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be9c5115 | 1 | #ifndef ALITRACKER_H |
2 | #define ALITRACKER_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
fb17acd4 | 6 | /* $Id$ */ |
7 | ||
be9c5115 | 8 | //------------------------------------------------------------------------- |
9 | // class AliTracker | |
41377c29 | 10 | // that is the base for AliTPCtracker, AliITStrackerV2 and AliTRDtracker |
be9c5115 | 11 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch |
12 | //------------------------------------------------------------------------- | |
f7a1cc68 | 13 | |
14 | #include <TGeoGlobalMagField.h> | |
1d5fc4ea | 15 | #include <TObject.h> |
57acd2d2 | 16 | |
f7a1cc68 | 17 | #include "AliMagF.h" |
18 | #include "AliRecoParam.h" | |
19 | #include "AliPlaneEff.h" | |
be9c5115 | 20 | |
e23a38cb | 21 | class TTree; |
be9c5115 | 22 | class AliCluster; |
af885e0f | 23 | class AliESDEvent; |
48ce48d1 | 24 | class AliESDtrack; |
0c4ea33b | 25 | class AliExternalTrackParam; |
98937d93 | 26 | class AliTrackPoint; |
f7a1cc68 | 27 | class AliKalmanTrack; |
1f26f3e7 | 28 | class AliEventInfo; |
1d5fc4ea | 29 | class AliTracker : public TObject { |
be9c5115 | 30 | public: |
3b242889 | 31 | AliTracker(); |
be9c5115 | 32 | virtual ~AliTracker(){} |
af885e0f | 33 | virtual Int_t Clusters2Tracks(AliESDEvent *event)=0; |
34 | virtual Int_t PropagateBack(AliESDEvent *event)=0; | |
35 | virtual Int_t RefitInward(AliESDEvent *event)=0; | |
c4aa7a4c | 36 | virtual Int_t PostProcess(AliESDEvent */*event*/) {return 0;} |
1d5fc4ea | 37 | void SetVertex(const Double_t *xyz, const Double_t *ers=0) { |
38 | fX=xyz[0]; fY=xyz[1]; fZ=xyz[2]; | |
39 | if (ers) { fSigmaX=ers[0]; fSigmaY=ers[1]; fSigmaZ=ers[2]; } | |
40 | } | |
be9c5115 | 41 | |
42 | //protected: | |
c630aafd | 43 | virtual Int_t LoadClusters(TTree *)=0; |
e24ea474 | 44 | virtual void UnloadClusters()=0; |
2f4c86d7 | 45 | virtual void FillClusterArray(TObjArray* array) const; |
be9c5115 | 46 | virtual AliCluster *GetCluster(Int_t index) const=0; |
7167ae53 | 47 | virtual AliPlaneEff *GetPlaneEff() {return NULL;} |
1a191ea2 | 48 | virtual Bool_t GetTrackPoint(Int_t /* index */ , AliTrackPoint& /* p */) const { return kFALSE;} |
48ce48d1 | 49 | virtual Bool_t GetTrackPointTrackingError(Int_t /* index */, |
50 | AliTrackPoint& /* p */, const AliESDtrack* /* t */) { return kFALSE;} | |
be9c5115 | 51 | virtual void UseClusters(const AliKalmanTrack *t, Int_t from=0) const; |
52 | virtual void CookLabel(AliKalmanTrack *t,Float_t wrong) const; | |
7f6ddf58 | 53 | Double_t GetX() const {return fX;} |
54 | Double_t GetY() const {return fY;} | |
55 | Double_t GetZ() const {return fZ;} | |
1d5fc4ea | 56 | Double_t GetSigmaX() const {return fSigmaX;} |
57 | Double_t GetSigmaY() const {return fSigmaY;} | |
58 | Double_t GetSigmaZ() const {return fSigmaZ;} | |
7f6ddf58 | 59 | |
237adab4 | 60 | static Double_t GetTrackPredictedChi2(AliExternalTrackParam *track, |
61 | Double_t mass, Double_t step, | |
