coincident with the wire (and u orthogonal to it, obviously). The hit will be described by 7 coordinates: w_x1, w_y1, w_z1, w_x2, w_y2, w_z2, rdrift where w_ji (with j = x, y, z and i = 1, 2) are the wire extremities coordinates; rdrift = distance from the wire (u coordinate in the plane)

Definition at line 56 of file WireMeasurementNew.h.

Constructor & Destructor Documentation

genfit::WireMeasurementNew::WireMeasurementNew

(

)

Referenced by clone().

genfit::WireMeasurementNew::WireMeasurementNew	(	double	driftDistance,
		double	driftDistanceError,
		const TVector3 &	endPoint1,
		const TVector3 &	endPoint2,
		int	detId,
		int	hitId,
		TrackPoint *	trackPoint
	)

virtual genfit::WireMeasurementNew::~WireMeasurementNew ( )

inlinevirtual

Definition at line 62 of file WireMeasurementNew.h.

{;}

Member Function Documentation

virtual WireMeasurementNew* genfit::WireMeasurementNew::clone ( ) const

inlinevirtual

Deep copy ctor for polymorphic class.

Implements genfit::AbsMeasurement.

Definition at line 64 of file WireMeasurementNew.h.

References WireMeasurementNew().

{return new WireMeasurementNew(*this);}

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

virtual

Returns a new AbsHMatrix object. Caller must take ownership.

Implements genfit::AbsMeasurement.

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

virtual

Hits with a small drift distance get a higher weight, whereas hits with big drift distances become weighted down. When these initial weights are used by the DAF, the smoothed track will be closer to the real trajectory than if both sides are weighted with 0.5 regardless of the drift distance. This helps a lot when resolving l/r ambiguities with the DAF. The idea is that for the first iteration of the DAF, the wire positions are taken. For small drift radii, the wire position does not bend the fit away from the trajectory, whereas the wire position for hits with large drift radii is further away from the trajectory and will therefore bias the fit if not weighted down.

Implements genfit::AbsMeasurement.

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

virtual

Construct (virtual) detector plane (use state's AbsTrackRep). It's possible to make corrections to the plane here. The state should be defined somewhere near the measurement. For virtual planes, the state will be extrapolated to the POCA to point (SpacepointMeasurement) or line (WireMeasurement), and from this info the plane will be constructed.

Implements genfit::AbsMeasurement.

int genfit::AbsMeasurement::getDetId ( ) const

inlineinherited

Definition at line 62 of file AbsMeasurement.h.

References genfit::AbsMeasurement::detId_.

{return detId_;}

unsigned int genfit::AbsMeasurement::getDim ( ) const

inlineinherited

Definition at line 69 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCoords_.

{return rawHitCoords_.GetNrows();}

int genfit::AbsMeasurement::getHitId ( ) const

inlineinherited

Definition at line 63 of file AbsMeasurement.h.

References genfit::AbsMeasurement::hitId_.

{return hitId_;}

int genfit::WireMeasurementNew::getLeftRightResolution ( ) const

inlinevirtual

Reimplemented from genfit::AbsMeasurement.

Definition at line 100 of file WireMeasurementNew.h.

References leftRight_.

{return leftRight_;}

double genfit::WireMeasurementNew::getMaxDistance ( )

inline

Definition at line 99 of file WireMeasurementNew.h.

References maxDistance_.

{return maxDistance_;}

const TVectorD& genfit::AbsMeasurement::getRawHitCoords ( ) const

inlineinherited

Definition at line 58 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCoords_.

{return rawHitCoords_;}

TVectorD& genfit::AbsMeasurement::getRawHitCoords ( )

inlineinherited

Definition at line 60 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCoords_.

{return rawHitCoords_;}

const TMatrixDSym& genfit::AbsMeasurement::getRawHitCov ( ) const

inlineinherited

Definition at line 59 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCov_.

{return rawHitCov_;}

TMatrixDSym& genfit::AbsMeasurement::getRawHitCov ( )

inlineinherited

Definition at line 61 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCov_.

{return rawHitCov_;}

TrackPoint* genfit::AbsMeasurement::getTrackPoint ( ) const

inlineinherited

Definition at line 55 of file AbsMeasurement.h.

References genfit::AbsMeasurement::trackPoint_.

{return trackPoint_;}

virtual bool genfit::AbsMeasurement::isLeftRightMeasurement ( ) const

inlinevirtualinherited

If the AbsMeasurement is a wire hit, the left/right resolution will be used.

Reimplemented in genfit::WireMeasurement.

Definition at line 66 of file AbsMeasurement.h.

{return false;}

virtual bool genfit::WireMeasurementNew::isLeftRigthMeasurement ( ) const

inlinevirtual

Definition at line 98 of file WireMeasurementNew.h.

{return true;}

virtual void genfit::AbsMeasurement::Print ( const Option_t *  = "" ) const

virtualinherited

void genfit::AbsMeasurement::setDetId ( int  detId )

inlineinherited

Definition at line 73 of file AbsMeasurement.h.

References genfit::AbsMeasurement::detId_.

