1 #ifndef ALIITSTRACKV2_H
2 #define ALIITSTRACKV2_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
6 //-------------------------------------------------------------------------
9 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
10 // dEdx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
11 //-------------------------------------------------------------------------
13 #include <AliKalmanTrack.h>
14 #include "AliITSRecoParam.h"
15 #include "AliITSgeomTGeo.h"
19 //_____________________________________________________________________________
20 class AliITStrackV2 : public AliKalmanTrack {
23 AliITStrackV2(AliESDtrack& t,Bool_t c=kFALSE) throw (const Char_t *);
24 AliITStrackV2(const AliITStrackV2& t);
25 ~AliITStrackV2(){fESDtrack=0;}
27 Bool_t CorrectForMeanMaterial(Double_t xOverX0, Double_t xTimesRho,
28 Bool_t anglecorr=kFALSE) {
29 return AliExternalTrackParam::CorrectForMeanMaterial(xOverX0,xTimesRho,GetMass(),anglecorr);
31 Bool_t CorrectForMaterial(Double_t d, Double_t x0=AliITSRecoParam::GetX0Air()) {
32 // deprecated: use CorrectForMeanMaterial instead
33 return AliExternalTrackParam::CorrectForMaterial(d,x0,GetMass());
35 Bool_t PropagateTo(Double_t xr, Double_t d, Double_t x0=AliITSRecoParam::GetX0Air());
36 Bool_t PropagateToTGeo(Double_t xToGo, Int_t nstep, Double_t &xOverX0, Double_t &xTimesRho);
37 Bool_t PropagateToTGeo(Double_t xToGo, Int_t nstep=1) {
38 Double_t dummy1,dummy2; return PropagateToTGeo(xToGo,nstep,dummy1,dummy2);
40 Double_t GetPredictedChi2(const AliCluster *cluster) const;
41 Bool_t Update(const AliCluster *cl, Double_t chi2, Int_t i);
43 Bool_t PropagateToVertex(const AliESDVertex *v,Double_t d=0.,Double_t x0=0.);
44 Bool_t Propagate(Double_t alpha, Double_t xr);
45 Bool_t MeanBudgetToPrimVertex(Double_t xyz[3], Double_t step, Double_t &d) const;
46 Bool_t Improve(Double_t x0,Double_t xyz[3],Double_t ers[3]);
48 void SetdEdx(Double_t dedx) {fdEdx=dedx;}
49 void SetSampledEdx(Float_t q, Int_t i);
50 Float_t GetSampledEdx(Int_t i) const {return fdEdxSample[i];}
51 void CookdEdx(Double_t low=0., Double_t up=0.51);
52 void SetDetectorIndex(Int_t i) {SetLabel(i);}
53 void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); }
54 void UpdateESDtrack(ULong_t flags) const;
56 AliESDtrack *GetESDtrack() const {return fESDtrack;}
58 Int_t GetDetectorIndex() const {return GetLabel();}
59 Double_t GetdEdx() const {return fdEdx;}
60 Double_t GetPIDsignal() const {return GetdEdx();}
61 Double_t GetC() const {return AliExternalTrackParam::GetC(GetBz());}
62 Double_t GetD(Double_t x, Double_t y) const {
63 return AliExternalTrackParam::GetD(x,y,GetBz());
65 void GetDZ(Double_t xv, Double_t yv, Double_t zv, Float_t dz[2]) const {
66 return AliExternalTrackParam::GetDZ(xv,yv,zv,GetBz(),dz);
69 Bool_t GetGlobalXYZat(Double_t xloc,Double_t &x,Double_t &y,Double_t &z) const;
70 Bool_t GetPhiZat(Double_t r,Double_t &phi,Double_t &z) const;
71 Bool_t GetLocalXat(Double_t r,Double_t &xloc) const;
73 Int_t Compare(const TObject *o) const;
74 Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
75 Bool_t Invariant() const;
77 void SetExtraCluster(Int_t i, Int_t idx) {fIndex[AliITSgeomTGeo::kNLayers+i]=idx;}
78 Int_t GetExtraCluster(Int_t i) const {return fIndex[AliITSgeomTGeo::kNLayers+i];}
81 Double_t GetBz() const ;
82 Double_t fdEdx; // dE/dx
84 static const Int_t fgkWARN; //! used for debugging purposes
85 Float_t fdEdxSample[4]; // array of dE/dx samples b.b.
87 Int_t fIndex[2*AliITSgeomTGeo::kNLayers]; // indices of associated clusters
89 AliESDtrack *fESDtrack; //! pointer to the connected ESD track
92 AliITStrackV2 &operator=(const AliITStrackV2 &tr);
93 ClassDef(AliITStrackV2,7) //ITS reconstructed track
97 void AliITStrackV2::SetSampledEdx(Float_t q, Int_t i) {
98 //----------------------------------------------------------------------
99 // This function stores dEdx sample corrected for the track segment length
100 // Origin: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
101 //----------------------------------------------------------------------
104 Double_t s=GetSnp(), t=GetTgl();
105 q *= TMath::Sqrt((1-s*s)/(1+t*t));