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df9db588 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | //------------------------------------------------------------------------- | |
4f6e22bd | 19 | // AOD track implementation of AliVTrack |
df9db588 | 20 | // Author: Markus Oldenburg, CERN |
0c5f89fb | 21 | // Markus.Oldenburg@cern.ch |
df9db588 | 22 | //------------------------------------------------------------------------- |
23 | ||
086400fc | 24 | #include <TVector3.h> |
8ac4fa64 | 25 | #include "AliLog.h" |
6dc40b1c | 26 | #include "AliExternalTrackParam.h" |
27 | #include "AliVVertex.h" | |
00a38d07 | 28 | #include "AliDetectorPID.h" |
aab77ed0 | 29 | #include "AliAODEvent.h" |
567624b5 | 30 | #include "AliAODHMPIDrings.h" |
31 | ||
32 | #include "AliAODTrack.h" | |
df9db588 | 33 | |
34 | ClassImp(AliAODTrack) | |
35 | ||
36 | //______________________________________________________________________________ | |
37 | AliAODTrack::AliAODTrack() : | |
4f6e22bd | 38 | AliVTrack(), |
f43586f0 | 39 | fRAtAbsorberEnd(0.), |
1912763f | 40 | fChi2perNDF(-999.), |
9333290e | 41 | fChi2MatchTrigger(0.), |
6efb741f | 42 | fFlags(0), |
df9db588 | 43 | fLabel(-999), |
a2c30af1 | 44 | fTOFLabel(), |
9b5c8b95 | 45 | fTrackLength(0), |
1912763f | 46 | fITSMuonClusterMap(0), |
0a2dcc83 | 47 | fMUONtrigHitsMapTrg(0), |
48 | fMUONtrigHitsMapTrk(0), | |
9333290e | 49 | fFilterMap(0), |
bcabd0e4 | 50 | fTPCFitMap(), |
d999f2e6 | 51 | fTPCClusterMap(), |
52 | fTPCSharedMap(), | |
3c01c166 | 53 | fTPCnclsF(0), |
820214a7 | 54 | fTPCNCrossedRows(0), |
02153d58 | 55 | fID(-999), |
9333290e | 56 | fCharge(-99), |
e1c744ca | 57 | fType(kUndef), |
a7d9ab9e | 58 | fCaloIndex(kEMCALNoMatch), |
9333290e | 59 | fCovMatrix(NULL), |
7be1db84 | 60 | fDetPid(NULL), |
00a38d07 | 61 | fDetectorPID(NULL), |
ed15417e | 62 | fProdVertex(NULL), |
63 | fTrackPhiOnEMCal(-999), | |
aab77ed0 | 64 | fTrackEtaOnEMCal(-999), |
a29b2a8a | 65 | fTrackPtOnEMCal(-999), |
539a5a59 | 66 | fTPCsignalTuned(0), |
a2c30af1 | 67 | fTOFsignalTuned(99999), |
aab77ed0 | 68 | fAODEvent(NULL) |
df9db588 | 69 | { |
70 | // default constructor | |
71 | ||
72 | SetP(); | |
73 | SetPosition((Float_t*)NULL); | |
6c954176 | 74 | SetXYAtDCA(-999., -999.); |
75 | SetPxPyPzAtDCA(-999., -999., -999.); | |
df9db588 | 76 | SetPID((Float_t*)NULL); |
a2c30af1 | 77 | for (Int_t i = 0; i < 3; i++) {fTOFLabel[i] = -1;} |
df9db588 | 78 | } |
79 | ||
80 | //______________________________________________________________________________ | |
02153d58 | 81 | AliAODTrack::AliAODTrack(Short_t id, |
df9db588 | 82 | Int_t label, |
83 | Double_t p[3], | |
84 | Bool_t cartesian, | |
85 | Double_t x[3], | |
86 | Bool_t isDCA, | |
87 | Double_t covMatrix[21], | |
88 | Short_t charge, | |
89 | UChar_t itsClusMap, | |
90 | Double_t pid[10], | |
91 | AliAODVertex *prodVertex, | |
1912763f | 92 | Bool_t usedForVtxFit, |
dc825b15 | 93 | Bool_t usedForPrimVtxFit, |
ec40c484 | 94 | AODTrk_t ttype, |
862ce351 | 95 | UInt_t selectInfo, |
96 | Float_t chi2perNDF) : | |
4f6e22bd | 97 | AliVTrack(), |
f43586f0 | 98 | fRAtAbsorberEnd(0.), |
862ce351 | 99 | fChi2perNDF(chi2perNDF), |
9333290e | 100 | fChi2MatchTrigger(0.), |
6efb741f | 101 | fFlags(0), |
df9db588 | 102 | fLabel(label), |
a2c30af1 | 103 | fTOFLabel(), |
9b5c8b95 | 104 | fTrackLength(0), |
6c954176 | 105 | fITSMuonClusterMap(0), |
0a2dcc83 | 106 | fMUONtrigHitsMapTrg(0), |
107 | fMUONtrigHitsMapTrk(0), | |
9333290e | 108 | fFilterMap(selectInfo), |
bcabd0e4 | 109 | fTPCFitMap(), |
d999f2e6 | 110 | fTPCClusterMap(), |
111 | fTPCSharedMap(), | |
3c01c166 | 112 | fTPCnclsF(0), |
820214a7 | 113 | fTPCNCrossedRows(0), |
02153d58 | 114 | fID(id), |
9333290e | 115 | fCharge(charge), |
e1c744ca | 116 | fType(ttype), |
a7d9ab9e | 117 | fCaloIndex(kEMCALNoMatch), |
9333290e | 118 | fCovMatrix(NULL), |
7be1db84 | 119 | fDetPid(NULL), |
00a38d07 | 120 | fDetectorPID(NULL), |
ed15417e | 121 | fProdVertex(prodVertex), |
122 | fTrackPhiOnEMCal(-999), | |
aab77ed0 | 123 | fTrackEtaOnEMCal(-999), |
a29b2a8a | 124 | fTrackPtOnEMCal(-999), |
539a5a59 | 125 | fTPCsignalTuned(0), |
a2c30af1 | 126 | fTOFsignalTuned(99999), |
aab77ed0 | 127 | fAODEvent(NULL) |
df9db588 | 128 | { |
129 | // constructor | |
130 | ||
131 | SetP(p, cartesian); | |
132 | SetPosition(x, isDCA); | |
6c954176 | 133 | SetXYAtDCA(-999., -999.); |
134 | SetPxPyPzAtDCA(-999., -999., -999.); | |
1912763f | 135 | SetUsedForVtxFit(usedForVtxFit); |
dc825b15 | 136 | SetUsedForPrimVtxFit(usedForPrimVtxFit); |
df9db588 | 137 | if(covMatrix) SetCovMatrix(covMatrix); |
138 | SetPID(pid); | |
6c954176 | 139 | SetITSClusterMap(itsClusMap); |
a2c30af1 | 140 | for (Int_t i=0;i<3;i++) {fTOFLabel[i]=-1;} |
df9db588 | 141 | } |
142 | ||
