CbmHit.h

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// -------------------------------------------------------------------------
// -----                     CbmHit header file                        -----
// -----                 Created 16/11/07  by V. Friese                -----
// -------------------------------------------------------------------------
 
#ifndef CBMHIT_H
#define CBMHIT_H
 
#include "FairHit.h"
 
/**
 ** Abstract base class for hits used for tracking in CBM.
 ** Derives from FairHit.
 ** Additional member is the covariance of x and y.
 ** Derived classes have to implement the pure virtual method GetStationNr()
 **
 **@author V.Friese <v.friese@gsi.de>
 **@since 16/11/07
 */
 
class CbmHit : public FairHit
{
 
  public:
    /** Default constructor **/
    CbmHit();
 
    /** Constructor with hit parameters
     *@param detID  Unique detector identifier
     *@param pos    Position vector [cm]
     *@param dpos   Error of position vector [cm]
     *@param covXY  Covariance of x and y [cm**2]
     *@param index  Reference index
     **/
    CbmHit(Int_t detID, TVector3& pos, TVector3& dpos, Double_t covXY, Int_t index);
 
    /** Destructor **/
    virtual ~CbmHit();
 
    /** Accessors **/
    Double_t GetCovXY() const { return fCovXY; }
    virtual Int_t GetStationNr() const = 0;
 
    /** Output to screen **/
    virtual void Print(const Option_t* opt = 0) const;
 
  protected:
    Double32_t fCovXY;   // Covariance of x and y coordinates
 
    ClassDef(CbmHit, 1);
};
 
#endif