a local straight line track representation More...

#include <EicRoot/blob/master/GenfitTools/trackrep/LSLtrackRep/LSLTrackRep.h>

Inheritance diagram for LSLTrackRep:

Collaboration diagram for LSLTrackRep:

Public Member Functions
	LSLTrackRep ()

	LSLTrackRep (double z, double x, double y, double dxdz, double dydz, double invp, double sigx, double sigy, double sigdxdz, double sigdydz, double siginvp, GFAbsBField *field)

	LSLTrackRep (const LSLTrackRep &rep)

virtual	~LSLTrackRep ()

virtual GFAbsTrackRep *	clone () const

virtual GFAbsTrackRep *	prototype () const

void	init (const TVector3 &pos, double dxdz, double dydz, double invp, double sigx, double sigy, double sigdxdz, double sigdydz, double siginvp, GFAbsBField *field)

void	SetBField (GFAbsBField *b)

void	setData (const TMatrixT< double > &st, const GFDetPlane &pl, const TMatrixT< double > *cov=NULL)

void	setRungeKuttaAcc (double acc)

void	setRungeKuttaAdaptive (bool f)

virtual double	extrapolate (const GFDetPlane &, TMatrixT< double > &statePred)
	returns the tracklength spanned in this extrapolation

virtual double	extrapolate (const GFDetPlane &, TMatrixT< double > &statePred, TMatrixT< double > &covPred)
	Extrapolates the track to the given detectorplane.

virtual void	extrapolateToPoint (const TVector3 &, TVector3 &poca, TVector3 &normVec)
	This method is to extrapolate the track to point of closest approach to a point in space.

virtual void	stepalong (double h)

virtual TVector3	getPos (const GFDetPlane &)

virtual TVector3	getMom (const GFDetPlane &)

virtual void	getPosMom (const GFDetPlane &, TVector3 &pos, TVector3 &mom)

virtual TVectorT< double >	getGlobal ()

virtual TMatrixT< double >	getGlobalCov ()

virtual double	getCharge () const

virtual void	switchDirection ()

Public Member Functions inherited from GFAbsTrackRep
	GFAbsTrackRep ()

	GFAbsTrackRep (int)

virtual	~GFAbsTrackRep ()

virtual void	extrapolateToLine (const TVector3 &point1, const TVector3 &point2, TVector3 &poca, TVector3 &normVec, TVector3 &poca_onwire)
	This method extrapolates to the point of closest approach to a line.

virtual double	stepalong (double h, TVector3 &point, TVector3 &dir)
	make step of h cm along the track

double	extrapolate (const GFDetPlane &plane)
	This changes the state and cov and plane of the rep.

unsigned int	getDim () const
	returns dimension of state vector

virtual void	Print (const Option_t *="") const

TMatrixT< double >	getState () const

TMatrixT< double >	getCov () const

double	getStateElem (int i) const

double	getCovElem (int i, int j) const

virtual void	getPosMomCov (const GFDetPlane &pl, TVector3 &pos, TVector3 &mom, TMatrixT< double > &cov)
	method which gets position, momentum and 6x6 covariance matrix

virtual int	getPDG ()
	method which gets pdg particle code

TVector3	getPos ()

TVector3	getMom ()

void	getPosMomCov (TVector3 &pos, TVector3 &mom, TMatrixT< double > &c)

TMatrixT< double >	getFirstState () const

TMatrixT< double >	getFirstCov () const

GFDetPlane	getFirstPlane () const

TMatrixT< double >	getLastState () const

TMatrixT< double >	getLastCov () const

GFDetPlane	getLastPlane () const

double	getChiSqu () const

double	getForwardChiSqu () const

double	getRedChiSqu () const
	returns chi2/ndf

double	getPVal () const

unsigned int	getNDF () const

double	getXX0 () const
	X/X0 (total fraction of radiation length passed), cumulated during last extrapolation. The fitter has to reset XX0 via resetXX0()

virtual void	setData (const TMatrixT< double > &st, const GFDetPlane &pl, const TMatrixT< double > cov=NULL, const TMatrixT< double > aux=NULL)
	Puts the track representation in a given state.

