Base class for particle flow input reconstructed tracks and simulated particles. More...

#include <PFTrack.h>

Inheritance diagram for reco::PFTrack:

Public Member Functions
void	addPoint (const reco::PFTrajectoryPoint &trajPt)
void	calculatePositionREP ()
double	charge () const
int	color () const
const reco::PFTrajectoryPoint &	extrapolatedPoint (unsigned layerid) const
std::vector < reco::PFTrajectoryPoint > ::const_iterator	innermostMeasurement () const
	iterator on innermost tracker measurement
unsigned int	nTrajectoryMeasurements () const
unsigned int	nTrajectoryPoints () const
std::vector < reco::PFTrajectoryPoint > ::const_iterator	outermostMeasurement () const
	iterator on outermost tracker measurement
	PFTrack (double charge)
	PFTrack ()
	PFTrack (const PFTrack &other)
void	setColor (int color)
void	setPoint (unsigned int index, const reco::PFTrajectoryPoint &measurement)
	set a trajectory point
const reco::PFTrajectoryPoint &	trajectoryPoint (unsigned index) const
const std::vector < reco::PFTrajectoryPoint > &	trajectoryPoints () const
Protected Attributes
double	charge_
	charge
int	color_
	color (transient)
unsigned int	indexInnermost_
	index innermost tracker measurement
unsigned int	indexOutermost_
	index outermost tracker measurement
std::vector < reco::PFTrajectoryPoint >	trajectoryPoints_
	vector of trajectory points
Static Protected Attributes
static const unsigned int	nMaxTrackingLayers_ = 17
	maximal number of tracking layers
Friends
std::ostream &	operator<< (std::ostream &out, const PFTrack &track)

Detailed Description

Base class for particle flow input reconstructed tracks and simulated particles.

A PFTrack contains a vector of PFTrajectoryPoint objects. These points are stored in a vector to benefit from the random access. One must take care of storing the points in the right order, and it might even be necessary to insert dummy points.

For a PFRecTrack, the ordering of the points is the following:

point 1: Closest approach

point 2: Beam Pipe

point 3 to n: Trajectory measurements (from the tracker layers)

point n+1: Preshower Layer 1, or dummy point if not in the preshower zone

point n+2: Preshower Layer 2, or dummy point if not in the preshower zone

point n+3: ECAL Entrance

point n+4: ECAL expected position of the shower maximum, assuming the track is an electron track.

point n+5: HCAL Entrance

For a PFSimParticle, the ordering of the points is the following.

If the particle decays before ECAL:
point 1: start point
point 2: end point

If the particle does not decay before ECAL:
point 1: start point
point 2: PS1 or dummy
point 3: PS2 or dummy
point 4: ECAL entrance
point 5: HCAL entrance

PFRecTracks and PFSimParticles are created in the PFTrackProducer module.

Author:: Renaud Bruneliere

Date:: July 2006

Definition at line 63 of file PFTrack.h.

Constructor & Destructor Documentation

PFTrack::PFTrack ( )

Definition at line 11 of file PFTrack.cc.

References reco::PFTrajectoryPoint::NLayers, nMaxTrackingLayers_, and trajectoryPoints_.

                 :
  charge_(0.),
  indexInnermost_(0),
  indexOutermost_(0),
  color_(1) {

  // prepare vector of trajectory points for propagated positions
  trajectoryPoints_.reserve(PFTrajectoryPoint::NLayers + nMaxTrackingLayers_);
}

PFTrack::PFTrack ( double charge )

Definition at line 22 of file PFTrack.cc.

References reco::PFTrajectoryPoint::NLayers, nMaxTrackingLayers_, and trajectoryPoints_.

                              : 
  charge_(charge), 
  indexInnermost_(0),
  indexOutermost_(0),
  color_(1) {

  // prepare vector of trajectory points for propagated positions
  trajectoryPoints_.reserve(PFTrajectoryPoint::NLayers + nMaxTrackingLayers_);
}

PFTrack::PFTrack ( const PFTrack & other )

Definition at line 33 of file PFTrack.cc.

                                     :
  charge_(other.charge_), 
  trajectoryPoints_(other.trajectoryPoints_),
  indexInnermost_(other.indexInnermost_),
  indexOutermost_(other.indexOutermost_),
  color_(other.color_)
{}

Member Function Documentation

void PFTrack::addPoint ( const reco::PFTrajectoryPoint & trajPt )

add a trajectory measurement

Definition at line 42 of file PFTrack.cc.

