DTHitPairForFit.h

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#ifndef DTSegment_DTHitPairForFit_h
#define DTSegment_DTHitPairForFit_h

/* Base Class Headers */

/* Collaborating Class Declarations */
#include "FWCore/Framework/interface/ESHandle.h"
#include "Geometry/DTGeometry/interface/DTGeometry.h"
#include "DataFormats/DTRecHit/interface/DTRecHit1DPair.h"
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "Geometry/DTGeometry/interface/DTSuperLayer.h"

/* C++ Headers */

/* ====================================================================== */

/* Class DTHitPairForFit Interface */

class DTHitPairForFit{

  public:

    DTHitPairForFit(const DTRecHit1DPair& pair,
                    const DTSuperLayer& sl,
                    const edm::ESHandle<DTGeometry>& dtGeom) ;

    ~DTHitPairForFit() ;

/* Operations */ 
    
    LocalPoint localPosition(DTEnums::DTCellSide s) const;

    LocalPoint leftPos() const { return theLeftPos; }

    LocalPoint rightPos() const { return theRightPos; }

    // Returns the LocalError
    LocalError localPositionError() const { return theError; }

    const DTWireId & id() const { return theWireId; }

    float digiTime() const {return theDigiTime;}

    std::pair<bool,bool> isCompatible(const LocalPoint& posIni, const LocalVector &dirIni) const;
    
    bool operator<(const DTHitPairForFit& hit) const ; 

    bool operator==(const DTHitPairForFit& hit) const ; 

  protected:

  private:
    LocalPoint theLeftPos ;         // left hit pos in SL ref frame
    LocalPoint theRightPos ;        // right hit pos in SL ref frame
    LocalError theError;            // it's the same for left and right
    DTWireId  theWireId;
    float theDigiTime;             // the time of the corresp. digi
//    int theLayerNumber;             // the layer number

};

std::ostream& operator<<(std::ostream& out, const DTHitPairForFit& hit) ;
#endif // DTSegment_DTHitPairForFit_h