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006b5f7f | 1 | #ifndef ALIITSTRACKV2_H |
2 | #define ALIITSTRACKV2_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | //------------------------------------------------------------------------- | |
7 | // ITS Track Class | |
8 | // | |
9 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch | |
a9a2d814 | 10 | // dEdx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch |
006b5f7f | 11 | //------------------------------------------------------------------------- |
12 | ||
006b5f7f | 13 | #include <AliKalmanTrack.h> |
44347160 | 14 | #include "AliITSRecoParam.h" |
e50912db | 15 | #include "AliITSgeomTGeo.h" |
006b5f7f | 16 | |
ae00569a | 17 | /* $Id$ */ |
18 | ||
83d73500 | 19 | class AliESDtrack; |
58e536c5 | 20 | class AliESDVertex; |
006b5f7f | 21 | |
22 | //_____________________________________________________________________________ | |
8676d691 | 23 | class AliITStrackV2 : public AliKalmanTrack { |
006b5f7f | 24 | public: |
22b13da0 | 25 | AliITStrackV2(); |
67c3dcbe | 26 | AliITStrackV2(AliESDtrack& t,Bool_t c=kFALSE) throw (const Char_t *); |
006b5f7f | 27 | AliITStrackV2(const AliITStrackV2& t); |
43d2197f | 28 | ~AliITStrackV2(){fESDtrack=0;} |
6c94f330 | 29 | |
e50912db | 30 | Bool_t CorrectForMeanMaterial(Double_t xOverX0, Double_t xTimesRho, |
31 | Bool_t anglecorr=kFALSE) { | |
32 | return AliExternalTrackParam::CorrectForMeanMaterial(xOverX0,xTimesRho,GetMass(),anglecorr); | |
33 | } | |
34 | Bool_t CorrectForMaterial(Double_t d, Double_t x0=AliITSRecoParam::GetX0Air()) { | |
35 | // deprecated: use CorrectForMeanMaterial instead | |
6c94f330 | 36 | return AliExternalTrackParam::CorrectForMaterial(d,x0,GetMass()); |
37 | } | |
e50912db | 38 | Bool_t PropagateTo(Double_t xr, Double_t d, Double_t x0=AliITSRecoParam::GetX0Air()); |
39 | Bool_t PropagateToTGeo(Double_t xToGo, Int_t nstep, Double_t &xOverX0, Double_t &xTimesRho); | |
40 | Bool_t PropagateToTGeo(Double_t xToGo, Int_t nstep=1) { | |
41 | Double_t dummy1,dummy2; return PropagateToTGeo(xToGo,nstep,dummy1,dummy2); | |
afd25725 | 42 | } |
6c94f330 | 43 | Double_t GetPredictedChi2(const AliCluster *cluster) const; |
44 | Bool_t Update(const AliCluster *cl, Double_t chi2, Int_t i); | |
45 | ||
e50912db | 46 | Bool_t PropagateToVertex(const AliESDVertex *v,Double_t d=0.,Double_t x0=0.); |
6c94f330 | 47 | Bool_t Propagate(Double_t alpha, Double_t xr); |
9be1d1c7 | 48 | Bool_t Propagate(Double_t xr) { return Propagate(GetAlpha(),xr); } |
afd25725 | 49 | Bool_t MeanBudgetToPrimVertex(Double_t xyz[3], Double_t step, Double_t &d) const; |
6c94f330 | 50 | Bool_t Improve(Double_t x0,Double_t xyz[3],Double_t ers[3]); |
51 | ||
7f6ddf58 | 52 | void SetdEdx(Double_t dedx) {fdEdx=dedx;} |
a9a2d814 | 53 | void SetSampledEdx(Float_t q, Int_t i); |
b9671574 | 54 | Float_t GetSampledEdx(Int_t i) const {return fdEdxSample[i];} |
a9a2d814 | 55 | void CookdEdx(Double_t low=0., Double_t up=0.51); |
006b5f7f | 56 | void SetDetectorIndex(Int_t i) {SetLabel(i);} |
7ac23097 | 57 | void ResetClusters(); |
15dd636f | 58 | void UpdateESDtrack(ULong_t flags) const; |
e43c066c | 59 | |
1aedd96e | 60 | AliESDtrack *GetESDtrack() const {return fESDtrack;} |
e43c066c | 61 | |
006b5f7f | 62 | Int_t GetDetectorIndex() const {return GetLabel();} |
7f6ddf58 | 63 | Double_t GetdEdx() const {return fdEdx;} |
83d73500 | 64 | Double_t GetPIDsignal() const {return GetdEdx();} |
6c94f330 | 65 | Double_t GetC() const {return AliExternalTrackParam::GetC(GetBz());} |
66 | Double_t GetD(Double_t x, Double_t y) const { | |
67 | return AliExternalTrackParam::GetD(x,y,GetBz()); | |
68 | } | |
69 | void GetDZ(Double_t xv, Double_t yv, Double_t zv, Float_t dz[2]) const { | |