143 | //______________________________________________________________________________ | |
02153d58 | 144 | AliAODTrack::AliAODTrack(Short_t id, |
df9db588 | 145 | Int_t label, |
146 | Float_t p[3], | |
147 | Bool_t cartesian, | |
148 | Float_t x[3], | |
149 | Bool_t isDCA, | |
150 | Float_t covMatrix[21], | |
151 | Short_t charge, | |
152 | UChar_t itsClusMap, | |
153 | Float_t pid[10], | |
154 | AliAODVertex *prodVertex, | |
1912763f | 155 | Bool_t usedForVtxFit, |
dc825b15 | 156 | Bool_t usedForPrimVtxFit, |
ec40c484 | 157 | AODTrk_t ttype, |
862ce351 | 158 | UInt_t selectInfo, |
159 | Float_t chi2perNDF) : | |
4f6e22bd | 160 | AliVTrack(), |
f43586f0 | 161 | fRAtAbsorberEnd(0.), |
862ce351 | 162 | fChi2perNDF(chi2perNDF), |
9333290e | 163 | fChi2MatchTrigger(0.), |
6efb741f | 164 | fFlags(0), |
df9db588 | 165 | fLabel(label), |
a2c30af1 | 166 | fTOFLabel(), |
9b5c8b95 | 167 | fTrackLength(0), |
6c954176 | 168 | fITSMuonClusterMap(0), |
0a2dcc83 | 169 | fMUONtrigHitsMapTrg(0), |
170 | fMUONtrigHitsMapTrk(0), | |
9333290e | 171 | fFilterMap(selectInfo), |
bcabd0e4 | 172 | fTPCFitMap(), |
d999f2e6 | 173 | fTPCClusterMap(), |
174 | fTPCSharedMap(), | |
3c01c166 | 175 | fTPCnclsF(0), |
820214a7 | 176 | fTPCNCrossedRows(0), |
02153d58 | 177 | fID(id), |
9333290e | 178 | fCharge(charge), |
e1c744ca | 179 | fType(ttype), |
a7d9ab9e | 180 | fCaloIndex(kEMCALNoMatch), |
9333290e | 181 | fCovMatrix(NULL), |
7be1db84 | 182 | fDetPid(NULL), |
00a38d07 | 183 | fDetectorPID(NULL), |
ed15417e | 184 | fProdVertex(prodVertex), |
185 | fTrackPhiOnEMCal(-999), | |
aab77ed0 | 186 | fTrackEtaOnEMCal(-999), |
a29b2a8a | 187 | fTrackPtOnEMCal(-999), |
539a5a59 | 188 | fTPCsignalTuned(0), |
a2c30af1 | 189 | fTOFsignalTuned(99999), |
aab77ed0 | 190 | fAODEvent(NULL) |
df9db588 | 191 | { |
192 | // constructor | |
193 | ||
194 | SetP(p, cartesian); | |
195 | SetPosition(x, isDCA); | |
6c954176 | 196 | SetXYAtDCA(-999., -999.); |
197 | SetPxPyPzAtDCA(-999., -999., -999.); | |
1912763f | 198 | SetUsedForVtxFit(usedForVtxFit); |
dc825b15 | 199 | SetUsedForPrimVtxFit(usedForPrimVtxFit); |
df9db588 | 200 | if(covMatrix) SetCovMatrix(covMatrix); |
201 | SetPID(pid); | |
6c954176 | 202 | SetITSClusterMap(itsClusMap); |
a2c30af1 | 203 | for (Int_t i=0;i<3;i++) {fTOFLabel[i]=-1;} |
df9db588 | 204 | } |
205 | ||
df9db588 | 206 | //______________________________________________________________________________ |
207 | AliAODTrack::~AliAODTrack() | |
208 | { | |
209 | // destructor | |
210 | delete fCovMatrix; | |
7450f8ab | 211 | delete fDetPid; |
00a38d07 | 212 | delete fDetectorPID; |
df9db588 | 213 | } |
214 | ||
215 | ||
216 | //______________________________________________________________________________ | |
217 | AliAODTrack::AliAODTrack(const AliAODTrack& trk) : | |
4f6e22bd | 218 | AliVTrack(trk), |
f43586f0 | 219 | fRAtAbsorberEnd(trk.fRAtAbsorberEnd), |
1912763f | 220 | fChi2perNDF(trk.fChi2perNDF), |
9333290e | 221 | fChi2MatchTrigger(trk.fChi2MatchTrigger), |
6efb741f | 222 | fFlags(trk.fFlags), |
df9db588 | 223 | fLabel(trk.fLabel), |
a2c30af1 | 224 | fTOFLabel(), |
9b5c8b95 | 225 | fTrackLength(trk.fTrackLength), |
1912763f | 226 | fITSMuonClusterMap(trk.fITSMuonClusterMap), |
0a2dcc83 | 227 | fMUONtrigHitsMapTrg(trk.fMUONtrigHitsMapTrg), |
228 | fMUONtrigHitsMapTrk(trk.fMUONtrigHitsMapTrk), | |
9333290e | 229 | fFilterMap(trk.fFilterMap), |
bcabd0e4 | 230 | fTPCFitMap(trk.fTPCFitMap), |
d999f2e6 | 231 | fTPCClusterMap(trk.fTPCClusterMap), |
232 | fTPCSharedMap(trk.fTPCSharedMap), | |
3c01c166 | 233 | fTPCnclsF(trk.fTPCnclsF), |
820214a7 | 234 | fTPCNCrossedRows(trk.fTPCNCrossedRows), |
02153d58 | 235 | fID(trk.fID), |
9333290e | 236 | fCharge(trk.fCharge), |
e1c744ca | 237 | fType(trk.fType), |
a7d9ab9e | 238 | fCaloIndex(trk.fCaloIndex), |
9333290e | 239 | fCovMatrix(NULL), |
7be1db84 | 240 | fDetPid(NULL), |
00a38d07 | 241 | fDetectorPID(NULL), |
ed15417e | 242 | fProdVertex(trk.fProdVertex), |
243 | fTrackPhiOnEMCal(trk.fTrackPhiOnEMCal), | |
aab77ed0 | 244 | fTrackEtaOnEMCal(trk.fTrackEtaOnEMCal), |
a29b2a8a | 245 | fTrackPtOnEMCal(trk.fTrackPtOnEMCal), |
539a5a59 | 246 | fTPCsignalTuned(trk.fTPCsignalTuned), |
a2c30af1 | 247 | fTOFsignalTuned(trk.fTOFsignalTuned), |
aab77ed0 | 248 | fAODEvent(trk.fAODEvent) |
df9db588 | 249 | { |
250 | // Copy constructor | |
251 | ||
252 | trk.GetP(fMomentum); | |
253 | trk.GetPosition(fPosition); | |
6c954176 | 254 | SetXYAtDCA(trk.XAtDCA(), trk.YAtDCA()); |
255 | SetPxPyPzAtDCA(trk.PxAtDCA(), trk.PyAtDCA(), trk.PzAtDCA()); | |
1912763f | 256 | SetUsedForVtxFit(trk.GetUsedForVtxFit()); |
dc825b15 | 257 | SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit()); |
5d62ce04 | 258 | if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix); |
