changes to the default HLT TPC simulation configuration: send bare ESD instead of...
[u/mrichter/AliRoot.git] / STEER / AliESDtrack.cxx
CommitLineData
ae982df3 1/**************************************************************************
2 * Copyright(c) 1998-1999, 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 **************************************************************************/
ae982df3 15//-----------------------------------------------------------------
16// Implementation of the ESD track class
4427806c 17// ESD = Event Summary Data
15614b8b 18// This is the class to deal with during the phisics analysis of data
4427806c 19// Origin: Iouri Belikov, CERN
20// e-mail: Jouri.Belikov@cern.ch
4df45162 21//
22//
23//
24// What do you need to know before starting analysis
25// (by Marian Ivanov: marian.ivanov@cern.ch)
26//
27//
28// AliESDtrack:
29// 1. What is the AliESDtrack
30// 2. What informations do we store
31// 3. How to use the information for analysis
32//
33//
34// 1.AliESDtrack is the container of the information about the track/particle
35// reconstructed during Barrel Tracking.
36// The track information is propagated from one tracking detector to
37// other using the functionality of AliESDtrack - Current parameters.
38//
39// No global fit model is used.
40// Barrel tracking use Kalman filtering technique, it gives optimal local
41// track parameters at given point under certian assumptions.
42//
43// Kalman filter take into account additional effect which are
44// difficult to handle using global fit.
45// Effects:
46// a.) Multiple scattering
47// b.) Energy loss
48// c.) Non homogenous magnetic field
49//
50// In general case, following barrel detectors are contributing to
51// the Kalman track information:
52// a. TPC
53// b. ITS
54// c. TRD
55//
56// In general 3 reconstruction itteration are performed:
57// 1. Find tracks - sequence TPC->ITS
58// 2. PropagateBack - sequence ITS->TPC->TRD -> Outer PID detectors
59// 3. Refit invward - sequence TRD->TPC->ITS
60// The current tracks are updated after each detector (see bellow).
61// In specical cases a track sanpshots are stored.
62//
63//
64// For some type of analysis (+visualization) track local parameters at
65// different position are neccesary. A snapshots during the track
66// propagation are created.
67// (See AliExternalTrackParam class for desctiption of variables and
68// functionality)
69// Snapshots:
70// a. Current parameters - class itself (AliExternalTrackParam)
71// Contributors: general case TRD->TPC->ITS
72// Preferable usage: Decission - primary or secondary track
73// NOTICE - By default the track parameters are stored at the DCA point
74// to the primary vertex. optimal for primary tracks,
75// far from optimal for secondary tracks.
76// b. Constrained parameters - Kalman information updated with
77// the Primary vertex information
78// Contributors: general case TRD->TPC->ITS
79// Preferable usage: Use only for tracks selected as primary
80// NOTICE - not real constrain - taken as additional measurement
81// with corresponding error
82// Function:
83// const AliExternalTrackParam *GetConstrainedParam() const {return fCp;}
84// c. Inner parameters - Track parameters at inner wall of the TPC
85// Contributors: general case TRD->TPC
86// function:
87// const AliExternalTrackParam *GetInnerParam() const { return fIp;}
88//
89// d. TPCinnerparam - contributors - TPC only
90// Contributors: TPC
91// Preferable usage: Requested for HBT study
92// (smaller correlations as using also ITS information)
93// NOTICE - the track parameters are propagated to the DCA to
94// to primary vertex
95// Optimal for primary, far from optimal for secondary tracks
96// Function:
97// const AliExternalTrackParam *GetTPCInnerParam() const {return fTPCInner;}
98//
99// e. Outer parameters -
100// Contributors- general case - ITS-> TPC -> TRD
101// The last point - Outer parameters radius is determined
102// e.a) Local inclination angle bigger than threshold -
103// Low momenta tracks
104// e.a) Catastrofic energy losss in material
105// e.b) Not further improvement (no space points)
106// Usage:
107// a.) Tracking: Starting parameter for Refit inward
108// b.) Visualization
109// c.) QA
110// NOTICE: Should be not used for the physic analysis
111// Function:
112// const AliExternalTrackParam *GetOuterParam() const { return fOp;}
113//
ae982df3 114//-----------------------------------------------------------------
115
e1e6896f 116#include <TMath.h>
49edfa08 117#include <TParticle.h>
ae982df3 118
49d13e89 119#include "AliESDVertex.h"
ae982df3 120#include "AliESDtrack.h"
121#include "AliKalmanTrack.h"
5f7789fc 122#include "AliLog.h"
15e85efa 123#include "AliTrackPointArray.h"
0c19adf7 124#include "TPolyMarker3D.h"
ae982df3 125
126ClassImp(AliESDtrack)
127
562dd0b4 128void SetPIDValues(Double_t * dest, const Double_t * src, Int_t n) {
d27bbc79 129 // This function copies "n" PID weights from "scr" to "dest"
130 // and normalizes their sum to 1 thus producing conditional probabilities.
131 // The negative weights are set to 0.
132 // In case all the weights are non-positive they are replaced by
133 // uniform probabilities
134
135 if (n<=0) return;
136
137 Float_t uniform = 1./(Float_t)n;
138
139 Float_t sum = 0;
140 for (Int_t i=0; i<n; i++)
141 if (src[i]>=0) {
142 sum+=src[i];
143 dest[i] = src[i];
144 }
145 else {
146 dest[i] = 0;
147 }
148
149 if(sum>0)
150 for (Int_t i=0; i<n; i++) dest[i] /= sum;
151 else
152 for (Int_t i=0; i<n; i++) dest[i] = uniform;
153}
154
ae982df3 155//_______________________________________________________________________
156AliESDtrack::AliESDtrack() :
c9ec41e8 157 AliExternalTrackParam(),
562dd0b4 158 fCp(0),
159 fIp(0),
160 fTPCInner(0),
161 fOp(0),
162 fFriendTrack(new AliESDfriendTrack()),
163 fTPCClusterMap(159),//number of padrows
164 fTPCSharedMap(159),//number of padrows
90e48c0c 165 fFlags(0),
90e48c0c 166 fID(0),
562dd0b4 167 fLabel(0),
168 fITSLabel(0),
169 fTPCLabel(0),
170 fTRDLabel(0),
171 fTOFCalChannel(0),
ce3f4882 172 fTOFindex(-1),
562dd0b4 173 fHMPIDqn(0),
174 fHMPIDcluIdx(0),
175 fEMCALindex(kEMCALNoMatch),
176 fHMPIDtrkTheta(0),
177 fHMPIDtrkPhi(0),
178 fHMPIDsignal(0),
90e48c0c 179 fTrackLength(0),
d7ddf1e9 180 fdTPC(0),fzTPC(0),
181 fCddTPC(0),fCdzTPC(0),fCzzTPC(0),
49d13e89 182 fD(0),fZ(0),
183 fCdd(0),fCdz(0),fCzz(0),
562dd0b4 184 fCchi2(0),
90e48c0c 185 fITSchi2(0),
90e48c0c 186 fTPCchi2(0),
562dd0b4 187 fTRDchi2(0),
188 fTOFchi2(0),
189 fHMPIDchi2(0),
190 fITSsignal(0),
90e48c0c 191 fTPCsignal(0),
e1d4c1b5 192 fTPCsignalS(0),
90e48c0c 193 fTRDsignal(0),
90e48c0c 194 fTRDQuality(0),
23d49657 195 fTRDBudget(0),
562dd0b4 196 fTOFsignal(0),
85324138 197 fTOFsignalToT(0),
d321691a 198 fTOFsignalRaw(0),
199 fTOFsignalDz(0),
562dd0b4 200 fHMPIDtrkX(0),
201 fHMPIDtrkY(0),
202 fHMPIDmipX(0),
203 fHMPIDmipY(0),
204 fTPCncls(0),
205 fTPCnclsF(0),
206 fTPCsignalN(0),
207 fITSncls(0),
208 fITSClusterMap(0),
209 fTRDncls(0),
210 fTRDncls0(0),
6984f7c1 211 fTRDpidQuality(0),
212 fTRDnSlices(0),
213 fTRDslices(0x0)
214
ae982df3 215{
216 //
217 // The default ESD constructor
218 //
6984f7c1 219 Int_t i;
