/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/Calibration/IsolatedParticles/src/ChargeIsolationExtra.cc

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#include "Calibration/IsolatedParticles/interface/ChargeIsolationExtra.h"
#include "Calibration/IsolatedParticles/interface/ChargeIsolation.h"
#include "Calibration/IsolatedParticles/interface/CaloPropagateTrack.h"
#include "Calibration/IsolatedParticles/interface/FindDistCone.h"
#include "Calibration/IsolatedParticles/interface/MatrixECALDetIds.h"
#include "Calibration/IsolatedParticles/interface/MatrixHCALDetIds.h"
#include "TrackingTools/TrajectoryState/interface/FreeTrajectoryState.h"

#include<iostream>

namespace spr{

  double chargeIsolation(const edm::Event& iEvent, const edm::EventSetup& iSetup, CaloNavigator<DetId>& theNavigator, reco::TrackCollection::const_iterator trkItr, edm::Handle<reco::TrackCollection> trkCollection, const CaloSubdetectorGeometry* gEB, const CaloSubdetectorGeometry* gEE, TrackDetectorAssociator& associator, TrackAssociatorParameters& parameters_, int ieta, int iphi, std::string theTrackQuality, bool debug) {
  
    double maxNearP = -1.0;
    reco::TrackBase::TrackQuality trackQuality_=reco::TrackBase::qualityByName(theTrackQuality);

    // const DetId anyCell,
    reco::TrackCollection::const_iterator trkItr2;
    for (trkItr2 = trkCollection->begin(); trkItr2 != trkCollection->end(); ++trkItr2) {

      const reco::Track* pTrack2 = &(*trkItr2);

      bool   trkQuality  = pTrack2->quality(trackQuality_);
      if ( (trkItr2 != trkItr) && trkQuality )  {
      
        const FreeTrajectoryState fts2 = associator.getFreeTrajectoryState(iSetup, *pTrack2);
        TrackDetMatchInfo info2 = associator.associate(iEvent, iSetup, fts2, parameters_);
        const GlobalPoint point2(info2.trkGlobPosAtEcal.x(),info2.trkGlobPosAtEcal.y(),info2.trkGlobPosAtEcal.z());

        if (info2.isGoodEcal ) {
          if (std::abs(point2.eta())<1.479) {
            const DetId anyCell = gEB->getClosestCell(point2);
            if (!spr::chargeIsolation(anyCell,theNavigator,ieta, iphi)) {
              if (maxNearP<pTrack2->p()) maxNearP=pTrack2->p();
            }
          } else {
            const DetId anyCell = gEE->getClosestCell(point2);
            if(!spr::chargeIsolation(anyCell,theNavigator,ieta, iphi)) {
              if (maxNearP<pTrack2->p()) maxNearP=pTrack2->p();
            }
          }
        } //info2.isGoodEcal
      }
    }
    return maxNearP;
  }

  //===========================================================================================================

  bool chargeIsolation(const DetId anyCell,CaloNavigator<DetId>& navigator,int ieta,int iphi) {

    bool isIsolated = false;

    DetId thisDet;

    for (int dx = -ieta; dx < ieta+1; ++dx) {
      for (int dy = -iphi; dy < iphi+1; ++dy) {

        thisDet = navigator.offsetBy(dx, dy);
        navigator.home();
      
        if (thisDet != DetId(0)) {
          if (thisDet == anyCell) {
            isIsolated = false;
            return isIsolated;
          }
        }
      }
    }
    return isIsolated;
  }

  //===========================================================================================================

  double chargeIsolationEcal(const edm::Event& iEvent, const edm::EventSetup& iSetup, const DetId& coreDet, reco::TrackCollection::const_iterator trkItr, edm::Handle<reco::TrackCollection> trkCollection, const CaloGeometry* geo, const CaloTopology* caloTopology, TrackDetectorAssociator& associator, TrackAssociatorParameters& parameters_, int ieta, int iphi, std::string& theTrackQuality, bool debug) {
  
    const EcalBarrelGeometry *barrelGeom = (dynamic_cast< const EcalBarrelGeometry *> (geo->getSubdetectorGeometry(DetId::Ecal,EcalBarrel)));
    const EcalEndcapGeometry *endcapGeom = (dynamic_cast< const EcalEndcapGeometry *> (geo->getSubdetectorGeometry(DetId::Ecal,EcalEndcap)));

    std::vector<DetId> vdets = spr::matrixECALIds(coreDet, ieta, iphi, geo, caloTopology, debug);
    if (debug) std::cout << "chargeIsolation:: eta/phi/dets " << ieta << " " << iphi << " " << vdets.size() << std::endl;

    double maxNearP = -1.0;
    reco::TrackBase::TrackQuality trackQuality_=reco::TrackBase::qualityByName(theTrackQuality);

