A PFTrack holds several trajectory points, which basically contain the position and momentum of a track at a given position. More...

#include <PFTrajectoryPoint.h>

Public Types
enum	LayerType { ClosestApproach = 0, BeamPipeOrEndVertex = 1, PS1 = 2, PS2 = 3, ECALEntrance = 4, ECALShowerMax = 5, HCALEntrance = 6, HCALExit = 7, HOLayer = 8, NLayers = 9 }
	Define the different layers where the track can be propagated. More...

typedef ROOT::Math::PositionVector3D< ROOT::Math::CylindricalEta3D< double > >	REPPoint

Public Member Functions
void	calculatePositionREP ()
	calculate posrep_ once and for all More...

int	detId () const
	measurement detId More...

bool	isTrackerLayer () const
	is this point corresponding to an intersection with a tracker layer ? More...

bool	isValid () const
	is this point valid ? More...

int	layer () const
	trajectory point layer More...

const math::XYZTLorentzVector &	momentum () const
	4-momenta quadrivector More...

bool	operator== (const reco::PFTrajectoryPoint &other) const

	PFTrajectoryPoint ()
	default constructor. Set variables at default dummy values More...

	PFTrajectoryPoint (int detId, int layer, const math::XYZPoint &posxyz, const math::XYZTLorentzVector &momentum)
	constructor from values. set detId to -1 if this point is not from a tracker layer More...

	PFTrajectoryPoint (const PFTrajectoryPoint &other)
	copy More...

const math::XYZPoint &	position () const
	cartesian position (x, y, z) More...

const REPPoint &	positionREP () const
	trajectory position in (rho, eta, phi) base More...

virtual	~PFTrajectoryPoint ()
	destructor More...

Private Attributes
int	detId_
	detid if measurement is corresponding to a tracker layer More...

bool	isTrackerLayer_
	Is the measurement corresponding to a tracker layer? or was it obtained by propagating the track to a certain position? More...

int	layer_
	propagated layer More...

math::XYZTLorentzVector	momentum_
	momentum quadrivector More...

REPPoint	posrep_
	position in (rho, eta, phi) base (transient) More...

math::XYZPoint	posxyz_
	cartesian position (x, y, z) More...

Friends
std::ostream &	operator<< (std::ostream &out, const reco::PFTrajectoryPoint &trajPoint)

Detailed Description

A PFTrack holds several trajectory points, which basically contain the position and momentum of a track at a given position.

Author: Renaud Bruneliere

Date: July 2006

Definition at line 26 of file PFTrajectoryPoint.h.

Member Typedef Documentation

typedef ROOT::Math::PositionVector3D<ROOT::Math::CylindricalEta3D<double> > reco::PFTrajectoryPoint::REPPoint

Definition at line 32 of file PFTrajectoryPoint.h.

Member Enumeration Documentation

enum reco::PFTrajectoryPoint::LayerType

Define the different layers where the track can be propagated.

Enumerator
ClosestApproach	Point of closest approach from beam axis (initial point in the case of PFSimParticle)
BeamPipeOrEndVertex
PS1	Preshower layer 1.
PS2	Preshower layer 2.
ECALEntrance	ECAL front face.
ECALShowerMax	expected maximum of the shower in ECAL, for an e/gamma particle
HCALEntrance	HCAL front face.
HCALExit	HCAL exit.
HOLayer	HO layer.
NLayers

Definition at line 35 of file PFTrajectoryPoint.h.

                    {
       ClosestApproach = 0,
       BeamPipeOrEndVertex = 1,       
       PS1 = 2,             
       PS2 = 3,             
       ECALEntrance = 4,  
       ECALShowerMax = 5,   
       HCALEntrance = 6,
       HCALExit = 7,
       HOLayer = 8,
 
       NLayers = 9
     };

Constructor & Destructor Documentation

PFTrajectoryPoint::PFTrajectoryPoint ( )

default constructor. Set variables at default dummy values

Definition at line 6 of file PFTrajectoryPoint.cc.

                                      : 
   isTrackerLayer_(false),
   detId_(-1),
   layer_(-1) {}

PFTrajectoryPoint::PFTrajectoryPoint	(	int	detId,
		int	layer,
		const math::XYZPoint &	posxyz,
		const math::XYZTLorentzVector &	momentum
	)

constructor from values. set detId to -1 if this point is not from a tracker layer

Definition at line 12 of file PFTrajectoryPoint.cc.

