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Adding the code for the (anti)proton analysis - SPECTRA directory
[u/mrichter/AliRoot.git] / ITS / AliITStrackerSA.cxx
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13918578 1/**************************************************************************
2 * Copyright(c) 1998-2003, 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
bf6adc12 16/* $Id$ */
17
13918578 18////////////////////////////////////////////////////
19// Stand alone tracker class //
20// Origin: Elisabetta Crescio //
21// e-mail: crescio@to.infn.it //
22// tracks are saved as AliITStrackV2 objects //
23////////////////////////////////////////////////////
24
aa4b78e1 25#include <stdlib.h>
bf6adc12 26
27#include <TArrayI.h>
13918578 28#include <TBranch.h>
13918578 29#include <TObjArray.h>
30#include <TTree.h>
bf6adc12 31
af885e0f 32#include "AliESDEvent.h"
bf6adc12 33#include "AliESDVertex.h"
34#include "AliESDtrack.h"
bf6adc12 35#include "AliITSVertexer.h"
13918578 36#include "AliITSclusterTable.h"
00a7cc50 37#include "AliITSRecPoint.h"
cc088660 38#include "AliITSgeomTGeo.h"
13918578 39#include "AliITStrackSA.h"
bf6adc12 40#include "AliITStrackerSA.h"
e340bb86 41#include "AliITSReconstructor.h"
bf6adc12 42#include "AliRun.h"
13918578 43
44ClassImp(AliITStrackerSA)
45
46//____________________________________________________________________________
e399f961 47AliITStrackerSA::AliITStrackerSA():AliITStrackerMI(),
48fPhiEstimate(0),
1966f03c 49fITSStandAlone(0),
e399f961 50fLambdac(0),
51fPhic(0),
52fCoef1(0),
53fCoef2(0),
54fCoef3(0),
55fNloop(0),
56fPhiWin(0),
57fLambdaWin(0),
58fVert(0),
59fVertexer(0),
e399f961 60fListOfTracks(0),
61fITSclusters(0),
62fSixPoints(0),
b8ed1a92 63fOuterStartLayer(0),
e399f961 64fCluLayer(0),
65fCluCoord(0){
13918578 66 // Default constructor
67 Init();
627b6db6 68
13918578 69}
2257f27e 70//____________________________________________________________________________
cc088660 71AliITStrackerSA::AliITStrackerSA(const Char_t *geom):AliITStrackerMI(0),
e399f961 72fPhiEstimate(0),
1966f03c 73fITSStandAlone(0),
e399f961 74fLambdac(0),
75fPhic(0),
76fCoef1(0),
77fCoef2(0),
78fCoef3(0),
79fNloop(0),
80fPhiWin(0),
81fLambdaWin(0),
82fVert(0),
83fVertexer(0),
e399f961 84fListOfTracks(0),
85fITSclusters(0),
86fSixPoints(0),
b8ed1a92 87fOuterStartLayer(0),
e399f961 88fCluLayer(0),
89fCluCoord(0)
2257f27e 90{
91 // Standard constructor (Vertex is known and passed to this obj.)
cc088660 92 if (geom) {
93 AliWarning("\"geom\" is actually a dummy argument !");
94 }
95
2257f27e 96 Init();
97 fVert = 0;
627b6db6 98
2257f27e 99}
100
13918578 101//____________________________________________________________________________
cc088660 102AliITStrackerSA::AliITStrackerSA(const Char_t *geom, AliESDVertex *vert):AliITStrackerMI(0),
e399f961 103fPhiEstimate(0),
1966f03c 104fITSStandAlone(0),
e399f961 105fLambdac(0),
106fPhic(0),
107fCoef1(0),
108fCoef2(0),
109fCoef3(0),
110fNloop(0),
111fPhiWin(0),
112fLambdaWin(0),
113fVert(vert),
114fVertexer(0),
e399f961 115fListOfTracks(0),
116fITSclusters(0),
117fSixPoints(0),
b8ed1a92 118fOuterStartLayer(0),
e399f961 119fCluLayer(0),
1966f03c 120fCluCoord(0)
13918578 121{
122 // Standard constructor (Vertex is known and passed to this obj.)
cc088660 123 if (geom) {
124 AliWarning("\"geom\" is actually a dummy argument !");
125 }
13918578 126 Init();
627b6db6 127
13918578 128}
129
13918578 130//____________________________________________________________________________
cc088660 131AliITStrackerSA::AliITStrackerSA(const Char_t *geom, AliITSVertexer *vertexer):AliITStrackerMI(0),
e399f961 132fPhiEstimate(0),
1966f03c 133fITSStandAlone(0),
e399f961 134fLambdac(0),
135fPhic(0),
136fCoef1(0),
137fCoef2(0),
138fCoef3(0),
139fNloop(0),
140fPhiWin(0),
141fLambdaWin(0),
142fVert(),
143fVertexer(vertexer),
e399f961 144fListOfTracks(0),
145fITSclusters(0),
146fSixPoints(0),
b8ed1a92 147fOuterStartLayer(0),
e399f961 148fCluLayer(0),
1966f03c 149fCluCoord(0)
13918578 150{
151 // Standard constructor (Vertex is unknown - vertexer is passed to this obj)
cc088660 152 if (geom) {
153 AliWarning("\"geom\" is actually a dummy argument !");
154 }
13918578 155 Init();
156 fVertexer = vertexer;
627b6db6 157
13918578 158}
159
160//____________________________________________________________________________
e399f961 161AliITStrackerSA::AliITStrackerSA(const AliITStrackerSA& tracker):AliITStrackerMI(),
162fPhiEstimate(tracker.fPhiEstimate),
1966f03c 163fITSStandAlone(tracker.fITSStandAlone),
e399f961 164fLambdac(tracker.fLambdac),
165fPhic(tracker.fPhic),
166fCoef1(tracker.fCoef1),
167fCoef2(tracker.fCoef2),
168fCoef3(tracker.fCoef3),
169fNloop(tracker.fNloop),
170fPhiWin(tracker.fPhiWin),
171fLambdaWin(tracker.fLambdaWin),
172fVert(tracker.fVert),
173fVertexer(tracker.fVertexer),
e399f961 174fListOfTracks(tracker.fListOfTracks),
175fITSclusters(tracker.fITSclusters),
176fSixPoints(tracker.fSixPoints),
b8ed1a92 177fOuterStartLayer(tracker.fOuterStartLayer),
e399f961 178fCluLayer(tracker.fCluLayer),
179fCluCoord(tracker.fCluCoord) {
13918578 180 // Copy constructor
13918578 181 for(Int_t i=0;i<2;i++){
182 fPoint1[i]=tracker.fPoint1[i];
183 fPoint2[i]=tracker.fPoint2[i];
184 fPoint3[i]=tracker.fPoint3[i];
185 fPointc[i]=tracker.fPointc[i];
186 }
13918578 187 if(tracker.fVertexer && tracker.fVert){
d681bb2d 188 fVert = new AliESDVertex(*tracker.fVert);
13918578 189 }
190 else {
191 fVert = tracker.fVert;
192 }
cc088660 193 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
7e5bf5af 194 fCluLayer[i] = tracker.fCluLayer[i];
195 fCluCoord[i] = tracker.fCluCoord[i];
196 }
13918578 197}
7d62fb64 198//______________________________________________________________________
e399f961 199AliITStrackerSA& AliITStrackerSA::operator=(const AliITStrackerSA& source){
200 // Assignment operator.
