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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
2755f080 387 Int_t minNPoints = (fSixPoints ? AliITSgeomTGeo::GetNLayers() : AliITSgeomTGeo::GetNLayers()-1);
388 Bool_t jumpy = kFALSE;
389 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
390 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i)) {
391 minNPoints--;
392 jumpy = kTRUE;
393 }
394 }
7e5bf5af 395
396 Int_t ntrack=0;
397 //loop on the different windows
398 for(Int_t nloop=0;nloop<fNloop;nloop++){
399 for(Int_t ncl=0;ncl<fCluLayer[0]->GetEntries();ncl++){ //loop starting from layer 0
400
401 ResetForFinding();
402 Int_t pflag=0;
403
00a7cc50 404 AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[0]->At(ncl);
7e5bf5af 405
406 if(!cl) continue;
407
408
409 if (cl->GetQ()<=0) continue;
410
411 AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(0,ncl);
412 fPhic = arr->GetPhi();
413 fLambdac = arr->GetLambda();
414 if (TMath::Abs(fLambdac)>0.26*TMath::Pi()) continue;
415 fPhiEstimate = fPhic;
416 AliITStrackSA* trs = new AliITStrackSA();
417 fPoint1[0]=primaryVertex[0];
418 fPoint1[1]=primaryVertex[1];
419
420
421 fPoint2[0]=arr->GetX();
422 fPoint2[1]=arr->GetY();
cc088660 423 Int_t * nn = new Int_t[AliITSgeomTGeo::GetNLayers()];//counter for clusters on each layer
424 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){ nn[i]=0;}
7e5bf5af 425 nn[0] = SearchClusters(0,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
426
427 nn[1] = SearchClusters(1,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
bef31448 428 if(nn[1]>0){
429 pflag=1;
430 fPoint3[0] = fPointc[0];
431 fPoint3[1] = fPointc[1];
432 }
cfe729e0 433 nn[2] = SearchClusters(2,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
bef31448 434 if(nn[1]==0 && nn[2]==0) pflag=0;
435 if(nn[2]!=0 && nn[1]!=0){ pflag=1; UpdatePoints();}
436 if(nn[2]!=0 && nn[1]==0){
437 pflag=1;
438 fPoint3[0]=fPointc[0];
439 fPoint3[1]=fPointc[1];
440 }
13918578 441
cfe729e0 442 nn[3] = SearchClusters(3,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
bef31448 443 pflag=1;
444 if(nn[3]!=0) UpdatePoints();
cfe729e0 445 nn[4] = SearchClusters(4,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
bef31448 446 pflag=1;
447 if(nn[4]!=0) UpdatePoints();
cfe729e0 448 nn[5] = SearchClusters(5,fPhiWin[nloop],fLambdaWin[nloop],trs,primaryVertex[2],pflag);
bef31448 449
450
451 Int_t layOK=0;
2755f080 452 //check of the candidate track
453 for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers();nnp++) {
bef31448 454 if(nn[nnp]!=0) layOK+=1;
455 }
7e5bf5af 456
2755f080 457 if(layOK>=minNPoints){
458 AliITStrackV2* tr2 = 0;
459 if(!jumpy) {
460 tr2 = FitTrack(trs,primaryVertex);
461 } else {
462 tr2 = FitJumpyTrack(trs,primaryVertex);
463 }
464 if(!tr2) continue;
7e5bf5af 465
bef31448 466 AliESDtrack outtrack;
467 outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin);
468 event->AddTrack(&outtrack);
bef31448 469 ntrack++;
bef31448 470 }
7e5bf5af 471
472
bef31448 473 delete trs;
2257f27e 474 delete[] nn;
627b6db6 475
7e5bf5af 476 }//end loop on clusters of layer1
627b6db6 477
7e5bf5af 478 //end loop2
479 }
2755f080 480
481 minNPoints--;
482
7e5bf5af 483 //if 5/6 points are required, second loop starting
b8ed1a92 484 //from second layer (SPD2), to find tracks with point of
485 //layer 1 missing
486 if(!fSixPoints) {
487 //printf("looking from SPD2\n");
7e5bf5af 488 // counter for clusters on each layer
cc088660 489 Int_t * nn = new Int_t[AliITSgeomTGeo::GetNLayers()-1];
7e5bf5af 490 for(Int_t nloop=0;nloop<fNloop;nloop++){
491 Int_t ncl2=fCluLayer[1]->GetEntries();
492 while(ncl2--){ //loop starting from layer 2
493 ResetForFinding();
494 Int_t pflag=0;
00a7cc50 495 AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[1]->At(ncl2);
7e5bf5af 496
497 if(!cl) continue;
498 AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(1,ncl2);
499 fPhic = arr->GetPhi();
500 fLambdac = arr->GetLambda();
501 fPhiEstimate = fPhic;
502
503 AliITStrackSA* trs = new AliITStrackSA();
504 fPoint1[0]=primaryVertex[0];
505 fPoint1[1]=primaryVertex[1];
506
507 fPoint2[0]=arr->GetX();
508 fPoint2[1]=arr->GetY();
cc088660 509 for(Int_t kk=0;kk<AliITSgeomTGeo::GetNLayers()-1;kk++)nn[kk] = 0;
7e5bf5af 510 nn[0] = SearchClusters(1,fPhiWin[nloop],fLambdaWin[nloop],
511 trs,primaryVertex[2],pflag);
512 nn[1] = SearchClusters(2,fPhiWin[nloop],fLambdaWin[nloop],
513 trs,primaryVertex[2],pflag);
514 if(nn[1]!=0){
515 pflag=1;
516 fPoint3[0]=fPointc[0];
517 fPoint3[1]=fPointc[1];
518 }
519 nn[2]= SearchClusters(3,fPhiWin[nloop],fLambdaWin[nloop],
520 trs,primaryVertex[2],pflag);
521 if(nn[2]!=0){
522 pflag=1;
523 UpdatePoints();
524 }
525 nn[3]= SearchClusters(4,fPhiWin[nloop],fLambdaWin[nloop],
526 trs,primaryVertex[2],pflag);
527 if(nn[3]!=0){
528 pflag=1;
529 UpdatePoints();
530 }
531 nn[4]=SearchClusters(5,fPhiWin[nloop],fLambdaWin[nloop],
532 trs,primaryVertex[2],pflag);
533
534 Int_t fl=0;
cc088660 535 for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-1;nnp++){
7e5bf5af 536 if(nn[nnp]!=0) fl+=1;
537 }
2755f080 538 if(fl>=minNPoints){ // 5/6
539 AliITStrackV2* tr2 = 0;
540 if(!jumpy) {
541 tr2 = FitTrack(trs,primaryVertex);
542 } else {
543 tr2 = FitJumpyTrack(trs,primaryVertex);
7e5bf5af 544 }
2755f080 545 if(!tr2) continue;
7e5bf5af 546
547 AliESDtrack outtrack;
548 outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin);
549 event->AddTrack(&outtrack);
550 ntrack++;
551
552 }
b8ed1a92 553
bef31448 554 delete trs;
555 }//end loop on clusters of layer2
7e5bf5af 556 }
557
2755f080 558 delete [] nn;
559 } //end opt="5/6"
b8ed1a92 560
561
562
563 // search for tracks starting from SPD2, SDD1, SDD2, SSD2
564 // for cosmics (A. Dainese 31.07.07)
565 if(fOuterStartLayer>0) {
566 for(Int_t innLay=1; innLay<=fOuterStartLayer; innLay++) {
2755f080 567 //printf("Searching from layer %d outward\n",innLay);
568 minNPoints=AliITSgeomTGeo::GetNLayers()-innLay;
569 for(Int_t i=innLay;i<AliITSgeomTGeo::GetNLayers();i++)
570 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(i))
571 minNPoints--;
b8ed1a92 572 // counter for clusters on each layer
573 Int_t * nn = new Int_t[AliITSgeomTGeo::GetNLayers()-innLay];
574 for(Int_t nloop=0;nloop<fNloop;nloop++){
575 Int_t nclInnLay=fCluLayer[innLay]->GetEntries();
