AliAnalysisTaskEmcalLight.h

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#ifndef ALIANALYSISTASKEMCALLIGHT_H
#define ALIANALYSISTASKEMCALLIGHT_H
/* Copyright(c) 1998-2016, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

class TClonesArray;
class TString;
class TList;
class AliEmcalParticle;
class AliMCParticle;
class AliVCluster;
class AliVTrack;
class AliVParticle;
class AliVCaloCells;
class TH1;
class TProfile;
class AliEMCALGeometry;
class AliGenPythiaEventHeader;
class AliVCaloTrigger;
class AliAnalysisUtils;
class AliEMCALTriggerPatchInfo;
class AliAODTrack;

#include "Rtypes.h"

#include "AliParticleContainer.h"
#include "AliMCParticleContainer.h"
#include "AliTrackContainer.h"
#include "AliClusterContainer.h"

#include "AliAnalysisTaskSE.h"
class AliAnalysisTaskEmcalLight : public AliAnalysisTaskSE {
 public:

  enum EBeamType_t {
    kNA       = -1,
    kpp       = 0, 
    kAA       = 1, 
    kpA       = 2  
  };

  enum EDataType_t {
    kAOD = 0,
    kESD = 1
  };

  AliAnalysisTaskEmcalLight();
  AliAnalysisTaskEmcalLight(const char *name, Bool_t histo=kFALSE);
  virtual ~AliAnalysisTaskEmcalLight();

  // Containers
  AliParticleContainer       *AddParticleContainer(const char *n);
  AliTrackContainer          *AddTrackContainer(const char *n);
  AliMCParticleContainer     *AddMCParticleContainer(const char *n);
  AliClusterContainer        *AddClusterContainer(const char *n);
  void                        AdoptParticleContainer(AliParticleContainer* cont)    { fParticleCollArray.Add(cont)                        ; }
  void                        AdoptTrackContainer(AliTrackContainer* cont)          { AdoptParticleContainer(cont)                        ; }
  void                        AdoptMCParticleContainer(AliMCParticleContainer* cont){ AdoptParticleContainer(cont)                        ; }
  void                        AdoptClusterContainer(AliClusterContainer* cont)      { fClusterCollArray.Add(cont)                         ; }
  AliParticleContainer       *GetParticleContainer(Int_t i=0)         const;
  AliParticleContainer       *GetParticleContainer(const char* name)  const;
  AliClusterContainer        *GetClusterContainer(Int_t i=0)          const;
  AliClusterContainer        *GetClusterContainer(const char* name)   const;
  AliMCParticleContainer     *GetMCParticleContainer(Int_t i=0)               const { return dynamic_cast<AliMCParticleContainer*>(GetParticleContainer(i))   ; }
  AliMCParticleContainer     *GetMCParticleContainer(const char* name)        const { return dynamic_cast<AliMCParticleContainer*>(GetParticleContainer(name)); }
  AliTrackContainer          *GetTrackContainer(Int_t i=0)                    const { return dynamic_cast<AliTrackContainer*>(GetParticleContainer(i))        ; }
  AliTrackContainer          *GetTrackContainer(const char* name)             const { return dynamic_cast<AliTrackContainer*>(GetParticleContainer(name))     ; }
  void                        RemoveParticleContainer(Int_t i=0)                    { fParticleCollArray.RemoveAt(i)                      ; } 
  void                        RemoveClusterContainer(Int_t i=0)                     { fClusterCollArray.RemoveAt(i)                       ; } 

  // Other input data
  void                        SetCaloCellsName(const char *n)                       { fCaloCellsName     = n                              ; }
  void                        SetCaloTriggerPatchInfoName(const char *n)            { fCaloTriggerPatchInfoName = n                       ; }
  void                        SetCaloTriggersName(const char *n)                    { fCaloTriggersName  = n                              ; }
  void                        SetCentralityEstimator(const char *c)                 { fCentEst           = c                              ; }
  void                        SetIsPythia(Bool_t i)                                 { fIsPythia          = i                              ; }
  void                        SetForceBeamType(EBeamType_t f)                       { fForceBeamType     = f                              ; }

  // Task configuration
  void                        SetUseNewCentralityEstimation(Bool_t b)               { fUseNewCentralityEstimation = b                     ; }
  void                        SetMakeGeneralHistograms(Bool_t g)                    { fGeneralHistograms = g                              ; }
  void                        SetNeedEmcalGeom(Bool_t n)                            { fNeedEmcalGeom     = n                              ; }
  void                        SetNCentBins(Int_t n)                                 { fNcentBins         = n                              ; }

  // Event selection
  void                        SetTriggerSelectionBitMap(UInt_t t)                   { fTriggerSelectionBitMap = t                         ; }
  void                        SetCentRange(Double_t min, Double_t max)              { fMinCent           = min  ; fMaxCent = max          ; }
  void                        SetVzRange(Double_t min, Double_t max)                { fMinVz             = min  ; fMaxVz   = max          ; }
  void                        SetZvertexDiffValue(Double_t cut)                     { fZvertexDiff       = cut                            ; }
  void                        SetMinPtTrack(Double_t min)                           { fMinPtTrack        = min                            ; }
  void                        SetMinNTrack(Int_t min)                               { fMinNTrack         = min                            ; }
  void                        SetMinPtTrackInEmcal(Double_t min)                    { fMinPtTrackInEmcal = min                            ; }
  void                        SetPtHardBin(Int_t pt)                                { fSelectPtHardBin   = pt                             ; }
  void                        AddAcceptedTriggerClass(const char* trigClass)        { fAcceptedTriggerClasses.Add(new TObjString(trigClass)); }
  void                        AddRejectedTriggerClass(const char* trigClass)        { fRejectedTriggerClasses.Add(new TObjString(trigClass)); }
  void                        ClearAcceptedTriggerClasses()                         { fAcceptedTriggerClasses.Clear()                     ; }
  void                        ClearRejectedTriggerClasses()                         { fRejectedTriggerClasses.Clear()                     ; }

 protected:  
  void                        SetRejectionReasonLabels(TAxis* axis);
  void                        AddObjectToEvent(TObject *obj, Bool_t attempt = kFALSE);
  TClonesArray               *GetArrayFromEvent(const char *name, const char *clname=0);
  EBeamType_t                 GetBeamType();
  Bool_t                      PythiaInfoFromFile(const char* currFile, Float_t &fXsec, Float_t &fTrials, Int_t &pthard);
  Bool_t                      IsTrackInEmcalAcceptance(AliVParticle* part, Double_t edges=0.9) const;

  // Overloaded AliAnalysisTaskSE methods
  void                        UserCreateOutputObjects();
  void                        UserExec(Option_t *option);
  Bool_t                      UserNotify();

  // Virtual functions, to be overloaded in derived classes
  virtual void                ExecOnce();
  virtual Bool_t              FillGeneralHistograms();
  virtual Bool_t              IsEventSelected();
  virtual Bool_t              RetrieveEventObjects();
  virtual Bool_t              FillHistograms()                  { return kTRUE                 ; }
  virtual Bool_t              Run()                             { return kTRUE                 ; }
    
  // Static utilities
  static void                 GetEtaPhiDiff(const AliVTrack *t, const AliVCluster *v, Double_t &phidiff, Double_t &etadiff);
  static Byte_t               GetTrackType(const AliVTrack *t);
  static Byte_t               GetTrackType(const AliAODTrack *aodTrack, UInt_t filterBit1, UInt_t filterBit2);
  static Double_t             DeltaPhi(Double_t phia, Double_t phib, Double_t rMin = -TMath::Pi()/2, Double_t rMax = 3*TMath::Pi()/2);
  static Double_t*            GenerateFixedBinArray(Int_t n, Double_t min, Double_t max);
  static void                 GenerateFixedBinArray(Int_t n, Double_t min, Double_t max, Double_t* array);
  static Double_t             GetParallelFraction(AliVParticle* part1, AliVParticle* part2);
  static Double_t             GetParallelFraction(const TVector3& vect1, AliVParticle* part2);

  static Double_t             fgkEMCalDCalPhiDivide;       

  // Task configuration
  EBeamType_t                 fForceBeamType;              
  Bool_t                      fGeneralHistograms;          
  Bool_t                      fCreateHisto;                
  Bool_t                      fNeedEmcalGeom;              
  Int_t                       fNcentBins;                  
  Bool_t                      fUseNewCentralityEstimation; 

  // Input data
  Bool_t                      fIsPythia;                   
  TString                     fCaloCellsName;              
  TString                     fCaloTriggersName;           
  TString                     fCaloTriggerPatchInfoName;   
  TString                     fCentEst;                    

  TObjArray                   fParticleCollArray;          
  TObjArray                   fClusterCollArray;           

  // Event selection
  UInt_t                      fTriggerSelectionBitMap;     
  Double_t                    fMinCent;                    
  Double_t                    fMaxCent;                    
  Double_t                    fMinVz;                      
  Double_t                    fMaxVz;                      
  Double_t                    fZvertexDiff;                
  Double_t                    fMinPtTrack;                 
  Int_t                       fMinNTrack;                  
  Double_t                    fMinPtTrackInEmcal;          
  Int_t                       fSelectPtHardBin;            
  TObjArray                   fAcceptedTriggerClasses;     
  TObjArray                   fRejectedTriggerClasses;     

  // Service fields
  Bool_t                      fInitialized;                
  EDataType_t                 fDataType;                   
  AliEMCALGeometry           *fGeom;                       
  AliVCaloCells              *fCaloCells;                  
  AliVCaloTrigger            *fCaloTriggers;               
  TClonesArray               *fTriggerPatchInfo;           
  Double_t                    fCent;                       
  Int_t                       fCentBin;                    
  Double_t                    fEPV0;                       
  Double_t                    fEPV0A;                      
  Double_t                    fEPV0C;                      
  Double_t                    fVertex[3];                  
  Double_t                    fVertexSPD[3];               
  Int_t                       fNVertCont;                  
  Int_t                       fNVertSPDCont;               
  ULong_t                     fFiredTriggerBitMap;         
  TString                     fFiredTriggerClasses;        
  EBeamType_t                 fBeamType;                   
  AliGenPythiaEventHeader    *fPythiaHeader;               
  Double_t                    fPtHard;                     
  Int_t                       fPtHardBin;                  
  Int_t                       fNTrials;                    
  Float_t                     fXsection;                   

  // Output
  TList                      *fOutput;                     
  TH1                        *fHistEventCount;             
  TH1                        *fHistTrialsAfterSel;         
  TH1                        *fHistEventsAfterSel;         
  TProfile                   *fHistXsectionAfterSel;       
  TH1                        *fHistTrials;                 
  TH1                        *fHistEvents;                 
  TProfile                   *fHistXsection;               
  TH1                        *fHistPtHard;                 
  TH1                        *fHistCentrality;             
  TH1                        *fHistZVertex;                
  TH1                        *fHistEventPlane;             
  TH1                        *fHistEventRejection;         
  TH1                        *fHistTriggerClasses;         

 private:
  AliAnalysisTaskEmcalLight(const AliAnalysisTaskEmcalLight&);            // not implemented
  AliAnalysisTaskEmcalLight &operator=(const AliAnalysisTaskEmcalLight&); // not implemented

  ClassDef(AliAnalysisTaskEmcalLight, 1);
};

inline Double_t AliAnalysisTaskEmcalLight::DeltaPhi(Double_t phia, Double_t phib, Double_t rangeMin, Double_t rangeMax)
{
  Double_t dphi = -999;
  const Double_t tpi = TMath::TwoPi();
  
  if (phia < 0)         phia += tpi;
  else if (phia > tpi) phia -= tpi;
  if (phib < 0)         phib += tpi;
  else if (phib > tpi) phib -= tpi;
  dphi = phib - phia;
  if (dphi < rangeMin)      dphi += tpi;
  else if (dphi > rangeMax) dphi -= tpi;
  
  return dphi;
}

inline void AliAnalysisTaskEmcalLight::GenerateFixedBinArray(Int_t n, Double_t min, Double_t max, Double_t* array)
{
  Double_t binWidth = (max-min)/n;
  array[0] = min;
  for (Int_t i = 1; i <= n; i++) {
    array[i] = array[i-1]+binWidth;
  }
}

inline Double_t* AliAnalysisTaskEmcalLight::GenerateFixedBinArray(Int_t n, Double_t min, Double_t max)
{
  Double_t *array = new Double_t[n+1];
  GenerateFixedBinArray(n, min, max, array);
  return array;
}

#endif