6238d7a9 220 for (i=0; i<AliPID::kSPECIES; i++) {
4a78b8c5 221 fTrackTime[i]=0.;
562dd0b4 222 fR[i]=0.;
223 fITSr[i]=0.;
224 fTPCr[i]=0.;
225 fTRDr[i]=0.;
226 fTOFr[i]=0.;
227 fHMPIDr[i]=0.;
2bad268c 228 }
ac2f7574 229
ef7253ac 230 for (i=0; i<3; i++) { fKinkIndexes[i]=0;}
562dd0b4 231 for (i=0; i<3; i++) { fV0Indexes[i]=0;}
6984f7c1 232 for (i=0;i<kTRDnPlanes;i++) {
562dd0b4 233 fTRDTimBin[i]=0;
6d45eaef 234 }
562dd0b4 235 for (i=0;i<4;i++) {fTPCPoints[i]=0;}
236 for (i=0;i<3;i++) {fTOFLabel[i]=0;}
237 for (i=0;i<10;i++) {fTOFInfo[i]=0;}
89f1b176 238 for (i=0;i<12;i++) {fITSModule[i]=-1;}
c4d11b15 239}
240
241//_______________________________________________________________________
90e48c0c 242AliESDtrack::AliESDtrack(const AliESDtrack& track):
c9ec41e8 243 AliExternalTrackParam(track),
562dd0b4 244 fCp(0),
245 fIp(0),
246 fTPCInner(0),
247 fOp(0),
248 fFriendTrack(0),
249 fTPCClusterMap(track.fTPCClusterMap),
250 fTPCSharedMap(track.fTPCSharedMap),
90e48c0c 251 fFlags(track.fFlags),
90e48c0c 252 fID(track.fID),
562dd0b4 253 fLabel(track.fLabel),
254 fITSLabel(track.fITSLabel),
255 fTPCLabel(track.fTPCLabel),
256 fTRDLabel(track.fTRDLabel),
257 fTOFCalChannel(track.fTOFCalChannel),
258 fTOFindex(track.fTOFindex),
259 fHMPIDqn(track.fHMPIDqn),
260 fHMPIDcluIdx(track.fHMPIDcluIdx),
261 fEMCALindex(track.fEMCALindex),
262 fHMPIDtrkTheta(track.fHMPIDtrkTheta),
263 fHMPIDtrkPhi(track.fHMPIDtrkPhi),
264 fHMPIDsignal(track.fHMPIDsignal),
90e48c0c 265 fTrackLength(track.fTrackLength),
d7ddf1e9 266 fdTPC(track.fdTPC),fzTPC(track.fzTPC),
267 fCddTPC(track.fCddTPC),fCdzTPC(track.fCdzTPC),fCzzTPC(track.fCzzTPC),
49d13e89 268 fD(track.fD),fZ(track.fZ),
269 fCdd(track.fCdd),fCdz(track.fCdz),fCzz(track.fCzz),
90e48c0c 270 fCchi2(track.fCchi2),
90e48c0c 271 fITSchi2(track.fITSchi2),
90e48c0c 272 fTPCchi2(track.fTPCchi2),
562dd0b4 273 fTRDchi2(track.fTRDchi2),
274 fTOFchi2(track.fTOFchi2),
275 fHMPIDchi2(track.fHMPIDchi2),
276 fITSsignal(track.fITSsignal),
90e48c0c 277 fTPCsignal(track.fTPCsignal),
e1d4c1b5 278 fTPCsignalS(track.fTPCsignalS),
90e48c0c 279 fTRDsignal(track.fTRDsignal),
90e48c0c 280 fTRDQuality(track.fTRDQuality),
23d49657 281 fTRDBudget(track.fTRDBudget),
90e48c0c 282 fTOFsignal(track.fTOFsignal),
85324138 283 fTOFsignalToT(track.fTOFsignalToT),
d321691a 284 fTOFsignalRaw(track.fTOFsignalRaw),
285 fTOFsignalDz(track.fTOFsignalDz),
f4b3bbb7 286 fHMPIDtrkX(track.fHMPIDtrkX),
287 fHMPIDtrkY(track.fHMPIDtrkY),
288 fHMPIDmipX(track.fHMPIDmipX),
289 fHMPIDmipY(track.fHMPIDmipY),
562dd0b4 290 fTPCncls(track.fTPCncls),
291 fTPCnclsF(track.fTPCnclsF),
292 fTPCsignalN(track.fTPCsignalN),
293 fITSncls(track.fITSncls),
294 fITSClusterMap(track.fITSClusterMap),
295 fTRDncls(track.fTRDncls),
296 fTRDncls0(track.fTRDncls0),
6984f7c1 297 fTRDpidQuality(track.fTRDpidQuality),
298 fTRDnSlices(track.fTRDnSlices),
299 fTRDslices(0x0)
90e48c0c 300{
c4d11b15 301 //
302 //copy constructor
303 //
ef7253ac 304 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTrackTime[i]=track.fTrackTime[i];
305 for (Int_t i=0;i<AliPID::kSPECIES;i++) fR[i]=track.fR[i];
c4d11b15 306 //
304864ab 307 for (Int_t i=0;i<AliPID::kSPECIES;i++) fITSr[i]=track.fITSr[i];
c4d11b15 308 //
304864ab 309 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=track.fTPCr[i];
51ad6848 310 for (Int_t i=0;i<4;i++) {fTPCPoints[i]=track.fTPCPoints[i];}
311 for (Int_t i=0; i<3;i++) { fKinkIndexes[i]=track.fKinkIndexes[i];}
312 for (Int_t i=0; i<3;i++) { fV0Indexes[i]=track.fV0Indexes[i];}
c4d11b15 313 //
6984f7c1 314 for (Int_t i=0;i<kTRDnPlanes;i++) {
6d45eaef 315 fTRDTimBin[i]=track.fTRDTimBin[i];
eab5961e 316 }
6984f7c1 317
318 if (fTRDnSlices) {
319 fTRDslices=new Double32_t[fTRDnSlices];
320 for (Int_t i=0; i<fTRDnSlices; i++) fTRDslices[i]=track.fTRDslices[i];
321 }
322
304864ab 323 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTRDr[i]=track.fTRDr[i];
304864ab 324 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTOFr[i]=track.fTOFr[i];
51ad6848 325 for (Int_t i=0;i<3;i++) fTOFLabel[i]=track.fTOFLabel[i];
326 for (Int_t i=0;i<10;i++) fTOFInfo[i]=track.fTOFInfo[i];
89f1b176 327 for (Int_t i=0;i<12;i++) fITSModule[i]=track.fITSModule[i];
f4b3bbb7 328 for (Int_t i=0;i<AliPID::kSPECIES;i++) fHMPIDr[i]=track.fHMPIDr[i];
c9ec41e8 329
330 if (track.fCp) fCp=new AliExternalTrackParam(*track.fCp);
331 if (track.fIp) fIp=new AliExternalTrackParam(*track.fIp);
4aeb9470 332 if (track.fTPCInner) fTPCInner=new AliExternalTrackParam(*track.fTPCInner);
c9ec41e8 333 if (track.fOp) fOp=new AliExternalTrackParam(*track.fOp);
15e85efa 334
8497bca0 335 if (track.fFriendTrack) fFriendTrack=new AliESDfriendTrack(*(track.fFriendTrack));
ae982df3 336}
15e85efa 337
c4d11b15 338//_______________________________________________________________________
49edfa08 339AliESDtrack::AliESDtrack(TParticle * part) :
340 AliExternalTrackParam(),
562dd0b4 341 fCp(0),
342 fIp(0),
343 fTPCInner(0),
344 fOp(0),
345 fFriendTrack(0),
346 fTPCClusterMap(159),//number of padrows
347 fTPCSharedMap(159),//number of padrows
49edfa08 348 fFlags(0),
49edfa08 349 fID(0),
562dd0b4 350 fLabel(0),
351 fITSLabel(0),
352 fTPCLabel(0),
353 fTRDLabel(0),
354 fTOFCalChannel(0),
ce3f4882 355 fTOFindex(-1),
562dd0b4 356 fHMPIDqn(0),
357 fHMPIDcluIdx(0),
358 fEMCALindex(kEMCALNoMatch),
359 fHMPIDtrkTheta(0),
360 fHMPIDtrkPhi(0),
361 fHMPIDsignal(0),
49edfa08 362 fTrackLength(0),
d7ddf1e9 363 fdTPC(0),fzTPC(0),
364 fCddTPC(0),fCdzTPC(0),fCzzTPC(0),
49edfa08 365 fD(0),fZ(0),
366 fCdd(0),fCdz(0),fCzz(0),
562dd0b4 367 fCchi2(0),
49edfa08 368 fITSchi2(0),
49edfa08 369 fTPCchi2(0),
562dd0b4 370 fTRDchi2(0),
371 fTOFchi2(0),
372 fHMPIDchi2(0),
373 fITSsignal(0),
49edfa08 374 fTPCsignal(0),
49edfa08 375 fTPCsignalS(0),
49edfa08 376 fTRDsignal(0),
49edfa08 377 fTRDQuality(0),
378 fTRDBudget(0),
562dd0b4 379 fTOFsignal(0),
49edfa08 380 fTOFsignalToT(0),
d321691a 381 fTOFsignalRaw(0),
382 fTOFsignalDz(0),
562dd0b4 383 fHMPIDtrkX(0),
384 fHMPIDtrkY(0),
385 fHMPIDmipX(0),
386 fHMPIDmipY(0),
387 fTPCncls(0),
388 fTPCnclsF(0),
389 fTPCsignalN(0),
390 fITSncls(0),
391 fITSClusterMap(0),
392 fTRDncls(0),
393 fTRDncls0(0),
6984f7c1 394 fTRDpidQuality(0),
395 fTRDnSlices(0),
396 fTRDslices(0x0)
49edfa08 397{
398 //
399 // ESD track from TParticle
400 //
401
402 // Reset all the arrays
6984f7c1 403 Int_t i;
49edfa08 404 for (i=0; i<AliPID::kSPECIES; i++) {
405 fTrackTime[i]=0.;
406 fR[i]=0.;
407 fITSr[i]=0.;
408 fTPCr[i]=0.;
409 fTRDr[i]=0.;
410 fTOFr[i]=0.;
f4b3bbb7 411 fHMPIDr[i]=0.;
49edfa08 412 }
413
414 for (i=0; i<3; i++) { fKinkIndexes[i]=0;}
415 for (i=0; i<3; i++) { fV0Indexes[i]=-1;}
6984f7c1 416 for (i=0;i<kTRDnPlanes;i++) {
562dd0b4 417 fTRDTimBin[i]=0;
49edfa08 418 }
562dd0b4 419 for (i=0;i<4;i++) {fTPCPoints[i]=0;}
420 for (i=0;i<3;i++) {fTOFLabel[i]=0;}
421 for (i=0;i<10;i++) {fTOFInfo[i]=0;}
89f1b176 422 for (i=0;i<12;i++) {fITSModule[i]=-1;}
49edfa08 423
424 // Calculate the AliExternalTrackParam content
425
426 Double_t xref;
427 Double_t alpha;
428 Double_t param[5];
429 Double_t covar[15];
430
431 // Calculate alpha: the rotation angle of the corresponding local system (TPC sector)
432 alpha = part->Phi()*180./TMath::Pi();