201 this->~AliITStrackerSA();
202 new(this) AliITStrackerSA(source);
203 return *this;
204
7d62fb64 205}
13918578 206
207//____________________________________________________________________________
208AliITStrackerSA::~AliITStrackerSA(){
209 // destructor
d681bb2d 210 // if fVertexer is not null, the AliESDVertex obj. is owned by this class
13918578 211 // and is deleted here
212 if(fVertexer){
213 if(fVert)delete fVert;
214 }
215 fVert = 0;
216 fVertexer = 0;
7e5bf5af 217
13918578 218 if(fPhiWin)delete []fPhiWin;
219 if(fLambdaWin)delete []fLambdaWin;
4e05ab9a 220 fListOfTracks->Delete();
adda6c2b 221 delete fListOfTracks;
7e5bf5af 222 if(fCluLayer){
cc088660 223 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
7e5bf5af 224 if(fCluLayer[i]){
225 fCluLayer[i]->Delete();
226 delete fCluLayer[i];
227 }
228 }
229 delete [] fCluLayer;
230 }
231 if(fCluCoord){
cc088660 232 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
7e5bf5af 233 if(fCluCoord[i]){
234 fCluCoord[i]->Delete();
235 delete fCluCoord[i];
236 }
237 }
238 delete [] fCluCoord;
627b6db6 239 }
7e5bf5af 240
7e5bf5af 241}
13918578 242
1966f03c 243//____________________________________________________________________________
af885e0f 244Int_t AliITStrackerSA::Clusters2Tracks(AliESDEvent *event){
1966f03c 245// This method is used to find and fit the tracks. By default the corresponding
246// method in the parent class is invoked. In this way a combined tracking
247// TPC+ITS is performed. If the flag fITSStandAlone is true, the tracking
248// is done in the ITS only. In the standard reconstruction chain this option
249// can be set via AliReconstruction::SetOption("ITS","onlyITS")
250 Int_t rc=0;
251 if(!fITSStandAlone){
252 rc=AliITStrackerMI::Clusters2Tracks(event);
253 }
254 else {
255 AliDebug(1,"Stand Alone flag set: doing tracking in ITS alone\n");
256 }
257 if(!rc) rc=FindTracks(event);
258 return rc;
259}
260
13918578 261//____________________________________________________________________________
262void AliITStrackerSA::Init(){
263 // Reset all data members
264 fPhiEstimate=0;
265 for(Int_t i=0;i<3;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;}
266 fLambdac=0;
267 fPhic=0;
268 fCoef1=0;
269 fCoef2=0;
270 fCoef3=0;
271 fPointc[0]=0;
272 fPointc[1]=0;
273 fVert = 0;
274 fVertexer = 0;
13918578 275 SetWindowSizes();
2257f27e 276 fITSclusters = 0;
277 SetSixPoints();
b8ed1a92 278 SetOuterStartLayer(0);
1966f03c 279 SetSAFlag(kFALSE);
4e05ab9a 280 fListOfTracks=new TObjArray(0,0);
7e5bf5af 281 fCluLayer = 0;
282 fCluCoord = 0;
627b6db6 283 }
13918578 284//_______________________________________________________________________
285void AliITStrackerSA::ResetForFinding(){
286 // Reset data members used in all loops during track finding
287 fPhiEstimate=0;
288 for(Int_t i=0;i<3;i++){fPoint1[i]=0;fPoint2[i]=0;fPoint3[i]=0;}
289 fLambdac=0;
290 fPhic=0;
291 fCoef1=0;
292 fCoef2=0;
293 fCoef3=0;
294 fPointc[0]=0;
295 fPointc[1]=0;
4e05ab9a 296 fListOfTracks->Delete();
13918578 297}
bef31448 298
7e5bf5af 299
2257f27e 300
bef31448 301//______________________________________________________________________
af885e0f 302Int_t AliITStrackerSA::FindTracks(AliESDEvent* event){
bef31448 303
7e5bf5af 304// Track finder using the ESD object
305
2257f27e 306
7e5bf5af 307 //controllare numero cluster sui layer1 e 2 (morti?)
308 //non trova tracce...controllare..
4e05ab9a 309
2257f27e 310 if(!fITSclusters){
311 Fatal("FindTracks","ITS cluster tree is not accessed - Abort!!!\n Please use method SetClusterTree to pass the pointer to the tree\n");
312 return -1;
bef31448 313 }
7e5bf5af 314
315
316 //Reads event and mark clusters of traks already found, with flag kITSin
317 Int_t nentr=event->GetNumberOfTracks();
318 while (nentr--) {
319 AliESDtrack *track=event->GetTrack(nentr);
320 if (track->GetStatus()&AliESDtrack::kITSin==AliESDtrack::kITSin){
ef7253ac 321 Int_t idx[12];
7e5bf5af 322 Int_t ncl = track->GetITSclusters(idx);
323 for(Int_t k=0;k<ncl;k++){
00a7cc50 324 AliITSRecPoint* cll = (AliITSRecPoint*)GetCluster(idx[k]);
7e5bf5af 325 cll->SetBit(kSAflag);
326 }
327 }
328 }
329
b8ed1a92 330 //Get primary vertex
7e5bf5af 331 Double_t primaryVertex[3];
332 event->GetVertex()->GetXYZ(primaryVertex);
333 //Creates TClonesArray with clusters for each layer. The clusters already used
334 //by AliITStrackerMI are not considered
335
336 Int_t nclusters[6]={0,0,0,0,0,0};
337 Int_t dmar[6]={0,0,0,0,0,0};
adda6c2b 338 if (fCluLayer == 0) {
cc088660 339 fCluLayer = new TClonesArray*[AliITSgeomTGeo::GetNLayers()];
340 fCluCoord = new TClonesArray*[AliITSgeomTGeo::GetNLayers()];
adda6c2b 341 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
342 fCluLayer[i]=0;
343 fCluCoord[i]=0;
344 }
345 }
cc088660 346 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
7e5bf5af 347 AliITSlayer &layer=fgLayers[i];
348 for(Int_t cli=0;cli<layer.GetNumberOfClusters();cli++){
00a7cc50 349 AliITSRecPoint* cls = (AliITSRecPoint*)layer.GetCluster(cli);
7e5bf5af 350 if(cls->TestBit(kSAflag)==kTRUE) continue; //clusters used by TPC prol.
351 if(cls->GetQ()==0) continue; //fake clusters dead zones
352 nclusters[i]++;
353 }
354 dmar[i]=0;
adda6c2b 355 delete fCluLayer[i];
00a7cc50 356 fCluLayer[i] = new TClonesArray("AliITSRecPoint",nclusters[i]);
adda6c2b 357 delete fCluCoord[i];
7e5bf5af 358 fCluCoord[i] = new TClonesArray("AliITSclusterTable",nclusters[i]);
359 }
360
361
cc088660 362 Int_t * firstmod = new Int_t[AliITSgeomTGeo::GetNLayers()];
363 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
364 firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1);
7e5bf5af 365 }
366
cc088660 367 for(Int_t ilay=0;ilay<AliITSgeomTGeo::GetNLayers();ilay++){
7e5bf5af 368 TClonesArray &clulay = *fCluLayer[ilay];
369 TClonesArray &clucoo = *fCluCoord[ilay];
370 AliITSlayer &layer=fgLayers[ilay];
371 for(Int_t cli=0;cli<layer.GetNumberOfClusters();cli++){
00a7cc50 372 AliITSRecPoint* cls = (AliITSRecPoint*)layer.GetCluster(cli);
7e5bf5af 373 if(cls->TestBit(kSAflag)==kTRUE) continue;
374 if(cls->GetQ()==0) continue;
375 Double_t phi=0;Double_t lambda=0;
376 Float_t x=0;Float_t y=0;Float_t z=0;
377 Float_t sx=0;Float_t sy=0;Float_t sz=0;
cc088660 378 GetCoorAngles(cls,phi,lambda,x,y,z,primaryVertex);
379 GetCoorErrors(cls,sx,sy,sz);
00a7cc50 380 new (clulay[dmar[ilay]]) AliITSRecPoint(*cls);
7e5bf5af 381 new (clucoo[dmar[ilay]]) AliITSclusterTable(x,y,z,sx,sy,sz,phi,lambda,cli);
382 dmar[ilay]++;
383 }
384 }
385
2257f27e 386
7e5bf5af 387
388 Int_t ntrack=0;
389 //loop on the different windows
390 for(Int_t nloop=0;nloop<fNloop;nloop++){