void	setCov (const TMatrixT< double > &aCov)

void	setFirstState (const TMatrixT< double > &aState)

void	setFirstCov (const TMatrixT< double > &aCov)

void	setFirstPlane (const GFDetPlane &aPlane)

void	setLastState (const TMatrixT< double > &aState)

void	setLastCov (const TMatrixT< double > &aCov)

void	setLastPlane (const GFDetPlane &aPlane)

virtual void	setPosMomCov (const TVector3 &pos, const TVector3 &mom, const TMatrixT< double > &cov)
	method which sets position, momentum and 6x6 covariance matrix

const GFDetPlane &	getReferencePlane () const

void	setChiSqu (double aChiSqu)

void	setForwardChiSqu (double aChiSqu)

void	setNDF (unsigned int n)

void	addChiSqu (double aChiSqu)

void	addForwardChiSqu (double aChiSqu)

void	addNDF (unsigned int n)

void	setStatusFlag (int _val)

bool	setInverted (bool f=true)
	Deprecated. Should be removed soon.

bool	getStatusFlag ()

virtual void	reset ()

virtual bool	hasAuxInfo ()
	See if the track representation has auxillary information stored.

virtual const TMatrixT< double > *	getAuxInfo (const GFDetPlane &)
	Get auxillary information from the track representation.

void	resetXX0 ()

Private Member Functions
void	Jacobian (const GFDetPlane &pl, const TMatrixT< double > &statePred, TMatrixT< double > &jacResult)

Private Attributes
double	s

double	_acc

bool	_adaptive

AbsNystromEQM *	_eqm

Friends
std::ostream &	operator<< (std::ostream &s, const LSLTrackRep &me)

Additional Inherited Members
Protected Attributes inherited from GFAbsTrackRep
unsigned int	fDimension
	Dimensionality of track representation.

TMatrixT< double >	fState
	The vector of track parameters.

TMatrixT< double >	fCov
	The covariance matrix.

double	fChiSqu
	chiSqu of the track fit

double	fForwardChiSqu

unsigned int	fNdf

int	fStatusFlag
	status of track representation: 0 means everything's OK

bool	fInverted
	specifies the direction of flight of the particle

TMatrixT< double >	fFirstState
	state, cov and plane for first and last point in fit

TMatrixT< double >	fFirstCov

TMatrixT< double >	fLastState

TMatrixT< double >	fLastCov

GFDetPlane	fFirstPlane

GFDetPlane	fLastPlane

GFDetPlane	fRefPlane

double	fXX0

Detailed Description

a local straight line track representation

The parameterization for the local straight line track representation is:

x (in global coordinates)
y (in global coordinates)
dx/dz
dy/dz
1/p

The free parameter is z (in global coordinates)

The LSLTrackRep can only extrapolate to detector planes perpendicular to the z-axis and as such does not fulfill the general genfit criteria.

If no BField is specified through GFAbsBFieldIfc a constant field of B=(0,0,2T) is hardcoded.

LSLTrackRep uses a simple Nystrom-type integrator to extrapolate the track parameters in the BField.

Material effects are NOT taken into account.

Definition at line 63 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 63 of file LSLTrackRep.h

Constructor & Destructor Documentation

LSLTrackRep::LSLTrackRep ( )

Definition at line 32 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 32 of file LSLTrackRep.cxx

References _eqm, and GFAbsTrackRep::fRefPlane.

Referenced by clone(), and prototype().

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LSLTrackRep::LSLTrackRep	(	double	z,
		double	x,
		double	y,
		double	dxdz,
		double	dydz,
		double	invp,
		double	sigx,
		double	sigy,
		double	sigdxdz,
		double	sigdydz,
		double	siginvp,
		GFAbsBField *	field
	)

Definition at line 41 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 41 of file LSLTrackRep.cxx

References _eqm, GFAbsTrackRep::fCov, GFAbsTrackRep::fRefPlane, GFAbsTrackRep::fState, s, sigx, sigy, x, y, and z.

LSLTrackRep::LSLTrackRep ( const LSLTrackRep & rep )

Definition at line 67 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 67 of file LSLTrackRep.cxx

References _acc, _adaptive, _eqm, and s.

LSLTrackRep::~LSLTrackRep ( )

virtual

Definition at line 77 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 77 of file LSLTrackRep.cxx

References _eqm.

