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1 | #ifndef ALIMUONTRACK_H | |
2 | #define ALIMUONTRACK_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /*$Id$*/ | |
7 | // Revision of includes 07/05/2004 | |
8 | ||
9 | /// \ingroup rec | |
10 | /// \class AliMUONTrack | |
11 | /// \brief Reconstructed track in ALICE dimuon spectrometer | |
12 | /// | |
13 | //////////////////////////////////////////////////// | |
14 | /// Reconstructed track in ALICE dimuon spectrometer | |
15 | //////////////////////////////////////////////////// | |
16 | ||
17 | #include <TObjArray.h> | |
18 | #include <TMatrixD.h> | |
19 | ||
20 | class AliMUONVCluster; | |
21 | class AliMUONObjectPair; | |
22 | class AliMUONTrackParam; | |
23 | ||
24 | class AliMUONTrack : public TObject | |
25 | { | |
26 | public: | |
27 | AliMUONTrack(); // Default constructor | |
28 | AliMUONTrack(AliMUONObjectPair *segment, Double_t bendingVertexDispersion); // Constructor from a segment | |
29 | virtual ~AliMUONTrack(); // Destructor | |
30 | AliMUONTrack (const AliMUONTrack& track); // copy constructor | |
31 | AliMUONTrack& operator=(const AliMUONTrack& track); // assignment operator | |
32 | ||
33 | void Reset(); | |
34 | ||
35 | TObjArray* GetTrackParamAtCluster() const; | |
36 | void AddTrackParamAtCluster(const AliMUONTrackParam &trackParam, AliMUONVCluster &cluster, Bool_t copy = kFALSE); | |
37 | void RemoveTrackParamAtCluster(AliMUONTrackParam *trackParam); | |
38 | Bool_t UpdateTrackParamAtCluster(); | |
39 | Bool_t UpdateCovTrackParamAtCluster(); | |
40 | ||
41 | Bool_t IsValid(UInt_t requestedStationMask, Bool_t request2ChInSameSt45 = kFALSE); | |
42 | ||
43 | void TagRemovableClusters(UInt_t requestedStationMask); | |
44 | ||
45 | /// return the number of clusters attached to the track | |
46 | Int_t GetNClusters() const {return fTrackParamAtCluster ? fTrackParamAtCluster->GetEntriesFast() : 0;} | |
47 | ||
48 | /// return kTrue if the vertex must be used to constrain the fit, kFalse if not | |
49 | Bool_t FitWithVertex() const {return fFitWithVertex;} | |
50 | /// set the flag telling whether the vertex must be used to constrain the fit or not | |
51 | void FitWithVertex(Bool_t fitWithVertex) { fFitWithVertex = fitWithVertex; } | |
52 | /// return the vertex resolution square used during the tracking procedure | |
53 | void GetVertexErrXY2(Double_t &nonBendingErr2, Double_t &bendingErr2) const | |
54 | { nonBendingErr2 = fVertexErrXY2[0]; bendingErr2 = fVertexErrXY2[1]; } | |
55 | /// set the vertex resolution square used during the tracking procedure | |
56 | void SetVertexErrXY2(Double_t nonBendingErr2, Double_t bendingErr2) | |
57 | { fVertexErrXY2[0] = nonBendingErr2; fVertexErrXY2[1] = bendingErr2; } | |
58 | ||
59 | /// return kTrue if the multiple scattering must be accounted for in the fit, kFalse if not | |
60 | Bool_t FitWithMCS() const {return fFitWithMCS;} | |
61 | /// set the flag telling whether the multiple scattering must be accounted for in the fit or not | |
62 | void FitWithMCS(Bool_t fitWithMCS) {fFitWithMCS = fitWithMCS;} | |
63 | ||
64 | Bool_t ComputeClusterWeights(TMatrixD* mcsCovariances = 0); | |
65 | Bool_t ComputeLocalChi2(Bool_t accountForMCS); | |
66 | Double_t ComputeGlobalChi2(Bool_t accountForMCS); | |
67 | ||
68 | /// return the minimum value of the function minimized by the fit | |
69 | Double_t GetGlobalChi2() const {return fGlobalChi2;} | |
70 | /// set the minimum value of the function minimized by the fit | |
71 | void SetGlobalChi2(Double_t chi2) { fGlobalChi2 = chi2;} | |
72 | ||
73 | /// return kTRUE if the track has been improved | |