7be1db84 | 259 | if(trk.fDetPid) fDetPid=new AliAODPid(*trk.fDetPid); |
df9db588 | 260 | SetPID(trk.fPID); |
00a38d07 | 261 | if (trk.fDetectorPID) fDetectorPID = new AliDetectorPID(*trk.fDetectorPID); |
a2c30af1 | 262 | for (Int_t i = 0; i < 3; i++) {fTOFLabel[i] = trk.fTOFLabel[i];} |
df9db588 | 263 | } |
264 | ||
265 | //______________________________________________________________________________ | |
266 | AliAODTrack& AliAODTrack::operator=(const AliAODTrack& trk) | |
267 | { | |
268 | // Assignment operator | |
269 | if(this!=&trk) { | |
270 | ||
4f6e22bd | 271 | AliVTrack::operator=(trk); |
df9db588 | 272 | |
273 | trk.GetP(fMomentum); | |
274 | trk.GetPosition(fPosition); | |
6c954176 | 275 | SetXYAtDCA(trk.XAtDCA(), trk.YAtDCA()); |
276 | SetPxPyPzAtDCA(trk.PxAtDCA(), trk.PyAtDCA(), trk.PzAtDCA()); | |
05f9607e | 277 | fRAtAbsorberEnd = trk.fRAtAbsorberEnd; |
278 | fChi2perNDF = trk.fChi2perNDF; | |
279 | fChi2MatchTrigger = trk.fChi2MatchTrigger; | |
280 | trk.GetPID(fPID); | |
281 | fFlags = trk.fFlags; | |
282 | fLabel = trk.fLabel; | |
9b5c8b95 | 283 | fTrackLength = trk.fTrackLength; |
9333290e | 284 | fITSMuonClusterMap = trk.fITSMuonClusterMap; |
0a2dcc83 | 285 | fMUONtrigHitsMapTrg = trk.fMUONtrigHitsMapTrg; |
286 | fMUONtrigHitsMapTrk = trk.fMUONtrigHitsMapTrk; | |
05f9607e | 287 | fFilterMap = trk.fFilterMap; |
bcabd0e4 | 288 | fTPCFitMap = trk.fTPCFitMap; |
05f9607e | 289 | fTPCClusterMap = trk.fTPCClusterMap; |
290 | fTPCSharedMap = trk.fTPCSharedMap; | |
291 | fTPCnclsF = trk.fTPCnclsF; | |
820214a7 | 292 | fTPCNCrossedRows = trk.fTPCNCrossedRows; |
05f9607e | 293 | fID = trk.fID; |
294 | fCharge = trk.fCharge; | |
295 | fType = trk.fType; | |
296 | fCaloIndex = trk.fCaloIndex; | |
ed15417e | 297 | fTrackPhiOnEMCal = trk.fTrackPhiOnEMCal; |
298 | fTrackEtaOnEMCal = trk.fTrackEtaOnEMCal; | |
a29b2a8a | 299 | fTrackPtOnEMCal = trk.fTrackPtOnEMCal; |
539a5a59 | 300 | fTPCsignalTuned = trk.fTPCsignalTuned; |
a2c30af1 | 301 | fTOFsignalTuned = trk.fTOFsignalTuned; |
a7d9ab9e | 302 | |
df9db588 | 303 | delete fCovMatrix; |
5d62ce04 | 304 | if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix); |
df9db588 | 305 | else fCovMatrix=NULL; |
df9db588 | 306 | |
05f9607e | 307 | |
308 | fProdVertex = trk.fProdVertex; | |
1912763f | 309 | SetUsedForVtxFit(trk.GetUsedForVtxFit()); |
dc825b15 | 310 | SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit()); |
7be1db84 | 311 | |
00a38d07 | 312 | //detector raw signals |
7be1db84 | 313 | delete fDetPid; |
314 | if(trk.fDetPid) fDetPid=new AliAODPid(*trk.fDetPid); | |
315 | else fDetPid=NULL; | |
05f9607e | 316 | |
00a38d07 | 317 | //calibrated PID cache |
318 | delete fDetectorPID; | |
319 | fDetectorPID=0x0; | |
320 | if (trk.fDetectorPID) fDetectorPID = new AliDetectorPID(*trk.fDetectorPID); | |
a2c30af1 | 321 | for (Int_t i = 0; i < 3; i++) {fTOFLabel[i] = trk.fTOFLabel[i];} |
df9db588 | 322 | } |
323 | ||
324 | return *this; | |
325 | } | |
326 | ||
4697e4fb | 327 | //______________________________________________________________________________ |
328 | Double_t AliAODTrack::M(AODTrkPID_t pid) const | |
329 | { | |
330 | // Returns the mass. | |
9861edc0 | 331 | // Masses for nuclei don't exist in the PDG tables, therefore they were put by hand. |
4697e4fb | 332 | |
333 | switch (pid) { | |
334 | ||
335 | case kElectron : | |
9861edc0 | 336 | return 0.000510999; //TDatabasePDG::Instance()->GetParticle(11/*::kElectron*/)->Mass(); |
4697e4fb | 337 | break; |
338 | ||
339 | case kMuon : | |
9861edc0 | 340 | return 0.1056584; //TDatabasePDG::Instance()->GetParticle(13/*::kMuonMinus*/)->Mass(); |
4697e4fb | 341 | break; |
342 | ||
343 | case kPion : | |
9861edc0 | 344 | return 0.13957; //TDatabasePDG::Instance()->GetParticle(211/*::kPiPlus*/)->Mass(); |
4697e4fb | 345 | break; |
346 | ||
347 | case kKaon : | |
9861edc0 | 348 | return 0.4937; //TDatabasePDG::Instance()->GetParticle(321/*::kKPlus*/)->Mass(); |
4697e4fb | 349 | break; |
350 | ||
351 | case kProton : | |
9861edc0 | 352 | return 0.9382720; //TDatabasePDG::Instance()->GetParticle(2212/*::kProton*/)->Mass(); |
4697e4fb | 353 | break; |
354 | ||
355 | case kDeuteron : | |
9861edc0 | 356 | return 1.8756; //TDatabasePDG::Instance()->GetParticle(1000010020)->Mass(); |
4697e4fb | 357 | break; |
358 | ||
359 | case kTriton : | |
9861edc0 | 360 | return 2.8089; //TDatabasePDG::Instance()->GetParticle(1000010030)->Mass(); |
4697e4fb | 361 | break; |
362 | ||
363 | case kHelium3 : | |
9861edc0 | 364 | return 2.8084; //TDatabasePDG::Instance()->GetParticle(1000020030)->Mass(); |
4697e4fb | 365 | break; |
366 | ||
367 | case kAlpha : | |
9861edc0 | 368 | return 3.7274; //TDatabasePDG::Instance()->GetParticle(1000020040)->Mass(); |