576 while(nclInnLay--){ //loop starting from layer innLay
577 ResetForFinding();
578 Int_t pflag=0;
579 AliITSRecPoint* cl = (AliITSRecPoint*)fCluLayer[innLay]->At(nclInnLay);
580
581 if(!cl) continue;
582 AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(innLay,nclInnLay);
583 fPhic = arr->GetPhi();
584 fLambdac = arr->GetLambda();
585 fPhiEstimate = fPhic;
586
587 AliITStrackSA* trs = new AliITStrackSA();
588 fPoint1[0]=primaryVertex[0];
589 fPoint1[1]=primaryVertex[1];
590 fPoint2[0]=arr->GetX();
591 fPoint2[1]=arr->GetY();
592
593 Int_t kk;
594 for(kk=0;kk<AliITSgeomTGeo::GetNLayers()-innLay;kk++) nn[kk] = 0;
595
596 kk=0;
597 nn[kk] = SearchClusters(innLay,fPhiWin[nloop],fLambdaWin[nloop],
598 trs,primaryVertex[2],pflag);
599 for(Int_t nextLay=innLay+1; nextLay<AliITSgeomTGeo::GetNLayers(); nextLay++) {
600 kk++;
601 nn[kk] = SearchClusters(nextLay,fPhiWin[nloop],fLambdaWin[nloop],
602 trs,primaryVertex[2],pflag);
603 if(nn[kk]!=0){
604 pflag=1;
605 if(kk==1) {
606 fPoint3[0]=fPointc[0];
607 fPoint3[1]=fPointc[1];
608 } else {
609 UpdatePoints();
610 }
611 }
612 }
613
614 Int_t fl=0;
615 for(Int_t nnp=0;nnp<AliITSgeomTGeo::GetNLayers()-innLay;nnp++){
616 if(nn[nnp]!=0) fl+=1;
617 }
2755f080 618 if(fl>=minNPoints){
619 AliITStrackV2* tr2 = 0;
620 if(!jumpy) {
621 tr2 = FitShortTrack(trs,primaryVertex,innLay);
622 } else {
623 tr2 = FitJumpyTrack(trs,primaryVertex);
b8ed1a92 624 }
2755f080 625 if(!tr2) continue;
626
b8ed1a92 627
628 AliESDtrack outtrack;
629 outtrack.UpdateTrackParams(tr2,AliESDtrack::kITSin);
630 event->AddTrack(&outtrack);
631 ntrack++;
632
633 }
634
635 delete trs;
636 }//end loop on clusters of innLay
637 } //end loop on window sizes
638
639 delete [] nn;
640 } //end loop on innLay
641 } //end if(fOuterStartLayer>0)
642
7e5bf5af 643
bef31448 644 delete [] firstmod;
bef31448 645 Info("FindTracks","Number of found tracks: %d",event->GetNumberOfTracks());
2257f27e 646 return 0;
bef31448 647
648}
7e5bf5af 649
650
13918578 651//________________________________________________________________________
652
7e5bf5af 653AliITStrackV2* AliITStrackerSA::FitTrack(AliITStrackSA* tr,Double_t *primaryVertex){
13918578 654 //fit of the found track
655
13918578 656
cc088660 657 Int_t * firstmod = new Int_t[AliITSgeomTGeo::GetNLayers()];
658 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
659 firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1);
13918578 660 }
15dd636f 661
13918578 662 Int_t nclusters = tr->GetNumberOfClustersSA();
cc088660 663 TObjArray** listlayer = new TObjArray*[AliITSgeomTGeo::GetNLayers()];
664 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
13918578 665 listlayer[i] = new TObjArray(0,0);
666 }
667
668 TArrayI clind0(20);
669 TArrayI clind1(20);
670 TArrayI clind2(20);
671 TArrayI clind3(20);
672 TArrayI clind4(20);
673 TArrayI clind5(20);
674
7e5bf5af 675 TArrayI mark0(20);
676 TArrayI mark1(20);
677 TArrayI mark2(20);
678 TArrayI mark3(20);
679 TArrayI mark4(20);
680 TArrayI mark5(20);
681
682
cc088660 683 Int_t * nnn = new Int_t[AliITSgeomTGeo::GetNLayers()];
684 Int_t * kkk = new Int_t[AliITSgeomTGeo::GetNLayers()];
685 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {nnn[i]=0;kkk[i]=0;}
13918578 686
687 for(Int_t ncl=0;ncl<nclusters;ncl++){
7e5bf5af 688 Int_t index = tr->GetClusterIndexSA(ncl);
00a7cc50 689 AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(index);
627b6db6 690 if(cl->TestBit(kSAflag)==kTRUE) cl->ResetBit(kSAflag);
13918578 691 Int_t lay = (index & 0xf0000000) >> 28;
692 if(lay==0) { listlayer[0]->AddLast(cl); clind0[nnn[0]]=index;nnn[0]++;}
693 if(lay==1) { listlayer[1]->AddLast(cl); clind1[nnn[1]]=index;nnn[1]++;}
694 if(lay==2) { listlayer[2]->AddLast(cl); clind2[nnn[2]]=index;nnn[2]++;}
695 if(lay==3) { listlayer[3]->AddLast(cl); clind3[nnn[3]]=index;nnn[3]++;}
696 if(lay==4) { listlayer[4]->AddLast(cl); clind4[nnn[4]]=index;nnn[4]++;}
697 if(lay==5) { listlayer[5]->AddLast(cl); clind5[nnn[5]]=index;nnn[5]++;}
698 }
037efb75 699 delete [] nnn;
13918578 700
cc088660 701 for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
7e5bf5af 702 for(Int_t ncl=0;ncl<tr->GetNumberOfMarked(nlay);ncl++){
703 Int_t mark = tr->GetClusterMark(nlay,ncl);
704 if(nlay==0) { mark0[kkk[0]]=mark;kkk[0]++;}
705 if(nlay==1) { mark1[kkk[1]]=mark;kkk[1]++;}
706 if(nlay==2) { mark2[kkk[2]]=mark;kkk[2]++;}
707 if(nlay==3) { mark3[kkk[3]]=mark;kkk[3]++;}
708 if(nlay==4) { mark4[kkk[4]]=mark;kkk[4]++;}
709 if(nlay==5) { mark5[kkk[5]]=mark;kkk[5]++;}
710
711 }
712 }
713
714 delete [] kkk;
715
13918578 716
cc088660 717 Int_t * end = new Int_t[AliITSgeomTGeo::GetNLayers()];
718 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
13918578 719 if(listlayer[i]->GetEntries()==0) end[i]=1;
720 else end[i]=listlayer[i]->GetEntries();
721 }
722
7e5bf5af 723 TClonesArray* listSA = new TClonesArray("AliITStrackSA");
724 TClonesArray &tri = *listSA;
725 Int_t nlist=0;
726
727 if(end[0]==0) end[0]=1; //for tracks with cluster on layer 0 missing
2755f080 728 for(Int_t l0=0;l0<end[0];l0++){ //loop on layer 1
729 AliITSRecPoint* cl0 = (AliITSRecPoint*)listlayer[0]->At(l0);
13918578 730 Double_t x1,y1,z1,sx1,sy1,sz1;
731 Double_t x2,y2,z2,sx2,sy2,sz2;
00a7cc50 732 AliITSRecPoint* p1=0;
733 AliITSRecPoint* p2=0;
2755f080 734 Int_t index1=clind0[l0];
bef31448 735 Int_t index2=0;
2755f080 736 Int_t mrk1 = mark0[l0];
7e5bf5af 737 Int_t mrk2 = 0;
738 Int_t lay1=0;
739 Int_t lay2=1;
740 Int_t module1=-1;
2755f080 741 for(Int_t l1=0;l1<end[1];l1++){ //loop on layer 2
742 AliITSRecPoint* cl1 = (AliITSRecPoint*)listlayer[1]->At(l1);
743 index2=clind1[l1];
744 mrk2 = mark1[l1];
745 for(Int_t l2=0;l2<end[2];l2++){ //loop on layer 3
746 AliITSRecPoint* cl2 = (AliITSRecPoint*)listlayer[2]->At(l2);
bef31448 747
748 if(cl0==0 && cl1!=0) {
bef31448 749 p1=cl1;
b8ed1a92 750 p2=cl2;
2755f080 751 index1=clind1[l1];mrk1=mark1[l1];
752 index2=clind2[l2];mrk2=mark2[l2];
b8ed1a92 753 lay1=1;
754 lay2=2;
7e5bf5af 755 module1 = p1->GetDetectorIndex()+firstmod[1];
bef31448 756 }
757 if(cl0!=0 && cl1==0){
758 p1=cl0;
2755f080 759 p2=cl2;index2=clind2[l2];mrk2=mark2[l2];
b8ed1a92 760 lay1=0;
761 lay2=2;
7e5bf5af 762 module1 = p1->GetDetectorIndex()+firstmod[0];
bef31448 763 }
764 if(cl0!=0 && cl1!=0){
765 p1=cl0;
766 p2=cl1;
b8ed1a92 767 lay1=0;
768 lay2=1;
