ProjectedSiStripRecHit2D.h

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#ifndef ProjectedSiStripRecHit2D_H
#define ProjectedSiStripRecHit2D_H

#include "DataFormats/TrackerRecHit2D/interface/SiStripRecHit2D.h"

// #include<iostream>

class ProjectedSiStripRecHit2D final  : public TrackerSingleRecHit  {
public:
  
  inline static bool isMono(GeomDet const & gdet, GeomDet const & sdet) {
    return (sdet.geographicalId()-gdet.geographicalId())==2;
  }
  
  
  typedef TrackerSingleRecHit Base;

  ProjectedSiStripRecHit2D() : theOriginalDet(nullptr) {}

  ProjectedSiStripRecHit2D( const LocalPoint& pos, const LocalError& err, 
                GeomDet const & idet,
                SiStripRecHit2D const & originalHit) :
    TrackerSingleRecHit(pos, err, idet, 
            isMono(idet,*originalHit.det()) ? trackerHitRTTI::projMono: trackerHitRTTI::projStereo,
            originalHit.omniCluster()),
    theOriginalDet(originalHit.det()) {
//      std::cout << getRTTI() << ' ' << originalHit.rawId() << ' ' << idet.geographicalId().rawId() << ' ' << originalId() << std::endl;
      assert(originalId()==originalHit.rawId());
    }
    
  template<typename CluRef>
  ProjectedSiStripRecHit2D( const LocalPoint& pos, const LocalError& err, 
                GeomDet const & idet, GeomDet const & originalDet,
                CluRef const&  clus) :
    TrackerSingleRecHit(pos, err, idet, 
            isMono(idet,originalDet) ? trackerHitRTTI::projMono: trackerHitRTTI::projStereo,
            clus),
    theOriginalDet(&originalDet) {
    assert(originalId()==originalDet.geographicalId());
    }


  void setDet(const GeomDet & idet) override;

  bool canImproveWithTrack() const override {return true;}

  ProjectedSiStripRecHit2D* clone() const override {return new ProjectedSiStripRecHit2D( *this); }

  
  int dimension() const override {return 2;}
  void getKfComponents( KfComponentsHolder & holder ) const override { getKfComponents2D(holder); }
  
  typedef OmniClusterRef::ClusterStripRef         ClusterRef;
  ClusterRef cluster()  const { return cluster_strip() ; }
  const GeomDetUnit* originalDet() const {
    return static_cast<const GeomDetUnit*>(theOriginalDet);
  }
  unsigned int originalId() const { return trackerHitRTTI::projId(*this);}
  
  // not useful only for backward compatibility
  SiStripRecHit2D originalHit() const { return SiStripRecHit2D(originalId(), omniClusterRef());}
  
  
  std::vector<const TrackingRecHit*> recHits() const override{
    std::vector<const TrackingRecHit*> rechits;
    return rechits;
  }
  std::vector<TrackingRecHit*> recHits() override {
    std::vector<TrackingRecHit*> rechits;
    return rechits;
  }
  

private:
  // double dispatch
  ProjectedSiStripRecHit2D * clone(TkCloner const& cloner, TrajectoryStateOnSurface const& tsos) const override {
    return cloner(*this,tsos).release();
  }
#ifndef __GCCXML__
   ConstRecHitPointer cloneSH(TkCloner const& cloner, TrajectoryStateOnSurface const& tsos) const override {
    return cloner.makeShared(*this,tsos);
  }
#endif

private:
  const GeomDet* theOriginalDet;

};

#endif