Member Function Documentation

virtual GFAbsTrackRep* LSLTrackRep::clone ( ) const

inlinevirtual

Implements GFAbsTrackRep.

Definition at line 79 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 79 of file LSLTrackRep.h

References LSLTrackRep().

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double LSLTrackRep::extrapolate	(	const GFDetPlane &	plane,
		TMatrixT< double > &	statePred
	)

virtual

returns the tracklength spanned in this extrapolation

There is a default implementation in GFAbsTrackRep.cxx which just drops the predicted covaraiance. If your trackrep has a way to extrapolate without giving a correct cov (that would be faster probably), please overwrite it. This method does NOT alter the state of the object!

Reimplemented from GFAbsTrackRep.

Definition at line 118 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 118 of file LSLTrackRep.cxx

References _acc, _adaptive, _eqm, GFAbsTrackRep::fDimension, GFAbsTrackRep::fState, GFDetPlane::getO(), Nystrom::propagate(), s, Nystrom::setAccuracy(), Nystrom::setAdaptive(), and Acts::UnitConstants::u.

Referenced by extrapolate(), extrapolateToPoint(), getMom(), getPos(), getPosMom(), and Jacobian().

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double LSLTrackRep::extrapolate	(	const GFDetPlane &	plane,
		TMatrixT< double > &	statePred,
		TMatrixT< double > &	covPred
	)

virtual

Extrapolates the track to the given detectorplane.

Results are put into statePred and covPred This method does NOT alter the state of the object!

Implements GFAbsTrackRep.

Definition at line 184 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 184 of file LSLTrackRep.cxx

References extrapolate(), GFAbsTrackRep::fCov, GFAbsTrackRep::fDimension, and Jacobian().

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void LSLTrackRep::extrapolateToPoint	(	const TVector3 &	point,
		TVector3 &	poca,
		TVector3 &	normVec
	)

virtual

This method is to extrapolate the track to point of closest approach to a point in space.

There is an empty implementation of this method in GFAbsTrackRep.cxx, which will just abort with an error message. One can overwrite this method if one wishes to implement a track representation, which should have this feature. An example of an experiment in which you would not need this feature would be track fitting (not so much vertexing) in an experiment with only planar trackers like silicons or planar wire chambers and such. An example where you would need it, would be a TPC where you have to fit the track to space points, or other drift chambers with complicated hit topology. This method does NOT alter the state of the object!

Reimplemented from GFAbsTrackRep.

Definition at line 202 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 202 of file LSLTrackRep.cxx

References Acts::Test::dim, extrapolate(), GFAbsTrackRep::getDim(), GFDetPlane::getO(), Acts::PrimitivesView3DTest::plane, GFDetPlane::setO(), GFDetPlane::setU(), and GFDetPlane::setV().

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virtual double LSLTrackRep::getCharge ( ) const

inlinevirtual

Implements GFAbsTrackRep.

Definition at line 126 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 126 of file LSLTrackRep.h

References GFAbsTrackRep::fInverted, and GFAbsTrackRep::fState.

Referenced by getGlobalCov().

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TVectorT< double > LSLTrackRep::getGlobal ( )

virtual

Definition at line 296 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 296 of file LSLTrackRep.cxx

References GFAbsTrackRep::getMom(), GFAbsTrackRep::getPos(), charm_jet_coverage::mom, and pos().

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TMatrixT< double > LSLTrackRep::getGlobalCov ( )

virtual

Definition at line 307 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 307 of file LSLTrackRep.cxx

References GFAbsTrackRep::fCov, GFAbsTrackRep::fState, getCharge(), Acts::IntegrationTest::L, and p.

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TVector3 LSLTrackRep::getMom ( const GFDetPlane & pl )

virtual

Implements GFAbsTrackRep.

Definition at line 261 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 261 of file LSLTrackRep.cxx

References extrapolate(), GFAbsTrackRep::fInverted, GFAbsTrackRep::fState, GFDetPlane::getO(), p, and z.

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TVector3 LSLTrackRep::getPos ( const GFDetPlane & pl )

virtual

Implements GFAbsTrackRep.

Definition at line 251 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 251 of file LSLTrackRep.cxx

References extrapolate(), GFAbsTrackRep::fState, GFDetPlane::getO(), p, and z.

