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Add AliTPCmapper and AliTPCLaserTracks (Marian)
[u/mrichter/AliRoot.git] / TPC / AliTPCtrackerMI.cxx
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1c53abe2 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
1c53abe2 16
17//-------------------------------------------------------
18// Implementation of the TPC tracker
19//
20// Origin: Marian Ivanov Marian.Ivanov@cern.ch
21//
34acb742 22// AliTPC parallel tracker
1c53abe2 23//-------------------------------------------------------
47966a6d 24
25
26/* $Id$ */
27
cc5e9db0 28#include "Riostream.h"
6d171107 29#include <TClonesArray.h>
30#include <TFile.h>
31#include <TObjArray.h>
32#include <TTree.h>
a3232aae 33#include "AliLog.h"
1c53abe2 34
47966a6d 35#include "AliComplexCluster.h"
91162307 36#include "AliESD.h"
6c94f330 37#include "AliKink.h"
38#include "AliV0.h"
91162307 39#include "AliHelix.h"
91162307 40#include "AliRunLoader.h"
6d171107 41#include "AliTPCClustersRow.h"
42#include "AliTPCParam.h"
9996a03b 43#include "AliTPCReconstructor.h"
6d171107 44#include "AliTPCpolyTrack.h"
81e97e0d 45#include "AliTPCreco.h"
46#include "AliTPCseed.h"
b67e07dc 47#include "AliTPCtrackerMI.h"
6d171107 48#include "TStopwatch.h"
81e97e0d 49#include "AliTPCReconstructor.h"
81e97e0d 50#include "AliPID.h"
eea478d3 51#include "TTreeStream.h"
5d837844 52#include "AliAlignObj.h"
53#include "AliTrackPointArray.h"
54
6d171107 55//
c9427e08 56
91162307 57ClassImp(AliTPCtrackerMI)
c9427e08 58
59
b67e07dc 60class AliTPCFastMath {
91162307 61public:
b67e07dc 62 AliTPCFastMath();
91162307 63 static Double_t FastAsin(Double_t x);
64 private:
b67e07dc 65 static Double_t fgFastAsin[20000]; //lookup table for fast asin computation
91162307 66};
c9427e08 67
b67e07dc 68Double_t AliTPCFastMath::fgFastAsin[20000];
2274b54b 69AliTPCFastMath gAliTPCFastMath; // needed to fill the LUT
c9427e08 70
b67e07dc 71AliTPCFastMath::AliTPCFastMath(){
72 //
73 // initialized lookup table;
91162307 74 for (Int_t i=0;i<10000;i++){
75 fgFastAsin[2*i] = TMath::ASin(i/10000.);
76 fgFastAsin[2*i+1] = (TMath::ASin((i+1)/10000.)-fgFastAsin[2*i]);
77 }
c9427e08 78}
79
b67e07dc 80Double_t AliTPCFastMath::FastAsin(Double_t x){
81 //
82 // return asin using lookup table
91162307 83 if (x>0){
84 Int_t index = int(x*10000);
85 return fgFastAsin[2*index]+(x*10000.-index)*fgFastAsin[2*index+1];
86 }
87 x*=-1;
88 Int_t index = int(x*10000);
89 return -(fgFastAsin[2*index]+(x*10000.-index)*fgFastAsin[2*index+1]);
1c53abe2 90}
91
92
93
94
91162307 95Int_t AliTPCtrackerMI::UpdateTrack(AliTPCseed * track, Int_t accept){
b67e07dc 96 //
97 //update track information using current cluster - track->fCurrentCluster
98
1c53abe2 99
b9671574 100 AliTPCclusterMI* c =track->GetCurrentCluster();
101 if (accept>0) track->SetCurrentClusterIndex1(track->GetCurrentClusterIndex1() | 0x8000); //sign not accepted clusters
c9427e08 102
b9671574 103 UInt_t i = track->GetCurrentClusterIndex1();
1c53abe2 104
105 Int_t sec=(i&0xff000000)>>24;
91162307 106 //Int_t row = (i&0x00ff0000)>>16;
b9671574 107 track->SetRow((i&0x00ff0000)>>16);
108 track->SetSector(sec);
1c53abe2 109 // Int_t index = i&0xFFFF;
b9671574 110 if (sec>=fParam->GetNInnerSector()) track->SetRow(track->GetRow()+fParam->GetNRowLow());
111 track->SetClusterIndex2(track->GetRow(), i);
91162307 112 //track->fFirstPoint = row;
113 //if ( track->fLastPoint<row) track->fLastPoint =row;
114 // if (track->fRow<0 || track->fRow>160) {
115 // printf("problem\n");
116 //}
b9671574 117 if (track->GetFirstPoint()>track->GetRow())
118 track->SetFirstPoint(track->GetRow());
119 if (track->GetLastPoint()<track->GetRow())
120 track->SetLastPoint(track->GetRow());
91162307 121
122
b9671574 123 track->SetClusterPointer(track->GetRow(),c);
1c53abe2 124 //
125
3f82c4f2 126 Double_t angle2 = track->GetSnp()*track->GetSnp();
1c53abe2 127 //
128 //SET NEW Track Point
129 //
85e2b57d 130 if (angle2<1) //PH sometimes angle2 is very big. To be investigated...
91162307 131 {
85e2b57d 132 angle2 = TMath::Sqrt(angle2/(1-angle2));
b9671574 133 AliTPCTrackerPoint &point =*(track->GetTrackPoint(track->GetRow()));
1c53abe2 134 //
b9671574 135 point.SetSigmaY(c->GetSigmaY2()/track->GetCurrentSigmaY2());
136 point.SetSigmaZ(c->GetSigmaZ2()/track->GetCurrentSigmaZ2());
137 point.SetErrY(sqrt(track->GetErrorY2()));
138 point.SetErrZ(sqrt(track->GetErrorZ2()));
1c53abe2 139 //
91162307 140 point.SetX(track->GetX());
141 point.SetY(track->GetY());
142 point.SetZ(track->GetZ());
143 point.SetAngleY(angle2);
144 point.SetAngleZ(track->GetTgl());
b9671574 145 if (point.IsShared()){
146 track->SetErrorY2(track->GetErrorY2()*4);
147 track->SetErrorZ2(track->GetErrorZ2()*4);
91162307 148 }
149 }
150
b9671574 151 Double_t chi2 = track->GetPredictedChi2(track->GetCurrentCluster());
91162307 152 //
b9671574 153 track->SetErrorY2(track->GetErrorY2()*1.3);
154 track->SetErrorY2(track->GetErrorY2()+0.01);
155 track->SetErrorZ2(track->GetErrorZ2()*1.3);
156 track->SetErrorZ2(track->GetErrorZ2()+0.005);
91162307 157 //}
158 if (accept>0) return 0;
159 if (track->GetNumberOfClusters()%20==0){
160 // if (track->fHelixIn){
161 // TClonesArray & larr = *(track->fHelixIn);
162 // Int_t ihelix = larr.GetEntriesFast();
163 // new(larr[ihelix]) AliHelix(*track) ;
164 //}
1c53abe2 165 }
b9671574 166 track->SetNoCluster(0);
91162307 167 return track->Update(c,chi2,i);
168}
169
170
171
172Int_t AliTPCtrackerMI::AcceptCluster(AliTPCseed * seed, AliTPCclusterMI * cluster, Float_t factor,
173 Float_t cory, Float_t corz)
174{
1c53abe2 175 //
91162307 176 // decide according desired precision to accept given
177 // cluster for tracking
178 Double_t sy2=ErrY2(seed,cluster)*cory;
179 Double_t sz2=ErrZ2(seed,cluster)*corz;
180 //sy2=ErrY2(seed,cluster)*cory;
181 //sz2=ErrZ2(seed,cluster)*cory;
1c53abe2 182
91162307 183 Double_t sdistancey2 = sy2+seed->GetSigmaY2();
184 Double_t sdistancez2 = sz2+seed->GetSigmaZ2();
185
b9671574 186 Double_t rdistancey2 = (seed->GetCurrentCluster()->GetY()-seed->GetY())*
187 (seed->GetCurrentCluster()->GetY()-seed->GetY())/sdistancey2;
188 Double_t rdistancez2 = (seed->GetCurrentCluster()->GetZ()-seed->GetZ())*
189 (seed->GetCurrentCluster()->GetZ()-seed->GetZ())/sdistancez2;
91162307 190
191 Double_t rdistance2 = rdistancey2+rdistancez2;
192 //Int_t accept =0;
1c53abe2 193
91162307 194 if (rdistance2>16) return 3;
195
196
197 if ((rdistancey2>9.*factor || rdistancez2>9.*factor) && cluster->GetType()==0)
198 return 2; //suspisiouce - will be changed
199
200 if ((rdistancey2>6.25*factor || rdistancez2>6.25*factor) && cluster->GetType()>0)
201 // strict cut on overlaped cluster
202 return 2; //suspisiouce - will be changed
203
204 if ( (rdistancey2>1.*factor || rdistancez2>6.25*factor )
205 && cluster->GetType()<0){
b9671574 206 seed->SetNFoundable(seed->GetNFoundable()-1);
91162307 207 return 2;
1c53abe2 208 }
91162307 209 return 0;
210}
211
212
1c53abe2 213
1c53abe2 214
1c53abe2 215//_____________________________________________________________________________
f8aae377 216AliTPCtrackerMI::AliTPCtrackerMI(const AliTPCParam *par):
1c53abe2 217AliTracker(), fkNIS(par->GetNInnerSector()/2), fkNOS(par->GetNOuterSector()/2)
218{
219 //---------------------------------------------------------------------
220 // The main TPC tracker constructor
221 //---------------------------------------------------------------------
222 fInnerSec=new AliTPCSector[fkNIS];
223 fOuterSec=new AliTPCSector[fkNOS];
91162307 224
1c53abe2 225 Int_t i;
226 for (i=0; i<fkNIS; i++) fInnerSec[i].Setup(par,0);
227 for (i=0; i<fkNOS; i++) fOuterSec[i].Setup(par,1);
228
229 fN=0; fSectors=0;
230
1c53abe2 231 fSeeds=0;
232 fNtracks = 0;
91162307 233 fParam = par;
234 Int_t nrowlow = par->GetNRowLow();
235 Int_t nrowup = par->GetNRowUp();
236
237
238 for (Int_t i=0;i<nrowlow;i++){
239 fXRow[i] = par->GetPadRowRadiiLow(i);
240 fPadLength[i]= par->GetPadPitchLength(0,i);
241 fYMax[i] = fXRow[i]*TMath::Tan(0.5*par->GetInnerAngle());
242 }
243
244
245 for (Int_t i=0;i<nrowup;i++){
246 fXRow[i+nrowlow] = par->GetPadRowRadiiUp(i);
247 fPadLength[i+nrowlow] = par->GetPadPitchLength(60,i);
248 fYMax[i+nrowlow] = fXRow[i+nrowlow]*TMath::Tan(0.5*par->GetOuterAngle());
249 }
250 fSeeds=0;
251 //
252 fInput = 0;
253 fOutput = 0;
254 fSeedTree = 0;
255 fTreeDebug =0;
256 fNewIO =0;
257 fDebug =0;
258 fEvent =0;
81e97e0d 259 fDebugStreamer = new TTreeSRedirector("TPCdebug.root");
1c53abe2 260}
2fc0c115 261//________________________________________________________________________
58251ea0 262AliTPCtrackerMI::AliTPCtrackerMI(const AliTPCtrackerMI &t):
263 AliTracker(t),
264 fkNIS(t.fkNIS),
265 fkNOS(t.fkNOS)
266{
2fc0c115 267 //------------------------------------
268 // dummy copy constructor
269 //------------------------------------------------------------------
270}
271AliTPCtrackerMI & AliTPCtrackerMI::operator=(const AliTPCtrackerMI& /*r*/){
272 //------------------------------
273 // dummy
274 //--------------------------------------------------------------
275 return *this;
276}
1c53abe2 277//_____________________________________________________________________________
278AliTPCtrackerMI::~AliTPCtrackerMI() {
279 //------------------------------------------------------------------
280 // TPC tracker destructor
281 //------------------------------------------------------------------
282 delete[] fInnerSec;
283 delete[] fOuterSec;
284 if (fSeeds) {
285 fSeeds->Delete();
286 delete fSeeds;
287 }
81e97e0d 288 if (fDebugStreamer) delete fDebugStreamer;
1c53abe2 289}
290
91162307 291void AliTPCtrackerMI::SetIO()
292{
1c53abe2 293 //
91162307 294 fNewIO = kTRUE;
e191bb57 295 fInput = AliRunLoader::GetTreeR("TPC", kFALSE,AliConfig::GetDefaultEventFolderName());
d26d9159 296
e191bb57 297 fOutput = AliRunLoader::GetTreeT("TPC", kTRUE,AliConfig::GetDefaultEventFolderName());
d26d9159 298 if (fOutput){
299 AliTPCtrack *iotrack= new AliTPCtrack;
300 fOutput->Branch("tracks","AliTPCtrack",&iotrack,32000,100);
301 delete iotrack;
302 }
91162307 303}
1c53abe2 304
d26d9159 305
91162307 306void AliTPCtrackerMI::SetIO(TTree * input, TTree * output, AliESD * event)
307{
1c53abe2 308
91162307 309 // set input
310 fNewIO = kFALSE;
311 fInput = 0;
312 fOutput = 0;
313 fSeedTree = 0;
314 fTreeDebug =0;
315 fInput = input;
316 if (input==0){
317 return;
318 }
319 //set output
320 fOutput = output;
321 if (output){
322 AliTPCtrack *iotrack= new AliTPCtrack;
323 // iotrack->fHelixIn = new TClonesArray("AliHelix");
324 //iotrack->fHelixOut = new TClonesArray("AliHelix");
325 fOutput->Branch("tracks","AliTPCtrack",&iotrack,32000,100);
326 delete iotrack;
327 }
328 if (output && (fDebug&2)){
329 //write the full seed information if specified in debug mode
330 //
331 fSeedTree = new TTree("Seeds","Seeds");
332 AliTPCseed * vseed = new AliTPCseed;
333 //
334 TClonesArray * arrtr = new TClonesArray("AliTPCTrackPoint",160);
335 arrtr->ExpandCreateFast(160);
336 TClonesArray * arre = new TClonesArray("AliTPCExactPoint",160);
337 //
b9671574 338 vseed->SetPoints(arrtr);
339 vseed->SetEPoints(arre);
91162307 340 // vseed->fClusterPoints = arrcl;
341 fSeedTree->Branch("seeds","AliTPCseed",&vseed,32000,99);
342 delete arrtr;
343 delete arre;
344 fTreeDebug = new TTree("trackDebug","trackDebug");
345 TClonesArray * arrd = new TClonesArray("AliTPCTrackPoint2",0);
346 fTreeDebug->Branch("debug",&arrd,32000,99);
1c53abe2 347 }
1c53abe2 348
1c53abe2 349
91162307 350 //set ESD event
351 fEvent = event;
352}
1c53abe2 353
d26d9159 354void AliTPCtrackerMI::FillESD(TObjArray* arr)
91162307 355{
47966a6d 356 //
357 //
358 //fill esds using updated tracks
91162307 359 if (fEvent){
360 // write tracks to the event
361 // store index of the track
d26d9159 362 Int_t nseed=arr->GetEntriesFast();
51ad6848 363 //FindKinks(arr,fEvent);
91162307 364 for (Int_t i=0; i<nseed; i++) {
d26d9159 365 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
91162307 366 if (!pt) continue;
51ad6848 367 pt->UpdatePoints();
eea478d3 368 // pt->PropagateTo(fParam->GetInnerRadiusLow());
369 if (pt->GetKinkIndex(0)<=0){ //don't propagate daughter tracks
370 pt->PropagateTo(fParam->GetInnerRadiusLow());
371 }
51ad6848 372
373 if (( pt->GetPoints()[2]- pt->GetPoints()[0])>5 && pt->GetPoints()[3]>0.8){
374 AliESDtrack iotrack;
375 iotrack.UpdateTrackParams(pt,AliESDtrack::kTPCin);
376 iotrack.SetTPCPoints(pt->GetPoints());
377 iotrack.SetKinkIndexes(pt->GetKinkIndexes());
81e97e0d 378 iotrack.SetV0Indexes(pt->GetV0Indexes());
379 // iotrack.SetTPCpid(pt->fTPCr);
51ad6848 380 //iotrack.SetTPCindex(i);
381 fEvent->AddTrack(&iotrack);
382 continue;
383 }
384
b9671574 385 if ( (pt->GetNumberOfClusters()>70)&& (Float_t(pt->GetNumberOfClusters())/Float_t(pt->GetNFoundable()))>0.55) {
d26d9159 386 AliESDtrack iotrack;
51ad6848 387 iotrack.UpdateTrackParams(pt,AliESDtrack::kTPCin);
388 iotrack.SetTPCPoints(pt->GetPoints());
d26d9159 389 //iotrack.SetTPCindex(i);
51ad6848 390 iotrack.SetKinkIndexes(pt->GetKinkIndexes());
81e97e0d 391 iotrack.SetV0Indexes(pt->GetV0Indexes());
392 // iotrack.SetTPCpid(pt->fTPCr);
d26d9159 393 fEvent->AddTrack(&iotrack);
a42a6bae 394 continue;
395 }
51ad6848 396 //
397 // short tracks - maybe decays
398
b9671574 399 if ( (pt->GetNumberOfClusters()>30) && (Float_t(pt->GetNumberOfClusters())/Float_t(pt->GetNFoundable()))>0.70) {
a42a6bae 400 Int_t found,foundable,shared;
401 pt->GetClusterStatistic(0,60,found, foundable,shared,kFALSE);
b9671574 402 if ( (found>20) && (pt->GetNShared()/float(pt->GetNumberOfClusters())<0.2)){
a42a6bae 403 AliESDtrack iotrack;
404 iotrack.UpdateTrackParams(pt,AliESDtrack::kTPCin);
405 //iotrack.SetTPCindex(i);
51ad6848 406 iotrack.SetTPCPoints(pt->GetPoints());
407 iotrack.SetKinkIndexes(pt->GetKinkIndexes());
81e97e0d 408 iotrack.SetV0Indexes(pt->GetV0Indexes());
409 //iotrack.SetTPCpid(pt->fTPCr);
a42a6bae 410 fEvent->AddTrack(&iotrack);
411 continue;
412 }
413 }
414
b9671574 415 if ( (pt->GetNumberOfClusters()>20) && (Float_t(pt->GetNumberOfClusters())/Float_t(pt->GetNFoundable()))>0.8) {
a42a6bae 416 Int_t found,foundable,shared;
417 pt->GetClusterStatistic(0,60,found, foundable,shared,kFALSE);
418 if (found<20) continue;
b9671574 419 if (pt->GetNShared()/float(pt->GetNumberOfClusters())>0.2) continue;
a42a6bae 420 //
421 AliESDtrack iotrack;
422 iotrack.UpdateTrackParams(pt,AliESDtrack::kTPCin);
51ad6848 423 iotrack.SetTPCPoints(pt->GetPoints());
424 iotrack.SetKinkIndexes(pt->GetKinkIndexes());
81e97e0d 425 iotrack.SetV0Indexes(pt->GetV0Indexes());
426 //iotrack.SetTPCpid(pt->fTPCr);
51ad6848 427 //iotrack.SetTPCindex(i);
428 fEvent->AddTrack(&iotrack);
429 continue;
430 }
431 // short tracks - secondaties
432 //
433 if ( (pt->GetNumberOfClusters()>30) ) {
434 Int_t found,foundable,shared;
435 pt->GetClusterStatistic(128,158,found, foundable,shared,kFALSE);
b9671574 436 if ( (found>20) && (pt->GetNShared()/float(pt->GetNumberOfClusters())<0.2) &&float(found)/float(foundable)>0.8){
51ad6848 437 AliESDtrack iotrack;
438 iotrack.UpdateTrackParams(pt,AliESDtrack::kTPCin);
439 iotrack.SetTPCPoints(pt->GetPoints());
440 iotrack.SetKinkIndexes(pt->GetKinkIndexes());
81e97e0d 441 iotrack.SetV0Indexes(pt->GetV0Indexes());
442 //iotrack.SetTPCpid(pt->fTPCr);
51ad6848 443 //iotrack.SetTPCindex(i);
444 fEvent->AddTrack(&iotrack);
445 continue;
446 }
447 }
448
449 if ( (pt->GetNumberOfClusters()>15)) {
450 Int_t found,foundable,shared;
451 pt->GetClusterStatistic(138,158,found, foundable,shared,kFALSE);
452 if (found<15) continue;
e7eb17e4 453 if (foundable<=0) continue;
b9671574 454 if (pt->GetNShared()/float(pt->GetNumberOfClusters())>0.2) continue;
51ad6848 455 if (float(found)/float(foundable)<0.8) continue;
456 //
457 AliESDtrack iotrack;
458 iotrack.UpdateTrackParams(pt,AliESDtrack::kTPCin);
459 iotrack.SetTPCPoints(pt->GetPoints());
460 iotrack.SetKinkIndexes(pt->GetKinkIndexes());
81e97e0d 461 iotrack.SetV0Indexes(pt->GetV0Indexes());
462 // iotrack.SetTPCpid(pt->fTPCr);
a42a6bae 463 //iotrack.SetTPCindex(i);
464 fEvent->AddTrack(&iotrack);
465 continue;
466 }
91162307 467 }
1c53abe2 468 }
51ad6848 469 printf("Number of filled ESDs-\t%d\n",fEvent->GetNumberOfTracks());
d26d9159 470}
471
47966a6d 472void AliTPCtrackerMI::WriteTracks(TTree * tree)
473{
d26d9159 474 //
47966a6d 475 // write tracks from seed array to selected tree
d26d9159 476 //
477 fOutput = tree;
478 if (fOutput){
479 AliTPCtrack *iotrack= new AliTPCtrack;
480 fOutput->Branch("tracks","AliTPCtrack",&iotrack,32000,100);
481 }
482 WriteTracks();
483}
484
485void AliTPCtrackerMI::WriteTracks()
486{
487 //
488 // write tracks to the given output tree -
489 // output specified with SetIO routine
490 if (!fSeeds) return;
491 if (!fOutput){
492 SetIO();
493 }
1c53abe2 494
91162307 495 if (fOutput){
496 AliTPCtrack *iotrack= 0;
497 Int_t nseed=fSeeds->GetEntriesFast();
982aff31 498 //for (Int_t i=0; i<nseed; i++) {
499 // iotrack= (AliTPCtrack*)fSeeds->UncheckedAt(i);
500 // if (iotrack) break;
501 //}
91162307 502 //TBranch * br = fOutput->Branch("tracks","AliTPCtrack",&iotrack,32000,100);
503 TBranch * br = fOutput->GetBranch("tracks");
504 br->SetAddress(&iotrack);
505 //
506 for (Int_t i=0; i<nseed; i++) {
507 AliTPCseed *pt=(AliTPCseed*)fSeeds->UncheckedAt(i);
508 if (!pt) continue;
982aff31 509 AliTPCtrack * track = new AliTPCtrack(*pt);
510 iotrack = track;
b9671574 511 pt->SetLab2(i);
91162307 512 // br->SetAddress(&iotrack);
513 fOutput->Fill();
982aff31 514 delete track;
91162307 515 iotrack =0;
516 }
982aff31 517 //fOutput->GetDirectory()->cd();
518 //fOutput->Write();
91162307 519 }
d26d9159 520 // delete iotrack;
521 //
91162307 522 if (fSeedTree){
523 //write the full seed information if specified in debug mode
524
525 AliTPCseed * vseed = new AliTPCseed;
526 //
527 TClonesArray * arrtr = new TClonesArray("AliTPCTrackPoint",160);
528 arrtr->ExpandCreateFast(160);
529 //TClonesArray * arrcl = new TClonesArray("AliTPCclusterMI",160);
530 //arrcl->ExpandCreateFast(160);
531 TClonesArray * arre = new TClonesArray("AliTPCExactPoint",160);
532 //
b9671574 533 vseed->SetPoints(arrtr);
534 vseed->SetEPoints(arre);
91162307 535 // vseed->fClusterPoints = arrcl;
536 //TBranch * brseed = seedtree->Branch("seeds","AliTPCseed",&vseed,32000,99);
537 TBranch * brseed = fSeedTree->GetBranch("seeds");
538
539 Int_t nseed=fSeeds->GetEntriesFast();
540
541 for (Int_t i=0; i<nseed; i++) {
542 AliTPCseed *pt=(AliTPCseed*)fSeeds->UncheckedAt(i);
543 if (!pt) continue;
b9671574 544 pt->SetPoints(arrtr);
91162307 545 // pt->fClusterPoints = arrcl;
b9671574 546 pt->SetEPoints(arre);
91162307 547 pt->RebuildSeed();
548 vseed = pt;
549 brseed->SetAddress(&vseed);
550 fSeedTree->Fill();
b9671574 551 pt->SetPoints(0);
552 pt->SetEPoints(0);
91162307 553 // pt->fClusterPoints = 0;
554 }
555 fSeedTree->Write();
556 if (fTreeDebug) fTreeDebug->Write();
557 }
1c53abe2 558
91162307 559}
1c53abe2 560
1c53abe2 561
1c53abe2 562
563
91162307 564Double_t AliTPCtrackerMI::ErrY2(AliTPCseed* seed, AliTPCclusterMI * cl){
565 //
566 //
567 //seed->SetErrorY2(0.1);
568 //return 0.1;
569 //calculate look-up table at the beginning
570 static Bool_t ginit = kFALSE;
571 static Float_t gnoise1,gnoise2,gnoise3;
572 static Float_t ggg1[10000];
573 static Float_t ggg2[10000];
574 static Float_t ggg3[10000];
575 static Float_t glandau1[10000];
576 static Float_t glandau2[10000];
577 static Float_t glandau3[10000];
578 //
579 static Float_t gcor01[500];
580 static Float_t gcor02[500];
581 static Float_t gcorp[500];
582 //
1c53abe2 583
91162307 584 //
585 if (ginit==kFALSE){
586 for (Int_t i=1;i<500;i++){
587 Float_t rsigma = float(i)/100.;
588 gcor02[i] = TMath::Max(0.78 +TMath::Exp(7.4*(rsigma-1.2)),0.6);
589 gcor01[i] = TMath::Max(0.72 +TMath::Exp(3.36*(rsigma-1.2)),0.6);
590 gcorp[i] = TMath::Max(TMath::Power((rsigma+0.5),1.5),1.2);
591 }
1c53abe2 592
91162307 593 //
594 for (Int_t i=3;i<10000;i++){
595 //
596 //
597 // inner sector
598 Float_t amp = float(i);
599 Float_t padlength =0.75;
600 gnoise1 = 0.0004/padlength;
601 Float_t nel = 0.268*amp;
602 Float_t nprim = 0.155*amp;
603 ggg1[i] = fParam->GetDiffT()*fParam->GetDiffT()*(2+0.001*nel/(padlength*padlength))/nel;
604 glandau1[i] = (2.+0.12*nprim)*0.5* (2.+nprim*nprim*0.001/(padlength*padlength))/nprim;
605 if (glandau1[i]>1) glandau1[i]=1;
606 glandau1[i]*=padlength*padlength/12.;
607 //
608 // outer short
609 padlength =1.;
610 gnoise2 = 0.0004/padlength;
611 nel = 0.3*amp;
612 nprim = 0.133*amp;
613 ggg2[i] = fParam->GetDiffT()*fParam->GetDiffT()*(2+0.0008*nel/(padlength*padlength))/nel;
614 glandau2[i] = (2.+0.12*nprim)*0.5*(2.+nprim*nprim*0.001/(padlength*padlength))/nprim;
615 if (glandau2[i]>1) glandau2[i]=1;
616 glandau2[i]*=padlength*padlength/12.;
617 //
618 //
619 // outer long
620 padlength =1.5;
621 gnoise3 = 0.0004/padlength;
622 nel = 0.3*amp;
623 nprim = 0.133*amp;
624 ggg3[i] = fParam->GetDiffT()*fParam->GetDiffT()*(2+0.0008*nel/(padlength*padlength))/nel;
625 glandau3[i] = (2.+0.12*nprim)*0.5*(2.+nprim*nprim*0.001/(padlength*padlength))/nprim;
626 if (glandau3[i]>1) glandau3[i]=1;
627 glandau3[i]*=padlength*padlength/12.;
628 //
629 }
630 ginit = kTRUE;
631 }
1c53abe2 632 //
633 //
91162307 634 //
635 Int_t amp = int(TMath::Abs(cl->GetQ()));
636 if (amp>9999) {
637 seed->SetErrorY2(1.);
638 return 1.;
639 }
1c53abe2 640 Float_t snoise2;
c9427e08 641 Float_t z = TMath::Abs(fParam->GetZLength()-TMath::Abs(seed->GetZ()));
91162307 642 Int_t ctype = cl->GetType();
b9671574 643 Float_t padlength= GetPadPitchLength(seed->GetRow());
3f82c4f2 644 Double_t angle2 = seed->GetSnp()*seed->GetSnp();
91162307 645 angle2 = angle2/(1-angle2);
646 //
647 //cluster "quality"
b9671574 648 Int_t rsigmay = int(100.*cl->GetSigmaY2()/(seed->GetCurrentSigmaY2()));
91162307 649 Float_t res;
1c53abe2 650 //
1c53abe2 651 if (fSectors==fInnerSec){
91162307 652 snoise2 = gnoise1;
653 res = ggg1[amp]*z+glandau1[amp]*angle2;
654 if (ctype==0) res *= gcor01[rsigmay];
655 if ((ctype>0)){
656 res+=0.002;
657 res*= gcorp[rsigmay];
658 }
1c53abe2 659 }
660 else {
91162307 661 if (padlength<1.1){
662 snoise2 = gnoise2;
663 res = ggg2[amp]*z+glandau2[amp]*angle2;
664 if (ctype==0) res *= gcor02[rsigmay];
665 if ((ctype>0)){
666 res+=0.002;
667 res*= gcorp[rsigmay];
668 }
669 }
670 else{
671 snoise2 = gnoise3;
672 res = ggg3[amp]*z+glandau3[amp]*angle2;
673 if (ctype==0) res *= gcor02[rsigmay];
674 if ((ctype>0)){
675 res+=0.002;
676 res*= gcorp[rsigmay];
677 }
678 }
679 }
1c53abe2 680
91162307 681 if (ctype<0){
682 res+=0.005;
683 res*=2.4; // overestimate error 2 times
684 }
685 res+= snoise2;
686
1c53abe2 687 if (res<2*snoise2)
91162307 688 res = 2*snoise2;
689
690 seed->SetErrorY2(res);
1c53abe2 691 return res;
1c53abe2 692
693
91162307 694}
c9427e08 695
696
697
91162307 698Double_t AliTPCtrackerMI::ErrZ2(AliTPCseed* seed, AliTPCclusterMI * cl){
699 //
700 //
701 //seed->SetErrorY2(0.1);
702 //return 0.1;
703 //calculate look-up table at the beginning
704 static Bool_t ginit = kFALSE;
705 static Float_t gnoise1,gnoise2,gnoise3;
706 static Float_t ggg1[10000];
707 static Float_t ggg2[10000];
708 static Float_t ggg3[10000];
709 static Float_t glandau1[10000];
710 static Float_t glandau2[10000];
711 static Float_t glandau3[10000];
712 //
713 static Float_t gcor01[1000];
714 static Float_t gcor02[1000];
715 static Float_t gcorp[1000];
1627d1c4 716 //
1627d1c4 717
91162307 718 //
719 if (ginit==kFALSE){
720 for (Int_t i=1;i<1000;i++){
721 Float_t rsigma = float(i)/100.;
722 gcor02[i] = TMath::Max(0.81 +TMath::Exp(6.8*(rsigma-1.2)),0.6);
723 gcor01[i] = TMath::Max(0.72 +TMath::Exp(2.04*(rsigma-1.2)),0.6);
724 gcorp[i] = TMath::Max(TMath::Power((rsigma+0.5),1.5),1.2);
725 }
1c53abe2 726
91162307 727 //
728 for (Int_t i=3;i<10000;i++){
729 //
730 //
731 // inner sector
732 Float_t amp = float(i);
733 Float_t padlength =0.75;
734 gnoise1 = 0.0004/padlength;
735 Float_t nel = 0.268*amp;
736 Float_t nprim = 0.155*amp;
737 ggg1[i] = fParam->GetDiffT()*fParam->GetDiffT()*(2+0.001*nel/(padlength*padlength))/nel;
738 glandau1[i] = (2.+0.12*nprim)*0.5* (2.+nprim*nprim*0.001/(padlength*padlength))/nprim;
739 if (glandau1[i]>1) glandau1[i]=1;
740 glandau1[i]*=padlength*padlength/12.;
741 //
742 // outer short
743 padlength =1.;
744 gnoise2 = 0.0004/padlength;
745 nel = 0.3*amp;
746 nprim = 0.133*amp;
747 ggg2[i] = fParam->GetDiffT()*fParam->GetDiffT()*(2+0.0008*nel/(padlength*padlength))/nel;
748 glandau2[i] = (2.+0.12*nprim)*0.5*(2.+nprim*nprim*0.001/(padlength*padlength))/nprim;
749 if (glandau2[i]>1) glandau2[i]=1;
750 glandau2[i]*=padlength*padlength/12.;
751 //
752 //
753 // outer long
754 padlength =1.5;
755 gnoise3 = 0.0004/padlength;
756 nel = 0.3*amp;
757 nprim = 0.133*amp;
758 ggg3[i] = fParam->GetDiffT()*fParam->GetDiffT()*(2+0.0008*nel/(padlength*padlength))/nel;
759 glandau3[i] = (2.+0.12*nprim)*0.5*(2.+nprim*nprim*0.001/(padlength*padlength))/nprim;
760 if (glandau3[i]>1) glandau3[i]=1;
761 glandau3[i]*=padlength*padlength/12.;
762 //
763 }
764 ginit = kTRUE;
765 }
766 //
767 //
768 //
769 Int_t amp = int(TMath::Abs(cl->GetQ()));
770 if (amp>9999) {
771 seed->SetErrorY2(1.);
772 return 1.;
773 }
774 Float_t snoise2;
775 Float_t z = TMath::Abs(fParam->GetZLength()-TMath::Abs(seed->GetZ()));
776 Int_t ctype = cl->GetType();
b9671574 777 Float_t padlength= GetPadPitchLength(seed->GetRow());
91162307 778 //
3f82c4f2 779 Double_t angle2 = seed->GetSnp()*seed->GetSnp();
91162307 780 // if (angle2<0.6) angle2 = 0.6;
781 angle2 = seed->GetTgl()*seed->GetTgl()*(1+angle2/(1-angle2));
782 //
783 //cluster "quality"
b9671574 784 Int_t rsigmaz = int(100.*cl->GetSigmaZ2()/(seed->GetCurrentSigmaZ2()));
91162307 785 Float_t res;
786 //
787 if (fSectors==fInnerSec){
788 snoise2 = gnoise1;
789 res = ggg1[amp]*z+glandau1[amp]*angle2;
790 if (ctype==0) res *= gcor01[rsigmaz];
791 if ((ctype>0)){
792 res+=0.002;
793 res*= gcorp[rsigmaz];
794 }
795 }
796 else {
797 if (padlength<1.1){
798 snoise2 = gnoise2;
799 res = ggg2[amp]*z+glandau2[amp]*angle2;
800 if (ctype==0) res *= gcor02[rsigmaz];
801 if ((ctype>0)){
802 res+=0.002;
803 res*= gcorp[rsigmaz];
804 }
805 }
806 else{
807 snoise2 = gnoise3;
808 res = ggg3[amp]*z+glandau3[amp]*angle2;
809 if (ctype==0) res *= gcor02[rsigmaz];
810 if ((ctype>0)){
811 res+=0.002;
812 res*= gcorp[rsigmaz];
813 }
814 }
815 }
816
817 if (ctype<0){
818 res+=0.002;
819 res*=1.3;
820 }
821 if ((ctype<0) &&amp<70){
822 res+=0.002;
823 res*=1.3;
824 }
825 res += snoise2;
826 if (res<2*snoise2)
827 res = 2*snoise2;
828 if (res>3) res =3;
829 seed->SetErrorZ2(res);
830 return res;
831}
832
833
834
835/*