4697e4fb | 369 | break; |
370 | ||
371 | case kUnknown : | |
372 | return -999.; | |
373 | break; | |
374 | ||
375 | default : | |
376 | return -999.; | |
377 | } | |
378 | } | |
379 | ||
380 | //______________________________________________________________________________ | |
381 | Double_t AliAODTrack::E(AODTrkPID_t pid) const | |
382 | { | |
383 | // Returns the energy of the particle of a given pid. | |
384 | ||
385 | if (pid != kUnknown) { // particle was identified | |
386 | Double_t m = M(pid); | |
387 | return TMath::Sqrt(P()*P() + m*m); | |
388 | } else { // pid unknown | |
389 | return -999.; | |
390 | } | |
391 | } | |
392 | ||
393 | //______________________________________________________________________________ | |
394 | Double_t AliAODTrack::Y(AODTrkPID_t pid) const | |
395 | { | |
9861edc0 | 396 | // Returns the rapidity of a particle of a given pid. |
4697e4fb | 397 | |
398 | if (pid != kUnknown) { // particle was identified | |
399 | Double_t e = E(pid); | |
400 | Double_t pz = Pz(); | |
401 | if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz | |
402 | return 0.5*TMath::Log((e+pz)/(e-pz)); | |
403 | } else { // energy not known or equal to pz | |
404 | return -999.; | |
405 | } | |
406 | } else { // pid unknown | |
407 | return -999.; | |
408 | } | |
409 | } | |
410 | ||
411 | //______________________________________________________________________________ | |
412 | Double_t AliAODTrack::Y(Double_t m) const | |
413 | { | |
9861edc0 | 414 | // Returns the rapidity of a particle of a given mass. |
4697e4fb | 415 | |
416 | if (m >= 0.) { // mass makes sense | |
417 | Double_t e = E(m); | |
418 | Double_t pz = Pz(); | |
419 | if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz | |
420 | return 0.5*TMath::Log((e+pz)/(e-pz)); | |
421 | } else { // energy not known or equal to pz | |
422 | return -999.; | |
423 | } | |
424 | } else { // pid unknown | |
425 | return -999.; | |
426 | } | |
427 | } | |
428 | ||
a2c30af1 | 429 | void AliAODTrack::SetTOFLabel(const Int_t *p) { |
430 | // Sets (in TOF) | |
431 | for (Int_t i = 0; i < 3; i++) fTOFLabel[i]=p[i]; | |
432 | } | |
433 | ||
434 | //_______________________________________________________________________ | |
435 | void AliAODTrack::GetTOFLabel(Int_t *p) const { | |
436 | // Gets (in TOF) | |
437 | for (Int_t i=0; i<3; i++) p[i]=fTOFLabel[i]; | |
438 | } | |
439 | ||
4697e4fb | 440 | //______________________________________________________________________________ |
441 | AliAODTrack::AODTrkPID_t AliAODTrack::GetMostProbablePID() const | |
442 | { | |
443 | // Returns the most probable PID array element. | |
444 | ||
445 | Int_t nPID = 10; | |
7ba6f91a | 446 | AODTrkPID_t loc = kUnknown; |
447 | Double_t max = 0.; | |
448 | Bool_t allTheSame = kTRUE; | |
449 | ||
450 | for (Int_t iPID = 0; iPID < nPID; iPID++) { | |
451 | if (fPID[iPID] >= max) { | |
452 | if (fPID[iPID] > max) { | |
453 | allTheSame = kFALSE; | |
454 | max = fPID[iPID]; | |
455 | loc = (AODTrkPID_t)iPID; | |
456 | } else { | |
457 | allTheSame = kTRUE; | |
4697e4fb | 458 | } |
459 | } | |
4697e4fb | 460 | } |
7ba6f91a | 461 | return allTheSame ? kUnknown : loc; |
4697e4fb | 462 | } |
463 | ||
464 | //______________________________________________________________________________ | |
465 | void AliAODTrack::ConvertAliPIDtoAODPID() | |
466 | { | |
467 | // Converts AliPID array. | |
468 | // The numbering scheme is the same for electrons, muons, pions, kaons, and protons. | |
469 | // Everything else has to be set to zero. | |
470 | ||
471 | fPID[kDeuteron] = 0.; | |
8a1418dc | 472 | fPID[kTriton] = 0.; |
473 | fPID[kHelium3] = 0.; | |
474 | fPID[kAlpha] = 0.; | |
475 | fPID[kUnknown] = 0.; | |
4697e4fb | 476 | |
477 | return; | |
478 | } | |
479 | ||
480 | ||
df9db588 | 481 | //______________________________________________________________________________ |
cdd730d0 | 482 | template <typename T> void AliAODTrack::SetP(const T *p, const Bool_t cartesian) |
df9db588 | 483 | { |
8a1418dc | 484 | // Set the momentum |
df9db588 | 485 | |
486 | if (p) { | |
487 | if (cartesian) { | |
16b65f2a | 488 | Double_t pt2 = p[0]*p[0] + p[1]*p[1]; |
0c5f89fb | 489 | Double_t pp = TMath::Sqrt(pt2 + p[2]*p[2]); |
df9db588 | 490 | |
16b65f2a | 491 | fMomentum[0] = TMath::Sqrt(pt2); // pt |
b1a9edc8 | 492 | fMomentum[1] = (pt2 != 0.) ? TMath::Pi()+TMath::ATan2(-p[1], -p[0]) : -999; // phi |
0c5f89fb | 493 | fMomentum[2] = (pp != 0.) ? TMath::ACos(p[2] / pp) : -999.; // theta |
df9db588 | 494 | } else { |
16b65f2a | 495 | fMomentum[0] = p[0]; // pt |
df9db588 | 496 | fMomentum[1] = p[1]; // phi |
497 | fMomentum[2] = p[2]; // theta | |
498 | } | |
499 | } else { | |
500 | fMomentum[0] = -999.; | |
501 | fMomentum[1] = -999.; | |
502 | fMomentum[2] = -999.; | |
