AliRsnCut:

[u/mrichter/AliRoot.git] / PWG2 / RESONANCES / AliRsnEvent.h

//
// *** Class AliRsnEvent ***
//
// A container for a collection of AliRsnDaughter objects from an event.
// Contains also the primary vertex, useful for some cuts.
// In order to retrieve easily the tracks which have been identified
// as a specific type and charge, there is an array of indexes which
// allows to avoid to loop on all tracks and have only the neede ones.
//
// authors: A. Pulvirenti (email: alberto.pulvirenti@ct.infn.it)
//          M. Vala (email: martin.vala@cern.ch)
//

#ifndef ALIRSNEVENT_H
#define ALIRSNEVENT_H

#include "AliVEvent.h"
#include "AliMCEvent.h"
#include "AliESDEvent.h"
#include "AliAODEvent.h"
#include "AliRsnDaughter.h"

class AliRsnCutPID;
class AliESDtrackCuts;

class AliRsnEvent : public TObject {
public:

   AliRsnEvent(AliVEvent *ref = 0, AliVEvent *refMC = 0);
   AliRsnEvent(const AliRsnEvent& copy);
   AliRsnEvent& operator= (const AliRsnEvent& copy);
   virtual ~AliRsnEvent();

   // basic setters/getters
   void       SetRef(AliVEvent *ref)       {fRef = ref;}
   void       SetRefMC(AliVEvent *refmc)   {fRefMC = refmc;}
   void       SetLeadingIndex(Int_t i)     {fLeading = i;}
   void       SetLocalID(Int_t i)          {fLocalID = i;}
   AliVEvent* GetRef()                     {return fRef;}
   AliVEvent* GetRefMC()                   {return fRefMC;}
   Int_t      GetLeadingIndex() const      {return fLeading;}
   Int_t      GetLeadingParticleID() const {return fLeading;}
   Int_t      GetLocalID() const           {return fLocalID;}

   // getters which convert into allowed input types
   AliESDEvent* GetRefESD()   {if (fRef  ->IsA() == AliESDEvent::Class()) return static_cast<AliESDEvent*>(fRef)  ; else return 0x0;}
   AliAODEvent* GetRefAOD()   {if (fRef  ->IsA() == AliAODEvent::Class()) return static_cast<AliAODEvent*>(fRef)  ; else return 0x0;}
   AliMCEvent*  GetRefMCESD() {if (fRefMC->IsA() == AliMCEvent ::Class()) return static_cast<AliMCEvent*> (fRefMC); else return 0x0;}
   AliAODEvent* GetRefMCAOD() {if (fRefMC->IsA() == AliAODEvent::Class()) return static_cast<AliAODEvent*>(fRefMC); else return 0x0;}
   Bool_t       IsESD()       {return (GetRefESD() != 0x0);}
   Bool_t       IsAOD()       {return (GetRefAOD() != 0x0);}

   // advanced getters
   Double_t         GetVz();
   Int_t            GetMultiplicity(AliESDtrackCuts *cuts = 0x0);

   // setters for a daughter
   Bool_t           SetDaughter(AliRsnDaughter &daughter, Int_t index, AliRsnDaughter::ERefType type = AliRsnDaughter::kTrack);
   Bool_t           SetDaughterMC(AliRsnDaughter &daughter, Int_t index);
   AliRsnDaughter   GetDaughter(Int_t i, AliRsnDaughter::ERefType type = AliRsnDaughter::kTrack);
   AliRsnDaughter   GetDaughterMC(Int_t i);
   Int_t            GetAbsoluteSum();
   Bool_t           ConvertAbsoluteIndex(Int_t index, Int_t &realIndex, AliRsnDaughter::ERefType &type);

   // leading particle stuff
   void             SetLeadingParticle(AliRsnDaughter &leading) {if (fLeading >= 0) SetDaughter(leading, fLeading);}
   Int_t            SelectLeadingParticle(Double_t ptMin = 0.0, AliRsnCutPID *cutPID = 0x0);
   Double_t         GetAverageMomentum(Int_t &count, AliRsnCutPID *cutPID = 0x0);
   Bool_t           GetAngleDistr(Double_t &angleMean, Double_t &angleRMS, AliRsnDaughter reference);

   // statig getters
   static AliRsnEvent    *GetCurrentEvent1()                                 {return fgRsnEvent1;}
   static AliRsnEvent    *GetCurrentEvent2()                                 {return fgRsnEvent2;}
   static void            SetCurrentEvent1(AliRsnEvent *event, Int_t id = 0) {fgRsnEvent1 = event; fgRsnEvent1->SetLocalID(id);}
   static void            SetCurrentEvent2(AliRsnEvent *event, Int_t id = 0) {fgRsnEvent2 = event; fgRsnEvent2->SetLocalID(id);}
   static Bool_t          IsCurrentEvent1()                                  {if (fgRsnEvent1 != 0x0) return kTRUE; return kFALSE;}
   static Bool_t          IsCurrentEvent2()                                  {if (fgRsnEvent2 != 0x0) return kTRUE; return kFALSE;}
   static Bool_t          SameEvent()                                        {if (fgRsnEvent1 == fgRsnEvent2) return kTRUE; return kFALSE;}
   
private:

   Bool_t SetDaughterESDtrack(AliRsnDaughter &target, Int_t index);
   Bool_t SetDaughterAODtrack(AliRsnDaughter &target, Int_t index);
   Bool_t SetDaughterESDv0(AliRsnDaughter &target, Int_t index);
   Bool_t SetDaughterAODv0(AliRsnDaughter &target, Int_t index);
   Bool_t SetDaughterESDcascade(AliRsnDaughter &target, Int_t index);
   Bool_t SetDaughterAODcascade(AliRsnDaughter &target, Int_t index);
   Bool_t SetMCInfoESD(AliRsnDaughter &target);
   Bool_t SetMCInfoAOD(AliRsnDaughter &target);

   AliVEvent   *fRef;         //  pointer to input event
   AliVEvent   *fRefMC;       //  pointer to reference MC event (if any)
   Int_t        fLeading;     //  index of leading track
   Int_t        fLocalID;     //  identification number used locally

   static AliRsnEvent    *fgRsnEvent1;     //! pointer to current event #1 (default current event)
   static AliRsnEvent    *fgRsnEvent2;     //! pointer to current event #2 (different from the other when doing mixing)

   ClassDef(AliRsnEvent, 4);
};

#endif