836Double_t AliTPCtrackerMI::ErrZ2(AliTPCseed* seed, AliTPCclusterMI * cl){
837 //
838 //
839 //seed->SetErrorZ2(0.1);
840 //return 0.1;
841
842 Float_t snoise2;
843 Float_t z = TMath::Abs(fParam->GetZLength()-TMath::Abs(seed->GetZ()));
844 //
845 Float_t rsigmaz = cl->GetSigmaZ2()/(seed->fCurrentSigmaZ2);
846 Int_t ctype = cl->GetType();
847 Float_t amp = TMath::Abs(cl->GetQ());
848
849 Float_t nel;
850 Float_t nprim;
851 //
852 Float_t landau=2 ; //landau fluctuation part
853 Float_t gg=2; // gg fluctuation part
854 Float_t padlength= GetPadPitchLength(seed->GetX());
855
856 if (fSectors==fInnerSec){
857 snoise2 = 0.0004/padlength;
858 nel = 0.268*amp;
859 nprim = 0.155*amp;
860 gg = (2+0.001*nel/(padlength*padlength))/nel;
861 landau = (2.+0.12*nprim)*0.5*(2.+nprim*nprim*0.001/(padlength*padlength))/nprim;
862 if (landau>1) landau=1;
863 }
864 else {
865 snoise2 = 0.0004/padlength;
866 nel = 0.3*amp;
867 nprim = 0.133*amp;
868 gg = (2+0.0008*nel/(padlength*padlength))/nel;
869 landau = (2.+0.12*nprim)*0.5*(2.+nprim*nprim*0.001/(padlength*padlength))/nprim;
870 if (landau>1) landau=1;
871 }
872 Float_t sdiff = gg*fParam->GetDiffT()*fParam->GetDiffT()*z;
873
874 //
875 Float_t angle2 = seed->GetSnp()*seed->GetSnp();
876 angle2 = TMath::Sqrt((1-angle2));
877 if (angle2<0.6) angle2 = 0.6;
878 //angle2 = 1;
879
880 Float_t angle = seed->GetTgl()/angle2;
881 Float_t angular = landau*angle*angle*padlength*padlength/12.;
882 Float_t res = sdiff + angular;
883
884
885 if ((ctype==0) && (fSectors ==fOuterSec))
886 res *= 0.81 +TMath::Exp(6.8*(rsigmaz-1.2));
887
888 if ((ctype==0) && (fSectors ==fInnerSec))
889 res *= 0.72 +TMath::Exp(2.04*(rsigmaz-1.2));
890
891 if ((ctype>0)){
892 res+=0.005;
893 res*= TMath::Power(rsigmaz+0.5,1.5); //0.31+0.147*ctype;
894 }
895 if (ctype<0){
896 res+=0.002;
897 res*=1.3;
898 }
899 if ((ctype<0) &&amp<70){
900 res+=0.002;
901 res*=1.3;
902 }
903 res += snoise2;
904 if (res<2*snoise2)
905 res = 2*snoise2;
906
907 seed->SetErrorZ2(res);
908 return res;
909}
910*/
911
912
913
1c53abe2 914
c9427e08 915void AliTPCtrackerMI::RotateToLocal(AliTPCseed *seed)
916{
917 //rotate to track "local coordinata
918 Float_t x = seed->GetX();
919 Float_t y = seed->GetY();
920 Float_t ymax = x*TMath::Tan(0.5*fSectors->GetAlpha());
91162307 921
c9427e08 922 if (y > ymax) {
b9671574 923 seed->SetRelativeSector((seed->GetRelativeSector()+1) % fN);
c9427e08 924 if (!seed->Rotate(fSectors->GetAlpha()))
925 return;
926 } else if (y <-ymax) {
b9671574 927 seed->SetRelativeSector((seed->GetRelativeSector()-1+fN) % fN);
c9427e08 928 if (!seed->Rotate(-fSectors->GetAlpha()))
929 return;
930 }
1c53abe2 931
c9427e08 932}
1c53abe2 933
934
935
1c53abe2 936//_____________________________________________________________________________
b67e07dc 937Double_t AliTPCtrackerMI::F1old(Double_t x1,Double_t y1,
1c53abe2 938 Double_t x2,Double_t y2,
939 Double_t x3,Double_t y3)
940{
941 //-----------------------------------------------------------------
942 // Initial approximation of the track curvature
943 //-----------------------------------------------------------------
944 Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1);
945 Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)-
946 (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2));
947 Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)-
948 (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1));
949
950 Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b);
91162307 951 if ( xr*xr+yr*yr<=0.00000000000001) return 100;
1c53abe2 952 return -xr*yr/sqrt(xr*xr+yr*yr);
953}
954
955
91162307 956
1c53abe2 957//_____________________________________________________________________________
b67e07dc 958Double_t AliTPCtrackerMI::F1(Double_t x1,Double_t y1,
91162307 959 Double_t x2,Double_t y2,
960 Double_t x3,Double_t y3)
961{
962 //-----------------------------------------------------------------
963 // Initial approximation of the track curvature
964 //-----------------------------------------------------------------
965 x3 -=x1;
966 x2 -=x1;
967 y3 -=y1;
968 y2 -=y1;
969 //
970 Double_t det = x3*y2-x2*y3;
971 if (det==0) {
972 return 100;
973 }
974 //
975 Double_t u = 0.5* (x2*(x2-x3)+y2*(y2-y3))/det;
976 Double_t x0 = x3*0.5-y3*u;
977 Double_t y0 = y3*0.5+x3*u;
978 Double_t c2 = 1/TMath::Sqrt(x0*x0+y0*y0);
979 if (det<0) c2*=-1;
980 return c2;
981}
982
983
b67e07dc 984Double_t AliTPCtrackerMI::F2(Double_t x1,Double_t y1,
1c53abe2 985 Double_t x2,Double_t y2,
986 Double_t x3,Double_t y3)
91162307 987{
988 //-----------------------------------------------------------------
989 // Initial approximation of the track curvature
990 //-----------------------------------------------------------------
991 x3 -=x1;
992 x2 -=x1;
993 y3 -=y1;
994 y2 -=y1;
995 //
996 Double_t det = x3*y2-x2*y3;
997 if (det==0) {
998 return 100;
999 }
1000 //
1001 Double_t u = 0.5* (x2*(x2-x3)+y2*(y2-y3))/det;
1002 Double_t x0 = x3*0.5-y3*u;
1003 Double_t y0 = y3*0.5+x3*u;
1004 Double_t c2 = 1/TMath::Sqrt(x0*x0+y0*y0);
1005 if (det<0) c2*=-1;
1006 x0+=x1;
1007 x0*=c2;
1008 return x0;
1009}
1010
1011
1012
1013//_____________________________________________________________________________
b67e07dc 1014Double_t AliTPCtrackerMI::F2old(Double_t x1,Double_t y1,
91162307 1015 Double_t x2,Double_t y2,
1016 Double_t x3,Double_t y3)
1c53abe2 1017{
1018 //-----------------------------------------------------------------
1019 // Initial approximation of the track curvature times center of curvature
1020 //-----------------------------------------------------------------
1021 Double_t d=(x2-x1)*(y3-y2)-(x3-x2)*(y2-y1);
1022 Double_t a=0.5*((y3-y2)*(y2*y2-y1*y1+x2*x2-x1*x1)-
1023 (y2-y1)*(y3*y3-y2*y2+x3*x3-x2*x2));
1024 Double_t b=0.5*((x2-x1)*(y3*y3-y2*y2+x3*x3-x2*x2)-
1025 (x3-x2)*(y2*y2-y1*y1+x2*x2-x1*x1));
1026
1027 Double_t xr=TMath::Abs(d/(d*x1-a)), yr=d/(d*y1-b);
1028
1029 return -a/(d*y1-b)*xr/sqrt(xr*xr+yr*yr);
1030}
1031
1032//_____________________________________________________________________________
b67e07dc 1033Double_t AliTPCtrackerMI::F3(Double_t x1,Double_t y1,
1c53abe2 1034 Double_t x2,Double_t y2,
1035 Double_t z1,Double_t z2)
1036{
1037 //-----------------------------------------------------------------
1038 // Initial approximation of the tangent of the track dip angle
1039 //-----------------------------------------------------------------
1040 return (z1 - z2)/sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
1041}
1042
1043
b67e07dc 1044Double_t AliTPCtrackerMI::F3n(Double_t x1,Double_t y1,
91162307 1045 Double_t x2,Double_t y2,
1046 Double_t z1,Double_t z2, Double_t c)
1c53abe2 1047{
91162307 1048 //-----------------------------------------------------------------
1049 // Initial approximation of the tangent of the track dip angle
1050 //-----------------------------------------------------------------
1051
1052 // Double_t angle1;
1053
1054 //angle1 = (z1-z2)*c/(TMath::ASin(c*x1-ni)-TMath::ASin(c*x2-ni));
1c53abe2 1055 //
91162307 1056 Double_t d = TMath::Sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
1057 if (TMath::Abs(d*c*0.5)>1) return 0;
1058 // Double_t angle2 = TMath::ASin(d*c*0.5);
b67e07dc 1059 // Double_t angle2 = AliTPCFastMath::FastAsin(d*c*0.5);
1060 Double_t angle2 = (d*c*0.5>0.1)? TMath::ASin(d*c*0.5): AliTPCFastMath::FastAsin(d*c*0.5);
91162307 1061
1062 angle2 = (z1-z2)*c/(angle2*2.);
1063 return angle2;
1064}
1065
1066Bool_t AliTPCtrackerMI::GetProlongation(Double_t x1, Double_t x2, Double_t x[5], Double_t &y, Double_t &z)
1067{//-----------------------------------------------------------------
1068 // This function find proloncation of a track to a reference plane x=x2.
1069 //-----------------------------------------------------------------
1070
1071 Double_t dx=x2-x1;
1072
1073 if (TMath::Abs(x[4]*x1 - x[2]) >= 0.999) {
1074 return kFALSE;
1c53abe2 1075 }
f8aae377 1076
91162307 1077 Double_t c1=x[4]*x1 - x[2], r1=sqrt(1.- c1*c1);
1078 Double_t c2=x[4]*x2 - x[2], r2=sqrt(1.- c2*c2);
1079 y = x[0];
1080 z = x[1];
1081
1082 Double_t dy = dx*(c1+c2)/(r1+r2);
1083 Double_t dz = 0;
1084 //
1085 Double_t delta = x[4]*dx*(c1+c2)/(c1*r2 + c2*r1);
1086
1087 if (TMath::Abs(delta)>0.01){
1088 dz = x[3]*TMath::ASin(delta)/x[4];
1089 }else{
b67e07dc 1090 dz = x[3]*AliTPCFastMath::FastAsin(delta)/x[4];
91162307 1091 }
1092
b67e07dc 1093 //dz = x[3]*AliTPCFastMath::FastAsin(delta)/x[4];
f8aae377 1094
91162307 1095 y+=dy;
1096 z+=dz;
1097
1098 return kTRUE;
1c53abe2 1099}
1100
d26d9159 1101Int_t AliTPCtrackerMI::LoadClusters (TTree *tree)
1102{
1103 //
1104 //
1105 fInput = tree;
1106 return LoadClusters();
1107}
91162307 1108
1109Int_t AliTPCtrackerMI::LoadClusters()
1c53abe2 1110{
1111 //
1112 // load clusters to the memory
91162307 1113 AliTPCClustersRow *clrow= new AliTPCClustersRow;
1114 clrow->SetClass("AliTPCclusterMI");
1115 clrow->SetArray(0);
1116 clrow->GetArray()->ExpandCreateFast(10000);
1117 //
1118 // TTree * tree = fClustersArray.GetTree();
1119
1120 TTree * tree = fInput;
1121 TBranch * br = tree->GetBranch("Segment");
1122 br->SetAddress(&clrow);
1123 //
1124 Int_t j=Int_t(tree->GetEntries());
1c53abe2 1125 for (Int_t i=0; i<j; i++) {
91162307 1126 br->GetEntry(i);
1127 //
1128 Int_t sec,row;
1129 fParam->AdjustSectorRow(clrow->GetID(),sec,row);
0201b65c 1130 for (Int_t icl=0; icl<clrow->GetArray()->GetEntriesFast(); icl++){
1131 Transform((AliCluster*)(clrow->GetArray()->At(icl)));
1132 }
91162307 1133 //
1134 AliTPCRow * tpcrow=0;
1135 Int_t left=0;
1136 if (sec<fkNIS*2){
1137 tpcrow = &(fInnerSec[sec%fkNIS][row]);
1138 left = sec/fkNIS;
1139 }
1140 else{
1141 tpcrow = &(fOuterSec[(sec-fkNIS*2)%fkNOS][row]);
1142 left = (sec-fkNIS*2)/fkNOS;
1143 }
1144 if (left ==0){
b9671574 1145 tpcrow->SetN1(clrow->GetArray()->GetEntriesFast());
1146 tpcrow->SetClusters1(new AliTPCclusterMI[tpcrow->GetN1()]);
1147 for (Int_t i=0;i<tpcrow->GetN1();i++)
1148 tpcrow->SetCluster1(i, *(AliTPCclusterMI*)(clrow->GetArray()->At(i)));
91162307 1149 }
1150 if (left ==1){
b9671574 1151 tpcrow->SetN2(clrow->GetArray()->GetEntriesFast());
1152 tpcrow->SetClusters2(new AliTPCclusterMI[tpcrow->GetN2()]);
1153 for (Int_t i=0;i<tpcrow->GetN2();i++)
1154 tpcrow->SetCluster2(i,*(AliTPCclusterMI*)(clrow->GetArray()->At(i)));
91162307 1155 }
1c53abe2 1156 }
91162307 1157 //
1158 delete clrow;
1159 LoadOuterSectors();
1160 LoadInnerSectors();
1161 return 0;
1c53abe2 1162}
1163
1164
91162307 1165void AliTPCtrackerMI::UnloadClusters()
1166{
1167 //
1168 // unload clusters from the memory
1169 //
1170 Int_t nrows = fOuterSec->GetNRows();
1171 for (Int_t sec = 0;sec<fkNOS;sec++)
1172 for (Int_t row = 0;row<nrows;row++){
1173 AliTPCRow* tpcrow = &(fOuterSec[sec%fkNOS][row]);
982aff31 1174 // if (tpcrow){
1175 // if (tpcrow->fClusters1) delete []tpcrow->fClusters1;
1176 // if (tpcrow->fClusters2) delete []tpcrow->fClusters2;
1177 //}
1178 tpcrow->ResetClusters();
1c53abe2 1179 }
91162307 1180 //
1181 nrows = fInnerSec->GetNRows();
1182 for (Int_t sec = 0;sec<fkNIS;sec++)
1183 for (Int_t row = 0;row<nrows;row++){
1184 AliTPCRow* tpcrow = &(fInnerSec[sec%fkNIS][row]);
982aff31 1185 //if (tpcrow){
1186 // if (tpcrow->fClusters1) delete []tpcrow->fClusters1;
1187 //if (tpcrow->fClusters2) delete []tpcrow->fClusters2;
1188 //}
1189 tpcrow->ResetClusters();
91162307 1190 }
1191
1192 return ;
1c53abe2 1193}
1194
0201b65c 1195void AliTPCtrackerMI::Transform(AliCluster * cluster){
1196 //
1197 //
1198 //
1199 //if (!fParam->IsGeoRead()) fParam->ReadGeoMatrices();
1200 TGeoHMatrix *mat = fParam->GetClusterMatrix(cluster->GetDetector());
e7eb17e4 1201 //TGeoHMatrix mat;
0201b65c 1202 Double_t pos[3]= {cluster->GetX(),cluster->GetY(),cluster->GetZ()};
1203 Double_t posC[3];
e7eb17e4 1204 //mat.LocalToMaster(pos,posC);
0201b65c 1205 mat->LocalToMaster(pos,posC);
1206 cluster->SetX(posC[0]);
1207 cluster->SetY(posC[1]);
1208 cluster->SetZ(posC[2]);
1209}
1c53abe2 1210
1211//_____________________________________________________________________________
91162307 1212Int_t AliTPCtrackerMI::LoadOuterSectors() {
1c53abe2 1213 //-----------------------------------------------------------------
91162307 1214 // This function fills outer TPC sectors with clusters.
1c53abe2 1215 //-----------------------------------------------------------------
91162307 1216 Int_t nrows = fOuterSec->GetNRows();
1217 UInt_t index=0;
1218 for (Int_t sec = 0;sec<fkNOS;sec++)
1219 for (Int_t row = 0;row<nrows;row++){
1220 AliTPCRow* tpcrow = &(fOuterSec[sec%fkNOS][row]);
1221 Int_t sec2 = sec+2*fkNIS;
1222 //left
b9671574 1223 Int_t ncl = tpcrow->GetN1();
91162307 1224 while (ncl--) {
b9671574 1225 AliTPCclusterMI *c= (tpcrow->GetCluster1(ncl));
91162307 1226 index=(((sec2<<8)+row)<<16)+ncl;
1227 tpcrow->InsertCluster(c,index);
1228 }
1229 //right
b9671574 1230 ncl = tpcrow->GetN2();
91162307 1231 while (ncl--) {
b9671574 1232 AliTPCclusterMI *c= (tpcrow->GetCluster2(ncl));
91162307 1233 index=((((sec2+fkNOS)<<8)+row)<<16)+ncl;
1234 tpcrow->InsertCluster(c,index);
1235 }
1236 //
1237 // write indexes for fast acces
1238 //
1239 for (Int_t i=0;i<510;i++)
b9671574 1240 tpcrow->SetFastCluster(i,-1);
91162307 1241 for (Int_t i=0;i<tpcrow->GetN();i++){
1242 Int_t zi = Int_t((*tpcrow)[i]->GetZ()+255.);
b9671574 1243 tpcrow->SetFastCluster(zi,i); // write index
91162307 1244 }
1245 Int_t last = 0;
1246 for (Int_t i=0;i<510;i++){
b9671574 1247 if (tpcrow->GetFastCluster(i)<0)
1248 tpcrow->SetFastCluster(i,last);
91162307 1249 else
b9671574 1250 last = tpcrow->GetFastCluster(i);
91162307 1251 }
1252 }
1253 fN=fkNOS;
1254 fSectors=fOuterSec;
1255 return 0;
1256}
1257
1258
1259//_____________________________________________________________________________
1260Int_t AliTPCtrackerMI::LoadInnerSectors() {
1261 //-----------------------------------------------------------------
1262 // This function fills inner TPC sectors with clusters.
1263 //-----------------------------------------------------------------
1264 Int_t nrows = fInnerSec->GetNRows();
1265 UInt_t index=0;
1266 for (Int_t sec = 0;sec<fkNIS;sec++)
1267 for (Int_t row = 0;row<nrows;row++){
1268 AliTPCRow* tpcrow = &(fInnerSec[sec%fkNIS][row]);
1269 //
1270 //left
b9671574 1271 Int_t ncl = tpcrow->GetN1();
91162307 1272 while (ncl--) {
b9671574 1273 AliTPCclusterMI *c= (tpcrow->GetCluster1(ncl));
91162307 1274 index=(((sec<<8)+row)<<16)+ncl;
1275 tpcrow->InsertCluster(c,index);
1276 }
1277 //right
b9671574 1278 ncl = tpcrow->GetN2();
91162307 1279 while (ncl--) {
b9671574 1280 AliTPCclusterMI *c= (tpcrow->GetCluster2(ncl));
91162307 1281 index=((((sec+fkNIS)<<8)+row)<<16)+ncl;
1282 tpcrow->InsertCluster(c,index);
1283 }
1284 //
1285 // write indexes for fast acces
1286 //
1287 for (Int_t i=0;i<510;i++)
b9671574 1288 tpcrow->SetFastCluster(i,-1);
91162307 1289 for (Int_t i=0;i<tpcrow->GetN();i++){
1290 Int_t zi = Int_t((*tpcrow)[i]->GetZ()+255.);
b9671574 1291 tpcrow->SetFastCluster(zi,i); // write index
91162307 1292 }
1293 Int_t last = 0;
1294 for (Int_t i=0;i<510;i++){
b9671574 1295 if (tpcrow->GetFastCluster(i)<0)
1296 tpcrow->SetFastCluster(i,last);
91162307 1297 else
b9671574 1298 last = tpcrow->GetFastCluster(i);
91162307 1299 }
1c53abe2 1300
91162307 1301 }
1302
1c53abe2 1303 fN=fkNIS;
1304 fSectors=fInnerSec;
91162307 1305 return 0;
1306}
1307
1308
1309
1310//_________________________________________________________________________
1311AliTPCclusterMI *AliTPCtrackerMI::GetClusterMI(Int_t index) const {
1312 //--------------------------------------------------------------------
1313 // Return pointer to a given cluster
1314 //--------------------------------------------------------------------
e7eb17e4 1315 if (index<0) return 0; // no cluster
91162307 1316 Int_t sec=(index&0xff000000)>>24;
1317 Int_t row=(index&0x00ff0000)>>16;
d26d9159 1318 Int_t ncl=(index&0x00007fff)>>00;
91162307 1319
1320 const AliTPCRow * tpcrow=0;
1321 AliTPCclusterMI * clrow =0;
3da363a1 1322
ad23441a 1323 if (sec<0 || sec>=fkNIS*4) {
1324 AliWarning(Form("Wrong sector %d",sec));
1325 return 0x0;
1326 }
1327
91162307 1328 if (sec<fkNIS*2){
1329 tpcrow = &(fInnerSec[sec%fkNIS][row]);
3da363a1 1330 if (tpcrow==0) return 0;
1331
1332 if (sec<fkNIS) {
b9671574 1333 if (tpcrow->GetN1()<=ncl) return 0;
1334 clrow = tpcrow->GetClusters1();
3da363a1 1335 }
1336 else {
b9671574 1337 if (tpcrow->GetN2()<=ncl) return 0;
1338 clrow = tpcrow->GetClusters2();
3da363a1 1339 }
91162307 1340 }
3da363a1 1341 else {
91162307 1342 tpcrow = &(fOuterSec[(sec-fkNIS*2)%fkNOS][row]);
3da363a1 1343 if (tpcrow==0) return 0;
1344
1345 if (sec-2*fkNIS<fkNOS) {
b9671574 1346 if (tpcrow->GetN1()<=ncl) return 0;
1347 clrow = tpcrow->GetClusters1();
3da363a1 1348 }
1349 else {
b9671574 1350 if (tpcrow->GetN2()<=ncl) return 0;
1351 clrow = tpcrow->GetClusters2();
3da363a1 1352 }
91162307 1353 }
3da363a1 1354
91162307 1355 return &(clrow[ncl]);
1356
1c53abe2 1357}
1358
91162307 1359
1360
1c53abe2 1361Int_t AliTPCtrackerMI::FollowToNext(AliTPCseed& t, Int_t nr) {
1362 //-----------------------------------------------------------------
1363 // This function tries to find a track prolongation to next pad row
1364 //-----------------------------------------------------------------
1c53abe2 1365 //
91162307 1366 Double_t x= GetXrow(nr), ymax=GetMaxY(nr);
4d158c36 1367 AliTPCclusterMI *cl=0;
1368 Int_t tpcindex= t.GetClusterIndex2(nr);
1369 //
1370 // update current shape info every 5 pad-row
1371 // if ( (nr%5==0) || t.GetNumberOfClusters()<2 || (t.fCurrentSigmaY2<0.0001) ){
1372 GetShape(&t,nr);
1373 //}
1374 //
1375 if (fIteration>0 && tpcindex>=-1){ //if we have already clusters
1376 //
1377 if (tpcindex==-1) return 0; //track in dead zone
1378 if (tpcindex>0){ //
b9671574 1379 cl = t.GetClusterPointer(nr);
e0656451 1380 if ( (cl==0) ) cl = GetClusterMI(tpcindex);
b9671574 1381 t.SetCurrentClusterIndex1(tpcindex);
4d158c36 1382 }
1383 if (cl){
1384 Int_t relativesector = ((tpcindex&0xff000000)>>24)%18; // if previously accepted cluster in different sector
1385 Float_t angle = relativesector*fSectors->GetAlpha()+fSectors->GetAlphaShift();
1386 //
1387 if (angle<-TMath::Pi()) angle += 2*TMath::Pi();
1388 if (angle>=TMath::Pi()) angle -= 2*TMath::Pi();
1389
1390 if (TMath::Abs(angle-t.GetAlpha())>0.001){
1391 Double_t rotation = angle-t.GetAlpha();
b9671574 1392 t.SetRelativeSector(relativesector);
3f82c4f2 1393 if (!t.Rotate(rotation)) return 0;
4d158c36 1394 }
3f82c4f2 1395 if (!t.PropagateTo(x)) return 0;
4d158c36 1396 //
b9671574 1397 t.SetCurrentCluster(cl);
1398 t.SetRow(nr);
1399 Int_t accept = AcceptCluster(&t,t.GetCurrentCluster(),1.);
4d158c36 1400 if ((tpcindex&0x8000)==0) accept =0;
1401 if (accept<3) {
1402 //if founded cluster is acceptible
1403 if (cl->IsUsed(11)) { // id cluster is shared inrease uncertainty
b9671574 1404 t.SetErrorY2(t.GetErrorY2()+0.03);
1405 t.SetErrorZ2(t.GetErrorZ2()+0.03);
1406 t.SetErrorY2(t.GetErrorY2()*3);
1407 t.SetErrorZ2(t.GetErrorZ2()*3);
4d158c36 1408 }
b9671574 1409 t.SetNFoundable(t.GetNFoundable()+1);
4d158c36 1410 UpdateTrack(&t,accept);
1411 return 1;
1412 }
1413 }
1627d1c4 1414 }
3f82c4f2 1415 if (TMath::Abs(t.GetSnp())>AliTPCReconstructor::GetMaxSnpTracker()) return 0; // cut on angle
1416 if (fIteration>1){
1417 // not look for new cluster during refitting
b9671574 1418 t.SetNFoundable(t.GetNFoundable()+1);
3f82c4f2 1419 return 0;
1420 }
91162307 1421 //
4d158c36 1422 UInt_t index=0;
ca142b1f 1423 // if (TMath::Abs(t.GetSnp())>0.95 || TMath::Abs(x*t.GetC()-t.GetEta())>0.95) return 0;// patch 28 fev 06
4d158c36 1424 Double_t y=t.GetYat(x);
91162307 1425 if (TMath::Abs(y)>ymax){
1426 if (y > ymax) {
b9671574 1427 t.SetRelativeSector((t.GetRelativeSector()+1) % fN);
91162307 1428 if (!t.Rotate(fSectors->GetAlpha()))
1429 return 0;
1430 } else if (y <-ymax) {
b9671574 1431 t.SetRelativeSector((t.GetRelativeSector()-1+fN) % fN);
91162307 1432 if (!t.Rotate(-fSectors->GetAlpha()))
1433 return 0;
1434 }
4d158c36 1435 //return 1;
91162307 1436 }
1437 //
4d158c36 1438 if (!t.PropagateTo(x)) {
b9671574 1439 if (fIteration==0) t.SetRemoval(10);
4d158c36 1440 return 0;
91162307 1441 }
4d158c36 1442 y=t.GetY();
1443 Double_t z=t.GetZ();
1444 //
a3232aae 1445
b9671574 1446 if (!IsActive(t.GetRelativeSector(),nr)) {
1447 t.SetInDead(kTRUE);
a3232aae 1448 t.SetClusterIndex2(nr,-1);
1449 return 0;
1450 }
1451 //AliInfo(Form("A - Sector%d phi %f - alpha %f", t.fRelativeSector,y/x, t.GetAlpha()));
b9671574 1452 Bool_t isActive = IsActive(t.GetRelativeSector(),nr);
1453 Bool_t isActive2 = (nr>=fInnerSec->GetNRows()) ? fOuterSec[t.GetRelativeSector()][nr-fInnerSec->GetNRows()].GetN()>0:fInnerSec[t.GetRelativeSector()][nr].GetN()>0;
a3232aae 1454
1455 if (!isActive || !isActive2) return 0;
1456
b9671574 1457 const AliTPCRow &krow=GetRow(t.GetRelativeSector(),nr);
91162307 1458 if ( (t.GetSigmaY2()<0) || t.GetSigmaZ2()<0) return 0;
1459 Double_t roady =1.;
1460 Double_t roadz = 1.;
1461 //
b9671574 1462 if (TMath::Abs(TMath::Abs(y)-ymax)<krow.GetDeadZone()){
1463 t.SetInDead(kTRUE);
91162307 1464 t.SetClusterIndex2(nr,-1);
1c53abe2 1465 return 0;
1466 }
1467 else
1468 {
3f82c4f2 1469 if (TMath::Abs(z)<(AliTPCReconstructor::GetCtgRange()*x+10) && TMath::Abs(z)<fParam->GetZLength() && (TMath::Abs(t.GetSnp())<AliTPCReconstructor::GetMaxSnpTracker()))
b9671574 1470 t.SetNFoundable(t.GetNFoundable()+1);
1627d1c4 1471 else
1472 return 0;
1c53abe2 1473 }
1474 //calculate
91162307 1475 if (krow) {
1476 // cl = krow.FindNearest2(y+10.,z,roady,roadz,index);
1477 cl = krow.FindNearest2(y,z,roady,roadz,index);
b9671574 1478 if (cl) t.SetCurrentClusterIndex1(krow.GetIndex(index));
91162307 1479 }
91162307 1480 if (cl) {
b9671574 1481 t.SetCurrentCluster(cl);
1482 t.SetRow(nr);
4d158c36 1483 if (fIteration==2&&cl->IsUsed(10)) return 0;
b9671574 1484 Int_t accept = AcceptCluster(&t,t.GetCurrentCluster(),1.);
4d158c36 1485 if (fIteration==2&&cl->IsUsed(11)) {
b9671574 1486 t.SetErrorY2(t.GetErrorY2()+0.03);
1487 t.SetErrorZ2(t.GetErrorZ2()+0.03);
1488 t.SetErrorY2(t.GetErrorY2()*3);
1489 t.SetErrorZ2(t.GetErrorZ2()*3);
4d158c36 1490 }
d26d9159 1491 /*
91162307 1492 if (t.fCurrentCluster->IsUsed(10)){
1493 //
1494 //
c9427e08 1495
91162307 1496 t.fNShared++;
1497 if (t.fNShared>0.7*t.GetNumberOfClusters()) {
1498 t.fRemoval =10;
1499 return 0;
1500 }
1501 }
d26d9159 1502 */
91162307 1503 if (accept<3) UpdateTrack(&t,accept);
c9427e08 1504
91162307 1505 } else {
b9671574 1506 if ( fIteration==0 && t.GetNFoundable()*0.5 > t.GetNumberOfClusters()) t.SetRemoval(10);
91162307 1507
1508 }
1509 return 1;
1510}
c9427e08 1511
91162307 1512Int_t AliTPCtrackerMI::FollowToNextFast(AliTPCseed& t, Int_t nr) {
1513 //-----------------------------------------------------------------
1514 // This function tries to find a track prolongation to next pad row
1515 //-----------------------------------------------------------------
1516 //
1517 Double_t x= GetXrow(nr), ymax=GetMaxY(nr);
1518 Double_t y,z;
1519 if (!t.GetProlongation(x,y,z)) {
b9671574 1520 t.SetRemoval(10);
91162307 1521 return 0;
1522 }
1523 //
1524 //
1525 if (TMath::Abs(y)>ymax){
91162307 1526
1c53abe2 1527 if (y > ymax) {
b9671574 1528 t.SetRelativeSector((t.GetRelativeSector()+1) % fN);
1c53abe2 1529 if (!t.Rotate(fSectors->GetAlpha()))
1530 return 0;
1531 } else if (y <-ymax) {
b9671574 1532 t.SetRelativeSector((t.GetRelativeSector()-1+fN) % fN);
1c53abe2 1533 if (!t.Rotate(-fSectors->GetAlpha()))
1534 return 0;
91162307 1535 }
1536 if (!t.PropagateTo(x)) {
1537 return 0;
1538 }
1539 t.GetProlongation(x,y,z);
1540 }
1541 //
1542 // update current shape info every 3 pad-row
b9671574 1543 if ( (nr%6==0) || t.GetNumberOfClusters()<2 || (t.GetCurrentSigmaY2()<0.0001) ){
91162307 1544 // t.fCurrentSigmaY = GetSigmaY(&t);
1545 //t.fCurrentSigmaZ = GetSigmaZ(&t);
1546 GetShape(&t,nr);
1547 }
1548 //
1549 AliTPCclusterMI *cl=0;
1550 UInt_t index=0;
1551
1552
1553 //Int_t nr2 = nr;
b9671574 1554 const AliTPCRow &krow=GetRow(t.GetRelativeSector(),nr);
91162307 1555 if ( (t.GetSigmaY2()<0) || t.GetSigmaZ2()<0) return 0;
1556 Double_t roady =1.;
1557 Double_t roadz = 1.;
1558 //
1559 Int_t row = nr;
b9671574 1560 if (TMath::Abs(TMath::Abs(y)-ymax)<krow.GetDeadZone()){
1561 t.SetInDead(kTRUE);
91162307 1562 t.SetClusterIndex2(row,-1);
1563 return 0;
1564 }
1565 else
1566 {
d7a11555 1567 if (TMath::Abs(z)>(AliTPCReconstructor::GetCtgRange()*x+10)) t.SetClusterIndex2(row,-1);
1c53abe2 1568 }
91162307 1569 //calculate
1570
1571 if ((cl==0)&&(krow)) {
1572 // cl = krow.FindNearest2(y+10,z,roady,roadz,index);
1573 cl = krow.FindNearest2(y,z,roady,roadz,index);
1574
b9671574 1575 if (cl) t.SetCurrentClusterIndex1(krow.GetIndex(index));
91162307 1576 }
1577
1578 if (cl) {
b9671574 1579 t.SetCurrentCluster(cl);
91162307 1580 // Int_t accept = AcceptCluster(&t,t.fCurrentCluster,1.);
1581 //if (accept<3){
1582 t.SetClusterIndex2(row,index);
b9671574 1583 t.SetClusterPointer(row, cl);
91162307 1584 //}
1c53abe2 1585 }
1586 return 1;
1587}
1588
1589
91162307 1590
5d837844 1591//_________________________________________________________________________
1592Bool_t AliTPCtrackerMI::GetTrackPoint(Int_t index, AliTrackPoint &p ) const
1593{
1594 // Get track space point by index
1595 // return false in case the cluster doesn't exist
1596 AliTPCclusterMI *cl = GetClusterMI(index);
1597 if (!cl) return kFALSE;
1598 Int_t sector = (index&0xff000000)>>24;
0201b65c 1599 // Int_t row = (index&0x00ff0000)>>16;
5d837844 1600 Float_t xyz[3];
0201b65c 1601 // xyz[0] = fParam->GetPadRowRadii(sector,row);
1602 xyz[0] = cl->GetX();
5d837844 1603 xyz[1] = cl->GetY();
1604 xyz[2] = cl->GetZ();
1605 Float_t sin,cos;
1606 fParam->AdjustCosSin(sector,cos,sin);
1607 Float_t x = cos*xyz[0]-sin*xyz[1];
1608 Float_t y = cos*xyz[1]+sin*xyz[0];
1609 Float_t cov[6];
1610 Float_t sigmaY2 = 0.027*cl->GetSigmaY2();
1611 if (sector < fParam->GetNInnerSector()) sigmaY2 *= 2.07;
1612 Float_t sigmaZ2 = 0.066*cl->GetSigmaZ2();
1613 if (sector < fParam->GetNInnerSector()) sigmaZ2 *= 1.77;
1614 cov[0] = sin*sin*sigmaY2;
1615 cov[1] = -sin*cos*sigmaY2;
1616 cov[2] = 0.;
1617 cov[3] = cos*cos*sigmaY2;
1618 cov[4] = 0.;
1619 cov[5] = sigmaZ2;
1620 p.SetXYZ(x,y,xyz[2],cov);
1621 AliAlignObj::ELayerID iLayer;
1622 Int_t idet;
1623 if (sector < fParam->GetNInnerSector()) {
1624 iLayer = AliAlignObj::kTPC1;
1625 idet = sector;
1626 }
1627 else {
1628 iLayer = AliAlignObj::kTPC2;
1629 idet = sector - fParam->GetNInnerSector();
1630 }
1631 UShort_t volid = AliAlignObj::LayerToVolUID(iLayer,idet);
1632 p.SetVolumeID(volid);
1633 return kTRUE;
1634}
1635
1636
1637