7e5bf5af 769 module1 = p1->GetDetectorIndex()+firstmod[0];
bef31448 770 }
7e5bf5af 771
772 Int_t cln1=mrk1;
773 Int_t cln2=mrk2;
b8ed1a92 774 AliITSclusterTable* arr1 = (AliITSclusterTable*)GetClusterCoord(lay1,cln1);
775 AliITSclusterTable* arr2 = (AliITSclusterTable*)GetClusterCoord(lay2,cln2);
776 x1 = arr1->GetX();
777 x2 = arr2->GetX();
778 y1 = arr1->GetY();
779 y2 = arr2->GetY();
780 z1 = arr1->GetZ();
781 z2 = arr2->GetZ();
782 sx1 = arr1->GetSx();
783 sx2 = arr2->GetSx();
784 sy1 = arr1->GetSy();
785 sy2 = arr2->GetSy();
786 sz1 = arr1->GetSz();
787 sz2 = arr2->GetSz();
7e5bf5af 788
13918578 789 Int_t layer,ladder,detector;
cc088660 790 AliITSgeomTGeo::GetModuleId(module1,layer,ladder,detector);
bef31448 791 Float_t yclu1 = p1->GetY();
792 Float_t zclu1 = p1->GetZ();
b8ed1a92 793 Double_t cv=Curvature(primaryVertex[0],primaryVertex[1],x1,y1,x2,y2);
7e5bf5af 794 Double_t tgl2 = (z2-z1)/TMath::Sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
795 Double_t phi2 = TMath::ATan2((y2-y1),(x2-x1));
796
2755f080 797 for(Int_t l3=0;l3<end[3];l3++){ //loop on layer 4
798 AliITSRecPoint* cl3 = (AliITSRecPoint*)listlayer[3]->At(l3);
799 for(Int_t l4=0;l4<end[4];l4++){ //loop on layer 5
800 AliITSRecPoint* cl4 = (AliITSRecPoint*)listlayer[4]->At(l4);
801 for(Int_t l5=0;l5<end[5];l5++){ //loop on layer 6
802 AliITSRecPoint* cl5 = (AliITSRecPoint*)listlayer[5]->At(l5);
cc088660 803 AliITStrackSA* trac = new AliITStrackSA(layer,ladder,detector,yclu1,zclu1,phi2,tgl2,cv,1);
bef31448 804
7e5bf5af 805 if(cl5!=0) {
2755f080 806 trac->AddClusterV2(5,(clind5[l5] & 0x0fffffff)>>0);
807 trac->AddClusterMark(5,mark5[l5]);
7e5bf5af 808 }
809 if(cl4!=0){
2755f080 810 trac->AddClusterV2(4,(clind4[l4] & 0x0fffffff)>>0);
811 trac->AddClusterMark(4,mark4[l4]);
7e5bf5af 812 }
813 if(cl3!=0){
2755f080 814 trac->AddClusterV2(3,(clind3[l3] & 0x0fffffff)>>0);
815 trac->AddClusterMark(3,mark3[l3]);
7e5bf5af 816 }
817 if(cl2!=0){
2755f080 818 trac->AddClusterV2(2,(clind2[l2] & 0x0fffffff)>>0);
819 trac->AddClusterMark(2,mark2[l2]);
7e5bf5af 820 }
821 if(cl1!=0){
2755f080 822 trac->AddClusterV2(1,(clind1[l1] & 0x0fffffff)>>0);
823 trac->AddClusterMark(1,mark1[l1]);
7e5bf5af 824 }
825 if(cl0!=0){
2755f080 826 trac->AddClusterV2(0,(clind0[l0] & 0x0fffffff)>>0);
827 trac->AddClusterMark(0,mark0[l0]);
7e5bf5af 828 }
e43c066c 829 //fit with Kalman filter using AliITStrackerMI::RefitAt()
bef31448 830
7e5bf5af 831
15dd636f 832 AliITStrackMI* ot = new AliITStrackSA(*trac);
bef31448 833
6c94f330 834 ot->ResetCovariance(10.);
bef31448 835 ot->ResetClusters();
836
e50912db 837 if(RefitAt(AliITSRecoParam::GetrInsideITSscreen(),ot,trac)){ //fit from layer 1 to layer 6
15dd636f 838 AliITStrackMI *otrack2 = new AliITStrackMI(*ot);
6c94f330 839 otrack2->ResetCovariance(10.);
bef31448 840 otrack2->ResetClusters();
841 //fit from layer 6 to layer 1
e50912db 842 if(RefitAt(AliITSRecoParam::GetrInsideSPD1(),otrack2,ot)) {
73f446a0 843 fListOfTracks->AddLast(otrack2);
7e5bf5af 844 new (tri[nlist]) AliITStrackSA(*trac);
845 nlist++;
73f446a0 846 } else {
847 delete otrack2;
848 }
bef31448 849
850 }
851
852 delete ot;
853 delete trac;
854 }//end loop layer 6
855 }//end loop layer 5
b8ed1a92 856 }//end loop layer 4
13918578 857 }//end loop layer 3
bef31448 858 }//end loop layer 2
13918578 859 }//end loop layer 1
860
037efb75 861 delete [] end;
862
7e5bf5af 863
864
4e05ab9a 865 Int_t dim=fListOfTracks->GetEntries();
13918578 866 if(dim==0){
cc088660 867 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
13918578 868 delete listlayer[i];
869 }
c09cece6 870 delete [] listlayer;
00a7cc50 871 listSA->Delete();
872 delete listSA;
73f446a0 873 delete [] firstmod;
13918578 874 return 0;
875 }
876
7e5bf5af 877 Int_t lowchi2 = FindTrackLowChiSquare(fListOfTracks,dim);
878 AliITStrackV2* otrack =(AliITStrackV2*)fListOfTracks->At(lowchi2);
879 AliITStrackSA* trsa = (AliITStrackSA*)listSA->At(lowchi2);
880
73f446a0 881 if(otrack==0) {
cc088660 882 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
73f446a0 883 delete listlayer[i];
884 }
c09cece6 885 delete [] listlayer;
00a7cc50 886 listSA->Delete();
887 delete listSA;
73f446a0 888 delete [] firstmod;
889 return 0;
890 }
cc088660 891 Int_t * indexc = new Int_t[AliITSgeomTGeo::GetNLayers()];
892 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) indexc[i]=0;
13918578 893 for(Int_t nind=0;nind<otrack->GetNumberOfClusters();nind++){
894 indexc[nind] = otrack->GetClusterIndex(nind);
895 }
00a7cc50 896 AliITSRecPoint* cl0 = (AliITSRecPoint*)GetCluster(indexc[0]);
897 AliITSRecPoint* cl1 = (AliITSRecPoint*)GetCluster(indexc[1]);
898 AliITSRecPoint* cl2 = (AliITSRecPoint*)GetCluster(indexc[2]);
899 AliITSRecPoint* cl3 = (AliITSRecPoint*)GetCluster(indexc[3]);
900 AliITSRecPoint* cl4 = (AliITSRecPoint*)GetCluster(indexc[4]);
13918578 901 Int_t labl[3]={-1,-1,-1};
cc088660 902 if(otrack->GetNumberOfClusters()==AliITSgeomTGeo::GetNLayers()){
00a7cc50 903 AliITSRecPoint* cl5 = (AliITSRecPoint*)GetCluster(indexc[5]);
13918578 904 labl[0]=cl5->GetLabel(0);
905 labl[1]=cl5->GetLabel(1);
906 labl[2]=cl5->GetLabel(2);
907 }
037efb75 908 delete [] indexc;
cc088660 909 if(otrack->GetNumberOfClusters()==(AliITSgeomTGeo::GetNLayers()-1)){
13918578 910 labl[0]=-1;
911 labl[1]=-1;
912 labl[2]=-1;
913 }
2755f080 914 Int_t minNPoints;
915 if(fSixPoints) minNPoints=6;
916 else minNPoints=5;
e43c066c 917 CookLabel(otrack,0.); //MI change - to see fake ratio
13918578 918 Int_t label = Label(cl0->GetLabel(0),cl1->GetLabel(0),
bef31448 919 cl2->GetLabel(0),cl3->GetLabel(0),
920 cl4->GetLabel(0),labl[0],
921 cl0->GetLabel(1),cl1->GetLabel(1),
922 cl2->GetLabel(1),cl3->GetLabel(1),
923 cl4->GetLabel(1),labl[1],
924 cl0->GetLabel(2),cl1->GetLabel(2),
925 cl2->GetLabel(2),cl3->GetLabel(2),
2755f080 926 cl4->GetLabel(2),labl[2],minNPoints);
13918578 927
928 otrack->SetLabel(label);
7e5bf5af 929 //remove clusters of found track
930
cc088660 931 for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
7e5bf5af 932 for(Int_t cln=0;cln<trsa->GetNumberOfMarked(nlay);cln++){
933 Int_t index = trsa->GetClusterMark(nlay,cln);
934 fCluLayer[nlay]->RemoveAt(index);
935 RemoveClusterCoord(nlay,index);
936 fCluLayer[nlay]->Compress();
b8ed1a92 937 }
938 }
939 listSA->Delete();
940 delete listSA;
941
942 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
