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Update in the interface for HLT and for visualization
[u/mrichter/AliRoot.git] / TRD / AliTRDtrackerV1.h
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e4f2f73d 1#ifndef ALITRDTRACKERV1_H
2#define ALITRDTRACKERV1_H
eb38ed55 3
e4f2f73d 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: //
eb38ed55 14// Marian Ivanov <M.Ivanov@gsi.de> //
e4f2f73d 15// Alex Bercuci <A.Bercuci@gsi.de> //
eb38ed55 16// Jouri Belikov <J.Belikov@cern.ch> //
e4f2f73d 17// Markus Fasel <M.Fasel@gsi.de> //
18// //
eb38ed55 19////////////////////////////////////////////////////////////////////////////
e4f2f73d 20
eb38ed55 21#ifndef ALITRACKER_H
22#include "AliTracker.h"
e4f2f73d 23#endif
24
eb38ed55 25#ifndef ALITRDTRACKINGSECTOR_H
26#include "AliTRDtrackingSector.h"
27#endif
e4f2f73d 28
29/**************************************************************************
30 * Class Status see source file *
31 **************************************************************************/
32
33class TFile;
34class TTreeSRedirector;
35class TClonesArray;
eb38ed55 36class TLinearFitter;
e4f2f73d 37
38class AliRieman;
39class AliESDEvent;
eb38ed55 40class AliCluster;
e4f2f73d 41
eb38ed55 42class AliTRDcluster;
e4f2f73d 43class AliTRDseedV1;
eb38ed55 44class AliTRDtrackingChamber;
45class AliTRDchamberTimeBin;
e4f2f73d 46class AliTRDtrackerFitter;
0906e73e 47class AliTRDtrackV1;
48class AliTrackPoint;
eb38ed55 49class AliTRDtrackerV1 : public AliTracker
e4f2f73d 50{
eb38ed55 51public:
3b57a3f7 52 enum{
53 kMaxLayersPerSector = 1000
54 , kMaxTimeBinIndex = 216
55 , kTrackingSectors = 18
56 , kNTimeBins = 35
57 , kNPlanes = 6
58 , kNSeedPlanes = 4
59 , kMaxTracksStack = 100
60 , kNConfigs = 15
61 };
62 AliTRDtrackerV1();
63 virtual ~AliTRDtrackerV1();
e4f2f73d 64
eb38ed55 65 //temporary
66 AliTRDtrackingSector* GetTrackingSector(Int_t sec) {return &fTrSec[sec];}
67
3b57a3f7 68 Int_t Clusters2Tracks(AliESDEvent *esd);
eb38ed55 69 static TTreeSRedirector* DebugStreamer() {return fgDebugStreamer;}
3b57a3f7 70 AliCluster* GetCluster(Int_t index) const;
71 AliTRDseedV1* GetTracklet(Int_t index) const;
72 AliKalmanTrack* GetTrack(Int_t index) const;
73 TClonesArray* GetListOfClusters() {return fClusters;}
74 TClonesArray* GetListOfTracklets() {return fTracklets;}
75 TClonesArray* GetListOfTracks() {return fTracks;}
76 static const Int_t GetNTimeBins() {return fgNTimeBins;}
77 static void GetExtrapolationConfig(Int_t iconfig, Int_t planes[2]);
78 static void GetSeedingConfig(Int_t iconfig, Int_t planes[4]);
79 static TLinearFitter* GetTiltedRiemanFitter();
80 static TLinearFitter* GetTiltedRiemanFitterConstraint();
81 static AliRieman* GetRiemanFitter();
82 static void FitRieman(AliTRDcluster **clusters, Double_t chi2[2]);
83 static Float_t FitRieman(AliTRDseedV1 *tracklets, Double_t *chi2, Int_t *planes = 0x0);
84 static Float_t FitTiltedRiemanConstraint(AliTRDseedV1 *tracklets, Double_t zVertex);
85 static Float_t FitTiltedRieman(AliTRDseedV1 *tracklets, Bool_t sigError);
eb38ed55 86
3b57a3f7 87 static Double_t FitRiemanTilt(AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = 0x0, Bool_t err=0, Int_t np = 0, AliTrackPoint *points = 0x0);
88 //static Double_t FitKalman(AliTRDtrackV1 *trk, AliTRDseedV1 *tracklets = 0x0, Bool_t up=0, Int_t np = 0, AliTrackPoint *points = 0x0);
8acca6a3 89
3b57a3f7 90 Int_t FollowBackProlongation(AliTRDtrackV1 &t);
91 Int_t FollowProlongation(AliTRDtrackV1 &t);
92 Int_t LoadClusters(TTree *cTree);
93 Int_t PropagateBack(AliESDEvent *event);
94 Int_t ReadClusters(TClonesArray* &array, TTree *in) const;
95 Int_t RefitInward(AliESDEvent *event);
96 static void SetNTimeBins(Int_t nTimeBins){fgNTimeBins = nTimeBins; }
97 void UnloadClusters();
98
99 static Int_t Freq(Int_t n, const Int_t *inlist, Int_t *outlist, Bool_t down); // to be removed