433 if (alpha<0) alpha+= 360.;
434 if (alpha>360) alpha -= 360.;
435
436 Int_t sector = (Int_t)(alpha/20.);
437 alpha = 10. + 20.*sector;
438 alpha /= 180;
439 alpha *= TMath::Pi();
440
441 // Covariance matrix: no errors, the parameters are exact
6c27b212 442 for (i=0; i<15; i++) covar[i]=0.;
49edfa08 443
444 // Get the vertex of origin and the momentum
445 TVector3 ver(part->Vx(),part->Vy(),part->Vz());
446 TVector3 mom(part->Px(),part->Py(),part->Pz());
447
448 // Rotate to the local coordinate system (TPC sector)
449 ver.RotateZ(-alpha);
450 mom.RotateZ(-alpha);
451
452 // X of the referense plane
453 xref = ver.X();
454
455 Int_t pdgCode = part->GetPdgCode();
456
457 Double_t charge =
458 TDatabasePDG::Instance()->GetParticle(pdgCode)->Charge();
459
460 param[0] = ver.Y();
461 param[1] = ver.Z();
462 param[2] = TMath::Sin(mom.Phi());
463 param[3] = mom.Pz()/mom.Pt();
464 param[4] = TMath::Sign(1/mom.Pt(),charge);
465
466 // Set AliExternalTrackParam
467 Set(xref, alpha, param, covar);
468
469 // Set the PID
470 Int_t indexPID = 99;
471
472 switch (TMath::Abs(pdgCode)) {
473
474 case 11: // electron
475 indexPID = 0;
476 break;
477
478 case 13: // muon
479 indexPID = 1;
480 break;
481
482 case 211: // pion
483 indexPID = 2;
484 break;
485
486 case 321: // kaon
487 indexPID = 3;
488 break;
489
490 case 2212: // proton
491 indexPID = 4;
492 break;
493
494 default:
495 break;
496 }
497
498 // If the particle is not e,mu,pi,K or p the PID probabilities are set to 0
499 if (indexPID < AliPID::kSPECIES) {
500 fR[indexPID]=1.;
501 fITSr[indexPID]=1.;
502 fTPCr[indexPID]=1.;
503 fTRDr[indexPID]=1.;
504 fTOFr[indexPID]=1.;
f4b3bbb7 505 fHMPIDr[indexPID]=1.;
49edfa08 506
507 }
508 // AliESD track label
509 SetLabel(part->GetUniqueID());
510
511}
512
513//_______________________________________________________________________
c4d11b15 514AliESDtrack::~AliESDtrack(){
515 //
516 // This is destructor according Coding Conventrions
517 //
518 //printf("Delete track\n");
c9ec41e8 519 delete fIp;
4aeb9470 520 delete fTPCInner;
c9ec41e8 521 delete fOp;
522 delete fCp;
15e85efa 523 delete fFriendTrack;
6984f7c1 524 if(fTRDnSlices)
525 delete[] fTRDslices;
c4d11b15 526}
ae982df3 527
732a24fe 528AliESDtrack &AliESDtrack::operator=(const AliESDtrack &source){
529
530
531 if(&source == this) return *this;
532 AliExternalTrackParam::operator=(source);
533
534
535 if(source.fCp){
536 // we have the trackparam: assign or copy construct
537 if(fCp)*fCp = *source.fCp;
538 else fCp = new AliExternalTrackParam(*source.fCp);
539 }
540 else{
541 // no track param delete the old one
542 if(fCp)delete fCp;
543 fCp = 0;
544 }
545
546 if(source.fIp){
547 // we have the trackparam: assign or copy construct
548 if(fIp)*fIp = *source.fIp;
549 else fIp = new AliExternalTrackParam(*source.fIp);
550 }
551 else{
552 // no track param delete the old one
553 if(fIp)delete fIp;
554 fIp = 0;
555 }
556
557
558 if(source.fTPCInner){
559 // we have the trackparam: assign or copy construct
560 if(fTPCInner) *fTPCInner = *source.fTPCInner;
561 else fTPCInner = new AliExternalTrackParam(*source.fTPCInner);
562 }
563 else{
564 // no track param delete the old one
565 if(fTPCInner)delete fTPCInner;
566 fTPCInner = 0;
567 }
568
569
570 if(source.fOp){
571 // we have the trackparam: assign or copy construct
572 if(fOp) *fOp = *source.fOp;
573 else fOp = new AliExternalTrackParam(*source.fOp);
574 }
575 else{
576 // no track param delete the old one
577 if(fOp)delete fOp;
578 fOp = 0;
579 }
580
581 // copy also the friend track
582 // use copy constructor
583 if(source.fFriendTrack){
584 // we have the trackparam: assign or copy construct
585 delete fFriendTrack; fFriendTrack=new AliESDfriendTrack(*source.fFriendTrack);
586 }
587 else{
588 // no track param delete the old one
589 delete fFriendTrack; fFriendTrack= 0;
590 }
591
592 fTPCClusterMap = source.fTPCClusterMap;
593 fTPCSharedMap = source.fTPCSharedMap;
594 // the simple stuff
595 fFlags = source.fFlags;
596 fID = source.fID;
597 fLabel = source.fLabel;
598 fITSLabel = source.fITSLabel;
599 for(int i = 0; i< 12;++i){
600 fITSModule[i] = source.fITSModule[i];
601 }
602 fTPCLabel = source.fTPCLabel;
603 fTRDLabel = source.fTRDLabel;
604 for(int i = 0; i< 3;++i){
605 fTOFLabel[i] = source.fTOFLabel[i];
606 }
607 fTOFCalChannel = source.fTOFCalChannel;
608 fTOFindex = source.fTOFindex;
609 fHMPIDqn = source.fHMPIDqn;
610 fHMPIDcluIdx = source.fHMPIDcluIdx;
611 fEMCALindex = source.fEMCALindex;
612
613 for(int i = 0; i< 3;++i){
614 fKinkIndexes[i] = source.fKinkIndexes[i];
615 fV0Indexes[i] = source.fV0Indexes[i];
616 }
617
618 for(int i = 0; i< AliPID::kSPECIES;++i){
619 fR[i] = source.fR[i];
620 fITSr[i] = source.fITSr[i];
621 fTPCr[i] = source.fTPCr[i];
622 fTRDr[i] = source.fTRDr[i];
623 fTOFr[i] = source.fTOFr[i];
624 fHMPIDr[i] = source.fHMPIDr[i];
625 fTrackTime[i] = source.fTrackTime[i];
626 }
627
628 fHMPIDtrkTheta = source.fHMPIDtrkTheta;
629 fHMPIDtrkPhi = source.fHMPIDtrkPhi;
630 fHMPIDsignal = source.fHMPIDsignal;
631
632
633 fTrackLength = source. fTrackLength;
d7ddf1e9 634 fdTPC = source.fdTPC;
635 fzTPC = source.fzTPC;
636 fCddTPC = source.fCddTPC;
637 fCdzTPC = source.fCdzTPC;
638 fCzzTPC = source.fCzzTPC;
732a24fe 639 fD = source.fD;
640 fZ = source.fZ;
641 fCdd = source.fCdd;
642 fCdz = source.fCdz;
643 fCzz = source.fCzz;
644
645 fCchi2 = source.fCchi2;
646 fITSchi2 = source.fITSchi2;
647 fTPCchi2 = source.fTPCchi2;
648 fTRDchi2 = source.fTRDchi2;
649 fTOFchi2 = source.fTOFchi2;
650 fHMPIDchi2 = source.fHMPIDchi2;
651
652
653 fITSsignal = source.fITSsignal;
654 fTPCsignal = source.fTPCsignal;
655 fTPCsignalS = source.fTPCsignalS;
656 for(int i = 0; i< 4;++i){
657 fTPCPoints[i] = source.fTPCPoints[i];
658 }
659 fTRDsignal = source.fTRDsignal;
660
6984f7c1 661 for(int i = 0;i < kTRDnPlanes;++i){
732a24fe 662 fTRDTimBin[i] = source.fTRDTimBin[i];
732a24fe 663 }
6984f7c1 664
665 if(fTRDnSlices)
666 delete[] fTRDslices;
667 fTRDslices=0;
668 fTRDnSlices=source.fTRDnSlices;
669 if (fTRDnSlices) {
670 fTRDslices=new Double32_t[fTRDnSlices];
671 for(int j = 0;j < fTRDnSlices;++j) fTRDslices[j] = source.fTRDslices[j];
672 }
673
732a24fe 674 fTRDQuality = source.fTRDQuality;
675 fTRDBudget = source.fTRDBudget;
676 fTOFsignal = source.fTOFsignal;
677 fTOFsignalToT = source.fTOFsignalToT;
678 fTOFsignalRaw = source.fTOFsignalRaw;
679 fTOFsignalDz = source.fTOFsignalDz;
680
681 for(int i = 0;i<10;++i){
682 fTOFInfo[i] = source.fTOFInfo[i];
683 }
684
685 fHMPIDtrkX = source.fHMPIDtrkX;
686 fHMPIDtrkY = source.fHMPIDtrkY;
687 fHMPIDmipX = source.fHMPIDmipX;
688 fHMPIDmipY = source.fHMPIDmipY;
689
690 fTPCncls = source.fTPCncls;
691 fTPCnclsF = source.fTPCnclsF;
692 fTPCsignalN = source.fTPCsignalN;
693
694 fITSncls = source.fITSncls;
695 fITSClusterMap = source.fITSClusterMap;
696 fTRDncls = source.fTRDncls;
697 fTRDncls0 = source.fTRDncls0;
698 fTRDpidQuality = source.fTRDpidQuality;
699 return *this;
700}
701
702
703
704void AliESDtrack::Copy(TObject &obj) const {
705
706 // this overwrites the virtual TOBject::Copy()
707 // to allow run time copying without casting
708 // in AliESDEvent