    // const DetId anyCell,
    reco::TrackCollection::const_iterator trkItr2;
    for (trkItr2 = trkCollection->begin(); trkItr2 != trkCollection->end(); ++trkItr2) {

      const reco::Track* pTrack2 = &(*trkItr2);

      bool   trkQuality  = pTrack2->quality(trackQuality_);
      if ( (trkItr2 != trkItr) && trkQuality )  {
      
        const FreeTrajectoryState fts2 = associator.getFreeTrajectoryState(iSetup, *pTrack2);
        TrackDetMatchInfo info2 = associator.associate(iEvent, iSetup, fts2, parameters_);
        const GlobalPoint point2(info2.trkGlobPosAtEcal.x(),info2.trkGlobPosAtEcal.y(),info2.trkGlobPosAtEcal.z());

        if (info2.isGoodEcal ) {
          if (std::abs(point2.eta())<1.479) {
            const DetId anyCell = barrelGeom->getClosestCell(point2);
            if (!spr::chargeIsolation(anyCell,vdets)) {
              if (maxNearP<pTrack2->p()) maxNearP=pTrack2->p();
            }
          } else {
            const DetId anyCell = endcapGeom->getClosestCell(point2);
            if (!spr::chargeIsolation(anyCell,vdets)) {
              if (maxNearP<pTrack2->p()) maxNearP=pTrack2->p();
            }
          }
        } //info2.isGoodEcal
      }
    }
    return maxNearP;
  }

  //===========================================================================================================

  double chargeIsolationHcal(const edm::Event& iEvent, const edm::EventSetup& iSetup, reco::TrackCollection::const_iterator trkItr, edm::Handle<reco::TrackCollection> trkCollection, const DetId ClosestCell, const HcalTopology* topology, const CaloSubdetectorGeometry* gHB, TrackDetectorAssociator& associator, TrackAssociatorParameters& parameters_, int ieta, int iphi, std::string& theTrackQuality, bool debug) {

    std::vector<DetId> dets(1,ClosestCell);

    if (debug) std::cout << (HcalDetId) ClosestCell << std::endl;

    std::vector<DetId> vdets = spr::matrixHCALIds(dets, topology, ieta, iphi, false, debug);
    std::vector<DetId>::iterator it;  
  
    if (debug) {
      for (unsigned int i=0; i<vdets.size(); i++) {
        std::cout << "HcalDetId in " <<2*ieta+1 << "x" << 2*iphi+1 << " " << (HcalDetId) vdets[i] << std::endl;
      }
    }

    double maxNearP = -1.0;
    reco::TrackBase::TrackQuality trackQuality_=reco::TrackBase::qualityByName(theTrackQuality);
  
    reco::TrackCollection::const_iterator trkItr2;
    for (trkItr2 = trkCollection->begin(); trkItr2 != trkCollection->end(); ++trkItr2) {
    
      const reco::Track* pTrack2 = &(*trkItr2);
    
      bool   trkQuality  = pTrack2->quality(trackQuality_);
      if ( (trkItr2 != trkItr) && trkQuality )  {
        const FreeTrajectoryState fts2 = associator.getFreeTrajectoryState(iSetup, *pTrack2);
        TrackDetMatchInfo info2 = associator.associate(iEvent, iSetup, fts2, parameters_);
        const GlobalPoint point2(info2.trkGlobPosAtHcal.x(),info2.trkGlobPosAtHcal.y(),info2.trkGlobPosAtHcal.z());

        if (debug) {
          std::cout << "Track2 (p,eta,phi) " << pTrack2->p() << " " << pTrack2->eta() << " " << pTrack2->phi() << std::endl;
        }

        if (info2.isGoodHcal ) {
          const DetId anyCell = gHB->getClosestCell(point2);
          if (!spr::chargeIsolation(anyCell,vdets)) {   
            if(maxNearP<pTrack2->p())  maxNearP=pTrack2->p();
          }
          if (debug){
            std::cout << "maxNearP " << maxNearP << " thisCell " 
                      << (HcalDetId)anyCell << " (" 
                      << info2.trkGlobPosAtHcal.x() << ","
                      << info2.trkGlobPosAtHcal.y() <<","
                      << info2.trkGlobPosAtHcal.z() <<")" << std::endl;
          }
        }
      }
    }
    return maxNearP;
  }

}