391 for(Int_t ncl=0;ncl<fCluLayer[0]->GetEntries();ncl++){ //loop starting from layer 0
392
393 ResetForFinding();
394 Int_t pflag=0;
395
00a7cc50 396 AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[0]->At(ncl);
7e5bf5af 397
398 if(!cl) continue;
399
400
401 if (cl->GetQ()<=0) continue;
402
403 AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(0,ncl);
404 fPhic = arr->GetPhi();
405 fLambdac = arr->GetLambda();
406 if (TMath::Abs(fLambdac)>0.26*TMath::Pi()) continue;
407 fPhiEstimate = fPhic;
408 AliITStrackSA* trs = new AliITStrackSA();
409 fPoint1[0]=primaryVertex[0];
410 fPoint1[1]=primaryVertex[1];
411
412
413 fPoint2[0]=arr->GetX();
414 fPoint2[1]=arr->GetY();
cc088660 415 Int_t * nn = new Int_t[AliITSgeomTGeo::GetNLayers()];//counter for clusters on each layer
416 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ nn[i]=0;}
7e5bf5af 417 nn[0] = SearchClusters(0,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
418
419 nn[1] = SearchClusters(1,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
bef31448 420 if(nn[1]>0){
421 pflag=1;
422 fPoint3[0] = fPointc[0];
423 fPoint3[1] = fPointc[1];
424 }
cfe729e0 425 nn[2] = SearchClusters(2,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
bef31448 426 if(nn[1]==0 && nn[2]==0) pflag=0;
427 if(nn[2]!=0 && nn[1]!=0){ pflag=1; UpdatePoints();}
428 if(nn[2]!=0 && nn[1]==0){
429 pflag=1;
430 fPoint3[0]=fPointc[0];
431 fPoint3[1]=fPointc[1];
432 }
13918578 433
cfe729e0 434 nn[3] = SearchClusters(3,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
bef31448 435 pflag=1;
436 if(nn[3]!=0) UpdatePoints();
cfe729e0 437 nn[4] = SearchClusters(4,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
bef31448 438 pflag=1;
439 if(nn[4]!=0) UpdatePoints();
cfe729e0 440 nn[5] = SearchClusters(5,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
bef31448 441
442
443 Int_t layOK=0;
444 Int_t numberofpoints;
2257f27e 445 if(fSixPoints) numberofpoints=6; //check of the candidate track
bef31448 446 else numberofpoints=5; //if track is good (with the required number
cc088660 447 for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers();nnp++){ //of points) it is written on file
bef31448 448 if(nn[nnp]!=0) layOK+=1;
449 }
450 if(layOK>=numberofpoints){
7e5bf5af 451
452 AliITStrackV2* tr2 = FitTrack(trs,primaryVertex);
bef31448 453
7e5bf5af 454 if(tr2==0) continue;
455
bef31448 456 AliESDtrack outtrack;
457 outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin);
458 event->AddTrack(&outtrack);
bef31448 459 ntrack++;
bef31448 460 }
7e5bf5af 461
462
bef31448 463 delete trs;
2257f27e 464 delete[] nn;
627b6db6 465
7e5bf5af 466 }//end loop on clusters of layer1
627b6db6 467
7e5bf5af 468 //end loop2
469 }
bef31448 470
7e5bf5af 471 //if 5/6 points are required, second loop starting
b8ed1a92 472 //from second layer (SPD2), to find tracks with point of
473 //layer 1 missing
474 if(!fSixPoints) {
475 //printf("looking from SPD2\n");
7e5bf5af 476 // counter for clusters on each layer
cc088660 477 Int_t * nn = new Int_t[AliITSgeomTGeo::GetNLayers()-1];
7e5bf5af 478 for(Int_t nloop=0;nloop<fNloop;nloop++){
479 Int_t ncl2=fCluLayer[1]->GetEntries();
480 while(ncl2--){ //loop starting from layer 2
481 ResetForFinding();
482 Int_t pflag=0;
00a7cc50 483 AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[1]->At(ncl2);
7e5bf5af 484
485 if(!cl) continue;
486 AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(1,ncl2);
487 fPhic = arr->GetPhi();
488 fLambdac = arr->GetLambda();
489 fPhiEstimate = fPhic;
490
491 AliITStrackSA* trs = new AliITStrackSA();
492 fPoint1[0]=primaryVertex[0];
493 fPoint1[1]=primaryVertex[1];
494
495 fPoint2[0]=arr->GetX();
496 fPoint2[1]=arr->GetY();
cc088660 497 for(Int_t kk=0;kk<AliITSgeomTGeo::GetNLayers()-1;kk++)nn[kk] = 0;
7e5bf5af 498 nn[0] = SearchClusters(1,fPhiWin[nloop],fLambdaWin[nloop],
499 trs,primaryVertex[2],pflag);
500 nn[1] = SearchClusters(2,fPhiWin[nloop],fLambdaWin[nloop],
501 trs,primaryVertex[2],pflag);
502 if(nn[1]!=0){
503 pflag=1;
504 fPoint3[0]=fPointc[0];
505 fPoint3[1]=fPointc[1];
506 }
507 nn[2]= SearchClusters(3,fPhiWin[nloop],fLambdaWin[nloop],
508 trs,primaryVertex[2],pflag);
509 if(nn[2]!=0){
510 pflag=1;
511 UpdatePoints();
512 }
513 nn[3]= SearchClusters(4,fPhiWin[nloop],fLambdaWin[nloop],
514 trs,primaryVertex[2],pflag);
515 if(nn[3]!=0){
516 pflag=1;
517 UpdatePoints();
518 }
519 nn[4]=SearchClusters(5,fPhiWin[nloop],fLambdaWin[nloop],
520 trs,primaryVertex[2],pflag);
521
522 Int_t fl=0;
cc088660 523 for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-1;nnp++){
7e5bf5af 524 if(nn[nnp]!=0) fl+=1;
525 }
526 if(fl>=5){ // 5/6
527 AliITStrackV2* tr2 = FitTrack(trs,primaryVertex);
528 if(tr2==0){
529 continue;
530 }
531
532 AliESDtrack outtrack;
533 outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin);
534 event->AddTrack(&outtrack);
535 ntrack++;
536
537 }
b8ed1a92 538
bef31448 539 delete trs;
540 }//end loop on clusters of layer2
7e5bf5af 541 }
542
bef31448 543 delete [] nn;
b8ed1a92 544 } //end opt="5/6"
545
546
547
548 // search for tracks starting from SPD2, SDD1, SDD2, SSD2
549 // for cosmics (A. Dainese 31.07.07)
550 if(fOuterStartLayer>0) {
551 for(Int_t innLay=1; innLay<=fOuterStartLayer; innLay++) {
552 printf("Searching from layer %d outward\n",innLay);
553 // counter for clusters on each layer
554 Int_t * nn = new Int_t[AliITSgeomTGeo::GetNLayers()-innLay];
555 for(Int_t nloop=0;nloop<fNloop;nloop++){
556 Int_t nclInnLay=fCluLayer[innLay]->GetEntries();
557 while(nclInnLay--){ //loop starting from layer innLay
558 ResetForFinding();
559 Int_t pflag=0;
560 AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[innLay]->At(nclInnLay);
561
562 if(!cl) continue;
563 AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(innLay,nclInnLay);
564 fPhic = arr->GetPhi();
565 fLambdac = arr->GetLambda();
566 fPhiEstimate = fPhic;
567
568 AliITStrackSA* trs = new AliITStrackSA();
569 fPoint1[0]=primaryVertex[0];
570 fPoint1[1]=primaryVertex[1];
571 fPoint2[0]=arr->GetX();
572 fPoint2[1]=arr->GetY();
573
574 Int_t kk;
575 for(kk=0;kk<AliITSgeomTGeo::GetNLayers()-innLay;kk++) nn[kk] = 0;
576
577 kk=0;
578 nn[kk] = SearchClusters(innLay,fPhiWin[nloop],fLambdaWin[nloop],
579 trs,primaryVertex[2],pflag);
580 for(Int_t nextLay=innLay+1; nextLay<AliITSgeomTGeo::GetNLayers(); nextLay++) {
581 kk++;
582 nn[kk] = SearchClusters(nextLay,fPhiWin[nloop],fLambdaWin[nloop],
583 trs,primaryVertex[2],pflag);
584 if(nn[kk]!=0){
585 pflag=1;
586 if(kk==1) {
587 fPoint3[0]=fPointc[0];
588 fPoint3[1]=fPointc[1];
589 } else {
590 UpdatePoints();
591 }
592 }
593 }
594
