GsfElectronCoreBaseProducer Class Reference

#include <GsfElectronCoreBaseProducer.h>

Inheritance diagram for GsfElectronCoreBaseProducer:

List of all members.

Public Member Functions
	GsfElectronCoreBaseProducer (const edm::ParameterSet &conf)
virtual	~GsfElectronCoreBaseProducer ()
Static Public Member Functions
static void	fillDescription (edm::ParameterSetDescription &)
Protected Member Functions
void	fillElectronCore (reco::GsfElectronCore *)
void	initEvent (edm::Event &event, const edm::EventSetup &setup)
Protected Attributes
edm::Handle < reco::TrackCollection >	ctfTracksH_
edm::Handle < reco::GsfTrackCollection >	gsfTracksH_
Private Member Functions
std::pair< reco::TrackRef, float >	getCtfTrackRef (const reco::GsfTrackRef &)
Private Attributes
edm::InputTag	ctfTracksTag_
edm::InputTag	gsfTracksTag_

---

Detailed Description

Definition at line 31 of file GsfElectronCoreBaseProducer.h.

---

Constructor & Destructor Documentation

GsfElectronCoreBaseProducer::GsfElectronCoreBaseProducer

(

const edm::ParameterSet &

conf

)

[explicit]

Definition at line 26 of file GsfElectronCoreBaseProducer.cc.

References edm::ParameterSet::getParameter().

 {
  produces<GsfElectronCoreCollection>() ;
  gsfTracksTag_ = config.getParameter<edm::InputTag>("gsfTracks") ;
  ctfTracksTag_ = config.getParameter<edm::InputTag>("ctfTracks");
 }

GsfElectronCoreBaseProducer::~GsfElectronCoreBaseProducer

(

)

[virtual]

Definition at line 33 of file GsfElectronCoreBaseProducer.cc.

 {}

---

Member Function Documentation

void GsfElectronCoreBaseProducer::fillDescription

(

edm::ParameterSetDescription &

desc

)

[static]

Definition at line 20 of file GsfElectronCoreBaseProducer.cc.

References edm::ParameterSetDescription::add().

 {
  desc.add<edm::InputTag>("gsfTracks",edm::InputTag("electronGsfTracks")) ;
  desc.add<edm::InputTag>("ctfTracks",edm::InputTag("generalTracks")) ;
 }

void GsfElectronCoreBaseProducer::fillElectronCore

(

reco::GsfElectronCore *

eleCore

)

[protected]

Definition at line 48 of file GsfElectronCoreBaseProducer.cc.

References reco::GsfElectronCore::gsfTrack(), and reco::GsfElectronCore::setCtfTrack().

Referenced by GsfElectronCoreProducer::produce(), and GsfElectronCoreEcalDrivenProducer::produce().

 {
  const GsfTrackRef & gsfTrackRef = eleCore->gsfTrack() ;

  std::pair<TrackRef,float> ctfpair = getCtfTrackRef(gsfTrackRef) ;
  eleCore->setCtfTrack(ctfpair.first,ctfpair.second) ;
 }

std::pair< TrackRef, float > GsfElectronCoreBaseProducer::getCtfTrackRef

(

const reco::GsfTrackRef &

gsfTrackRef

)

[private]

Definition at line 62 of file GsfElectronCoreBaseProducer.cc.

References abs, TrackingRecHit::all, cmsDriverOptions::counter, dPhi(), reco::HitPattern::getHitPattern(), min, pi, reco::HitPattern::pixelHitFilter(), mathSSE::sqrt(), reco::HitPattern::stripTIBHitFilter(), and reco::HitPattern::stripTIDHitFilter().

 {
  float maxFracShared = 0;
  TrackRef ctfTrackRef = TrackRef() ;
  const TrackCollection * ctfTrackCollection = ctfTracksH_.product() ;

  // get the Hit Pattern for the gsfTrack
  const HitPattern& gsfHitPattern = gsfTrackRef->hitPattern();

  unsigned int counter ;
  TrackCollection::const_iterator ctfTkIter ;
  for ( ctfTkIter = ctfTrackCollection->begin() , counter = 0 ;
        ctfTkIter != ctfTrackCollection->end() ; ctfTkIter++, counter++ )
   {

    double dEta = gsfTrackRef->eta() - ctfTkIter->eta();
    double dPhi = gsfTrackRef->phi() - ctfTkIter->phi();
    double pi = acos(-1.);
    if(std::abs(dPhi) > pi) dPhi = 2*pi - std::abs(dPhi);

