#include "AliITSrecoV2.h"
class AliESDtrack;
-class AliTPCtrack;
+class AliStrLine;
//_____________________________________________________________________________
class AliITStrackV2 : public AliKalmanTrack {
- friend class AliITStrackerV2;
public:
AliITStrackV2();
- AliITStrackV2(const AliTPCtrack& t) throw (const Char_t *);
AliITStrackV2(AliESDtrack& t,Bool_t c=kFALSE) throw (const Char_t *);
AliITStrackV2(const AliITStrackV2& t);
Int_t PropagateToVertex(Double_t d=0., Double_t x0=0.);
Int_t Propagate(Double_t alpha, Double_t xr);
- Int_t CorrectForMaterial(Double_t d, Double_t x0=21.82);
+ virtual Int_t CorrectForMaterial(Double_t d, Double_t x0=21.82);
Int_t PropagateTo(Double_t xr, Double_t d, Double_t x0=21.82);
+ Double_t PropagateToDCA(AliKalmanTrack *p, Double_t d=0., Double_t x0=0.);
Int_t Update(const AliCluster* cl,Double_t chi2,UInt_t i);
Int_t Improve(Double_t x0,Double_t xyz[3],Double_t ers[3]);
void SetdEdx(Double_t dedx) {fdEdx=dedx;}
void SetDetectorIndex(Int_t i) {SetLabel(i);}
void ResetCovariance();
void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); }
- void UpdateESDtrack(ULong_t flags);
- void SetConstrainedESDtrack(Double_t chi2);
+ void UpdateESDtrack(ULong_t flags) const;
+ AliESDtrack *GetESDtrack() const {return fESDtrack;}
+
Int_t GetDetectorIndex() const {return GetLabel();}
Double_t GetX() const {return fX;}
Double_t GetAlpha()const {return fAlpha;}
Double_t GetSnp() const {return fP2;}
Double_t GetTgl() const {return fP3;}
Double_t GetC() const {return fP4;}
- Double_t
- Get1Pt() const { return (1e-9*TMath::Abs(fP4)/fP4 + fP4)*GetConvConst(); }
+ Double_t Get1Pt() const;
Double_t GetD(Double_t x=0, Double_t y=0) const;
Double_t GetZat(Double_t x=0) const;
void GetExternalCovariance(Double_t cov[15]) const ;
Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
Int_t GetGlobalXYZat(Double_t r,Double_t &x,Double_t &y,Double_t &z) const;
+ void ApproximateHelixWithLine(Double_t xk, AliStrLine *line);
Double_t GetPredictedChi2(const AliCluster *cluster) const;
Int_t Invariant() const;
+
+ void SetExtraCluster(Int_t i, Int_t idx) {fIndex[kMaxLayer+i]=idx;}
+ Int_t GetExtraCluster(Int_t i) const {return fIndex[kMaxLayer+i];}
protected:
+ void GetXYZ(Float_t r[3]) const;
+
Double_t fX; // X-coordinate of this track (reference plane)
Double_t fAlpha; // rotation angle
Double_t fC20, fC21, fC22; // of the
Double_t fC30, fC31, fC32, fC33; // track
Double_t fC40, fC41, fC42, fC43, fC44; // parameters
- Int_t fNUsed; // number of shared clusters
- Int_t fNSkipped; // number of skipped clusters
- Bool_t fReconstructed; // reconstructed - accepted flag
- Float_t fChi2MIP[6]; // MIP chi squres
- UInt_t fIndex[kMaxLayer]; // indices of associated clusters
- Float_t fdEdxSample[4]; // array of dE/dx samples b.b.
- Float_t fDy[6]; //dy in layer
- Float_t fDz[6]; //dz in layer
- Float_t fSigmaY[6]; //sigma y
- Float_t fSigmaZ[6]; //sigma z
- AliESDtrack *fESDtrack; //! pointer to the connected ESD track
-
- ClassDef(AliITStrackV2,3) //ITS reconstructed track
+
+ Int_t fIndex[2*kMaxLayer]; // indices of associated clusters
+ Float_t fdEdxSample[4]; // array of dE/dx samples b.b.
+
+ AliESDtrack *fESDtrack; //! pointer to the connected ESD track
+ ClassDef(AliITStrackV2,5) //ITS reconstructed track
};
inline
// This function return external ITS track representation
//---------------------------------------------------------------------
xr=fX;
- x[0]=GetY(); x[1]=GetZ(); x[2]=GetSnp(); x[3]=GetTgl(); x[4]=Get1Pt();
+ x[0]=GetY(); x[1]=GetZ(); x[2]=GetSnp(); x[3]=GetTgl();
+ x[4]=(TMath::Sign(1e-9,fP4) + fP4)*GetLocalConvConst();
}
inline
q *= TMath::Sqrt((1-s*s)/(1+t*t));
fdEdxSample[i]=q;
}
+
+inline void AliITStrackV2::GetXYZ(Float_t r[3]) const {
+ //---------------------------------------------------------------------
+ // Returns the position of the track in the global coord. system
+ //---------------------------------------------------------------------
+ Double_t cs=TMath::Cos(fAlpha), sn=TMath::Sin(fAlpha);
+ r[0]=fX*cs - fP0*sn; r[1]=fX*sn + fP0*cs; r[2]=fP1;
+}
+
#endif