mixed event normalization optional

[u/mrichter/AliRoot.git] / PWGGA / GammaConv / AliAnalysisTaskdPhi.h

////////////////////////////////////////////////
//--------------------------------------------- 
// Class doing conversion gamma dPhi correlations
// Gamma Conversion analysis
//---------------------------------------------
////////////////////////////////////////////////

#ifndef AliAnalysisTaskdPhi_cxx
#define AliAnalysisTaskdPhi_cxx

#include "AliAnalysisTaskSE.h"

#include <TAxis.h>
#include <TH3I.h>
#include <THnSparse.h>
//#include <AliAnalysisFilter.h>
#include <iostream>
#include <AliAnaConvCorrBase.h>
#include <AliLog.h>
#include <AliAnalysisCuts.h>
class AliAnaConvCorrPion;
class AliConversionCuts;
class AliConversionMesonCuts;
class AliV0ReaderV1;
class TList;
class TH2I;
//class THnSparseF;

using namespace std;

class AliAnalysisTaskdPhi : public AliAnalysisTaskSE {

public:
  AliAnalysisTaskdPhi(const char *name="slindal_dPhi");
  virtual ~AliAnalysisTaskdPhi();

  virtual void   UserCreateOutputObjects();
  virtual void   SetUpCorrObjects();
  virtual void   SetUpCorrAxes(AliAnaConvCorrBase * corr);
  virtual void   UserExec(Option_t *option);
  virtual void   Terminate(Option_t *);

  TAxis& GetAxistPt()     { return fAxistPt;      }
  TAxis& GetAxiscPt()     { return fAxiscPt;      }
  TAxis& GetAxisdEta()    { return fAxisdEta;     }
  TAxis& GetAxisTrigEta() { return fAxisTrigEta;  }
  TAxis& GetAxisAssEta()  { return fAxisAssEta;   }
  TAxis& GetAxisPhi()     { return fAxisPhi;      }
  TAxis& GetAxisZ()       { return fAxisZ;        }
  TAxis& GetAxisCent()    { return fAxisCent;     }
  TAxis& GetAxisPiMass()  { return fAxisPiM;      }

  void SetV0Filter(AliConversionCuts * filter) { fV0Filter = filter; }
  
  void SetMesonFilter(AliConversionMesonCuts * filter) { fMesonFilter = filter; }
  void SetPhotonFilter(AliConversionCuts * filter) { fPhotonFilter = filter; }
  void SetV0Reader(AliV0ReaderV1 * reader) { fV0Reader = reader; }
  void SaveReaderHists(Bool_t save = kTRUE) { fSaveReaderHists = save; }
  AliAnalysisCuts * GetTrackCuts() const { return fTrackCuts; }
  void SetTrackCuts( AliAnalysisCuts * cuts) { if (fTrackCuts) delete fTrackCuts; fTrackCuts = cuts; }
  
protected:
  
  TClonesArray * GetConversionGammas(Bool_t isAOD);

private:
  
  THnSparseF * CreateSparse(TString nameString, TString titleString, TList * axesList);
  Int_t GetBin(TAxis &axis, Double_t value);
  THnSparseF * GetMEHistogram(Int_t binz, Int_t binc, TObjArray * array);
  AliAnaConvCorrBase * GetCorrObject(Int_t binz, Int_t binc, TObjArray * array);
  void Process(TObjArray * gammas, TObjArray * tracks, Float_t cent, Float_t vtxz);
  void FindDeltaAODBranchName(AliVEvent * event);
  
  TList * fHistograms; //histograms

  AliV0ReaderV1 * fV0Reader; // V0 reader
  Bool_t fSaveReaderHists; // save histograms from v0 reader
  AliConversionCuts * fV0Filter; //additional v0 filter on top of v0 reader
  AliConversionCuts * fPhotonFilter; //additional v0 filter for photons only
  AliConversionMesonCuts * fMesonFilter; //additional meson filter behind fv0filter
  AliAnalysisCuts * fTrackCuts; //Cuts for corr tracks

  TH2I * hMEvents; //event histrogam
  TH2I * hTrackCent; //event histrogam

  AliAnaConvCorrBase * fPhotonCorr; //photon
  AliAnaConvCorrPion * fPionCorr; //poin

  TString fDeltaAODBranchName; //comment

  TAxis fAxistPt; //comment
  TAxis fAxiscPt; //comment
  TAxis fAxisdEta; //comment
  TAxis fAxisTrigEta; //comment
  TAxis fAxisAssEta; //comment
  TAxis fAxisPhi; //comment
  TAxis fAxisCent; //comment
  TAxis fAxisZ; //comment
  TAxis fAxisPiM; //comment

  Bool_t fDoPhoton; // do photon analysis?
  
  AliAnalysisTaskdPhi(const AliAnalysisTaskdPhi&); // not implemented
  AliAnalysisTaskdPhi& operator=(const AliAnalysisTaskdPhi&); // not implemented
  
  ClassDef(AliAnalysisTaskdPhi, 6); 
};

inline THnSparseF * AliAnalysisTaskdPhi::GetMEHistogram(Int_t binz, Int_t binc, TObjArray * array) {
  ///Get Mixed Event histogram
  if(binz < 0 || binz > fAxisZ.GetNbins()) {
	cout << "error out of z axis range: " << binz << endl; 
	return NULL;
  }  
  if(binc < 0 || binc >= fAxisCent.GetNbins()) {
	cout << "error out of centraliy axis range: " << binc << endl; 
	return NULL;
  }  
  
  TObjArray * arrayc = static_cast<TObjArray*>(array->At(binc));
  THnSparseF * histogram = static_cast<THnSparseF*>(arrayc->At(binz));
  return histogram;
}


inline AliAnaConvCorrBase * AliAnalysisTaskdPhi::GetCorrObject(Int_t binz, Int_t binc, TObjArray * array) {
  ///Get correlation object
  if(binc < 0 || binz < 0) {
	  AliError("We have a bad bin!!!");
	  return NULL;
	}

  TObjArray * arrayc = static_cast<TObjArray*>(array->At(binc));
  AliAnaConvCorrBase * corrmaker = static_cast<AliAnaConvCorrBase*>(arrayc->At(binz));
  return corrmaker;
}

inline Int_t AliAnalysisTaskdPhi::GetBin(TAxis & axis, Double_t value) {
  //Return bin - 1 if within range, else return -1
  Int_t bin = axis.FindFixBin(value);
  

  bin = (bin > 0 && bin <= axis.GetNbins()) ? bin -1 : -1;
  return bin;
}

#endif