503 | } | |
504 | } | |
505 | ||
6e78367a | 506 | /* |
df9db588 | 507 | //______________________________________________________________________________ |
cdd730d0 | 508 | template <typename T> void AliAODTrack::SetPosition(const T *x, const Bool_t dca) |
df9db588 | 509 | { |
510 | // set the position | |
511 | ||
512 | if (x) { | |
513 | if (!dca) { | |
514 | ResetBit(kIsDCA); | |
515 | ||
516 | fPosition[0] = x[0]; | |
517 | fPosition[1] = x[1]; | |
518 | fPosition[2] = x[2]; | |
519 | } else { | |
520 | SetBit(kIsDCA); | |
521 | // don't know any better yet | |
522 | fPosition[0] = -999.; | |
523 | fPosition[1] = -999.; | |
524 | fPosition[2] = -999.; | |
525 | } | |
526 | } else { | |
527 | ResetBit(kIsDCA); | |
528 | ||
529 | fPosition[0] = -999.; | |
530 | fPosition[1] = -999.; | |
531 | fPosition[2] = -999.; | |
532 | } | |
533 | } | |
6e78367a | 534 | */ |
df9db588 | 535 | //______________________________________________________________________________ |
536 | void AliAODTrack::SetDCA(Double_t d, Double_t z) | |
537 | { | |
538 | // set the dca | |
539 | fPosition[0] = d; | |
540 | fPosition[1] = z; | |
541 | fPosition[2] = 0.; | |
542 | SetBit(kIsDCA); | |
543 | } | |
544 | ||
545 | //______________________________________________________________________________ | |
546 | void AliAODTrack::Print(Option_t* /* option */) const | |
547 | { | |
548 | // prints information about AliAODTrack | |
549 | ||
550 | printf("Object name: %s Track type: %s\n", GetName(), GetTitle()); | |
551 | printf(" px = %f\n", Px()); | |
552 | printf(" py = %f\n", Py()); | |
553 | printf(" pz = %f\n", Pz()); | |
554 | printf(" pt = %f\n", Pt()); | |
555 | printf(" 1/pt = %f\n", OneOverPt()); | |
556 | printf(" theta = %f\n", Theta()); | |
557 | printf(" phi = %f\n", Phi()); | |
1912763f | 558 | printf(" chi2/NDF = %f\n", Chi2perNDF()); |
df9db588 | 559 | printf(" charge = %d\n", Charge()); |
df9db588 | 560 | } |
561 | ||
2200238e | 562 | //______________________________________________________________________________ |
563 | void AliAODTrack::SetMatchTrigger(Int_t matchTrig) | |
564 | { | |
565 | // Set the MUON trigger information | |
8ac4fa64 | 566 | switch(matchTrig){ |
e1c744ca | 567 | case 0: // 0 track does not match trigger |
568 | fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff; | |
569 | break; | |
570 | case 1: // 1 track match but does not pass pt cut | |
571 | fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)|0x40000000; | |
572 | break; | |
573 | case 2: // 2 track match Low pt cut | |
574 | fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)|0x80000000; | |
575 | break; | |
576 | case 3: // 3 track match High pt cut | |
577 | fITSMuonClusterMap=fITSMuonClusterMap|0xc0000000; | |
578 | break; | |
579 | default: | |
580 | fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff; | |
8ac4fa64 | 581 | AliWarning(Form("unknown case for matchTrig: %d\n",matchTrig)); |
e1c744ca | 582 | } |
583 | } | |
584 | ||
2200238e | 585 | //______________________________________________________________________________ |
586 | Bool_t AliAODTrack::HitsMuonChamber(Int_t MuonChamber, Int_t cathode) const | |
587 | { | |
588 | // return kTRUE if the track fires the given tracking or trigger chamber. | |
589 | // If the chamber is a trigger one: | |
590 | // - if cathode = 0 or 1, the track matches the corresponding cathode | |
591 | // - if cathode = -1, the track matches both cathodes | |
592 | ||
593 | if (MuonChamber < 0) return kFALSE; | |
594 | ||
595 | if (MuonChamber < 10) return TESTBIT(GetMUONClusterMap(), MuonChamber); | |
596 | ||
597 | if (MuonChamber < 14) { | |
598 | ||
599 | if (cathode < 0) return TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber) && | |
600 | TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber+4); | |
601 | ||
602 | if (cathode < 2) return TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber+(1-cathode)*4); | |
603 | ||
e1c744ca | 604 | } |
2200238e | 605 | |
606 | return kFALSE; | |
e1c744ca | 607 | } |
608 | ||
2200238e | 609 | //______________________________________________________________________________ |
610 | Bool_t AliAODTrack::MatchTriggerDigits() const | |
611 | { | |
612 | // return kTRUE if the track matches a digit on both planes of at least 2 trigger chambers | |
6c954176 | 613 | |
2200238e | 614 | Int_t nMatchedChambers = 0; |
615 | for (Int_t ich=10; ich<14; ich++) if (HitsMuonChamber(ich)) nMatchedChambers++; | |
616 | ||
617 | return (nMatchedChambers >= 2); | |
e1c744ca | 618 | } |
c683ddc2 | 619 | |
6dc40b1c | 620 | //______________________________________________________________________________ |
621 | Bool_t AliAODTrack::PropagateToDCA(const AliVVertex *vtx, | |