595 Int_t fl=0;
596 for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-innLay;nnp++){
597 if(nn[nnp]!=0) fl+=1;
598 }
599 if(fl>=AliITSgeomTGeo::GetNLayers()-innLay){
600 AliITStrackV2* tr2 = FitShortTrack(trs,primaryVertex,innLay);
601 if(tr2==0){
602 continue;
603 }
604
605 AliESDtrack outtrack;
606 outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin);
607 event->AddTrack(&outtrack);
608 ntrack++;
609
610 }
611
612 delete trs;
613 }//end loop on clusters of innLay
614 } //end loop on window sizes
615
616 delete [] nn;
617 } //end loop on innLay
618 } //end if(fOuterStartLayer>0)
619
7e5bf5af 620
bef31448 621 delete [] firstmod;
bef31448 622 Info("FindTracks","Number of found tracks: %d",event->GetNumberOfTracks());
2257f27e 623 return 0;
bef31448 624
625}
7e5bf5af 626
627
628
2257f27e 629
630
13918578 631//________________________________________________________________________
632
7e5bf5af 633AliITStrackV2* AliITStrackerSA::FitTrack(AliITStrackSA* tr,Double_t *primaryVertex){
13918578 634 //fit of the found track
635
13918578 636
cc088660 637 Int_t * firstmod = new Int_t[AliITSgeomTGeo::GetNLayers()];
638 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
639 firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1);
13918578 640 }
15dd636f 641
13918578 642 Int_t nclusters = tr->GetNumberOfClustersSA();
cc088660 643 TObjArray** listlayer = new TObjArray*[AliITSgeomTGeo::GetNLayers()];
644 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
13918578 645 listlayer[i] = new TObjArray(0,0);
646 }
647
648 TArrayI clind0(20);
649 TArrayI clind1(20);
650 TArrayI clind2(20);
651 TArrayI clind3(20);
652 TArrayI clind4(20);
653 TArrayI clind5(20);
654
7e5bf5af 655 TArrayI mark0(20);
656 TArrayI mark1(20);
657 TArrayI mark2(20);
658 TArrayI mark3(20);
659 TArrayI mark4(20);
660 TArrayI mark5(20);
661
662
cc088660 663 Int_t * nnn = new Int_t[AliITSgeomTGeo::GetNLayers()];
664 Int_t * kkk = new Int_t[AliITSgeomTGeo::GetNLayers()];
665 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {nnn[i]=0;kkk[i]=0;}
13918578 666
667 for(Int_t ncl=0;ncl<nclusters;ncl++){
7e5bf5af 668 Int_t index = tr->GetClusterIndexSA(ncl);
00a7cc50 669 AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(index);
627b6db6 670 if(cl->TestBit(kSAflag)==kTRUE) cl->ResetBit(kSAflag);
13918578 671 Int_t lay = (index & 0xf0000000) >> 28;
672 if(lay==0) { listlayer[0]->AddLast(cl); clind0[nnn[0]]=index;nnn[0]++;}
673 if(lay==1) { listlayer[1]->AddLast(cl); clind1[nnn[1]]=index;nnn[1]++;}
674 if(lay==2) { listlayer[2]->AddLast(cl); clind2[nnn[2]]=index;nnn[2]++;}
675 if(lay==3) { listlayer[3]->AddLast(cl); clind3[nnn[3]]=index;nnn[3]++;}
676 if(lay==4) { listlayer[4]->AddLast(cl); clind4[nnn[4]]=index;nnn[4]++;}
677 if(lay==5) { listlayer[5]->AddLast(cl); clind5[nnn[5]]=index;nnn[5]++;}
678 }
037efb75 679 delete [] nnn;
13918578 680
cc088660 681 for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
7e5bf5af 682 for(Int_t ncl=0;ncl<tr->GetNumberOfMarked(nlay);ncl++){
683 Int_t mark = tr->GetClusterMark(nlay,ncl);
684 if(nlay==0) { mark0[kkk[0]]=mark;kkk[0]++;}
685 if(nlay==1) { mark1[kkk[1]]=mark;kkk[1]++;}
686 if(nlay==2) { mark2[kkk[2]]=mark;kkk[2]++;}
687 if(nlay==3) { mark3[kkk[3]]=mark;kkk[3]++;}
688 if(nlay==4) { mark4[kkk[4]]=mark;kkk[4]++;}
689 if(nlay==5) { mark5[kkk[5]]=mark;kkk[5]++;}
690
691 }
692 }
693
694 delete [] kkk;
695
13918578 696
cc088660 697 Int_t * end = new Int_t[AliITSgeomTGeo::GetNLayers()];
698 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
13918578 699 if(listlayer[i]->GetEntries()==0) end[i]=1;
700 else end[i]=listlayer[i]->GetEntries();
701 }
702
7e5bf5af 703 TClonesArray* listSA = new TClonesArray("AliITStrackSA");
704 TClonesArray &tri = *listSA;
705 Int_t nlist=0;
706
707 if(end[0]==0) end[0]=1; //for tracks with cluster on layer 0 missing
b8ed1a92 708 for(Int_t l1=0;l1<end[0];l1++){ //loop on layer 1
00a7cc50 709 AliITSRecPoint* cl0 = (AliITSRecPoint*)listlayer[0]->At(l1);
13918578 710 Double_t x1,y1,z1,sx1,sy1,sz1;
711 Double_t x2,y2,z2,sx2,sy2,sz2;
00a7cc50 712 AliITSRecPoint* p1=0;
713 AliITSRecPoint* p2=0;
bef31448 714 Int_t index1=clind0[l1];
715 Int_t index2=0;
7e5bf5af 716 Int_t mrk1 = mark0[l1];
717 Int_t mrk2 = 0;
718 Int_t lay1=0;
719 Int_t lay2=1;
720 Int_t module1=-1;
b8ed1a92 721 for(Int_t l2=0;l2<end[1];l2++){ //loop on layer 2
00a7cc50 722 AliITSRecPoint* cl1 = (AliITSRecPoint*)listlayer[1]->At(l2);
bef31448 723 index2=clind1[l2];
7e5bf5af 724 mrk2 = mark1[l2];
13918578 725 for(Int_t l3=0;l3<end[2];l3++){ //loop on layer 3
00a7cc50 726 AliITSRecPoint* cl2 = (AliITSRecPoint*)listlayer[2]->At(l3);
bef31448 727
728 if(cl0==0 && cl1!=0) {
bef31448 729 p1=cl1;
b8ed1a92 730 p2=cl2;
731 index1=clind1[l2];mrk1=mark1[l2];
732 index2=clind2[l3];mrk2=mark2[l3];
733 lay1=1;
734 lay2=2;
7e5bf5af 735 module1 = p1->GetDetectorIndex()+firstmod[1];
bef31448 736 }
737 if(cl0!=0 && cl1==0){
738 p1=cl0;
b8ed1a92 739 p2=cl2;index2=clind2[l3];mrk2=mark2[l3];
740 lay1=0;
741 lay2=2;
7e5bf5af 742 module1 = p1->GetDetectorIndex()+firstmod[0];
bef31448 743 }
744 if(cl0!=0 && cl1!=0){
745 p1=cl0;
746 p2=cl1;
b8ed1a92 747 lay1=0;
748 lay2=1;
7e5bf5af 749 module1 = p1->GetDetectorIndex()+firstmod[0];
bef31448 750 }
7e5bf5af 751
752 Int_t cln1=mrk1;
753 Int_t cln2=mrk2;
b8ed1a92 754 AliITSclusterTable* arr1 = (AliITSclusterTable*)GetClusterCoord(lay1,cln1);
755 AliITSclusterTable* arr2 = (AliITSclusterTable*)GetClusterCoord(lay2,cln2);
756 x1 = arr1->GetX();
757 x2 = arr2->GetX();
758 y1 = arr1->GetY();
759 y2 = arr2->GetY();
760 z1 = arr1->GetZ();
761 z2 = arr2->GetZ();
762 sx1 = arr1->GetSx();
763 sx2 = arr2->GetSx();
764 sy1 = arr1->GetSy();
765 sy2 = arr2->GetSy();
766 sz1 = arr1->GetSz();
767 sz2 = arr2->GetSz();
7e5bf5af 768
13918578 769 Int_t layer,ladder,detector;
cc088660 770 AliITSgeomTGeo::GetModuleId(module1,layer,ladder,detector);
bef31448 771 Float_t yclu1 = p1->GetY();
772 Float_t zclu1 = p1->GetZ();
b8ed1a92 773 Double_t cv=Curvature(primaryVertex[0],primaryVertex[1],x1,y1,x2,y2);
7e5bf5af 774 Double_t tgl2 = (z2-z1)/TMath::Sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
775 Double_t phi2 = TMath::ATan2((y2-y1),(x2-x1));
776
bef31448 777 for(Int_t l4=0;l4<end[3];l4++){ //loop on layer 4
00a7cc50 778 AliITSRecPoint* cl3 = (AliITSRecPoint*)listlayer[3]->At(l4);
bef31448 779 for(Int_t l5=0;l5<end[4];l5++){ //loop on layer 5
00a7cc50 780 AliITSRecPoint* cl4 = (AliITSRecPoint*)listlayer[4]->At(l5);
bef31448 781 for(Int_t l6=0;l6<end[5];l6++){ //loop on layer 6
00a7cc50 782 AliITSRecPoint* cl5 = (AliITSRecPoint*)listlayer[5]->At(l6);
