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1 | #ifndef ALITRDTRACKERV1_H | |
2 | #define ALITRDTRACKERV1_H | |
3 | ||
4 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
5 | * See cxx source for full Copyright notice */ | |
6 | ||
7 | /* $Id$ */ | |
8 | ||
9 | //////////////////////////////////////////////////////////////////////////// | |
10 | // // | |
11 | // The TRD tracker // | |
12 | // // | |
13 | // Authors: // | |
14 | // Marian Ivanov <M.Ivanov@gsi.de> // | |
15 | // Alex Bercuci <A.Bercuci@gsi.de> // | |
16 | // Jouri Belikov <J.Belikov@cern.ch> // | |
17 | // Markus Fasel <M.Fasel@gsi.de> // | |
18 | // // | |
19 | //////////////////////////////////////////////////////////////////////////// | |
20 | ||
21 | #ifndef ALITRACKER_H | |
22 | #include "AliTracker.h" | |
23 | #endif | |
24 | ||
25 | #ifndef ALITRDTRACKINGSECTOR_H | |
26 | #include "AliTRDtrackingSector.h" | |
27 | #endif | |
28 | ||
29 | /************************************************************************** | |
30 | * Class Status see source file * | |
31 | **************************************************************************/ | |
32 | ||
33 | class TFile; | |
34 | class TTreeSRedirector; | |
35 | class TClonesArray; | |
36 | class TLinearFitter; | |
37 | ||
38 | class AliRieman; | |
39 | class AliESDEvent; | |
40 | class AliCluster; | |
41 | class AliTrackPoint; | |
42 | ||
43 | class AliTRDcluster; | |
44 | class AliTRDseedV1; | |
45 | class AliTRDtrackingChamber; | |
46 | class AliTRDchamberTimeBin; | |
47 | class AliTRDtrackerFitter; | |
48 | class AliTRDtrackV1; | |
49 | class AliTRDReconstructor; | |
50 | class AliTRDtrackerV1 : public AliTracker | |
51 | { | |
52 | public: | |
53 | enum{ | |
54 | kOwner = BIT(14) | |
55 | }; | |
56 | enum{ | |
57 | kMaxLayersPerSector = 1000 | |
58 | , kMaxTimeBinIndex = 216 | |
59 | , kTrackingSectors = 18 | |
60 | , kNTimeBins = 35 | |
61 | , kNPlanes = 6 | |
62 | , kNSeedPlanes = 4 | |
63 | , kMaxTracksStack = 100 | |
64 | , kNConfigs = 15 | |
65 | }; | |
66 | AliTRDtrackerV1(AliTRDReconstructor *rec = 0x0); | |
67 | virtual ~AliTRDtrackerV1(); | |
68 | ||
69 | //temporary | |
70 | AliTRDtrackingSector* GetTrackingSector(Int_t sec) {return &fTrSec[sec];} | |
71 | ||
72 | Int_t Clusters2Tracks(AliESDEvent *esd); | |
73 | AliCluster* GetCluster(Int_t index) const; | |
74 | AliTRDseedV1* GetTracklet(Int_t index) const; | |
75 | AliKalmanTrack* GetTrack(Int_t index) const; | |
76 | TClonesArray* GetListOfClusters() const {return fClusters;} | |
77 | TClonesArray* GetListOfTracklets() const {return fTracklets;} | |
78 | TClonesArray* GetListOfTracks() const {return fTracks;} | |
79 | static Int_t GetNTimeBins() {return fgNTimeBins;} | |
80 | static void GetExtrapolationConfig(Int_t iconfig, Int_t planes[2]); | |
81 | static void GetSeedingConfig(Int_t iconfig, Int_t planes[4]); | |
82 | static TLinearFitter* GetTiltedRiemanFitter(); | |
83 | static TLinearFitter* GetTiltedRiemanFitterConstraint(); | |
84 | static AliRieman* GetRiemanFitter(); | |
85 | static void FitRieman(AliTRDcluster **clusters, Double_t chi2[2]); | |
86 | static Float_t FitRieman(AliTRDseedV1 *tracklets, Double_t *chi2, Int_t *planes = 0x0); | |
87 | static Float_t FitTiltedRiemanConstraint(AliTRDseedV1 *tracklets, Double_t zVertex); | |
88 | static Float_t FitTiltedRieman(AliTRDseedV1 *tracklets, Bool_t sigError); | |
89 | ||
90 | static Double_t FitRiemanTilt(const AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = 0x0, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = 0x0); | |
91 | static Double_t FitLine(const AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = 0x0, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = 0x0); | |
92 | static Double_t FitKalman(AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = 0x0, Bool_t up=0, Int_t np = 0, AliTrackPoint *points = 0x0); | |
93 | ||
94 | Bool_t IsClustersOwner() const {return TestBit(kOwner);} | |
95 | void SetClustersOwner(Bool_t own=kTRUE) {SetBit(kOwner, own); if(!own) fClusters = 0x0;} | |
96 | ||
97 | Int_t FollowBackProlongation(AliTRDtrackV1 &t); | |
98 | Int_t FollowProlongation(AliTRDtrackV1 &t); | |
99 | Int_t LoadClusters(TTree *cTree); | |
100 | Int_t LoadClusters(TClonesArray *clusters); | |
101 | Int_t PropagateBack(AliESDEvent *event); | |
102 | static Int_t PropagateToX(AliTRDtrackV1 &t, Double_t xToGo, Double_t maxStep); | |
103 | Int_t ReadClusters(TClonesArray* &array, TTree *in) const; | |
104 | Int_t RefitInward(AliESDEvent *event); | |
