GapClusterizerInZ Class Reference

#include <GapClusterizerInZ.h>

Inheritance diagram for GapClusterizerInZ:

Public Member Functions
std::vector< std::vector< reco::TransientTrack > >	clusterize (const std::vector< reco::TransientTrack > &tracks) const override
	GapClusterizerInZ (const edm::ParameterSet &conf)
std::vector< TransientVertex >	vertices (const std::vector< reco::TransientTrack > &tracks) const
float	zSeparation () const
	~GapClusterizerInZ () override
Public Member Functions inherited from TrackClusterizerInZ
	TrackClusterizerInZ ()
	TrackClusterizerInZ (const edm::ParameterSet &conf)
virtual	~TrackClusterizerInZ ()

Private Attributes
bool	verbose_
float	zSep

Detailed Description

Description: separates event tracks into clusters along the beam line

Definition at line 17 of file GapClusterizerInZ.h.

Constructor & Destructor Documentation

GapClusterizerInZ::GapClusterizerInZ

(

const edm::ParameterSet &

conf

)

Definition at line 21 of file GapClusterizerInZ.cc.

References gather_cfg::cout, edm::ParameterSet::getParameter(), and edm::ParameterSet::getUntrackedParameter().

{
  // some defaults to avoid uninitialized variables
  verbose_= conf.getUntrackedParameter<bool>("verbose", false);
  zSep = conf.getParameter<double>("zSeparation");
  if(verbose_) {std::cout << "TrackClusterizerInZ:  algorithm=gap, zSeparation="<< zSep << std::endl;}
}

GapClusterizerInZ::~GapClusterizerInZ ( )

inlineoverride

Definition at line 31 of file GapClusterizerInZ.h.

References zSep.

{};

Member Function Documentation

vector< vector< reco::TransientTrack > > GapClusterizerInZ::clusterize ( const std::vector< reco::TransientTrack > &  tracks ) const

overridevirtual

Implements TrackClusterizerInZ.

Definition at line 40 of file GapClusterizerInZ.cc.

References funct::abs(), fastPrimaryVertexProducer_cfi::clusters, l1t::tracks, and HIPixelAdaptiveVertex_cfi::zSeparation.

{
  
  vector<reco::TransientTrack> tks = tracks; // copy to be sorted

  vector< vector<reco::TransientTrack> > clusters;
  if (tks.empty()) return clusters;

  // sort in increasing order of z
  stable_sort(tks.begin(), tks.end(), recTrackLessZ);

  // init first cluster
  vector<reco::TransientTrack>::const_iterator it = tks.begin();
  vector <reco::TransientTrack> currentCluster; currentCluster.push_back(*it);

  it++;
  for ( ; it != tks.end(); it++) {

    double zPrev = currentCluster.back().stateAtBeamLine().trackStateAtPCA().position().z();
    double zCurr = (*it).stateAtBeamLine().trackStateAtPCA().position().z();

    if ( abs(zCurr - zPrev) < zSeparation() ) {
      // close enough ? cluster together
      currentCluster.push_back(*it);
    }
    else {
      // store current cluster, start new one
      clusters.push_back(currentCluster);
      currentCluster.clear();
      currentCluster.push_back(*it);
    }
  }

  // store last cluster
  clusters.push_back(currentCluster);

  return clusters;

}

std::vector< TransientVertex > GapClusterizerInZ::vertices

(

const std::vector< reco::TransientTrack > &

tracks

)

const

float GapClusterizerInZ::zSeparation

(

)

const

Definition at line 31 of file GapClusterizerInZ.cc.

{
  return zSep;
}

Member Data Documentation

bool GapClusterizerInZ::verbose_

private

Definition at line 35 of file GapClusterizerInZ.h.

float GapClusterizerInZ::zSep

private

Definition at line 31 of file GapClusterizerInZ.h.

Referenced by ~GapClusterizerInZ().