709
710 if(this==&obj)return;
711 AliESDtrack *robj = dynamic_cast<AliESDtrack*>(&obj);
712 if(!robj)return; // not an AliESDtrack
713 *robj = *this;
714
715}
716
717
718
00dce61a 719void AliESDtrack::AddCalibObject(TObject * object){
720 //
721 // add calib object to the list
722 //
723 if (!fFriendTrack) fFriendTrack = new AliESDfriendTrack;
724 fFriendTrack->AddCalibObject(object);
725}
726
727TObject * AliESDtrack::GetCalibObject(Int_t index){
728 //
729 // return calib objct at given position
730 //
731 if (!fFriendTrack) return 0;
732 return fFriendTrack->GetCalibObject(index);
733}
734
735
b9ca886f 736const Bool_t AliESDtrack::FillTPCOnlyTrack(AliESDtrack &track){
737
738 // Fills the information of the TPC-only first reconstruction pass
739 // into the passed ESDtrack object. For consistency fTPCInner is also filled
740 // again
741
5b305f70 742
743
744 // For data produced before r26675
745 // RelateToVertexTPC was not properly called during reco
746 // so you'll have to call it again, before FillTPCOnlyTrack
747 // Float_t p[2],cov[3];
748 // track->GetImpactParametersTPC(p,cov);
749 // if(p[0]==0&&p[1]==0) // <- Default values
750 // track->RelateToVertexTPC(esd->GetPrimaryVertexTPC(),esd->GetMagneticField(),kVeryBig);
751
752
b9ca886f 753 if(!fTPCInner)return kFALSE;
754
755 // fill the TPC track params to the global track parameters
756 track.Set(fTPCInner->GetX(),fTPCInner->GetAlpha(),fTPCInner->GetParameter(),fTPCInner->GetCovariance());
757 track.fD = fdTPC;
758 track.fZ = fzTPC;
759 track.fCdd = fCddTPC;
760 track.fCdz = fCdzTPC;
761 track.fCzz = fCzzTPC;
762
763 // copy the TPCinner parameters
764 if(track.fTPCInner) *track.fTPCInner = *fTPCInner;
765 else track.fTPCInner = new AliExternalTrackParam(*fTPCInner);
766 track.fdTPC = fdTPC;
767 track.fzTPC = fzTPC;
768 track.fCddTPC = fCddTPC;
769 track.fCdzTPC = fCdzTPC;
770 track.fCzzTPC = fCzzTPC;
771
772
773 // copy all other TPC specific parameters
774
775 // replace label by TPC label
776 track.fLabel = fTPCLabel;
777 track.fTPCLabel = fTPCLabel;
778
779 track.fTPCchi2 = fTPCchi2;
780 track.fTPCsignal = fTPCsignal;
781 track.fTPCsignalS = fTPCsignalS;
782 for(int i = 0;i<4;++i)track.fTPCPoints[i] = fTPCPoints[i];
783
784 track.fTPCncls = fTPCncls;
785 track.fTPCnclsF = fTPCnclsF;
786 track.fTPCsignalN = fTPCsignalN;
787
788 // PID
789 for(int i=0;i<AliPID::kSPECIES;++i){
790 track.fTPCr[i] = fTPCr[i];
791 // combined PID is TPC only!
792 track.fR[i] = fTPCr[i];
793 }
794 track.fTPCClusterMap = fTPCClusterMap;
795 track.fTPCSharedMap = fTPCSharedMap;
796
797
798 // reset the flags
799 track.fFlags = kTPCin;
800 track.fID = fID;
801
802
803 for (Int_t i=0;i<3;i++) track.fKinkIndexes[i] = fKinkIndexes[i];
804
805 return kTRUE;
806
807}
808
ae982df3 809//_______________________________________________________________________
9559cbc4 810void AliESDtrack::MakeMiniESDtrack(){
811 // Resets everything except
812 // fFlags: Reconstruction status flags
813 // fLabel: Track label
814 // fID: Unique ID of the track
d7ddf1e9 815 // Impact parameter information
9559cbc4 816 // fR[AliPID::kSPECIES]: combined "detector response probability"
8497bca0 817 // Running track parameters in the base class (AliExternalTrackParam)
9559cbc4 818
819 fTrackLength = 0;
562dd0b4 820
9559cbc4 821 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTrackTime[i] = 0;
9559cbc4 822
823 // Reset track parameters constrained to the primary vertex
562dd0b4 824 delete fCp;fCp = 0;
9559cbc4 825 fCchi2 = 0;
826
827 // Reset track parameters at the inner wall of TPC
562dd0b4 828 delete fIp;fIp = 0;
829 delete fTPCInner;fTPCInner=0;
9559cbc4 830 // Reset track parameters at the inner wall of the TRD
562dd0b4 831 delete fOp;fOp = 0;
832
9559cbc4 833
834 // Reset ITS track related information
835 fITSchi2 = 0;
9559cbc4 836 fITSncls = 0;
62665e7f 837 fITSClusterMap=0;
9559cbc4 838 fITSsignal = 0;
ef7253ac 839 for (Int_t i=0;i<AliPID::kSPECIES;i++) fITSr[i]=0;
9559cbc4 840 fITSLabel = 0;
9559cbc4 841
842 // Reset TPC related track information
843 fTPCchi2 = 0;
844 fTPCncls = 0;
e1d4c1b5 845 fTPCnclsF = 0;
9559cbc4 846 fTPCClusterMap = 0;
eb7f6854 847 fTPCSharedMap = 0;
9559cbc4 848 fTPCsignal= 0;
e1d4c1b5 849 fTPCsignalS= 0;
850 fTPCsignalN= 0;
9559cbc4 851 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=0;
852 fTPCLabel=0;
853 for (Int_t i=0;i<4;i++) fTPCPoints[i] = 0;
854 for (Int_t i=0; i<3;i++) fKinkIndexes[i] = 0;
855 for (Int_t i=0; i<3;i++) fV0Indexes[i] = 0;
856
857 // Reset TRD related track information
858 fTRDchi2 = 0;
859 fTRDncls = 0;
860 fTRDncls0 = 0;
9559cbc4 861 fTRDsignal = 0;
6984f7c1 862 for (Int_t i=0;i<kTRDnPlanes;i++) {
6d45eaef 863 fTRDTimBin[i] = 0;
9559cbc4 864 }
865 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTRDr[i] = 0;
866 fTRDLabel = 0;
9559cbc4 867 fTRDQuality = 0;
562dd0b4 868 fTRDpidQuality = 0;
6984f7c1 869 if(fTRDnSlices)
870 delete[] fTRDslices;
871 fTRDslices=0x0;
872 fTRDnSlices=0;
23d49657 873 fTRDBudget = 0;
9559cbc4 874
875 // Reset TOF related track information
876 fTOFchi2 = 0;
ce3f4882 877 fTOFindex = -1;
9559cbc4 878 fTOFsignal = 0;
562dd0b4 879 fTOFCalChannel = 0;
85324138 880 fTOFsignalToT = 0;
d321691a 881 fTOFsignalRaw = 0;
882 fTOFsignalDz = 0;
9559cbc4 883 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTOFr[i] = 0;
884 for (Int_t i=0;i<3;i++) fTOFLabel[i] = 0;
885 for (Int_t i=0;i<10;i++) fTOFInfo[i] = 0;
886
f4b3bbb7 887 // Reset HMPID related track information
888 fHMPIDchi2 = 0;
562dd0b4 889 fHMPIDqn = 0;
890 fHMPIDcluIdx = 0;
f4b3bbb7 891 fHMPIDsignal = 0;
892 for (Int_t i=0;i<AliPID::kSPECIES;i++) fHMPIDr[i] = 0;
562dd0b4 893 fHMPIDtrkTheta = 0;
894 fHMPIDtrkPhi = 0;
895 fHMPIDtrkX = 0;
896 fHMPIDtrkY = 0;
897 fHMPIDmipX = 0;
898 fHMPIDmipY = 0;
2e1dcd14 899 fEMCALindex = kEMCALNoMatch;
9559cbc4 900
15e85efa 901 delete fFriendTrack; fFriendTrack = 0;
9559cbc4 902}
903//_______________________________________________________________________
4a78b8c5 904Double_t AliESDtrack::GetMass() const {
4427806c 905 // Returns the mass of the most probable particle type
ae982df3 906 Float_t max=0.;
907 Int_t k=-1;
304864ab 908 for (Int_t i=0; i<AliPID::kSPECIES; i++) {
ae982df3 909 if (fR[i]>max) {k=i; max=fR[i];}
910 }
db3989b3 911 if (k==0) { // dE/dx "crossing points" in the TPC
912 Double_t p=GetP();
913 if ((p>0.38)&&(p<0.48))
304864ab 914 if (fR[0]<fR[3]*10.) return AliPID::ParticleMass(AliPID::kKaon);
db3989b3 915 if ((p>0.75)&&(p<0.85))
304864ab 916 if (fR[0]<fR[4]*10.) return AliPID::ParticleMass(AliPID::kProton);
db3989b3 917 return 0.00051;
918 }
304864ab 919 if (k==1) return AliPID::ParticleMass(AliPID::kMuon);
920 if (k==2||k==-1) return AliPID::ParticleMass(AliPID::kPion);
921 if (k==3) return AliPID::ParticleMass(AliPID::kKaon);
922 if (k==4) return AliPID::ParticleMass(AliPID::kProton);
5f7789fc 923 AliWarning("Undefined mass !");
304864ab 924 return AliPID::ParticleMass(AliPID::kPion);
ae982df3 925}
926
aad8d435 927//______________________________________________________________________________
928Double_t AliESDtrack::E() const
929{
930 // Returns the energy of the particle given its assumed mass.