70 | return AliExternalTrackParam::GetDZ(xv,yv,zv,GetBz(),dz); | |
71 | } | |
72 | ||
e50912db | 73 | Bool_t GetGlobalXYZat(Double_t xloc,Double_t &x,Double_t &y,Double_t &z) const; |
8602c008 | 74 | Bool_t GetPhiZat(Double_t r,Double_t &phi,Double_t &z) const; |
e50912db | 75 | Bool_t GetLocalXat(Double_t r,Double_t &xloc) const; |
6c94f330 | 76 | |
006b5f7f | 77 | Int_t Compare(const TObject *o) const; |
006b5f7f | 78 | Int_t GetClusterIndex(Int_t i) const {return fIndex[i];} |
ae00569a | 79 | void SetModuleIndex(Int_t ilayer,Int_t idx) {fModule[ilayer]=idx;} |
80 | Int_t GetModuleIndex(Int_t ilayer) const {return fModule[ilayer];} | |
81 | void SetModuleIndexInfo(Int_t ilayer,Int_t idet,Int_t status=1,Float_t xloc=0,Float_t zloc=0); | |
82 | Bool_t GetModuleIndexInfo(Int_t ilayer,Int_t &idet,Int_t &status,Float_t &xloc,Float_t &zloc) const; | |
6c94f330 | 83 | Bool_t Invariant() const; |
ef7253ac | 84 | |
ae00569a | 85 | void SetExtraCluster(Int_t ilayer, Int_t idx) {fIndex[AliITSgeomTGeo::kNLayers+ilayer]=idx;} |
86 | Int_t GetExtraCluster(Int_t ilayer) const {return fIndex[AliITSgeomTGeo::kNLayers+ilayer];} | |
87 | ||
88 | void SetExtraModule(Int_t ilayer, Int_t idx) {fModule[AliITSgeomTGeo::kNLayers+ilayer]=idx;} | |
89 | Int_t GetExtraModule(Int_t ilayer) const {return fModule[AliITSgeomTGeo::kNLayers+ilayer];} | |
c84a5e9e | 90 | |
6c94f330 | 91 | protected: |
92 | Double_t GetBz() const ; | |
93 | Double_t fdEdx; // dE/dx | |
8602c008 | 94 | |
95 | static const Int_t fgkWARN; //! used for debugging purposes | |
6c94f330 | 96 | Float_t fdEdxSample[4]; // array of dE/dx samples b.b. |
15dd636f | 97 | |
e50912db | 98 | Int_t fIndex[2*AliITSgeomTGeo::kNLayers]; // indices of associated clusters |
15dd636f | 99 | |
ae00569a | 100 | Int_t fModule[2*AliITSgeomTGeo::kNLayers]; // indices of crossed modules: |
101 | // see SetModuleIndexInfo() | |
ef7253ac | 102 | AliESDtrack *fESDtrack; //! pointer to the connected ESD track |
006b5f7f | 103 | |
6c94f330 | 104 | private: |
105 | AliITStrackV2 &operator=(const AliITStrackV2 &tr); | |
8602c008 | 106 | ClassDef(AliITStrackV2,7) //ITS reconstructed track |
6c94f330 | 107 | }; |
a9a2d814 | 108 | |
ae00569a | 109 | inline void AliITStrackV2::SetSampledEdx(Float_t q, Int_t i) { |
23efe5f1 | 110 | //---------------------------------------------------------------------- |
a9a2d814 | 111 | // This function stores dEdx sample corrected for the track segment length |
112 | // Origin: Boris Batyunya, JINR, Boris.Batiounia@cern.ch | |
23efe5f1 | 113 | //---------------------------------------------------------------------- |
a9a2d814 | 114 | if (i<0) return; |
115 | if (i>3) return; | |
23efe5f1 | 116 | Double_t s=GetSnp(), t=GetTgl(); |
23efe5f1 | 117 | q *= TMath::Sqrt((1-s*s)/(1+t*t)); |
118 | fdEdxSample[i]=q; | |
ae00569a | 119 | return; |
23efe5f1 | 120 | } |
c84a5e9e | 121 | |
ae00569a | 122 | inline void AliITStrackV2::SetModuleIndexInfo(Int_t ilayer,Int_t idet,Int_t status, |
123 | Float_t xloc,Float_t zloc) { | |
124 | //---------------------------------------------------------------------- | |
125 | // This function encodes in the module number also the status of cluster association | |
126 | // "status" can have the following values: | |
127 | // 1 "found" (cluster is associated), | |
128 | // 2 "dead" (module is dead from OCDB), | |
129 | // 3 "skipped" (module or layer forced to be skipped), | |
130 | // 4 "outinz" (track out of z acceptance), | |
131 | // 5 "nocls" (no clusters in the road), | |
132 | // 6 "norefit" (cluster rejected during refit) | |
133 | // 7 "deadzspd" (holes in z in SPD) | |