91162307 1638Int_t AliTPCtrackerMI::UpdateClusters(AliTPCseed& t, Int_t nr) {
1c53abe2 1639 //-----------------------------------------------------------------
1640 // This function tries to find a track prolongation to next pad row
1641 //-----------------------------------------------------------------
b9671574 1642 t.SetCurrentCluster(0);
1643 t.SetCurrentClusterIndex1(0);
1c53abe2 1644
1645 Double_t xt=t.GetX();
91162307 1646 Int_t row = GetRowNumber(xt)-1;
1647 Double_t ymax= GetMaxY(nr);
1648
1c53abe2 1649 if (row < nr) return 1; // don't prolongate if not information until now -
ca142b1f 1650// if (TMath::Abs(t.GetSnp())>0.9 && t.GetNumberOfClusters()>40. && fIteration!=2) {
1651// t.fRemoval =10;
1652// return 0; // not prolongate strongly inclined tracks
1653// }
1654// if (TMath::Abs(t.GetSnp())>0.95) {
1655// t.fRemoval =10;
1656// return 0; // not prolongate strongly inclined tracks
1657// }// patch 28 fev 06
91162307 1658
1659 Double_t x= GetXrow(nr);
1660 Double_t y,z;
1661 //t.PropagateTo(x+0.02);
1662 //t.PropagateTo(x+0.01);
1627d1c4 1663 if (!t.PropagateTo(x)){
1627d1c4 1664 return 0;
1665 }
1c53abe2 1666 //
91162307 1667 y=t.GetY();
1668 z=t.GetZ();
1c53abe2 1669
91162307 1670 if (TMath::Abs(y)>ymax){
1671 if (y > ymax) {
b9671574 1672 t.SetRelativeSector((t.GetRelativeSector()+1) % fN);
91162307 1673 if (!t.Rotate(fSectors->GetAlpha()))
1674 return 0;
1675 } else if (y <-ymax) {
b9671574 1676 t.SetRelativeSector((t.GetRelativeSector()-1+fN) % fN);
91162307 1677 if (!t.Rotate(-fSectors->GetAlpha()))
1678 return 0;
1679 }
982aff31 1680 // if (!t.PropagateTo(x)){
1681 // return 0;
1682 //}
1683 return 1;
1684 //y = t.GetY();
1c53abe2 1685 }
91162307 1686 //
3f82c4f2 1687 if (TMath::Abs(t.GetSnp())>AliTPCReconstructor::GetMaxSnpTracker()) return 0;
a3232aae 1688
b9671574 1689 if (!IsActive(t.GetRelativeSector(),nr)) {
1690 t.SetInDead(kTRUE);
a3232aae 1691 t.SetClusterIndex2(nr,-1);
1692 return 0;
1693 }
1694 //AliInfo(Form("A - Sector%d phi %f - alpha %f", t.fRelativeSector,y/x, t.GetAlpha()));
1695
b9671574 1696 AliTPCRow &krow=GetRow(t.GetRelativeSector(),nr);
1c53abe2 1697
b9671574 1698 if (TMath::Abs(TMath::Abs(y)-ymax)<krow.GetDeadZone()){
1699 t.SetInDead(kTRUE);
91162307 1700 t.SetClusterIndex2(nr,-1);
1c53abe2 1701 return 0;
1702 }
1703 else
1704 {
b9671574 1705 if (TMath::Abs(t.GetZ())<(AliTPCReconstructor::GetCtgRange()*t.GetX()+10) && (TMath::Abs(t.GetSnp())<AliTPCReconstructor::GetMaxSnpTracker())) t.SetNFoundable(t.GetNFoundable()+1);
1627d1c4 1706 else
1707 return 0;
1c53abe2 1708 }
1c53abe2 1709
91162307 1710 // update current
1711 if ( (nr%6==0) || t.GetNumberOfClusters()<2){
1712 // t.fCurrentSigmaY = GetSigmaY(&t);
1713 //t.fCurrentSigmaZ = GetSigmaZ(&t);
1714 GetShape(&t,nr);
1715 }
1c53abe2 1716
91162307 1717 AliTPCclusterMI *cl=0;
d184f295 1718 Int_t index=0;
91162307 1719 //
1720 Double_t roady = 1.;
1721 Double_t roadz = 1.;
1722 //
d26d9159 1723
1724 if (!cl){
1725 index = t.GetClusterIndex2(nr);
1726 if ( (index>0) && (index&0x8000)==0){
b9671574 1727 cl = t.GetClusterPointer(nr);
d26d9159 1728 if ( (cl==0) && (index>0)) cl = GetClusterMI(index);
b9671574 1729 t.SetCurrentClusterIndex1(index);
d26d9159 1730 if (cl) {
b9671574 1731 t.SetCurrentCluster(cl);
d26d9159 1732 return 1;
1733 }
1734 }
1735 }
1736
3d172d79 1737 // if (index<0) return 0;
1738 UInt_t uindex = TMath::Abs(index);
d184f295 1739
91162307 1740 if (krow) {
d184f295 1741 //cl = krow.FindNearest2(y+10,z,roady,roadz,uindex);
1742 cl = krow.FindNearest2(y,z,roady,roadz,uindex);
91162307 1743 }
d26d9159 1744
b9671574 1745 if (cl) t.SetCurrentClusterIndex1(krow.GetIndex(uindex));
1746 t.SetCurrentCluster(cl);
d26d9159 1747
91162307 1748 return 1;
1749}
1c53abe2 1750
1c53abe2 1751
91162307 1752Int_t AliTPCtrackerMI::FollowToNextCluster(AliTPCseed & t, Int_t nr) {
1753 //-----------------------------------------------------------------
1754 // This function tries to find a track prolongation to next pad row
1755 //-----------------------------------------------------------------
1c53abe2 1756
91162307 1757 //update error according neighborhoud
1c53abe2 1758
b9671574 1759 if (t.GetCurrentCluster()) {
1760 t.SetRow(nr);
1761 Int_t accept = AcceptCluster(&t,t.GetCurrentCluster(),1.);
91162307 1762
b9671574 1763 if (t.GetCurrentCluster()->IsUsed(10)){
91162307 1764 //
1765 //
1766 // t.fErrorZ2*=2;
1767 // t.fErrorY2*=2;
b9671574 1768 t.SetNShared(t.GetNShared()+1);
1769 if (t.GetNShared()>0.7*t.GetNumberOfClusters()) {
1770 t.SetRemoval(10);
91162307 1771 return 0;
1772 }
b364ca79 1773 }
d26d9159 1774 if (fIteration>0) accept = 0;
b364ca79 1775 if (accept<3) UpdateTrack(&t,accept);
1776
1c53abe2 1777 } else {
91162307 1778 if (fIteration==0){
b9671574 1779 if ( ( (t.GetSigmaY2()+t.GetSigmaZ2())>0.16)&& t.GetNumberOfClusters()>18) t.SetRemoval(10);
1780 if ( t.GetChi2()/t.GetNumberOfClusters()>6 &&t.GetNumberOfClusters()>18) t.SetRemoval(10);
91162307 1781
b9671574 1782 if (( (t.GetNFoundable()*0.5 > t.GetNumberOfClusters()) || t.GetNoCluster()>15)) t.SetRemoval(10);
1c53abe2 1783 }
1784 }
1785 return 1;
1786}
1787
1788
1789
91162307 1790//_____________________________________________________________________________
1791Int_t AliTPCtrackerMI::FollowProlongation(AliTPCseed& t, Int_t rf, Int_t step) {
1c53abe2 1792 //-----------------------------------------------------------------
91162307 1793 // This function tries to find a track prolongation.
1c53abe2 1794 //-----------------------------------------------------------------
1795 Double_t xt=t.GetX();
1796 //
91162307 1797 Double_t alpha=t.GetAlpha() - fSectors->GetAlphaShift();
1c53abe2 1798 if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi();
1799 if (alpha < 0. ) alpha += 2.*TMath::Pi();
91162307 1800 //
b9671574 1801 t.SetRelativeSector(Int_t(alpha/fSectors->GetAlpha()+0.0001)%fN);
1c53abe2 1802
91162307 1803 Int_t first = GetRowNumber(xt)-1;
51ad6848 1804 for (Int_t nr= first; nr>=rf; nr-=step) {
1805 // update kink info
1806 if (t.GetKinkIndexes()[0]>0){
1807 for (Int_t i=0;i<3;i++){
1808 Int_t index = t.GetKinkIndexes()[i];
1809 if (index==0) break;
1810 if (index<0) continue;
1811 //
6c94f330 1812 AliKink * kink = (AliKink*)fEvent->GetKink(index-1);
51ad6848 1813 if (!kink){
1814 printf("PROBLEM\n");
1815 }
1816 else{
eea478d3 1817 Int_t kinkrow = kink->GetTPCRow0()+2+Int_t(0.5/(0.05+kink->GetAngle(2)));
51ad6848 1818 if (kinkrow==nr){
1819 AliExternalTrackParam paramd(t);
1820 kink->SetDaughter(paramd);
eea478d3 1821 kink->SetStatus(2,5);
51ad6848 1822 kink->Update();
51ad6848 1823 }
1824 }
1825 }
1826 }
1827
1828 if (nr==80) t.UpdateReference();
982aff31 1829 if (nr<fInnerSec->GetNRows())
1830 fSectors = fInnerSec;
1831 else
1832 fSectors = fOuterSec;
91162307 1833 if (FollowToNext(t,nr)==0)
4d158c36 1834 if (!t.IsActive())
1835 return 0;
91162307 1836
1837 }
1838 return 1;
1839}
1840
1c53abe2 1841
1842//_____________________________________________________________________________
91162307 1843Int_t AliTPCtrackerMI::FollowProlongationFast(AliTPCseed& t, Int_t rf, Int_t step) {
1c53abe2 1844 //-----------------------------------------------------------------
1845 // This function tries to find a track prolongation.
1846 //-----------------------------------------------------------------
1847 Double_t xt=t.GetX();
1848 //
1849 Double_t alpha=t.GetAlpha() - fSectors->GetAlphaShift();
1850 if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi();
1851 if (alpha < 0. ) alpha += 2.*TMath::Pi();
b9671574 1852 t.SetRelativeSector(Int_t(alpha/fSectors->GetAlpha()+0.0001)%fN);
91162307 1853
1854 for (Int_t nr=GetRowNumber(xt)-1; nr>=rf; nr-=step) {
1855
1856 if (FollowToNextFast(t,nr)==0)
1857 if (!t.IsActive()) return 0;
1c53abe2 1858
1c53abe2 1859 }
1860 return 1;
1861}
1862
1863
91162307 1864
1865
1866
1c53abe2 1867Int_t AliTPCtrackerMI::FollowBackProlongation(AliTPCseed& t, Int_t rf) {
1868 //-----------------------------------------------------------------
1869 // This function tries to find a track prolongation.
1870 //-----------------------------------------------------------------
1c53abe2 1871 //
eea478d3 1872 Double_t xt=t.GetX();
1c53abe2 1873 Double_t alpha=t.GetAlpha() - fSectors->GetAlphaShift();
1874 if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi();
1875 if (alpha < 0. ) alpha += 2.*TMath::Pi();
b9671574 1876 t.SetRelativeSector(Int_t(alpha/fSectors->GetAlpha()+0.0001)%fN);
1c53abe2 1877
b9671574 1878 Int_t first = t.GetFirstPoint();
eea478d3 1879 if (first<GetRowNumber(xt)+1) first = GetRowNumber(xt)+1;
91162307 1880 //
1881 if (first<0) first=0;
4d158c36 1882 for (Int_t nr=first; nr<=rf; nr++) {
ca142b1f 1883 // if ( (TMath::Abs(t.GetSnp())>0.95)) break;//patch 28 fev 06
51ad6848 1884 if (t.GetKinkIndexes()[0]<0){
1885 for (Int_t i=0;i<3;i++){
1886 Int_t index = t.GetKinkIndexes()[i];
1887 if (index==0) break;
1888 if (index>0) continue;
1889 index = TMath::Abs(index);
6c94f330 1890 AliKink * kink = (AliKink*)fEvent->GetKink(index-1);
51ad6848 1891 if (!kink){
1892 printf("PROBLEM\n");
1893 }
1894 else{
eea478d3 1895 Int_t kinkrow = kink->GetTPCRow0()-2-Int_t(0.5/(0.05+kink->GetAngle(2)));
51ad6848 1896 if (kinkrow==nr){
1897 AliExternalTrackParam paramm(t);
1898 kink->SetMother(paramm);
eea478d3 1899 kink->SetStatus(2,1);
51ad6848 1900 kink->Update();
51ad6848 1901 }
1902 }
eea478d3 1903 }
51ad6848 1904 }
eea478d3 1905 //
d26d9159 1906 if (nr<fInnerSec->GetNRows())
1907 fSectors = fInnerSec;
1908 else
1909 fSectors = fOuterSec;
c274e255 1910
d26d9159 1911 FollowToNext(t,nr);
1c53abe2 1912 }
1913 return 1;
1914}
1915
1916
1917
1918
1919
1920Float_t AliTPCtrackerMI::OverlapFactor(AliTPCseed * s1, AliTPCseed * s2, Int_t &sum1, Int_t & sum2)
1921{
1922 //
1923 //
1924 sum1=0;
1925 sum2=0;
1926 Int_t sum=0;
1c53abe2 1927 //
1928 Float_t dz2 =(s1->GetZ() - s2->GetZ());
c9427e08 1929 dz2*=dz2;
91162307 1930
c9427e08 1931 Float_t dy2 =TMath::Abs((s1->GetY() - s2->GetY()));
1c53abe2 1932 dy2*=dy2;
1933 Float_t distance = TMath::Sqrt(dz2+dy2);
c9427e08 1934 if (distance>4.) return 0; // if there are far away - not overlap - to reduce combinatorics
1c53abe2 1935
91162307 1936 // Int_t offset =0;
b9671574 1937 Int_t firstpoint = TMath::Min(s1->GetFirstPoint(),s2->GetFirstPoint());
1938 Int_t lastpoint = TMath::Max(s1->GetLastPoint(),s2->GetLastPoint());
c9427e08 1939 if (lastpoint>160)
1940 lastpoint =160;
1941 if (firstpoint<0)
1942 firstpoint = 0;
91162307 1943 if (firstpoint>lastpoint) {
1944 firstpoint =lastpoint;
1945 // lastpoint =160;
c9427e08 1946 }
1947
1948
91162307 1949 for (Int_t i=firstpoint-1;i<lastpoint+1;i++){
1950 if (s1->GetClusterIndex2(i)>0) sum1++;
1951 if (s2->GetClusterIndex2(i)>0) sum2++;
1952 if (s1->GetClusterIndex2(i)==s2->GetClusterIndex2(i) && s1->GetClusterIndex2(i)>0) {
1c53abe2 1953 sum++;
1954 }
1955 }
91162307 1956 if (sum<5) return 0;
1957
1627d1c4 1958 Float_t summin = TMath::Min(sum1+1,sum2+1);
1959 Float_t ratio = (sum+1)/Float_t(summin);
1c53abe2 1960 return ratio;
1961}
1962
1963void AliTPCtrackerMI::SignShared(AliTPCseed * s1, AliTPCseed * s2)
1964{
1965 //
1966 //
91162307 1967 if (TMath::Abs(s1->GetC()-s2->GetC())>0.004) return;
1968 if (TMath::Abs(s1->GetTgl()-s2->GetTgl())>0.6) return;
1969
1c53abe2 1970 Float_t dz2 =(s1->GetZ() - s2->GetZ());
1971 dz2*=dz2;
1972 Float_t dy2 =(s1->GetY() - s2->GetY());
1973 dy2*=dy2;
91162307 1974 Float_t distance = dz2+dy2;
1975 if (distance>325.) return ; // if there are far away - not overlap - to reduce combinatorics
1976
1c53abe2 1977 //
91162307 1978 Int_t sumshared=0;
1979 //
b9671574 1980 Int_t firstpoint = TMath::Max(s1->GetFirstPoint(),s2->GetFirstPoint());
1981 Int_t lastpoint = TMath::Min(s1->GetLastPoint(),s2->GetLastPoint());
91162307 1982 //
1983 if (firstpoint>=lastpoint-5) return;;
1c53abe2 1984
91162307 1985 for (Int_t i=firstpoint;i<lastpoint;i++){
1986 // if ( (s1->GetClusterIndex2(i)&0xFFFF8FFF)==(s2->GetClusterIndex2(i)&0xFFFF8FFF) && s1->GetClusterIndex2(i)>0) {
1987 if ( (s1->GetClusterIndex2(i))==(s2->GetClusterIndex2(i)) && s1->GetClusterIndex2(i)>0) {
1988 sumshared++;
1989 }
1990 }
1991 if (sumshared>4){
1992 // sign clusters
1993 //
1994 for (Int_t i=firstpoint;i<lastpoint;i++){
1995 // if ( (s1->GetClusterIndex2(i)&0xFFFF8FFF)==(s2->GetClusterIndex2(i)&0xFFFF8FFF) && s1->GetClusterIndex2(i)>0) {
1996 if ( (s1->GetClusterIndex2(i))==(s2->GetClusterIndex2(i)) && s1->GetClusterIndex2(i)>0) {
1997 AliTPCTrackerPoint *p1 = s1->GetTrackPoint(i);
1998 AliTPCTrackerPoint *p2 = s2->GetTrackPoint(i);;
1999 if (s1->IsActive()&&s2->IsActive()){
b9671574 2000 p1->SetShared(kTRUE);
2001 p2->SetShared(kTRUE);
91162307 2002 }
2003 }
2004 }
2005 }
2006 //
2007 if (sumshared>10){
2008 for (Int_t i=0;i<4;i++){
b9671574 2009 if (s1->GetOverlapLabel(3*i)==0){
2010 s1->SetOverlapLabel(3*i, s2->GetLabel());
2011 s1->SetOverlapLabel(3*i+1,sumshared);
2012 s1->SetOverlapLabel(3*i+2,s2->GetUniqueID());
91162307 2013 break;
2014 }
2015 }
2016 for (Int_t i=0;i<4;i++){
b9671574 2017 if (s2->GetOverlapLabel(3*i)==0){
2018 s2->SetOverlapLabel(3*i, s1->GetLabel());
2019 s2->SetOverlapLabel(3*i+1,sumshared);
2020 s2->SetOverlapLabel(3*i+2,s1->GetUniqueID());
91162307 2021 break;
2022 }
2023 }
2024 }
1c53abe2 2025
91162307 2026}
1c53abe2 2027
91162307 2028void AliTPCtrackerMI::SignShared(TObjArray * arr)
2029{
1c53abe2 2030 //
91162307 2031 //sort trackss according sectors
2032 //
c9427e08 2033 for (Int_t i=0; i<arr->GetEntriesFast(); i++) {
2034 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
91162307 2035 if (!pt) continue;
2036 //if (pt) RotateToLocal(pt);
b9671574 2037 pt->SetSort(0);
c9427e08 2038 }
91162307 2039 arr->UnSort();
1c53abe2 2040 arr->Sort(); // sorting according z
2041 arr->Expand(arr->GetEntries());
91162307 2042 //
2043 //
1c53abe2 2044 Int_t nseed=arr->GetEntriesFast();
1c53abe2 2045 for (Int_t i=0; i<nseed; i++) {
2046 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
91162307 2047 if (!pt) continue;
2048 for (Int_t j=0;j<=12;j++){
b9671574 2049 pt->SetOverlapLabel(j,0);
1c53abe2 2050 }
91162307 2051 }
2052 for (Int_t i=0; i<nseed; i++) {
2053 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2054 if (!pt) continue;
b9671574 2055 if (pt->GetRemoval()>10) continue;
1c53abe2 2056 for (Int_t j=i+1; j<nseed; j++){
2057 AliTPCseed *pt2=(AliTPCseed*)arr->UncheckedAt(j);
91162307 2058 // if (pt2){
b9671574 2059 if (pt2->GetRemoval()<=10) {
2060 if ( TMath::Abs(pt->GetRelativeSector()-pt2->GetRelativeSector())>0) break;
91162307 2061 SignShared(pt,pt2);
c9427e08 2062 }
91162307 2063 }
2064 }
2065}
2066
2067void AliTPCtrackerMI::RemoveDouble(TObjArray * arr, Float_t factor1, Float_t factor2, Int_t removalindex)
2068{
2069 //
2070 //sort trackss according sectors
2071 //
2072 if (fDebug&1) {
6bdc18d6 2073 Info("RemoveDouble","Number of tracks before double removal- %d\n",arr->GetEntries());
91162307 2074 }
2075 //
2076 for (Int_t i=0; i<arr->GetEntriesFast(); i++) {
2077 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2078 if (!pt) continue;
b9671574 2079 pt->SetSort(0);
91162307 2080 }
2081 arr->UnSort();
2082 arr->Sort(); // sorting according z
2083 arr->Expand(arr->GetEntries());
2084 //
2085 //reset overlap labels
2086 //
2087 Int_t nseed=arr->GetEntriesFast();
2088 for (Int_t i=0; i<nseed; i++) {
2089 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2090 if (!pt) continue;
2091 pt->SetUniqueID(i);
2092 for (Int_t j=0;j<=12;j++){
b9671574 2093 pt->SetOverlapLabel(j,0);
1c53abe2 2094 }
2095 }
91162307 2096 //
2097 //sign shared tracks
1c53abe2 2098 for (Int_t i=0; i<nseed; i++) {
2099 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
91162307 2100 if (!pt) continue;
b9671574 2101 if (pt->GetRemoval()>10) continue;
91162307 2102 Float_t deltac = pt->GetC()*0.1;
2103 for (Int_t j=i+1; j<nseed; j++){
2104 AliTPCseed *pt2=(AliTPCseed*)arr->UncheckedAt(j);
2105 // if (pt2){
b9671574 2106 if (pt2->GetRemoval()<=10) {
2107 if ( TMath::Abs(pt->GetRelativeSector()-pt2->GetRelativeSector())>0) break;
91162307 2108 if (TMath::Abs(pt->GetC() -pt2->GetC())>deltac) continue;
2109 if (TMath::Abs(pt->GetTgl()-pt2->GetTgl())>0.05) continue;
2110 //
2111 SignShared(pt,pt2);
2112 }
1c53abe2 2113 }
1c53abe2 2114 }
91162307 2115 //
2116 // remove highly shared tracks
2117 for (Int_t i=0; i<nseed; i++) {
2118 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2119 if (!pt) continue;
b9671574 2120 if (pt->GetRemoval()>10) continue;
91162307 2121 //
2122 Int_t sumshared =0;
2123 for (Int_t j=0;j<4;j++){
b9671574 2124 sumshared = pt->GetOverlapLabel(j*3+1);
91162307 2125 }
2126 Float_t factor = factor1;
b9671574 2127 if (pt->GetRemoval()>0) factor = factor2;
91162307 2128 if (sumshared/pt->GetNumberOfClusters()>factor){
2129 for (Int_t j=0;j<4;j++){
b9671574 2130 if (pt->GetOverlapLabel(3*j)==0) continue;
2131 if (pt->GetOverlapLabel(3*j+1)<5) continue;
2132 if (pt->GetRemoval()==removalindex) continue;
2133 AliTPCseed * pt2 = (AliTPCseed*)arr->UncheckedAt(pt->GetOverlapLabel(3*j+2));
91162307 2134 if (!pt2) continue;
2135 if (pt2->GetSigma2C()<pt->GetSigma2C()){
2136 // pt->fRemoval = removalindex;
2137 delete arr->RemoveAt(i);
2138 break;
1c53abe2 2139 }
91162307 2140 }
1c53abe2 2141 }
91162307 2142 }
2143 arr->Compress();
2144 if (fDebug&1) {
6bdc18d6 2145 Info("RemoveDouble","Number of tracks after double removal- %d\n",arr->GetEntries());
91162307 2146 }
2147}
2148
2149
2150
1c53abe2 2151
2152
91162307 2153
47966a6d 2154void AliTPCtrackerMI::SortTracks(TObjArray * arr, Int_t mode) const
91162307 2155{
2156 //
2157 //sort tracks in array according mode criteria
2158 Int_t nseed = arr->GetEntriesFast();
2159 for (Int_t i=0; i<nseed; i++) {
2160 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2161 if (!pt) {
2162 continue;
2163 }
b9671574 2164 pt->SetSort(mode);
91162307 2165 }
2166 arr->UnSort();
2167 arr->Sort();
1c53abe2 2168}
c9427e08 2169
91162307 2170void AliTPCtrackerMI::RemoveUsed(TObjArray * arr, Float_t factor1, Float_t factor2, Int_t removalindex)
c9427e08 2171{
2172
2173 //Loop over all tracks and remove "overlaps"
2174 //
2175 //
2176 Int_t nseed = arr->GetEntriesFast();
2177 Int_t good =0;
91162307 2178
c9427e08 2179 for (Int_t i=0; i<nseed; i++) {
2180 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2181 if (!pt) {
91162307 2182 delete arr->RemoveAt(i);
c9427e08 2183 }
91162307 2184 else{
b9671574 2185 pt->SetSort(1);
2186 pt->SetBSigned(kFALSE);
c9427e08 2187 }
91162307 2188 }
2189 arr->Compress();
2190 nseed = arr->GetEntriesFast();
2191 arr->UnSort();
2192 arr->Sort();
2193 //
2194 //unsign used
2195 UnsignClusters();
2196 //
2197 for (Int_t i=0; i<nseed; i++) {
2198 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2199 if (!pt) {
2200 continue;
2201 }
2202 Int_t found,foundable,shared;
2203 if (pt->IsActive())
2204 pt->GetClusterStatistic(0,160,found, foundable,shared,kFALSE);
2205 else
2206 pt->GetClusterStatistic(0,160,found, foundable,shared,kTRUE);
2207 //
2208 Double_t factor = factor2;
b9671574 2209 if (pt->GetBConstrain()) factor = factor1;
91162307 2210
2211 if ((Float_t(shared)/Float_t(found))>factor){
c9427e08 2212 pt->Desactivate(removalindex);
91162307 2213 continue;
2214 }
2215
2216 good++;
2217 for (Int_t i=0; i<160; i++) {
2218 Int_t index=pt->GetClusterIndex2(i);
2219 if (index<0 || index&0x8000 ) continue;
b9671574 2220 AliTPCclusterMI *c= pt->GetClusterPointer(i);
91162307 2221 if (!c) continue;
2222 // if (!c->IsUsed(10)) c->Use(10);
2223 //if (pt->IsActive())
2224 c->Use(10);
2225 //else
2226 // c->Use(5);
c9427e08 2227 }
91162307 2228
c9427e08 2229 }
2230 fNtracks = good;
6bdc18d6 2231 if (fDebug>0){
2232 Info("RemoveUsed","\n*****\nNumber of good tracks after shared removal\t%d\n",fNtracks);
2233 }
c9427e08 2234}
2235
51ad6848 2236
2237void AliTPCtrackerMI::RemoveUsed2(TObjArray * arr, Float_t factor1, Float_t factor2, Int_t minimal)
2238{
2239
2240 //Loop over all tracks and remove "overlaps"
2241 //
2242 //
2243 UnsignClusters();
2244 //
2245 Int_t nseed = arr->GetEntriesFast();
2246 Float_t * quality = new Float_t[nseed];
2247 Int_t * indexes = new Int_t[nseed];
2248 Int_t good =0;
2249 //
2250 //
2251 for (Int_t i=0; i<nseed; i++) {
2252 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2253 if (!pt){
2254 quality[i]=-1;
2255 continue;
2256 }
2257 pt->UpdatePoints(); //select first last max dens points
2258 Float_t * points = pt->GetPoints();
2259 if (points[3]<0.8) quality[i] =-1;
2260 //
2261 quality[i] = (points[2]-points[0])+pt->GetNumberOfClusters();
2262 }
2263 TMath::Sort(nseed,quality,indexes);
2264 //
2265 //
2266 for (Int_t itrack=0; itrack<nseed; itrack++) {
2267 Int_t trackindex = indexes[itrack];
2268 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(trackindex);
2269 if (quality[trackindex]<0){
2270 if (pt) {
2271 delete arr->RemoveAt(trackindex);
2272 }
2273 else{
2274 arr->RemoveAt(trackindex);
2275 }
2276 continue;
2277 }
2278 //
2279 Int_t first = Int_t(pt->GetPoints()[0]);
2280 Int_t last = Int_t(pt->GetPoints()[2]);
b9671574 2281 Double_t factor = (pt->GetBConstrain()) ? factor1: factor2;
51ad6848 2282 //
2283 Int_t found,foundable,shared;
2284 pt->GetClusterStatistic(first,last, found, foundable,shared,kFALSE);
eea478d3 2285 Float_t sharedfactor = Float_t(shared+1)/Float_t(found+1);
b406fdb0 2286 Bool_t itsgold =kFALSE;
b9671574 2287 if (pt->GetESD()){
ef7253ac 2288 Int_t dummy[12];
b9671574 2289 if (pt->GetESD()->GetITSclusters(dummy)>4) itsgold= kTRUE;
51ad6848 2290 }
b406fdb0 2291 if (!itsgold){
2292 //
2293 if (Float_t(shared+1)/Float_t(found+1)>factor){
2294 if (pt->GetKinkIndexes()[0]!=0) continue; //don't remove tracks - part of the kinks
2295 delete arr->RemoveAt(trackindex);
2296 continue;
2297 }
2298 if (pt->GetNumberOfClusters()<50&&(found-0.5*shared)<minimal){ //remove short tracks
2299 if (pt->GetKinkIndexes()[0]!=0) continue; //don't remove tracks - part of the kinks
2300 delete arr->RemoveAt(trackindex);
2301 continue;
2302 }
51ad6848 2303 }
2304
2305 good++;
2306 if (sharedfactor>0.4) continue;
b406fdb0 2307 if (pt->GetKinkIndexes()[0]>0) continue;
51ad6848 2308 for (Int_t i=first; i<last; i++) {
2309 Int_t index=pt->GetClusterIndex2(i);
2310 // if (index<0 || index&0x8000 ) continue;
2311 if (index<0 || index&0x8000 ) continue;
b9671574 2312 AliTPCclusterMI *c= pt->GetClusterPointer(i);
51ad6848 2313 if (!c) continue;
2314 c->Use(10);
2315 }
2316 }
2317 fNtracks = good;
2318 if (fDebug>0){
2319 Info("RemoveUsed","\n*****\nNumber of good tracks after shared removal\t%d\n",fNtracks);
2320 }
2321 delete []quality;
2322 delete []indexes;
2323}
2324
91162307 2325void AliTPCtrackerMI::UnsignClusters()
1c53abe2 2326{
91162307 2327 //
2328 // loop over all clusters and unsign them
2329 //
2330
2331 for (Int_t sec=0;sec<fkNIS;sec++){
2332 for (Int_t row=0;row<fInnerSec->GetNRows();row++){
b9671574 2333 AliTPCclusterMI *cl = fInnerSec[sec][row].GetClusters1();
2334 for (Int_t icl =0;icl< fInnerSec[sec][row].GetN1();icl++)
91162307 2335 // if (cl[icl].IsUsed(10))
2336 cl[icl].Use(-1);
b9671574 2337 cl = fInnerSec[sec][row].GetClusters2();
2338 for (Int_t icl =0;icl< fInnerSec[sec][row].GetN2();icl++)
91162307 2339 //if (cl[icl].IsUsed(10))
2340 cl[icl].Use(-1);
2341 }
2342 }
2343
2344 for (Int_t sec=0;sec<fkNOS;sec++){
2345 for (Int_t row=0;row<fOuterSec->GetNRows();row++){
b9671574 2346 AliTPCclusterMI *cl = fOuterSec[sec][row].GetClusters1();
2347 for (Int_t icl =0;icl< fOuterSec[sec][row].GetN1();icl++)
91162307 2348 //if (cl[icl].IsUsed(10))
2349 cl[icl].Use(-1);
b9671574 2350 cl = fOuterSec[sec][row].GetClusters2();
2351 for (Int_t icl =0;icl< fOuterSec[sec][row].GetN2();icl++)
91162307 2352 //if (cl[icl].IsUsed(10))
2353 cl[icl].Use(-1);
2354 }
2355 }
2356
1c53abe2 2357}
2358
91162307 2359
2360
732b9e78 2361void AliTPCtrackerMI::SignClusters(TObjArray * arr, Float_t fnumber, Float_t fdensity)
1c53abe2 2362{
2363 //
91162307 2364 //sign clusters to be "used"
2365 //
2366 // snumber and sdensity sign number of sigmas - bellow mean value to be accepted
2367 // loop over "primaries"
2368
2369 Float_t sumdens=0;
2370 Float_t sumdens2=0;
2371 Float_t sumn =0;
2372 Float_t sumn2 =0;
2373 Float_t sumchi =0;
2374 Float_t sumchi2 =0;
2375
2376 Float_t sum =0;
2377
1c53abe2 2378 TStopwatch timer;
91162307 2379 timer.Start();
1c53abe2 2380
91162307 2381 Int_t nseed = arr->GetEntriesFast();
2382 for (Int_t i=0; i<nseed; i++) {
2383 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2384 if (!pt) {
2385 continue;
2386 }
2387 if (!(pt->IsActive())) continue;
b9671574 2388 Float_t dens = pt->GetNumberOfClusters()/Float_t(pt->GetNFoundable());
91162307 2389 if ( (dens>0.7) && (pt->GetNumberOfClusters()>70)){
2390 sumdens += dens;
2391 sumdens2+= dens*dens;
2392 sumn += pt->GetNumberOfClusters();
2393 sumn2 += pt->GetNumberOfClusters()*pt->GetNumberOfClusters();
2394 Float_t chi2 = pt->GetChi2()/pt->GetNumberOfClusters();
2395 if (chi2>5) chi2=5;
2396 sumchi +=chi2;
2397 sumchi2 +=chi2*chi2;
2398 sum++;
2399 }
1627d1c4 2400 }
91162307 2401
2402 Float_t mdensity = 0.9;
2403 Float_t meann = 130;
2404 Float_t meanchi = 1;
2405 Float_t sdensity = 0.1;
2406 Float_t smeann = 10;
2407 Float_t smeanchi =0.4;
1627d1c4 2408
91162307 2409
2410 if (sum>20){
2411 mdensity = sumdens/sum;
2412 meann = sumn/sum;
2413 meanchi = sumchi/sum;
2414 //
2415 sdensity = sumdens2/sum-mdensity*mdensity;
2416 sdensity = TMath::Sqrt(sdensity);
2417 //
2418 smeann = sumn2/sum-meann*meann;
2419 smeann = TMath::Sqrt(smeann);
2420 //
2421 smeanchi = sumchi2/sum - meanchi*meanchi;
2422 smeanchi = TMath::Sqrt(smeanchi);
2423 }
2424
2425
2426 //REMOVE SHORT DELTAS or tracks going out of sensitive volume of TPC
2427 //
2428 for (Int_t i=0; i<nseed; i++) {
2429 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2430 if (!pt) {
2431 continue;
1c53abe2 2432 }
b9671574 2433 if (pt->GetBSigned()) continue;
2434 if (pt->GetBConstrain()) continue;
91162307 2435 //if (!(pt->IsActive())) continue;
2436 /*
2437 Int_t found,foundable,shared;
2438 pt->GetClusterStatistic(0,160,found, foundable,shared);
2439 if (shared/float(found)>0.3) {
2440 if (shared/float(found)>0.9 ){
2441 //delete arr->RemoveAt(i);
2442 }
2443 continue;
c9427e08 2444 }
91162307 2445 */
2446 Bool_t isok =kFALSE;
b9671574 2447 if ( (pt->GetNShared()/pt->GetNumberOfClusters()<0.5) &&pt->GetNumberOfClusters()>60)
91162307 2448 isok = kTRUE;
b9671574 2449 if ((TMath::Abs(1/pt->GetC())<100.) && (pt->GetNShared()/pt->GetNumberOfClusters()<0.7))
91162307 2450 isok =kTRUE;
2451 if (TMath::Abs(pt->GetZ()/pt->GetX())>1.1)
2452 isok =kTRUE;
2453 if ( (TMath::Abs(pt->GetSnp()>0.7) && pt->GetD(0,0)>60.))