931 // Assumes the pion mass if the particle can't be identified properly.
932
933 Double_t m = M();
934 Double_t p = P();
935 return TMath::Sqrt(p*p + m*m);
936}
937
938//______________________________________________________________________________
939Double_t AliESDtrack::Y() const
940{
941 // Returns the rapidity of a particle given its assumed mass.
942 // Assumes the pion mass if the particle can't be identified properly.
943
944 Double_t e = E();
945 Double_t pz = Pz();
e03e4544 946 if (e != TMath::Abs(pz)) { // energy was not equal to pz
aad8d435 947 return 0.5*TMath::Log((e+pz)/(e-pz));
948 } else { // energy was equal to pz
949 return -999.;
950 }
951}
952
ae982df3 953//_______________________________________________________________________
c9ec41e8 954Bool_t AliESDtrack::UpdateTrackParams(const AliKalmanTrack *t, ULong_t flags){
ae982df3 955 //
956 // This function updates track's running parameters
957 //
15e85efa 958 Int_t *index=0;
15614b8b 959 Bool_t rc=kTRUE;
960
9b859005 961 SetStatus(flags);
962 fLabel=t->GetLabel();
963
964 if (t->IsStartedTimeIntegral()) {
965 SetStatus(kTIME);
966 Double_t times[10];t->GetIntegratedTimes(times); SetIntegratedTimes(times);
967 SetIntegratedLength(t->GetIntegratedLength());
968 }
969
6c94f330 970 Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
e1d4c1b5 971
ae982df3 972 switch (flags) {
ad2f1f2b 973
9b859005 974 case kITSin: case kITSout: case kITSrefit:
48704648 975 fITSClusterMap=0;
ae982df3 976 fITSncls=t->GetNumberOfClusters();
62665e7f 977 index=fFriendTrack->GetITSindices();
978 for (Int_t i=0;i<AliESDfriendTrack::kMaxITScluster;i++) {
979 index[i]=t->GetClusterIndex(i);
980 if (i<fITSncls) {
981 Int_t l=(index[i] & 0xf0000000) >> 28;
982 SETBIT(fITSClusterMap,l);
983 }
984 }
ae982df3 985 fITSchi2=t->GetChi2();
ae982df3 986 fITSsignal=t->GetPIDsignal();
6e5b1b04 987 fITSLabel = t->GetLabel();
57483eb1 988 // keep in fOp the parameters outside ITS for ITS stand-alone tracks
989 if (flags==kITSout) {
990 if (!fOp) fOp=new AliExternalTrackParam(*t);
991 else
992 fOp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
993 }
ae982df3 994 break;
ad2f1f2b 995
9b859005 996 case kTPCin: case kTPCrefit:
6e5b1b04 997 fTPCLabel = t->GetLabel();
4aeb9470 998 if (flags==kTPCin) fTPCInner=new AliExternalTrackParam(*t);
c9ec41e8 999 if (!fIp) fIp=new AliExternalTrackParam(*t);
6c94f330 1000 else
1001 fIp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
9b859005 1002 case kTPCout:
15e85efa 1003 index=fFriendTrack->GetTPCindices();
1d303a24 1004 if (flags & kTPCout){
1005 if (!fOp) fOp=new AliExternalTrackParam(*t);
6c94f330 1006 else
1007 fOp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
1d303a24 1008 }
e1d4c1b5 1009 fTPCncls=t->GetNumberOfClusters();
ae982df3 1010 fTPCchi2=t->GetChi2();
a866ac60 1011
1012 {//prevrow must be declared in separate namespace, otherwise compiler cries:
1013 //"jump to case label crosses initialization of `Int_t prevrow'"
1014 Int_t prevrow = -1;
6e5b1b04 1015 // for (Int_t i=0;i<fTPCncls;i++)
15e85efa 1016 for (Int_t i=0;i<AliESDfriendTrack::kMaxTPCcluster;i++)
a866ac60 1017 {
15e85efa 1018 index[i]=t->GetClusterIndex(i);
1019 Int_t idx = index[i];
a866ac60 1020
15e85efa 1021 if (idx<0) continue;
9fe5b2ff 1022
a866ac60 1023 // Piotr's Cluster Map for HBT
1024 // ### please change accordingly if cluster array is changing
1025 // to "New TPC Tracking" style (with gaps in array)
a866ac60 1026 Int_t sect = (idx&0xff000000)>>24;
1027 Int_t row = (idx&0x00ff0000)>>16;
1028 if (sect > 18) row +=63; //if it is outer sector, add number of inner sectors
1029
1030 fTPCClusterMap.SetBitNumber(row,kTRUE);
1031
1032 //Fill the gap between previous row and this row with 0 bits
1033 //In case ### pleas change it as well - just set bit 0 in case there
1034 //is no associated clusters for current "i"
1035 if (prevrow < 0)
1036 {
1037 prevrow = row;//if previous bit was not assigned yet == this is the first one
1038 }
1039 else
1040 { //we don't know the order (inner to outer or reverse)
1041 //just to be save in case it is going to change
1042 Int_t n = 0, m = 0;
1043 if (prevrow < row)
1044 {
1045 n = prevrow;
1046 m = row;
1047 }
1048 else
1049 {
1050 n = row;
1051 m = prevrow;
1052 }
1053
1054 for (Int_t j = n+1; j < m; j++)
1055 {
1056 fTPCClusterMap.SetBitNumber(j,kFALSE);
1057 }
1058 prevrow = row;
1059 }
1060 // End Of Piotr's Cluster Map for HBT
1061 }
1062 }
ae982df3 1063 fTPCsignal=t->GetPIDsignal();
ae982df3 1064 break;
9b859005 1065
23904d16 1066 case kTRDout: case kTRDin: case kTRDrefit:
2f83b7a6 1067 index = fFriendTrack->GetTRDindices();
51ad6848 1068 fTRDLabel = t->GetLabel();
2f83b7a6 1069 fTRDchi2 = t->GetChi2();
1070 fTRDncls = t->GetNumberOfClusters();
5bc3e158 1071 for (Int_t i=0;i<6;i++) index[i]=t->GetTrackletIndex(i);
1072
79e94bf8 1073 fTRDsignal=t->GetPIDsignal();
1074 break;
c4d11b15 1075 case kTRDbackup:
c9ec41e8 1076 if (!fOp) fOp=new AliExternalTrackParam(*t);
6c94f330 1077 else
1078 fOp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
c4d11b15 1079 fTRDncls0 = t->GetNumberOfClusters();
1080 break;
1081 case kTOFin:
1082 break;
1083 case kTOFout:
1084 break;
d0862fea 1085 case kTRDStop:
1086 break;
ae982df3 1087 default:
5f7789fc 1088 AliError("Wrong flag !");
ae982df3 1089 return kFALSE;
1090 }
1091
15614b8b 1092 return rc;
ae982df3 1093}
1094
1095//_______________________________________________________________________
1096void AliESDtrack::GetExternalParameters(Double_t &x, Double_t p[5]) const {
1097 //---------------------------------------------------------------------
1098 // This function returns external representation of the track parameters
1099 //---------------------------------------------------------------------
c9ec41e8 1100 x=GetX();
1101 for (Int_t i=0; i<5; i++) p[i]=GetParameter()[i];
15614b8b 1102}
1103
67c3dcbe 1104//_______________________________________________________________________
a866ac60 1105void AliESDtrack::GetExternalCovariance(Double_t cov[15]) const {
67c3dcbe 1106 //---------------------------------------------------------------------
1107 // This function returns external representation of the cov. matrix
1108 //---------------------------------------------------------------------
c9ec41e8 1109 for (Int_t i=0; i<15; i++) cov[i]=AliExternalTrackParam::GetCovariance()[i];
67c3dcbe 1110}
1111
67c3dcbe 1112//_______________________________________________________________________
c0b978f0 1113Bool_t AliESDtrack::GetConstrainedExternalParameters
1114 (Double_t &alpha, Double_t &x, Double_t p[5]) const {
67c3dcbe 1115 //---------------------------------------------------------------------
1116 // This function returns the constrained external track parameters
1117 //---------------------------------------------------------------------
c0b978f0 1118 if (!fCp) return kFALSE;
1119 alpha=fCp->GetAlpha();
c9ec41e8 1120 x=fCp->GetX();
1121 for (Int_t i=0; i<5; i++) p[i]=fCp->GetParameter()[i];
c0b978f0 1122 return kTRUE;
67c3dcbe 1123}
c9ec41e8 1124
67c3dcbe 1125//_______________________________________________________________________
c0b978f0 1126Bool_t
