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e4f2f73d | 1 | #ifndef ALITRDSEEDV1_H |
2 | #define ALITRDSEEDV1_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
e44586fb | 4 | * See cxx source for full Copyright notice */ |
e4f2f73d | 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 | ||
ae4e8b84 | 18 | #ifndef ALITRDGEOMETRY_H |
19 | #include "AliTRDgeometry.h" | |
20 | #endif | |
21 | ||
0906e73e | 22 | #ifndef ALIPID_H |
23 | #include "AliPID.h" | |
24 | #endif | |
25 | ||
e4f2f73d | 26 | #ifndef ALIRIEMAN_H |
27 | #include "AliRieman.h" | |
28 | #endif | |
29 | ||
30 | class TTreeSRedirector; | |
31 | ||
32 | class AliRieman; | |
33 | ||
eb38ed55 | 34 | class AliTRDtrackingChamber; |
e4f2f73d | 35 | class AliTRDcluster; |
f3d3af1b | 36 | class AliTRDtrackV1; |
3a039a31 | 37 | class AliTRDReconstructor; |
e4f2f73d | 38 | class AliTRDseedV1 : public AliTRDseed |
39 | { | |
fbb2ea06 | 40 | |
0906e73e | 41 | public: |
42 | ||
e44586fb | 43 | enum { |
44 | knSlices = 10 | |
45 | }; | |
2e2915e7 | 46 | // bits from 0-13 are reserved by ROOT (see TObject.h) |
e44586fb | 47 | enum AliTRDtrackletStatus { |
2e2915e7 | 48 | kOwner = BIT(14) |
49 | , kRowCross = BIT(15) | |
e44586fb | 50 | }; |
51 | ||
ae4e8b84 | 52 | AliTRDseedV1(Int_t det = -1); |
e44586fb | 53 | ~AliTRDseedV1(); |
54 | AliTRDseedV1(const AliTRDseedV1 &ref); | |
55 | AliTRDseedV1& operator=(const AliTRDseedV1 &ref); | |
56 | ||
203967fc | 57 | Bool_t AttachClustersIter( |
58 | AliTRDtrackingChamber *chamber, Float_t quality, | |
59 | Bool_t kZcorr = kFALSE, AliTRDcluster *c=0x0); | |
60 | Bool_t AttachClusters( | |
b1957d3c | 61 | AliTRDtrackingChamber *chamber, Bool_t tilt = kFALSE); |
203967fc | 62 | void Bootstrap(const AliTRDReconstructor *rec); |
63 | void CookdEdx(Int_t nslices); | |
d937ad7a | 64 | Bool_t Fit(Bool_t tilt=kTRUE, Int_t errors = 2); |
203967fc | 65 | |
66 | Bool_t Init(AliTRDtrackV1 *track); | |
e44586fb | 67 | inline void Init(const AliRieman *fit); |
203967fc | 68 | Bool_t IsEqual(const TObject *inTracklet) const; |
e44586fb | 69 | Bool_t IsOwner() const { return TestBit(kOwner);} |
70 | Bool_t IsRowCross() const { return TestBit(kRowCross);} | |
71 | ||
72 | inline Float_t GetChi2Z(const Float_t z = 999.) const; | |
73 | inline Float_t GetChi2Y(const Float_t y = 999.) const; | |
d937ad7a | 74 | static void GetClusterXY(const AliTRDcluster *c, Double_t &x, Double_t &y); |
e44586fb | 75 | void GetCovAt(Double_t x, Double_t *cov) const; |
d937ad7a | 76 | void GetCovXY(Double_t *cov) const { memcpy(cov, &fCov[0], 3*sizeof(Double_t));} |
ac6764f5 | 77 | void GetCovRef(Double_t *cov) const { memcpy(cov, &fRefCov[0], 3*sizeof(Double_t));} |
203967fc | 78 | Double_t* GetCrossXYZ() { return &fCross[0];} |
79 | Double_t GetCrossSz2() const { return fCross[3];} | |
80 | Float_t GetdX() const { return fdX;} | |
81 | Float_t* GetdEdx() { return &fdEdx[0];} | |
e44586fb | 82 | Float_t GetdQdl(Int_t ic) const; |