134 | // WARNING: THIS METHOD HAS TO BE SYNCHRONIZED WITH AliESDtrack::GetITSModuleIndexInfo()! | |
135 | //---------------------------------------------------------------------- | |
136 | ||
137 | if(idet<0) { | |
138 | idet=0; | |
139 | } else { | |
140 | // same detector numbering as in AliITSCalib classes | |
141 | if(ilayer==1) idet+=AliITSgeomTGeo::GetNLadders(1)*AliITSgeomTGeo::GetNDetectors(1); | |
142 | if(ilayer==3) idet+=AliITSgeomTGeo::GetNLadders(3)*AliITSgeomTGeo::GetNDetectors(3); | |
143 | if(ilayer==5) idet+=AliITSgeomTGeo::GetNLadders(5)*AliITSgeomTGeo::GetNDetectors(5); | |
144 | } | |
145 | ||
146 | Int_t xInt = Int_t(xloc*10.); | |
147 | Int_t zInt = Int_t(zloc*10.); | |
148 | ||
5af4a2d0 | 149 | if(TMath::Abs(xloc*10.-(Float_t)xInt)>0.5){ |
150 | if(zloc>0) { | |
151 | xInt++; | |
152 | } | |
153 | else { | |
154 | xInt--; | |
155 | } | |
156 | } | |
157 | if(TMath::Abs(zloc*10.-(Float_t)zInt)>0.5){ | |
158 | if(zloc>0) { | |
159 | zInt++; | |
160 | } | |
161 | else { | |
162 | zInt--; | |
163 | } | |
164 | } | |
ae00569a | 165 | Int_t signs=0; |
166 | if(xInt>=0 && zInt>=0) signs=10000; | |
167 | if(xInt>=0 && zInt<0) signs=20000; | |
168 | if(xInt<0 && zInt>=0) signs=30000; | |
169 | if(xInt<0 && zInt<0) signs=40000; | |
170 | ||
171 | Int_t modindex = signs; | |
172 | ||
173 | modindex += TMath::Abs(zInt); | |
174 | modindex += TMath::Abs(xInt)*100; | |
175 | ||
176 | modindex += status*100000; | |
177 | ||
178 | modindex += idet*1000000; | |
179 | ||
180 | SetModuleIndex(ilayer,modindex); | |
181 | return; | |
182 | } | |
183 | ||
184 | inline Bool_t AliITStrackV2::GetModuleIndexInfo(Int_t ilayer,Int_t &idet,Int_t &status, | |
185 | Float_t &xloc,Float_t &zloc) const { | |
186 | //---------------------------------------------------------------------- | |
187 | // This function encodes in the module number also the status of cluster association | |
188 | // "status" can have the following values: | |
189 | // 1 "found" (cluster is associated), | |
190 | // 2 "dead" (module is dead from OCDB), | |
191 | // 3 "skipped" (module or layer forced to be skipped), | |
192 | // 4 "outinz" (track out of z acceptance), | |
193 | // 5 "nocls" (no clusters in the road), | |
194 | // 6 "norefit" (cluster rejected during refit), | |
195 | // 7 "deadzspd" (holes in z in SPD) | |
196 | // Also given are the coordinates of the crossing point of track and module | |
197 | // (in the local module ref. system) | |
198 | // WARNING: THIS METHOD HAS TO BE SYNCHRONIZED WITH AliESDtrack::GetITSModuleIndexInfo()! | |
199 | //---------------------------------------------------------------------- | |
200 | ||
201 | ||
202 | if(fModule[ilayer]==-1) { | |
203 | AliError("fModule was not set !"); | |
204 | idet = -1; | |
205 | status=0; | |
206 | xloc=-99.; zloc=-99.; | |
207 | return kFALSE; | |
208 | } | |
209 | ||
210 | Int_t module = fModule[ilayer]; | |
211 | ||
212 | idet = Int_t(module/1000000); | |
213 | ||
214 | module -= idet*1000000; | |
215 | ||
216 | status = Int_t(module/100000); | |
217 | ||
218 | module -= status*100000; | |
219 | ||
220 | Int_t signs = Int_t(module/10000); | |
221 | ||
222 | module-=signs*10000; | |
223 | ||
224 | Int_t xInt = Int_t(module/100); | |
225 | module -= xInt*100; | |
226 | ||
227 | Int_t zInt = module; | |
228 | ||
229 | if(signs==1) { xInt*=1; zInt*=1; } | |
230 | if(signs==2) { xInt*=1; zInt*=-1; } | |
231 | if(signs==3) { xInt*=-1; zInt*=1; } | |
232 | if(signs==4) { xInt*=-1; zInt*=-1; } | |
233 | ||
234 | xloc = 0.1*(Float_t)xInt; | |
235 | zloc = 0.1*(Float_t)zInt; | |
236 | ||
237 | if(status==4) idet = -1; | |
238 | ||
239 | return kTRUE; | |
240 | } | |
241 | ||
242 | ||
006b5f7f | 243 | #endif |
244 | ||
245 |