622 | Double_t b, Double_t maxd, Double_t dz[2], Double_t covar[3]) | |
623 | { | |
624 | // compute impact parameters to the vertex vtx and their covariance matrix | |
625 | // b is the Bz, needed to propagate correctly the track to vertex | |
626 | // only the track parameters are update after the propagation (pos and mom), | |
627 | // not the covariance matrix. This is OK for propagation over short distance | |
628 | // inside the beam pipe. | |
629 | // return kFALSE is something went wrong | |
630 | ||
631 | // convert to AliExternalTrackParam | |
4ec1ca0f | 632 | AliExternalTrackParam etp; etp.CopyFromVTrack(this); |
6dc40b1c | 633 | |
634 | Float_t xstart = etp.GetX(); | |
635 | if(xstart>3.) { | |
636 | AliError("This method can be used only for propagation inside the beam pipe"); | |
637 | return kFALSE; | |
638 | } | |
639 | ||
640 | if(!etp.PropagateToDCA(vtx,b,maxd,dz,covar)) return kFALSE; | |
641 | ||
642 | // update track position and momentum | |
643 | Double_t mom[3]; | |
644 | etp.GetPxPyPz(mom); | |
645 | SetP(mom,kTRUE); | |
646 | etp.GetXYZ(mom); | |
647 | SetPosition(mom,kFALSE); | |
648 | ||
649 | ||
650 | return kTRUE; | |
651 | } | |
652 | ||
c8fe2783 | 653 | //______________________________________________________________________________ |
654 | Bool_t AliAODTrack::GetPxPyPz(Double_t p[3]) const | |
655 | { | |
656 | //--------------------------------------------------------------------- | |
657 | // This function returns the global track momentum components | |
658 | //--------------------------------------------------------------------- | |
659 | p[0]=Px(); p[1]=Py(); p[2]=Pz(); | |
660 | return kTRUE; | |
661 | } | |
9006fe9c | 662 | |
25f906db | 663 | |
664 | //_______________________________________________________________________ | |
665 | Float_t AliAODTrack::GetTPCClusterInfo(Int_t nNeighbours/*=3*/, Int_t type/*=0*/, Int_t row0, Int_t row1, Int_t bitType ) const | |
9006fe9c | 666 | { |
667 | // | |
25f906db | 668 | // TPC cluster information |
9006fe9c | 669 | // type 0: get fraction of found/findable clusters with neighbourhood definition |
670 | // 1: findable clusters with neighbourhood definition | |
671 | // 2: found clusters | |
25f906db | 672 | // bitType: |
673 | // 0 - all cluster used | |
674 | // 1 - clusters used for the kalman update | |
9006fe9c | 675 | // definition of findable clusters: |
676 | // a cluster is defined as findable if there is another cluster | |
677 | // within +- nNeighbours pad rows. The idea is to overcome threshold | |
678 | // effects with a very simple algorithm. | |
679 | // | |
25f906db | 680 | |
9006fe9c | 681 | |
682 | Int_t found=0; | |
683 | Int_t findable=0; | |
684 | Int_t last=-nNeighbours; | |
25f906db | 685 | const TBits & clusterMap = (bitType%2==0) ? fTPCClusterMap : fTPCFitMap; |
9006fe9c | 686 | |
25f906db | 687 | Int_t upperBound=clusterMap.GetNbits(); |
688 | if (upperBound>row1) upperBound=row1; | |
689 | for (Int_t i=row0; i<upperBound; ++i){ | |
9006fe9c | 690 | //look to current row |
25f906db | 691 | if (clusterMap[i]) { |
9006fe9c | 692 | last=i; |
693 | ++found; | |
694 | ++findable; | |
695 | continue; | |
696 | } | |
697 | //look to nNeighbours before | |
698 | if ((i-last)<=nNeighbours) { | |
699 | ++findable; | |
700 | continue; | |
701 | } | |
702 | //look to nNeighbours after | |
703 | for (Int_t j=i+1; j<i+1+nNeighbours; ++j){ | |
25f906db | 704 | if (clusterMap[j]){ |
9006fe9c | 705 | ++findable; |
706 | break; | |
707 | } | |
708 | } | |
709 | } | |
25f906db | 710 | if (type==2) return found; |
9006fe9c | 711 | if (type==1) return findable; |
712 | ||
713 | if (type==0){ | |
714 | Float_t fraction=0; | |
25f906db | 715 | if (findable>0) |
9006fe9c | 716 | fraction=(Float_t)found/(Float_t)findable; |
25f906db | 717 | else |
9006fe9c | 718 | fraction=0; |
719 | return fraction; | |
25f906db | 720 | } |
9006fe9c | 721 | return 0; // undefined type - default value |
722 | } | |
fd21ec8d | 723 | |
25f906db | 724 | |
fd21ec8d | 725 | //______________________________________________________________________________ |
726 | Double_t AliAODTrack::GetTRDslice(Int_t plane, Int_t slice) const { | |
727 | // | |
728 | // return TRD Pid information | |
729 | // | |
730 | if (!fDetPid) return -1; | |
6736efd5 | 731 | Double32_t *trdSlices=fDetPid->GetTRDslices(); |
fd21ec8d | 732 | if (!trdSlices) return -1; |
733 | if ((plane<0) || (plane>=kTRDnPlanes)) { | |
734 | return -1.; | |
735 | } | |
736 | ||
99e9d5ec | 737 | Int_t ns=fDetPid->GetTRDnSlices()/kTRDnPlanes; |
fd21ec8d | 738 | if ((slice<-1) || (slice>=ns)) { |
739 | return -1.; | |
740 | } | |
741 | ||
742 | if(slice>=0) return trdSlices[plane*ns + slice]; | |
743 | ||
744 | // return average of the dEdx measurements | |