2454 isok =kTRUE;
2455
2456 if (isok)
2457 for (Int_t i=0; i<160; i++) {
2458 Int_t index=pt->GetClusterIndex2(i);
2459 if (index<0) continue;
b9671574 2460 AliTPCclusterMI *c= pt->GetClusterPointer(i);
91162307 2461 if (!c) continue;
2462 //if (!(c->IsUsed(10))) c->Use();
2463 c->Use(10);
2464 }
2465 }
2466
c9427e08 2467
1c53abe2 2468 //
91162307 2469 Double_t maxchi = meanchi+2.*smeanchi;
2470
2471 for (Int_t i=0; i<nseed; i++) {
2472 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2473 if (!pt) {
1c53abe2 2474 continue;
91162307 2475 }
2476 //if (!(pt->IsActive())) continue;
b9671574 2477 if (pt->GetBSigned()) continue;
91162307 2478 Double_t chi = pt->GetChi2()/pt->GetNumberOfClusters();
2479 if (chi>maxchi) continue;
2480
2481 Float_t bfactor=1;
b9671574 2482 Float_t dens = pt->GetNumberOfClusters()/Float_t(pt->GetNFoundable());
91162307 2483
2484 //sign only tracks with enoug big density at the beginning
2485
2486 if ((pt->GetDensityFirst(40)<0.75) && pt->GetNumberOfClusters()<meann) continue;
2487
2488
3e5d0aa2 2489 Double_t mindens = TMath::Max(double(mdensity-sdensity*fdensity*bfactor),0.65);
91162307 2490 Double_t minn = TMath::Max(Int_t(meann-fnumber*smeann*bfactor),50);
2491
2492 // if (pt->fBConstrain) mindens = TMath::Max(mdensity-sdensity*fdensity*bfactor,0.65);
b9671574 2493 if ( (pt->GetRemoval()==10) && (pt->GetSnp()>0.8)&&(dens>mindens))
91162307 2494 minn=0;
2495
2496 if ((dens>mindens && pt->GetNumberOfClusters()>minn) && chi<maxchi ){
2497 //Int_t noc=pt->GetNumberOfClusters();
b9671574 2498 pt->SetBSigned(kTRUE);
91162307 2499 for (Int_t i=0; i<160; i++) {
2500
2501 Int_t index=pt->GetClusterIndex2(i);
2502 if (index<0) continue;
b9671574 2503 AliTPCclusterMI *c= pt->GetClusterPointer(i);
91162307 2504 if (!c) continue;
2505 // if (!(c->IsUsed(10))) c->Use();
2506 c->Use(10);
2507 }
1c53abe2 2508 }
91162307 2509 }
2510 // gLastCheck = nseed;
2511 // arr->Compress();
2512 if (fDebug>0){
2513 timer.Print();
2514 }
1c53abe2 2515}
2516
2517
47966a6d 2518void AliTPCtrackerMI::StopNotActive(TObjArray * arr, Int_t row0, Float_t th0, Float_t th1, Float_t th2) const
91162307 2519{
2520 // stop not active tracks
2521 // take th1 as threshold for number of founded to number of foundable on last 10 active rows
2522 // take th2 as threshold for number of founded to number of foundable on last 20 active rows
2523 Int_t nseed = arr->GetEntriesFast();
2524 //
2525 for (Int_t i=0; i<nseed; i++) {
2526 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
2527 if (!pt) {
2528 continue;
2529 }
2530 if (!(pt->IsActive())) continue;
2531 StopNotActive(pt,row0,th0, th1,th2);
2532 }
2533}
1c53abe2 2534
1c53abe2 2535
1c53abe2 2536
91162307 2537void AliTPCtrackerMI::StopNotActive(AliTPCseed * seed, Int_t row0, Float_t th0, Float_t th1,
47966a6d 2538 Float_t th2) const
91162307 2539{
2540 // stop not active tracks
2541 // take th1 as threshold for number of founded to number of foundable on last 10 active rows
2542 // take th2 as threshold for number of founded to number of foundable on last 20 active rows
2543 Int_t sumgood1 = 0;
2544 Int_t sumgood2 = 0;
2545 Int_t foundable = 0;
b9671574 2546 Int_t maxindex = seed->GetLastPoint(); //last foundable row
2547 if (seed->GetNFoundable()*th0 > seed->GetNumberOfClusters()) {
91162307 2548 seed->Desactivate(10) ;
2549 return;
2550 }
1c53abe2 2551
3e5d0aa2 2552 for (Int_t i=row0; i<maxindex; i++){
91162307 2553 Int_t index = seed->GetClusterIndex2(i);
2554 if (index!=-1) foundable++;
2555 //if (!c) continue;
2556 if (foundable<=30) sumgood1++;
2557 if (foundable<=50) {
2558 sumgood2++;
2559 }
2560 else{
2561 break;
2562 }
2563 }
2564 if (foundable>=30.){
2565 if (sumgood1<(th1*30.)) seed->Desactivate(10);
2566 }
2567 if (foundable>=50)
2568 if (sumgood2<(th2*50.)) seed->Desactivate(10);
2569}
1c53abe2 2570
1c53abe2 2571
d26d9159 2572Int_t AliTPCtrackerMI::RefitInward(AliESD *event)
2573{
2574 //
2575 // back propagation of ESD tracks
2576 //
2577 //return 0;
2578 fEvent = event;
2579 ReadSeeds(event,2);
2580 fIteration=2;
982aff31 2581 //PrepareForProlongation(fSeeds,1);
2582 PropagateForward2(fSeeds);
af32720d 2583
4d158c36 2584 Int_t ntracks=0;
d26d9159 2585 Int_t nseed = fSeeds->GetEntriesFast();
2586 for (Int_t i=0;i<nseed;i++){
2587 AliTPCseed * seed = (AliTPCseed*) fSeeds->UncheckedAt(i);
4d158c36 2588 if (!seed) continue;
eea478d3 2589 if (seed->GetKinkIndex(0)>0) UpdateKinkQualityD(seed); // update quality informations for kinks
2590
d26d9159 2591 seed->PropagateTo(fParam->GetInnerRadiusLow());
51ad6848 2592 seed->UpdatePoints();
d26d9159 2593 AliESDtrack *esd=event->GetTrack(i);
2594 seed->CookdEdx(0.02,0.6);
2595 CookLabel(seed,0.1); //For comparison only
af32720d 2596 //
34acb742 2597 if (AliTPCReconstructor::StreamLevel()>0 && seed!=0&&esd!=0) {
af32720d 2598 TTreeSRedirector &cstream = *fDebugStreamer;
2599 cstream<<"Crefit"<<
2600 "Esd.="<<esd<<
2601 "Track.="<<seed<<
2602 "\n";
2603 }
c274e255 2604
51ad6848 2605 if (seed->GetNumberOfClusters()>15){
4d158c36 2606 esd->UpdateTrackParams(seed,AliESDtrack::kTPCrefit);
51ad6848 2607 esd->SetTPCPoints(seed->GetPoints());
b9671574 2608 esd->SetTPCPointsF(seed->GetNFoundable());
2609 Int_t ndedx = seed->GetNCDEDX(0)+seed->GetNCDEDX(1)+seed->GetNCDEDX(2)+seed->GetNCDEDX(3);
2610 Float_t sdedx = (seed->GetSDEDX(0)+seed->GetSDEDX(1)+seed->GetSDEDX(2)+seed->GetSDEDX(3))*0.25;
b406fdb0 2611 Float_t dedx = seed->GetdEdx();
2612 esd->SetTPCsignal(dedx, sdedx, ndedx);
fdedfdec 2613 //
2614 // add seed to the esd track in Calib level
2615 //
2616 if (AliTPCReconstructor::StreamLevel()>0){
2617 AliTPCseed * seedCopy = new AliTPCseed(*seed, kTRUE);
2618 esd->AddCalibObject(seedCopy);
2619 }
4d158c36 2620 ntracks++;
d26d9159 2621 }
2622 else{
2623 //printf("problem\n");
2624 }
2625 }
51ad6848 2626 //FindKinks(fSeeds,event);
4d158c36 2627 Info("RefitInward","Number of refitted tracks %d",ntracks);
d26d9159 2628 fEvent =0;
2629 //WriteTracks();
2630 return 0;
2631}
2632
1c53abe2 2633
91162307 2634Int_t AliTPCtrackerMI::PropagateBack(AliESD *event)
2635{
2636 //
2637 // back propagation of ESD tracks
2638 //
1c53abe2 2639
91162307 2640 fEvent = event;
d26d9159 2641 fIteration = 1;
5d837844 2642 ReadSeeds(event,1);
b406fdb0 2643 PropagateBack(fSeeds);
2644 RemoveUsed2(fSeeds,0.4,0.4,20);
2645 //
91162307 2646 Int_t nseed = fSeeds->GetEntriesFast();
4d158c36 2647 Int_t ntracks=0;
91162307 2648 for (Int_t i=0;i<nseed;i++){
2649 AliTPCseed * seed = (AliTPCseed*) fSeeds->UncheckedAt(i);
d9e62e7e 2650 if (!seed) continue;
51ad6848 2651 if (seed->GetKinkIndex(0)<0) UpdateKinkQualityM(seed); // update quality informations for kinks
2652 seed->UpdatePoints();
91162307 2653 AliESDtrack *esd=event->GetTrack(i);
d26d9159 2654 seed->CookdEdx(0.02,0.6);
91162307 2655 CookLabel(seed,0.1); //For comparison only
51ad6848 2656 if (seed->GetNumberOfClusters()>15){
4d158c36 2657 esd->UpdateTrackParams(seed,AliESDtrack::kTPCout);
51ad6848 2658 esd->SetTPCPoints(seed->GetPoints());
b9671574 2659 esd->SetTPCPointsF(seed->GetNFoundable());
2660 Int_t ndedx = seed->GetNCDEDX(0)+seed->GetNCDEDX(1)+seed->GetNCDEDX(2)+seed->GetNCDEDX(3);
2661 Float_t sdedx = (seed->GetSDEDX(0)+seed->GetSDEDX(1)+seed->GetSDEDX(2)+seed->GetSDEDX(3))*0.25;
167c41ab 2662 Float_t dedx = seed->GetdEdx();
2663 esd->SetTPCsignal(dedx, sdedx, ndedx);
4d158c36 2664 ntracks++;
ca142b1f 2665 Int_t eventnumber = event->GetEventNumber();// patch 28 fev 06
2666 (*fDebugStreamer)<<"Cback"<<
2667 "Tr0.="<<seed<<
2668 "EventNr="<<eventnumber<<
2669 "\n"; // patch 28 fev 06
4d158c36 2670 }
91162307 2671 }
51ad6848 2672 //FindKinks(fSeeds,event);
4d158c36 2673 Info("PropagateBack","Number of back propagated tracks %d",ntracks);
91162307 2674 fEvent =0;
d26d9159 2675 //WriteTracks();
6c94f330 2676
91162307 2677 return 0;
2678}
2679
2680
2681void AliTPCtrackerMI::DeleteSeeds()
2682{
b67e07dc 2683 //
2684 //delete Seeds
6c94f330 2685
91162307 2686 Int_t nseed = fSeeds->GetEntriesFast();
2687 for (Int_t i=0;i<nseed;i++){
2688 AliTPCseed * seed = (AliTPCseed*)fSeeds->At(i);
2689 if (seed) delete fSeeds->RemoveAt(i);
2690 }
2691 delete fSeeds;
6c94f330 2692
91162307 2693 fSeeds =0;
2694}
2695
d26d9159 2696void AliTPCtrackerMI::ReadSeeds(AliESD *event, Int_t direction)
91162307 2697{
2698 //
2699 //read seeds from the event
2700
2701 Int_t nentr=event->GetNumberOfTracks();
6bdc18d6 2702 if (fDebug>0){
2703 Info("ReadSeeds", "Number of ESD tracks: %d\n", nentr);
2704 }
91162307 2705 if (fSeeds)
2706 DeleteSeeds();
2707 if (!fSeeds){
4d158c36 2708 fSeeds = new TObjArray(nentr);
91162307 2709 }
4d158c36 2710 UnsignClusters();
2711 // Int_t ntrk=0;
91162307 2712 for (Int_t i=0; i<nentr; i++) {
2713 AliESDtrack *esd=event->GetTrack(i);
51ad6848 2714 ULong_t status=esd->GetStatus();
2715 if (!(status&AliESDtrack::kTPCin)) continue;
b67e07dc 2716 AliTPCtrack t(*esd);
5d837844 2717 t.SetNumberOfClusters(0);
eea478d3 2718 // AliTPCseed *seed = new AliTPCseed(t,t.GetAlpha());
2719 AliTPCseed *seed = new AliTPCseed(t/*,t.GetAlpha()*/);
2720 for (Int_t ikink=0;ikink<3;ikink++) {
2721 Int_t index = esd->GetKinkIndex(ikink);
2722 seed->GetKinkIndexes()[ikink] = index;
2723 if (index==0) continue;
2724 index = TMath::Abs(index);
2725 AliESDkink * kink = fEvent->GetKink(index-1);
2726 if (kink&&esd->GetKinkIndex(ikink)<0){
2727 if ((status & AliESDtrack::kTRDrefit) != 0) kink->SetStatus(1,2);
2728 if ((status & AliESDtrack::kITSout) != 0) kink->SetStatus(1,0);
2729 }
2730 if (kink&&esd->GetKinkIndex(ikink)>0){
2731 if ((status & AliESDtrack::kTRDrefit) != 0) kink->SetStatus(1,6);
2732 if ((status & AliESDtrack::kITSout) != 0) kink->SetStatus(1,4);
2733 }
2734
2735 }
6c94f330 2736 if (((status&AliESDtrack::kITSout)==0)&&(direction==1)) seed->ResetCovariance(10.);
2737 if ( direction ==2 &&(status & AliESDtrack::kTRDrefit) == 0 ) seed->ResetCovariance(10.);
4d158c36 2738 if ( direction ==2 && ((status & AliESDtrack::kTPCout) == 0) ) {
2739 fSeeds->AddAt(0,i);
2740 delete seed;
2741 continue;
2742 }
2743 if ( direction ==2 &&(status & AliESDtrack::kTRDrefit) > 0 ) {
c0b978f0 2744 Double_t par0[5],par1[5],alpha,x;
2745 esd->GetInnerExternalParameters(alpha,x,par0);
4d158c36 2746 esd->GetExternalParameters(x,par1);
2747 Double_t delta1 = TMath::Abs(par0[4]-par1[4])/(0.000000001+TMath::Abs(par0[4]+par1[4]));
2748 Double_t delta2 = TMath::Abs(par0[3]-par1[3]);
51ad6848 2749 Double_t trdchi2=0;
2750 if (esd->GetTRDncls()>0) trdchi2 = esd->GetTRDchi2()/esd->GetTRDncls();
4d158c36 2751 //reset covariance if suspicious
51ad6848 2752 if ( (delta1>0.1) || (delta2>0.006) ||trdchi2>7.)
6c94f330 2753 seed->ResetCovariance(10.);
4d158c36 2754 }
982aff31 2755
91162307 2756 //
2757 //
2758 // rotate to the local coordinate system
eea478d3 2759 //
2760 fSectors=fInnerSec; fN=fkNIS;
91162307 2761 Double_t alpha=seed->GetAlpha() - fSectors->GetAlphaShift();
2762 if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi();
2763 if (alpha < 0. ) alpha += 2.*TMath::Pi();
2764 Int_t ns=Int_t(alpha/fSectors->GetAlpha())%fN;
2765 alpha =ns*fSectors->GetAlpha() + fSectors->GetAlphaShift();
4d158c36 2766 if (alpha<-TMath::Pi()) alpha += 2*TMath::Pi();
2767 if (alpha>=TMath::Pi()) alpha -= 2*TMath::Pi();
91162307 2768 alpha-=seed->GetAlpha();
d9b8978b 2769 if (!seed->Rotate(alpha)) {
2770 delete seed;
2771 continue;
2772 }
b9671574 2773 seed->SetESD(esd);
4d158c36 2774 // sign clusters
b406fdb0 2775 if (esd->GetKinkIndex(0)<=0){
2776 for (Int_t irow=0;irow<160;irow++){
2777 Int_t index = seed->GetClusterIndex2(irow);
2778 if (index>0){
2779 //
2780 AliTPCclusterMI * cl = GetClusterMI(index);
b9671574 2781 seed->SetClusterPointer(irow,cl);
b406fdb0 2782 if (cl){
2783 if ((index & 0x8000)==0){
2784 cl->Use(10); // accepted cluster
2785 }else{
2786 cl->Use(6); // close cluster not accepted
2787 }
4d158c36 2788 }else{
b406fdb0 2789 Info("ReadSeeds","Not found cluster");
2790 }
4d158c36 2791 }
2792 }
2793 }
2794 fSeeds->AddAt(seed,i);
91162307 2795 }
2796}
2797
2798
2799
2800//_____________________________________________________________________________
2801void AliTPCtrackerMI::MakeSeeds3(TObjArray * arr, Int_t sec, Int_t i1, Int_t i2, Float_t cuts[4],
2802 Float_t deltay, Int_t ddsec) {
2803 //-----------------------------------------------------------------
2804 // This function creates track seeds.
2805 // SEEDING WITH VERTEX CONSTRAIN
2806 //-----------------------------------------------------------------
2807 // cuts[0] - fP4 cut
2808 // cuts[1] - tan(phi) cut
2809 // cuts[2] - zvertex cut
2810 // cuts[3] - fP3 cut
2811 Int_t nin0 = 0;
2812 Int_t nin1 = 0;
2813 Int_t nin2 = 0;
2814 Int_t nin = 0;
2815 Int_t nout1 = 0;
2816 Int_t nout2 = 0;
2817
2818 Double_t x[5], c[15];
2819 // Int_t di = i1-i2;
2820 //
2821 AliTPCseed * seed = new AliTPCseed;
2822 Double_t alpha=fSectors->GetAlpha(), shift=fSectors->GetAlphaShift();
2823 Double_t cs=cos(alpha), sn=sin(alpha);
2824 //
2825 // Double_t x1 =fOuterSec->GetX(i1);
2826 //Double_t xx2=fOuterSec->GetX(i2);
2827
2828 Double_t x1 =GetXrow(i1);
2829 Double_t xx2=GetXrow(i2);
2830
2831 Double_t x3=GetX(), y3=GetY(), z3=GetZ();
2832
2833 Int_t imiddle = (i2+i1)/2; //middle pad row index
2834 Double_t xm = GetXrow(imiddle); // radius of middle pad-row
2835 const AliTPCRow& krm=GetRow(sec,imiddle); //middle pad -row
2836 //
2837 Int_t ns =sec;
2838
2839 const AliTPCRow& kr1=GetRow(ns,i1);
b9671574 2840 Double_t ymax = GetMaxY(i1)-kr1.GetDeadZone()-1.5;
2841 Double_t ymaxm = GetMaxY(imiddle)-kr1.GetDeadZone()-1.5;
91162307 2842
2843 //
2844 // change cut on curvature if it can't reach this layer
2845 // maximal curvature set to reach it
2846 Double_t dvertexmax = TMath::Sqrt((x1-x3)*(x1-x3)+(ymax+5-y3)*(ymax+5-y3));
2847 if (dvertexmax*0.5*cuts[0]>0.85){
2848 cuts[0] = 0.85/(dvertexmax*0.5+1.);
2849 }
2850 Double_t r2min = 1/(cuts[0]*cuts[0]); //minimal square of radius given by cut
2851
2852 // Int_t ddsec = 1;
2853 if (deltay>0) ddsec = 0;
2854 // loop over clusters
2855 for (Int_t is=0; is < kr1; is++) {
2856 //
2857 if (kr1[is]->IsUsed(10)) continue;
2858 Double_t y1=kr1[is]->GetY(), z1=kr1[is]->GetZ();
2859 //if (TMath::Abs(y1)>ymax) continue;
2860
2861 if (deltay>0 && TMath::Abs(ymax-TMath::Abs(y1))> deltay ) continue; // seed only at the edge
2862
2863 // find possible directions
2864 Float_t anglez = (z1-z3)/(x1-x3);
2865 Float_t extraz = z1 - anglez*(x1-xx2); // extrapolated z
2866 //
2867 //
2868 //find rotation angles relative to line given by vertex and point 1
2869 Double_t dvertex2 = (x1-x3)*(x1-x3)+(y1-y3)*(y1-y3);
2870 Double_t dvertex = TMath::Sqrt(dvertex2);
2871 Double_t angle13 = TMath::ATan((y1-y3)/(x1-x3));
2872 Double_t cs13 = cos(-angle13), sn13 = sin(-angle13);
2873
2874 //
2875 // loop over 2 sectors
2876 Int_t dsec1=-ddsec;
2877 Int_t dsec2= ddsec;
2878 if (y1<0) dsec2= 0;
2879 if (y1>0) dsec1= 0;
2880
2881 Double_t dddz1=0; // direction of delta inclination in z axis
2882 Double_t dddz2=0;
2883 if ( (z1-z3)>0)
2884 dddz1 =1;
2885 else
2886 dddz2 =1;
2887 //
2888 for (Int_t dsec = dsec1; dsec<=dsec2;dsec++){
2889 Int_t sec2 = sec + dsec;
2890 //
2891 // AliTPCRow& kr2 = fOuterSec[(sec2+fkNOS)%fkNOS][i2];
2892 //AliTPCRow& kr2m = fOuterSec[(sec2+fkNOS)%fkNOS][imiddle];
2893 AliTPCRow& kr2 = GetRow((sec2+fkNOS)%fkNOS,i2);
2894 AliTPCRow& kr2m = GetRow((sec2+fkNOS)%fkNOS,imiddle);
2895 Int_t index1 = TMath::Max(kr2.Find(extraz-0.6-dddz1*TMath::Abs(z1)*0.05)-1,0);
2896 Int_t index2 = TMath::Min(kr2.Find(extraz+0.6+dddz2*TMath::Abs(z1)*0.05)+1,kr2);
2897
2898 // rotation angles to p1-p3
2899 Double_t cs13r = cos(-angle13+dsec*alpha)/dvertex, sn13r = sin(-angle13+dsec*alpha)/dvertex;
2900 Double_t x2, y2, z2;
2901 //
2902 // Double_t dymax = maxangle*TMath::Abs(x1-xx2);
2903
2904 //
2905 Double_t dxx0 = (xx2-x3)*cs13r;
2906 Double_t dyy0 = (xx2-x3)*sn13r;
2907 for (Int_t js=index1; js < index2; js++) {
2908 const AliTPCclusterMI *kcl = kr2[js];
2909 if (kcl->IsUsed(10)) continue;
2910 //
2911 //calcutate parameters
2912 //
2913 Double_t yy0 = dyy0 +(kcl->GetY()-y3)*cs13r;
2914 // stright track
2915 if (TMath::Abs(yy0)<0.000001) continue;
2916 Double_t xx0 = dxx0 -(kcl->GetY()-y3)*sn13r;
2917 Double_t y0 = 0.5*(xx0*xx0+yy0*yy0-xx0)/yy0;
2918 Double_t r02 = (0.25+y0*y0)*dvertex2;
2919 //curvature (radius) cut
2920 if (r02<r2min) continue;
2921
2922 nin0++;
2923 //
2924 Double_t c0 = 1/TMath::Sqrt(r02);
2925 if (yy0>0) c0*=-1.;
2926
2927
2928 //Double_t dfi0 = 2.*TMath::ASin(dvertex*c0*0.5);
2929 //Double_t dfi1 = 2.*TMath::ASin(TMath::Sqrt(yy0*yy0+(1-xx0)*(1-xx0))*dvertex*c0*0.5);
b67e07dc 2930 Double_t dfi0 = 2.*AliTPCFastMath::FastAsin(dvertex*c0*0.5);
2931 Double_t dfi1 = 2.*AliTPCFastMath::FastAsin(TMath::Sqrt(yy0*yy0+(1-xx0)*(1-xx0))*dvertex*c0*0.5);
91162307 2932 //
2933 //
2934 Double_t z0 = kcl->GetZ();
2935 Double_t zzzz2 = z1-(z1-z3)*dfi1/dfi0;
2936 if (TMath::Abs(zzzz2-z0)>0.5) continue;
2937 nin1++;
2938 //
2939 Double_t dip = (z1-z0)*c0/dfi1;
2940 Double_t x0 = (0.5*cs13+y0*sn13)*dvertex*c0;
2941 //
2942 y2 = kcl->GetY();
2943 if (dsec==0){
2944 x2 = xx2;
2945 z2 = kcl->GetZ();
2946 }
2947 else
2948 {
2949 // rotation
2950 z2 = kcl->GetZ();
2951 x2= xx2*cs-y2*sn*dsec;
2952 y2=+xx2*sn*dsec+y2*cs;
2953 }
2954
2955 x[0] = y1;
2956 x[1] = z1;
2957 x[2] = x0;
2958 x[3] = dip;
2959 x[4] = c0;
2960 //
2961 //
2962 // do we have cluster at the middle ?
2963 Double_t ym,zm;
2964 GetProlongation(x1,xm,x,ym,zm);
2965 UInt_t dummy;
2966 AliTPCclusterMI * cm=0;
2967 if (TMath::Abs(ym)-ymaxm<0){
2968 cm = krm.FindNearest2(ym,zm,1.0,0.6,dummy);
2969 if ((!cm) || (cm->IsUsed(10))) {
2970 continue;
2971 }
2972 }
2973 else{
2974 // rotate y1 to system 0
2975 // get state vector in rotated system
2976 Double_t yr1 = (-0.5*sn13+y0*cs13)*dvertex*c0;
2977 Double_t xr2 = x0*cs+yr1*sn*dsec;
2978 Double_t xr[5]={kcl->GetY(),kcl->GetZ(), xr2, dip, c0};
2979 //
2980 GetProlongation(xx2,xm,xr,ym,zm);
2981 if (TMath::Abs(ym)-ymaxm<0){
2982 cm = kr2m.FindNearest2(ym,zm,1.0,0.6,dummy);
2983 if ((!cm) || (cm->IsUsed(10))) {
2984 continue;
2985 }
2986 }
2987 }
2988
2989
2990 Double_t dym = 0;
2991 Double_t dzm = 0;
2992 if (cm){
2993 dym = ym - cm->GetY();
2994 dzm = zm - cm->GetZ();
2995 }
2996 nin2++;
2997
2998
2999 //
3000 //
3001 Double_t sy1=kr1[is]->GetSigmaY2()*2., sz1=kr1[is]->GetSigmaZ2()*2.;
3002 Double_t sy2=kcl->GetSigmaY2()*2., sz2=kcl->GetSigmaZ2()*2.;
3003 //Double_t sy3=400*3./12., sy=0.1, sz=0.1;
3004 Double_t sy3=25000*x[4]*x[4]+0.1, sy=0.1, sz=0.1;
3005 //Double_t sy3=25000*x[4]*x[4]*60+0.5, sy=0.1, sz=0.1;
3006
b67e07dc 3007 Double_t f40=(F1(x1,y1+sy,x2,y2,x3,y3)-x[4])/sy;
3008 Double_t f42=(F1(x1,y1,x2,y2+sy,x3,y3)-x[4])/sy;
3009 Double_t f43=(F1(x1,y1,x2,y2,x3,y3+sy)-x[4])/sy;
3010 Double_t f20=(F2(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy;
3011 Double_t f22=(F2(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy;
3012 Double_t f23=(F2(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy;
91162307 3013
b67e07dc 3014 Double_t f30=(F3(x1,y1+sy,x2,y2,z1,z2)-x[3])/sy;
3015 Double_t f31=(F3(x1,y1,x2,y2,z1+sz,z2)-x[3])/sz;
3016 Double_t f32=(F3(x1,y1,x2,y2+sy,z1,z2)-x[3])/sy;
3017 Double_t f34=(F3(x1,y1,x2,y2,z1,z2+sz)-x[3])/sz;
91162307 3018
1c53abe2 3019 c[0]=sy1;
3020 c[1]=0.; c[2]=sz1;
3021 c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23;
3022 c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22;
3023 c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34;
3024 c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23;
3025 c[13]=f30*sy1*f40+f32*sy2*f42;
3026 c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43;
91162307 3027
3028 // if (!BuildSeed(kr1[is],kcl,0,x1,x2,x3,x,c)) continue;
3029
1c53abe2 3030 UInt_t index=kr1.GetIndex(is);
6c94f330 3031 AliTPCseed *track=new(seed) AliTPCseed(x1, ns*alpha+shift, x, c, index);
91162307 3032
b9671574 3033 track->SetIsSeeding(kTRUE);
3034 track->SetSeed1(i1);
3035 track->SetSeed2(i2);
3036 track->SetSeedType(3);
c9427e08 3037
91162307 3038
3039 //if (dsec==0) {
3040 FollowProlongation(*track, (i1+i2)/2,1);
3041 Int_t foundable,found,shared;
3042 track->GetClusterStatistic((i1+i2)/2,i1, found, foundable, shared, kTRUE);
3043 if ((found<0.55*foundable) || shared>0.5*found || (track->GetSigmaY2()+track->GetSigmaZ2())>0.5){
3044 seed->Reset();
3045 seed->~AliTPCseed();
3046 continue;
3047 }
3048 //}
3049
3050 nin++;
3051 FollowProlongation(*track, i2,1);
3052
3053
3054 //Int_t rc = 1;
b9671574 3055 track->SetBConstrain(1);
91162307 3056 // track->fLastPoint = i1+fInnerSec->GetNRows(); // first cluster in track position
b9671574 3057 track->SetLastPoint(i1); // first cluster in track position
3058 track->SetFirstPoint(track->GetLastPoint());
91162307 3059
3060 if (track->GetNumberOfClusters()<(i1-i2)*0.5 ||
b9671574 3061 track->GetNumberOfClusters() < track->GetNFoundable()*0.6 ||
3062 track->GetNShared()>0.4*track->GetNumberOfClusters() ) {
91162307 3063 seed->Reset();
3064 seed->~AliTPCseed();
c9427e08 3065 continue;
3066 }
91162307 3067 nout1++;
3068 // Z VERTEX CONDITION
c274e255 3069 Double_t zv, bz=GetBz();
3070 if ( !track->GetZAt(0.,bz,zv) ) continue;
91162307 3071 if (TMath::Abs(zv-z3)>cuts[2]) {
3072 FollowProlongation(*track, TMath::Max(i2-20,0));
c274e255 3073 if ( !track->GetZAt(0.,bz,zv) ) continue;
91162307 3074 if (TMath::Abs(zv-z3)>cuts[2]){
3075 FollowProlongation(*track, TMath::Max(i2-40,0));
c274e255 3076 if ( !track->GetZAt(0.,bz,zv) ) continue;
b9671574 3077 if (TMath::Abs(zv-z3)>cuts[2] &&(track->GetNumberOfClusters() > track->GetNFoundable()*0.7)){
91162307 3078 // make seed without constrain
3079 AliTPCseed * track2 = MakeSeed(track,0.2,0.5,1.);
3080 FollowProlongation(*track2, i2,1);
b9671574 3081 track2->SetBConstrain(kFALSE);
3082 track2->SetSeedType(1);
91162307 3083 arr->AddLast(track2);
3084 seed->Reset();
3085 seed->~AliTPCseed();
3086 continue;
3087 }
3088 else{
3089 seed->Reset();
3090 seed->~AliTPCseed();
3091 continue;
3092
3093 }
3094 }
c9427e08 3095 }
1c53abe2 3096
b9671574 3097 track->SetSeedType(0);
91162307 3098 arr->AddLast(track);
3099 seed = new AliTPCseed;
3100 nout2++;
3101 // don't consider other combinations
b9671574 3102 if (track->GetNumberOfClusters() > track->GetNFoundable()*0.8)
91162307 3103 break;
1c53abe2 3104 }
3105 }
3106 }
6bdc18d6 3107 if (fDebug>3){
3108 Info("MakeSeeds3","\nSeeding statistic:\t%d\t%d\t%d\t%d\t%d\t%d",nin0,nin1,nin2,nin,nout1,nout2);
91162307 3109 }
3110 delete seed;
1c53abe2 3111}
3112
1627d1c4 3113
91162307 3114void AliTPCtrackerMI::MakeSeeds5(TObjArray * arr, Int_t sec, Int_t i1, Int_t i2, Float_t cuts[4],
3115 Float_t deltay) {
3116
3117
3118
1627d1c4 3119 //-----------------------------------------------------------------
91162307 3120 // This function creates track seeds.