67c3dcbe 1127AliESDtrack::GetConstrainedExternalCovariance(Double_t c[15]) const {
1128 //---------------------------------------------------------------------
1129 // This function returns the constrained external cov. matrix
1130 //---------------------------------------------------------------------
c0b978f0 1131 if (!fCp) return kFALSE;
c9ec41e8 1132 for (Int_t i=0; i<15; i++) c[i]=fCp->GetCovariance()[i];
c0b978f0 1133 return kTRUE;
67c3dcbe 1134}
1135
c0b978f0 1136Bool_t
1137AliESDtrack::GetInnerExternalParameters
1138 (Double_t &alpha, Double_t &x, Double_t p[5]) const {
1139 //---------------------------------------------------------------------
c9ec41e8 1140 // This function returns external representation of the track parameters
1141 // at the inner layer of TPC
9b859005 1142 //---------------------------------------------------------------------
c0b978f0 1143 if (!fIp) return kFALSE;
1144 alpha=fIp->GetAlpha();
c9ec41e8 1145 x=fIp->GetX();
1146 for (Int_t i=0; i<5; i++) p[i]=fIp->GetParameter()[i];
c0b978f0 1147 return kTRUE;
9b859005 1148}
1149
c0b978f0 1150Bool_t
1151AliESDtrack::GetInnerExternalCovariance(Double_t cov[15]) const {
c9ec41e8 1152 //---------------------------------------------------------------------
1153 // This function returns external representation of the cov. matrix
1154 // at the inner layer of TPC
1155 //---------------------------------------------------------------------
c0b978f0 1156 if (!fIp) return kFALSE;
c9ec41e8 1157 for (Int_t i=0; i<15; i++) cov[i]=fIp->GetCovariance()[i];
c0b978f0 1158 return kTRUE;
9b859005 1159}
1160
d61ca12d 1161void
1162AliESDtrack::SetOuterParam(const AliExternalTrackParam *p, ULong_t flags) {
1163 //
1164 // This is a direct setter for the outer track parameters
1165 //
1166 SetStatus(flags);
1167 if (fOp) delete fOp;
1168 fOp=new AliExternalTrackParam(*p);
1169}
1170
c0b978f0 1171Bool_t
1172AliESDtrack::GetOuterExternalParameters
1173 (Double_t &alpha, Double_t &x, Double_t p[5]) const {
1174 //---------------------------------------------------------------------
c9ec41e8 1175 // This function returns external representation of the track parameters
1176 // at the inner layer of TRD
a866ac60 1177 //---------------------------------------------------------------------
c0b978f0 1178 if (!fOp) return kFALSE;
1179 alpha=fOp->GetAlpha();
c9ec41e8 1180 x=fOp->GetX();
1181 for (Int_t i=0; i<5; i++) p[i]=fOp->GetParameter()[i];
c0b978f0 1182 return kTRUE;
a866ac60 1183}
c9ec41e8 1184
c0b978f0 1185Bool_t
1186AliESDtrack::GetOuterExternalCovariance(Double_t cov[15]) const {
a866ac60 1187 //---------------------------------------------------------------------
c9ec41e8 1188 // This function returns external representation of the cov. matrix
1189 // at the inner layer of TRD
a866ac60 1190 //---------------------------------------------------------------------
c0b978f0 1191 if (!fOp) return kFALSE;
c9ec41e8 1192 for (Int_t i=0; i<15; i++) cov[i]=fOp->GetCovariance()[i];
c0b978f0 1193 return kTRUE;
a866ac60 1194}
1195
98937d93 1196Int_t AliESDtrack::GetNcls(Int_t idet) const
1197{
1198 // Get number of clusters by subdetector index
1199 //
1200 Int_t ncls = 0;
1201 switch(idet){
1202 case 0:
1203 ncls = fITSncls;
1204 break;
1205 case 1:
1206 ncls = fTPCncls;
1207 break;
1208 case 2:
1209 ncls = fTRDncls;
1210 break;
1211 case 3:
ce3f4882 1212 if (fTOFindex != -1)
98937d93 1213 ncls = 1;
1214 break;
1215 default:
1216 break;
1217 }
1218 return ncls;
1219}
1220
ef7253ac 1221Int_t AliESDtrack::GetClusters(Int_t idet, Int_t *idx) const
98937d93 1222{
1223 // Get cluster index array by subdetector index
1224 //
1225 Int_t ncls = 0;
1226 switch(idet){
1227 case 0:
1228 ncls = GetITSclusters(idx);
1229 break;
1230 case 1:
ef7253ac 1231 ncls = GetTPCclusters(idx);
98937d93 1232 break;
1233 case 2:
1234 ncls = GetTRDclusters(idx);
1235 break;
1236 case 3:
ce3f4882 1237 if (fTOFindex != -1) {
1238 idx[0] = fTOFindex;
98937d93 1239 ncls = 1;
1240 }
1241 break;
313af949 1242 case 4: //PHOS
1243 break;
1244 case 5:
1245 if (fHMPIDcluIdx != 0) {
1246 idx[0] = GetHMPIDcluIdx();
1247 ncls = 1;
1248 }
1249 break;
1250 case 6: //EMCAL
1251 break;
98937d93 1252 default:
1253 break;
1254 }
1255 return ncls;
1256}
1257
ae982df3 1258//_______________________________________________________________________
ae982df3 1259void AliESDtrack::GetIntegratedTimes(Double_t *times) const {
4427806c 1260 // Returns the array with integrated times for each particle hypothesis
304864ab 1261 for (Int_t i=0; i<AliPID::kSPECIES; i++) times[i]=fTrackTime[i];
ae982df3 1262}
1263
1264//_______________________________________________________________________
1265void AliESDtrack::SetIntegratedTimes(const Double_t *times) {
4427806c 1266 // Sets the array with integrated times for each particle hypotesis
304864ab 1267 for (Int_t i=0; i<AliPID::kSPECIES; i++) fTrackTime[i]=times[i];
ae982df3 1268}
1269
1270//_______________________________________________________________________
4427806c 1271void AliESDtrack::SetITSpid(const Double_t *p) {
1272 // Sets values for the probability of each particle type (in ITS)
d27bbc79 1273 SetPIDValues(fITSr,p,AliPID::kSPECIES);
c630aafd 1274 SetStatus(AliESDtrack::kITSpid);
1275}
1276
1277//_______________________________________________________________________
1278void AliESDtrack::GetITSpid(Double_t *p) const {
4427806c 1279 // Gets the probability of each particle type (in ITS)
304864ab 1280 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fITSr[i];
c630aafd 1281}
1282
1283//_______________________________________________________________________
562dd0b4 1284Char_t AliESDtrack::GetITSclusters(Int_t *idx) const {
ae982df3 1285 //---------------------------------------------------------------------
1286 // This function returns indices of the assgined ITS clusters
1287 //---------------------------------------------------------------------
15e85efa 1288 if (idx!=0) {
1289 Int_t *index=fFriendTrack->GetITSindices();
dbfebd7d 1290 for (Int_t i=0; i<AliESDfriendTrack::kMaxITScluster; i++) {
1291 if ( (i>=fITSncls) && (i<6) ) idx[i]=-1;
1292 else idx[i]=index[i];
1293 }
15e85efa 1294 }
ae982df3 1295 return fITSncls;
1296}
1297
1298//_______________________________________________________________________
89f1b176 1299Bool_t AliESDtrack::GetITSModuleIndexInfo(Int_t ilayer,Int_t &idet,Int_t &status,
1300 Float_t &xloc,Float_t &zloc) const {
1301 //----------------------------------------------------------------------
1302 // This function encodes in the module number also the status of cluster association
1303 // "status" can have the following values:
1304 // 1 "found" (cluster is associated),
1305 // 2 "dead" (module is dead from OCDB),
1306 // 3 "skipped" (module or layer forced to be skipped),
1307 // 4 "outinz" (track out of z acceptance),
1308 // 5 "nocls" (no clusters in the road),
1309 // 6 "norefit" (cluster rejected during refit),
1310 // 7 "deadzspd" (holes in z in SPD)
1311 // Also given are the coordinates of the crossing point of track and module
1312 // (in the local module ref. system)
1313 // WARNING: THIS METHOD HAS TO BE SYNCHRONIZED WITH AliITStrackV2::GetModuleIndexInfo()!