943 delete listlayer[i];
944 }
945 delete [] listlayer;
946 delete [] firstmod;
947 return otrack;
948
949}
950
951//________________________________________________________________________
952
953AliITStrackV2* AliITStrackerSA::FitShortTrack(AliITStrackSA* tr,Double_t *primaryVertex,Int_t innLay){
954 //fit of the found track (short tracks, <6 points, for cosmics). A.Dainese 31.07.07
955
956
957 Int_t * firstmod = new Int_t[AliITSgeomTGeo::GetNLayers()];
958 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
959 firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1);
960 }
961
962 Int_t nclusters = tr->GetNumberOfClustersSA();
963 TObjArray** listlayer = new TObjArray*[AliITSgeomTGeo::GetNLayers()];
964 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
965 listlayer[i] = new TObjArray(0,0);
966 }
967
968 TArrayI clind0(20);
969 TArrayI clind1(20);
970 TArrayI clind2(20);
971 TArrayI clind3(20);
972 TArrayI clind4(20);
973 TArrayI clind5(20);
974
975 TArrayI mark0(20);
976 TArrayI mark1(20);
977 TArrayI mark2(20);
978 TArrayI mark3(20);
979 TArrayI mark4(20);
980 TArrayI mark5(20);
981
982
983 Int_t * nnn = new Int_t[AliITSgeomTGeo::GetNLayers()];
984 Int_t * kkk = new Int_t[AliITSgeomTGeo::GetNLayers()];
985 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {nnn[i]=0;kkk[i]=0;}
986
987 for(Int_t ncl=0;ncl<nclusters;ncl++){
988 Int_t index = tr->GetClusterIndexSA(ncl);
989 AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(index);
990 if(cl->TestBit(kSAflag)==kTRUE) cl->ResetBit(kSAflag);
991 Int_t lay = (index & 0xf0000000) >> 28;
992 if(lay==0) { listlayer[0]->AddLast(cl); clind0[nnn[0]]=index;nnn[0]++;}
993 if(lay==1) { listlayer[1]->AddLast(cl); clind1[nnn[1]]=index;nnn[1]++;}
994 if(lay==2) { listlayer[2]->AddLast(cl); clind2[nnn[2]]=index;nnn[2]++;}
995 if(lay==3) { listlayer[3]->AddLast(cl); clind3[nnn[3]]=index;nnn[3]++;}
996 if(lay==4) { listlayer[4]->AddLast(cl); clind4[nnn[4]]=index;nnn[4]++;}
997 if(lay==5) { listlayer[5]->AddLast(cl); clind5[nnn[5]]=index;nnn[5]++;}
998 }
999 delete [] nnn;
1000
1001 for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
1002 for(Int_t ncl=0;ncl<tr->GetNumberOfMarked(nlay);ncl++){
1003 Int_t mark = tr->GetClusterMark(nlay,ncl);
1004 if(nlay==0) { mark0[kkk[0]]=mark;kkk[0]++;}
1005 if(nlay==1) { mark1[kkk[1]]=mark;kkk[1]++;}
1006 if(nlay==2) { mark2[kkk[2]]=mark;kkk[2]++;}
1007 if(nlay==3) { mark3[kkk[3]]=mark;kkk[3]++;}
1008 if(nlay==4) { mark4[kkk[4]]=mark;kkk[4]++;}
1009 if(nlay==5) { mark5[kkk[5]]=mark;kkk[5]++;}
1010
1011 }
1012 }
1013
1014 delete [] kkk;
1015
1016
1017 Int_t * end = new Int_t[AliITSgeomTGeo::GetNLayers()];
1018 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
1019 if(listlayer[i]->GetEntries()==0) end[i]=1;
1020 else end[i]=listlayer[i]->GetEntries();
1021 }
1022
1023 TClonesArray* listSA = new TClonesArray("AliITStrackSA");
1024 TClonesArray &tri = *listSA;
1025 Int_t nlist=0;
1026
2755f080 1027 for(Int_t l0=0;l0<end[0];l0++){ //loop on layer 1
1028 AliITSRecPoint* cl0 = (AliITSRecPoint*)listlayer[0]->At(l0);
1029 for(Int_t l1=0;l1<end[1];l1++){ //loop on layer 2
1030 AliITSRecPoint* cl1 = (AliITSRecPoint*)listlayer[1]->At(l1);
1031 for(Int_t l2=0;l2<end[2];l2++){ //loop on layer 3
1032 AliITSRecPoint* cl2 = (AliITSRecPoint*)listlayer[2]->At(l2);
1033 for(Int_t l3=0;l3<end[3];l3++){ //loop on layer 4
1034 AliITSRecPoint* cl3 = (AliITSRecPoint*)listlayer[3]->At(l3);
1035 for(Int_t l4=0;l4<end[4];l4++){ //loop on layer 5
1036 AliITSRecPoint* cl4 = (AliITSRecPoint*)listlayer[4]->At(l4);
1037 for(Int_t l5=0;l5<end[5];l5++){ //loop on layer 6
1038 AliITSRecPoint* cl5 = (AliITSRecPoint*)listlayer[5]->At(l5);
b8ed1a92 1039
1040
1041 Double_t x1,y1,z1,sx1,sy1,sz1;
1042 Double_t x2,y2,z2,sx2,sy2,sz2;
1043 AliITSRecPoint* p1=0;
1044 AliITSRecPoint* p2=0;
1045 Int_t index1=0,index2=0;
1046 Int_t mrk1=0,mrk2=0;
2755f080 1047
1048 switch(innLay) {
1049 case 1:
b8ed1a92 1050 p1=cl1;
1051 p2=cl2;
2755f080 1052 index1=clind1[l1];mrk1=mark1[l1];
1053 index2=clind2[l2];mrk2=mark2[l2];
1054 break;
1055 case 2:
b8ed1a92 1056 p1=cl2;
1057 p2=cl3;
2755f080 1058 index1=clind2[l2];mrk1=mark2[l2];
1059 index2=clind3[l3];mrk2=mark3[l3];
1060 break;
1061 case 3:
b8ed1a92 1062 p1=cl3;
1063 p2=cl4;
2755f080 1064 index1=clind3[l3];mrk1=mark3[l3];
1065 index2=clind4[l4];mrk2=mark4[l4];
1066 break;
1067 case 4:
b8ed1a92 1068 p1=cl4;
1069 p2=cl5;
2755f080 1070 index1=clind4[l4];mrk1=mark4[l4];
1071 index2=clind5[l5];mrk2=mark5[l5];
1072 break;
b8ed1a92 1073 }
1074 Int_t lay1=innLay;
1075 Int_t lay2=innLay+1;
1076 Int_t module1 = p1->GetDetectorIndex()+firstmod[innLay];
1077
1078 Int_t cln1=mrk1;
1079 Int_t cln2=mrk2;
1080 AliITSclusterTable* arr1 = (AliITSclusterTable*)GetClusterCoord(lay1,cln1);
1081 AliITSclusterTable* arr2 = (AliITSclusterTable*)GetClusterCoord(lay2,cln2);
1082 x1 = arr1->GetX();
1083 x2 = arr2->GetX();
1084 y1 = arr1->GetY();
1085 y2 = arr2->GetY();
1086 z1 = arr1->GetZ();
1087 z2 = arr2->GetZ();
1088 sx1 = arr1->GetSx();
1089 sx2 = arr2->GetSx();
1090 sy1 = arr1->GetSy();
1091 sy2 = arr2->GetSy();
1092 sz1 = arr1->GetSz();
1093 sz2 = arr2->GetSz();
1094
1095 Int_t layer,ladder,detector;
1096 AliITSgeomTGeo::GetModuleId(module1,layer,ladder,detector);
1097 Float_t yclu1 = p1->GetY();
1098 Float_t zclu1 = p1->GetZ();
1099 Double_t cv=Curvature(primaryVertex[0],primaryVertex[1],x1,y1,x2,y2);
1100 Double_t tgl2 = (z2-z1)/TMath::Sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
1101 Double_t phi2 = TMath::ATan2((y2-y1),(x2-x1));
b8ed1a92 1102 AliITStrackSA* trac = new AliITStrackSA(layer,ladder,detector,yclu1,zclu1,phi2,tgl2,cv,1);
1103
b8ed1a92 1104 if(cl5!=0) {
2755f080 1105 trac->AddClusterV2(5,(clind5[l5] & 0x0fffffff)>>0);
1106 trac->AddClusterMark(5,mark5[l5]);
1107 }
1108 if(cl4!=0){
1109 trac->AddClusterV2(4,(clind4[l4] & 0x0fffffff)>>0);
1110 trac->AddClusterMark(4,mark4[l4]);
1111 }
1112 if(cl3!=0){
1113 trac->AddClusterV2(3,(clind3[l3] & 0x0fffffff)>>0);
1114 trac->AddClusterMark(3,mark3[l3]);
1115 }
1116 if(cl2!=0){
1117 trac->AddClusterV2(2,(clind2[l2] & 0x0fffffff)>>0);
1118 trac->AddClusterMark(2,mark2[l2]);
1119 }
1120 if(cl1!=0){
1121 trac->AddClusterV2(1,(clind1[l1] & 0x0fffffff)>>0);
1122 trac->AddClusterMark(1,mark1[l1]);
1123 }
1124 if(cl0!=0){