745 | Double_t q=0.; Double32_t *s = &trdSlices[plane*ns]; | |
746 | for (Int_t i=0; i<ns; i++, s++) if((*s)>0.) q+=(*s); | |
747 | return q/ns; | |
748 | } | |
749 | ||
99e9d5ec | 750 | //______________________________________________________________________________ |
751 | UChar_t AliAODTrack::GetTRDntrackletsPID() const{ | |
752 | // | |
753 | // return number of tracklets calculated from the slices | |
754 | // | |
755 | if(!fDetPid) return -1; | |
59a8e853 | 756 | return fDetPid->GetTRDntrackletsPID(); |
757 | } | |
99e9d5ec | 758 | |
59a8e853 | 759 | //______________________________________________________________________________ |
760 | UChar_t AliAODTrack::GetTRDncls(Int_t layer) const { | |
761 | // | |
762 | // return number of TRD clusters | |
763 | // | |
764 | if(!fDetPid || layer > 5) return -1; | |
765 | if(layer < 0) return fDetPid->GetTRDncls(); | |
766 | else return fDetPid->GetTRDncls(layer); | |
99e9d5ec | 767 | } |
768 | ||
fd21ec8d | 769 | //______________________________________________________________________________ |
770 | Double_t AliAODTrack::GetTRDmomentum(Int_t plane, Double_t */*sp*/) const | |
771 | { | |
772 | //Returns momentum estimation | |
773 | // in TRD layer "plane". | |
774 | ||
775 | if (!fDetPid) return -1; | |
c997f0f9 | 776 | const Double_t *trdMomentum=fDetPid->GetTRDmomentum(); |
fd21ec8d | 777 | |
778 | if (!trdMomentum) { | |
779 | return -1.; | |
780 | } | |
781 | if ((plane<0) || (plane>=kTRDnPlanes)) { | |
782 | return -1.; | |
783 | } | |
784 | ||
785 | return trdMomentum[plane]; | |
786 | } | |
76e6ee6a | 787 | |
788 | //_______________________________________________________________________ | |
1cecd6e3 | 789 | Int_t AliAODTrack::GetTOFBunchCrossing(Double_t b, Bool_t) const |
76e6ee6a | 790 | { |
791 | // Returns the number of bunch crossings after trigger (assuming 25ns spacing) | |
76e6ee6a | 792 | const double kSpacing = 25e3; // min interbanch spacing |
793 | const double kShift = 0; | |
3f2db92f | 794 | Int_t bcid = kTOFBCNA; // defualt one |
a512bf97 | 795 | if (!IsOn(kTOFout) || !IsOn(kESDpid)) return bcid; // no info |
796 | // | |
797 | double tdif = GetTOFsignal(); | |
798 | if (IsOn(kTIME)) { // integrated time info is there | |
799 | int pid = (int)GetMostProbablePID(); | |
800 | double ttimes[10]; | |
801 | GetIntegratedTimes(ttimes); | |
802 | tdif -= ttimes[pid]; | |
803 | } | |
804 | else { // assume integrated time info from TOF radius and momentum | |
805 | const double kRTOF = 385.; | |
806 | const double kCSpeed = 3.e-2; // cm/ps | |
807 | double p = P(); | |
808 | if (p<0.001) p = 1.0; | |
809 | double m = M(); | |
810 | double path = kRTOF; // mean TOF radius | |
811 | if (TMath::Abs(b)>kAlmost0) { // account for curvature | |
812 | double curv = Pt()/(b*kB2C); | |
813 | if (curv>kAlmost0) { | |
814 | double tgl = Pz()/Pt(); | |
815 | path = 2./curv*TMath::ASin(kRTOF*curv/2.)*TMath::Sqrt(1.+tgl*tgl); | |
816 | } | |
817 | } | |
818 | tdif -= path/kCSpeed*TMath::Sqrt(1.+m*m/(p*p)); | |
819 | } | |
76e6ee6a | 820 | bcid = TMath::Nint((tdif - kShift)/kSpacing); |
821 | return bcid; | |
822 | } | |
086400fc | 823 | |
00a38d07 | 824 | void AliAODTrack::SetDetectorPID(const AliDetectorPID *pid) |
825 | { | |
826 | // | |
827 | // Set the detector PID | |
828 | // | |
829 | if (fDetectorPID) delete fDetectorPID; | |
830 | fDetectorPID=pid; | |
831 | ||
832 | } | |
833 | ||
567624b5 | 834 | //_____________________________________________________________________________ |
835 | Double_t AliAODTrack::GetHMPIDsignal() const | |
836 | { | |
837 | if(fAODEvent->GetHMPIDringForTrackID(fID)) return fAODEvent->GetHMPIDringForTrackID(fID)->GetHmpSignal(); | |
838 | else return -999.; | |
839 | } | |
840 | ||
841 | //_____________________________________________________________________________ | |
842 | Double_t AliAODTrack::GetHMPIDoccupancy() const | |
843 | { | |
844 | if(fAODEvent->GetHMPIDringForTrackID(fID)) return fAODEvent->GetHMPIDringForTrackID(fID)->GetHmpOccupancy(); | |
845 | else return -999.; | |
846 | } | |
847 | ||
848 | //_____________________________________________________________________________ | |
849 | Int_t AliAODTrack::GetHMPIDcluIdx() const | |
850 | { | |
851 | if(fAODEvent->GetHMPIDringForTrackID(fID)) return fAODEvent->GetHMPIDringForTrackID(fID)->GetHmpCluIdx(); | |
852 | else return -999; | |
853 | } | |
854 | ||
855 | //_____________________________________________________________________________ | |
856 | void AliAODTrack::GetHMPIDtrk(Float_t &x, Float_t &y, Float_t &th, Float_t &ph) const | |
857 | { | |
858 | x = -999; y = -999.; th = -999.; ph = -999.; | |
859 | ||
860 | const AliAODHMPIDrings *ring=fAODEvent->GetHMPIDringForTrackID(fID); | |
861 | if(ring){ | |
