// -------------------------------------------------------------------------
// -----                       FairHit header file                      -----
// -----          Created 08/09/04  by V. Friese / D.Bertini           -----
// -------------------------------------------------------------------------

#ifndef FAIRHIT_H
#define FAIRHIT_H

#include "FairBasePoint.h"
#include "TVector3.h"

/**
 * Abstract base class for reconstructed hits in the FAIR detectors.
  **@author V.Friese <v.friese@gsi.de>
  **@author D.Bertini <d.bertini@gsi.de>
  **@author M.Al-Turany <m.al-turany@gsi.de>
 */
class FairHit : public FairBasePoint
{

 public:

  /** Default constructor **/
  FairHit();


  /** Constructor with hit parameters **/
  FairHit(Int_t detID, TVector3& pos, TVector3& dpos, Int_t index);


  /** Destructor **/
  virtual ~FairHit();


  /** Accessors **/
  Double_t GetDx()            const { return fDx;                     };
  Double_t GetDy()            const { return fDy;                     };
  Double_t GetDz()            const { return fDz;                     };
  Int_t    GetRefIndex()      const { return fRefIndex;               };
 void PositionError(TVector3& dpos) const;


  /** Modifiers **/
  void SetDx(Double_t dx) { fDx = dx; }
  void SetDy(Double_t dy) { fDy = dy; }
  void SetDz(Double_t dz) { fDz = dz; }
  void SetDxyz(Double_t dx, Double_t dy, Double_t dz);
  void SetPositionError(const TVector3& dpos);
  void SetRefIndex(Int_t index)   { fRefIndex = index; }


  /*** Output to screen */
  virtual void Print(const Option_t* opt = 0) const {;}



 protected:

  Double32_t fDx, fDy, fDz;   // Errors of position [cm]
  Int_t      fRefIndex;       // Index of FairMCPoint for this hit



  ClassDef(FairHit,1);


};


inline void FairHit::PositionError(TVector3& dpos) const {
  dpos.SetXYZ(fDx, fDy, fDz); 
}


inline void FairHit::SetDxyz(Double_t dx, Double_t dy, Double_t dz) {
  fDx = dx;
  fDy = dy;
  fDz = dz;
}


inline void FairHit::SetPositionError(const TVector3& dpos) {
  fDx = dpos.X();
  fDy = dpos.Y();
  fDz = dpos.Z();
}


#endif