EmulatedME0Segment.h

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#ifndef DataFormats_MuonReco_EmulatedME0Segment_h
#define DataFormats_MuonReco_EmulatedME0Segment_h

#include <DataFormats/TrackingRecHit/interface/RecSegment.h>

#include <iosfwd>

class EmulatedME0Segment : public RecSegment {

public:

 EmulatedME0Segment() : theOrigin(0,0,0), theLocalDirection(0,0,0), theCovMatrix(4,0),theChi2(0.) {}
    
    EmulatedME0Segment(const LocalPoint& origin, const LocalVector& direction, const AlgebraicSymMatrix& errors, const double chi2);
  
    ~EmulatedME0Segment() override;

    //--- Base class interface
    EmulatedME0Segment* clone() const override { return new EmulatedME0Segment(*this); }

    LocalPoint localPosition() const override { return theOrigin; }
    LocalError localPositionError() const override ;
    
    LocalVector localDirection() const override { return theLocalDirection; }
    LocalError localDirectionError() const override ;

    AlgebraicVector parameters() const override;

    AlgebraicSymMatrix parametersError() const override { return theCovMatrix; }

    AlgebraicMatrix projectionMatrix() const override;

    std::vector<const TrackingRecHit*> recHits() const override {return std::vector<const TrackingRecHit*> (); }

    std::vector<TrackingRecHit*> recHits() override {return std::vector<TrackingRecHit*>();}

    double chi2() const override { return theChi2; }

    int dimension() const override { return 4; }

    int degreesOfFreedom() const override { return -1;}  //Maybe  change later?

    //--- Extension of the interface
        
    int nRecHits() const { return 0;}  //theME0RecHits.size(); }        

    void print() const;     
    
 private:
    
    //std::vector<ME0RecHit2D> theME0RecHits;
    //  CAVEAT: these "Local" paramaters will in fact be filled by global coordinates
    LocalPoint theOrigin;   // in chamber frame - the GeomDet local coordinate system
    LocalVector theLocalDirection; // in chamber frame - the GeomDet local coordinate system
    AlgebraicSymMatrix theCovMatrix; // the covariance matrix
    double theChi2;
};

std::ostream& operator<<(std::ostream& os, const EmulatedME0Segment& seg);

#endif // ME0RecHit_EmulatedME0Segment_h