3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
9 //-------------------------------------------------------
11 // Class needed for TPC parallel tracking
14 //-------------------------------------------------------
18 #include "AliTPCtrack.h"
19 #include "AliComplexCluster.h"
25 class AliTPCclusterMI;
26 class AliTPCTrackerPoint;
30 class AliTPCseed : public AliTPCtrack {
31 friend class AliTPCtrackerMI;
34 virtual ~AliTPCseed();
35 AliTPCseed(const AliTPCtrack &t);
36 AliTPCseed(const AliTPCseed &s, Bool_t clusterOwner = kFALSE);
37 //AliTPCseed(const AliTPCseed &t, Double_t a);
38 AliTPCseed(Double_t xr, Double_t alpha, const Double_t xx[5],
39 const Double_t cc[15], Int_t i);
40 Int_t Compare(const TObject *o) const;
41 void Reset(Bool_t all = kTRUE);
42 Int_t GetProlongation(Double_t xr, Double_t &y, Double_t & z) const;
43 virtual Double_t GetPredictedChi2(const AliCluster *cluster2) const;
44 virtual Bool_t Update(const AliCluster* c2, Double_t chi2, Int_t i);
45 AliTPCTrackerPoint * GetTrackPoint(Int_t i);
46 AliTPCclusterMI * GetClusterFast(Int_t irow){ return fClusterPointer[irow];}
47 void RebuildSeed(); // rebuild seed to be ready for storing
48 Double_t GetDensityFirst(Int_t n);
49 Double_t GetSigma2C() const {
50 Double_t cnv=GetBz()*kB2C;
51 return GetSigma1Pt2()*cnv*cnv;
53 Double_t GetEta() const { return GetC()*GetX() - GetSnp();}
54 void GetClusterStatistic(Int_t first, Int_t last, Int_t &found, Int_t &foundable, Int_t &shared, Bool_t plus2);
56 void Modify(Double_t factor);
57 void SetClusterIndex2(Int_t row, Int_t index) {
60 Int_t GetClusterIndex2(Int_t row) const {
63 Int_t GetClusterSector(Int_t row) const {
65 if (fIndex[row]>=0) pica = ((fIndex[row]&0xff000000)>>24);
69 Double_t GetYat(Double_t x) const;
71 void SetErrorY2(Float_t sy2){fErrorY2=sy2;}
72 void SetErrorZ2(Float_t sz2){fErrorZ2=sz2;}
73 Float_t CookdEdx(Double_t low=0.05, Double_t up=0.70, Int_t i1=0, Int_t i2=159, Bool_t onlyused = kFALSE);
75 Double_t Bethe(Double_t bg); // return bethe-bloch
76 // void CookdEdx2(Double_t low=0.05, Double_t up=0.70);
77 Bool_t IsActive() const { return !(fRemoval);}
78 void Desactivate(Int_t reason){ fRemoval = reason;}
82 // AliTPCseed & operator = (const AliTPCseed &)
83 // {::Fatal("= operator","Not Implemented\n");return *this;}
84 AliESDtrack * fEsd; //!
85 AliTPCclusterMI* fClusterPointer[160]; // array of cluster pointers -
86 Bool_t fClusterOwner; // indicates the track is owner of cluster
87 TClonesArray * fPoints; //!array with points along the track
88 TClonesArray * fEPoints; //! array with exact points - calculated in special macro not used in tracking
90 Int_t fRow; //!current row number
91 Int_t fSector; //!current sector number
92 Int_t fRelativeSector; //! index of current relative sector
93 Float_t fCurrentSigmaY2; //!expected current cluster sigma Y
94 Float_t fCurrentSigmaZ2; //!expected current cluster sigma Z
95 Float_t fErrorY2; //!sigma of current cluster
96 Float_t fErrorZ2; //!sigma of current cluster
97 AliTPCclusterMI * fCurrentCluster; //!pointer to the current cluster for prolongation
98 Int_t fCurrentClusterIndex1; //! index of the current cluster
99 Bool_t fInDead; //! indicate if the track is in dead zone
100 Bool_t fIsSeeding; //!indicates if it is proces of seeading
101 Int_t fNoCluster; //!indicates number of rows without clusters
102 Int_t fSort; //!indicate criteria for sorting
103 Bool_t fBSigned; //indicates that clusters of this trackes are signed to be used
106 Float_t fDEDX[4]; // dedx according padrows
107 Float_t fSDEDX[4]; // sdedx according padrows
108 Int_t fNCDEDX[4]; // number of clusters for dedx measurment
109 Double_t fTPCr[AliPID::kSPECIES]; // rough PID according TPC
111 Int_t fSeedType; //seeding type
112 Int_t fSeed1; //first row for seeding
113 Int_t fSeed2; //last row for seeding
114 Int_t fOverlapLabels[12]; //track labels and the length of the overlap
115 Float_t fMAngular; // mean angular factor
116 Char_t fCircular; // indicates curlin track
117 AliTPCTrackerPoint fTrackPoints[160]; //track points - array track points
118 ClassDef(AliTPCseed,1)