cc088660 783 AliITStrackSA* trac = new AliITStrackSA(layer,ladder,detector,yclu1,zclu1,phi2,tgl2,cv,1);
bef31448 784
7e5bf5af 785 if(cl5!=0) {
786 trac->AddClusterV2(5,(clind5[l6] & 0x0fffffff)>>0);
787 trac->AddClusterMark(5,mark5[l6]);
788 }
789 if(cl4!=0){
790 trac->AddClusterV2(4,(clind4[l5] & 0x0fffffff)>>0);
791 trac->AddClusterMark(4,mark4[l5]);
792 }
793 if(cl3!=0){
794 trac->AddClusterV2(3,(clind3[l4] & 0x0fffffff)>>0);
795 trac->AddClusterMark(3,mark3[l4]);
796 }
797 if(cl2!=0){
798 trac->AddClusterV2(2,(clind2[l3] & 0x0fffffff)>>0);
799 trac->AddClusterMark(2,mark2[l3]);
800 }
801 if(cl1!=0){
802 trac->AddClusterV2(1,(clind1[l2] & 0x0fffffff)>>0);
803 trac->AddClusterMark(1,mark1[l2]);
804 }
805 if(cl0!=0){
806 trac->AddClusterV2(0,(clind0[l1] & 0x0fffffff)>>0);
807 trac->AddClusterMark(0,mark0[l1]);
808 }
e43c066c 809 //fit with Kalman filter using AliITStrackerMI::RefitAt()
bef31448 810
7e5bf5af 811
15dd636f 812 AliITStrackMI* ot = new AliITStrackSA(*trac);
bef31448 813
6c94f330 814 ot->ResetCovariance(10.);
bef31448 815 ot->ResetClusters();
816
e50912db 817 if(RefitAt(AliITSRecoParam::GetrInsideITSscreen(),ot,trac)){ //fit from layer 1 to layer 6
15dd636f 818 AliITStrackMI *otrack2 = new AliITStrackMI(*ot);
6c94f330 819 otrack2->ResetCovariance(10.);
bef31448 820 otrack2->ResetClusters();
821 //fit from layer 6 to layer 1
e50912db 822 if(RefitAt(AliITSRecoParam::GetrInsideSPD1(),otrack2,ot)) {
73f446a0 823 fListOfTracks->AddLast(otrack2);
7e5bf5af 824 new (tri[nlist]) AliITStrackSA(*trac);
825 nlist++;
73f446a0 826 } else {
827 delete otrack2;
828 }
bef31448 829
830 }
831
832 delete ot;
833 delete trac;
834 }//end loop layer 6
835 }//end loop layer 5
b8ed1a92 836 }//end loop layer 4
13918578 837 }//end loop layer 3
bef31448 838 }//end loop layer 2
13918578 839 }//end loop layer 1
840
037efb75 841 delete [] end;
842
7e5bf5af 843
844
4e05ab9a 845 Int_t dim=fListOfTracks->GetEntries();
13918578 846 if(dim==0){
cc088660 847 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
13918578 848 delete listlayer[i];
849 }
c09cece6 850 delete [] listlayer;
00a7cc50 851 listSA->Delete();
852 delete listSA;
73f446a0 853 delete [] firstmod;
13918578 854 return 0;
855 }
856
7e5bf5af 857 Int_t lowchi2 = FindTrackLowChiSquare(fListOfTracks,dim);
858 AliITStrackV2* otrack =(AliITStrackV2*)fListOfTracks->At(lowchi2);
859 AliITStrackSA* trsa = (AliITStrackSA*)listSA->At(lowchi2);
860
73f446a0 861 if(otrack==0) {
cc088660 862 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
73f446a0 863 delete listlayer[i];
864 }
c09cece6 865 delete [] listlayer;
00a7cc50 866 listSA->Delete();
867 delete listSA;
73f446a0 868 delete [] firstmod;
869 return 0;
870 }
cc088660 871 Int_t * indexc = new Int_t[AliITSgeomTGeo::GetNLayers()];
872 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) indexc[i]=0;
13918578 873 for(Int_t nind=0;nind<otrack->GetNumberOfClusters();nind++){
874 indexc[nind] = otrack->GetClusterIndex(nind);
875 }
00a7cc50 876 AliITSRecPoint* cl0 = (AliITSRecPoint*)GetCluster(indexc[0]);
877 AliITSRecPoint* cl1 = (AliITSRecPoint*)GetCluster(indexc[1]);
878 AliITSRecPoint* cl2 = (AliITSRecPoint*)GetCluster(indexc[2]);
879 AliITSRecPoint* cl3 = (AliITSRecPoint*)GetCluster(indexc[3]);
880 AliITSRecPoint* cl4 = (AliITSRecPoint*)GetCluster(indexc[4]);
13918578 881 Int_t labl[3]={-1,-1,-1};
cc088660 882 if(otrack->GetNumberOfClusters()==AliITSgeomTGeo::GetNLayers()){
00a7cc50 883 AliITSRecPoint* cl5 = (AliITSRecPoint*)GetCluster(indexc[5]);
13918578 884 labl[0]=cl5->GetLabel(0);
885 labl[1]=cl5->GetLabel(1);
886 labl[2]=cl5->GetLabel(2);
887 }
037efb75 888 delete [] indexc;
cc088660 889 if(otrack->GetNumberOfClusters()==(AliITSgeomTGeo::GetNLayers()-1)){
13918578 890 labl[0]=-1;
891 labl[1]=-1;
892 labl[2]=-1;
893 }
894 Int_t numberofpoints;
2257f27e 895 if(fSixPoints) numberofpoints=6;
13918578 896 else numberofpoints=5;
e43c066c 897 CookLabel(otrack,0.); //MI change - to see fake ratio
13918578 898 Int_t label = Label(cl0->GetLabel(0),cl1->GetLabel(0),
bef31448 899 cl2->GetLabel(0),cl3->GetLabel(0),
900 cl4->GetLabel(0),labl[0],
901 cl0->GetLabel(1),cl1->GetLabel(1),
902 cl2->GetLabel(1),cl3->GetLabel(1),
903 cl4->GetLabel(1),labl[1],
904 cl0->GetLabel(2),cl1->GetLabel(2),
905 cl2->GetLabel(2),cl3->GetLabel(2),
906 cl4->GetLabel(2),labl[2],numberofpoints);
13918578 907
908 otrack->SetLabel(label);
7e5bf5af 909 //remove clusters of found track
910
cc088660 911 for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
7e5bf5af 912 for(Int_t cln=0;cln<trsa->GetNumberOfMarked(nlay);cln++){
913 Int_t index = trsa->GetClusterMark(nlay,cln);
914 fCluLayer[nlay]->RemoveAt(index);
915 RemoveClusterCoord(nlay,index);
916 fCluLayer[nlay]->Compress();
b8ed1a92 917 }
918 }
919 listSA->Delete();
920 delete listSA;
921
922 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
923 delete listlayer[i];
924 }
925 delete [] listlayer;
926 delete [] firstmod;
927 return otrack;
928
929}
930
931//________________________________________________________________________
932
933AliITStrackV2* AliITStrackerSA::FitShortTrack(AliITStrackSA* tr,Double_t *primaryVertex,Int_t innLay){
934 //fit of the found track (short tracks, <6 points, for cosmics). A.Dainese 31.07.07
935
936
937 Int_t * firstmod = new Int_t[AliITSgeomTGeo::GetNLayers()];
938 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
939 firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1);
940 }
941
942 Int_t nclusters = tr->GetNumberOfClustersSA();
943 TObjArray** listlayer = new TObjArray*[AliITSgeomTGeo::GetNLayers()];
944 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
945 listlayer[i] = new TObjArray(0,0);
946 }
947
948 TArrayI clind0(20);
949 TArrayI clind1(20);
950 TArrayI clind2(20);
951 TArrayI clind3(20);
952 TArrayI clind4(20);
953 TArrayI clind5(20);
954
955 TArrayI mark0(20);
956 TArrayI mark1(20);
957 TArrayI mark2(20);
958 TArrayI mark3(20);
959 TArrayI mark4(20);
960 TArrayI mark5(20);
961
962
963 Int_t * nnn = new Int_t[AliITSgeomTGeo::GetNLayers()];
964 Int_t * kkk = new Int_t[AliITSgeomTGeo::GetNLayers()];
965 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {nnn[i]=0;kkk[i]=0;}
966
967 for(Int_t ncl=0;ncl<nclusters;ncl++){
968 Int_t index = tr->GetClusterIndexSA(ncl);
969 AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(index);
970 if(cl->TestBit(kSAflag)==kTRUE) cl->ResetBit(kSAflag);
971 Int_t lay = (index & 0xf0000000) >> 28;
972 if(lay==0) { listlayer[0]->AddLast(cl); clind0[nnn[0]]=index;nnn[0]++;}
973 if(lay==1) { listlayer[1]->AddLast(cl); clind1[nnn[1]]=index;nnn[1]++;}