    // dont want to look at every single track in the event!
    if(sqrt(dEta*dEta + dPhi*dPhi) > 0.3) continue;

    unsigned int shared = 0 ;
    int gsfHitCounter = 0 ;
    int numGsfInnerHits = 0 ;
    int numCtfInnerHits = 0 ;
    // get the CTF Track Hit Pattern
    const HitPattern& ctfHitPattern = ctfTkIter->hitPattern() ;

    trackingRecHit_iterator elHitsIt ;
    for ( elHitsIt = gsfTrackRef->recHitsBegin() ;
          elHitsIt != gsfTrackRef->recHitsEnd() ;
          elHitsIt++, gsfHitCounter++ )
     {
      if(!((**elHitsIt).isValid()))  //count only valid Hits
       { continue ; }

      // look only in the pixels/TIB/TID
      uint32_t gsfHit = gsfHitPattern.getHitPattern(gsfHitCounter) ;
      if (!(gsfHitPattern.pixelHitFilter(gsfHit) ||
          gsfHitPattern.stripTIBHitFilter(gsfHit) ||
          gsfHitPattern.stripTIDHitFilter(gsfHit) ) )
       { continue ; }

      numGsfInnerHits++ ;

      int ctfHitsCounter = 0 ;
      numCtfInnerHits = 0 ;
      trackingRecHit_iterator ctfHitsIt ;
      for ( ctfHitsIt = ctfTkIter->recHitsBegin() ;
            ctfHitsIt != ctfTkIter->recHitsEnd() ;
            ctfHitsIt++, ctfHitsCounter++ )
       {
        if(!((**ctfHitsIt).isValid())) //count only valid Hits!
         { continue ; }

      uint32_t ctfHit = ctfHitPattern.getHitPattern(ctfHitsCounter);
      if( !(ctfHitPattern.pixelHitFilter(ctfHit) ||
            ctfHitPattern.stripTIBHitFilter(ctfHit) ||
            ctfHitPattern.stripTIDHitFilter(ctfHit) ) )
       { continue ; }

      numCtfInnerHits++ ;

        if( (**elHitsIt).sharesInput(&(**ctfHitsIt),TrackingRecHit::all) )
         {
          shared++ ;
          break ;
         }

       } //ctfHits iterator

     } //gsfHits iterator

    if ((numGsfInnerHits==0)||(numCtfInnerHits==0))
     { continue ; }

    if ( static_cast<float>(shared)/std::min(numGsfInnerHits,numCtfInnerHits) > maxFracShared )
     {
      maxFracShared = static_cast<float>(shared)/std::min(numGsfInnerHits, numCtfInnerHits);
      ctfTrackRef = TrackRef(ctfTracksH_,counter);
     }

   } //ctfTrack iterator

  return make_pair(ctfTrackRef,maxFracShared) ;
 }

void GsfElectronCoreBaseProducer::initEvent	(	edm::Event &	event,
		const edm::EventSetup &	setup
	)		[protected]

Definition at line 42 of file GsfElectronCoreBaseProducer.cc.

Referenced by GsfElectronCoreProducer::produce(), and GsfElectronCoreEcalDrivenProducer::produce().

 {
  event.getByLabel(gsfTracksTag_,gsfTracksH_) ;
  event.getByLabel(ctfTracksTag_,ctfTracksH_) ;
 }

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Member Data Documentation

edm::Handle<reco::TrackCollection> GsfElectronCoreBaseProducer::ctfTracksH_ [protected]

Definition at line 46 of file GsfElectronCoreBaseProducer.h.

edm::InputTag GsfElectronCoreBaseProducer::ctfTracksTag_ [private]

Definition at line 53 of file GsfElectronCoreBaseProducer.h.

edm::Handle<reco::GsfTrackCollection> GsfElectronCoreBaseProducer::gsfTracksH_ [protected]

Definition at line 45 of file GsfElectronCoreBaseProducer.h.

Referenced by GsfElectronCoreProducer::produce(), and GsfElectronCoreEcalDrivenProducer::produce().

edm::InputTag GsfElectronCoreBaseProducer::gsfTracksTag_ [private]

Definition at line 52 of file GsfElectronCoreBaseProducer.h.