/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_5/src/Calibration/IsolatedParticles/interface/CaloPropagateTrack.h

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#ifndef CalibrationIsolatedParticlesCaloPropagateTrack_h
#define CalibrationIsolatedParticlesCaloPropagateTrack_h

#include <cmath>
#include <vector>
#include <string>

#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/DetId/interface/DetId.h"
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "DataFormats/HepMCCandidate/interface/GenParticleFwd.h"
#include "DataFormats/HepMCCandidate/interface/GenParticle.h"
#include "DataFormats/TrackReco/interface/Track.h"
#include "DataFormats/TrackReco/interface/TrackFwd.h"

//sim track
#include "SimDataFormats/Track/interface/SimTrack.h"
#include "SimDataFormats/Track/interface/SimTrackContainer.h"
#include "SimDataFormats/Vertex/interface/SimVertex.h"
#include "SimDataFormats/Vertex/interface/SimVertexContainer.h"
#include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"
#include "SimGeneral/HepPDTRecord/interface/ParticleDataTable.h"

#include "MagneticField/Engine/interface/MagneticField.h"
#include "Geometry/CaloGeometry/interface/CaloGeometry.h"
#include "Geometry/CaloGeometry/interface/CaloSubdetectorGeometry.h"

#include "FWCore/Framework/interface/ESHandle.h"

namespace spr{

  struct propagatedTrack {
    propagatedTrack() {ok=false;}
    bool                ok;
    math::XYZPoint      point;
    GlobalVector        direction;
  };

  struct propagatedTrackID {
    propagatedTrackID() {ok=false; okECAL=false; okHCAL=false;}
    bool                                  ok, okECAL, okHCAL;
    DetId                                 detIdECAL, detIdHCAL, detIdEHCAL;
    double                                etaECAL, etaHCAL;
    double                                phiECAL, phiHCAL;
    reco::TrackCollection::const_iterator trkItr;
  };

  struct propagatedTrackDirection {
    propagatedTrackDirection() {ok=false; okECAL=false; okHCAL=false;}
    bool                                  ok, okECAL, okHCAL;
    DetId                                 detIdECAL, detIdHCAL, detIdEHCAL;
    GlobalPoint                           pointECAL, pointHCAL;
    GlobalVector                          directionECAL, directionHCAL;
    reco::TrackCollection::const_iterator trkItr;
  };

  struct propagatedGenTrackID {
    propagatedGenTrackID() {
      ok=okECAL=okHCAL=false;
      charge=pdgId=0;
    }
    bool                                  ok, okECAL, okHCAL;
    DetId                                 detIdECAL, detIdHCAL, detIdEHCAL;
    GlobalPoint                           pointECAL, pointHCAL;
    GlobalVector                          directionECAL, directionHCAL;
    int                                   charge, pdgId;
    HepMC::GenEvent::particle_const_iterator trkItr;
  };

  struct propagatedGenParticleID {
    propagatedGenParticleID() {
      ok=okECAL=okHCAL=false;
      charge=pdgId=0;
    }
    bool                                  ok, okECAL, okHCAL;
    DetId                                 detIdECAL, detIdHCAL, detIdEHCAL;
    GlobalPoint                           pointECAL, pointHCAL;
    GlobalVector                          directionECAL, directionHCAL;
    int                                   charge, pdgId;
    reco::GenParticleCollection::const_iterator trkItr;
  };

  struct trackAtOrigin {
    trackAtOrigin() {ok=false;}
    bool                                  ok;
    int                                   charge;
    GlobalPoint                           position;
    GlobalVector                          momentum;
  };

