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1 | #ifndef ALITRDSEEDV1_H | |
2 | #define ALITRDSEEDV1_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 | ||
8 | //////////////////////////////////////////////////////////////////////////// | |
9 | // // | |
10 | // The TRD track seed // | |
11 | // // | |
12 | //////////////////////////////////////////////////////////////////////////// | |
13 | ||
14 | #ifndef ALITRDSEED_H | |
15 | #include "AliTRDseed.h" | |
16 | #endif | |
17 | ||
18 | #ifndef ALITRDGEOMETRY_H | |
19 | #include "AliTRDgeometry.h" | |
20 | #endif | |
21 | ||
22 | #ifndef ALIPID_H | |
23 | #include "AliPID.h" | |
24 | #endif | |
25 | ||
26 | #ifndef ALIRIEMAN_H | |
27 | #include "AliRieman.h" | |
28 | #endif | |
29 | ||
30 | class TTreeSRedirector; | |
31 | ||
32 | class AliRieman; | |
33 | ||
34 | class AliTRDtrackingChamber; | |
35 | class AliTRDcluster; | |
36 | class AliTRDtrackV1; | |
37 | class AliTRDReconstructor; | |
38 | class AliTRDseedV1 : public AliTRDseed | |
39 | { | |
40 | ||
41 | public: | |
42 | ||
43 | enum { | |
44 | knSlices = 10 | |
45 | }; | |
46 | // bits from 0-13 are reserved by ROOT (see TObject.h) | |
47 | enum AliTRDtrackletStatus { | |
48 | kOwner = BIT(14) | |
49 | , kRowCross = BIT(15) | |
50 | }; | |
51 | ||
52 | AliTRDseedV1(Int_t det = -1); | |
53 | ~AliTRDseedV1(); | |
54 | AliTRDseedV1(const AliTRDseedV1 &ref); | |
55 | AliTRDseedV1& operator=(const AliTRDseedV1 &ref); | |
56 | ||
57 | Bool_t AttachClustersIter(AliTRDtrackingChamber *chamber, Float_t quality, Bool_t kZcorr = kFALSE | |
58 | , AliTRDcluster *c=0x0); | |
59 | Bool_t AttachClusters(AliTRDtrackingChamber *chamber, Bool_t kZcorr = kFALSE); | |
60 | void CookdEdx(Int_t nslices); | |
61 | void Draw(Option_t* o = ""); | |
62 | Bool_t Fit(Bool_t tilt=kTRUE); | |
63 | ||
64 | Bool_t Init(AliTRDtrackV1 *track); | |
65 | inline void Init(const AliRieman *fit); | |
66 | Bool_t IsOwner() const { return TestBit(kOwner);} | |
67 | Bool_t IsRowCross() const { return TestBit(kRowCross);} | |
68 | ||
69 | inline Float_t GetChi2Z(const Float_t z = 999.) const; | |
70 | inline Float_t GetChi2Y(const Float_t y = 999.) const; | |
71 | void GetCovAt(Double_t x, Double_t *cov) const; | |
72 | Double_t* GetCrossXYZ() { return &fCross[0];} | |
73 | Double_t GetCrossSz2() const { return fCross[3];} | |
74 | Float_t* GetdEdx() {return &fdEdx[0];} | |
75 | Float_t GetdQdl(Int_t ic) const; | |
76 | Int_t GetDetector() const {return fDet;} | |
77 | Double_t GetMomentum() const {return fMom;} | |
78 | Int_t GetN() const {return fN2;} | |
79 | Float_t GetQuality(Bool_t kZcorr) const; | |
80 | Int_t GetPlane() const { return AliTRDgeometry::GetLayer(fDet); } | |
81 | ||
82 | Double_t* GetProbability(); | |
83 | Double_t GetSnp() const { return fSnp;} | |
84 | Double_t GetTgl() const { return fTgl;} | |
85 | Double_t GetYat(Double_t x) const { return fYfit[0] + fYfit[1] * (x-fX0);} | |
86 | Double_t GetZat(Double_t x) const { return fZfit[0] + fZfit[1] * (x-fX0);} | |
87 | ||
88 | inline AliTRDcluster* NextCluster(); | |
89 | void Print(Option_t *o = "") const; | |
90 | void ResetClusterIter() {fClusterIter = &fClusters[0]; fClusterIter--; fClusterIdx=-1;} | |
91 | ||
92 | void SetMomentum(Double_t mom) {fMom = mom;} | |
93 | void SetOwner(); | |
94 | void SetDetector(Int_t d) {fDet = d; } | |
95 | void SetSnp(Double_t snp) {fSnp = snp;} | |
96 | void SetTgl(Double_t tgl) {fTgl = tgl;} | |
97 | void SetReconstructor(const AliTRDReconstructor *rec) {fReconstructor = rec;} | |
98 | protected: | |
99 | ||
100 | void Copy(TObject &ref) const; | |
101 | ||
102 | private: | |
103 | const AliTRDReconstructor *fReconstructor;//! local reconstructor | |
104 | AliTRDcluster **fClusterIter; //! clusters iterator | |
105 | UChar_t fClusterIdx; //! clusters iterator | |
106 | Int_t fDet; // TRD detector | |
107 | Float_t fMom; // Momentum estimate for tracklet [GeV/c] | |
108 | Float_t fSnp; // sin of track with respect to x direction in XY plane | |
109 | Float_t fTgl; // tg of track with respect to x direction in XZ plane | |
110 | Float_t fdX; // length of time bin | |
111 | Float_t fdEdx[knSlices]; // dE/dx measurements for tracklet | |
112 | Double_t fCross[4]; // spatial parameters of the pad row crossing | |
113 | Double_t fProb[AliPID::kSPECIES]; // PID probabilities | |
114 | ||
115 | ClassDef(AliTRDseedV1, 2) // New TRD seed | |
116 | ||
117 | }; | |
118 | ||
119 | //____________________________________________________________ | |
120 | inline Float_t AliTRDseedV1::GetChi2Z(const Float_t z) const | |
121 | { | |
122 | Float_t z1 = (z == 999.) ? fMeanz : z; | |
123 | Float_t chi = fZref[0] - z1; | |
124 | return chi*chi; | |
125 | } | |
126 | ||
127 | //____________________________________________________________ | |
128 | inline Float_t AliTRDseedV1::GetChi2Y(const Float_t y) const | |
129 | { | |
130 | Float_t y1 = (y == 999.) ? fYfitR[0] : y; | |
131 | Float_t chi = fYref[0] - y1; | |
132 | return chi*chi; | |
133 | } | |
134 | ||
135 | //____________________________________________________________ | |
136 | inline void AliTRDseedV1::Init(const AliRieman *rieman) | |
137 | { | |
138 | fZref[0] = rieman->GetZat(fX0); | |
139 | fZref[1] = rieman->GetDZat(fX0); | |
140 | fYref[0] = rieman->GetYat(fX0); | |
141 | fYref[1] = rieman->GetDYat(fX0); | |
142 | fC = rieman->GetC(); | |
143 | fChi2 = rieman->GetChi2(); | |
144 | } | |
145 | ||
146 | //____________________________________________________________ | |
147 | inline AliTRDcluster* AliTRDseedV1::NextCluster() | |
148 | { | |
149 | fClusterIdx++; fClusterIter++; | |
150 | while(!(*fClusterIter) && fClusterIdx < AliTRDseed::knTimebins){ fClusterIdx++; fClusterIter++;} | |
151 | return *fClusterIter; | |
152 | } | |
153 | ||
154 | #endif | |
155 | ||
156 | ||
157 |