References isTrackerLayer_, posrep_, and posxyz_.

                                                                             :
   isTrackerLayer_(false),
   detId_(detId),
   layer_(layer),
   posxyz_(posxyz),
   momentum_(momentum) 
 { 
   if (detId) isTrackerLayer_ = true;
   posrep_.SetCoordinates(posxyz_.Rho(), posxyz_.Eta(), posxyz_.Phi()); 
 }

PFTrajectoryPoint::PFTrajectoryPoint ( const PFTrajectoryPoint & other )

copy

Definition at line 27 of file PFTrajectoryPoint.cc.

                                                                    :
   isTrackerLayer_(other.isTrackerLayer_),
   detId_(other.detId_), 
   layer_(other.layer_), 
   posxyz_(other.posxyz_), 
   posrep_(other.posrep_),
   momentum_(other.momentum_) { }

PFTrajectoryPoint::~PFTrajectoryPoint ( )

virtual

destructor

Definition at line 36 of file PFTrajectoryPoint.cc.

37 {}

Member Function Documentation

void reco::PFTrajectoryPoint::calculatePositionREP ( )

inline

calculate posrep_ once and for all

Definition at line 100 of file PFTrajectoryPoint.h.

References posrep_, and posxyz_.

                                 {
       posrep_.SetCoordinates( posxyz_.Rho(), posxyz_.Eta(), posxyz_.Phi() );
     }

int reco::PFTrajectoryPoint::detId ( ) const

inline

measurement detId

Definition at line 76 of file PFTrajectoryPoint.h.

References detId_.

Referenced by reco::operator<<().

76 { return detId_; }

reco::PFTrajectoryPoint::detId_

int detId_

detid if measurement is corresponding to a tracker layer

Definition: PFTrajectoryPoint.h:118

bool reco::PFTrajectoryPoint::isTrackerLayer ( ) const

inline

is this point corresponding to an intersection with a tracker layer ?

Definition at line 88 of file PFTrajectoryPoint.h.

References detId_.

Referenced by reco::PFTrack::addPoint().

                                 {
       if(detId_ >= 0 ) return true; 
       else return false;
     }

bool reco::PFTrajectoryPoint::isValid ( void ) const

inline

is this point valid ?

Definition at line 82 of file PFTrajectoryPoint.h.

References detId_, and layer_.

                              {
       if( layer_ == -1 && detId_ == -1 ) return false;
       else return true;
     }

int reco::PFTrajectoryPoint::layer ( ) const

inline

trajectory point layer

Definition at line 79 of file PFTrajectoryPoint.h.

References layer_.

Referenced by geometryXMLparser.DTAlignable::index(), geometryXMLparser.CSCAlignable::index(), and reco::operator<<().

79 { return layer_; }

reco::PFTrajectoryPoint::layer_

int layer_

propagated layer

Definition: PFTrajectoryPoint.h:121

const math::XYZTLorentzVector& reco::PFTrajectoryPoint::momentum ( ) const

inline

4-momenta quadrivector

Definition at line 105 of file PFTrajectoryPoint.h.

References momentum_, operator<<, operator==(), trackingPlots::other, and MillePedeFileConverter_cfg::out.

Referenced by CalibratableTest::analyze(), reco::PFTrack::extrapolatedPoint(), EFilter::filter(), reco::operator<<(), reco::PFSimParticle::PFSimParticle(), ConvBremPFTrackFinder::runConvBremFinder(), KDTreeLinkerTrackEcal::searchLinks(), and LinkByRecHit::testTrackAndClusterByRecHit().

105 { return momentum_; }

reco::PFTrajectoryPoint::momentum_

math::XYZTLorentzVector momentum_

momentum quadrivector

Definition: PFTrajectoryPoint.h:130

bool PFTrajectoryPoint::operator== ( const reco::PFTrajectoryPoint & other ) const

Definition at line 40 of file PFTrajectoryPoint.cc.

References momentum_, and posxyz_.

Referenced by momentum().

                                                                              {
   if( posxyz_ == other.posxyz_ && 
       momentum_ == other.momentum_ ) return true;
   else return false;
 }