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

/* $Id$ */

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  TRD cluster                                                              //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include "AliCluster.h"  

class AliTRDcluster : public AliCluster {

 public:

  enum { kInChamber = BIT(14)
       , kShared    = BIT(15)
  };
  enum { kMaskedLeft = BIT(0)
      , kMaskedCenter= BIT(1)
      , kMaskedRight = BIT(2)
  };

  AliTRDcluster();
  AliTRDcluster(Int_t det, Float_t q, Float_t *pos, Float_t *sig
              , Int_t *tracks, Char_t npads, Short_t *signals
              , UChar_t col, UChar_t row, UChar_t time
              , Char_t timebin, Float_t center, UShort_t volid);
  AliTRDcluster(const AliTRDcluster &c);
  virtual ~AliTRDcluster() {};

  virtual void     AddTrackIndex(Int_t *i); 

          Bool_t   IsInChamber() const             { return TestBit(kInChamber);       }
          Bool_t   IsMasked() const                { return fClusterMasking ? kTRUE : kFALSE; }
          Bool_t   IsShared() const                { return TestBit(kShared);          }
          Bool_t   IsUsed() const                  { return (fQ < 0) ? kTRUE : kFALSE; }

          UChar_t  GetPadMaskedPosition() const    { return fClusterMasking & 7; }
          UChar_t  GetPadMaskedStatus() const      { return fClusterMasking >> 3; }
          Int_t    GetDetector() const             { return fDetector;      }
          Int_t    GetLocalTimeBin() const         { return fLocalTimeBin;  }
          Float_t  GetQ() const                    { return fQ;             }
          Int_t    GetNPads() const                { return fNPads;         }
          Float_t  GetCenter() const               { return fCenter;        }
          Int_t    GetPadCol() const               { return fPadCol;        }
          Int_t    GetPadRow() const               { return fPadRow;        }
          Int_t    GetPadTime() const              { return fPadTime;       }
          Short_t *GetSignals()                    { return fSignals;       }
          Float_t  GetSumS() const;

          void     SetLocalTimeBin(Char_t t)       { fLocalTimeBin = t;     }
          void     SetInChamber(Bool_t in = kTRUE) { SetBit(kInChamber,in); }
          void     SetPadMaskedPosition(UChar_t position);
          void     SetPadMaskedStatus(UChar_t status);
          void     SetShared(Bool_t sh  = kTRUE)   { SetBit(kShared,sh);    }
          void     Use(Int_t = 0)                  { fQ = -fQ;              }

  protected:
    UChar_t fPadCol;         //  Central pad number in column direction
    UChar_t fPadRow;         //  Central pad number in row direction
    UChar_t fPadTime;        //  Uncalibrated time bin number
    Char_t  fLocalTimeBin;   //  T0-calibrated time bin number
    UChar_t fNPads;          //  Number of pads in cluster
    UChar_t fClusterMasking; //  Bit field containing cluster status information;
    Short_t fDetector;       //  TRD detector number
    Short_t fSignals[7];     //  Signals in the cluster
    Float_t fQ;              //  Amplitude 
    Float_t fCenter;         //  Center of the cluster relative to the pad 

    ClassDef(AliTRDcluster, 6)        //  Cluster for the TRD
};
#endif