1125 trac->AddClusterV2(0,(clind0[l0] & 0x0fffffff)>>0);
1126 trac->AddClusterMark(0,mark0[l0]);
1127 }
1128
1129
1130 //fit with Kalman filter using AliITStrackerMI::RefitAt()
1131 AliITStrackMI* ot = new AliITStrackSA(*trac);
1132
1133 ot->ResetCovariance(10.);
1134 ot->ResetClusters();
1135
1136 if(RefitAt(AliITSRecoParam::GetrInsideITSscreen(),ot,trac)){ //fit from layer 1 to layer 6
1137 AliITStrackMI *otrack2 = new AliITStrackMI(*ot);
1138 otrack2->ResetCovariance(10.);
1139 otrack2->ResetClusters();
1140 //fit from layer 6 to layer 1
1141 if(RefitAt(AliITSRecoParam::GetrInsideSPD1(),otrack2,ot)) {
1142 fListOfTracks->AddLast(otrack2);
1143 new (tri[nlist]) AliITStrackSA(*trac);
1144 nlist++;
1145 } else {
1146 delete otrack2;
1147 }
1148
1149 }
1150
1151 delete ot;
1152 delete trac;
1153 }//end loop layer 6
1154 }//end loop layer 5
1155 }//end loop layer 4
1156 }//end loop layer 3
1157 }//end loop layer 2
1158 }//end loop layer 1
1159
1160 delete [] end;
1161
1162
1163
1164 Int_t dim=fListOfTracks->GetEntries();
1165 if(dim==0){
1166 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
1167 delete listlayer[i];
1168 }
1169 delete [] listlayer;
1170 listSA->Delete();
1171 delete listSA;
1172 delete [] firstmod;
1173 return 0;
1174 }
1175
1176 Int_t lowchi2 = FindTrackLowChiSquare(fListOfTracks,dim);
1177 AliITStrackV2* otrack =(AliITStrackV2*)fListOfTracks->At(lowchi2);
1178 AliITStrackSA* trsa = (AliITStrackSA*)listSA->At(lowchi2);
1179
1180 if(otrack==0) {
1181 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
1182 delete listlayer[i];
1183 }
1184 delete [] listlayer;
1185 listSA->Delete();
1186 delete listSA;
1187 delete [] firstmod;
1188 return 0;
1189 }
1190 Int_t * indexc = new Int_t[AliITSgeomTGeo::GetNLayers()];
1191 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) indexc[i]=0;
1192 for(Int_t nind=0;nind<otrack->GetNumberOfClusters();nind++){
1193 indexc[nind] = otrack->GetClusterIndex(nind);
1194 }
1195 Int_t labl[6][3];
1196 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
1197 if(i<otrack->GetNumberOfClusters()) {
1198 AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(indexc[i]);
1199 labl[i][0]=cl->GetLabel(0);
1200 labl[i][1]=cl->GetLabel(1);
1201 labl[i][2]=cl->GetLabel(2);
1202 } else {
1203 labl[i][0]=-1;
1204 labl[i][1]=-1;
1205 labl[i][2]=-1;
1206 }
1207 }
1208 delete [] indexc;
1209 CookLabel(otrack,0.); //MI change - to see fake ratio
1210
1211 Int_t label=FindLabel(labl[0][0],labl[1][0],labl[2][0],labl[3][0],labl[4][0],labl[5][0]);
1212 Int_t lflag=0;
1213 for(Int_t i=0;i<otrack->GetNumberOfClusters();i++)
1214 if(labl[i][0]==label || labl[i][1]==label || labl[i][2]==label) lflag++;
1215
1216 if(lflag<otrack->GetNumberOfClusters()) label = -label;
1217 otrack->SetLabel(label);
1218
1219 //remove clusters of found track
1220 for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
1221 for(Int_t cln=0;cln<trsa->GetNumberOfMarked(nlay);cln++){
1222 Int_t index = trsa->GetClusterMark(nlay,cln);
1223 fCluLayer[nlay]->RemoveAt(index);
1224 RemoveClusterCoord(nlay,index);
1225 fCluLayer[nlay]->Compress();
1226 }
1227 }
1228 listSA->Delete();
1229 delete listSA;
1230
1231 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
1232 delete listlayer[i];
1233 }
1234 delete [] listlayer;
1235 delete [] firstmod;
1236 return otrack;
1237
1238}
1239
1240
1241
1242//________________________________________________________________________
1243
1244AliITStrackV2* AliITStrackerSA::FitJumpyTrack(AliITStrackSA* tr,Double_t *primaryVertex) {
1245 //fit of the found track (jumpy tracks, <6 points, layers missing). A.Dainese 16.11.07
1246
1247
1248 Int_t * firstmod = new Int_t[AliITSgeomTGeo::GetNLayers()];
1249 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
1250 firstmod[i]=AliITSgeomTGeo::GetModuleIndex(i+1,1,1);
1251 }
1252
1253 Int_t nclusters = tr->GetNumberOfClustersSA();
1254 TObjArray** listlayer = new TObjArray*[AliITSgeomTGeo::GetNLayers()];
1255 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
1256 listlayer[i] = new TObjArray(0,0);
1257 }
1258
1259 TArrayI clind0(20);
1260 TArrayI clind1(20);
1261 TArrayI clind2(20);
1262 TArrayI clind3(20);
1263 TArrayI clind4(20);
1264 TArrayI clind5(20);
1265
1266 TArrayI mark0(20);
1267 TArrayI mark1(20);
1268 TArrayI mark2(20);
1269 TArrayI mark3(20);
1270 TArrayI mark4(20);
1271 TArrayI mark5(20);
1272
1273
1274 Int_t * nnn = new Int_t[AliITSgeomTGeo::GetNLayers()];
1275 Int_t * kkk = new Int_t[AliITSgeomTGeo::GetNLayers()];
1276 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {nnn[i]=0;kkk[i]=0;}
1277
1278 for(Int_t ncl=0;ncl<nclusters;ncl++){
1279 Int_t index = tr->GetClusterIndexSA(ncl);
1280 AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(index);
1281 if(cl->TestBit(kSAflag)==kTRUE) cl->ResetBit(kSAflag);
1282 Int_t lay = (index & 0xf0000000) >> 28;
1283 if(lay==0) { listlayer[0]->AddLast(cl); clind0[nnn[0]]=index;nnn[0]++;}
1284 if(lay==1) { listlayer[1]->AddLast(cl); clind1[nnn[1]]=index;nnn[1]++;}
1285 if(lay==2) { listlayer[2]->AddLast(cl); clind2[nnn[2]]=index;nnn[2]++;}
1286 if(lay==3) { listlayer[3]->AddLast(cl); clind3[nnn[3]]=index;nnn[3]++;}
1287 if(lay==4) { listlayer[4]->AddLast(cl); clind4[nnn[4]]=index;nnn[4]++;}
1288 if(lay==5) { listlayer[5]->AddLast(cl); clind5[nnn[5]]=index;nnn[5]++;}
1289 }
1290 delete [] nnn;
1291
1292 for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
1293 for(Int_t ncl=0;ncl<tr->GetNumberOfMarked(nlay);ncl++){
1294 Int_t mark = tr->GetClusterMark(nlay,ncl);
1295 if(nlay==0) { mark0[kkk[0]]=mark;kkk[0]++;}
1296 if(nlay==1) { mark1[kkk[1]]=mark;kkk[1]++;}
1297 if(nlay==2) { mark2[kkk[2]]=mark;kkk[2]++;}
1298 if(nlay==3) { mark3[kkk[3]]=mark;kkk[3]++;}
1299 if(nlay==4) { mark4[kkk[4]]=mark;kkk[4]++;}
1300 if(nlay==5) { mark5[kkk[5]]=mark;kkk[5]++;}
1301
1302 }
1303 }
1304
1305 delete [] kkk;
1306
1307 Int_t firstLay=-1,secondLay=-1;
1308 Int_t * end = new Int_t[AliITSgeomTGeo::GetNLayers()];
1309 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
1310 if(listlayer[i]->GetEntries()==0) {
1311 end[i]=1;
1312 } else {
1313 end[i]=listlayer[i]->GetEntries();
1314 if(firstLay==-1) {
1315 firstLay=i;
1316 } else if(secondLay==-1) {
1317 secondLay=i;
1318 }
1319 }
1320 }
1321
1322 TClonesArray* listSA = new TClonesArray("AliITStrackSA");
