3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 //-------------------------------------------------------------------------
10 // that is the base for AliTPCtracker, AliITStrackerV2 and AliTRDtracker
11 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
12 //-------------------------------------------------------------------------
14 #include <AliPlaneEff.h>
22 class AliExternalTrackParam;
25 class AliTracker : public TObject {
28 virtual ~AliTracker(){}
29 virtual Int_t Clusters2Tracks(AliESDEvent *event)=0;
30 virtual Int_t PropagateBack(AliESDEvent *event)=0;
31 virtual Int_t RefitInward(AliESDEvent *event)=0;
32 virtual Int_t PostProcess(AliESDEvent */*event*/) {return 0;}
33 void SetVertex(const Double_t *xyz, const Double_t *ers=0) {
34 fX=xyz[0]; fY=xyz[1]; fZ=xyz[2];
35 if (ers) { fSigmaX=ers[0]; fSigmaY=ers[1]; fSigmaZ=ers[2]; }
39 virtual Int_t LoadClusters(TTree *)=0;
40 virtual void UnloadClusters()=0;
41 virtual AliCluster *GetCluster(Int_t index) const=0;
42 virtual AliPlaneEff *GetPlaneEff() {return NULL;}
43 virtual Bool_t GetTrackPoint(Int_t /* index */ , AliTrackPoint& /* p */) const { return kFALSE;}
44 virtual Bool_t GetTrackPointTrackingError(Int_t /* index */,
45 AliTrackPoint& /* p */, const AliESDtrack* /* t */) { return kFALSE;}
46 virtual void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
47 virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
48 Double_t GetX() const {return fX;}
49 Double_t GetY() const {return fY;}
50 Double_t GetZ() const {return fZ;}
51 Double_t GetSigmaX() const {return fSigmaX;}
52 Double_t GetSigmaY() const {return fSigmaY;}
53 Double_t GetSigmaZ() const {return fSigmaZ;}
56 Double_t MeanMaterialBudget(Double_t *start,Double_t *end,Double_t *mparam);
58 Bool_t PropagateTrackTo(AliExternalTrackParam *track, Double_t x, Double_t m,
59 Double_t maxStep, Bool_t rotateTo=kTRUE, Double_t maxSnp=0.8);
61 static void SetFieldMap(const AliMagF* map, Bool_t uni);
62 static const AliMagF *GetFieldMap() {return fgkFieldMap;}
63 static Double_t GetBz(Float_t *r);
64 static Double_t GetBz(Double_t *r) {
65 Float_t rr[]={r[0],r[1],r[2]};
68 static Double_t GetBz() {return fgBz;}
69 static Bool_t UniformField() {return fgUniformField;}
71 static void FillResiduals(const AliExternalTrackParam *t,
72 Double_t *p, Double_t *cov,
73 UShort_t id, Bool_t updated=kTRUE);
74 static void SetFillResiduals(Bool_t flag=kTRUE) { fFillResiduals=flag; }
75 static void SetResidualsArray(TObjArray *arr) { fResiduals=arr; }
78 AliTracker(const AliTracker &atr);
80 AliTracker & operator=(const AliTracker & atr);
82 static Bool_t fgUniformField; // uniform field flag
83 static const AliMagF *fgkFieldMap; //! field map
84 static Double_t fgBz; // Nominal Bz (kG)
86 static Bool_t fFillResiduals; // Fill residuals flag
87 static TObjArray *fResiduals; //! Array of histograms with residuals
89 Double_t fX; //X-coordinate of the primary vertex
90 Double_t fY; //Y-coordinate of the primary vertex
91 Double_t fZ; //Z-coordinate of the primary vertex
93 Double_t fSigmaX; // error of the primary vertex position in X
94 Double_t fSigmaY; // error of the primary vertex position in Y
95 Double_t fSigmaZ; // error of the primary vertex position in Z
97 ClassDef(AliTracker,4) //abstract tracker