203967fc | 83 | Int_t GetDetector() const { return fDet;} |
d937ad7a | 84 | Float_t GetExB() const { return fExB;} |
203967fc | 85 | Double_t GetMomentum() const { return fMom;} |
86 | Int_t GetN() const { return fN2;} | |
e44586fb | 87 | Float_t GetQuality(Bool_t kZcorr) const; |
ae4e8b84 | 88 | Int_t GetPlane() const { return AliTRDgeometry::GetLayer(fDet); } |
89 | ||
e44586fb | 90 | Double_t* GetProbability(); |
91 | Double_t GetSnp() const { return fSnp;} | |
92 | Double_t GetTgl() const { return fTgl;} | |
b1957d3c | 93 | Float_t GetXref() const { return fX0 - fXref;} |
94 | Double_t GetYat(Double_t x) const { return fYfit[0] - fYfit[1] * (fX0-x);} | |
95 | Double_t GetZat(Double_t x) const { return fZfit[0] - fZfit[1] * (fX0-x);} | |
e44586fb | 96 | |
ae4e8b84 | 97 | inline AliTRDcluster* NextCluster(); |
71ea19a3 | 98 | inline AliTRDcluster* PrevCluster(); |
e44586fb | 99 | void Print(Option_t *o = "") const; |
71ea19a3 | 100 | inline void ResetClusterIter(Bool_t forward = kTRUE); |
ae4e8b84 | 101 | |
0849f128 | 102 | void SetCovRef(const Double_t *cov) { memcpy(&fRefCov[0], cov, 3*sizeof(Double_t));} |
203967fc | 103 | void SetMomentum(Double_t mom){ fMom = mom;} |
29b87567 | 104 | void SetOwner(); |
203967fc | 105 | void SetDetector(Int_t d) { fDet = d; } |
bee2b41e | 106 | void SetDX(Float_t inDX) { fdX = inDX;} |
203967fc | 107 | void SetSnp(Double_t snp) { fSnp = snp;} |
108 | void SetTgl(Double_t tgl) { fTgl = tgl;} | |
3a039a31 | 109 | void SetReconstructor(const AliTRDReconstructor *rec) {fReconstructor = rec;} |
b1957d3c | 110 | void UpDate(const AliTRDtrackV1* trk); |
e4f2f73d | 111 | |
d937ad7a | 112 | protected: |
e44586fb | 113 | void Copy(TObject &ref) const; |
d937ad7a | 114 | void SetExB(); |
e4f2f73d | 115 | |
e44586fb | 116 | private: |
0ae89c5d | 117 | const AliTRDReconstructor *fReconstructor;//! local reconstructor |
ae4e8b84 | 118 | AliTRDcluster **fClusterIter; //! clusters iterator |
71ea19a3 | 119 | Char_t fClusterIdx; //! clusters iterator |
ae4e8b84 | 120 | Int_t fDet; // TRD detector |
e44586fb | 121 | Float_t fMom; // Momentum estimate for tracklet [GeV/c] |
122 | Float_t fSnp; // sin of track with respect to x direction in XY plane | |
123 | Float_t fTgl; // tg of track with respect to x direction in XZ plane | |
124 | Float_t fdX; // length of time bin | |
6e4d4425 | 125 | Float_t fXref; // average radial position of clusters |
d937ad7a | 126 | Float_t fExB; // tg(a_L) for the tracklet reagion |
6e4d4425 | 127 | Float_t fdEdx[knSlices]; // dE/dx measurements for tracklet |
128 | Double_t fCross[4]; // spatial parameters of the pad row crossing | |
129 | Double_t fRefCov[3]; // covariance matrix of the track in the yz plane | |
d937ad7a | 130 | Double_t fCov[3]; // covariance matrix of the tracklet in the xy plane |
e44586fb | 131 | Double_t fProb[AliPID::kSPECIES]; // PID probabilities |
e4f2f73d | 132 | |
d937ad7a | 133 | ClassDef(AliTRDseedV1, 4) // New TRD seed |