74 | Bool_t IsImproved() const {return fImproved;} | |
75 | /// set the flag telling whether the track has been improved or not | |
76 | void SetImproved(Bool_t improved) { fImproved = improved;} | |
77 | ||
78 | /// return 1,2,3 if track matches with trigger track, 0 if not | |
79 | Int_t GetMatchTrigger(void) const {return fMatchTrigger;} | |
80 | /// returns the local trigger number corresponding to the trigger track (obsolete) | |
81 | Int_t GetLoTrgNum(void) const {return LoCircuit();} | |
82 | /// set the flag telling whether track matches with trigger track or not | |
83 | void SetMatchTrigger(Int_t matchTrigger) {fMatchTrigger = matchTrigger;} | |
84 | /// return the chi2 of trigger/track matching | |
85 | Double_t GetChi2MatchTrigger(void) const {return fChi2MatchTrigger;} | |
86 | /// set the chi2 of trigger/track matching | |
87 | void SetChi2MatchTrigger(Double_t chi2MatchTrigger) {fChi2MatchTrigger = chi2MatchTrigger;} | |
88 | ||
89 | Int_t ClustersInCommon(AliMUONTrack* track, Int_t stMin = 0, Int_t stMax = 4) const; | |
90 | ||
91 | Int_t GetNDF() const; | |
92 | Double_t GetNormalizedChi2() const; | |
93 | ||
94 | Int_t FindCompatibleClusters(const AliMUONTrack &track, Double_t sigma2Cut, Bool_t compatibleCluster[10]) const; | |
95 | Bool_t Match(AliMUONTrack &track, Double_t sigma2Cut, Int_t &nMatchClusters) const; | |
96 | ||
97 | /// return pointer to track parameters at vertex (can be 0x0) | |
98 | AliMUONTrackParam* GetTrackParamAtVertex() const {return fTrackParamAtVertex;} | |
99 | void SetTrackParamAtVertex(const AliMUONTrackParam* trackParam); | |
100 | ||
101 | /// set word telling which trigger chambers where hit by track | |
102 | UShort_t GetHitsPatternInTrigCh() const {return fHitsPatternInTrigCh;} | |
103 | /// set word telling which trigger chambers where hit by track | |
104 | void SetHitsPatternInTrigCh(UShort_t hitsPatternInTrigCh) {fHitsPatternInTrigCh = hitsPatternInTrigCh;} | |
105 | /// set word telling which trigger chambers where hit by track (from tracker track extrapolation) | |
106 | UInt_t GetHitsPatternInTrigChTrk() const {return fHitsPatternInTrigChTrk;} | |
107 | /// set word telling which trigger chambers where hit by track (from tracker track extrapolation) | |
108 | void SetHitsPatternInTrigChTrk(UInt_t hitsPatternInTrigChTrk) {fHitsPatternInTrigChTrk = hitsPatternInTrigChTrk;} | |
109 | ||
110 | /// set local trigger information for the matched trigger track | |
111 | void SetLocalTrigger(Int_t loCirc, Int_t loStripX, Int_t loStripY, Int_t loDev, Int_t loLpt, Int_t loHpt, UChar_t respWithoutChamber=0); | |
112 | /// return local trigger information for the matched trigger track | |
113 | Int_t GetLocalTrigger(void) const { return fLocalTrigger; } | |
114 | /// number of triggering circuit | |
115 | Int_t LoCircuit(void) const { return fLocalTrigger & 0xFF; } | |
116 | /// x-strip local trigger | |
117 | Int_t LoStripX(void) const { return fLocalTrigger >> 8 & 0x1F; } | |
118 | /// y-strip local trigger | |
119 | Int_t LoStripY(void) const { return fLocalTrigger >> 13 & 0x0F; } | |
120 | /// deviation local trigger | |
121 | Int_t LoDev(void) const { return fLocalTrigger >> 17 & 0x1F; } | |
122 | /// low pt decision local trigger | |
123 | Int_t LoLpt(void) const { return fLocalTrigger >> 22 & 0x03; } | |
124 | /// high pt decision local trigger | |
125 | Int_t LoHpt(void) const { return fLocalTrigger >> 24 & 0x03; } | |
126 | /// Word stating if trigger would be fired without one chamber | |
127 | Int_t GetTriggerWithoutChamber(void) const { return fLocalTrigger >> 26 & 0xF; } | |