1323 TClonesArray &tri = *listSA;
1324 Int_t nlist=0;
1325
1326 for(Int_t l0=0;l0<end[0];l0++){ //loop on layer 1
1327 AliITSRecPoint* cl0 = (AliITSRecPoint*)listlayer[0]->At(l0);
1328 for(Int_t l1=0;l1<end[1];l1++){ //loop on layer 2
1329 AliITSRecPoint* cl1 = (AliITSRecPoint*)listlayer[1]->At(l1);
1330 for(Int_t l2=0;l2<end[2];l2++){ //loop on layer 3
1331 AliITSRecPoint* cl2 = (AliITSRecPoint*)listlayer[2]->At(l2);
1332 for(Int_t l3=0;l3<end[3];l3++){ //loop on layer 4
1333 AliITSRecPoint* cl3 = (AliITSRecPoint*)listlayer[3]->At(l3);
1334 for(Int_t l4=0;l4<end[4];l4++){ //loop on layer 5
1335 AliITSRecPoint* cl4 = (AliITSRecPoint*)listlayer[4]->At(l4);
1336 for(Int_t l5=0;l5<end[5];l5++){ //loop on layer 6
1337 AliITSRecPoint* cl5 = (AliITSRecPoint*)listlayer[5]->At(l5);
1338
1339
1340 Double_t x1,y1,z1,sx1,sy1,sz1;
1341 Double_t x2,y2,z2,sx2,sy2,sz2;
1342 AliITSRecPoint* p1=0;
1343 AliITSRecPoint* p2=0;
1344 Int_t index1=0,index2=0;
1345 Int_t mrk1=0,mrk2=0;
1346
1347 switch(firstLay) {
1348 case 0:
1349 p1=cl0;
1350 index1=clind0[l0];mrk1=mark0[l0];
1351 break;
1352 case 1:
1353 p1=cl1;
1354 index1=clind1[l1];mrk1=mark1[l1];
1355 break;
1356 case 2:
1357 p1=cl2;
1358 index1=clind2[l2];mrk1=mark2[l2];
1359 break;
1360 case 3:
1361 p1=cl3;
1362 index1=clind3[l3];mrk1=mark3[l3];
1363 break;
1364 case 4:
1365 p1=cl4;
1366 index1=clind4[l4];mrk1=mark4[l4];
1367 break;
1368 }
1369
1370 switch(secondLay) {
1371 case 1:
1372 p2=cl1;
1373 index2=clind1[l1];mrk2=mark1[l1];
1374 break;
1375 case 2:
1376 p2=cl2;
1377 index2=clind2[l2];mrk2=mark2[l2];
1378 break;
1379 case 3:
1380 p2=cl3;
1381 index2=clind3[l3];mrk2=mark3[l3];
1382 break;
1383 case 4:
1384 p2=cl4;
1385 index2=clind4[l4];mrk2=mark4[l4];
1386 break;
1387 case 5:
1388 p2=cl5;
1389 index2=clind5[l5];mrk2=mark5[l5];
1390 break;
1391 }
1392
1393 Int_t module1 = p1->GetDetectorIndex()+firstmod[firstLay];
1394
1395 Int_t cln1=mrk1;
1396 Int_t cln2=mrk2;
1397 AliITSclusterTable* arr1 = (AliITSclusterTable*)GetClusterCoord(firstLay,cln1);
1398 AliITSclusterTable* arr2 = (AliITSclusterTable*)GetClusterCoord(secondLay,cln2);
1399 x1 = arr1->GetX();
1400 x2 = arr2->GetX();
1401 y1 = arr1->GetY();
1402 y2 = arr2->GetY();
1403 z1 = arr1->GetZ();
1404 z2 = arr2->GetZ();
1405 sx1 = arr1->GetSx();
1406 sx2 = arr2->GetSx();
1407 sy1 = arr1->GetSy();
1408 sy2 = arr2->GetSy();
1409 sz1 = arr1->GetSz();
1410 sz2 = arr2->GetSz();
1411
1412 Int_t layer,ladder,detector;
1413 AliITSgeomTGeo::GetModuleId(module1,layer,ladder,detector);
1414 Float_t yclu1 = p1->GetY();
1415 Float_t zclu1 = p1->GetZ();
1416 Double_t cv=Curvature(primaryVertex[0],primaryVertex[1],x1,y1,x2,y2);
1417 Double_t tgl2 = (z2-z1)/TMath::Sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
1418 Double_t phi2 = TMath::ATan2((y2-y1),(x2-x1));
1419 AliITStrackSA* trac = new AliITStrackSA(layer,ladder,detector,yclu1,zclu1,phi2,tgl2,cv,1);
1420
1421 if(cl5!=0) {
1422 trac->AddClusterV2(5,(clind5[l5] & 0x0fffffff)>>0);
1423 trac->AddClusterMark(5,mark5[l5]);
b8ed1a92 1424 }
1425 if(cl4!=0){
2755f080 1426 trac->AddClusterV2(4,(clind4[l4] & 0x0fffffff)>>0);
1427 trac->AddClusterMark(4,mark4[l4]);
b8ed1a92 1428 }
1429 if(cl3!=0){
2755f080 1430 trac->AddClusterV2(3,(clind3[l3] & 0x0fffffff)>>0);
1431 trac->AddClusterMark(3,mark3[l3]);
b8ed1a92 1432 }
1433 if(cl2!=0){
2755f080 1434 trac->AddClusterV2(2,(clind2[l2] & 0x0fffffff)>>0);
1435 trac->AddClusterMark(2,mark2[l2]);
b8ed1a92 1436 }
1437 if(cl1!=0){
2755f080 1438 trac->AddClusterV2(1,(clind1[l1] & 0x0fffffff)>>0);
1439 trac->AddClusterMark(1,mark1[l1]);
b8ed1a92 1440 }
1441 if(cl0!=0){
2755f080 1442 trac->AddClusterV2(0,(clind0[l0] & 0x0fffffff)>>0);
1443 trac->AddClusterMark(0,mark0[l0]);
b8ed1a92 1444 }
1445
1446
1447 //fit with Kalman filter using AliITStrackerMI::RefitAt()
1448 AliITStrackMI* ot = new AliITStrackSA(*trac);
1449
1450 ot->ResetCovariance(10.);
1451 ot->ResetClusters();
1452
e50912db 1453 if(RefitAt(AliITSRecoParam::GetrInsideITSscreen(),ot,trac)){ //fit from layer 1 to layer 6
b8ed1a92 1454 AliITStrackMI *otrack2 = new AliITStrackMI(*ot);
1455 otrack2->ResetCovariance(10.);
1456 otrack2->ResetClusters();
1457 //fit from layer 6 to layer 1
e50912db 1458 if(RefitAt(AliITSRecoParam::GetrInsideSPD1(),otrack2,ot)) {
b8ed1a92 1459 fListOfTracks->AddLast(otrack2);
1460 new (tri[nlist]) AliITStrackSA(*trac);
1461 nlist++;
1462 } else {
1463 delete otrack2;
1464 }
1465
1466 }
1467
1468 delete ot;
1469 delete trac;
1470 }//end loop layer 6
1471 }//end loop layer 5
1472 }//end loop layer 4
1473 }//end loop layer 3
1474 }//end loop layer 2
1475 }//end loop layer 1
1476
1477 delete [] end;
1478
1479
1480
1481 Int_t dim=fListOfTracks->GetEntries();
1482 if(dim==0){
1483 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
1484 delete listlayer[i];
1485 }
1486 delete [] listlayer;
1487 listSA->Delete();
1488 delete listSA;
1489 delete [] firstmod;
1490 return 0;
1491 }
1492
1493 Int_t lowchi2 = FindTrackLowChiSquare(fListOfTracks,dim);
1494 AliITStrackV2* otrack =(AliITStrackV2*)fListOfTracks->At(lowchi2);
1495 AliITStrackSA* trsa = (AliITStrackSA*)listSA->At(lowchi2);
1496
1497 if(otrack==0) {
1498 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
1499 delete listlayer[i];
1500 }
1501 delete [] listlayer;
1502 listSA->Delete();
1503 delete listSA;
1504 delete [] firstmod;
1505 return 0;
1506 }
1507 Int_t * indexc = new Int_t[AliITSgeomTGeo::GetNLayers()];
1508 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) indexc[i]=0;
1509 for(Int_t nind=0;nind<otrack->GetNumberOfClusters();nind++){
1510 indexc[nind] = otrack->GetClusterIndex(nind);
1511 }
1512 Int_t labl[6][3];
1513 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++) {
1514 if(i<otrack->GetNumberOfClusters()) {
1515 AliITSRecPoint* cl = (AliITSRecPoint*)GetCluster(indexc[i]);
1516 labl[i][0]=cl->GetLabel(0);
1517 labl[i][1]=cl->GetLabel(1);
1518 labl[i][2]=cl->GetLabel(2);
1519 } else {
1520 labl[i][0]=-1;
1521 labl[i][1]=-1;
1522 labl[i][2]=-1;
1523 }
1524 }
1525 delete [] indexc;
2755f080 1526
b8ed1a92 1527 CookLabel(otrack,0.); //MI change - to see fake ratio
1528
1529 Int_t label=FindLabel(labl[0][0],labl[1][0],labl[2][0],labl[3][0],labl[4][0],labl[5][0]);
1530 Int_t lflag=0;
2755f080 1531 for(Int_t i=0;i<otrack->GetNumberOfClusters();i++)