Referenced by PndFtsRecoHit2::PndFtsRecoHit2(), PndGemRecoHit2::PndGemRecoHit2(), PndMdtRecoHit2::PndMdtRecoHit2(), PndSdsRecoHit2::PndSdsRecoHit2(), and PndSttRecoHit2::PndSttRecoHit2().

{detId_ = detId;}

void genfit::AbsMeasurement::setHitId ( int  hitId )

inlineinherited

Definition at line 74 of file AbsMeasurement.h.

References genfit::AbsMeasurement::hitId_.

Referenced by PndFtsRecoHit2::PndFtsRecoHit2(), PndGemRecoHit2::PndGemRecoHit2(), PndMdtRecoHit2::PndMdtRecoHit2(), PndSdsRecoHit2::PndSdsRecoHit2(), and PndSttRecoHit2::PndSttRecoHit2().

{hitId_ = hitId;}

void genfit::WireMeasurementNew::setLeftRightResolution

(

int

lr

)

select how to resolve the left/right ambiguity: -1: negative (left) side on vector (track direction) x (wire direction) 0: auto select (take side with smallest distance to track) 1: positive (right) side on vector (track direction) x (wire direction)

void genfit::WireMeasurementNew::setMaxDistance ( double  d )

inline

Set maximum drift distance. This is used to calculate the start weights of the two measurementsOnPlane.

Definition at line 89 of file WireMeasurementNew.h.

References d, and maxDistance_.

{maxDistance_ = d;}

void genfit::AbsMeasurement::setRawHitCoords ( const TVectorD &  coords )

inlineinherited

Definition at line 71 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCoords_.

{rawHitCoords_ = coords;}

void genfit::AbsMeasurement::setRawHitCov ( const TMatrixDSym &  cov )

inlineinherited

Definition at line 72 of file AbsMeasurement.h.

References genfit::AbsMeasurement::rawHitCov_.

{rawHitCov_ = cov;}

void genfit::AbsMeasurement::setTrackPoint ( TrackPoint *  tp )

inlineinherited

Definition at line 56 of file AbsMeasurement.h.

References genfit::AbsMeasurement::trackPoint_.

Referenced by genfit::TrackPoint::addRawMeasurement().

{trackPoint_ = tp;}

void genfit::WireMeasurementNew::setWireEndPoints	(	const TVector3 &	endPoint1,
		const TVector3 &	endPoint2
	)

Reset the wire end points.

Member Data Documentation

int genfit::AbsMeasurement::detId_

protectedinherited

Definition at line 115 of file AbsMeasurement.h.

Referenced by genfit::AbsMeasurement::getDetId(), and genfit::AbsMeasurement::setDetId().

int genfit::AbsMeasurement::hitId_

protectedinherited

Definition at line 116 of file AbsMeasurement.h.

Referenced by genfit::AbsMeasurement::getHitId(), and genfit::AbsMeasurement::setHitId().

double genfit::WireMeasurementNew::leftRight_

protected

Definition at line 107 of file WireMeasurementNew.h.

Referenced by getLeftRightResolution().

double genfit::WireMeasurementNew::maxDistance_

protected

Wire end point 2 (X, Y, Z)

Definition at line 106 of file WireMeasurementNew.h.

Referenced by getMaxDistance(), and setMaxDistance().

TVectorD genfit::AbsMeasurement::rawHitCoords_

protectedinherited

Definition at line 113 of file AbsMeasurement.h.

Referenced by genfit::AbsMeasurement::getDim(), genfit::AbsMeasurement::getRawHitCoords(), PndFtsRecoHit2::PndFtsRecoHit2(), PndGemRecoHit2::PndGemRecoHit2(), PndHitRecoHit2::PndHitRecoHit2(), PndMdtRecoHit2::PndMdtRecoHit2(), PndSdsRecoHit2::PndSdsRecoHit2(), PndSttRecoHit2::PndSttRecoHit2(), and genfit::AbsMeasurement::setRawHitCoords().

TMatrixDSym genfit::AbsMeasurement::rawHitCov_

protectedinherited

Definition at line 114 of file AbsMeasurement.h.

Referenced by genfit::AbsMeasurement::getRawHitCov(), PndFtsRecoHit2::PndFtsRecoHit2(), PndGemRecoHit2::PndGemRecoHit2(), PndHitRecoHit2::PndHitRecoHit2(), PndMdtRecoHit2::PndMdtRecoHit2(), PndSdsRecoHit2::PndSdsRecoHit2(), PndSttRecoHit2::PndSttRecoHit2(), and genfit::AbsMeasurement::setRawHitCov().

TrackPoint* genfit::AbsMeasurement::trackPoint_

protectedinherited

Pointer to TrackPoint where the measurement belongs to.

Definition at line 119 of file AbsMeasurement.h.

Referenced by genfit::AbsMeasurement::getTrackPoint(), and genfit::AbsMeasurement::setTrackPoint().

double genfit::WireMeasurementNew::wireEndPoint1_[3]

protected

Definition at line 104 of file WireMeasurementNew.h.

double genfit::WireMeasurementNew::wireEndPoint2_[3]

protected

Wire end point 1 (X, Y, Z)

Definition at line 105 of file WireMeasurementNew.h.

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

• WireMeasurementNew.h