References reco::PFTrajectoryPoint::BeamPipeOrEndVertex, indexInnermost_, indexOutermost_, reco::PFTrajectoryPoint::isTrackerLayer(), and trajectoryPoints_.

Referenced by PFTrackTransformer::addPoints(), and PFTrackTransformer::addPointsAndBrems().

                                                      {
  
  //   cout<<"adding "<<trajPt<<endl;

  if (trajPt.isTrackerLayer()) {
    if (!indexOutermost_) { // first time a measurement is added
      if (trajectoryPoints_.size() < PFTrajectoryPoint::BeamPipeOrEndVertex + 1) {
        PFTrajectoryPoint dummyPt;
        for (unsigned iPt = trajectoryPoints_.size(); iPt < PFTrajectoryPoint::BeamPipeOrEndVertex + 1; iPt++)
          trajectoryPoints_.push_back(dummyPt);
      } else if (trajectoryPoints_.size() > PFTrajectoryPoint::BeamPipeOrEndVertex + 1) {
        // throw an exception here
        //      edm::LogError("PFTrack")<<"trajectoryPoints_.size() is too large = " 
        //                              <<trajectoryPoints_.size()<<"\n";
      }
      indexOutermost_ = indexInnermost_ = PFTrajectoryPoint::BeamPipeOrEndVertex + 1;
    } else 
      indexOutermost_++;
  }
  // Use push_back instead of insert in order to gain time
  trajectoryPoints_.push_back(trajPt);

  //   cout<<"adding point "<<*this<<endl;
}

void PFTrack::calculatePositionREP ( )

calculate posrep_ once and for all for each point

Definition at line 68 of file PFTrack.cc.

References i, and trajectoryPoints_.

Referenced by PFTrackTransformer::addPointsAndBrems(), reco::GsfPFRecTrack::calculateBremPositionREP(), and ConvBremPFTrackFinder::runConvBremFinder().

                                   {
  
  for(unsigned i=0; i<trajectoryPoints_.size(); i++) {
    trajectoryPoints_[i].calculatePositionREP();
  }
}

double reco::PFTrack::charge ( ) const [inline]

Returns:: electric charge

Definition at line 87 of file PFTrack.h.

References charge_.

Referenced by PFRootEventManager::countChargedAndPhotons(), and PFRootEventManagerColin::processHIGH_E_TAUS().

{ return charge_; }

int reco::PFTrack::color ( ) const [inline]

Definition at line 122 of file PFTrack.h.

References color_.

Referenced by setColor().

{ return color_; }

const reco::PFTrajectoryPoint & PFTrack::extrapolatedPoint ( unsigned layerid ) const

Returns:: an extrapolated point

Definition at line 76 of file PFTrack.cc.

References Exception, indexInnermost_, reco::PFTrajectoryPoint::NLayers, nTrajectoryMeasurements(), and trajectoryPoints_.

Referenced by PFRootEventManager::closestParticle(), PFRootEventManager::fillOutEventWithSimParticles(), PFAlgo::isSatelliteCluster(), DisplayManager::loadGSimParticles(), LinkByRecHit::testTrackAndClusterByRecHit(), and PFBlockAlgo::testTrackAndPS().

                                                                              {
  
  if( layerid >= reco::PFTrajectoryPoint::NLayers ||
      nTrajectoryMeasurements() + layerid >= trajectoryPoints_.size() ) {

    // cout<<(*this)<<endl;
    // cout<<"lid "<<layerid<<" "<<nTrajectoryMeasurements()<<" "<<trajectoryPoints_.size()<<endl;
    
    throw cms::Exception("SizeError")<<"PFRecTrack::extrapolatedPoint: cannot access "
                                     <<layerid
                                     <<" #traj meas = "<<nTrajectoryMeasurements()
                                     <<" #traj points = "<<trajectoryPoints_.size()
                                     <<endl
                                     <<(*this);
    // assert(0);
  }
  if (layerid < indexInnermost_)
    return trajectoryPoints_[ layerid ];
  else
    return trajectoryPoints_[ nTrajectoryMeasurements() + layerid ];  
}

std::vector< reco::PFTrajectoryPoint >::const_iterator reco::PFTrack::innermostMeasurement ( ) const [inline]

iterator on innermost tracker measurement

Definition at line 111 of file PFTrack.h.