b8ed1a92 1532 if(labl[i][0]==label || labl[i][1]==label || labl[i][2]==label) lflag++;
1533
2755f080 1534 if(lflag<otrack->GetNumberOfClusters()) label = -label;
b8ed1a92 1535 otrack->SetLabel(label);
1536
1537 //remove clusters of found track
1538 for(Int_t nlay=0;nlay<AliITSgeomTGeo::GetNLayers();nlay++){
1539 for(Int_t cln=0;cln<trsa->GetNumberOfMarked(nlay);cln++){
1540 Int_t index = trsa->GetClusterMark(nlay,cln);
1541 fCluLayer[nlay]->RemoveAt(index);
1542 RemoveClusterCoord(nlay,index);
1543 fCluLayer[nlay]->Compress();
7e5bf5af 1544 }
1545 }
1546 listSA->Delete();
1547 delete listSA;
1548
cc088660 1549 for(Int_t i=0;i<AliITSgeomTGeo::GetNLayers();i++){
13918578 1550 delete listlayer[i];
1551 }
c09cece6 1552 delete [] listlayer;
037efb75 1553 delete [] firstmod;
13918578 1554 return otrack;
1555
1556}
1557
bef31448 1558
4e05ab9a 1559
bef31448 1560//_______________________________________________________
7e5bf5af 1561Int_t AliITStrackerSA::SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow, AliITStrackSA* trs,Double_t /*zvertex*/,Int_t pflag){
13918578 1562 //function used to to find the clusters associated to the track
2755f080 1563
1564 if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(layer)) return 0;
1565
13918578 1566 Int_t nc=0;
1567 AliITSlayer &lay = fgLayers[layer];
7e5bf5af 1568 Double_t r=lay.GetR();
2755f080 1569 if(pflag==1){
cfe729e0 1570 Float_t cx1,cx2,cy1,cy2;
1571 FindEquation(fPoint1[0],fPoint1[1],fPoint2[0],fPoint2[1],fPoint3[0],fPoint3[1],fCoef1,fCoef2,fCoef3);
1572 if (FindIntersection(fCoef1,fCoef2,fCoef3,-r*r,cx1,cy1,cx2,cy2)==0)
1573 return 0;
1966f03c 1574 Double_t fi1=TMath::ATan2(cy1-fPoint1[1],cx1-fPoint1[0]);
1575 Double_t fi2=TMath::ATan2(cy2-fPoint1[1],cx2-fPoint1[0]);
cfe729e0 1576 fPhiEstimate=ChoosePoint(fi1,fi2,fPhic);
1577 }
13918578 1578
7e5bf5af 1579
1580 Int_t ncl = fCluLayer[layer]->GetEntries();
1581 for (Int_t index=0; index<ncl; index++) {
00a7cc50 1582 AliITSRecPoint *c = (AliITSRecPoint*)fCluLayer[layer]->At(index);
7e5bf5af 1583 if (!c) continue;
1584 if (c->GetQ()<=0) continue;
1585
1586 AliITSclusterTable* arr = (AliITSclusterTable*)GetClusterCoord(layer,index);
1587 Double_t phi = arr->GetPhi();
cfe729e0 1588 if (TMath::Abs(phi-fPhiEstimate)>phiwindow) continue;
494fda7c 1589
7e5bf5af 1590 Double_t lambda = arr->GetLambda();
cfe729e0 1591 if (TMath::Abs(lambda-fLambdac)>lambdawindow) continue;
1592
7e5bf5af 1593 if(trs->GetNumberOfClustersSA()==trs->GetMaxNumberOfClusters()) return 0;
1594 if(trs->GetNumberOfMarked(layer)==trs->GetMaxNMarkedPerLayer()) return 0;
1595 Int_t orind = arr->GetOrInd();
1596 trs->AddClusterSA(layer,orind);
1597 trs->AddClusterMark(layer,index);
1598
cfe729e0 1599 nc++;
1600 fLambdac=lambda;
1601 fPhiEstimate=phi;
cfe729e0 1602
7e5bf5af 1603 fPointc[0]=arr->GetX();
1604 fPointc[1]=arr->GetY();
1605
cfe729e0 1606 }
1607 return nc;
1608}
13918578 1609
bef31448 1610//________________________________________________________________
1611void AliITStrackerSA::UpdatePoints(){
1612 //update of points for the estimation of the curvature
13918578 1613
bef31448 1614 fPoint2[0]=fPoint3[0];
1615 fPoint2[1]=fPoint3[1];
1616 fPoint3[0]=fPointc[0];
1617 fPoint3[1]=fPointc[1];
13918578 1618
1619
13918578 1620}
13918578 1621
13918578 1622//___________________________________________________________________
1623Int_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){
1624
1625 //given (x,y) of three recpoints (in global coordinates)
1626 //returns the parameters a,b,c of circonference x*x + y*y +a*x + b*y +c
1627
1628 Float_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1);
1629 if(den==0) return 0;
1630 a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den;
1631 b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1);
1632 c = -x1*x1-y1*y1-a*x1-b*y1;
1633 return 1;
1634 }
1635//__________________________________________________________________________
1636 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){
1637
1638 //Finds the intersection between the circonference of the track and the circonference centered in (0,0) represented by one layer
1639 //c2 is -rlayer*rlayer
1640
1641 if(a1==0) return 0;
3a2f227d 1642 Double_t m = c2-c1;
1643 Double_t aA = (b1*b1)/(a1*a1)+1;
1644 Double_t bB = (-2*m*b1/(a1*a1));
1645 Double_t cC = c2+(m*m)/(a1*a1);
1646 Double_t dD = bB*bB-4*aA*cC;
1647 if(dD<0) return 0;
13918578 1648
3a2f227d 1649 y1 = (-bB+TMath::Sqrt(dD))/(2*aA);
1650 y2 = (-bB-TMath::Sqrt(dD))/(2*aA);
13918578 1651 x1 = (c2-c1-b1*y1)/a1;
1652 x2 = (c2-c1-b1*y2)/a1;
1653
1654 return 1;
1655}
1656//____________________________________________________________________
1657Double_t AliITStrackerSA::Curvature(Double_t x1,Double_t y1,Double_t
1658x2,Double_t y2,Double_t x3,Double_t y3){
1659
1660 //calculates the curvature of track
1661 Double_t den = (x3-x1)*(y2-y1)-(x2-x1)*(y3-y1);
1662 if(den==0) return 0;
1663 Double_t a = ((y3-y1)*(x2*x2+y2*y2-x1*x1-y1*y1)-(y2-y1)*(x3*x3+y3*y3-x1*x1-y1*y1))/den;
1664 Double_t b = -(x2*x2-x1*x1+y2*y2-y1*y1+a*(x2-x1))/(y2-y1);
1665 Double_t c = -x1*x1-y1*y1-a*x1-b*y1;
1666 Double_t xc=-a/2.;
1667
1668 if((a*a+b*b-4*c)<0) return 0;
1669 Double_t rad = TMath::Sqrt(a*a+b*b-4*c)/2.;
1670 if(rad==0) return 0;
1671
1672 if((x1>0 && y1>0 && x1<xc)) rad*=-1;
1673 if((x1<0 && y1>0 && x1<xc)) rad*=-1;
1674 // if((x1<0 && y1<0 && x1<xc)) rad*=-1;
1675 // if((x1>0 && y1<0 && x1<xc)) rad*=-1;
1676
1677 return 1/rad;
1678
1679}
7e5bf5af 1680
1681
13918578 1682//____________________________________________________________________
1683Double_t AliITStrackerSA::ChoosePoint(Double_t p1, Double_t p2, Double_t pp){
1684
1685 //Returns the point closest to pp
1686
1687 Double_t diff1 = p1-pp;
1688 Double_t diff2 = p2-pp;
1689
1690 if(TMath::Abs(diff1)<TMath::Abs(diff2)) fPhiEstimate=p1;
1691 else fPhiEstimate=p2;
1692 return fPhiEstimate;
1693
1694}
1695
1696
1697//_________________________________________________________________
7e5bf5af 1698Int_t AliITStrackerSA::FindTrackLowChiSquare(TObjArray* tracklist, Int_t dim) const {
52a9777e 1699 // returns track with lowers chi square
13918578 1700 if(dim==1){
7e5bf5af 1701 //AliITStrackV2* trk = (AliITStrackV2*)tracklist->At(0);
1702 //return trk;
1703 return 0;
13918578 1704 }
52a9777e 1705 if(dim==0) return 0;
