If the TRD geometry is not stored in the file, get it from gAlice

[u/mrichter/AliRoot.git] / TRD / AliTRDhit.h

#ifndef ALITRDHIT_H
#define ALITRDHIT_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

/* $Id: AliTRDhit.h,v */

////////////////////////////////////////////////
//  Hit class for the TRD                     //
////////////////////////////////////////////////

#include "AliHit.h"

//_____________________________________________________________________________
class AliTRDhit : public AliHit {

 public:

  AliTRDhit();
  AliTRDhit(Int_t shunt, Int_t track, Int_t det, Float_t *hits, Int_t q);
  virtual ~AliTRDhit();

          Int_t  GetDetector() const         { return fDetector; };
          Int_t  GetCharge() const           { return fQ;        };

          void   SetX(Float_t x)             { fX        =   x; }
          void   SetY(Float_t y)             { fY        =   y; }
          void   SetZ(Float_t z)             { fZ        =   z; }
          void   SetDetector(Int_t det)      { fDetector = det; }
          void   SetQ(Int_t q)               { fQ        =   q; }

          Bool_t FromDrift() const           { return TestBit(kDrift);         };
          Bool_t FromAmplification() const   { return TestBit(kAmplification); };
          Bool_t FromTRphoton() const        { return (fQ < 0);                };

          void   SetDrift()                  { SetBit(kDrift);         };
          void   SetAmplification()          { SetBit(kAmplification); };
          void   SetTRphoton()               { SetBit(kTRphoton);      };

 protected:

  enum {
    kDrift         = 0x00000001,    // Hit is from the drift region
    kAmplification = 0x00000002,    // Hit is from the amplification region
    kTRphoton      = 0x00000004,    // Hit is from a TR photon
    kTest          = 0x00000008     // Hit is a special test hit
  };

  UShort_t     fDetector;           // TRD detector number
  Short_t      fQ;                  // Charge created by a hit. TR signals are negative.

  ClassDef(AliTRDhit,3)             // Hit for the Transition Radiation Detector

};

#endif