  // Returns a vector of DetID's of closest cell on the ECAL/HCAL surface of
  // all the tracks in the collection. Also saves a boolean if extrapolation
  // is satisfactory
  std::vector<spr::propagatedTrackID> propagateCALO(edm::Handle<reco::TrackCollection>& trkCollection, const CaloGeometry* geo, const MagneticField* bField, std::string & theTrackQuality, bool debug=false);
  void propagateCALO(edm::Handle<reco::TrackCollection>& trkCollection, const CaloGeometry* geo, const MagneticField* bField, std::string & theTrackQuality, std::vector<spr::propagatedTrackID>& vdets, bool debug=false);
  void propagateCALO(edm::Handle<reco::TrackCollection>& trkCollection, const CaloGeometry* geo, const MagneticField* bField, std::string & theTrackQuality, std::vector<spr::propagatedTrackDirection>& trkDir, bool debug=false);
  std::vector<spr::propagatedGenTrackID> propagateCALO(const HepMC::GenEvent * genEvent, edm::ESHandle<ParticleDataTable>& pdt, const CaloGeometry* geo, const MagneticField* bField, double etaMax=3.0, bool debug=false);
  std::vector<spr::propagatedGenParticleID> propagateCALO(edm::Handle<reco::GenParticleCollection>& genParticles, edm::ESHandle<ParticleDataTable>& pdt, const CaloGeometry* geo, const MagneticField* bField, double etaMax=3.0, bool debug=false);
  spr::propagatedTrackDirection propagateCALO(unsigned int thisTrk, edm::Handle<edm::SimTrackContainer>& SimTk, edm::Handle<edm::SimVertexContainer>& SimVtx, const CaloGeometry* geo, const MagneticField* bField, bool debug=false);

  // Propagate tracks to the ECAL surface and optionally returns the 
  // extrapolated point (and the track direction at point of extrapolation)
  spr::propagatedTrack propagateTrackToECAL(const reco::Track*, const MagneticField*, bool debug=false);
  spr::propagatedTrack propagateTrackToECAL(unsigned int thisTrk, edm::Handle<edm::SimTrackContainer>& SimTk, edm::Handle<edm::SimVertexContainer>& SimVtx, const MagneticField*, bool debug=false);
  std::pair<math::XYZPoint,bool> propagateECAL(const reco::Track*, const MagneticField*, bool debug=false);
  std::pair<math::XYZPoint,bool> propagateECAL(const GlobalPoint& vertex, const GlobalVector& momentum, int charge, const MagneticField*, bool debug=false);

  // Propagate tracks to the HCAL surface and optionally returns the 
  // extrapolated point (and the track direction at point of extrapolation)
  spr::propagatedTrack propagateTrackToHCAL(const reco::Track*, const MagneticField*, bool debug=false);
  spr::propagatedTrack propagateTrackToHCAL(unsigned int thisTrk, edm::Handle<edm::SimTrackContainer>& SimTk, edm::Handle<edm::SimVertexContainer>& SimVtx, const MagneticField*, bool debug=false);
  std::pair<math::XYZPoint,bool> propagateHCAL(const reco::Track*, const MagneticField*, bool debug=false);
  std::pair<math::XYZPoint,bool> propagateHCAL(const GlobalPoint& vertex, const GlobalVector& momentum, int charge, const MagneticField*, bool debug=false);

  // Propagate the track to the end of the tracker and returns the extrapolated
  // point and optionally the length of the track upto the end
  std::pair<math::XYZPoint,bool> propagateTracker(const reco::Track*, const MagneticField*, bool debug=false);
  std::pair<math::XYZPoint,double> propagateTrackerEnd(const reco::Track*, const MagneticField*, bool debug=false);

  spr::propagatedTrack propagateCalo(const GlobalPoint& vertex, const GlobalVector& momentum, int charge, const MagneticField*, float zdist, float radius, float corner, bool debug=false);

  // Gives the vertex and momentum of a SimTrack
  spr::trackAtOrigin simTrackAtOrigin(unsigned int thisTrk, edm::Handle<edm::SimTrackContainer>& SimTk, edm::Handle<edm::SimVertexContainer>& SimVtx, bool debug=false);

}
#endif