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 <TGeoGlobalMagField.h>
18 #include "AliRecoParam.h"
19 #include "AliPlaneEff.h"
25 class AliExternalTrackParam;
28 class AliTracker : public TObject {
31 virtual ~AliTracker(){}
32 virtual Int_t Clusters2Tracks(AliESDEvent *event)=0;
33 virtual Int_t PropagateBack(AliESDEvent *event)=0;
34 virtual Int_t RefitInward(AliESDEvent *event)=0;
35 virtual Int_t PostProcess(AliESDEvent */*event*/) {return 0;}
36 void SetVertex(const Double_t *xyz, const Double_t *ers=0) {
37 fX=xyz[0]; fY=xyz[1]; fZ=xyz[2];
38 if (ers) { fSigmaX=ers[0]; fSigmaY=ers[1]; fSigmaZ=ers[2]; }
42 virtual Int_t LoadClusters(TTree *)=0;
43 virtual void UnloadClusters()=0;
44 virtual void FillClusterArray(TObjArray* array) const;
45 virtual AliCluster *GetCluster(Int_t index) const=0;
46 virtual AliPlaneEff *GetPlaneEff() {return NULL;}
47 virtual Bool_t GetTrackPoint(Int_t /* index */ , AliTrackPoint& /* p */) const { return kFALSE;}
48 virtual Bool_t GetTrackPointTrackingError(Int_t /* index */,
49 AliTrackPoint& /* p */, const AliESDtrack* /* t */) { return kFALSE;}
50 virtual void UseClusters(const AliKalmanTrack *t, Int_t from=0) const;
51 virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const;
52 Double_t GetX() const {return fX;}
53 Double_t GetY() const {return fY;}
54 Double_t GetZ() const {return fZ;}
55 Double_t GetSigmaX() const {return fSigmaX;}
56 Double_t GetSigmaY() const {return fSigmaY;}
57 Double_t GetSigmaZ() const {return fSigmaZ;}
60 Double_t MeanMaterialBudget(const Double_t *start, const Double_t *end, Double_t *mparam);
62 Bool_t PropagateTrackTo(AliExternalTrackParam *track, Double_t x, Double_t m,
63 Double_t maxStep, Bool_t rotateTo=kTRUE, Double_t maxSnp=0.8);
65 static Double_t GetBz(const Double_t *r);
66 static Double_t GetBz();
67 static Bool_t UniformField();
69 static void FillResiduals(const AliExternalTrackParam *t,
70 Double_t *p, Double_t *cov,
71 UShort_t id, Bool_t updated=kTRUE);
72 static void FillResiduals(const AliExternalTrackParam *t,
73 const AliCluster *c, Bool_t updated=kTRUE);
74 static void SetFillResiduals(AliRecoParam::EventSpecie_t es, Bool_t flag=kTRUE) { fFillResiduals=flag; fEventSpecie = es ;}
75 static void SetResidualsArray(TObjArray **arr) { fResiduals=arr; }
78 AliTracker(const AliTracker &atr);
80 AliTracker & operator=(const AliTracker & atr);
81 static Bool_t fFillResiduals; // Fill residuals flag
82 static TObjArray **fResiduals; //! Array of histograms with residuals
84 Double_t fX; //X-coordinate of the primary vertex
85 Double_t fY; //Y-coordinate of the primary vertex
86 Double_t fZ; //Z-coordinate of the primary vertex
88 Double_t fSigmaX; // error of the primary vertex position in X
89 Double_t fSigmaY; // error of the primary vertex position in Y
90 Double_t fSigmaZ; // error of the primary vertex position in Z
92 static AliRecoParam::EventSpecie_t fEventSpecie ; //! event specie, see AliRecoParam
94 ClassDef(AliTracker,4) //abstract tracker
97 //__________________________________________________________________________
98 inline Bool_t AliTracker::UniformField()
100 AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
101 return fld ? fld->IsUniform():kTRUE;