105 | static void SetNTimeBins(Int_t nTimeBins){fgNTimeBins = nTimeBins; } | |
106 | void SetReconstructor(const AliTRDReconstructor *rec){ fReconstructor = rec; } | |
107 | void UnloadClusters(); | |
108 | // void UseClusters(const AliKalmanTrack *t, Int_t from = 0) const; | |
109 | // static Int_t Freq(Int_t n, const Int_t *inlist, Int_t *outlist, Bool_t down); // to be removed | |
110 | ||
111 | class AliTRDLeastSquare{ | |
112 | public: | |
113 | AliTRDLeastSquare(); | |
114 | ~AliTRDLeastSquare(){}; | |
115 | ||
116 | void AddPoint(Double_t *x, Double_t y, Double_t sigmaY); | |
117 | void RemovePoint(Double_t *x, Double_t y, Double_t sigmaY); | |
118 | void Eval(); | |
119 | ||
120 | Double_t GetFunctionParameter(Int_t ParNumber) const {return fParams[ParNumber];} | |
121 | Double_t GetFunctionValue(Double_t *xpos) const; | |
122 | void GetCovarianceMatrix(Double_t *storage) const; | |
123 | private: | |
124 | AliTRDLeastSquare(const AliTRDLeastSquare &); | |
125 | AliTRDLeastSquare& operator=(const AliTRDLeastSquare &); | |
126 | Double_t fParams[2]; // Fitparameter | |
127 | Double_t fCovarianceMatrix[3]; // Covariance Matrix | |
128 | Double_t fSums[6]; // Sums | |
129 | }; | |
130 | ||
131 | protected: | |
132 | static Bool_t AdjustSector(AliTRDtrackV1 *track); | |
133 | Double_t BuildSeedingConfigs(AliTRDtrackingChamber **stack, Int_t *configs); | |
134 | Int_t BuildTrackingContainers(); | |
135 | static Float_t CalculateChi2Z(AliTRDseedV1 *tracklets, Double_t offset, Double_t slope, Double_t xref); | |
136 | Int_t Clusters2TracksSM(Int_t sector, AliESDEvent *esd); | |
137 | Int_t Clusters2TracksStack(AliTRDtrackingChamber **stack, TClonesArray *esdTrackList); | |
138 | AliTRDseedV1* GetTracklet(AliTRDtrackV1 *trk, Int_t plane, Int_t &idx); | |
139 | Bool_t GetTrackPoint(Int_t index, AliTrackPoint &p) const; | |
140 | Int_t MakeSeeds(AliTRDtrackingChamber **stack, AliTRDseedV1 *sseed, Int_t *ipar); | |
141 | AliTRDtrackV1* MakeTrack(AliTRDseedV1 *seeds, Double_t *params); | |
142 | AliTRDtrackV1* SetTrack(AliTRDtrackV1 *track); | |
143 | AliTRDseedV1* SetTracklet(AliTRDseedV1 *tracklet); | |
144 | ||
145 | private: | |
146 | AliTRDtrackerV1(const AliTRDtrackerV1 &tracker); | |
147 | AliTRDtrackerV1 &operator=(const AliTRDtrackerV1 &tracker); | |
148 | Double_t CookLikelihood(AliTRDseedV1 *cseed, Int_t planes[4]); | |
149 | Double_t CalculateTrackLikelihood(AliTRDseedV1 *tracklets, Double_t *chi2); | |
150 | Int_t ImproveSeedQuality(AliTRDtrackingChamber **stack, AliTRDseedV1 *tracklet); | |
151 | static Float_t CalculateReferenceX(AliTRDseedV1 *tracklets); | |
152 | void ResetSeedTB(); | |
153 | Float_t GetChi2Y(AliTRDseedV1 *tracklets) const; | |
154 | Float_t GetChi2Z(AliTRDseedV1 *tracklets) const; | |
155 | ||
156 | private: | |
157 | const AliTRDReconstructor *fReconstructor; // reconstructor manager | |
158 | AliTRDgeometry *fGeom; // Pointer to TRD geometry | |
159 | AliTRDtrackingSector fTrSec[kTrackingSectors]; // Array of tracking sectors; | |
160 | ||
161 | TClonesArray *fClusters; // List of clusters | |
162 | TClonesArray *fTracklets; // List of tracklets | |
163 | TClonesArray *fTracks; // List of tracks | |
164 | ||
165 | // should go to the recoParam | |
166 | static const Double_t fgkMaxChi2; // Max increment in track chi2 | |
167 | static const Float_t fgkMinClustersInTrack; // Min number of clusters in track | |
168 | static const Float_t fgkLabelFraction; // Min fraction of same label | |
169 | static const Double_t fgkMaxSnp; // Maximal snp for tracking | |
170 | static const Double_t fgkMaxStep; // Maximal step for tracking | |
171 | ||
172 | // stand alone tracking | |
173 | static Double_t fgTopologicQA[kNConfigs]; // Topologic quality | |
174 | Double_t fTrackQuality[kMaxTracksStack]; // Track quality | |
175 | Int_t fSeedLayer[kMaxTracksStack]; // Seed layer | |
176 | AliTRDchamberTimeBin *fSeedTB[kNSeedPlanes]; // seeding time bin planes | |
177 | Int_t fSieveSeeding; //! Seeding iterator | |
178 | ||
179 | static Int_t fgNTimeBins; // Timebins per plane in track prolongation | |
180 | static TLinearFitter *fgTiltedRieman; // Fitter for the tilted Rieman fit without vertex constriant | |
181 | static TLinearFitter *fgTiltedRiemanConstrained; // Fitter for the tilted Rieman fit with vertex constraint | |
182 | static AliRieman *fgRieman; // Fitter for the untilted Rieman fit | |
183 | ||
184 | ClassDef(AliTRDtrackerV1, 2) // TRD tracker development class | |
185 | ||
186 | }; | |
187 | #endif |