974 if(lay==2) { listlayer[2]->AddLast(cl); clind2[nnn[2]]=index;nnn[2]++;}
975 if(lay==3) { listlayer[3]->AddLast(cl); clind3[nnn[3]]=index;nnn[3]++;}
976 if(lay==4) { listlayer[4]->AddLast(cl); clind4[nnn[4]]=index;nnn[4]++;}
977 if(lay==5) { listlayer[5]->AddLast(cl); clind5[nnn[5]]=index;nnn[5]++;}
978 }
979 delete [] nnn;
980
981 for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
982 for(Int_t ncl=0;ncl<tr->GetNumberOfMarked(nlay);ncl++){
983 Int_t mark = tr->GetClusterMark(nlay,ncl);
984 if(nlay==0) { mark0[kkk[0]]=mark;kkk[0]++;}
985 if(nlay==1) { mark1[kkk[1]]=mark;kkk[1]++;}
986 if(nlay==2) { mark2[kkk[2]]=mark;kkk[2]++;}
987 if(nlay==3) { mark3[kkk[3]]=mark;kkk[3]++;}
988 if(nlay==4) { mark4[kkk[4]]=mark;kkk[4]++;}
989 if(nlay==5) { mark5[kkk[5]]=mark;kkk[5]++;}
990
991 }
992 }
993
994 delete [] kkk;
995
996
997 Int_t * end = new Int_t[AliITSgeomTGeo::GetNLayers()];
998 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
999 if(listlayer[i]->GetEntries()==0) end[i]=1;
1000 else end[i]=listlayer[i]->GetEntries();
1001 }
1002
1003 TClonesArray* listSA = new TClonesArray("AliITStrackSA");
1004 TClonesArray &tri = *listSA;
1005 Int_t nlist=0;
1006
1007 // if(end[0]==0) end[0]=1; //for tracks with cluster on layer 0 missing
1008 for(Int_t l1=0;l1<end[0];l1++){ //loop on layer 1
1009 AliITSRecPoint* cl0 = (AliITSRecPoint*)listlayer[0]->At(l1);
1010 for(Int_t l2=0;l2<end[1];l2++){ //loop on layer 2
1011 AliITSRecPoint* cl1 = (AliITSRecPoint*)listlayer[1]->At(l2);
1012 for(Int_t l3=0;l3<end[2];l3++){ //loop on layer 3
1013 AliITSRecPoint* cl2 = (AliITSRecPoint*)listlayer[2]->At(l3);
1014 for(Int_t l4=0;l4<end[3];l4++){ //loop on layer 4
1015 AliITSRecPoint* cl3 = (AliITSRecPoint*)listlayer[3]->At(l4);
1016 for(Int_t l5=0;l5<end[4];l5++){ //loop on layer 5
1017 AliITSRecPoint* cl4 = (AliITSRecPoint*)listlayer[4]->At(l5);
1018 for(Int_t l6=0;l6<end[5];l6++){ //loop on layer 6
1019 AliITSRecPoint* cl5 = (AliITSRecPoint*)listlayer[5]->At(l6);
1020
1021
1022 Double_t x1,y1,z1,sx1,sy1,sz1;
1023 Double_t x2,y2,z2,sx2,sy2,sz2;
1024 AliITSRecPoint* p1=0;
1025 AliITSRecPoint* p2=0;
1026 Int_t index1=0,index2=0;
1027 Int_t mrk1=0,mrk2=0;
1028 if(innLay==1) {
1029 p1=cl1;
1030 p2=cl2;
1031 index1=clind1[l2];mrk1=mark1[l2];
1032 index2=clind2[l3];mrk2=mark2[l3];
1033 } else if(innLay==2) {
1034 p1=cl2;
1035 p2=cl3;
1036 index1=clind2[l3];mrk1=mark2[l3];
1037 index2=clind3[l4];mrk2=mark3[l4];
1038 } else if(innLay==3) {
1039 p1=cl3;
1040 p2=cl4;
1041 index1=clind3[l4];mrk1=mark3[l4];
1042 index2=clind4[l5];mrk2=mark4[l5];
1043 } else if(innLay==4) {
1044 p1=cl4;
1045 p2=cl5;
1046 index1=clind4[l5];mrk1=mark4[l5];
1047 index2=clind5[l6];mrk2=mark5[l6];
1048 }
1049 Int_t lay1=innLay;
1050 Int_t lay2=innLay+1;
1051 Int_t module1 = p1->GetDetectorIndex()+firstmod[innLay];
1052
1053 Int_t cln1=mrk1;
1054 Int_t cln2=mrk2;
1055 AliITSclusterTable* arr1 = (AliITSclusterTable*)GetClusterCoord(lay1,cln1);
1056 AliITSclusterTable* arr2 = (AliITSclusterTable*)GetClusterCoord(lay2,cln2);
1057 x1 = arr1->GetX();
1058 x2 = arr2->GetX();
1059 y1 = arr1->GetY();
1060 y2 = arr2->GetY();
1061 z1 = arr1->GetZ();
1062 z2 = arr2->GetZ();
1063 sx1 = arr1->GetSx();
1064 sx2 = arr2->GetSx();
1065 sy1 = arr1->GetSy();
1066 sy2 = arr2->GetSy();
1067 sz1 = arr1->GetSz();
1068 sz2 = arr2->GetSz();
1069
1070 Int_t layer,ladder,detector;
1071 AliITSgeomTGeo::GetModuleId(module1,layer,ladder,detector);
1072 Float_t yclu1 = p1->GetY();
1073 Float_t zclu1 = p1->GetZ();
1074 Double_t cv=Curvature(primaryVertex[0],primaryVertex[1],x1,y1,x2,y2);
1075 Double_t tgl2 = (z2-z1)/TMath::Sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
1076 Double_t phi2 = TMath::ATan2((y2-y1),(x2-x1));
b8ed1a92 1077 AliITStrackSA* trac = new AliITStrackSA(layer,ladder,detector,yclu1,zclu1,phi2,tgl2,cv,1);
1078
b8ed1a92 1079 if(cl5!=0) {
1080 trac->AddClusterV2(5,(clind5[l6] & 0x0fffffff)>>0);
1081 trac->AddClusterMark(5,mark5[l6]);
b8ed1a92 1082 }
1083 if(cl4!=0){
1084 trac->AddClusterV2(4,(clind4[l5] & 0x0fffffff)>>0);
1085 trac->AddClusterMark(4,mark4[l5]);
b8ed1a92 1086 }
1087 if(cl3!=0){
1088 trac->AddClusterV2(3,(clind3[l4] & 0x0fffffff)>>0);
1089 trac->AddClusterMark(3,mark3[l4]);
b8ed1a92 1090 }
1091 if(cl2!=0){
1092 trac->AddClusterV2(2,(clind2[l3] & 0x0fffffff)>>0);
1093 trac->AddClusterMark(2,mark2[l3]);
b8ed1a92 1094 }
1095 if(cl1!=0){
1096 trac->AddClusterV2(1,(clind1[l2] & 0x0fffffff)>>0);
1097 trac->AddClusterMark(1,mark1[l2]);
b8ed1a92 1098 }
1099 if(cl0!=0){
1100 trac->AddClusterV2(0,(clind0[l1] & 0x0fffffff)>>0);
1101 trac->AddClusterMark(0,mark0[l1]);
b8ed1a92 1102 }
1103
1104
1105 //fit with Kalman filter using AliITStrackerMI::RefitAt()
1106 AliITStrackMI* ot = new AliITStrackSA(*trac);
1107
1108 ot->ResetCovariance(10.);
1109 ot->ResetClusters();
1110
e50912db 1111 if(RefitAt(AliITSRecoParam::GetrInsideITSscreen(),ot,trac)){ //fit from layer 1 to layer 6
b8ed1a92 1112 AliITStrackMI *otrack2 = new AliITStrackMI(*ot);
1113 otrack2->ResetCovariance(10.);
1114 otrack2->ResetClusters();
1115 //fit from layer 6 to layer 1
e50912db 1116 if(RefitAt(AliITSRecoParam::GetrInsideSPD1(),otrack2,ot)) {
b8ed1a92 1117 fListOfTracks->AddLast(otrack2);
1118 new (tri[nlist]) AliITStrackSA(*trac);
1119 nlist++;
1120 } else {
1121 delete otrack2;
1122 }
1123
1124 }
1125
1126 delete ot;
1127 delete trac;
1128 }//end loop layer 6
1129 }//end loop layer 5
1130 }//end loop layer 4
1131 }//end loop layer 3
1132 }//end loop layer 2
1133 }//end loop layer 1
1134
1135 delete [] end;
1136
1137
1138
1139 Int_t dim=fListOfTracks->GetEntries();
1140 if(dim==0){
1141 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
1142 delete listlayer[i];
1143 }
1144 delete [] listlayer;
1145 listSA->Delete();
1146 delete listSA;
1147 delete [] firstmod;
1148 return 0;
1149 }
1150
1151 Int_t lowchi2 = FindTrackLowChiSquare(fListOfTracks,dim);
1152 AliITStrackV2* otrack =(AliITStrackV2*)fListOfTracks->At(lowchi2);
1153 AliITStrackSA* trsa = (AliITStrackSA*)listSA->At(lowchi2);
1154
1155 if(otrack==0) {
1156 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
1157 delete listlayer[i];
1158 }
1159 delete [] listlayer;
1160 listSA->Delete();
1161 delete listSA;
1162 delete [] firstmod;
1163 return 0;
1164 }
1165 Int_t * indexc = new Int_t[AliITSgeomTGeo::GetNLayers()];
1166 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) indexc[i]=0;
1167 for(Int_t nind=0;nind<otrack->GetNumberOfClusters();nind++){
1168 indexc[nind] = otrack->GetClusterIndex(nind);
1169 }
1170 Int_t labl[6][3];
1171 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
1172 if(i<otrack->GetNumberOfClusters()) {