1314 //----------------------------------------------------------------------
1315
1316 if(fITSModule[ilayer]==-1) {
89f1b176 1317 idet = -1;
1318 status=0;
1319 xloc=-99.; zloc=-99.;
1320 return kFALSE;
1321 }
1322
1323 Int_t module = fITSModule[ilayer];
1324
1325 idet = Int_t(module/1000000);
1326
1327 module -= idet*1000000;
1328
1329 status = Int_t(module/100000);
1330
1331 module -= status*100000;
1332
1333 Int_t signs = Int_t(module/10000);
1334
1335 module-=signs*10000;
1336
1337 Int_t xInt = Int_t(module/100);
1338 module -= xInt*100;
1339
1340 Int_t zInt = module;
1341
1342 if(signs==1) { xInt*=1; zInt*=1; }
1343 if(signs==2) { xInt*=1; zInt*=-1; }
1344 if(signs==3) { xInt*=-1; zInt*=1; }
1345 if(signs==4) { xInt*=-1; zInt*=-1; }
1346
1347 xloc = 0.1*(Float_t)xInt;
1348 zloc = 0.1*(Float_t)zInt;
1349
1350 if(status==4) idet = -1;
1351
1352 return kTRUE;
1353}
1354
1355//_______________________________________________________________________
562dd0b4 1356UShort_t AliESDtrack::GetTPCclusters(Int_t *idx) const {
ae982df3 1357 //---------------------------------------------------------------------
1358 // This function returns indices of the assgined ITS clusters
1359 //---------------------------------------------------------------------
15e85efa 1360 if (idx!=0) {
1361 Int_t *index=fFriendTrack->GetTPCindices();
1362 for (Int_t i=0; i<AliESDfriendTrack::kMaxTPCcluster; i++) idx[i]=index[i];
1363 }
ae982df3 1364 return fTPCncls;
1365}
8c6a71ab 1366
562dd0b4 1367Double_t AliESDtrack::GetTPCdensity(Int_t row0, Int_t row1) const{
81e97e0d 1368 //
1369 // GetDensity of the clusters on given region between row0 and row1
1370 // Dead zone effect takin into acoount
1371 //
1372 Int_t good = 0;
1373 Int_t found = 0;
1374 //
15e85efa 1375 Int_t *index=fFriendTrack->GetTPCindices();
81e97e0d 1376 for (Int_t i=row0;i<=row1;i++){
15e85efa 1377 Int_t idx = index[i];
1378 if (idx!=-1) good++; // track outside of dead zone
1379 if (idx>0) found++;
81e97e0d 1380 }
1381 Float_t density=0.5;
1382 if (good>(row1-row0)*0.5) density = Float_t(found)/Float_t(good);
1383 return density;
1384}
c84a5e9e 1385
8c6a71ab 1386//_______________________________________________________________________
1387void AliESDtrack::SetTPCpid(const Double_t *p) {
4427806c 1388 // Sets values for the probability of each particle type (in TPC)
d27bbc79 1389 SetPIDValues(fTPCr,p,AliPID::kSPECIES);
8c6a71ab 1390 SetStatus(AliESDtrack::kTPCpid);
1391}
1392
1393//_______________________________________________________________________
1394void AliESDtrack::GetTPCpid(Double_t *p) const {
4427806c 1395 // Gets the probability of each particle type (in TPC)
304864ab 1396 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fTPCr[i];
8c6a71ab 1397}
1398
1399//_______________________________________________________________________
562dd0b4 1400UChar_t AliESDtrack::GetTRDclusters(Int_t *idx) const {
bb2ceb1f 1401 //---------------------------------------------------------------------
1402 // This function returns indices of the assgined TRD clusters
1403 //---------------------------------------------------------------------
15e85efa 1404 if (idx!=0) {
1405 Int_t *index=fFriendTrack->GetTRDindices();
1406 for (Int_t i=0; i<AliESDfriendTrack::kMaxTRDcluster; i++) idx[i]=index[i];
1407 }
bb2ceb1f 1408 return fTRDncls;
1409}
1410
1411//_______________________________________________________________________
5bc3e158 1412UChar_t AliESDtrack::GetTRDtracklets(Int_t *idx) const {
1413 //---------------------------------------------------------------------
1414 // This function returns indices of the assigned TRD tracklets
1415 //---------------------------------------------------------------------
1416 if (idx!=0) {
1417 Int_t *index=fFriendTrack->GetTRDindices();
1418 for (Int_t i=0; i<6/*AliESDfriendTrack::kMaxTRDcluster*/; i++) idx[i]=index[i];
1419 }
1420 return fTRDncls;
1421}
1422
1423//_______________________________________________________________________
c630aafd 1424void AliESDtrack::SetTRDpid(const Double_t *p) {
4427806c 1425 // Sets values for the probability of each particle type (in TRD)
d27bbc79 1426 SetPIDValues(fTRDr,p,AliPID::kSPECIES);
c630aafd 1427 SetStatus(AliESDtrack::kTRDpid);
1428}
1429
1430//_______________________________________________________________________
1431void AliESDtrack::GetTRDpid(Double_t *p) const {
4427806c 1432 // Gets the probability of each particle type (in TRD)
304864ab 1433 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fTRDr[i];
c630aafd 1434}
1435
1436//_______________________________________________________________________
79e94bf8 1437void AliESDtrack::SetTRDpid(Int_t iSpecies, Float_t p)
1438{
4427806c 1439 // Sets the probability of particle type iSpecies to p (in TRD)
79e94bf8 1440 fTRDr[iSpecies] = p;
1441}
1442
562dd0b4 1443Double_t AliESDtrack::GetTRDpid(Int_t iSpecies) const
79e94bf8 1444{
4427806c 1445 // Returns the probability of particle type iSpecies (in TRD)
79e94bf8 1446 return fTRDr[iSpecies];
1447}
1448
6984f7c1 1449void AliESDtrack::SetNumberOfTRDslices(Int_t n) {
1450 //Sets the number of slices used for PID
1451 if (fTRDnSlices != 0) return;
1452 fTRDnSlices=kTRDnPlanes*n;
1453 fTRDslices=new Double32_t[fTRDnSlices];
1454 for (Int_t i=0; i<fTRDnSlices; i++) fTRDslices[i]=-1.;
1455}
1456
1457void AliESDtrack::SetTRDslice(Double_t q, Int_t plane, Int_t slice) {
1458 //Sets the charge q in the slice of the plane
1459 Int_t ns=GetNumberOfTRDslices();
1460 if (ns==0) {
1461 AliError("No TRD slices allocated for this track !");
1462 return;
1463 }
1464
1465 if ((plane<0) || (plane>=kTRDnPlanes)) {
1466 AliError("Wrong TRD plane !");
1467 return;
1468 }
1469 if ((slice<0) || (slice>=ns)) {
1470 AliError("Wrong TRD slice !");
1471 return;
1472 }
1473 Int_t n=plane*ns + slice;
1474 fTRDslices[n]=q;
1475}
1476
1477Double_t AliESDtrack::GetTRDslice(Int_t plane, Int_t slice) const {
1478 //Gets the charge from the slice of the plane
1479 Int_t ns=GetNumberOfTRDslices();
1480 if (ns==0) {
1481 //AliError("No TRD slices allocated for this track !");
1482 return -1.;
1483 }
1484
1485 if ((plane<0) || (plane>=kTRDnPlanes)) {
1486 AliError("Wrong TRD plane !");
1487 return -1.;
1488 }
1489 if ((slice<-1) || (slice>=ns)) {
1490 //AliError("Wrong TRD slice !");
1491 return -1.;
1492 }
1493
1494 if (slice==-1) {
1495 Double_t q=0.;
1496 for (Int_t i=0; i<ns; i++) q+=fTRDslices[plane*ns + i];
1497 return q/ns;
1498 }
1499
1500 return fTRDslices[plane*ns + slice];
1501}
1502
1503
79e94bf8 1504//_______________________________________________________________________
c630aafd 1505void AliESDtrack::SetTOFpid(const Double_t *p) {
4427806c 1506 // Sets the probability of each particle type (in TOF)
d27bbc79 1507 SetPIDValues(fTOFr,p,AliPID::kSPECIES);
c630aafd 1508 SetStatus(AliESDtrack::kTOFpid);
1509}
1510
1511//_______________________________________________________________________
51ad6848 1512void AliESDtrack::SetTOFLabel(const Int_t *p) {
1513 // Sets (in TOF)
1514 for (Int_t i=0; i<3; i++) fTOFLabel[i]=p[i];
1515}
1516
1517//_______________________________________________________________________
c630aafd 1518void AliESDtrack::GetTOFpid(Double_t *p) const {
4427806c 1519 // Gets probabilities of each particle type (in TOF)
304864ab 1520 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fTOFr[i];
c630aafd 1521}
1522
51ad6848 1523//_______________________________________________________________________
1524void AliESDtrack::GetTOFLabel(Int_t *p) const {
1525 // Gets (in TOF)
1526 for (Int_t i=0; i<3; i++) p[i]=fTOFLabel[i];
1527}
1528
1529//_______________________________________________________________________
1530void AliESDtrack::GetTOFInfo(Float_t *info) const {
1531 // Gets (in TOF)
1532 for (Int_t i=0; i<10; i++) info[i]=fTOFInfo[i];
1533}
1534
1535//_______________________________________________________________________
1536void AliESDtrack::SetTOFInfo(Float_t*info) {
1537 // Gets (in TOF)
1538 for (Int_t i=0; i<10; i++) fTOFInfo[i]=info[i];
1539}
1540
4a78b8c5 1541
1542
1543//_______________________________________________________________________
f4b3bbb7 1544void AliESDtrack::SetHMPIDpid(const Double_t *p) {
1545 // Sets the probability of each particle type (in HMPID)
1546 SetPIDValues(fHMPIDr,p,AliPID::kSPECIES);
1547 SetStatus(AliESDtrack::kHMPIDpid);
4a78b8c5 1548}
1549
1550//_______________________________________________________________________
f4b3bbb7 1551void AliESDtrack::GetHMPIDpid(Double_t *p) const {
1552 // Gets probabilities of each particle type (in HMPID)
1553 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fHMPIDr[i];
4a78b8c5 1554}
1555
1556
1557
c630aafd 1558//_______________________________________________________________________
8c6a71ab 1559void AliESDtrack::SetESDpid(const Double_t *p) {
4427806c 1560 // Sets the probability of each particle type for the ESD track
d27bbc79 1561 SetPIDValues(fR,p,AliPID::kSPECIES);
8c6a71ab 1562 SetStatus(AliESDtrack::kESDpid);
1563}
1564
1565//_______________________________________________________________________
1566void AliESDtrack::GetESDpid(Double_t *p) const {
4427806c 1567 // Gets probability of each particle type for the ESD track
304864ab 1568 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fR[i];
8c6a71ab 1569}
1570
ac2f7574 1571//_______________________________________________________________________
d7ddf1e9 1572Bool_t AliESDtrack::RelateToVertexTPC
1573(const AliESDVertex *vtx, Double_t b, Double_t maxd) {
1574 //
1575 // Try to relate the TPC-only track paramters to the vertex "vtx",
1576 // if the (rough) transverse impact parameter is not bigger then "maxd".