1627d1c4 3121 //-----------------------------------------------------------------
91162307 3122 // cuts[0] - fP4 cut
3123 // cuts[1] - tan(phi) cut
3124 // cuts[2] - zvertex cut
3125 // cuts[3] - fP3 cut
3126
3127
3128 Int_t nin0 = 0;
3129 Int_t nin1 = 0;
3130 Int_t nin2 = 0;
3131 Int_t nin = 0;
3132 Int_t nout1 = 0;
3133 Int_t nout2 = 0;
3134 Int_t nout3 =0;
3135 Double_t x[5], c[15];
3136 //
3137 // make temporary seed
3138 AliTPCseed * seed = new AliTPCseed;
1627d1c4 3139 Double_t alpha=fOuterSec->GetAlpha(), shift=fOuterSec->GetAlphaShift();
3140 // Double_t cs=cos(alpha), sn=sin(alpha);
91162307 3141 //
3142 //
1627d1c4 3143
91162307 3144 // first 3 padrows
3145 Double_t x1 = GetXrow(i1-1);
3146 const AliTPCRow& kr1=GetRow(sec,i1-1);
b9671574 3147 Double_t y1max = GetMaxY(i1-1)-kr1.GetDeadZone()-1.5;
91162307 3148 //
3149 Double_t x1p = GetXrow(i1);
3150 const AliTPCRow& kr1p=GetRow(sec,i1);
3151 //
3152 Double_t x1m = GetXrow(i1-2);
3153 const AliTPCRow& kr1m=GetRow(sec,i1-2);
1627d1c4 3154
91162307 3155 //
3156 //last 3 padrow for seeding
3157 AliTPCRow& kr3 = GetRow((sec+fkNOS)%fkNOS,i1-7);
3158 Double_t x3 = GetXrow(i1-7);
3159 // Double_t y3max= GetMaxY(i1-7)-kr3.fDeadZone-1.5;
3160 //
3161 AliTPCRow& kr3p = GetRow((sec+fkNOS)%fkNOS,i1-6);
3162 Double_t x3p = GetXrow(i1-6);
3163 //
3164 AliTPCRow& kr3m = GetRow((sec+fkNOS)%fkNOS,i1-8);
3165 Double_t x3m = GetXrow(i1-8);
1627d1c4 3166
91162307 3167 //
3168 //
3169 // middle padrow
3170 Int_t im = i1-4; //middle pad row index
3171 Double_t xm = GetXrow(im); // radius of middle pad-row
3172 const AliTPCRow& krm=GetRow(sec,im); //middle pad -row
3173 // Double_t ymmax = GetMaxY(im)-kr1.fDeadZone-1.5;
3174 //
3175 //
3176 Double_t deltax = x1-x3;
3177 Double_t dymax = deltax*cuts[1];
3178 Double_t dzmax = deltax*cuts[3];
3179 //
3180 // loop over clusters
3181 for (Int_t is=0; is < kr1; is++) {
1627d1c4 3182 //
91162307 3183 if (kr1[is]->IsUsed(10)) continue;
3184 Double_t y1=kr1[is]->GetY(), z1=kr1[is]->GetZ();
1627d1c4 3185 //
91162307 3186 if (deltay>0 && TMath::Abs(y1max-TMath::Abs(y1))> deltay ) continue; // seed only at the edge
3187 //
3188 Int_t index1 = TMath::Max(kr3.Find(z1-dzmax)-1,0);
3189 Int_t index2 = TMath::Min(kr3.Find(z1+dzmax)+1,kr3);
3190 //
3191 Double_t y3, z3;
1627d1c4 3192 //
1627d1c4 3193 //
91162307 3194 UInt_t index;
3195 for (Int_t js=index1; js < index2; js++) {
3196 const AliTPCclusterMI *kcl = kr3[js];
3197 if (kcl->IsUsed(10)) continue;
3198 y3 = kcl->GetY();
3199 // apply angular cuts
3200 if (TMath::Abs(y1-y3)>dymax) continue;
3201 x3 = x3;
3202 z3 = kcl->GetZ();
3203 if (TMath::Abs(z1-z3)>dzmax) continue;
3204 //
3205 Double_t angley = (y1-y3)/(x1-x3);
3206 Double_t anglez = (z1-z3)/(x1-x3);
3207 //
3208 Double_t erry = TMath::Abs(angley)*(x1-x1m)*0.5+0.5;
3209 Double_t errz = TMath::Abs(anglez)*(x1-x1m)*0.5+0.5;
3210 //
3211 Double_t yyym = angley*(xm-x1)+y1;
3212 Double_t zzzm = anglez*(xm-x1)+z1;
3213
3214 const AliTPCclusterMI *kcm = krm.FindNearest2(yyym,zzzm,erry,errz,index);
3215 if (!kcm) continue;
3216 if (kcm->IsUsed(10)) continue;
3217
3218 erry = TMath::Abs(angley)*(x1-x1m)*0.4+0.5;
3219 errz = TMath::Abs(anglez)*(x1-x1m)*0.4+0.5;
3220 //
3221 //
3222 //
3223 Int_t used =0;
3224 Int_t found =0;
3225 //
3226 // look around first
3227 const AliTPCclusterMI *kc1m = kr1m.FindNearest2(angley*(x1m-x1)+y1,
3228 anglez*(x1m-x1)+z1,
3229 erry,errz,index);
3230 //
3231 if (kc1m){
3232 found++;
3233 if (kc1m->IsUsed(10)) used++;
1627d1c4 3234 }
91162307 3235 const AliTPCclusterMI *kc1p = kr1p.FindNearest2(angley*(x1p-x1)+y1,
3236 anglez*(x1p-x1)+z1,
3237 erry,errz,index);
1627d1c4 3238 //
91162307 3239 if (kc1p){
3240 found++;
3241 if (kc1p->IsUsed(10)) used++;
1627d1c4 3242 }
91162307 3243 if (used>1) continue;
3244 if (found<1) continue;
1627d1c4 3245
91162307 3246 //
3247 // look around last
3248 const AliTPCclusterMI *kc3m = kr3m.FindNearest2(angley*(x3m-x3)+y3,
3249 anglez*(x3m-x3)+z3,
3250 erry,errz,index);
3251 //
3252 if (kc3m){
3253 found++;
3254 if (kc3m->IsUsed(10)) used++;
3255 }
3256 else
3257 continue;
3258 const AliTPCclusterMI *kc3p = kr3p.FindNearest2(angley*(x3p-x3)+y3,
3259 anglez*(x3p-x3)+z3,
3260 erry,errz,index);
3261 //
3262 if (kc3p){
3263 found++;
3264 if (kc3p->IsUsed(10)) used++;
3265 }
3266 else
3267 continue;
3268 if (used>1) continue;
3269 if (found<3) continue;
3270 //
3271 Double_t x2,y2,z2;
3272 x2 = xm;
3273 y2 = kcm->GetY();
3274 z2 = kcm->GetZ();
3275 //
3276
1627d1c4 3277 x[0]=y1;
3278 x[1]=z1;
b67e07dc 3279 x[4]=F1(x1,y1,x2,y2,x3,y3);
91162307 3280 //if (TMath::Abs(x[4]) >= cuts[0]) continue;
3281 nin0++;
3282 //
b67e07dc 3283 x[2]=F2(x1,y1,x2,y2,x3,y3);
91162307 3284 nin1++;
3285 //
b67e07dc 3286 x[3]=F3n(x1,y1,x2,y2,z1,z2,x[4]);
91162307 3287 //if (TMath::Abs(x[3]) > cuts[3]) continue;
3288 nin2++;
3289 //
3290 //
3291 Double_t sy1=0.1, sz1=0.1;
3292 Double_t sy2=0.1, sz2=0.1;
3293 Double_t sy3=0.1, sy=0.1, sz=0.1;
1627d1c4 3294
b67e07dc 3295 Double_t f40=(F1(x1,y1+sy,x2,y2,x3,y3)-x[4])/sy;
3296 Double_t f42=(F1(x1,y1,x2,y2+sy,x3,y3)-x[4])/sy;
3297 Double_t f43=(F1(x1,y1,x2,y2,x3,y3+sy)-x[4])/sy;
3298 Double_t f20=(F2(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy;
3299 Double_t f22=(F2(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy;
3300 Double_t f23=(F2(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy;
91162307 3301
b67e07dc 3302 Double_t f30=(F3(x1,y1+sy,x2,y2,z1,z2)-x[3])/sy;
3303 Double_t f31=(F3(x1,y1,x2,y2,z1+sz,z2)-x[3])/sz;
3304 Double_t f32=(F3(x1,y1,x2,y2+sy,z1,z2)-x[3])/sy;
3305 Double_t f34=(F3(x1,y1,x2,y2,z1,z2+sz)-x[3])/sz;
1627d1c4 3306
3307 c[0]=sy1;
91162307 3308 c[1]=0.; c[2]=sz1;
1627d1c4 3309 c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23;
3310 c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22;
3311 c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34;
3312 c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23;
3313 c[13]=f30*sy1*f40+f32*sy2*f42;
3314 c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43;
3315
91162307 3316 // if (!BuildSeed(kr1[is],kcl,0,x1,x2,x3,x,c)) continue;
3317
3318 UInt_t index=kr1.GetIndex(is);
6c94f330 3319 AliTPCseed *track=new(seed) AliTPCseed(x1, sec*alpha+shift, x, c, index);
91162307 3320
b9671574 3321 track->SetIsSeeding(kTRUE);
91162307 3322
3323 nin++;
3324 FollowProlongation(*track, i1-7,1);
b9671574 3325 if (track->GetNumberOfClusters() < track->GetNFoundable()*0.75 ||
3326 track->GetNShared()>0.6*track->GetNumberOfClusters() || ( track->GetSigmaY2()+ track->GetSigmaZ2())>0.6){
91162307 3327 seed->Reset();
3328 seed->~AliTPCseed();
3329 continue;
3330 }
3331 nout1++;
3332 nout2++;
3333 //Int_t rc = 1;
3334 FollowProlongation(*track, i2,1);
b9671574 3335 track->SetBConstrain(0);
3336 track->SetLastPoint(i1+fInnerSec->GetNRows()); // first cluster in track position
3337 track->SetFirstPoint(track->GetLastPoint());
91162307 3338
3339 if (track->GetNumberOfClusters()<(i1-i2)*0.5 ||
b9671574 3340 track->GetNumberOfClusters()<track->GetNFoundable()*0.7 ||
3341 track->GetNShared()>2. || track->GetChi2()/track->GetNumberOfClusters()>6 || ( track->GetSigmaY2()+ track->GetSigmaZ2())>0.5 ) {
91162307 3342 seed->Reset();
3343 seed->~AliTPCseed();
3344 continue;
3345 }
3346
3347 {
3348 FollowProlongation(*track, TMath::Max(i2-10,0),1);
3349 AliTPCseed * track2 = MakeSeed(track,0.2,0.5,0.9);
3350 FollowProlongation(*track2, i2,1);
b9671574 3351 track2->SetBConstrain(kFALSE);
3352 track2->SetSeedType(4);
91162307 3353 arr->AddLast(track2);
3354 seed->Reset();
3355 seed->~AliTPCseed();
3356 }
3357
3358
3359 //arr->AddLast(track);
3360 //seed = new AliTPCseed;
3361 nout3++;
3362 }
3363 }
3364
6bdc18d6 3365 if (fDebug>3){
3366 Info("MakeSeeds5","\nSeeding statiistic:\t%d\t%d\t%d\t%d\t%d\t%d",nin0,nin1,nin2,nin,nout1,nout2,nout3);
91162307 3367 }
3368 delete seed;
3369}
3370
3371
3372//_____________________________________________________________________________
176aff27 3373void AliTPCtrackerMI::MakeSeeds2(TObjArray * arr, Int_t sec, Int_t i1, Int_t i2, Float_t */*cuts[4]*/,
3374 Float_t deltay, Bool_t /*bconstrain*/) {
91162307 3375 //-----------------------------------------------------------------
3376 // This function creates track seeds - without vertex constraint
3377 //-----------------------------------------------------------------
3378 // cuts[0] - fP4 cut - not applied
3379 // cuts[1] - tan(phi) cut
3380 // cuts[2] - zvertex cut - not applied
3381 // cuts[3] - fP3 cut
3382 Int_t nin0=0;
3383 Int_t nin1=0;
3384 Int_t nin2=0;
3385 Int_t nin3=0;
3386 // Int_t nin4=0;
3387 //Int_t nin5=0;
3388
3389
3390
3391 Double_t alpha=fOuterSec->GetAlpha(), shift=fOuterSec->GetAlphaShift();
3392 // Double_t cs=cos(alpha), sn=sin(alpha);
3393 Int_t row0 = (i1+i2)/2;
3394 Int_t drow = (i1-i2)/2;
3395 const AliTPCRow& kr0=fSectors[sec][row0];
3396 AliTPCRow * kr=0;
3397
3398 AliTPCpolyTrack polytrack;
3399 Int_t nclusters=fSectors[sec][row0];
3400 AliTPCseed * seed = new AliTPCseed;
3401
3402 Int_t sumused=0;
3403 Int_t cused=0;
3404 Int_t cnused=0;
3405 for (Int_t is=0; is < nclusters; is++) { //LOOP over clusters
3406 Int_t nfound =0;
3407 Int_t nfoundable =0;
3408 for (Int_t iter =1; iter<2; iter++){ //iterations
3409 const AliTPCRow& krm=fSectors[sec][row0-iter];
3410 const AliTPCRow& krp=fSectors[sec][row0+iter];
3411 const AliTPCclusterMI * cl= kr0[is];
3412
3413 if (cl->IsUsed(10)) {
3414 cused++;
3415 }
3416 else{
3417 cnused++;
3418 }
3419 Double_t x = kr0.GetX();
3420 // Initialization of the polytrack
3421 nfound =0;
3422 nfoundable =0;
3423 polytrack.Reset();
3424 //
3425 Double_t y0= cl->GetY();
3426 Double_t z0= cl->GetZ();
3427 Float_t erry = 0;
3428 Float_t errz = 0;
3429
b9671574 3430 Double_t ymax = fSectors->GetMaxY(row0)-kr0.GetDeadZone()-1.5;
91162307 3431 if (deltay>0 && TMath::Abs(ymax-TMath::Abs(y0))> deltay ) continue; // seed only at the edge
3432
3433 erry = (0.5)*cl->GetSigmaY2()/TMath::Sqrt(cl->GetQ())*6;
3434 errz = (0.5)*cl->GetSigmaZ2()/TMath::Sqrt(cl->GetQ())*6;
3435 polytrack.AddPoint(x,y0,z0,erry, errz);
3436
3437 sumused=0;
3438 if (cl->IsUsed(10)) sumused++;
3439
3440
3441 Float_t roady = (5*TMath::Sqrt(cl->GetSigmaY2()+0.2)+1.)*iter;
3442 Float_t roadz = (5*TMath::Sqrt(cl->GetSigmaZ2()+0.2)+1.)*iter;
3443 //
3444 x = krm.GetX();
3445 AliTPCclusterMI * cl1 = krm.FindNearest(y0,z0,roady,roadz);
3446 if (cl1 && TMath::Abs(ymax-TMath::Abs(y0))) {
3447 erry = (0.5)*cl1->GetSigmaY2()/TMath::Sqrt(cl1->GetQ())*3;
3448 errz = (0.5)*cl1->GetSigmaZ2()/TMath::Sqrt(cl1->GetQ())*3;
3449 if (cl1->IsUsed(10)) sumused++;
3450 polytrack.AddPoint(x,cl1->GetY(),cl1->GetZ(),erry,errz);
3451 }
3452 //
3453 x = krp.GetX();
3454 AliTPCclusterMI * cl2 = krp.FindNearest(y0,z0,roady,roadz);
3455 if (cl2) {
3456 erry = (0.5)*cl2->GetSigmaY2()/TMath::Sqrt(cl2->GetQ())*3;
3457 errz = (0.5)*cl2->GetSigmaZ2()/TMath::Sqrt(cl2->GetQ())*3;
3458 if (cl2->IsUsed(10)) sumused++;
3459 polytrack.AddPoint(x,cl2->GetY(),cl2->GetZ(),erry,errz);
3460 }
3461 //
3462 if (sumused>0) continue;
3463 nin0++;
3464 polytrack.UpdateParameters();
3465 // follow polytrack
3466 roadz = 1.2;
3467 roady = 1.2;
3468 //
3469 Double_t yn,zn;
3470 nfoundable = polytrack.GetN();
3471 nfound = nfoundable;
3472 //
3473 for (Int_t ddrow = iter+1; ddrow<drow;ddrow++){
3474 Float_t maxdist = 0.8*(1.+3./(ddrow));
3475 for (Int_t delta = -1;delta<=1;delta+=2){
3476 Int_t row = row0+ddrow*delta;
3477 kr = &(fSectors[sec][row]);
3478 Double_t xn = kr->GetX();
b9671574 3479 Double_t ymax = fSectors->GetMaxY(row)-kr->GetDeadZone()-1.5;
91162307 3480 polytrack.GetFitPoint(xn,yn,zn);
3481 if (TMath::Abs(yn)>ymax) continue;
3482 nfoundable++;
3483 AliTPCclusterMI * cln = kr->FindNearest(yn,zn,roady,roadz);
3484 if (cln) {
3485 Float_t dist = TMath::Sqrt( (yn-cln->GetY())*(yn-cln->GetY())+(zn-cln->GetZ())*(zn-cln->GetZ()));
3486 if (dist<maxdist){
3487 /*
3488 erry = (dist+0.3)*cln->GetSigmaY2()/TMath::Sqrt(cln->GetQ())*(1.+1./(ddrow));
3489 errz = (dist+0.3)*cln->GetSigmaZ2()/TMath::Sqrt(cln->GetQ())*(1.+1./(ddrow));
3490 if (cln->IsUsed(10)) {
3491 // printf("used\n");
3492 sumused++;
3493 erry*=2;
3494 errz*=2;
3495 }
3496 */
3497 erry=0.1;
3498 errz=0.1;
3499 polytrack.AddPoint(xn,cln->GetY(),cln->GetZ(),erry, errz);
3500 nfound++;
3501 }
3502 }
3503 }
3504 if ( (sumused>3) || (sumused>0.5*nfound) || (nfound<0.6*nfoundable)) break;
3505 polytrack.UpdateParameters();
3506 }
3507 }
3508 if ( (sumused>3) || (sumused>0.5*nfound)) {
3509 //printf("sumused %d\n",sumused);
3510 continue;
3511 }
3512 nin1++;
3513 Double_t dy,dz;
3514 polytrack.GetFitDerivation(kr0.GetX(),dy,dz);
3515 AliTPCpolyTrack track2;
3516
3517 polytrack.Refit(track2,0.5+TMath::Abs(dy)*0.3,0.4+TMath::Abs(dz)*0.3);
3518 if (track2.GetN()<0.5*nfoundable) continue;
3519 nin2++;
3520
3521 if ((nfound>0.6*nfoundable) &&( nfoundable>0.4*(i1-i2))) {
3522 //
3523 // test seed with and without constrain
3524 for (Int_t constrain=0; constrain<=0;constrain++){
3525 // add polytrack candidate
3526
3527 Double_t x[5], c[15];
3528 Double_t x1,x2,x3,y1,y2,y3,z1,z2,z3;
3529 track2.GetBoundaries(x3,x1);
3530 x2 = (x1+x3)/2.;
3531 track2.GetFitPoint(x1,y1,z1);
3532 track2.GetFitPoint(x2,y2,z2);
3533 track2.GetFitPoint(x3,y3,z3);
3534 //
3535 //is track pointing to the vertex ?
3536 Double_t x0,y0,z0;
3537 x0=0;
3538 polytrack.GetFitPoint(x0,y0,z0);
3539
3540 if (constrain) {
3541 x2 = x3;
3542 y2 = y3;
3543 z2 = z3;
3544
3545 x3 = 0;
3546 y3 = 0;
3547 z3 = 0;
3548 }
3549 x[0]=y1;
3550 x[1]=z1;
b67e07dc 3551 x[4]=F1(x1,y1,x2,y2,x3,y3);
91162307 3552
3553 // if (TMath::Abs(x[4]) >= cuts[0]) continue; //
b67e07dc 3554 x[2]=F2(x1,y1,x2,y2,x3,y3);
91162307 3555
3556 //if (TMath::Abs(x[4]*x1-x[2]) >= cuts[1]) continue;
b67e07dc 3557 //x[3]=F3(x1,y1,x2,y2,z1,z2);
3558 x[3]=F3n(x1,y1,x3,y3,z1,z3,x[4]);
91162307 3559 //if (TMath::Abs(x[3]) > cuts[3]) continue;
3560
3561
3562 Double_t sy =0.1, sz =0.1;
3563 Double_t sy1=0.02, sz1=0.02;
3564 Double_t sy2=0.02, sz2=0.02;
3565 Double_t sy3=0.02;
3566
3567 if (constrain){
3568 sy3=25000*x[4]*x[4]+0.1, sy=0.1, sz=0.1;
3569 }
3570
b67e07dc 3571 Double_t f40=(F1(x1,y1+sy,x2,y2,x3,y3)-x[4])/sy;
3572 Double_t f42=(F1(x1,y1,x2,y2+sy,x3,y3)-x[4])/sy;
3573 Double_t f43=(F1(x1,y1,x2,y2,x3,y3+sy)-x[4])/sy;
3574 Double_t f20=(F2(x1,y1+sy,x2,y2,x3,y3)-x[2])/sy;
3575 Double_t f22=(F2(x1,y1,x2,y2+sy,x3,y3)-x[2])/sy;
3576 Double_t f23=(F2(x1,y1,x2,y2,x3,y3+sy)-x[2])/sy;
3577
3578 Double_t f30=(F3(x1,y1+sy,x3,y3,z1,z3)-x[3])/sy;
3579 Double_t f31=(F3(x1,y1,x3,y3,z1+sz,z3)-x[3])/sz;
3580 Double_t f32=(F3(x1,y1,x3,y3+sy,z1,z3)-x[3])/sy;
3581 Double_t f34=(F3(x1,y1,x3,y3,z1,z3+sz)-x[3])/sz;
91162307 3582
3583
3584 c[0]=sy1;
3585 c[1]=0.; c[2]=sz1;
3586 c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23;
3587 c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22;
3588 c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34;
3589 c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23;
3590 c[13]=f30*sy1*f40+f32*sy2*f42;
3591 c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43;
3592
3593 //Int_t row1 = fSectors->GetRowNumber(x1);
3594 Int_t row1 = GetRowNumber(x1);
3595
3596 UInt_t index=0;
3597 //kr0.GetIndex(is);
6c94f330 3598 AliTPCseed *track=new (seed) AliTPCseed(x1,sec*alpha+shift,x,c,index);
b9671574 3599 track->SetIsSeeding(kTRUE);
91162307 3600 Int_t rc=FollowProlongation(*track, i2);
b9671574 3601 if (constrain) track->SetBConstrain(1);
91162307 3602 else
b9671574 3603 track->SetBConstrain(0);
3604 track->SetLastPoint(row1+fInnerSec->GetNRows()); // first cluster in track position
3605 track->SetFirstPoint(track->GetLastPoint());
91162307 3606
3607 if (rc==0 || track->GetNumberOfClusters()<(i1-i2)*0.5 ||
b9671574 3608 track->GetNumberOfClusters() < track->GetNFoundable()*0.6 ||
3609 track->GetNShared()>0.4*track->GetNumberOfClusters()) {
91162307 3610 //delete track;
3611 seed->Reset();
3612 seed->~AliTPCseed();
3613 }
3614 else {
3615 arr->AddLast(track);
3616 seed = new AliTPCseed;
3617 }
3618 nin3++;
3619 }
3620 } // if accepted seed
3621 }
6bdc18d6 3622 if (fDebug>3){
3623 Info("MakeSeeds2","\nSeeding statiistic:\t%d\t%d\t%d\t%d",nin0,nin1,nin2,nin3);
91162307 3624 }
3625 delete seed;
3626}
3627
3628
3629AliTPCseed *AliTPCtrackerMI::MakeSeed(AliTPCseed *track, Float_t r0, Float_t r1, Float_t r2)
3630{
3631 //
3632 //
d26d9159 3633 //reseed using track points
91162307 3634 Int_t p0 = int(r0*track->GetNumberOfClusters()); // point 0
3635 Int_t p1 = int(r1*track->GetNumberOfClusters());
3636 Int_t p2 = int(r2*track->GetNumberOfClusters()); // last point
176aff27 3637 Int_t pp2=0;
91162307 3638 Double_t x0[3],x1[3],x2[3];
89e09524 3639 for (Int_t i=0;i<3;i++){
3640 x0[i]=-1;
3641 x1[i]=-1;
3642 x2[i]=-1;
3643 }
91162307 3644
3645 // find track position at given ratio of the length
89e09524 3646 Int_t sec0=0, sec1=0, sec2=0;
91162307 3647 Int_t index=-1;
3648 Int_t clindex;
3649 for (Int_t i=0;i<160;i++){
b9671574 3650 if (track->GetClusterPointer(i)){
91162307 3651 index++;
3652 AliTPCTrackerPoint *trpoint =track->GetTrackPoint(i);
3653 if ( (index<p0) || x0[0]<0 ){
3654 if (trpoint->GetX()>1){
3655 clindex = track->GetClusterIndex2(i);
3656 if (clindex>0){
3657 x0[0] = trpoint->GetX();
3658 x0[1] = trpoint->GetY();
3659 x0[2] = trpoint->GetZ();
3660 sec0 = ((clindex&0xff000000)>>24)%18;
3661 }
3662 }
3663 }
3664
3665 if ( (index<p1) &&(trpoint->GetX()>1)){
3666 clindex = track->GetClusterIndex2(i);
3667 if (clindex>0){
3668 x1[0] = trpoint->GetX();
3669 x1[1] = trpoint->GetY();
3670 x1[2] = trpoint->GetZ();
3671 sec1 = ((clindex&0xff000000)>>24)%18;
3672 }
3673 }
3674 if ( (index<p2) &&(trpoint->GetX()>1)){
3675 clindex = track->GetClusterIndex2(i);
3676 if (clindex>0){
3677 x2[0] = trpoint->GetX();
3678 x2[1] = trpoint->GetY();
3679 x2[2] = trpoint->GetZ();
3680 sec2 = ((clindex&0xff000000)>>24)%18;
3681 pp2 = i;
3682 }
3683 }
3684 }
3685 }
3686
3687 Double_t alpha, cs,sn, xx2,yy2;
3688 //
3689 alpha = (sec1-sec2)*fSectors->GetAlpha();
3690 cs = TMath::Cos(alpha);
3691 sn = TMath::Sin(alpha);
3692 xx2= x1[0]*cs-x1[1]*sn;
3693 yy2= x1[0]*sn+x1[1]*cs;
3694 x1[0] = xx2;
3695 x1[1] = yy2;
3696 //
3697 alpha = (sec0-sec2)*fSectors->GetAlpha();
3698 cs = TMath::Cos(alpha);
3699 sn = TMath::Sin(alpha);
3700 xx2= x0[0]*cs-x0[1]*sn;
3701 yy2= x0[0]*sn+x0[1]*cs;
3702 x0[0] = xx2;
3703 x0[1] = yy2;
3704 //
3705 //
3706 //
3707 Double_t x[5],c[15];
3708 //
3709 x[0]=x2[1];
3710 x[1]=x2[2];
b67e07dc 3711 x[4]=F1(x2[0],x2[1],x1[0],x1[1],x0[0],x0[1]);
91162307 3712 // if (x[4]>1) return 0;
b67e07dc 3713 x[2]=F2(x2[0],x2[1],x1[0],x1[1],x0[0],x0[1]);
3714 x[3]=F3n(x2[0],x2[1],x0[0],x0[1],x2[2],x0[2],x[4]);
91162307 3715 //if (TMath::Abs(x[3]) > 2.2) return 0;
3716 //if (TMath::Abs(x[2]) > 1.99) return 0;
3717 //
3718 Double_t sy =0.1, sz =0.1;
3719 //
3720 Double_t sy1=0.02+track->GetSigmaY2(), sz1=0.02+track->GetSigmaZ2();
3721 Double_t sy2=0.01+track->GetSigmaY2(), sz2=0.01+track->GetSigmaZ2();
3722 Double_t sy3=0.01+track->GetSigmaY2();
3723 //
b67e07dc 3724 Double_t f40=(F1(x2[0],x2[1]+sy,x1[0],x1[1],x0[0],x0[1])-x[4])/sy;
3725 Double_t f42=(F1(x2[0],x2[1],x1[0],x1[1]+sy,x0[0],x0[1])-x[4])/sy;
3726 Double_t f43=(F1(x2[0],x2[1],x1[0],x1[1],x0[0],x0[1]+sy)-x[4])/sy;
3727 Double_t f20=(F2(x2[0],x2[1]+sy,x1[0],x1[1],x0[0],x0[1])-x[2])/sy;
3728 Double_t f22=(F2(x2[0],x2[1],x1[0],x1[1]+sy,x0[0],x0[1])-x[2])/sy;
3729 Double_t f23=(F2(x2[0],x2[1],x1[0],x1[1],x0[0],x0[1]+sy)-x[2])/sy;
3730 //
3731 Double_t f30=(F3(x2[0],x2[1]+sy,x0[0],x0[1],x2[2],x0[2])-x[3])/sy;
3732 Double_t f31=(F3(x2[0],x2[1],x0[0],x0[1],x2[2]+sz,x0[2])-x[3])/sz;
3733 Double_t f32=(F3(x2[0],x2[1],x0[0],x0[1]+sy,x2[2],x0[2])-x[3])/sy;
3734 Double_t f34=(F3(x2[0],x2[1],x0[0],x0[1],x2[2],x0[2]+sz)-x[3])/sz;
91162307 3735
3736
3737 c[0]=sy1;
3738 c[1]=0.; c[2]=sz1;
3739 c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23;
3740 c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22;
3741 c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34;
3742 c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23;
3743 c[13]=f30*sy1*f40+f32*sy2*f42;
3744 c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43;
3745
3746 // Int_t row1 = fSectors->GetRowNumber(x2[0]);
6c94f330 3747 AliTPCseed *seed=new AliTPCseed(x2[0], sec2*fSectors->GetAlpha()+fSectors->GetAlphaShift(), x, c, 0);
91162307 3748 // Double_t y0,z0,y1,z1, y2,z2;
3749 //seed->GetProlongation(x0[0],y0,z0);
3750 // seed->GetProlongation(x1[0],y1,z1);
3751 //seed->GetProlongation(x2[0],y2,z2);
3752 // seed =0;
b9671574 3753 seed->SetLastPoint(pp2);
3754 seed->SetFirstPoint(pp2);
91162307 3755
3756
3757 return seed;
3758}
3759
d26d9159 3760
3761AliTPCseed *AliTPCtrackerMI::ReSeed(AliTPCseed *track, Float_t r0, Float_t r1, Float_t r2)
3762{
3763 //
3764 //
3765 //reseed using founded clusters
3766 //
3767 // Find the number of clusters
3768 Int_t nclusters = 0;
3769 for (Int_t irow=0;irow<160;irow++){
3770 if (track->GetClusterIndex(irow)>0) nclusters++;
3771 }
3772 //
3773 Int_t ipos[3];
3774 ipos[0] = TMath::Max(int(r0*nclusters),0); // point 0 cluster
3775 ipos[1] = TMath::Min(int(r1*nclusters),nclusters-1); //
3776 ipos[2] = TMath::Min(int(r2*nclusters),nclusters-1); // last point
3777 //
3778 //
3779 Double_t xyz[3][3];
3780 Int_t row[3],sec[3]={0,0,0};
3781 //
3782 // find track row position at given ratio of the length
3783 Int_t index=-1;
3784 for (Int_t irow=0;irow<160;irow++){
3785 if (track->GetClusterIndex2(irow)<0) continue;
3786 index++;
3787 for (Int_t ipoint=0;ipoint<3;ipoint++){
3788 if (index<=ipos[ipoint]) row[ipoint] = irow;
3789 }
3790 }
3791 //
3792 //Get cluster and sector position
3793 for (Int_t ipoint=0;ipoint<3;ipoint++){
3794 Int_t clindex = track->GetClusterIndex2(row[ipoint]);
3795 AliTPCclusterMI * cl = GetClusterMI(clindex);
3796 if (cl==0) {
6bdc18d6 3797 //Error("Bug\n");
47966a6d 3798 // AliTPCclusterMI * cl = GetClusterMI(clindex);
d26d9159 3799 return 0;
3800 }
3801 sec[ipoint] = ((clindex&0xff000000)>>24)%18;
3802 xyz[ipoint][0] = GetXrow(row[ipoint]);
3803 xyz[ipoint][1] = cl->GetY();
3804 xyz[ipoint][2] = cl->GetZ();
3805 }
3806 //
3807 //
3808 // Calculate seed state vector and covariance matrix
3809
3810 Double_t alpha, cs,sn, xx2,yy2;
3811 //
3812 alpha = (sec[1]-sec[2])*fSectors->GetAlpha();
3813 cs = TMath::Cos(alpha);
3814 sn = TMath::Sin(alpha);
3815 xx2= xyz[1][0]*cs-xyz[1][1]*sn;
3816 yy2= xyz[1][0]*sn+xyz[1][1]*cs;
3817 xyz[1][0] = xx2;
3818 xyz[1][1] = yy2;
3819 //
3820 alpha = (sec[0]-sec[2])*fSectors->GetAlpha();
3821 cs = TMath::Cos(alpha);
3822 sn = TMath::Sin(alpha);
3823 xx2= xyz[0][0]*cs-xyz[0][1]*sn;
3824 yy2= xyz[0][0]*sn+xyz[0][1]*cs;
3825 xyz[0][0] = xx2;
3826 xyz[0][1] = yy2;
3827 //
3828 //
3829 //
3830 Double_t x[5],c[15];
3831 //
3832 x[0]=xyz[2][1];
3833 x[1]=xyz[2][2];
3834 x[4]=F1(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1]);
3835 x[2]=F2(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1]);
3836 x[3]=F3n(xyz[2][0],xyz[2][1],xyz[0][0],xyz[0][1],xyz[2][2],xyz[0][2],x[4]);
3837 //
3838 Double_t sy =0.1, sz =0.1;
3839 //
3840 Double_t sy1=0.2, sz1=0.2;
3841 Double_t sy2=0.2, sz2=0.2;
3842 Double_t sy3=0.2;
3843 //
3844 Double_t f40=(F1(xyz[2][0],xyz[2][1]+sy,xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1])-x[4])/sy;
3845 Double_t f42=(F1(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1]+sy,xyz[0][0],xyz[0][1])-x[4])/sy;