037efb75 1706 Double_t * chi2 = new Double_t[dim];
1707 Int_t * index = new Int_t[dim];
13918578 1708 for(Int_t i=0;i<dim;i++){
1709 AliITStrackV2* trk = (AliITStrackV2*)tracklist->At(i);
1710 chi2[i]=trk->GetChi2();
1711 index[i]=i;
1712 }
1713
1714 Int_t w=0;Double_t value;
1715 Int_t lp;
1716 while(w<dim){
1717 for(Int_t j=w+1;j<dim;j++){
1718 if(chi2[w]<chi2[j]){
bef31448 1719 value=chi2[w];
1720 chi2[w]=chi2[j];
1721 chi2[j]=value;
1722 lp=index[w];
1723 index[w]=index[j];
1724 index[j]=lp;
13918578 1725 }
1726 }
1727 w++;
1728 }
52a9777e 1729 Int_t tmp = index[dim-1];
037efb75 1730 delete [] chi2;
1731 delete [] index;
52a9777e 1732 return tmp;
13918578 1733}
1734
1735//__________________________________________________________
2755f080 1736Int_t AliITStrackerSA::FindLabel(Int_t l0, Int_t l1, Int_t l2, Int_t l3, Int_t l4, Int_t l5){
13918578 1737
1738 //function used to determine the track label
1739
2755f080 1740 Int_t lb[6] = {l0,l1,l2,l3,l4,l5};
13918578 1741 Int_t aa[6]={1,1,1,1,1,1};
1742 Int_t ff=0;
1743 Int_t ll=0;
1744 Int_t k=0;Int_t w=0;Int_t num=6;
8b3779ef 1745 for(Int_t i=5;i>=0;i--) if(lb[i]==-1) num=i;
13918578 1746
1747 while(k<num){
1748
1749 for(Int_t i=k+1;i<num;i++){
1750
1751 if(lb[k]==lb[i] && aa[k]!=0){
1752
1753 aa[k]+=1;
1754 aa[i]=0;
1755 }
1756 }
8b3779ef 1757 k++;
13918578 1758 }
1759
1760 while(w<num){
8b3779ef 1761
13918578 1762 for(Int_t j=0;j<6;j++){
1763 if(aa[w]<aa[j]){
1764 ff=aa[w];
1765 aa[w]=aa[j];
1766 aa[j]=ff;
1767 ll=lb[w];
1768 lb[w]=lb[j];
1769 lb[j]=ll;
1770 }
1771 }
8b3779ef 1772 w++;
13918578 1773 }
8b3779ef 1774
1775 if(num<1) return -1;
1776 return lb[num-1];
13918578 1777}
1778
1779//_____________________________________________________________________________
1780Int_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,
2755f080 1781Int_t gl12, Int_t gl13, Int_t gl14,Int_t gl15, Int_t gl16, Int_t gl17, Int_t gl18, Int_t minNPoints){
13918578 1782
1783
1784 //function used to assign label to the found track. If track is fake, the label is negative
1785
1786 Int_t lb0[6] = {gl1,gl2,gl3,gl4,gl5,gl6};
1787 Int_t lb1[6] = {gl7,gl8,gl9,gl10,gl11,gl12};
1788 Int_t lb2[6] = {gl13,gl14,gl15,gl16,gl17,gl18};
1789 Int_t ll=FindLabel(lb0[0],lb0[1],lb0[2],lb0[3],lb0[4],lb0[5]);
1790 Int_t lflag=0;Int_t num=6;
1791 if(lb0[5]==-1 && lb1[5]==-1 && lb2[5]==-1) num=5;
1792
1793 for(Int_t i=0;i<num;i++){
1794 if(lb0[i]==ll || lb1[i]==ll || lb2[i]==ll) lflag+=1;
1795 }
1796
2755f080 1797 if(lflag>=minNPoints) return ll;
13918578 1798 else return -ll;
1799
1800
1801}
1802
1803//_____________________________________________________________________________
1804void AliITStrackerSA::SetWindowSizes(Int_t n, Double_t *phi, Double_t *lam){
1805 // Set sizes of the phi and lambda windows used for track finding
1806 fNloop = n;
1807 if(phi){ // user defined values
1808 fPhiWin = new Double_t[fNloop];
1809 fLambdaWin = new Double_t[fNloop];
1810 for(Int_t k=0;k<fNloop;k++){
1811 fPhiWin[k]=phi[k];
1812 fLambdaWin[k]=lam[k];
1813 }
1814 }
1815 else { // default values
627b6db6 1816
1817 Double_t phid[33] = {0.002,0.003,0.004,0.0045,0.0047,
bef31448 1818 0.005,0.0053,0.0055,
1819 0.006,0.0063,0.0065,0.007,0.0073,0.0075,0.0077,
1820 0.008,0.0083,0.0085,0.0087,0.009,0.0095,0.0097,
627b6db6 1821 0.01,0.0105,0.011,0.0115,0.012,0.0125,0.013,0.0135,0.0140,0.0145};
1822 Double_t lambdad[33] = {0.003,0.004,0.005,0.005,0.005,
1823 0.005,0.005,0.006,
1824 0.006,0.006,0.006,0.007,0.007,0.007,0.007,
1825 0.007,0.007,0.007,0.007,0.007,0.007,0.007,
1826 0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008,0.008};
bef31448 1827
627b6db6 1828 if(fNloop!=33){
1829 fNloop = 33;
13918578 1830 }
627b6db6 1831
1832
13918578 1833 fPhiWin = new Double_t[fNloop];
1834 fLambdaWin = new Double_t[fNloop];
e340bb86 1835
e340bb86 1836 Double_t factor=AliITSReconstructor::GetRecoParam()->GetFactorSAWindowSizes(); // possibility to enlarge windows for cosmics reco with large misalignments (A.Dainese)
2755f080 1837
1838 for(Int_t k=0;k<fNloop;k++){
e340bb86 1839 fPhiWin[k]=phid[k]*factor;
1840 fLambdaWin[k]=lambdad[k]*factor;
13918578 1841 }
1842
1843 }
1844
1845}
7e5bf5af 1846//_______________________________________________________________________
cc088660 1847void AliITStrackerSA::GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda, Float_t &x, Float_t &y,Float_t &z,Double_t* vertex){
7e5bf5af 1848 //Returns values of phi (azimuthal) and lambda angles for a given cluster
cc088660 1849/*
7e5bf5af 1850 Double_t rot[9]; fGeom->GetRotMatrix(module,rot);
1851 Int_t lay,lad,det; fGeom->GetModuleId(module,lay,lad,det);
1852 Float_t tx,ty,tz; fGeom->GetTrans(lay,lad,det,tx,ty,tz);
1853
1854 Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi();
1855 Double_t phi1=TMath::Pi()/2+alpha;
1856 if (lay==1) phi1+=TMath::Pi();
1857
1858 Float_t cp=TMath::Cos(phi1), sp=TMath::Sin(phi1);
1859 Float_t r=tx*cp+ty*sp;
1860
cc088660 1861 xyz= r*cp - cl->GetY()*sp;
7e5bf5af 1862 y= r*sp + cl->GetY()*cp;
1863 z=cl->GetZ();
cc088660 1864*/
1865 Float_t xyz[3];
1866 cl->GetGlobalXYZ(xyz);
1867 x=xyz[0];
1868 y=xyz[1];
1869 z=xyz[2];
1870
1966f03c 1871 phi=TMath::ATan2(y-vertex[1],x-vertex[0]);
7e5bf5af 1872 lambda=TMath::ATan2(z-vertex[2],TMath::Sqrt((x-vertex[0])*(x-vertex[0])+(y-vertex[1])*(y-vertex[1])));
1873}
13918578 1874
7e5bf5af 1875//________________________________________________________________________
cc088660 1876void AliITStrackerSA::GetCoorErrors(AliITSRecPoint* cl,Float_t &sx,Float_t &sy, Float_t &sz){
7e5bf5af 1877
cc088660 1878 //returns sigmax, y, z of cluster in global coordinates
1879/*
7e5bf5af 1880 Double_t rot[9]; fGeom->GetRotMatrix(module,rot);
cc088660 1881 Int_t lay,lad,det;
1882 AliITSgeomTGeo::GetModuleId(module,lay,lad,det);
7e5bf5af 1883
1884 Double_t alpha=TMath::ATan2(rot[1],rot[0])+TMath::Pi();
1885 Double_t phi=TMath::Pi()/2+alpha;
1886 if (lay==1) phi+=TMath::Pi();
1887
1888 Float_t cp=TMath::Cos(phi), sp=TMath::Sin(phi);
cc088660 1889*/
1890 Float_t covm[6];
1891 cl->GetGlobalCov(covm);
1892 sx=TMath::Sqrt(covm[0]);
1893 sy=TMath::Sqrt(covm[3]);
1894 sz=TMath::Sqrt(covm[5]);
1895/*
7e5bf5af 1896 sx = TMath::Sqrt(sp*sp*cl->GetSigmaY2());
1897 sy = TMath::Sqrt(cp*cp*cl->GetSigmaY2());
1898 sz = TMath::Sqrt(cl->GetSigmaZ2());
cc088660 1899*/
7e5bf5af 1900}
cc088660 1901