References indexInnermost_, and trajectoryPoints_.

        { return trajectoryPoints_.begin() + indexInnermost_; }

unsigned int reco::PFTrack::nTrajectoryMeasurements ( ) const [inline]

Returns:: number of trajectory measurements in tracker

Definition at line 94 of file PFTrack.h.

References indexInnermost_, and indexOutermost_.

Referenced by PFRootEventManager::closestParticle(), and extrapolatedPoint().

        { return (indexOutermost_ ? indexOutermost_ - indexInnermost_ + 1 : 0); }

unsigned int reco::PFTrack::nTrajectoryPoints ( ) const [inline]

Returns:: number of trajectory points

Definition at line 90 of file PFTrack.h.

References trajectoryPoints_.

Referenced by CalibratableTest::analyze(), PFRootEventManager::closestParticle(), and PFRootEventManager::fillOutEventWithSimParticles().

        { return trajectoryPoints_.size(); }

std::vector< reco::PFTrajectoryPoint >::const_iterator reco::PFTrack::outermostMeasurement ( ) const [inline]

iterator on outermost tracker measurement

Definition at line 116 of file PFTrack.h.

References indexOutermost_, and trajectoryPoints_.

        { return trajectoryPoints_.begin() + indexOutermost_; }

void reco::PFTrack::setColor ( int color ) [inline]

Definition at line 120 of file PFTrack.h.

References color(), and color_.

{color_ = color;}

void reco::PFTrack::setPoint	(	unsigned int	index,
		const reco::PFTrajectoryPoint &	measurement
	)		`[inline]`

set a trajectory point

Definition at line 78 of file PFTrack.h.

References getHLTprescales::index, and trajectoryPoints_.

        { trajectoryPoints_[index] = measurement; }

const reco::PFTrajectoryPoint& reco::PFTrack::trajectoryPoint ( unsigned index ) const [inline]

Returns:: a trajectory point

Definition at line 102 of file PFTrack.h.

References getHLTprescales::index, and trajectoryPoints_.

Referenced by CalibratableTest::analyze(), CalibratableTest::findCandidatesInDeltaR(), and DisplayManager::loadGSimParticles().

        { return trajectoryPoints_[index]; }

const std::vector< reco::PFTrajectoryPoint >& reco::PFTrack::trajectoryPoints ( ) const [inline]

Returns:: vector of trajectory points

Definition at line 98 of file PFTrack.h.

References trajectoryPoints_.

Referenced by DisplayManager::loadGSimParticles(), and PFRootEventManager::trackInsideGCut().

        { return trajectoryPoints_; }

Friends And Related Function Documentation

std::ostream& operator<<	(	std::ostream &	out,
		const PFTrack &	track
	)		`[friend]`

Member Data Documentation

double reco::PFTrack::charge_ [protected]

charge

Definition at line 133 of file PFTrack.h.

Referenced by charge().

int reco::PFTrack::color_ [protected]

color (transient)

Definition at line 145 of file PFTrack.h.

Referenced by color(), and setColor().

unsigned int reco::PFTrack::indexInnermost_ [protected]

index innermost tracker measurement

Definition at line 139 of file PFTrack.h.

Referenced by addPoint(), extrapolatedPoint(), innermostMeasurement(), and nTrajectoryMeasurements().

unsigned int reco::PFTrack::indexOutermost_ [protected]

index outermost tracker measurement

Definition at line 142 of file PFTrack.h.

Referenced by addPoint(), nTrajectoryMeasurements(), and outermostMeasurement().

const unsigned PFTrack::nMaxTrackingLayers_ = 17 [static, protected]

maximal number of tracking layers

Definition at line 130 of file PFTrack.h.

Referenced by PFTrack().

std::vector< reco::PFTrajectoryPoint > reco::PFTrack::trajectoryPoints_ [protected]

vector of trajectory points

Definition at line 136 of file PFTrack.h.

Referenced by addPoint(), calculatePositionREP(), extrapolatedPoint(), innermostMeasurement(), nTrajectoryPoints(), outermostMeasurement(), PFTrack(), setPoint(), trajectoryPoint(), and trajectoryPoints().

reco::PFTrack Class Reference

Public Member Functions

Protected Attributes

Static Protected Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation