HBTAN/AliHBTEvent.h

   1 #ifndef ALIHBTEvent_H
   2 #define ALIHBTEvent_H
   3 //_________________________________________________________________________
   4 ///////////////////////////////////////////////////////////////////////////
   5 //                                                                       //
   6 // class AliHBTEvent                                                     //
   7 //                                                                       //
   8 // This class stores HBT perticles for one event                         //
   9 // more info: http://alisoft.cern.ch/people/skowron/analyzer/index.html  //
  10 //                                                                       //
  11 ///////////////////////////////////////////////////////////////////////////
  12
  13 #include <TObject.h>
  14
  15 class AliHBTParticle;
  16 class TParticle;
  17
  18 class AliHBTEvent: public TObject
  19  {
  20   public:
  21     AliHBTEvent();
  22     virtual ~AliHBTEvent();
  23
  24     AliHBTParticle* GetParticle(Int_t n);  //gets particle
  25     AliHBTParticle* GetParticleSafely(Int_t n); //gets particle with index check
  26
  27     void    AddParticle(AliHBTParticle* hbtpart); //adds particle to the event
  28     void    AddParticle(TParticle* part); //adds particle to the event
  29     void    AddParticle(Int_t pdg, Double_t px, Double_t py, Double_t pz, Double_t etot,
  30                         Double_t vx, Double_t vy, Double_t vz, Double_t time);
  31
  32     Int_t   GetNumberOfParticles() const;
  33     void    Reset(); //deletes all entries
  34     void    SetOwner(Bool_t owns = kTRUE){ fOwner = owns; }
  35     Bool_t  IsOwner() const {return fOwner;}
  36
  37   protected:
  38     Int_t  fSize;       //!current size of the array
  39     AliHBTParticle ** fParticles; //!array of pointers to the particles
  40     Int_t  fNParticles; //!number of particles in Event
  41     Bool_t fOwner;      //flag if that event owns the
  42     void   Expand();    //expands the array if necessary
  43
  44   private:
  45     const static UInt_t fgkInitEventSize; //initial number of the array
  46                                          //if expanded, this size is used also
  47   public:
  48     ClassDef(AliHBTEvent,1)
  49  };
  50 /**************************************************************************/
  51
  52 inline
  53 AliHBTParticle* AliHBTEvent::GetParticle(Int_t n)
  54  {
  55  //Gets particle without boundary check
  56    return fParticles[n];
  57  }
  58
  59 /**************************************************************************/
  60
  61 inline
  62 Int_t  AliHBTEvent::GetNumberOfParticles() const
  63  {
  64  //reurns number of particles in this event
  65    return fNParticles;
  66  }
  67
  68 #endif