3846 Double_t f43=(F1(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1]+sy)-x[4])/sy;
3847 Double_t f20=(F2(xyz[2][0],xyz[2][1]+sy,xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1])-x[2])/sy;
3848 Double_t f22=(F2(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1]+sy,xyz[0][0],xyz[0][1])-x[2])/sy;
3849 Double_t f23=(F2(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1]+sy)-x[2])/sy;
3850 //
3851 Double_t f30=(F3(xyz[2][0],xyz[2][1]+sy,xyz[0][0],xyz[0][1],xyz[2][2],xyz[0][2])-x[3])/sy;
3852 Double_t f31=(F3(xyz[2][0],xyz[2][1],xyz[0][0],xyz[0][1],xyz[2][2]+sz,xyz[0][2])-x[3])/sz;
3853 Double_t f32=(F3(xyz[2][0],xyz[2][1],xyz[0][0],xyz[0][1]+sy,xyz[2][2],xyz[0][2])-x[3])/sy;
3854 Double_t f34=(F3(xyz[2][0],xyz[2][1],xyz[0][0],xyz[0][1],xyz[2][2],xyz[0][2]+sz)-x[3])/sz;
3855
3856
3857 c[0]=sy1;
3858 c[1]=0.; c[2]=sz1;
3859 c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23;
3860 c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22;
3861 c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34;
3862 c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23;
3863 c[13]=f30*sy1*f40+f32*sy2*f42;
3864 c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43;
3865
3866 // Int_t row1 = fSectors->GetRowNumber(xyz[2][0]);
6c94f330 3867 AliTPCseed *seed=new AliTPCseed(xyz[2][0], sec[2]*fSectors->GetAlpha()+fSectors->GetAlphaShift(), x, c, 0);
b9671574 3868 seed->SetLastPoint(row[2]);
3869 seed->SetFirstPoint(row[2]);
d26d9159 3870 return seed;
3871}
3872
eea478d3 3873
3874AliTPCseed *AliTPCtrackerMI::ReSeed(AliTPCseed *track,Int_t r0, Bool_t forward)
3875{
3876 //
3877 //
3878 //reseed using founded clusters
3879 //
3880 Double_t xyz[3][3];
4a12af72 3881 Int_t row[3]={0,0,0};
3882 Int_t sec[3]={0,0,0};
eea478d3 3883 //
3884 // forward direction
3885 if (forward){
3886 for (Int_t irow=r0;irow<160;irow++){
3887 if (track->GetClusterIndex(irow)>0){
3888 row[0] = irow;
3889 break;
3890 }
3891 }
3892 for (Int_t irow=160;irow>r0;irow--){
3893 if (track->GetClusterIndex(irow)>0){
3894 row[2] = irow;
3895 break;
3896 }
3897 }
3898 for (Int_t irow=row[2]-15;irow>row[0];irow--){
3899 if (track->GetClusterIndex(irow)>0){
3900 row[1] = irow;
3901 break;
3902 }
3903 }
3904 //
3905 }
3906 if (!forward){
3907 for (Int_t irow=0;irow<r0;irow++){
3908 if (track->GetClusterIndex(irow)>0){
3909 row[0] = irow;
3910 break;
3911 }
3912 }
3913 for (Int_t irow=r0;irow>0;irow--){
3914 if (track->GetClusterIndex(irow)>0){
3915 row[2] = irow;
3916 break;
3917 }
3918 }
3919 for (Int_t irow=row[2]-15;irow>row[0];irow--){
3920 if (track->GetClusterIndex(irow)>0){
3921 row[1] = irow;
3922 break;
3923 }
3924 }
3925 }
3926 //
3927 if ((row[2]-row[0])<20) return 0;
3928 if (row[1]==0) return 0;
3929 //
3930 //
3931 //Get cluster and sector position
3932 for (Int_t ipoint=0;ipoint<3;ipoint++){
3933 Int_t clindex = track->GetClusterIndex2(row[ipoint]);
3934 AliTPCclusterMI * cl = GetClusterMI(clindex);
3935 if (cl==0) {
3936 //Error("Bug\n");
3937 // AliTPCclusterMI * cl = GetClusterMI(clindex);
3938 return 0;
3939 }
3940 sec[ipoint] = ((clindex&0xff000000)>>24)%18;
3941 xyz[ipoint][0] = GetXrow(row[ipoint]);
3942 AliTPCTrackerPoint * point = track->GetTrackPoint(row[ipoint]);
3943 if (point&&ipoint<2){
3944 //
3945 xyz[ipoint][1] = point->GetY();
3946 xyz[ipoint][2] = point->GetZ();
3947 }
3948 else{
3949 xyz[ipoint][1] = cl->GetY();
3950 xyz[ipoint][2] = cl->GetZ();
3951 }
3952 }
3953 //
3954 //
3955 //
3956 //
3957 // Calculate seed state vector and covariance matrix
3958
3959 Double_t alpha, cs,sn, xx2,yy2;
3960 //
3961 alpha = (sec[1]-sec[2])*fSectors->GetAlpha();
3962 cs = TMath::Cos(alpha);
3963 sn = TMath::Sin(alpha);
3964 xx2= xyz[1][0]*cs-xyz[1][1]*sn;
3965 yy2= xyz[1][0]*sn+xyz[1][1]*cs;
3966 xyz[1][0] = xx2;
3967 xyz[1][1] = yy2;
3968 //
3969 alpha = (sec[0]-sec[2])*fSectors->GetAlpha();
3970 cs = TMath::Cos(alpha);
3971 sn = TMath::Sin(alpha);
3972 xx2= xyz[0][0]*cs-xyz[0][1]*sn;
3973 yy2= xyz[0][0]*sn+xyz[0][1]*cs;
3974 xyz[0][0] = xx2;
3975 xyz[0][1] = yy2;
3976 //
3977 //
3978 //
3979 Double_t x[5],c[15];
3980 //
3981 x[0]=xyz[2][1];
3982 x[1]=xyz[2][2];
3983 x[4]=F1(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1]);
3984 x[2]=F2(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1]);
3985 x[3]=F3n(xyz[2][0],xyz[2][1],xyz[0][0],xyz[0][1],xyz[2][2],xyz[0][2],x[4]);
3986 //
3987 Double_t sy =0.1, sz =0.1;
3988 //
3989 Double_t sy1=0.2, sz1=0.2;
3990 Double_t sy2=0.2, sz2=0.2;
3991 Double_t sy3=0.2;
3992 //
3993 Double_t f40=(F1(xyz[2][0],xyz[2][1]+sy,xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1])-x[4])/sy;
3994 Double_t f42=(F1(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1]+sy,xyz[0][0],xyz[0][1])-x[4])/sy;
3995 Double_t f43=(F1(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1]+sy)-x[4])/sy;
3996 Double_t f20=(F2(xyz[2][0],xyz[2][1]+sy,xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1])-x[2])/sy;
3997 Double_t f22=(F2(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1]+sy,xyz[0][0],xyz[0][1])-x[2])/sy;
3998 Double_t f23=(F2(xyz[2][0],xyz[2][1],xyz[1][0],xyz[1][1],xyz[0][0],xyz[0][1]+sy)-x[2])/sy;
3999 //
4000 Double_t f30=(F3(xyz[2][0],xyz[2][1]+sy,xyz[0][0],xyz[0][1],xyz[2][2],xyz[0][2])-x[3])/sy;
4001 Double_t f31=(F3(xyz[2][0],xyz[2][1],xyz[0][0],xyz[0][1],xyz[2][2]+sz,xyz[0][2])-x[3])/sz;
4002 Double_t f32=(F3(xyz[2][0],xyz[2][1],xyz[0][0],xyz[0][1]+sy,xyz[2][2],xyz[0][2])-x[3])/sy;
4003 Double_t f34=(F3(xyz[2][0],xyz[2][1],xyz[0][0],xyz[0][1],xyz[2][2],xyz[0][2]+sz)-x[3])/sz;
4004
4005
4006 c[0]=sy1;
4007 c[1]=0.; c[2]=sz1;
4008 c[3]=f20*sy1; c[4]=0.; c[5]=f20*sy1*f20+f22*sy2*f22+f23*sy3*f23;
4009 c[6]=f30*sy1; c[7]=f31*sz1; c[8]=f30*sy1*f20+f32*sy2*f22;
4010 c[9]=f30*sy1*f30+f31*sz1*f31+f32*sy2*f32+f34*sz2*f34;
4011 c[10]=f40*sy1; c[11]=0.; c[12]=f40*sy1*f20+f42*sy2*f22+f43*sy3*f23;
4012 c[13]=f30*sy1*f40+f32*sy2*f42;
4013 c[14]=f40*sy1*f40+f42*sy2*f42+f43*sy3*f43;
4014
4015 // Int_t row1 = fSectors->GetRowNumber(xyz[2][0]);
6c94f330 4016 AliTPCseed *seed=new AliTPCseed(xyz[2][0], sec[2]*fSectors->GetAlpha()+fSectors->GetAlphaShift(), x, c, 0);
b9671574 4017 seed->SetLastPoint(row[2]);
4018 seed->SetFirstPoint(row[2]);
eea478d3 4019 for (Int_t i=row[0];i<row[2];i++){
b9671574 4020 seed->SetClusterIndex(i, track->GetClusterIndex(i));
eea478d3 4021 }
4022
4023 return seed;
4024}
4025
51ad6848 4026void AliTPCtrackerMI::FindKinks(TObjArray * array, AliESD *esd)
4027{
4028 //
4029 // find kinks
4030 //
4031 //
eea478d3 4032
51ad6848 4033 TObjArray *kinks= new TObjArray(10000);
81e97e0d 4034 // TObjArray *v0s= new TObjArray(10000);
51ad6848 4035 Int_t nentries = array->GetEntriesFast();
4036 AliHelix *helixes = new AliHelix[nentries];
4037 Int_t *sign = new Int_t[nentries];
4038 Int_t *nclusters = new Int_t[nentries];
4039 Float_t *alpha = new Float_t[nentries];
6c94f330 4040 AliKink *kink = new AliKink();
51ad6848 4041 Int_t * usage = new Int_t[nentries];
eea478d3 4042 Float_t *zm = new Float_t[nentries];
4043 Float_t *z0 = new Float_t[nentries];
4044 Float_t *fim = new Float_t[nentries];
4045 Float_t *shared = new Float_t[nentries];
4046 Bool_t *circular = new Bool_t[nentries];
81e97e0d 4047 Float_t *dca = new Float_t[nentries];
4048 //const AliESDVertex * primvertex = esd->GetVertex();
eea478d3 4049 //
4050 // nentries = array->GetEntriesFast();
4051 //
4052
51ad6848 4053 //
4054 //
4055 for (Int_t i=0;i<nentries;i++){
4056 sign[i]=0;
4057 usage[i]=0;
4058 AliTPCseed* track = (AliTPCseed*)array->At(i);
4059 if (!track) continue;
b9671574 4060 track->SetCircular(0);
eea478d3 4061 shared[i] = kFALSE;
51ad6848 4062 track->UpdatePoints();
4063 if (( track->GetPoints()[2]- track->GetPoints()[0])>5 && track->GetPoints()[3]>0.8){
51ad6848 4064 }
eea478d3 4065 nclusters[i]=track->GetNumberOfClusters();
4066 alpha[i] = track->GetAlpha();
4067 new (&helixes[i]) AliHelix(*track);
4068 Double_t xyz[3];
4069 helixes[i].Evaluate(0,xyz);
4070 sign[i] = (track->GetC()>0) ? -1:1;
4071 Double_t x,y,z;
4072 x=160;
4073 if (track->GetProlongation(x,y,z)){
4074 zm[i] = z;
4075 fim[i] = alpha[i]+TMath::ATan2(y,x);
4076 }
4077 else{
4078 zm[i] = track->GetZ();
4079 fim[i] = alpha[i];
4080 }
4081 z0[i]=1000;
4082 circular[i]= kFALSE;
81e97e0d 4083 if (track->GetProlongation(0,y,z)) z0[i] = z;
4084 dca[i] = track->GetD(0,0);
51ad6848 4085 }
4086 //
4087 //
4088 TStopwatch timer;
4089 timer.Start();
4090 Int_t ncandidates =0;
4091 Int_t nall =0;
4092 Int_t ntracks=0;
4093 Double_t phase[2][2],radius[2];
eea478d3 4094
4095 //
4096 // Find circling track
81e97e0d 4097 TTreeSRedirector &cstream = *fDebugStreamer;
eea478d3 4098 //
4099 for (Int_t i0=0;i0<nentries;i0++){
4100 AliTPCseed * track0 = (AliTPCseed*)array->At(i0);
4101 if (!track0) continue;
b9671574 4102 if (track0->GetNumberOfClusters()<40) continue;
6c94f330 4103 if (TMath::Abs(1./track0->GetC())>200) continue;
eea478d3 4104 for (Int_t i1=i0+1;i1<nentries;i1++){
4105 AliTPCseed * track1 = (AliTPCseed*)array->At(i1);
4106 if (!track1) continue;
b9671574 4107 if (track1->GetNumberOfClusters()<40) continue;
6c94f330 4108 if ( TMath::Abs(track1->GetTgl()+track0->GetTgl())>0.1) continue;
b9671574 4109 if (track0->GetBConstrain()&&track1->GetBConstrain()) continue;
6c94f330 4110 if (TMath::Abs(1./track1->GetC())>200) continue;
4111 if (track1->Get1Pt()*track0->Get1Pt()>0) continue;
4112 if (track1->GetTgl()*track0->GetTgl()>0) continue;
4113 if (max(TMath::Abs(1./track0->GetC()),TMath::Abs(1./track1->GetC()))>190) continue;
b9671574 4114 if (track0->GetBConstrain()&&TMath::Abs(track1->Get1Pt())<TMath::Abs(track0->Get1Pt())) continue; //returning - lower momenta
4115 if (track1->GetBConstrain()&&TMath::Abs(track0->Get1Pt())<TMath::Abs(track1->Get1Pt())) continue; //returning - lower momenta
eea478d3 4116 //
81e97e0d 4117 Float_t mindcar = TMath::Min(TMath::Abs(dca[i0]),TMath::Abs(dca[i1]));
4118 if (mindcar<5) continue;
4119 Float_t mindcaz = TMath::Min(TMath::Abs(z0[i0]-GetZ()),TMath::Abs(z0[i1]-GetZ()));
4120 if (mindcaz<5) continue;
4121 if (mindcar+mindcaz<20) continue;
4122 //
4123 //
eea478d3 4124 Float_t xc0 = helixes[i0].GetHelix(6);
4125 Float_t yc0 = helixes[i0].GetHelix(7);
4126 Float_t r0 = helixes[i0].GetHelix(8);
4127 Float_t xc1 = helixes[i1].GetHelix(6);
4128 Float_t yc1 = helixes[i1].GetHelix(7);
4129 Float_t r1 = helixes[i1].GetHelix(8);
4130
4131 Float_t rmean = (r0+r1)*0.5;
4132 Float_t delta =TMath::Sqrt((xc1-xc0)*(xc1-xc0)+(yc1-yc0)*(yc1-yc0));
81e97e0d 4133 //if (delta>30) continue;
eea478d3 4134 if (delta>rmean*0.25) continue;
4135 if (TMath::Abs(r0-r1)/rmean>0.3) continue;
4136 //
4137 Int_t npoints = helixes[i0].GetRPHIintersections(helixes[i1], phase, radius,10);
4138 if (npoints==0) continue;
4139 helixes[i0].GetClosestPhases(helixes[i1], phase);
4140 //
4141 Double_t xyz0[3];
4142 Double_t xyz1[3];
4143 Double_t hangles[3];
4144 helixes[i0].Evaluate(phase[0][0],xyz0);
4145 helixes[i1].Evaluate(phase[0][1],xyz1);
4146
4147 helixes[i0].GetAngle(phase[0][0],helixes[i1],phase[0][1],hangles);
4148 Double_t deltah[2],deltabest;
4149 if (hangles[2]<2.8) continue;
4150 /*
4151 cstream<<"C"<<track0->fLab<<track1->fLab<<
4152 track0->fP3<<track1->fP3<<
4153 track0->fP4<<track1->fP4<<
4154 delta<<rmean<<npoints<<
4155 hangles[0]<<hangles[2]<<
4156 xyz0[2]<<xyz1[2]<<radius[0]<<"\n";
4157 */
4158 if (npoints>0){
4159 Int_t ibest=0;
81e97e0d 4160 helixes[i0].ParabolicDCA(helixes[i1],phase[0][0],phase[0][1],radius[0],deltah[0],2);
eea478d3 4161 if (npoints==2){
81e97e0d 4162 helixes[i0].ParabolicDCA(helixes[i1],phase[1][0],phase[1][1],radius[1],deltah[1],2);
eea478d3 4163 if (deltah[1]<deltah[0]) ibest=1;
4164 }
4165 deltabest = TMath::Sqrt(deltah[ibest]);
4166 helixes[i0].Evaluate(phase[ibest][0],xyz0);
4167 helixes[i1].Evaluate(phase[ibest][1],xyz1);
4168 helixes[i0].GetAngle(phase[ibest][0],helixes[i1],phase[ibest][1],hangles);
81e97e0d 4169 Double_t radiusbest = TMath::Sqrt(radius[ibest]);
eea478d3 4170 //
81e97e0d 4171 if (deltabest>6) continue;
4172 if (mindcar+mindcaz<40 && (hangles[2]<3.12||deltabest>3)) continue;
eea478d3 4173 Bool_t sign =kFALSE;
81e97e0d 4174 if (hangles[2]>3.06) sign =kTRUE;
4175 //
eea478d3 4176 if (sign){
4177 circular[i0] = kTRUE;
81e97e0d 4178 circular[i1] = kTRUE;
6c94f330 4179 if (TMath::Abs(track0->Get1Pt())<TMath::Abs(track1->Get1Pt())){
b9671574 4180 track0->SetCircular(track0->GetCircular()+1);
4181 track1->SetCircular(track1->GetCircular()+2);
81e97e0d 4182 }
4183 else{
b9671574 4184 track1->SetCircular(track1->GetCircular()+1);
4185 track0->SetCircular(track0->GetCircular()+2);
81e97e0d 4186 }
4187 }
34acb742 4188 if (sign&&AliTPCReconstructor::StreamLevel()>1){
4189 //debug stream
b9671574 4190 Int_t lab0=track0->GetLabel();
4191 Int_t lab1=track1->GetLabel();
81e97e0d 4192 cstream<<"Curling"<<
b9671574 4193 "lab0="<<lab0<<
4194 "lab1="<<lab1<<
81e97e0d 4195 "Tr0.="<<track0<<
4196 "Tr1.="<<track1<<
4197 "dca0="<<dca[i0]<<
4198 "dca1="<<dca[i1]<<
4199 "mindcar="<<mindcar<<
4200 "mindcaz="<<mindcaz<<
4201 "delta="<<delta<<
4202 "rmean="<<rmean<<
4203 "npoints="<<npoints<<
4204 "hangles0="<<hangles[0]<<
4205 "hangles2="<<hangles[2]<<
4206 "xyz0="<<xyz0[2]<<
4207 "xyzz1="<<xyz1[2]<<
4208 "z0="<<z0[i0]<<
4209 "z1="<<z0[i1]<<
4210 "radius="<<radiusbest<<
4211 "deltabest="<<deltabest<<
4212 "phase0="<<phase[ibest][0]<<
4213 "phase1="<<phase[ibest][1]<<
4214 "\n";
eea478d3 4215 }
4216 }
4217 }
4218 }
4219 //
81e97e0d 4220 // Finf kinks loop
4221 //
51ad6848 4222 //
4223 for (Int_t i =0;i<nentries;i++){
4224 if (sign[i]==0) continue;
4225 AliTPCseed * track0 = (AliTPCseed*)array->At(i);
4226 ntracks++;
4227 //
4228 Double_t cradius0 = 40*40;
4229 Double_t cradius1 = 270*270;
4230 Double_t cdist1=8.;
4231 Double_t cdist2=8.;
4232 Double_t cdist3=0.55;
4233 for (Int_t j =i+1;j<nentries;j++){
4234 nall++;
4235 if (sign[j]*sign[i]<1) continue;
4236 if ( (nclusters[i]+nclusters[j])>200) continue;
4237 if ( (nclusters[i]+nclusters[j])<80) continue;
4238 if ( TMath::Abs(zm[i]-zm[j])>60.) continue;
4239 if ( TMath::Abs(fim[i]-fim[j])>0.6 && TMath::Abs(fim[i]-fim[j])<5.7 ) continue;
4240 //AliTPCseed * track1 = (AliTPCseed*)array->At(j); Double_t phase[2][2],radius[2];
4241 Int_t npoints = helixes[i].GetRPHIintersections(helixes[j], phase, radius,20);
4242 if (npoints<1) continue;
4243 // cuts on radius
4244 if (npoints==1){
4245 if (radius[0]<cradius0||radius[0]>cradius1) continue;
4246 }
4247 else{
4248 if ( (radius[0]<cradius0||radius[0]>cradius1) && (radius[1]<cradius0||radius[1]>cradius1) ) continue;
4249 }
4250 //
4251 Double_t delta1=10000,delta2=10000;
4252 // cuts on the intersection radius
4253 helixes[i].LinearDCA(helixes[j],phase[0][0],phase[0][1],radius[0],delta1);
4254 if (radius[0]<20&&delta1<1) continue; //intersection at vertex
4255 if (radius[0]<10&&delta1<3) continue; //intersection at vertex
4256 if (npoints==2){
4257 helixes[i].LinearDCA(helixes[j],phase[1][0],phase[1][1],radius[1],delta2);
4258 if (radius[1]<20&&delta2<1) continue; //intersection at vertex
4259 if (radius[1]<10&&delta2<3) continue; //intersection at vertex
4260 }
4261 //
4262 Double_t distance1 = TMath::Min(delta1,delta2);
4263 if (distance1>cdist1) continue; // cut on DCA linear approximation
4264 //
4265 npoints = helixes[i].GetRPHIintersections(helixes[j], phase, radius,20);
4266 helixes[i].ParabolicDCA(helixes[j],phase[0][0],phase[0][1],radius[0],delta1);
4267 if (radius[0]<20&&delta1<1) continue; //intersection at vertex
4268 if (radius[0]<10&&delta1<3) continue; //intersection at vertex
4269 //
4270 if (npoints==2){
4271 helixes[i].ParabolicDCA(helixes[j],phase[1][0],phase[1][1],radius[1],delta2);
4272 if (radius[1]<20&&delta2<1) continue; //intersection at vertex
4273 if (radius[1]<10&&delta2<3) continue; //intersection at vertex
4274 }
4275 distance1 = TMath::Min(delta1,delta2);
4276 Float_t rkink =0;
4277 if (delta1<delta2){
4278 rkink = TMath::Sqrt(radius[0]);
4279 }
4280 else{
4281 rkink = TMath::Sqrt(radius[1]);
4282 }
4283 if (distance1>cdist2) continue;
4284 //
4285 //
4286 AliTPCseed * track1 = (AliTPCseed*)array->At(j);
4287 //
4288 //
4289 Int_t row0 = GetRowNumber(rkink);
4290 if (row0<10) continue;
4291 if (row0>150) continue;
4292 //
4293 //
4294 Float_t dens00=-1,dens01=-1;
4295 Float_t dens10=-1,dens11=-1;
4296 //
4297 Int_t found,foundable,shared;
4298 track0->GetClusterStatistic(0,row0-5, found, foundable,shared,kFALSE);
4299 if (foundable>5) dens00 = Float_t(found)/Float_t(foundable);
4300 track0->GetClusterStatistic(row0+5,155, found, foundable,shared,kFALSE);
4301 if (foundable>5) dens01 = Float_t(found)/Float_t(foundable);
4302 //
4303 track1->GetClusterStatistic(0,row0-5, found, foundable,shared,kFALSE);
4304 if (foundable>10) dens10 = Float_t(found)/Float_t(foundable);
4305 track1->GetClusterStatistic(row0+5,155, found, foundable,shared,kFALSE);
4306 if (foundable>10) dens11 = Float_t(found)/Float_t(foundable);
eea478d3 4307 //
51ad6848 4308 if (dens00<dens10 && dens01<dens11) continue;
4309 if (dens00>dens10 && dens01>dens11) continue;
4310 if (TMath::Max(dens00,dens10)<0.1) continue;
4311 if (TMath::Max(dens01,dens11)<0.3) continue;
4312 //
4313 if (TMath::Min(dens00,dens10)>0.6) continue;
4314 if (TMath::Min(dens01,dens11)>0.6) continue;
4315
4316 //
4317 AliTPCseed * ktrack0, *ktrack1;
4318 if (dens00>dens10){
4319 ktrack0 = track0;
4320 ktrack1 = track1;
4321 }
4322 else{
4323 ktrack0 = track1;
4324 ktrack1 = track0;
4325 }
4326 if (TMath::Abs(ktrack0->GetC())>5) continue; // cut on the curvature for mother particle
4327 AliExternalTrackParam paramm(*ktrack0);
4328 AliExternalTrackParam paramd(*ktrack1);
c9ec41e8 4329 if (row0>60&&ktrack1->GetReference().GetX()>90.) new (&paramd) AliExternalTrackParam(ktrack1->GetReference());
51ad6848 4330 //
4331 //
4332 kink->SetMother(paramm);
4333 kink->SetDaughter(paramd);
4334 kink->Update();
4335
eea478d3 4336 Float_t x[3] = { kink->GetPosition()[0],kink->GetPosition()[1],kink->GetPosition()[2]};
51ad6848 4337 Int_t index[4];
4338 fParam->Transform0to1(x,index);
4339 fParam->Transform1to2(x,index);
4340 row0 = GetRowNumber(x[0]);
4341
eea478d3 4342 if (kink->GetR()<100) continue;
4343 if (kink->GetR()>240) continue;
4344 if (kink->GetPosition()[2]/kink->GetR()>AliTPCReconstructor::GetCtgRange()) continue; //out of fiducial volume
4345 if (kink->GetDistance()>cdist3) continue;
4346 Float_t dird = kink->GetDaughterP()[0]*kink->GetPosition()[0]+kink->GetDaughterP()[1]*kink->GetPosition()[1]; // rough direction estimate
51ad6848 4347 if (dird<0) continue;
4348
eea478d3 4349 Float_t dirm = kink->GetMotherP()[0]*kink->GetPosition()[0]+kink->GetMotherP()[1]*kink->GetPosition()[1]; // rough direction estimate
51ad6848 4350 if (dirm<0) continue;
eea478d3 4351 Float_t mpt = TMath::Sqrt(kink->GetMotherP()[0]*kink->GetMotherP()[0]+kink->GetMotherP()[1]*kink->GetMotherP()[1]);
51ad6848 4352 if (mpt<0.2) continue;
4353
eea478d3 4354 if (mpt<1){
4355 //for high momenta momentum not defined well in first iteration
6c94f330 4356 Double_t qt = TMath::Sin(kink->GetAngle(2))*ktrack1->GetP();
eea478d3 4357 if (qt>0.35) continue;
4358 }
51ad6848 4359
eea478d3 4360 kink->SetLabel(CookLabel(ktrack0,0.4,0,row0),0);
4361 kink->SetLabel(CookLabel(ktrack1,0.4,row0,160),1);
51ad6848 4362 if (dens00>dens10){
eea478d3 4363 kink->SetTPCDensity(dens00,0,0);
4364 kink->SetTPCDensity(dens01,0,1);
4365 kink->SetTPCDensity(dens10,1,0);
4366 kink->SetTPCDensity(dens11,1,1);
4367 kink->SetIndex(i,0);
4368 kink->SetIndex(j,1);
51ad6848 4369 }
4370 else{
eea478d3 4371 kink->SetTPCDensity(dens10,0,0);
4372 kink->SetTPCDensity(dens11,0,1);
4373 kink->SetTPCDensity(dens00,1,0);
4374 kink->SetTPCDensity(dens01,1,1);
4375 kink->SetIndex(j,0);
4376 kink->SetIndex(i,1);
51ad6848 4377 }
51ad6848 4378
eea478d3 4379 if (mpt<1||kink->GetAngle(2)>0.1){
4380 // angle and densities not defined yet
4381 if (kink->GetTPCDensityFactor()<0.8) continue;
4382 if ((2-kink->GetTPCDensityFactor())*kink->GetDistance() >0.25) continue;
6c94f330 4383 if (kink->GetAngle(2)*ktrack0->GetP()<0.003) continue; //too small angle
eea478d3 4384 if (kink->GetAngle(2)>0.2&&kink->GetTPCDensityFactor()<1.15) continue;
4385 if (kink->GetAngle(2)>0.2&&kink->GetTPCDensity(0,1)>0.05) continue;
4386
6c94f330 4387 Float_t criticalangle = track0->GetSigmaSnp2()+track0->GetSigmaTgl2();
4388 criticalangle+= track1->GetSigmaSnp2()+track1->GetSigmaTgl2();
eea478d3 4389 criticalangle= 3*TMath::Sqrt(criticalangle);
4390 if (criticalangle>0.02) criticalangle=0.02;
4391 if (kink->GetAngle(2)<criticalangle) continue;
4392 }
51ad6848 4393 //
eea478d3 4394 Int_t drow = Int_t(2.+0.5/(0.05+kink->GetAngle(2))); // overlap region defined
51ad6848 4395 Float_t shapesum =0;
4396 Float_t sum = 0;
4397 for ( Int_t row = row0-drow; row<row0+drow;row++){
4398 if (row<0) continue;
4399 if (row>155) continue;
b9671574 4400 if (ktrack0->GetClusterPointer(row)){
51ad6848 4401 AliTPCTrackerPoint *point =ktrack0->GetTrackPoint(row);
4402 shapesum+=point->GetSigmaY()+point->GetSigmaZ();
4403 sum++;
4404 }
b9671574 4405 if (ktrack1->GetClusterPointer(row)){
51ad6848 4406 AliTPCTrackerPoint *point =ktrack1->GetTrackPoint(row);
4407 shapesum+=point->GetSigmaY()+point->GetSigmaZ();
4408 sum++;
4409 }
4410 }
4411 if (sum<4){
eea478d3 4412 kink->SetShapeFactor(-1.);
51ad6848 4413 }
4414 else{
eea478d3 4415 kink->SetShapeFactor(shapesum/sum);
4416 }
51ad6848 4417 // esd->AddKink(kink);
4418 kinks->AddLast(kink);
6c94f330 4419 kink = new AliKink;
51ad6848 4420 ncandidates++;
4421 }
4422 }
eea478d3 4423 //
4424 // sort the kinks according quality - and refit them towards vertex
4425 //
4426 Int_t nkinks = kinks->GetEntriesFast();
4427 Float_t *quality = new Float_t[nkinks];
4428 Int_t *indexes = new Int_t[nkinks];
4429 AliTPCseed *mothers = new AliTPCseed[nkinks];
4430 AliTPCseed *daughters = new AliTPCseed[nkinks];
4431 //
4432 //
51ad6848 4433 for (Int_t i=0;i<nkinks;i++){
4434 quality[i] =100000;
6c94f330 4435 AliKink *kink = (AliKink*)kinks->At(i);
eea478d3 4436 //
4437 // refit kinks towards vertex
4438 //
4439 Int_t index0 = kink->GetIndex(0);
4440 Int_t index1 = kink->GetIndex(1);
4441 AliTPCseed * ktrack0 = (AliTPCseed*)array->At(index0);
4442 AliTPCseed * ktrack1 = (AliTPCseed*)array->At(index1);
4443 //
b9671574 4444 Int_t sumn=ktrack0->GetNumberOfClusters()+ktrack1->GetNumberOfClusters();
eea478d3 4445 //
4446 // Refit Kink under if too small angle
4447 //
4448 if (kink->GetAngle(2)<0.05){
4449 kink->SetTPCRow0(GetRowNumber(kink->GetR()));
4450 Int_t row0 = kink->GetTPCRow0();
4451 Int_t drow = Int_t(2.+0.5/(0.05+kink->GetAngle(2)));
4452 //
4453 //
4454 Int_t last = row0-drow;
4455 if (last<40) last=40;
b9671574 4456 if (last<ktrack0->GetFirstPoint()+25) last = ktrack0->GetFirstPoint()+25;
eea478d3 4457 AliTPCseed* seed0 = ReSeed(ktrack0,last,kFALSE);
4458 //
4459 //
4460 Int_t first = row0+drow;
4461 if (first>130) first=130;
b9671574 4462 if (first>ktrack1->GetLastPoint()-25) first = TMath::Max(ktrack1->GetLastPoint()-25,30);
eea478d3 4463 AliTPCseed* seed1 = ReSeed(ktrack1,first,kTRUE);
4464 //
4465 if (seed0 && seed1){
4466 kink->SetStatus(1,8);
4467 if (RefitKink(*seed0,*seed1,*kink)) kink->SetStatus(1,9);
4468 row0 = GetRowNumber(kink->GetR());
b9671574 4469 sumn = seed0->GetNumberOfClusters()+seed1->GetNumberOfClusters();
eea478d3 4470 new (&mothers[i]) AliTPCseed(*seed0);
4471 new (&daughters[i]) AliTPCseed(*seed1);