1173 AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(indexc[i]);
1174 labl[i][0]=cl->GetLabel(0);
1175 labl[i][1]=cl->GetLabel(1);
1176 labl[i][2]=cl->GetLabel(2);
1177 } else {
1178 labl[i][0]=-1;
1179 labl[i][1]=-1;
1180 labl[i][2]=-1;
1181 }
1182 }
1183 delete [] indexc;
1184 Int_t numberofpoints=AliITSgeomTGeo::GetNLayers()-innLay;
1185 CookLabel(otrack,0.); //MI change - to see fake ratio
1186
1187 Int_t label=FindLabel(labl[0][0],labl[1][0],labl[2][0],labl[3][0],labl[4][0],labl[5][0]);
1188 Int_t lflag=0;
1189 for(Int_t i=0;i<numberofpoints;i++)
1190 if(labl[i][0]==label || labl[i][1]==label || labl[i][2]==label) lflag++;
1191
1192 if(lflag<numberofpoints) label = -label;
1193 otrack->SetLabel(label);
1194
1195 //remove clusters of found track
1196 for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
1197 for(Int_t cln=0;cln<trsa->GetNumberOfMarked(nlay);cln++){
1198 Int_t index = trsa->GetClusterMark(nlay,cln);
1199 fCluLayer[nlay]->RemoveAt(index);
1200 RemoveClusterCoord(nlay,index);
1201 fCluLayer[nlay]->Compress();
7e5bf5af 1202 }
1203 }
1204 listSA->Delete();
1205 delete listSA;
1206
cc088660 1207 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
13918578 1208 delete listlayer[i];
1209 }
c09cece6 1210 delete [] listlayer;
037efb75 1211 delete [] firstmod;
13918578 1212 return otrack;
1213
1214}
1215
bef31448 1216
4e05ab9a 1217
bef31448 1218//_______________________________________________________
7e5bf5af 1219Int_t AliITStrackerSA::SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow, AliITStrackSA* trs,Double_t /*zvertex*/,Int_t pflag){
13918578 1220 //function used to to find the clusters associated to the track
1221 Int_t nc=0;
1222 AliITSlayer &lay = fgLayers[layer];
7e5bf5af 1223 Double_t r=lay.GetR();
1224 if(pflag==1){
cfe729e0 1225 Float_t cx1,cx2,cy1,cy2;
1226 FindEquation(fPoint1[0],fPoint1[1],fPoint2[0],fPoint2[1],fPoint3[0],fPoint3[1],fCoef1,fCoef2,fCoef3);
1227 if (FindIntersection(fCoef1,fCoef2,fCoef3,-r*r,cx1,cy1,cx2,cy2)==0)
1228 return 0;
1966f03c 1229 Double_t fi1=TMath::ATan2(cy1-fPoint1[1],cx1-fPoint1[0]);
1230 Double_t fi2=TMath::ATan2(cy2-fPoint1[1],cx2-fPoint1[0]);
cfe729e0 1231 fPhiEstimate=ChoosePoint(fi1,fi2,fPhic);
1232 }
13918578 1233
7e5bf5af 1234
1235 Int_t ncl = fCluLayer[layer]->GetEntries();
1236 for (Int_t index=0; index<ncl; index++) {
00a7cc50 1237 AliITSRecPoint *c = (AliITSRecPoint*)fCluLayer[layer]->At(index);
7e5bf5af 1238 if (!c) continue;
1239 if (c->GetQ()<=0) continue;
1240
1241 AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(layer,index);
1242 Double_t phi = arr->GetPhi();
cfe729e0 1243 if (TMath::Abs(phi-fPhiEstimate)>phiwindow) continue;
494fda7c 1244
7e5bf5af 1245 Double_t lambda = arr->GetLambda();
cfe729e0 1246 if (TMath::Abs(lambda-fLambdac)>lambdawindow) continue;
1247
7e5bf5af 1248 if(trs->GetNumberOfClustersSA()==trs->GetMaxNumberOfClusters()) return 0;
1249 if(trs->GetNumberOfMarked(layer)==trs->GetMaxNMarkedPerLayer()) return 0;
1250 Int_t orind = arr->GetOrInd();
1251 trs->AddClusterSA(layer,orind);
1252 trs->AddClusterMark(layer,index);
1253
cfe729e0 1254 nc++;
1255 fLambdac=lambda;
1256 fPhiEstimate=phi;
cfe729e0 1257
7e5bf5af 1258 fPointc[0]=arr->GetX();
1259 fPointc[1]=arr->GetY();
1260
cfe729e0 1261 }
1262 return nc;
1263}
13918578 1264
bef31448 1265//________________________________________________________________
1266void AliITStrackerSA::UpdatePoints(){
1267 //update of points for the estimation of the curvature
13918578 1268
bef31448 1269 fPoint2[0]=fPoint3[0];
1270 fPoint2[1]=fPoint3[1];
1271 fPoint3[0]=fPointc[0];
1272 fPoint3[1]=fPointc[1];
13918578 1273
1274
13918578 1275}
13918578 1276
13918578 1277//___________________________________________________________________
1278Int_t AliITStrackerSA::FindEquation(Float_t x1, Float_t y1, Float_t x2, Float_t y2, Float_t x3, Float_t y3,Float_t& a, Float_t& b, Float_t& c){
1279
1280 //given (x,y) of three recpoints (in global coordinates)
1281 //returns the parameters a,b,c of circonference x*x + y*y +a*x + b*y +c
1282
1283 Float_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1);
1284 if(den==0) return 0;
1285 a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den;
1286 b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1);
1287 c = -x1*x1-y1*y1-a*x1-b*y1;
1288 return 1;
1289 }
1290//__________________________________________________________________________
1291 Int_t AliITStrackerSA::FindIntersection(Float_t a1, Float_t b1, Float_t c1, Float_t c2,Float_t& x1,Float_t& y1, Float_t& x2, Float_t& y2){
1292
1293 //Finds the intersection between the circonference of the track and the circonference centered in (0,0) represented by one layer
1294 //c2 is -rlayer*rlayer
1295
1296 if(a1==0) return 0;
3a2f227d 1297 Double_t m = c2-c1;
1298 Double_t aA = (b1*b1)/(a1*a1)+1;
1299 Double_t bB = (-2*m*b1/(a1*a1));
1300 Double_t cC = c2+(m*m)/(a1*a1);
1301 Double_t dD = bB*bB-4*aA*cC;
1302 if(dD<0) return 0;
13918578 1303
3a2f227d 1304 y1 = (-bB+TMath::Sqrt(dD))/(2*aA);
1305 y2 = (-bB-TMath::Sqrt(dD))/(2*aA);
13918578 1306 x1 = (c2-c1-b1*y1)/a1;
1307 x2 = (c2-c1-b1*y2)/a1;
1308
1309 return 1;
1310}
1311//____________________________________________________________________
1312Double_t AliITStrackerSA::Curvature(Double_t x1,Double_t y1,Double_t
1313x2,Double_t y2,Double_t x3,Double_t y3){
1314
1315 //calculates the curvature of track
1316 Double_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1);
1317 if(den==0) return 0;
1318 Double_t a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den;
1319 Double_t b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1);
1320 Double_t c = -x1*x1-y1*y1-a*x1-b*y1;
1321 Double_t xc=-a/2.;
1322
1323 if((a*a+b*b-4*c)<0) return 0;
1324 Double_t rad = TMath::Sqrt(a*a+b*b-4*c)/2.;
1325 if(rad==0) return 0;
1326
1327 if((x1>0 && y1>0 && x1<xc)) rad*=-1;
1328 if((x1<0 && y1>0 && x1<xc)) rad*=-1;
1329 // if((x1<0 && y1<0 && x1<xc)) rad*=-1;
1330 // if((x1>0 && y1<0 && x1<xc)) rad*=-1;
1331
1332 return 1/rad;
1333
1334}
7e5bf5af 1335
1336
13918578 1337//____________________________________________________________________
1338Double_t AliITStrackerSA::ChoosePoint(Double_t p1, Double_t p2, Double_t pp){
1339
1340 //Returns the point closest to pp
1341
1342 Double_t diff1 = p1-pp;
1343 Double_t diff2 = p2-pp;
1344
1345 if(TMath::Abs(diff1)<TMath::Abs(diff2)) fPhiEstimate=p1;
1346 else fPhiEstimate=p2;
1347 return fPhiEstimate;
1348
1349}
1350
1351
1352//_________________________________________________________________
7e5bf5af 1353Int_t AliITStrackerSA::FindTrackLowChiSquare(TObjArray* tracklist, Int_t dim) const {
