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, NLayers = 8 }
	Define the different layers where the track can be propagated. More...
typedef ROOT::Math::PositionVector3D < ROOT::Math::CylindricalEta3D < Double32_t > >	REPPoint
Public Member Functions
void	calculatePositionREP ()
	calculate posrep_ once and for all
int	detId () const
	measurement detId
bool	isTrackerLayer () const
	is this point corresponding to an intersection with a tracker layer ?
bool	isValid () const
	is this point valid ?
int	layer () const
	trajectory point layer
const math::XYZTLorentzVector &	momentum () const
	4-momenta quadrivector
bool	operator== (const reco::PFTrajectoryPoint &other) const
	PFTrajectoryPoint ()
	default constructor. Set variables at default dummy values
	PFTrajectoryPoint (const PFTrajectoryPoint &other)
	copy
	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
const math::XYZPoint &	position () const
	cartesian position (x, y, z)
const REPPoint &	positionREP () const
	trajectory position in (rho, eta, phi) base
virtual	~PFTrajectoryPoint ()
	destructor
Private Attributes
int	detId_
	detid if measurement is corresponding to a tracker layer
bool	isTrackerLayer_
	Is the measurement corresponding to a tracker layer? or was it obtained by propagating the track to a certain position?
int	layer_
	propagated layer
math::XYZTLorentzVector	momentum_
	momentum quadrivector
REPPoint	posrep_
	position in (rho, eta, phi) base (transient)
math::XYZPoint	posxyz_
	cartesian position (x, y, z)
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<Double32_t> > reco::PFTrajectoryPoint::REPPoint

Definition at line 29 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.
NLayers

Definition at line 32 of file PFTrajectoryPoint.h.

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

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.

{}

Member Function Documentation

void reco::PFTrajectoryPoint::calculatePositionREP ( ) [inline]

calculate posrep_ once and for all

Definition at line 94 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 70 of file PFTrajectoryPoint.h.

References detId_.

Referenced by reco::operator<<().

{ return detId_; }

bool reco::PFTrajectoryPoint::isTrackerLayer ( ) const [inline]

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

Definition at line 82 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 76 of file PFTrajectoryPoint.h.

References detId_, and layer_.

Referenced by PFAlgo::isSatelliteCluster(), PFElecTkProducer::minTangDist(), reco::PFBlockElementBrem::PFBlockElementBrem(), reco::PFBlockElementGsfTrack::PFBlockElementGsfTrack(), reco::PFBlockElementTrack::PFBlockElementTrack(), PFTrackProducer::produce(), ConvBremPFTrackFinder::runConvBremFinder(), LinkByRecHit::testTrackAndClusterByRecHit(), and PFBlockAlgo::testTrackAndPS().

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

int reco::PFTrajectoryPoint::layer ( ) const [inline]

trajectory point layer

Definition at line 73 of file PFTrajectoryPoint.h.

References layer_.

Referenced by reco::operator<<().

{ return layer_; }

const math::XYZTLorentzVector& reco::PFTrajectoryPoint::momentum ( ) const [inline]

4-momenta quadrivector

Definition at line 99 of file PFTrajectoryPoint.h.

References momentum_.

Referenced by CalibratableTest::analyze(), PFRootEventManager::closestParticle(), PFRootEventManager::fillOutEventWithSimParticles(), EFilter::filter(), DisplayManager::loadGGsfRecTracks(), DisplayManager::loadGRecTracks(), DisplayManager::loadGSimParticles(), reco::operator<<(), ConvBremPFTrackFinder::runConvBremFinder(), PFRootEventManager::tauBenchmark(), and LinkByRecHit::testTrackAndClusterByRecHit().

{ return momentum_; }

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

Definition at line 40 of file PFTrajectoryPoint.cc.

References momentum_, and posxyz_.

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