TSiTrackerMultiRecHit.h

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#ifndef TSiTrackerMultiRecHit_h
#define TSiTrackerMultiRecHit_h

#include "TrackingTools/TransientTrackingRecHit/interface/TransientTrackingRecHit.h"
#include "DataFormats/TrackerRecHit2D/interface/SiTrackerMultiRecHit.h"
#include "TrackingTools/TransientTrackingRecHit/interface/HelpertRecHit2DLocalPos.h"
#include "Geometry/CommonDetUnit/interface/GeomDetUnit.h"

/*
A TransientTrackingRecHit for the SiTrackerMultiRecHit
*/

class TSiTrackerMultiRecHit : public TransientTrackingRecHit {
    public:
    //virtual ~TSiTrackerMultiRecHit() {delete theHitData;}
    virtual ~TSiTrackerMultiRecHit() {}
    
    virtual AlgebraicVector parameters() const {return theHitData.parameters();}
    virtual AlgebraicSymMatrix parametersError() const {
        return HelpertRecHit2DLocalPos().parError( theHitData.localPositionError(), *det());
            //return theHitData.parametersError();
    }

        virtual void getKfComponents( KfComponentsHolder & holder ) const {
            HelpertRecHit2DLocalPos().getKfComponents(holder, theHitData, *det()); 
        }
    virtual DetId geographicalId() const {return theHitData.geographicalId();}
    virtual AlgebraicMatrix projectionMatrix() const {return theHitData.projectionMatrix();}
    virtual int dimension() const {return theHitData.dimension();}

        virtual LocalPoint localPosition() const {return theHitData.localPosition();}
    virtual LocalError localPositionError() const {return theHitData.localPositionError();}

    virtual const TrackingRecHit * hit() const {return &theHitData;};
    const SiTrackerMultiRecHit* specificHit() const {return &theHitData;}

    virtual bool isValid() const{return theHitData.isValid();}

    virtual std::vector<const TrackingRecHit*> recHits() const {
        return theHitData.recHits();
    } 
    virtual std::vector<TrackingRecHit*> recHits() {
            return theHitData.recHits();
    }   

    virtual const GeomDetUnit* detUnit() const;

    virtual bool canImproveWithTrack() const {return true;}

    virtual RecHitPointer clone(const TrajectoryStateOnSurface& ts) const;

        virtual ConstRecHitContainer transientHits() const {return theComponents;};

    static RecHitPointer build( const GeomDet * geom, const SiTrackerMultiRecHit* rh, 
                    const ConstRecHitContainer& components, float annealing=1.){
        return RecHitPointer(new TSiTrackerMultiRecHit( geom, rh, components, annealing));
    }
    private:
    SiTrackerMultiRecHit theHitData;
    //holds the TransientTrackingRecHit components of the MultiRecHit with up-to-date weights 
    ConstRecHitContainer theComponents;   
    
    TSiTrackerMultiRecHit(const GeomDet * geom, const SiTrackerMultiRecHit* rh,  
                  const ConstRecHitContainer& components, float annealing):
            TransientTrackingRecHit(geom,1, annealing), theHitData(*rh), theComponents(components){}
      
    virtual TSiTrackerMultiRecHit* clone() const {
            return new TSiTrackerMultiRecHit(*this);
    }

};      

#endif