62 | const AliExternalTrackParam *backup); | |
6e440ee5 | 63 | static |
6b3a4c8e | 64 | Double_t MeanMaterialBudget(const Double_t *start, const Double_t *end, Double_t *mparam); |
0c4ea33b | 65 | static |
66 | Bool_t PropagateTrackTo(AliExternalTrackParam *track, Double_t x, Double_t m, | |
8144f71e | 67 | Double_t maxStep, Bool_t rotateTo=kTRUE, Double_t maxSnp=0.8, Double_t sign=1.); |
68 | static Bool_t PropagateTrackToBxByBz(AliExternalTrackParam *track, Double_t x, | |
f7920267 | 69 | Double_t m, |
8144f71e | 70 | Double_t maxStep, Bool_t rotateTo=kTRUE, Double_t maxSnp=0.8,Double_t sign=1.); |
f7a1cc68 | 71 | // |
72 | static Double_t GetBz(const Double_t *r); | |
f7920267 | 73 | static void GetBxByBz(const Double_t r[3], Double_t b[3]); |
f7a1cc68 | 74 | static Double_t GetBz(); |
75 | static Bool_t UniformField(); | |
76 | // | |
e23a38cb | 77 | static void FillResiduals(const AliExternalTrackParam *t, |
78 | Double_t *p, Double_t *cov, | |
79 | UShort_t id, Bool_t updated=kTRUE); | |
9efabefd | 80 | static void FillResiduals(const AliExternalTrackParam *t, |
81 | const AliCluster *c, Bool_t updated=kTRUE); | |
57acd2d2 | 82 | static void SetFillResiduals(AliRecoParam::EventSpecie_t es, Bool_t flag=kTRUE) { fFillResiduals=flag; fEventSpecie = es ;} |
83 | static void SetResidualsArray(TObjArray **arr) { fResiduals=arr; } | |
eca4fa66 | 84 | static TObjArray ** GetResidualsArray() { return fResiduals; } |
e23a38cb | 85 | |
1f26f3e7 | 86 | void SetEventInfo(AliEventInfo *evInfo) {fEventInfo = evInfo;} |
87 | const AliEventInfo* GetEventInfo() const {return fEventInfo;} | |
88 | ||
6c94f330 | 89 | protected: |
90 | AliTracker(const AliTracker &atr); | |
7f6ddf58 | 91 | private: |
90e48c0c | 92 | AliTracker & operator=(const AliTracker & atr); |
e23a38cb | 93 | static Bool_t fFillResiduals; // Fill residuals flag |
57acd2d2 | 94 | static TObjArray **fResiduals; //! Array of histograms with residuals |
e23a38cb | 95 | |
61ab8ea8 | 96 | Double_t fX; //X-coordinate of the primary vertex |
97 | Double_t fY; //Y-coordinate of the primary vertex | |
98 | Double_t fZ; //Z-coordinate of the primary vertex | |
6c94f330 | 99 | |
1d5fc4ea | 100 | Double_t fSigmaX; // error of the primary vertex position in X |
101 | Double_t fSigmaY; // error of the primary vertex position in Y | |
102 | Double_t fSigmaZ; // error of the primary vertex position in Z | |
57acd2d2 | 103 | |
104 | static AliRecoParam::EventSpecie_t fEventSpecie ; //! event specie, see AliRecoParam | |
1f26f3e7 | 105 | AliEventInfo* fEventInfo; //! pointer to the event info object |
57acd2d2 | 106 | |
1f26f3e7 | 107 | ClassDef(AliTracker,5) //abstract tracker |
be9c5115 | 108 | }; |
109 | ||
f7a1cc68 | 110 | //__________________________________________________________________________ |
111 | inline Bool_t AliTracker::UniformField() | |
112 | { | |
113 | AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField(); | |
114 | return fld ? fld->IsUniform():kTRUE; | |
115 | } | |
be9c5115 | 116 | |
f7a1cc68 | 117 | #endif |