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void LSLTrackRep::getPosMom	(	const GFDetPlane &	pl,
		TVector3 &	pos,
		TVector3 &	mom
	)

virtual

Implements GFAbsTrackRep.

Definition at line 279 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 279 of file LSLTrackRep.cxx

References extrapolate(), GFAbsTrackRep::fInverted, GFAbsTrackRep::fState, GFDetPlane::getO(), charm_jet_coverage::mom, p, and z.

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void LSLTrackRep::init	(	const TVector3 &	pos,
		double	dxdz,
		double	dydz,
		double	invp,
		double	sigx,
		double	sigy,
		double	sigdxdz,
		double	sigdydz,
		double	siginvp,
		GFAbsBField *	field
	)

Definition at line 83 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 83 of file LSLTrackRep.cxx

References _eqm, GFAbsTrackRep::fCov, GFAbsTrackRep::fRefPlane, GFAbsTrackRep::fState, s, sigx, and sigy.

void LSLTrackRep::Jacobian	(	const GFDetPlane &	pl,
		const TMatrixT< double > &	statePred,
		TMatrixT< double > &	jacResult
	)

private

Definition at line 227 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 227 of file LSLTrackRep.cxx

References Acts::UnitConstants::e, extrapolate(), GFAbsTrackRep::fState, and Acts::UnitConstants::h.

Referenced by extrapolate().

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virtual GFAbsTrackRep* LSLTrackRep::prototype ( ) const

inlinevirtual

Implements GFAbsTrackRep.

Definition at line 81 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 81 of file LSLTrackRep.h

References LSLTrackRep().

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void LSLTrackRep::SetBField ( GFAbsBField * b )

Definition at line 111 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 111 of file LSLTrackRep.cxx

References _eqm.

void LSLTrackRep::setData	(	const TMatrixT< double > &	st,
		const GFDetPlane &	pl,
		const TMatrixT< double > *	cov = `NULL`
	)

inline

Definition at line 96 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 96 of file LSLTrackRep.h

References Acts::Test::cov, GFDetPlane::getO(), s, and GFAbsTrackRep::setData().

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void LSLTrackRep::setRungeKuttaAcc ( double acc )

inline

Definition at line 100 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 100 of file LSLTrackRep.h

References _acc.

void LSLTrackRep::setRungeKuttaAdaptive ( bool f )

inline

Definition at line 101 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 101 of file LSLTrackRep.h

References _adaptive.

void LSLTrackRep::stepalong ( double h )

virtual

Definition at line 219 of file LSLTrackRep.cxx.

View newest version in sPHENIX GitHub at line 219 of file LSLTrackRep.cxx

References GFAbsTrackRep::extrapolate(), GFAbsTrackRep::fRefPlane, GFDetPlane::getO(), and GFDetPlane::setO().

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virtual void LSLTrackRep::switchDirection ( )

inlinevirtual

Implements GFAbsTrackRep.

Definition at line 129 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 129 of file LSLTrackRep.h

Friends And Related Function Documentation

std::ostream& operator<<	(	std::ostream &	s,
		const LSLTrackRep &	me
	)

friend

Member Data Documentation

double LSLTrackRep::_acc

private

Definition at line 143 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 143 of file LSLTrackRep.h

Referenced by extrapolate(), LSLTrackRep(), and setRungeKuttaAcc().

bool LSLTrackRep::_adaptive

private

Definition at line 144 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 144 of file LSLTrackRep.h

Referenced by extrapolate(), LSLTrackRep(), and setRungeKuttaAdaptive().

AbsNystromEQM* LSLTrackRep::_eqm

private

Definition at line 146 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 146 of file LSLTrackRep.h

Referenced by extrapolate(), init(), LSLTrackRep(), SetBField(), and ~LSLTrackRep().

double LSLTrackRep::s

private

Definition at line 129 of file LSLTrackRep.h.

View newest version in sPHENIX GitHub at line 129 of file LSLTrackRep.h

Referenced by extrapolate(), init(), LSLTrackRep(), and setData().

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

EicRoot/blob/master/GenfitTools/trackrep/LSLtrackRep/LSLTrackRep.h
EicRoot/blob/master/GenfitTools/trackrep/LSLtrackRep/LSLTrackRep.cxx

Public Member Functions

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation