AliFMDMCTrackELoss.h

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#ifndef ALIFMDMCTRACKELOSS_MC
#define ALIFMDMCTRACKELOSS_MC
#include "AliForwardUtil.h"
#include "AliBaseMCTrackDensity.h"
#include "AliFMDFloatMap.h"
class TH1D;
class TH2;
class TH2D;
class AliESDFMD;
class TClonesArray;
class TTree;

class AliFMDMCTrackELoss : public AliBaseMCTrackDensity 
{
public:
  AliFMDMCTrackELoss();
  AliFMDMCTrackELoss(const char* name);
  AliFMDMCTrackELoss(const AliFMDMCTrackELoss& o){;}
  AliFMDMCTrackELoss& operator=(const AliFMDMCTrackELoss& o){return *this;}
  virtual ~AliFMDMCTrackELoss() {}

  void SetUseTree(Bool_t use=true) { fUseTree = use; }
  void SetMaxConsequtiveStrips(UShort_t n) { fMaxConsequtiveStrips = n; }
  /* @} */

  Bool_t Calculate(const AliESDFMD&    esd, 
       const AliMCEvent&   event, 
       const TVector3&     ip, 
       Double_t            cent);
  void CreateOutputObjects(TList* list);

  void Clear(Option_t* opt="");
  AliFMDFloatMap& GetPrimaries() { return fPrimaries; }
  const AliFMDFloatMap& GetPrimaries() const { return fPrimaries; }
  AliFMDFloatMap& GetSecondaries() { return fSecondaries; }
  const AliFMDFloatMap& GetSecondaries() const { return fSecondaries; }
  AliFMDFloatMap& GetAll() { return fAll; }
  const AliFMDFloatMap& GetAll() const { return fAll; }
  AliFMDFloatMap& GetEta() { return fEta; }
  const AliFMDFloatMap& GetEta() const { return fEta; }

  TTree* GetTree() const { return fTree; }
  TClonesArray* GetHits() const { return fHits; }

  TH2* GetBetaGammadEdx() const { return fBetaGammadEdx; }
  TH2* GetBetaGammaEta() const { return fBetaGammaEta; } 
  TH2* GetDEdxEta() const { return fDEdxEta; }
  /* @} */

  void Print(Option_t* option="") const;


  struct Hit : public TObject { 
    Double_t fGamma;
    Double_t fBeta;
    Double_t fEta;
    Double_t fDe;
    Double_t fDx;
    UInt_t   fDetId;
    Int_t    fPdg;
    Bool_t   fPrimary;
    mutable UShort_t fDetector; 
    mutable Char_t   fRing;     
    mutable UShort_t fSector;   
    mutable UShort_t fStrip;    
    
    Hit();
    void Decode() const; 
    UShort_t D() const { Decode(); return fDetector; }
    Char_t   R() const { Decode(); return fRing;     }
    UShort_t S() const { Decode(); return fSector;   }
    UShort_t T() const { Decode(); return fStrip;    }
    Double_t DeDx() const { return (fDx > 0 ? fDe/fDx : 0); }
    Double_t Eta() const { return fEta; }
    Double_t BetaGamma() const { return fBeta*fGamma; }
    UInt_t AbsPdg() const;
    Bool_t IsPrimary() const { return fPrimary; }
    Bool_t IsPion() const { return AbsPdg() == 211; }
    Bool_t IsKaon() const { return AbsPdg() == 321; }
    Bool_t IsProton() const { return AbsPdg() == 2212; }
    Bool_t IsElectron() const { return AbsPdg() == 11 || AbsPdg() == 13; }

    ClassDef(Hit,1);
  };
  struct Event  { 
    Double_t fIpZ;
    Double_t fCent;
  };
    
protected:
  Int_t GetDetectorId() const;
  AliTrackReference* ProcessRef(AliMCParticle* particle, 
        const AliMCParticle* mother, 
        AliTrackReference* ref);
  void BeginTrackRefs();
  void EndTrackRefs(Int_t nRefs);
  Double_t StoreParticle(AliMCParticle*       particle, 
       const AliMCParticle* mother,
       AliTrackReference*   ref) const;
  //__________________________________________________________________
  mutable struct State 
  {
    Double_t angle;            // Angle 
    UShort_t oldDetector;      // Last detector
    Char_t   oldRing;          // Last ring
    UShort_t oldSector;        // Last sector
    UShort_t oldStrip;         // Last strip 
    UShort_t startStrip;       // First strip 
    UShort_t nRefs;            // Number of references
    UShort_t nStrips;          // Number of strips 
    UShort_t count;            // Count of hit strips 
    Double_t de;               // Summed energy loss 
    Double_t dx;               // Summed dx 
    AliTrackReference* longest; 

    void Clear(Bool_t alsoCount=false);
    State& operator=(const State& o);
  } fState; 
  Event fEvent;
    

  UShort_t   fMaxConsequtiveStrips; // Max 'cluster' size
  Bool_t     fUseTree;             // Whether to make an nTree 
  TClonesArray* fHits; 
  TTree*     fTree;  
  TH1D*      fNr;                   // Number of track-refs per cluster
  TH1D*      fNt;                   // Size of cluster in strips 
  TH1D*      fNc;                   // Number of clusters per track
  TH2D*      fNcr;                  // Number of clusters per track
  TH2*       fBetaGammadEdx;
  TH2*       fBetaGammaEta; 
  TH2*       fDEdxEta;
  mutable AliFMDFloatMap fPrimaries;        // Cache of eloss per primary 
  mutable AliFMDFloatMap fSecondaries;      // Cache of eloss per secondary
  mutable AliFMDFloatMap fAll;              // Cache of eloss for all 
  AliFMDFloatMap fEta;              // Cache of pseudo-rapidity


  ClassDef(AliFMDMCTrackELoss,1); // Calculate track-ref density
};

#endif
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