JetTracksAssociationDRCalo.h

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// \class JetTracksAssociationDRCalo
// Associate jets with tracks by simple "delta R" criteria
// Fedor Ratnikov (UMd), Aug. 28, 2007
// $Id: JetTracksAssociationDRCalo.h,v 1.4.2.1 2009/02/23 12:59:13 bainbrid Exp $

#ifndef RecoJets_JetAssociationAlgorithms_JetTracksAssociationDRCalo_h
#define RecoJets_JetAssociationAlgorithms_JetTracksAssociationDRCalo_h

#include "RecoJets/JetAssociationAlgorithms/interface/JetTracksAssociationDR.h"
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "DataFormats/Math/interface/Point3D.h"
#include <vector>

class MagneticField;
class Propagator;

class JetTracksAssociationDRCalo : public JetTracksAssociationDR {
  
 public:
  
  explicit JetTracksAssociationDRCalo( double dr_threshold );
  
  ~JetTracksAssociationDRCalo();

  void produce( Association*,
        const Jets&,
        const Tracks&,
        const TrackQuality&,
        const MagneticField&,
        const Propagator& );

  void produce( Association*,
        const JetRefs&,
        const TrackRefs&,
        const MagneticField&,
        const Propagator& );
  
  // Associates tracks to the given jet
  void associateTracksToJet( reco::TrackRefVector&,
                 const reco::Jet&,
                 const TrackRefs& );
  
  // Calculates track impact points at calorimeter face
  void propagateTracks( const TrackRefs&,
            const MagneticField&,
            const Propagator& );
  
  static math::XYZPoint propagateTrackToCalorimeter( const reco::Track&,
                             const MagneticField&,
                             const Propagator& );
  
 private:

  JetTracksAssociationDRCalo();

  static GlobalPoint propagateTrackToCalo( const reco::Track&,
                       const MagneticField&,
                       const Propagator& );
  
  struct ImpactPoint {
    unsigned index;
    double eta;
    double phi;
  };
  
  std::vector<ImpactPoint> propagatedTracks_;
  
};

#endif // RecoJets_JetAssociationAlgorithms_JetTracksAssociationDRCalo_h