e4f2f73d | 134 | |
135 | }; | |
136 | ||
137 | //____________________________________________________________ | |
138 | inline Float_t AliTRDseedV1::GetChi2Z(const Float_t z) const | |
139 | { | |
e44586fb | 140 | Float_t z1 = (z == 999.) ? fMeanz : z; |
141 | Float_t chi = fZref[0] - z1; | |
142 | return chi*chi; | |
e4f2f73d | 143 | } |
144 | ||
145 | //____________________________________________________________ | |
146 | inline Float_t AliTRDseedV1::GetChi2Y(const Float_t y) const | |
147 | { | |
e44586fb | 148 | Float_t y1 = (y == 999.) ? fYfitR[0] : y; |
149 | Float_t chi = fYref[0] - y1; | |
150 | return chi*chi; | |
e4f2f73d | 151 | } |
152 | ||
153 | //____________________________________________________________ | |
0906e73e | 154 | inline void AliTRDseedV1::Init(const AliRieman *rieman) |
e4f2f73d | 155 | { |
e44586fb | 156 | fZref[0] = rieman->GetZat(fX0); |
157 | fZref[1] = rieman->GetDZat(fX0); | |
158 | fYref[0] = rieman->GetYat(fX0); | |
159 | fYref[1] = rieman->GetDYat(fX0); | |
55ef6967 | 160 | fC = rieman->GetC(); |
161 | fChi2 = rieman->GetChi2(); | |
e4f2f73d | 162 | } |
163 | ||
ae4e8b84 | 164 | //____________________________________________________________ |
165 | inline AliTRDcluster* AliTRDseedV1::NextCluster() | |
166 | { | |
71ea19a3 | 167 | // Mimic the usage of STL iterators. |
168 | // Forward iterator | |
169 | ||
ae4e8b84 | 170 | fClusterIdx++; fClusterIter++; |
71ea19a3 | 171 | while(fClusterIdx < AliTRDseed::knTimebins){ |
172 | if(!(*fClusterIter)){ | |
173 | fClusterIdx++; | |
174 | fClusterIter++; | |
175 | continue; | |
176 | } | |
177 | return *fClusterIter; | |
178 | } | |
179 | return 0x0; | |
180 | } | |
181 | ||
182 | //____________________________________________________________ | |
183 | inline AliTRDcluster* AliTRDseedV1::PrevCluster() | |
184 | { | |
185 | // Mimic the usage of STL iterators. | |
186 | // Backward iterator | |
187 | ||
188 | fClusterIdx--; fClusterIter--; | |
189 | while(fClusterIdx >= 0){ | |
190 | if(!(*fClusterIter)){ | |
191 | fClusterIdx--; | |
192 | fClusterIter--; | |
193 | continue; | |
194 | } | |
195 | return *fClusterIter; | |
196 | } | |
197 | return 0x0; | |
198 | } | |
199 | ||
200 | //____________________________________________________________ | |
201 | inline void AliTRDseedV1::ResetClusterIter(Bool_t forward) | |
202 | { | |
203 | // Mimic the usage of STL iterators. | |
204 | // Facilitate the usage of NextCluster for forward like | |
205 | // iterator (kTRUE) and PrevCluster for backward like iterator (kFALSE) | |
206 | ||
207 | if(forward){ | |
208 | fClusterIter = &fClusters[0]; fClusterIter--; | |
209 | fClusterIdx=-1; | |
210 | } else { | |
211 | fClusterIter = &fClusters[AliTRDseed::knTimebins-1]; fClusterIter++; | |
212 | fClusterIdx=AliTRDseed::knTimebins; | |
213 | } | |
ae4e8b84 | 214 | } |
215 | ||
e4f2f73d | 216 | #endif |
217 | ||
47d5d320 | 218 | |
6e49cfdb | 219 |