862 | x = ring->GetHmpTrackX(); | |
863 | y = ring->GetHmpTrackY(); | |
864 | th = ring->GetHmpTrackTheta(); | |
865 | ph = ring->GetHmpTrackPhi(); | |
866 | } | |
867 | } | |
868 | ||
869 | //_____________________________________________________________________________ | |
870 | void AliAODTrack::GetHMPIDmip(Float_t &x,Float_t &y,Int_t &q, Int_t &nph) const | |
871 | { | |
872 | x = -999; y = -999.; q = -999; nph = -999; | |
873 | ||
874 | const AliAODHMPIDrings *ring=fAODEvent->GetHMPIDringForTrackID(fID); | |
875 | if(ring){ | |
876 | x = ring->GetHmpMipX(); | |
877 | y = ring->GetHmpMipY(); | |
878 | q = (Int_t)ring->GetHmpMipCharge(); | |
879 | nph = (Int_t)ring->GetHmpNumOfPhotonClusters(); | |
880 | } | |
881 | } | |
882 | ||
883 | //_____________________________________________________________________________ | |
884 | Bool_t AliAODTrack::GetOuterHmpPxPyPz(Double_t *p) const | |
885 | { | |
886 | if(fAODEvent->GetHMPIDringForTrackID(fID)) {fAODEvent->GetHMPIDringForTrackID(fID)->GetHmpMom(p); return kTRUE;} | |
887 | ||
888 | else return kFALSE; | |
889 | } | |
086400fc | 890 | //_____________________________________________________________________________ |
891 | Bool_t AliAODTrack::GetXYZAt(Double_t x, Double_t b, Double_t *r) const | |
892 | { | |
893 | //--------------------------------------------------------------------- | |
894 | // This function returns the global track position extrapolated to | |
895 | // the radial position "x" (cm) in the magnetic field "b" (kG) | |
896 | //--------------------------------------------------------------------- | |
897 | ||
898 | //conversion of track parameter representation is | |
899 | //based on the implementation of AliExternalTrackParam::Set(...) | |
900 | //maybe some of this code can be moved to AliVTrack to avoid code duplication | |
901 | const double kSafe = 1e-5; | |
902 | Double_t alpha=0.0; | |
903 | Double_t radPos2 = fPosition[0]*fPosition[0]+fPosition[1]*fPosition[1]; | |
904 | Double_t radMax = 45.; // approximately ITS outer radius | |
905 | if (radPos2 < radMax*radMax) { // inside the ITS | |
906 | alpha = TMath::ATan2(fMomentum[1],fMomentum[0]); | |
907 | } else { // outside the ITS | |
908 | Float_t phiPos = TMath::Pi()+TMath::ATan2(-fPosition[1], -fPosition[0]); | |
909 | alpha = | |
910 | TMath::DegToRad()*(20*((((Int_t)(phiPos*TMath::RadToDeg()))/20))+10); | |
911 | } | |
912 | // | |
913 | Double_t cs=TMath::Cos(alpha), sn=TMath::Sin(alpha); | |
914 | // protection: avoid alpha being too close to 0 or +-pi/2 | |
915 | if (TMath::Abs(sn)<kSafe) { | |
916 | alpha = kSafe; | |
917 | cs=TMath::Cos(alpha); | |
918 | sn=TMath::Sin(alpha); | |
919 | } | |
920 | else if (cs<kSafe) { | |
921 | alpha -= TMath::Sign(kSafe, alpha); | |
922 | cs=TMath::Cos(alpha); | |
923 | sn=TMath::Sin(alpha); | |
924 | } | |
925 | ||
926 | // Get the vertex of origin and the momentum | |
927 | TVector3 ver(fPosition[0],fPosition[1],fPosition[2]); | |
928 | TVector3 mom(fMomentum[0],fMomentum[1],fMomentum[2]); | |
929 | // | |
930 | // avoid momenta along axis | |
931 | if (TMath::Abs(mom[0])<kSafe) mom[0] = TMath::Sign(kSafe*TMath::Abs(mom[1]), mom[0]); | |
932 | if (TMath::Abs(mom[1])<kSafe) mom[1] = TMath::Sign(kSafe*TMath::Abs(mom[0]), mom[1]); | |
933 | ||
934 | // Rotate to the local coordinate system | |
935 | ver.RotateZ(-alpha); | |
936 | mom.RotateZ(-alpha); | |
937 | ||
938 | Double_t param0 = ver.Y(); | |
939 | Double_t param1 = ver.Z(); | |
940 | Double_t param2 = TMath::Sin(mom.Phi()); | |
941 | Double_t param3 = mom.Pz()/mom.Pt(); | |
942 | Double_t param4 = TMath::Sign(1/mom.Pt(),(Double_t)fCharge); | |
943 | ||
944 | //calculate the propagated coordinates | |
945 | //this is based on AliExternalTrackParam::GetXYZAt(Double_t x, Double_t b, Double_t *r) | |
946 | Double_t dx=x-ver.X(); | |
947 | if(TMath::Abs(dx)<=kAlmost0) return GetXYZ(r); | |
948 | ||
949 | Double_t f1=param2; | |
950 | Double_t f2=f1 + dx*param4*b*kB2C; | |
951 | ||
952 | if (TMath::Abs(f1) >= kAlmost1) return kFALSE; | |
953 | if (TMath::Abs(f2) >= kAlmost1) return kFALSE; | |
954 | ||
955 | Double_t r1=TMath::Sqrt((1.-f1)*(1.+f1)), r2=TMath::Sqrt((1.-f2)*(1.+f2)); | |
956 | r[0] = x; | |
957 | r[1] = param0 + dx*(f1+f2)/(r1+r2); | |
958 | r[2] = param1 + dx*(r2 + f2*(f1+f2)/(r1+r2))*param3;//Thanks to Andrea & Peter | |
959 | ||
960 | return Local2GlobalPosition(r,alpha); | |
961 | } | |
962 | ||
963 | ||
74ca66e3 | 964 | //_______________________________________________________ |
965 | void AliAODTrack::GetITSdEdxSamples(Double_t s[4]) const | |
966 | { | |
967 | // get ITS dedx samples | |
968 | if (!fDetPid) for (int i=4;i--;) s[i]=0; | |
969 | else for (int i=4;i--;) s[i] = fDetPid->GetITSdEdxSample(i); | |
970 | } |