4472 }
4473 else{
4474 delete kinks->RemoveAt(i);
4475 if (seed0) delete seed0;
4476 if (seed1) delete seed1;
4477 continue;
4478 }
4479 if (kink->GetDistance()>0.5 || kink->GetR()<110 || kink->GetR()>240) {
4480 delete kinks->RemoveAt(i);
4481 if (seed0) delete seed0;
4482 if (seed1) delete seed1;
4483 continue;
4484 }
4485 //
4486 delete seed0;
4487 delete seed1;
4488 }
4489 //
4490 if (kink) quality[i] = 160*((0.1+kink->GetDistance())*(2.-kink->GetTPCDensityFactor()))/(sumn+40.); //the longest -clossest will win
51ad6848 4491 }
4492 TMath::Sort(nkinks,quality,indexes,kFALSE);
eea478d3 4493 //
4494 //remove double find kinks
4495 //
4496 for (Int_t ikink0=1;ikink0<nkinks;ikink0++){
6c94f330 4497 AliKink * kink0 = (AliKink*) kinks->At(indexes[ikink0]);
eea478d3 4498 if (!kink0) continue;
4499 //
4500 for (Int_t ikink1=0;ikink1<ikink0;ikink1++){
4501 if (!kink0) continue;
6c94f330 4502 AliKink * kink1 = (AliKink*) kinks->At(indexes[ikink1]);
eea478d3 4503 if (!kink1) continue;
4504 // if not close kink continue
4505 if (TMath::Abs(kink1->GetPosition()[2]-kink0->GetPosition()[2])>10) continue;
4506 if (TMath::Abs(kink1->GetPosition()[1]-kink0->GetPosition()[1])>10) continue;
4507 if (TMath::Abs(kink1->GetPosition()[0]-kink0->GetPosition()[0])>10) continue;
4508 //
4509 AliTPCseed &mother0 = mothers[indexes[ikink0]];
4510 AliTPCseed &daughter0 = daughters[indexes[ikink0]];
4511 AliTPCseed &mother1 = mothers[indexes[ikink1]];
4512 AliTPCseed &daughter1 = daughters[indexes[ikink1]];
4513 Int_t row0 = (kink0->GetTPCRow0()+kink1->GetTPCRow0())/2;
4514 //
4515 Int_t same = 0;
4516 Int_t both = 0;
4517 Int_t samem = 0;
4518 Int_t bothm = 0;
4519 Int_t samed = 0;
4520 Int_t bothd = 0;
4521 //
4522 for (Int_t i=0;i<row0;i++){
b9671574 4523 if (mother0.GetClusterIndex(i)>0 && mother1.GetClusterIndex(i)>0){
eea478d3 4524 both++;
4525 bothm++;
b9671574 4526 if (mother0.GetClusterIndex(i)==mother1.GetClusterIndex(i)){
eea478d3 4527 same++;
4528 samem++;
4529 }
4530 }
4531 }
4532
4533 for (Int_t i=row0;i<158;i++){
b9671574 4534 if (daughter0.GetClusterIndex(i)>0 && daughter0.GetClusterIndex(i)>0){
eea478d3 4535 both++;
4536 bothd++;
b9671574 4537 if (mother0.GetClusterIndex(i)==mother1.GetClusterIndex(i)){
eea478d3 4538 same++;
4539 samed++;
4540 }
4541 }
4542 }
4543 Float_t ratio = Float_t(same+1)/Float_t(both+1);
4544 Float_t ratiom = Float_t(samem+1)/Float_t(bothm+1);
4545 Float_t ratiod = Float_t(samed+1)/Float_t(bothd+1);
4546 if (ratio>0.3 && ratiom>0.5 &&ratiod>0.5) {
b9671574 4547 Int_t sum0 = mother0.GetNumberOfClusters()+daughter0.GetNumberOfClusters();
4548 Int_t sum1 = mother1.GetNumberOfClusters()+daughter1.GetNumberOfClusters();
eea478d3 4549 if (sum1>sum0){
4550 shared[kink0->GetIndex(0)]= kTRUE;
4551 shared[kink0->GetIndex(1)]= kTRUE;
4552 delete kinks->RemoveAt(indexes[ikink0]);
4553 }
4554 else{
4555 shared[kink1->GetIndex(0)]= kTRUE;
4556 shared[kink1->GetIndex(1)]= kTRUE;
4557 delete kinks->RemoveAt(indexes[ikink1]);
4558 }
4559 }
4560 }
4561 }
4562
4563
51ad6848 4564 for (Int_t i=0;i<nkinks;i++){
6c94f330 4565 AliKink * kink = (AliKink*) kinks->At(indexes[i]);
eea478d3 4566 if (!kink) continue;
4567 kink->SetTPCRow0(GetRowNumber(kink->GetR()));
4568 Int_t index0 = kink->GetIndex(0);
4569 Int_t index1 = kink->GetIndex(1);
4570 if (circular[index0]||circular[index1]&&kink->GetDistance()>0.2) continue;
4571 kink->SetMultiple(usage[index0],0);
4572 kink->SetMultiple(usage[index1],1);
4573 if (kink->GetMultiple()[0]+kink->GetMultiple()[1]>2) continue;
4574 if (kink->GetMultiple()[0]+kink->GetMultiple()[1]>0 && quality[indexes[i]]>0.2) continue;
4575 if (kink->GetMultiple()[0]+kink->GetMultiple()[1]>0 && kink->GetDistance()>0.2) continue;
4576 if (circular[index0]||circular[index1]&&kink->GetDistance()>0.1) continue;
51ad6848 4577
51ad6848 4578 AliTPCseed * ktrack0 = (AliTPCseed*)array->At(index0);
4579 AliTPCseed * ktrack1 = (AliTPCseed*)array->At(index1);
eea478d3 4580 if (!ktrack0 || !ktrack1) continue;
4581 Int_t index = esd->AddKink(kink);
4582 //
4583 //
b9671574 4584 if ( ktrack0->GetKinkIndex(0)==0 && ktrack1->GetKinkIndex(0)==0) { //best kink
4585 if (mothers[indexes[i]].GetNumberOfClusters()>20 && daughters[indexes[i]].GetNumberOfClusters()>20 && (mothers[indexes[i]].GetNumberOfClusters()+daughters[indexes[i]].GetNumberOfClusters())>100){
eea478d3 4586 new (ktrack0) AliTPCseed(mothers[indexes[i]]);
4587 new (ktrack1) AliTPCseed(daughters[indexes[i]]);
4588 }
4589 }
4590 //
b9671574 4591 ktrack0->SetKinkIndex(usage[index0],-(index+1));
4592 ktrack1->SetKinkIndex(usage[index1], (index+1));
51ad6848 4593 usage[index0]++;
4594 usage[index1]++;
4595 }
eea478d3 4596 //
4597 // Remove tracks corresponding to shared kink's
4598 //
4599 for (Int_t i=0;i<nentries;i++){
4600 AliTPCseed * track0 = (AliTPCseed*)array->At(i);
4601 if (!track0) continue;
b9671574 4602 if (track0->GetKinkIndex(0)!=0) continue;
eea478d3 4603 if (shared[i]) delete array->RemoveAt(i);
4604 }
51ad6848 4605
eea478d3 4606 //
4607 //
4608 RemoveUsed2(array,0.5,0.4,30);
4609 UnsignClusters();
81e97e0d 4610 for (Int_t i=0;i<nentries;i++){
4611 AliTPCseed * track0 = (AliTPCseed*)array->At(i);
4612 if (!track0) continue;
4613 track0->CookdEdx(0.02,0.6);
4614 track0->CookPID();
4615 }
eea478d3 4616 //
4617 for (Int_t i=0;i<nentries;i++){
4618 AliTPCseed * track0 = (AliTPCseed*)array->At(i);
4619 if (!track0) continue;
6c94f330 4620 if (track0->GetPt()<1.4) continue;
eea478d3 4621 //remove double high momenta tracks - overlapped with kink candidates
4622 Int_t shared=0;
4623 Int_t all =0;
b9671574 4624 for (Int_t icl=track0->GetFirstPoint();icl<track0->GetLastPoint(); icl++){
4625 if (track0->GetClusterPointer(icl)!=0){
eea478d3 4626 all++;
b9671574 4627 if (track0->GetClusterPointer(icl)->IsUsed(10)) shared++;
eea478d3 4628 }
4629 }
4630 if (Float_t(shared+1)/Float_t(nall+1)>0.5) {
4631 delete array->RemoveAt(i);
f99dc368 4632 continue;
eea478d3 4633 }
4634 //
b9671574 4635 if (track0->GetKinkIndex(0)!=0) continue;
eea478d3 4636 if (track0->GetNumberOfClusters()<80) continue;
4a12af72 4637
4638 AliTPCseed *pmother = new AliTPCseed();
4639 AliTPCseed *pdaughter = new AliTPCseed();
6c94f330 4640 AliKink *pkink = new AliKink;
4a12af72 4641
4642 AliTPCseed & mother = *pmother;
4643 AliTPCseed & daughter = *pdaughter;
6c94f330 4644 AliKink & kink = *pkink;
eea478d3 4645 if (CheckKinkPoint(track0,mother,daughter, kink)){
b9671574 4646 if (mother.GetNumberOfClusters()<30||daughter.GetNumberOfClusters()<20) {
4a12af72 4647 delete pmother;
4648 delete pdaughter;
4649 delete pkink;
4650 continue; //too short tracks
4651 }
6c94f330 4652 if (mother.GetPt()<1.4) {
4a12af72 4653 delete pmother;
4654 delete pdaughter;
4655 delete pkink;
4656 continue;
4657 }
eea478d3 4658 Int_t row0= kink.GetTPCRow0();
4659 if (kink.GetDistance()>0.5 || kink.GetR()<110. || kink.GetR()>240.) {
4a12af72 4660 delete pmother;
4661 delete pdaughter;
4662 delete pkink;
eea478d3 4663 continue;
4664 }
4665 //
4666 Int_t index = esd->AddKink(&kink);
b9671574 4667 mother.SetKinkIndex(0,-(index+1));
4668 daughter.SetKinkIndex(0,index+1);
4669 if (mother.GetNumberOfClusters()>50) {
eea478d3 4670 delete array->RemoveAt(i);
4671 array->AddAt(new AliTPCseed(mother),i);
4672 }
4673 else{
4674 array->AddLast(new AliTPCseed(mother));
4675 }
4676 array->AddLast(new AliTPCseed(daughter));
4677 for (Int_t icl=0;icl<row0;icl++) {
b9671574 4678 if (mother.GetClusterPointer(icl)) mother.GetClusterPointer(icl)->Use(20);
eea478d3 4679 }
4680 //
4681 for (Int_t icl=row0;icl<158;icl++) {
b9671574 4682 if (daughter.GetClusterPointer(icl)) daughter.GetClusterPointer(icl)->Use(20);
eea478d3 4683 }
4684 //
4685 }
4a12af72 4686 delete pmother;
4687 delete pdaughter;
4688 delete pkink;
eea478d3 4689 }
4690
4691 delete [] daughters;
4692 delete [] mothers;
4693 //
4694 //
81e97e0d 4695 delete [] dca;
eea478d3 4696 delete []circular;
4697 delete []shared;
4698 delete []quality;
4699 delete []indexes;
4700 //
4701 delete kink;
4702 delete[]fim;
51ad6848 4703 delete[] zm;
eea478d3 4704 delete[] z0;
51ad6848 4705 delete [] usage;
4706 delete[] alpha;
4707 delete[] nclusters;
4708 delete[] sign;
4709 delete[] helixes;
4710 kinks->Delete();
4711 delete kinks;
4712
eea478d3 4713 printf("Ncandidates=\t%d\t%d\t%d\t%d\n",esd->GetNumberOfKinks(),ncandidates,ntracks,nall);
51ad6848 4714 timer.Print();
4715}
4716
81e97e0d 4717void AliTPCtrackerMI::FindV0s(TObjArray * array, AliESD *esd)
4718{
4719 //
4720 // find V0s
4721 //
4722 //
4723 TObjArray *tpcv0s = new TObjArray(100000);
4724 Int_t nentries = array->GetEntriesFast();
4725 AliHelix *helixes = new AliHelix[nentries];
4726 Int_t *sign = new Int_t[nentries];
4727 Float_t *alpha = new Float_t[nentries];
4728 Float_t *z0 = new Float_t[nentries];
4729 Float_t *dca = new Float_t[nentries];
4730 Float_t *sdcar = new Float_t[nentries];
4731 Float_t *cdcar = new Float_t[nentries];
4732 Float_t *pulldcar = new Float_t[nentries];
4733 Float_t *pulldcaz = new Float_t[nentries];
4734 Float_t *pulldca = new Float_t[nentries];
4735 Bool_t *isPrim = new Bool_t[nentries];
4736 const AliESDVertex * primvertex = esd->GetVertex();
4737 Double_t zvertex = primvertex->GetZv();
4738 //
4739 // nentries = array->GetEntriesFast();
4740 //
4741 for (Int_t i=0;i<nentries;i++){
4742 sign[i]=0;
4743 isPrim[i]=0;
4744 AliTPCseed* track = (AliTPCseed*)array->At(i);
4745 if (!track) continue;
4746 track->GetV0Indexes()[0] = 0; //rest v0 indexes
4747 track->GetV0Indexes()[1] = 0; //rest v0 indexes
4748 track->GetV0Indexes()[2] = 0; //rest v0 indexes
4749 //
4750 alpha[i] = track->GetAlpha();
4751 new (&helixes[i]) AliHelix(*track);
4752 Double_t xyz[3];
4753 helixes[i].Evaluate(0,xyz);
4754 sign[i] = (track->GetC()>0) ? -1:1;
4755 Double_t x,y,z;
4756 x=160;
4757 z0[i]=1000;
4758 if (track->GetProlongation(0,y,z)) z0[i] = z;
4759 dca[i] = track->GetD(0,0);
4760 //
4761 // dca error parrameterezation + pulls
4762 //
6c94f330 4763 sdcar[i] = TMath::Sqrt(0.150*0.150+(100*track->GetC())*(100*track->GetC()));
4764 if (TMath::Abs(track->GetTgl())>1) sdcar[i]*=2.5;
4765 cdcar[i] = TMath::Exp((TMath::Abs(track->GetC())-0.0106)*525.3);
81e97e0d 4766 pulldcar[i] = (dca[i]-cdcar[i])/sdcar[i];
4767 pulldcaz[i] = (z0[i]-zvertex)/sdcar[i];
4768 pulldca[i] = TMath::Sqrt(pulldcar[i]*pulldcar[i]+pulldcaz[i]*pulldcaz[i]);
b9671574 4769 if (track->TPCrPID(1)+track->TPCrPID(2)+track->TPCrPID(3)>0.5) {
81e97e0d 4770 if (pulldca[i]<3.) isPrim[i]=kTRUE; //pion, muon and Kaon 3 sigma cut
4771 }
b9671574 4772 if (track->TPCrPID(4)>0.5) {
81e97e0d 4773 if (pulldca[i]<0.5) isPrim[i]=kTRUE; //proton 0.5 sigma cut
4774 }
b9671574 4775 if (track->TPCrPID(0)>0.4) {
81e97e0d 4776 isPrim[i]=kFALSE; //electron no sigma cut
4777 }
4778 }
4779 //
4780 //
4781 TStopwatch timer;
4782 timer.Start();
4783 Int_t ncandidates =0;
4784 Int_t nall =0;
4785 Int_t ntracks=0;
4786 Double_t phase[2][2],radius[2];
4787 //
4788 // Finf V0s loop
4789 //
4790 //
4791 // //
4792 TTreeSRedirector &cstream = *fDebugStreamer;
4793 Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
6c94f330 4794 AliV0 vertex;
81e97e0d 4795 Double_t cradius0 = 10*10;
4796 Double_t cradius1 = 200*200;
4797 Double_t cdist1=3.;
4798 Double_t cdist2=4.;
4799 Double_t cpointAngle = 0.95;
4800 //
4801 Double_t delta[2]={10000,10000};
4802 for (Int_t i =0;i<nentries;i++){
4803 if (sign[i]==0) continue;
4804 AliTPCseed * track0 = (AliTPCseed*)array->At(i);
4805 if (!track0) continue;
34acb742 4806 if (AliTPCReconstructor::StreamLevel()>0){
4807 cstream<<"Tracks"<<
4808 "Tr0.="<<track0<<
4809 "dca="<<dca[i]<<
4810 "z0="<<z0[i]<<
4811 "zvertex="<<zvertex<<
4812 "sdcar0="<<sdcar[i]<<
4813 "cdcar0="<<cdcar[i]<<
4814 "pulldcar0="<<pulldcar[i]<<
4815 "pulldcaz0="<<pulldcaz[i]<<
4816 "pulldca0="<<pulldca[i]<<
4817 "isPrim="<<isPrim[i]<<
4818 "\n";
4819 }
81e97e0d 4820 //
6c94f330 4821 if (track0->Get1Pt()<0) continue;
81e97e0d 4822 if (track0->GetKinkIndex(0)>0||isPrim[i]) continue; //daughter kink
4823 //
4824 if (TMath::Abs(helixes[i].GetHelix(4))<0.000000001) continue;
4825 ntracks++;
4826 // debug output
4827
4828
4829 for (Int_t j =0;j<nentries;j++){
4830 AliTPCseed * track1 = (AliTPCseed*)array->At(j);
4831 if (!track1) continue;
4832 if (track1->GetKinkIndex(0)>0 || isPrim[j]) continue; //daughter kink
4833 if (sign[j]*sign[i]>0) continue;
4834 if (TMath::Abs(helixes[j].GetHelix(4))<0.000001) continue;
b9671574 4835 if (track0->GetCircular()+track1->GetCircular()>1) continue; //circling -returning track
81e97e0d 4836 nall++;
4837 //
4838 // DCA to prim vertex cut
4839 //
4840 //
4841 delta[0]=10000;
4842 delta[1]=10000;
4843
4844 Int_t npoints = helixes[i].GetRPHIintersections(helixes[j], phase, radius,cdist2);
4845 if (npoints<1) continue;
4846 Int_t iclosest=0;
4847 // cuts on radius
4848 if (npoints==1){
4849 if (radius[0]<cradius0||radius[0]>cradius1) continue;
4850 helixes[i].LinearDCA(helixes[j],phase[0][0],phase[0][1],radius[0],delta[0]);
4851 if (delta[0]>cdist1) continue;
4852 }
4853 else{
4854 if (TMath::Max(radius[0],radius[1])<cradius0|| TMath::Min(radius[0],radius[1])>cradius1) continue;
4855 helixes[i].LinearDCA(helixes[j],phase[0][0],phase[0][1],radius[0],delta[0]);
4856 helixes[i].LinearDCA(helixes[j],phase[1][0],phase[1][1],radius[1],delta[1]);
4857 if (delta[1]<delta[0]) iclosest=1;
4858 if (delta[iclosest]>cdist1) continue;
4859 }
4860 helixes[i].ParabolicDCA(helixes[j],phase[iclosest][0],phase[iclosest][1],radius[iclosest],delta[iclosest]);
4861 if (radius[iclosest]<cradius0 || radius[iclosest]>cradius1 || delta[iclosest]>cdist1) continue;
4862 //
4863 Double_t pointAngle = helixes[i].GetPointAngle(helixes[j],phase[iclosest],fprimvertex);
4864 if (pointAngle<cpointAngle) continue;
4865 //
4866 Bool_t isGamma = kFALSE;
4867 vertex.SetP(*track0); //track0 - plus
4868 vertex.SetM(*track1); //track1 - minus
4869 vertex.Update(fprimvertex);
b9671574 4870 if (track0->TPCrPID(0)>0.3&&track1->TPCrPID(0)>0.3&&vertex.GetAnglep()[2]<0.15) isGamma=kTRUE; // gamma conversion candidate
81e97e0d 4871 Double_t pointAngle2 = vertex.GetPointAngle();
4872 //continue;
4873 if (vertex.GetPointAngle()<cpointAngle && (!isGamma)) continue; // point angle cut
4874 if (vertex.GetDist2()>2&&(!isGamma)) continue; // point angle cut
4875 Float_t sigmae = 0.15*0.15;
4876 if (vertex.GetRr()<80)
4877 sigmae += (sdcar[i]*sdcar[i]+sdcar[j]*sdcar[j])*(1.-vertex.GetRr()/80.)*(1.-vertex.GetRr()/80.);
4878 sigmae+= TMath::Sqrt(sigmae);
4879 if (vertex.GetDist2()/sigmae>3.&&(!isGamma)) continue;
4880 Float_t densb0=0,densb1=0,densa0=0,densa1=0;
4881 Int_t row0 = GetRowNumber(vertex.GetRr());
4882 if (row0>15){
4883 if (vertex.GetDist2()>0.2) continue;
4884 densb0 = track0->Density2(0,row0-5);
4885 densb1 = track1->Density2(0,row0-5);
4886 if (densb0>0.3|| densb1>0.3) continue; //clusters before vertex
4887 densa0 = track0->Density2(row0+5,row0+40);
4888 densa1 = track1->Density2(row0+5,row0+40);
4889 if ((densa0<0.4|| densa1<0.4)&&(!isGamma)) continue; //missing clusters after vertex
4890 }
4891 else{
4892 densa0 = track0->Density2(0,40); //cluster density
4893 densa1 = track1->Density2(0,40); //cluster density
4894 if ((vertex.GetRr()<80&&densa0+densa1<1.)&&(!isGamma)) continue;
4895 }
4896 vertex.SetLab(0,track0->GetLabel());
4897 vertex.SetLab(1,track1->GetLabel());
4898 vertex.SetChi2After((densa0+densa1)*0.5);
4899 vertex.SetChi2Before((densb0+densb1)*0.5);
4900 vertex.SetIndex(0,i);
4901 vertex.SetIndex(1,j);
4902 vertex.SetStatus(1); // TPC v0 candidate
b9671574 4903 vertex.SetRp(track0->TPCrPIDs());
4904 vertex.SetRm(track1->TPCrPIDs());
d6a49f20 4905 tpcv0s->AddLast(new AliESDv0(vertex));
81e97e0d 4906 ncandidates++;
4907 {
4908 Int_t eventNr = esd->GetEventNumber();
4909 Double_t radiusm= (delta[0]<delta[1])? TMath::Sqrt(radius[0]):TMath::Sqrt(radius[1]);
4910 Double_t deltam= (delta[0]<delta[1])? TMath::Sqrt(delta[0]):TMath::Sqrt(delta[1]);
b9671574 4911 if (AliTPCReconstructor::StreamLevel()>0) {
4912 Int_t lab0=track0->GetLabel();
4913 Int_t lab1=track1->GetLabel();
4914 Char_t c0=track0->GetCircular();
4915 Char_t c1=track1->GetCircular();
34acb742 4916 cstream<<"V0"<<
81e97e0d 4917 "Event="<<eventNr<<
4918 "vertex.="<<&vertex<<
4919 "Tr0.="<<track0<<
b9671574 4920 "lab0="<<lab0<<
81e97e0d 4921 "Helix0.="<<&helixes[i]<<
4922 "Tr1.="<<track1<<
b9671574 4923 "lab1="<<lab1<<
81e97e0d 4924 "Helix1.="<<&helixes[j]<<
4925 "pointAngle="<<pointAngle<<
4926 "pointAngle2="<<pointAngle2<<
4927 "dca0="<<dca[i]<<
4928 "dca1="<<dca[j]<<
4929 "z0="<<z0[i]<<
4930 "z1="<<z0[j]<<
4931 "zvertex="<<zvertex<<
b9671574 4932 "circular0="<<c0<<
4933 "circular1="<<c1<<
81e97e0d 4934 "npoints="<<npoints<<
4935 "radius0="<<radius[0]<<
4936 "delta0="<<delta[0]<<
4937 "radius1="<<radius[1]<<
4938 "delta1="<<delta[1]<<
4939 "radiusm="<<radiusm<<
4940 "deltam="<<deltam<<
4941 "sdcar0="<<sdcar[i]<<
4942 "sdcar1="<<sdcar[j]<<
4943 "cdcar0="<<cdcar[i]<<
4944 "cdcar1="<<cdcar[j]<<
4945 "pulldcar0="<<pulldcar[i]<<
4946 "pulldcar1="<<pulldcar[j]<<
4947 "pulldcaz0="<<pulldcaz[i]<<
4948 "pulldcaz1="<<pulldcaz[j]<<
4949 "pulldca0="<<pulldca[i]<<
4950 "pulldca1="<<pulldca[j]<<
4951 "densb0="<<densb0<<
4952 "densb1="<<densb1<<
4953 "densa0="<<densa0<<
4954 "densa1="<<densa1<<
4955 "sigmae="<<sigmae<<
b9671574 4956 "\n";}
81e97e0d 4957 }
4958 }
4959 }
4960 Float_t *quality = new Float_t[ncandidates];
4961 Int_t *indexes = new Int_t[ncandidates];
4962 Int_t naccepted =0;
4963 for (Int_t i=0;i<ncandidates;i++){
4964 quality[i] = 0;
d6a49f20 4965 AliESDv0 *v0 = (AliESDv0*)tpcv0s->At(i);
81e97e0d 4966 quality[i] = 1./(1.00001-v0->GetPointAngle()); //base point angle
4967 // quality[i] /= (0.5+v0->GetDist2());
4968 // quality[i] *= v0->GetChi2After(); //density factor
4969 Double_t minpulldca = TMath::Min(2.+pulldca[v0->GetIndex(0)],(2.+pulldca[v0->GetIndex(1)]) ); //pull
4970 Int_t index0 = v0->GetIndex(0);
4971 Int_t index1 = v0->GetIndex(1);
4972 AliTPCseed * track0 = (AliTPCseed*)array->At(index0);
4973 AliTPCseed * track1 = (AliTPCseed*)array->At(index1);
b9671574 4974 if (track0->TPCrPID(0)>0.3&&track1->TPCrPID(0)>0.3&&v0->GetAnglep()[2]<0.15) quality[i]+=1000000; // gamma conversion candidate
4975 if (track0->TPCrPID(4)>0.9||track1->TPCrPID(4)>0.9&&minpulldca>4) quality[i]*=10; // lambda candidate candidate
81e97e0d 4976 }
4977
4978 TMath::Sort(ncandidates,quality,indexes,kTRUE);
4979 //
4980 //
4981 for (Int_t i=0;i<ncandidates;i++){
d6a49f20 4982 AliESDv0 * v0 = (AliESDv0*)tpcv0s->At(indexes[i]);
81e97e0d 4983 if (!v0) continue;
4984 Int_t index0 = v0->GetIndex(0);
4985 Int_t index1 = v0->GetIndex(1);
4986 AliTPCseed * track0 = (AliTPCseed*)array->At(index0);
4987 AliTPCseed * track1 = (AliTPCseed*)array->At(index1);
4988 if (!track0||!track1) {
4989 printf("Bug\n");
4990 continue;
4991 }
4992 Bool_t accept =kTRUE; //default accept
4993 Int_t *v0indexes0 = track0->GetV0Indexes();
4994 Int_t *v0indexes1 = track1->GetV0Indexes();
4995 //
4996 Int_t order0 = (v0indexes0[0]!=0) ? 1:0;
4997 Int_t order1 = (v0indexes1[0]!=0) ? 1:0;
4998 if (v0indexes0[1]!=0) order0 =2;
4999 if (v0indexes1[1]!=0) order1 =2;
5000 //
5001 if (v0indexes0[2]!=0) {order0=3; accept=kFALSE;}
5002 if (v0indexes0[2]!=0) {order1=3; accept=kFALSE;}
5003 //
d6a49f20 5004 AliESDv0 * v02 = v0;
81e97e0d 5005 if (accept){
5006 v0->SetOrder(0,order0);
5007 v0->SetOrder(1,order1);
5008 v0->SetOrder(1,order0+order1);
d6a49f20 5009 v0->SetOnFlyStatus(kTRUE);
5010 Int_t index = esd->AddV0(v0);
5011 v02 = esd->GetV0(index);
81e97e0d 5012 v0indexes0[order0]=index;
5013 v0indexes1[order1]=index;
5014 naccepted++;
5015 }
5016 {
5017 Int_t eventNr = esd->GetEventNumber();
b9671574 5018 if (AliTPCReconstructor::StreamLevel()>0) {
5019 Int_t lab0=track0->GetLabel();
5020 Int_t lab1=track1->GetLabel();
34acb742 5021 cstream<<"V02"<<
81e97e0d 5022 "Event="<<eventNr<<
5023 "vertex.="<<v0<<
5024 "vertex2.="<<v02<<
5025 "Tr0.="<<track0<<
b9671574 5026 "lab0="<<lab0<<
81e97e0d 5027 "Tr1.="<<track1<<
b9671574 5028 "lab1="<<lab1<<
81e97e0d 5029 "dca0="<<dca[index0]<<
5030 "dca1="<<dca[index1]<<
5031 "order0="<<order0<<
5032 "order1="<<order1<<
5033 "accept="<<accept<<
5034 "quality="<<quality[i]<<
5035 "pulldca0="<<pulldca[index0]<<
5036 "pulldca1="<<pulldca[index1]<<
5037 "index="<<i<<
b9671574 5038 "\n";}
81e97e0d 5039 }
5040 }
5041
5042
5043 //
5044 //
5045 delete []quality;
5046 delete []indexes;
5047//
5048 delete [] isPrim;
5049 delete [] pulldca;
5050 delete [] pulldcaz;
5051 delete [] pulldcar;
5052 delete [] cdcar;
5053 delete [] sdcar;
5054 delete [] dca;
5055 //
5056 delete[] z0;
5057 delete[] alpha;
5058 delete[] sign;
5059 delete[] helixes;
5060 printf("TPC V0 finder : naccepted\t%d\tncandidates\t%d\tntracks\t%d\tnall\t%d\n",naccepted,ncandidates,ntracks,nall);
5061 timer.Print();
5062}
5063
6c94f330 5064Int_t AliTPCtrackerMI::RefitKink(AliTPCseed &mother, AliTPCseed &daughter, AliESDkink &knk)
eea478d3 5065{
5066 //
5067 // refit kink towards to the vertex
5068 //
5069 //
6c94f330 5070 AliKink &kink=(AliKink &)knk;
5071
eea478d3 5072 Int_t row0 = GetRowNumber(kink.GetR());
5073 FollowProlongation(mother,0);
5074 mother.Reset(kFALSE);
5075 //
5076 FollowProlongation(daughter,row0);
5077 daughter.Reset(kFALSE);
5078 FollowBackProlongation(daughter,158);
5079 daughter.Reset(kFALSE);
5080 Int_t first = TMath::Max(row0-20,30);
5081 Int_t last = TMath::Min(row0+20,140);
5082 //
5083 const Int_t kNdiv =5;
5084 AliTPCseed param0[kNdiv]; // parameters along the track
5085 AliTPCseed param1[kNdiv]; // parameters along the track
6c94f330 5086 AliKink kinks[kNdiv]; // corresponding kink parameters
eea478d3 5087 //
5088 Int_t rows[kNdiv];
5089 for (Int_t irow=0; irow<kNdiv;irow++){
5090 rows[irow] = first +((last-first)*irow)/(kNdiv-1);
5091 }
5092 // store parameters along the track
5093 //
5094 for (Int_t irow=0;irow<kNdiv;irow++){
5095 FollowBackProlongation(mother, rows[irow]);
5096 FollowProlongation(daughter,rows[kNdiv-1-irow]);
5097 new(&param0[irow]) AliTPCseed(mother);
5098 new(&param1[kNdiv-1-irow]) AliTPCseed(daughter);
5099 }
5100 //
5101 // define kinks
5102 for (Int_t irow=0; irow<kNdiv-1;irow++){
b9671574 5103 if (param0[irow].GetNumberOfClusters()<kNdiv||param1[irow].GetNumberOfClusters()<kNdiv) continue;
eea478d3 5104 kinks[irow].SetMother(param0[irow]);
5105 kinks[irow].SetDaughter(param1[irow]);
5106 kinks[irow].Update();
5107 }
5108 //
5109 // choose kink with best "quality"
5110 Int_t index =-1;
5111 Double_t mindist = 10000;
5112 for (Int_t irow=0;irow<kNdiv;irow++){
b9671574 5113 if (param0[irow].GetNumberOfClusters()<20||param1[irow].GetNumberOfClusters()<20) continue;
eea478d3 5114 if (TMath::Abs(kinks[irow].GetR())>240.) continue;
5115 if (TMath::Abs(kinks[irow].GetR())<100.) continue;
5116 //
6c94f330 5117 Float_t normdist = TMath::Abs(param0[irow].GetX()-kinks[irow].GetR())*(0.1+kink.GetDistance());
b9671574 5118 normdist/= (param0[irow].GetNumberOfClusters()+param1[irow].GetNumberOfClusters()+40.);
eea478d3 5119 if (normdist < mindist){
5120 mindist = normdist;
5121 index = irow;
5122 }
5123 }
5124 //
5125 if (index==-1) return 0;
5126 //
5127 //
5128 param0[index].Reset(kTRUE);
5129 FollowProlongation(param0[index],0);
5130 //
5131 new (&mother) AliTPCseed(param0[index]);
5132 new (&daughter) AliTPCseed(param1[index]); // daughter in vertex
5133 //
5134 kink.SetMother(mother);
5135 kink.SetDaughter(daughter);
5136 kink.Update();