1577 // Magnetic field is "b" (kG).
1578 //
1579 // a) The TPC-only paramters are extapolated to the DCA to the vertex.
1580 // b) The impact parameters and their covariance matrix are calculated.
1581 //
1582
1583 if (!fTPCInner) return kFALSE;
1584 if (!vtx) return kFALSE;
1585
1586 Double_t dz[2],cov[3];
1587 if (!fTPCInner->PropagateToDCA(vtx, b, maxd, dz, cov)) return kFALSE;
1588
1589 fdTPC = dz[0];
1590 fzTPC = dz[1];
1591 fCddTPC = cov[0];
1592 fCdzTPC = cov[1];
1593 fCzzTPC = cov[2];
1594
1595 return kTRUE;
1596}
1597
1598//_______________________________________________________________________
49d13e89 1599Bool_t AliESDtrack::RelateToVertex
1600(const AliESDVertex *vtx, Double_t b, Double_t maxd) {
1601 //
1602 // Try to relate this track to the vertex "vtx",
1603 // if the (rough) transverse impact parameter is not bigger then "maxd".
1604 // Magnetic field is "b" (kG).
1605 //
1606 // a) The track gets extapolated to the DCA to the vertex.
1607 // b) The impact parameters and their covariance matrix are calculated.
1608 // c) An attempt to constrain this track to the vertex is done.
1609 //
1610 // In the case of success, the returned value is kTRUE
1611 // (otherwise, it's kFALSE)
1612 //
b5d34a4c 1613
1614 if (!vtx) return kFALSE;
1615
e99a34df 1616 Double_t dz[2],cov[3];
1617 if (!PropagateToDCA(vtx, b, maxd, dz, cov)) return kFALSE;
1618
1619 fD = dz[0];
1620 fZ = dz[1];
1621 fCdd = cov[0];
1622 fCdz = cov[1];
1623 fCzz = cov[2];
49d13e89 1624
e99a34df 1625 Double_t covar[6]; vtx->GetCovMatrix(covar);
1626 Double_t p[2]={GetParameter()[0]-dz[0],GetParameter()[1]-dz[1]};
1627 Double_t c[3]={covar[2],0.,covar[5]};
3231f9e5 1628
e99a34df 1629 Double_t chi2=GetPredictedChi2(p,c);
1630 if (chi2>77.) return kFALSE;
49d13e89 1631
e99a34df 1632 delete fCp;
1633 fCp=new AliExternalTrackParam(*this);
49d13e89 1634
e99a34df 1635 if (!fCp->Update(p,c)) {delete fCp; fCp=0; return kFALSE;}
1636
1637 fCchi2=chi2;
49d13e89 1638 return kTRUE;
1639}
1640
1641//_______________________________________________________________________
ac2f7574 1642void AliESDtrack::Print(Option_t *) const {
1643 // Prints info on the track
b9ca886f 1644 AliExternalTrackParam::Print();
5f7789fc 1645 printf("ESD track info\n") ;
304864ab 1646 Double_t p[AliPID::kSPECIESN] ;
ac2f7574 1647 Int_t index = 0 ;
1648 if( IsOn(kITSpid) ){
1649 printf("From ITS: ") ;
1650 GetITSpid(p) ;
304864ab 1651 for(index = 0 ; index < AliPID::kSPECIES; index++)
ac2f7574 1652 printf("%f, ", p[index]) ;
1653 printf("\n signal = %f\n", GetITSsignal()) ;
1654 }
1655 if( IsOn(kTPCpid) ){
1656 printf("From TPC: ") ;
1657 GetTPCpid(p) ;
304864ab 1658 for(index = 0 ; index < AliPID::kSPECIES; index++)
ac2f7574 1659 printf("%f, ", p[index]) ;
1660 printf("\n signal = %f\n", GetTPCsignal()) ;
1661 }
1662 if( IsOn(kTRDpid) ){
1663 printf("From TRD: ") ;
1664 GetTRDpid(p) ;
304864ab 1665 for(index = 0 ; index < AliPID::kSPECIES; index++)
ac2f7574 1666 printf("%f, ", p[index]) ;
6984f7c1 1667 printf("\n signal = %f\n", GetTRDsignal()) ;
ac2f7574 1668 }
1669 if( IsOn(kTOFpid) ){
1670 printf("From TOF: ") ;
1671 GetTOFpid(p) ;
304864ab 1672 for(index = 0 ; index < AliPID::kSPECIES; index++)
ac2f7574 1673 printf("%f, ", p[index]) ;
1674 printf("\n signal = %f\n", GetTOFsignal()) ;
1675 }
f4b3bbb7 1676 if( IsOn(kHMPIDpid) ){
1677 printf("From HMPID: ") ;
1678 GetHMPIDpid(p) ;
304864ab 1679 for(index = 0 ; index < AliPID::kSPECIES; index++)
ac2f7574 1680 printf("%f, ", p[index]) ;
f4b3bbb7 1681 printf("\n signal = %f\n", GetHMPIDsignal()) ;
ac2f7574 1682 }
ac2f7574 1683}
6c94f330 1684
0c19adf7 1685
1686//
1687// Draw functionality
1688// Origin: Marian Ivanov, Marian.Ivanov@cern.ch
1689//
1690void AliESDtrack::FillPolymarker(TPolyMarker3D *pol, Float_t magF, Float_t minR, Float_t maxR, Float_t stepR){
1691 //
1692 // Fill points in the polymarker
1693 //
1694 TObjArray arrayRef;
1695 arrayRef.AddLast(new AliExternalTrackParam(*this));
1696 if (fIp) arrayRef.AddLast(new AliExternalTrackParam(*fIp));
1697 if (fOp) arrayRef.AddLast(new AliExternalTrackParam(*fOp));
1698 //
1699 Double_t mpos[3]={0,0,0};
1700 Int_t entries=arrayRef.GetEntries();
1701 for (Int_t i=0;i<entries;i++){
1702 Double_t pos[3];
1703 ((AliExternalTrackParam*)arrayRef.At(i))->GetXYZ(pos);
1704 mpos[0]+=pos[0]/entries;
1705 mpos[1]+=pos[1]/entries;
1706 mpos[2]+=pos[2]/entries;
1707 }
1708 // Rotate to the mean position
1709 //
1710 Float_t fi= TMath::ATan2(mpos[1],mpos[0]);
1711 for (Int_t i=0;i<entries;i++){
1712 Bool_t res = ((AliExternalTrackParam*)arrayRef.At(i))->Rotate(fi);
1713 if (!res) delete arrayRef.RemoveAt(i);
1714 }
1715 Int_t counter=0;
1716 for (Double_t r=minR; r<maxR; r+=stepR){
1717 Double_t sweight=0;
1718 Double_t mlpos[3]={0,0,0};
1719 for (Int_t i=0;i<entries;i++){
1720 Double_t point[3]={0,0,0};
1721 AliExternalTrackParam *param = ((AliExternalTrackParam*)arrayRef.At(i));
1722 if (!param) continue;
1723 if (param->GetXYZAt(r,magF,point)){
1724 Double_t weight = 1./(10.+(r-param->GetX())*(r-param->GetX()));
1725 sweight+=weight;
1726 mlpos[0]+=point[0]*weight;
1727 mlpos[1]+=point[1]*weight;
1728 mlpos[2]+=point[2]*weight;
1729 }
1730 }
1731 if (sweight>0){
1732 mlpos[0]/=sweight;
1733 mlpos[1]/=sweight;
1734 mlpos[2]/=sweight;
1735 pol->SetPoint(counter,mlpos[0],mlpos[1], mlpos[2]);
1736 printf("xyz\t%f\t%f\t%f\n",mlpos[0], mlpos[1],mlpos[2]);
1737 counter++;
1738 }
1739 }
1740}