100
101 class AliTRDLeastSquare{
102 public:
103 AliTRDLeastSquare();
104 ~AliTRDLeastSquare(){};
105
106 void AddPoint(Double_t *x, Double_t y, Double_t sigmaY);
107 void RemovePoint(Double_t *x, Double_t y, Double_t sigmaY);
108 void Eval();
109
110 Double_t GetFunctionParameter(Int_t ParNumber) const {return fParams[ParNumber];}
111 Double_t GetFunctionValue(Double_t *xpos) const;
112 void GetCovarianceMatrix(Double_t *storage) const;
113 private:
114 AliTRDLeastSquare(const AliTRDLeastSquare &);
115 AliTRDLeastSquare& operator=(const AliTRDLeastSquare &);
116 Double_t fParams[2]; // Fitparameter
117 Double_t fCovarianceMatrix[3]; // Covariance Matrix
118 Double_t fSums[6]; // Sums
119 };
fbb2ea06 120
eb38ed55 121protected:
3b57a3f7 122 static Bool_t AdjustSector(AliTRDtrackV1 *track);
123 Double_t BuildSeedingConfigs(AliTRDtrackingChamber **stack, Int_t *configs);
124 static Float_t CalculateChi2Z(AliTRDseedV1 *tracklets, Double_t offset, Double_t slope, Double_t xref);
125 Int_t Clusters2TracksSM(Int_t sector, AliESDEvent *esd);
126 Int_t Clusters2TracksStack(AliTRDtrackingChamber **stack, TClonesArray *esdTrackList);
127 AliTRDseedV1* GetTracklet(AliTRDtrackV1 *trk, Int_t plane, Int_t &idx);
128 Bool_t GetTrackPoint(Int_t index, AliTrackPoint &p) const;
129 Int_t MakeSeeds(AliTRDtrackingChamber **stack, AliTRDseedV1 *sseed, Int_t *ipar);
130 AliTRDtrackV1* MakeTrack(AliTRDseedV1 *seeds, Double_t *params);
131 static Int_t PropagateToX(AliTRDtrackV1 &t, Double_t xToGo, Double_t maxStep);
132 AliTRDseedV1* SetTracklet(AliTRDseedV1 *tracklet);
e4f2f73d 133
0906e73e 134private:
e4f2f73d 135 AliTRDtrackerV1(const AliTRDtrackerV1 &tracker);
136 AliTRDtrackerV1 &operator=(const AliTRDtrackerV1 &tracker);
bb56afff 137 Double_t CookLikelihood(AliTRDseedV1 *cseed, Int_t planes[4], Double_t *chi2);
138 Double_t CalculateTrackLikelihood(AliTRDseedV1 *tracklets, Double_t *chi2);
139 Int_t ImproveSeedQuality(AliTRDtrackingChamber **stack, AliTRDseedV1 *tracklet);
bb56afff 140 static Float_t CalculateReferenceX(AliTRDseedV1 *tracklets);
141
142 Float_t GetChi2Y(AliTRDseedV1 *tracklets) const;
143 Float_t GetChi2Z(AliTRDseedV1 *tracklets) const;
e4f2f73d 144
0906e73e 145private:
eb38ed55 146 AliTRDgeometry *fGeom; // Pointer to TRD geometry
147 AliTRDtrackingSector fTrSec[kTrackingSectors]; // Array of tracking sectors;
e4f2f73d 148
bb56afff 149 TClonesArray *fClusters; // List of clusters
150 TClonesArray *fTracklets; // List of tracklets
151 TClonesArray *fTracks; // List of tracks
eb38ed55 152
153 // should go to the recoParam
154 static const Double_t fgkMaxChi2; // Max increment in track chi2
155 static const Float_t fgkMinClustersInTrack; // Min number of clusters in track
156 static const Float_t fgkLabelFraction; // Min fraction of same label
157 static const Double_t fgkMaxSnp; // Maximal snp for tracking
158 static const Double_t fgkMaxStep; // Maximal step for tracking
159
160 // stand alone tracking
2985ffcb 161 static Double_t fgTopologicQA[kNConfigs]; // Topologic quality
e4f2f73d 162 Double_t fTrackQuality[kMaxTracksStack]; // Track quality
163 Int_t fSeedLayer[kMaxTracksStack]; // Seed layer
164 Int_t fSieveSeeding; //! Seeding iterator
eb38ed55 165
2985ffcb 166 static Int_t fgNTimeBins; // Timebins per plane in track prolongation
167 static TLinearFitter *fgTiltedRieman; // Fitter for the tilted Rieman fit without vertex constriant
168 static TLinearFitter *fgTiltedRiemanConstrained; // Fitter for the tilted Rieman fit with vertex constraint
169 static AliRieman *fgRieman; // Fitter for the untilted Rieman fit
bb56afff 170
171 static TTreeSRedirector *fgDebugStreamer; //!Debug streamer
172
eb38ed55 173 ClassDef(AliTRDtrackerV1, 2) // TRD tracker development class
e4f2f73d 174
175};
176#endif