128 | /// Check if trigger would be fired without chamber (ich [0,3]) | |
129 | Bool_t TriggerFiredWithoutChamber(Int_t ich) const { return GetTriggerWithoutChamber() >> (3 - ich) & 0x1; } | |
130 | ||
131 | void FindMCLabel(); | |
132 | /// set the corresponding MC track number | |
133 | void SetMCLabel(Int_t label) {fTrackID = label;} | |
134 | /// return the corresponding MC track number | |
135 | Int_t GetMCLabel() const {return fTrackID;} | |
136 | ||
137 | void RecursiveDump(void) const; // Recursive dump (with associated clusters) | |
138 | ||
139 | virtual void Print(Option_t* opt="") const; | |
140 | ||
141 | virtual void Clear(Option_t* opt=""); | |
142 | ||
143 | /// return the maximum chi2 above which the track can be considered as abnormal (due to extrapolation failure, ...) | |
144 | static Double_t MaxChi2() {return fgkMaxChi2;} | |
145 | ||
146 | /// set the flag which is kTRUE if that track shares cluster(s) with another | |
147 | void Connected(Bool_t flag = kTRUE) {fConnected = flag;} | |
148 | /// return the flag which is kTRUE if that track shares cluster(s) with another | |
149 | Bool_t IsConnected() const {return fConnected;} | |
150 | ||
151 | ||
152 | private: | |
153 | ||
154 | static const Double_t fgkMaxChi2; ///< maximum chi2 above which the track can be considered as abnormal | |
155 | ||
156 | mutable TObjArray* fTrackParamAtCluster; ///< Track parameters at cluster | |
157 | ||
158 | Bool_t fFitWithVertex; //!< kTRUE if using the vertex to constrain the fit, kFALSE if not | |
159 | Double_t fVertexErrXY2[2]; //!< Vertex resolution square used during the tracking procedure if required | |
160 | ||
161 | Bool_t fFitWithMCS; //!< kTRUE if accounting for multiple scattering in the fit, kFALSE if not | |
162 | ||
163 | TMatrixD* fClusterWeightsNonBending; //!< weights matrix, in non bending direction, of clusters attached to the track | |
164 | //!< (accounting for multiple scattering and cluster resolution) | |
165 | TMatrixD* fClusterWeightsBending; //!< weights matrix, in bending direction, of clusters attached to the track | |
166 | //!< (accounting for multiple scattering and cluster resolution) | |
167 | ||
168 | Double_t fGlobalChi2; ///< Global chi2 of the track | |
169 | ||
170 | Bool_t fImproved; //!< kTRUE if the track has been improved | |
171 | ||
172 | Int_t fMatchTrigger; ///< 0 track does not match trigger | |
173 | ///< 1 track match but does not pass pt cut | |
174 | ///< 2 track match Low pt cut | |
175 | ///< 3 track match High pt cut | |
176 | Double_t fChi2MatchTrigger; ///< chi2 of trigger/track matching | |
177 | ||
178 | Int_t fTrackID; ///< Point to the corresponding MC track | |
179 | ||
180 | AliMUONTrackParam* fTrackParamAtVertex; //!< Track parameters at vertex | |
181 | ||
182 | UShort_t fHitsPatternInTrigCh; ///< Word containing info on the hits left in trigger chambers | |
183 | UInt_t fHitsPatternInTrigChTrk; ///< Word containing info on the hits left in trigger chambers (calculated from extrapolated tracker track) | |
184 | ||
185 | Int_t fLocalTrigger; ///< packed local trigger information | |
186 | ||
187 | Bool_t fConnected; ///< kTRUE if that track shares cluster(s) with another | |
188 | ||
189 | // methods | |
190 | Bool_t ComputeClusterWeights(TMatrixD& clusterWeightsNB, TMatrixD& clusterWeightsB, | |
191 | TMatrixD* mcsCovariances = 0, const AliMUONVCluster* discardedCluster = 0) const; | |
192 | void ComputeMCSCovariances(TMatrixD& mcsCovariances) const; | |
193 | ||
194 | ||
195 | ClassDef(AliMUONTrack, 11) // Reconstructed track in ALICE dimuon spectrometer | |
196 | }; | |
197 | ||
198 | #endif |