52a9777e 1354 // returns track with lowers chi square
13918578 1355 if(dim==1){
7e5bf5af 1356 //AliITStrackV2* trk = (AliITStrackV2*)tracklist->At(0);
1357 //return trk;
1358 return 0;
13918578 1359 }
52a9777e 1360 if(dim==0) return 0;
037efb75 1361 Double_t * chi2 = new Double_t[dim];
1362 Int_t * index = new Int_t[dim];
13918578 1363 for(Int_t i=0;i<dim;i++){
1364 AliITStrackV2* trk = (AliITStrackV2*)tracklist->At(i);
1365 chi2[i]=trk->GetChi2();
1366 index[i]=i;
1367 }
1368
1369 Int_t w=0;Double_t value;
1370 Int_t lp;
1371 while(w<dim){
1372 for(Int_t j=w+1;j<dim;j++){
1373 if(chi2[w]<chi2[j]){
bef31448 1374 value=chi2[w];
1375 chi2[w]=chi2[j];
1376 chi2[j]=value;
1377 lp=index[w];
1378 index[w]=index[j];
1379 index[j]=lp;
13918578 1380 }
1381 }
1382 w++;
1383 }
52a9777e 1384 Int_t tmp = index[dim-1];
037efb75 1385 delete [] chi2;
1386 delete [] index;
52a9777e 1387 return tmp;
13918578 1388}
1389
1390//__________________________________________________________
1391Int_t AliITStrackerSA::FindLabel(Int_t l1, Int_t l2, Int_t l3, Int_t l4, Int_t l5, Int_t l6){
1392
1393 //function used to determine the track label
1394
1395 Int_t lb[6] = {l1,l2,l3,l4,l5,l6};
1396 Int_t aa[6]={1,1,1,1,1,1};
1397 Int_t ff=0;
1398 Int_t ll=0;
1399 Int_t k=0;Int_t w=0;Int_t num=6;
8b3779ef 1400 for(Int_t i=5;i>=0;i--) if(lb[i]==-1) num=i;
13918578 1401
1402 while(k<num){
1403
1404 for(Int_t i=k+1;i<num;i++){
1405
1406 if(lb[k]==lb[i] && aa[k]!=0){
1407
1408 aa[k]+=1;
1409 aa[i]=0;
1410 }
1411 }
8b3779ef 1412 k++;
13918578 1413 }
1414
1415 while(w<num){
8b3779ef 1416
13918578 1417 for(Int_t j=0;j<6;j++){
1418 if(aa[w]<aa[j]){
1419 ff=aa[w];
1420 aa[w]=aa[j];
1421 aa[j]=ff;
1422 ll=lb[w];
1423 lb[w]=lb[j];
1424 lb[j]=ll;
1425 }
1426 }
8b3779ef 1427 w++;
13918578 1428 }
8b3779ef 1429
1430 if(num<1) return -1;
1431 return lb[num-1];
13918578 1432}
1433
1434//_____________________________________________________________________________
1435Int_t AliITStrackerSA::Label(Int_t gl1, Int_t gl2, Int_t gl3, Int_t gl4, Int_t gl5, Int_t gl6,Int_t gl7, Int_t gl8, Int_t gl9, Int_t gl10,Int_t gl11,
1436Int_t gl12, Int_t gl13, Int_t gl14,Int_t gl15, Int_t gl16, Int_t gl17, Int_t gl18, Int_t numberofpoints){
1437
1438
1439 //function used to assign label to the found track. If track is fake, the label is negative
1440
1441 Int_t lb0[6] = {gl1,gl2,gl3,gl4,gl5,gl6};
1442 Int_t lb1[6] = {gl7,gl8,gl9,gl10,gl11,gl12};
1443 Int_t lb2[6] = {gl13,gl14,gl15,gl16,gl17,gl18};
1444 Int_t ll=FindLabel(lb0[0],lb0[1],lb0[2],lb0[3],lb0[4],lb0[5]);
1445 Int_t lflag=0;Int_t num=6;
1446 if(lb0[5]==-1 && lb1[5]==-1 && lb2[5]==-1) num=5;
1447
1448 for(Int_t i=0;i<num;i++){
1449 if(lb0[i]==ll || lb1[i]==ll || lb2[i]==ll) lflag+=1;
1450 }
1451
1452 if(lflag>=numberofpoints) return ll;
1453 else return -ll;
1454
1455
1456}
1457
1458//_____________________________________________________________________________
1459void AliITStrackerSA::SetWindowSizes(Int_t n, Double_t *phi, Double_t *lam){
1460 // Set sizes of the phi and lambda windows used for track finding
1461 fNloop = n;
1462 if(phi){ // user defined values
1463 fPhiWin = new Double_t[fNloop];
1464 fLambdaWin = new Double_t[fNloop];
1465 for(Int_t k=0;k<fNloop;k++){
1466 fPhiWin[k]=phi[k];
1467 fLambdaWin[k]=lam[k];
1468 }
1469 }
1470 else { // default values
627b6db6 1471
1472 Double_t phid[33] = {0.002,0.003,0.004,0.0045,0.0047,
bef31448 1473 0.005,0.0053,0.0055,
1474 0.006,0.0063,0.0065,0.007,0.0073,0.0075,0.0077,
1475 0.008,0.0083,0.0085,0.0087,0.009,0.0095,0.0097,
627b6db6 1476 0.01,0.0105,0.011,0.0115,0.012,0.0125,0.013,0.0135,0.0140,0.0145};
1477 Double_t lambdad[33] = {0.003,0.004,0.005,0.005,0.005,
1478 0.005,0.005,0.006,
1479 0.006,0.006,0.006,0.007,0.007,0.007,0.007,
1480 0.007,0.007,0.007,0.007,0.007,0.007,0.007,
1481 0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008};
bef31448 1482
627b6db6 1483 if(fNloop!=33){
1484 fNloop = 33;
13918578 1485 }
627b6db6 1486
1487
13918578 1488 fPhiWin = new Double_t[fNloop];
1489 fLambdaWin = new Double_t[fNloop];
e340bb86 1490
1491
1492
1493 Double_t factor=AliITSReconstructor::GetRecoParam()->GetFactorSAWindowSizes(); // possibility to enlarge windows for cosmics reco with large misalignments (A.Dainese)
1494 for(Int_t k=0;k<fNloop;k++) {
1495 fPhiWin[k]=phid[k]*factor;
1496 fLambdaWin[k]=lambdad[k]*factor;
13918578 1497 }
1498
1499 }
1500
1501}
7e5bf5af 1502//_______________________________________________________________________
cc088660 1503void AliITStrackerSA::GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda, Float_t &x, Float_t &y,Float_t &z,Double_t* vertex){
7e5bf5af 1504 //Returns values of phi (azimuthal) and lambda angles for a given cluster
cc088660 1505/*
7e5bf5af 1506 Double_t rot[9]; fGeom->GetRotMatrix(module,rot);
1507 Int_t lay,lad,det; fGeom->GetModuleId(module,lay,lad,det);
1508 Float_t tx,ty,tz; fGeom->GetTrans(lay,lad,det,tx,ty,tz);
1509
1510 Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi();
1511 Double_t phi1=TMath::Pi()/2+alpha;
1512 if (lay==1) phi1+=TMath::Pi();
1513
1514 Float_t cp=TMath::Cos(phi1), sp=TMath::Sin(phi1);
1515 Float_t r=tx*cp+ty*sp;
1516
cc088660 1517 xyz= r*cp - cl->GetY()*sp;
7e5bf5af 1518 y= r*sp + cl->GetY()*cp;
1519 z=cl->GetZ();
cc088660 1520*/
1521 Float_t xyz[3];
1522 cl->GetGlobalXYZ(xyz);
1523 x=xyz[0];
1524 y=xyz[1];
1525 z=xyz[2];
1526
1966f03c 1527 phi=TMath::ATan2(y-vertex[1],x-vertex[0]);
7e5bf5af 1528 lambda=TMath::ATan2(z-vertex[2],TMath::Sqrt((x-vertex[0])*(x-vertex[0])+(y-vertex[1])*(y-vertex[1])));
1529}
13918578 1530
7e5bf5af 1531//________________________________________________________________________
cc088660 1532void AliITStrackerSA::GetCoorErrors(AliITSRecPoint* cl,Float_t &sx,Float_t &sy, Float_t &sz){
7e5bf5af 1533
cc088660 1534 //returns sigmax, y, z of cluster in global coordinates
1535/*
7e5bf5af 1536 Double_t rot[9]; fGeom->GetRotMatrix(module,rot);
cc088660 1537 Int_t lay,lad,det;
1538 AliITSgeomTGeo::GetModuleId(module,lay,lad,det);
7e5bf5af 1539
1540 Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi();
1541 Double_t phi=TMath::Pi()/2+alpha;
1542 if (lay==1) phi+=TMath::Pi();
1543
1544 Float_t cp=TMath::Cos(phi), sp=TMath::Sin(phi);
cc088660 1545*/
1546 Float_t covm[6];
1547 cl->GetGlobalCov(covm);
1548 sx=TMath::Sqrt(covm[0]);
1549 sy=TMath::Sqrt(covm[3]);
1550 sz=TMath::Sqrt(covm[5]);
1551/*
7e5bf5af 1552 sx = TMath::Sqrt(sp*sp*cl->GetSigmaY2());
1553 sy = TMath::Sqrt(cp*cp*cl->GetSigmaY2());
1554 sz = TMath::Sqrt(cl->GetSigmaZ2());
cc088660 1555*/
7e5bf5af 1556}
cc088660 1557