5137 kink.SetTPCRow0(GetRowNumber(kink.GetR()));
b9671574 5138 kink.SetTPCncls(param0[index].GetNumberOfClusters(),0);
5139 kink.SetTPCncls(param1[index].GetNumberOfClusters(),1);
eea478d3 5140 kink.SetLabel(CookLabel(&mother,0.4, 0,kink.GetTPCRow0()),0);
5141 kink.SetLabel(CookLabel(&daughter,0.4, kink.GetTPCRow0(),160),1);
5142 mother.SetLabel(kink.GetLabel(0));
5143 daughter.SetLabel(kink.GetLabel(1));
5144
5145 return 1;
5146}
51ad6848 5147
5148
5149void AliTPCtrackerMI::UpdateKinkQualityM(AliTPCseed * seed){
5150 //
5151 // update Kink quality information for mother after back propagation
5152 //
5153 if (seed->GetKinkIndex(0)>=0) return;
5154 for (Int_t ikink=0;ikink<3;ikink++){
5155 Int_t index = seed->GetKinkIndex(ikink);
5156 if (index>=0) break;
5157 index = TMath::Abs(index)-1;
5158 AliESDkink * kink = fEvent->GetKink(index);
eea478d3 5159 //kink->fTPCdensity2[0][0]=-1;
5160 //kink->fTPCdensity2[0][1]=-1;
5161 kink->SetTPCDensity2(-1,0,0);
5162 kink->SetTPCDensity2(1,0,1);
51ad6848 5163 //
eea478d3 5164 Int_t row0 = kink->GetTPCRow0() - 2 - Int_t( 0.5/ (0.05+kink->GetAngle(2)));
51ad6848 5165 if (row0<15) row0=15;
5166 //
eea478d3 5167 Int_t row1 = kink->GetTPCRow0() + 2 + Int_t( 0.5/ (0.05+kink->GetAngle(2)));
51ad6848 5168 if (row1>145) row1=145;
5169 //
5170 Int_t found,foundable,shared;
5171 seed->GetClusterStatistic(0,row0, found, foundable,shared,kFALSE);
eea478d3 5172 if (foundable>5) kink->SetTPCDensity2(Float_t(found)/Float_t(foundable),0,0);
51ad6848 5173 seed->GetClusterStatistic(row1,155, found, foundable,shared,kFALSE);
eea478d3 5174 if (foundable>5) kink->SetTPCDensity2(Float_t(found)/Float_t(foundable),0,1);
51ad6848 5175 }
5176
5177}
5178
eea478d3 5179void AliTPCtrackerMI::UpdateKinkQualityD(AliTPCseed * seed){
91162307 5180 //
eea478d3 5181 // update Kink quality information for daughter after refit
91162307 5182 //
eea478d3 5183 if (seed->GetKinkIndex(0)<=0) return;
5184 for (Int_t ikink=0;ikink<3;ikink++){
5185 Int_t index = seed->GetKinkIndex(ikink);
5186 if (index<=0) break;
5187 index = TMath::Abs(index)-1;
5188 AliESDkink * kink = fEvent->GetKink(index);
5189 kink->SetTPCDensity2(-1,1,0);
5190 kink->SetTPCDensity2(-1,1,1);
91162307 5191 //
eea478d3 5192 Int_t row0 = kink->GetTPCRow0() -2 - Int_t( 0.5/ (0.05+kink->GetAngle(2)));
5193 if (row0<15) row0=15;
5194 //
5195 Int_t row1 = kink->GetTPCRow0() +2 + Int_t( 0.5/ (0.05+kink->GetAngle(2)));
5196 if (row1>145) row1=145;
5197 //
5198 Int_t found,foundable,shared;
5199 seed->GetClusterStatistic(0,row0, found, foundable,shared,kFALSE);
5200 if (foundable>5) kink->SetTPCDensity2(Float_t(found)/Float_t(foundable),1,0);
5201 seed->GetClusterStatistic(row1,155, found, foundable,shared,kFALSE);
5202 if (foundable>5) kink->SetTPCDensity2(Float_t(found)/Float_t(foundable),1,1);
91162307 5203 }
eea478d3 5204
5205}
5206
5207
6c94f330 5208Int_t AliTPCtrackerMI::CheckKinkPoint(AliTPCseed*seed,AliTPCseed &mother, AliTPCseed &daughter, AliESDkink &knk)
eea478d3 5209{
91162307 5210 //
eea478d3 5211 // check kink point for given track
5212 // if return value=0 kink point not found
5213 // otherwise seed0 correspond to mother particle
5214 // seed1 correspond to daughter particle
5215 // kink parameter of kink point
6c94f330 5216 AliKink &kink=(AliKink &)knk;
91162307 5217
b9671574 5218 Int_t middlerow = (seed->GetFirstPoint()+seed->GetLastPoint())/2;
5219 Int_t first = seed->GetFirstPoint();
5220 Int_t last = seed->GetLastPoint();
eea478d3 5221 if (last-first<20) return 0; // shortest length - 2*30 = 60 pad-rows
91162307 5222
eea478d3 5223
5224 AliTPCseed *seed1 = ReSeed(seed,middlerow+20, kTRUE); //middle of chamber
5225 if (!seed1) return 0;
b9671574 5226 FollowProlongation(*seed1,seed->GetLastPoint()-20);
eea478d3 5227 seed1->Reset(kTRUE);
5228 FollowProlongation(*seed1,158);
5229 seed1->Reset(kTRUE);
b9671574 5230 last = seed1->GetLastPoint();
eea478d3 5231 //
5232 AliTPCseed *seed0 = new AliTPCseed(*seed);
5233 seed0->Reset(kFALSE);
5234 seed0->Reset();
5235 //
5236 AliTPCseed param0[20]; // parameters along the track
5237 AliTPCseed param1[20]; // parameters along the track
6c94f330 5238 AliKink kinks[20]; // corresponding kink parameters
eea478d3 5239 Int_t rows[20];
5240 for (Int_t irow=0; irow<20;irow++){
5241 rows[irow] = first +((last-first)*irow)/19;
5242 }
5243 // store parameters along the track
5244 //
5245 for (Int_t irow=0;irow<20;irow++){
5246 FollowBackProlongation(*seed0, rows[irow]);
5247 FollowProlongation(*seed1,rows[19-irow]);
5248 new(&param0[irow]) AliTPCseed(*seed0);
5249 new(&param1[19-irow]) AliTPCseed(*seed1);
5250 }
5251 //
5252 // define kinks
5253 for (Int_t irow=0; irow<19;irow++){
5254 kinks[irow].SetMother(param0[irow]);
5255 kinks[irow].SetDaughter(param1[irow]);
5256 kinks[irow].Update();
5257 }
5258 //
5259 // choose kink with biggest change of angle
5260 Int_t index =-1;
5261 Double_t maxchange= 0;
5262 for (Int_t irow=1;irow<19;irow++){
5263 if (TMath::Abs(kinks[irow].GetR())>240.) continue;
5264 if (TMath::Abs(kinks[irow].GetR())<110.) continue;
6c94f330 5265 Float_t quality = TMath::Abs(kinks[irow].GetAngle(2))/(3.+TMath::Abs(kinks[irow].GetR()-param0[irow].GetX()));
eea478d3 5266 if ( quality > maxchange){
5267 maxchange = quality;
5268 index = irow;
5269 //
91162307 5270 }
5271 }
eea478d3 5272 delete seed0;
5273 delete seed1;
5274 if (index<0) return 0;
5275 //
5276 Int_t row0 = GetRowNumber(kinks[index].GetR()); //row 0 estimate
5277 seed0 = new AliTPCseed(param0[index]);
5278 seed1 = new AliTPCseed(param1[index]);
5279 seed0->Reset(kFALSE);
5280 seed1->Reset(kFALSE);
6c94f330 5281 seed0->ResetCovariance(10.);
5282 seed1->ResetCovariance(10.);
eea478d3 5283 FollowProlongation(*seed0,0);
5284 FollowBackProlongation(*seed1,158);
5285 new (&mother) AliTPCseed(*seed0); // backup mother at position 0
5286 seed0->Reset(kFALSE);
5287 seed1->Reset(kFALSE);
6c94f330 5288 seed0->ResetCovariance(10.);
5289 seed1->ResetCovariance(10.);
eea478d3 5290 //
5291 first = TMath::Max(row0-20,0);
5292 last = TMath::Min(row0+20,158);
5293 //
5294 for (Int_t irow=0; irow<20;irow++){
5295 rows[irow] = first +((last-first)*irow)/19;
5296 }
5297 // store parameters along the track
5298 //
5299 for (Int_t irow=0;irow<20;irow++){
5300 FollowBackProlongation(*seed0, rows[irow]);
5301 FollowProlongation(*seed1,rows[19-irow]);
5302 new(&param0[irow]) AliTPCseed(*seed0);
5303 new(&param1[19-irow]) AliTPCseed(*seed1);
5304 }
5305 //
5306 // define kinks
5307 for (Int_t irow=0; irow<19;irow++){
5308 kinks[irow].SetMother(param0[irow]);
5309 kinks[irow].SetDaughter(param1[irow]);
5310 // param0[irow].Dump();
5311 //param1[irow].Dump();
5312 kinks[irow].Update();
5313 }
5314 //
5315 // choose kink with biggest change of angle
5316 index =-1;
5317 maxchange= 0;
5318 for (Int_t irow=0;irow<20;irow++){
5319 if (TMath::Abs(kinks[irow].GetR())>250.) continue;
5320 if (TMath::Abs(kinks[irow].GetR())<90.) continue;
6c94f330 5321 Float_t quality = TMath::Abs(kinks[irow].GetAngle(2))/(3.+TMath::Abs(kinks[irow].GetR()-param0[irow].GetX()));
eea478d3 5322 if ( quality > maxchange){
5323 maxchange = quality;
5324 index = irow;
5325 //
91162307 5326 }
5327 }
5328 //
5329 //
b9671574 5330 if (index==-1 || param0[index].GetNumberOfClusters()+param1[index].GetNumberOfClusters()<100){
eea478d3 5331 delete seed0;
5332 delete seed1;
5333 return 0;
1627d1c4 5334 }
eea478d3 5335 // Float_t anglesigma = TMath::Sqrt(param0[index].fC22+param0[index].fC33+param1[index].fC22+param1[index].fC33);
1627d1c4 5336
eea478d3 5337 kink.SetMother(param0[index]);
5338 kink.SetDaughter(param1[index]);
5339 kink.Update();
5340 row0 = GetRowNumber(kink.GetR());
5341 kink.SetTPCRow0(row0);
5342 kink.SetLabel(CookLabel(seed0,0.5,0,row0),0);
5343 kink.SetLabel(CookLabel(seed1,0.5,row0,158),1);
5344 kink.SetIndex(-10,0);
b9671574 5345 kink.SetIndex(int(param0[index].GetNumberOfClusters()+param1[index].GetNumberOfClusters()),1);
5346 kink.SetTPCncls(param0[index].GetNumberOfClusters(),0);
5347 kink.SetTPCncls(param1[index].GetNumberOfClusters(),1);
eea478d3 5348 //
5349 //
5350 // new (&mother) AliTPCseed(param0[index]);
5351 new (&daughter) AliTPCseed(param1[index]);
5352 daughter.SetLabel(kink.GetLabel(1));
5353 param0[index].Reset(kTRUE);
5354 FollowProlongation(param0[index],0);
5355 new (&mother) AliTPCseed(param0[index]);
5356 mother.SetLabel(kink.GetLabel(0));
5357 delete seed0;
5358 delete seed1;
5359 //
5360 return 1;
1627d1c4 5361}
5362
5363
5364
5365
91162307 5366AliTPCseed* AliTPCtrackerMI::ReSeed(AliTPCseed *t)
5367{
5368 //
5369 // reseed - refit - track
5370 //
5371 Int_t first = 0;
5372 // Int_t last = fSectors->GetNRows()-1;
5373 //
5374 if (fSectors == fOuterSec){
b9671574 5375 first = TMath::Max(first, t->GetFirstPoint()-fInnerSec->GetNRows());
91162307 5376 //last =
5377 }
5378 else
b9671574 5379 first = t->GetFirstPoint();
91162307 5380 //
5381 AliTPCseed * seed = MakeSeed(t,0.1,0.5,0.9);
5382 FollowBackProlongation(*t,fSectors->GetNRows()-1);
5383 t->Reset(kFALSE);
5384 FollowProlongation(*t,first);
5385 return seed;
5386}
5387
5388
5389
5390
5391
5392
5393
1c53abe2 5394//_____________________________________________________________________________
5395Int_t AliTPCtrackerMI::ReadSeeds(const TFile *inp) {
5396 //-----------------------------------------------------------------
5397 // This function reades track seeds.
5398 //-----------------------------------------------------------------
5399 TDirectory *savedir=gDirectory;
5400
5401 TFile *in=(TFile*)inp;
5402 if (!in->IsOpen()) {
5403 cerr<<"AliTPCtrackerMI::ReadSeeds(): input file is not open !\n";
5404 return 1;
5405 }
5406
5407 in->cd();
5408 TTree *seedTree=(TTree*)in->Get("Seeds");
5409 if (!seedTree) {
5410 cerr<<"AliTPCtrackerMI::ReadSeeds(): ";
5411 cerr<<"can't get a tree with track seeds !\n";
5412 return 2;
5413 }
5414 AliTPCtrack *seed=new AliTPCtrack;
5415 seedTree->SetBranchAddress("tracks",&seed);
5416
5417 if (fSeeds==0) fSeeds=new TObjArray(15000);
5418
5419 Int_t n=(Int_t)seedTree->GetEntries();
5420 for (Int_t i=0; i<n; i++) {
5421 seedTree->GetEvent(i);
bbc6cd2c 5422 fSeeds->AddLast(new AliTPCseed(*seed/*,seed->GetAlpha()*/));
1c53abe2 5423 }
5424
5425 delete seed;
5426 delete seedTree;
5427 savedir->cd();
5428 return 0;
5429}
5430
d26d9159 5431Int_t AliTPCtrackerMI::Clusters2Tracks (AliESD *esd)
5432{
5433 //
d9b8978b 5434 if (fSeeds) DeleteSeeds();
d26d9159 5435 fEvent = esd;
5436 Clusters2Tracks();
5437 if (!fSeeds) return 1;
5438 FillESD(fSeeds);
5439 return 0;
5440 //
5441}
5442
5443
1c53abe2 5444//_____________________________________________________________________________
f8aae377 5445Int_t AliTPCtrackerMI::Clusters2Tracks() {
1c53abe2 5446 //-----------------------------------------------------------------
5447 // This is a track finder.
5448 //-----------------------------------------------------------------
91162307 5449 TDirectory *savedir=gDirectory;
1c53abe2 5450 TStopwatch timer;
d26d9159 5451
91162307 5452 fIteration = 0;
5453 fSeeds = Tracking();
1c53abe2 5454
6bdc18d6 5455 if (fDebug>0){
5456 Info("Clusters2Tracks","Time for tracking: \t");timer.Print();timer.Start();
5457 }
91162307 5458 //activate again some tracks
5459 for (Int_t i=0; i<fSeeds->GetEntriesFast(); i++) {
5460 AliTPCseed *pt=(AliTPCseed*)fSeeds->UncheckedAt(i), &t=*pt;
5461 if (!pt) continue;
5462 Int_t nc=t.GetNumberOfClusters();
5463 if (nc<20) {
5464 delete fSeeds->RemoveAt(i);
5465 continue;
eea478d3 5466 }
5467 CookLabel(pt,0.1);
b9671574 5468 if (pt->GetRemoval()==10) {
91162307 5469 if (pt->GetDensityFirst(20)>0.8 || pt->GetDensityFirst(30)>0.8 || pt->GetDensityFirst(40)>0.7)
5470 pt->Desactivate(10); // make track again active
5471 else{
5472 pt->Desactivate(20);
5473 delete fSeeds->RemoveAt(i);
5474 }
5475 }
5476 }
51ad6848 5477 //
5478 RemoveUsed2(fSeeds,0.85,0.85,0);
a3232aae 5479 if (AliTPCReconstructor::GetRecoParam()->GetDoKinks()) FindKinks(fSeeds,fEvent);
81e97e0d 5480 RemoveUsed2(fSeeds,0.5,0.4,20);
5481 // //
5482// // refit short tracks
5483// //
5484 Int_t nseed=fSeeds->GetEntriesFast();
5485// for (Int_t i=0; i<nseed; i++) {
5486// AliTPCseed *pt=(AliTPCseed*)fSeeds->UncheckedAt(i), &t=*pt;
5487// if (!pt) continue;
5488// Int_t nc=t.GetNumberOfClusters();
5489// if (nc<15) {
5490// delete fSeeds->RemoveAt(i);
5491// continue;
5492// }
5493// if (pt->GetKinkIndexes()[0]!=0) continue; // ignore kink candidates
5494// if (nc>100) continue; // hopefully, enough for ITS
5495// AliTPCseed *seed2 = new AliTPCseed(*pt);
5496// //seed2->Reset(kFALSE);
5497// //pt->ResetCovariance();
5498// seed2->Modify(1);
5499// FollowBackProlongation(*seed2,158);
5500// //seed2->Reset(kFALSE);
5501// seed2->Modify(10);
5502// FollowProlongation(*seed2,0);
5503// TTreeSRedirector &cstream = *fDebugStreamer;
5504// cstream<<"Crefit"<<
5505// "Tr0.="<<pt<<
5506// "Tr1.="<<seed2<<
5507// "\n";
5508// if (seed2->fN>pt->fN){
5509// delete fSeeds->RemoveAt(i);
5510// fSeeds->AddAt(seed2,i);
5511// }else{
5512// delete seed2;
5513// }
5514// }
5515// RemoveUsed2(fSeeds,0.6,0.6,50);
5516
5517// FindV0s(fSeeds,fEvent);
51ad6848 5518 //RemoveDouble(fSeeds,0.2,0.6,11);
c9427e08 5519
1c53abe2 5520 //
91162307 5521 Int_t found = 0;
5522 for (Int_t i=0; i<nseed; i++) {
5523 AliTPCseed *pt=(AliTPCseed*)fSeeds->UncheckedAt(i), &t=*pt;
5524 if (!pt) continue;
5525 Int_t nc=t.GetNumberOfClusters();
5526 if (nc<15) {
5527 delete fSeeds->RemoveAt(i);
5528 continue;
5529 }
5530 CookLabel(pt,0.1); //For comparison only
5531 //if ((pt->IsActive() || (pt->fRemoval==10) )&& nc>50 &&pt->GetNumberOfClusters()>0.4*pt->fNFoundable){
b9671574 5532 if ((pt->IsActive() || (pt->GetRemoval()==10) )){
d9b8978b 5533 found++;
5534 if (fDebug>0) cerr<<found<<'\r';
b9671574 5535 pt->SetLab2(i);
91162307 5536 }
5537 else
5538 delete fSeeds->RemoveAt(i);
91162307 5539 }
5540
5541
5542 //RemoveOverlap(fSeeds,0.99,7,kTRUE);
5543 SignShared(fSeeds);
5544 //RemoveUsed(fSeeds,0.9,0.9,6);
1c53abe2 5545 //
91162307 5546 nseed=fSeeds->GetEntriesFast();
5547 found = 0;
5548 for (Int_t i=0; i<nseed; i++) {
5549 AliTPCseed *pt=(AliTPCseed*)fSeeds->UncheckedAt(i), &t=*pt;
5550 if (!pt) continue;
5551 Int_t nc=t.GetNumberOfClusters();
5552 if (nc<15) {
5553 delete fSeeds->RemoveAt(i);
5554 continue;
5555 }
5556 t.SetUniqueID(i);
5557 t.CookdEdx(0.02,0.6);
5558 // CheckKinkPoint(&t,0.05);
5559 //if ((pt->IsActive() || (pt->fRemoval==10) )&& nc>50 &&pt->GetNumberOfClusters()>0.4*pt->fNFoundable){
b9671574 5560 if ((pt->IsActive() || (pt->GetRemoval()==10) )){
6bdc18d6 5561 found++;
5562 if (fDebug>0){
5563 cerr<<found<<'\r';
5564 }
b9671574 5565 pt->SetLab2(i);
91162307 5566 }
5567 else
5568 delete fSeeds->RemoveAt(i);
d26d9159 5569 //AliTPCseed * seed1 = ReSeed(pt,0.05,0.5,1);
5570 //if (seed1){
5571 // FollowProlongation(*seed1,0);
5572 // Int_t n = seed1->GetNumberOfClusters();
5573 // printf("fP4\t%f\t%f\n",seed1->GetC(),pt->GetC());
5574 // printf("fN\t%d\t%d\n", seed1->GetNumberOfClusters(),pt->GetNumberOfClusters());
5575 //
5576 //}
5577 //AliTPCseed * seed2 = ReSeed(pt,0.95,0.5,0.05);
5578
91162307 5579 }
5580
5581 SortTracks(fSeeds, 1);
1c53abe2 5582
982aff31 5583 /*
91162307 5584 fIteration = 1;
982aff31 5585 PrepareForBackProlongation(fSeeds,5.);
91162307 5586 PropagateBack(fSeeds);
5587 printf("Time for back propagation: \t");timer.Print();timer.Start();
5588
5589 fIteration = 2;
1c53abe2 5590
982aff31 5591 PrepareForProlongation(fSeeds,5.);
5592 PropagateForward2(fSeeds);
d26d9159 5593
91162307 5594 printf("Time for FORWARD propagation: \t");timer.Print();timer.Start();
5595 // RemoveUsed(fSeeds,0.7,0.7,6);
5596 //RemoveOverlap(fSeeds,0.9,7,kTRUE);
d26d9159 5597
1c53abe2 5598 nseed=fSeeds->GetEntriesFast();
91162307 5599 found = 0;
5600 for (Int_t i=0; i<nseed; i++) {
1c53abe2 5601 AliTPCseed *pt=(AliTPCseed*)fSeeds->UncheckedAt(i), &t=*pt;
5602 if (!pt) continue;
5603 Int_t nc=t.GetNumberOfClusters();
91162307 5604 if (nc<15) {
5605 delete fSeeds->RemoveAt(i);
5606 continue;
5607 }
1c53abe2 5608 t.CookdEdx(0.02,0.6);
91162307 5609 // CookLabel(pt,0.1); //For comparison only
5610 //if ((pt->IsActive() || (pt->fRemoval==10) )&& nc>50 &&pt->GetNumberOfClusters()>0.4*pt->fNFoundable){
5611 if ((pt->IsActive() || (pt->fRemoval==10) )){
5612 cerr<<found++<<'\r';
5613 }
5614 else
5615 delete fSeeds->RemoveAt(i);
5616 pt->fLab2 = i;
1c53abe2 5617 }
91162307 5618 */
5619
c9427e08 5620 // fNTracks = found;
6bdc18d6 5621 if (fDebug>0){
5622 Info("Clusters2Tracks","Time for overlap removal, track writing and dedx cooking: \t"); timer.Print();timer.Start();
5623 }
91162307 5624 //
6bdc18d6 5625 // cerr<<"Number of found tracks : "<<"\t"<<found<<endl;
5626 Info("Clusters2Tracks","Number of found tracks %d",found);
91162307 5627 savedir->cd();
91162307 5628 // UnloadClusters();
d26d9159 5629 //
1c53abe2 5630 return 0;
5631}
5632
91162307 5633void AliTPCtrackerMI::Tracking(TObjArray * arr)
5634{
5635 //
5636 // tracking of the seeds
5637 //
5638
5639 fSectors = fOuterSec;
5640 ParallelTracking(arr,150,63);
5641 fSectors = fOuterSec;
5642 ParallelTracking(arr,63,0);
5643}
5644
5645TObjArray * AliTPCtrackerMI::Tracking(Int_t seedtype, Int_t i1, Int_t i2, Float_t cuts[4], Float_t dy, Int_t dsec)
5646{
5647 //
5648 //
5649 //tracking routine
5650 TObjArray * arr = new TObjArray;
5651 //
5652 fSectors = fOuterSec;
5653 TStopwatch timer;
5654 timer.Start();
5655 for (Int_t sec=0;sec<fkNOS;sec++){
5656 if (seedtype==3) MakeSeeds3(arr,sec,i1,i2,cuts,dy, dsec);
5657 if (seedtype==4) MakeSeeds5(arr,sec,i1,i2,cuts,dy);
5658 if (seedtype==2) MakeSeeds2(arr,sec,i1,i2,cuts,dy);
5659 }
5660 if (fDebug>0){
6bdc18d6 5661 Info("Tracking","\nSeeding - %d\t%d\t%d\t%d\n",seedtype,i1,i2,arr->GetEntriesFast());
91162307 5662 timer.Print();
5663 timer.Start();
5664 }
5665 Tracking(arr);
5666 if (fDebug>0){
5667 timer.Print();
5668 }
5669
5670 return arr;
5671}
5672
5673TObjArray * AliTPCtrackerMI::Tracking()
5674{
5675 //
5676 //
a3232aae 5677 if (AliTPCReconstructor::GetRecoParam()->GetSpecialSeeding()) return TrackingSpecial();
91162307 5678 TStopwatch timer;
5679 timer.Start();
5680 Int_t nup=fOuterSec->GetNRows()+fInnerSec->GetNRows();
5681
5682 TObjArray * seeds = new TObjArray;
5683 TObjArray * arr=0;
5684
5685 Int_t gap =20;
5686 Float_t cuts[4];
5687 cuts[0] = 0.002;
5688 cuts[1] = 1.5;
5689 cuts[2] = 3.;
5690 cuts[3] = 3.;
5691 Float_t fnumber = 3.0;
5692 Float_t fdensity = 3.0;
5693
5694 //
5695 //find primaries
5696 cuts[0]=0.0066;
5697 for (Int_t delta = 0; delta<18; delta+=6){
5698 //
5699 cuts[0]=0.0070;
5700 cuts[1] = 1.5;
5701 arr = Tracking(3,nup-1-delta,nup-1-delta-gap,cuts,-1,1);
5702 SumTracks(seeds,arr);
5703 SignClusters(seeds,fnumber,fdensity);
5704 //
5705 for (Int_t i=2;i<6;i+=2){
5706 // seed high pt tracks
5707 cuts[0]=0.0022;
5708 cuts[1]=0.3;
5709 arr = Tracking(3,nup-i-delta,nup-i-delta-gap,cuts,-1,0);
5710 SumTracks(seeds,arr);
5711 SignClusters(seeds,fnumber,fdensity);
5712 }
5713 }
5714 fnumber = 4;
5715 fdensity = 4.;
5716 // RemoveUsed(seeds,0.9,0.9,1);
5717 // UnsignClusters();
5718 // SignClusters(seeds,fnumber,fdensity);
5719
5720 //find primaries
5721 cuts[0]=0.0077;
5722 for (Int_t delta = 20; delta<120; delta+=10){
5723 //
5724 // seed high pt tracks
5725 cuts[0]=0.0060;
5726 cuts[1]=0.3;
5727 cuts[2]=6.;
5728 arr = Tracking(3,nup-delta,nup-delta-gap,cuts,-1);
5729 SumTracks(seeds,arr);
5730 SignClusters(seeds,fnumber,fdensity);
5731
5732 cuts[0]=0.003;
5733 cuts[1]=0.3;
5734 cuts[2]=6.;
5735 arr = Tracking(3,nup-delta-5,nup-delta-5-gap,cuts,-1);
5736 SumTracks(seeds,arr);
5737 SignClusters(seeds,fnumber,fdensity);
5738 }
5739
5740 cuts[0] = 0.01;
5741 cuts[1] = 2.0;
5742 cuts[2] = 3.;
5743 cuts[3] = 2.0;
5744 fnumber = 2.;
5745 fdensity = 2.;
5746
5747 if (fDebug>0){
6bdc18d6 5748 Info("Tracking()","\n\nPrimary seeding\t%d\n\n",seeds->GetEntriesFast());
91162307 5749 timer.Print();
5750 timer.Start();
5751 }
5752 // RemoveUsed(seeds,0.75,0.75,1);
5753 //UnsignClusters();
5754 //SignClusters(seeds,fnumber,fdensity);
5755
5756 // find secondaries
5757
5758 cuts[0] = 0.3;
5759 cuts[1] = 1.5;
5760 cuts[2] = 3.;
5761 cuts[3] = 1.5;
5762
5763 arr = Tracking(4,nup-1,nup-1-gap,cuts,-1);
5764 SumTracks(seeds,arr);
5765 SignClusters(seeds,fnumber,fdensity);
5766 //
5767 arr = Tracking(4,nup-2,nup-2-gap,cuts,-1);
5768 SumTracks(seeds,arr);
5769 SignClusters(seeds,fnumber,fdensity);
5770 //
5771 arr = Tracking(4,nup-3,nup-3-gap,cuts,-1);
5772 SumTracks(seeds,arr);
5773 SignClusters(seeds,fnumber,fdensity);
5774 //
5775
5776
5777 for (Int_t delta = 3; delta<30; delta+=5){
5778 //
5779 cuts[0] = 0.3;
5780 cuts[1] = 1.5;
5781 cuts[2] = 3.;
5782 cuts[3] = 1.5;
5783 arr = Tracking(4,nup-1-delta,nup-1-delta-gap,cuts,-1);
5784 SumTracks(seeds,arr);
5785 SignClusters(seeds,fnumber,fdensity);
5786 //
5787 arr = Tracking(4,nup-3-delta,nup-5-delta-gap,cuts,4);
5788 SumTracks(seeds,arr);
5789 SignClusters(seeds,fnumber,fdensity);
5790 //
5791 }
5792 fnumber = 1;
5793 fdensity = 1;
5794 //
5795 // change cuts
5796 fnumber = 2.;
5797 fdensity = 2.;
5798 cuts[0]=0.0080;
5799
5800 // find secondaries
2bd61959 5801 for (Int_t delta = 30; delta<90; delta+=10){
91162307 5802 //
5803 cuts[0] = 0.3;
2bd61959 5804 cuts[1] = 3.5;
91162307 5805 cuts[2] = 3.;
2bd61959 5806 cuts[3] = 3.5;
91162307 5807 arr = Tracking(4,nup-1-delta,nup-1-delta-gap,cuts,-1);
5808 SumTracks(seeds,arr);
5809 SignClusters(seeds,fnumber,fdensity);
5810 //
5811 arr = Tracking(4,nup-5-delta,nup-5-delta-gap,cuts,5 );
5812 SumTracks(seeds,arr);
5813 SignClusters(seeds,fnumber,fdensity);
5814 }
5815
5816 if (fDebug>0){
6bdc18d6 5817 Info("Tracking()","\n\nSecondary seeding\t%d\n\n",seeds->GetEntriesFast());
91162307 5818 timer.Print();
5819 timer.Start();
5820 }
5821
5822 return seeds;
5823 //
5824
5825}
5826
5827
a3232aae 5828TObjArray * AliTPCtrackerMI::TrackingSpecial()
5829{
5830 //
5831 // seeding adjusted for laser and cosmic tests - short tracks with big inclination angle
5832 // no primary vertex seeding tried
5833 //
5834 TStopwatch timer;
5835 timer.Start();
5836 Int_t nup=fOuterSec->GetNRows()+fInnerSec->GetNRows();
5837
5838 TObjArray * seeds = new TObjArray;
5839 TObjArray * arr=0;
5840
5841 Int_t gap = 15;
5842 Float_t cuts[4];
5843 Float_t fnumber = 3.0;
5844 Float_t fdensity = 3.0;
5845
5846 // find secondaries
5847 cuts[0] = AliTPCReconstructor::GetRecoParam()->GetMaxC(); // max curvature
5848 cuts[1] = 3.5; // max tan(phi) angle for seeding
5849 cuts[2] = 3.; // not used (cut on z primary vertex)
5850 cuts[3] = 3.5; // max tan(theta) angle for seeding
5851
5852 for (Int_t delta = 0; nup-delta-gap-1>0; delta+=3){
5853 //
5854 arr = Tracking(4,nup-1-delta,nup-1-delta-gap,cuts,-1);
5855 SumTracks(seeds,arr);
5856 SignClusters(seeds,fnumber,fdensity);
5857 }
5858
5859 if (fDebug>0){
5860 Info("Tracking()","\n\nSecondary seeding\t%d\n\n",seeds->GetEntriesFast());
5861 timer.Print();
5862 timer.Start();
5863 }
5864
5865 return seeds;
5866 //
5867
5868}
5869
5870
47966a6d 5871void AliTPCtrackerMI::SumTracks(TObjArray *arr1,TObjArray *arr2) const
91162307 5872{
5873 //
5874 //sum tracks to common container
5875 //remove suspicious tracks
5876 Int_t nseed = arr2->GetEntriesFast();
5877 for (Int_t i=0;i<nseed;i++){
5878 AliTPCseed *pt=(AliTPCseed*)arr2->UncheckedAt(i);
5879 if (pt){
a3232aae 5880 //
5881 // remove tracks with too big curvature
5882 //
5883 if (TMath::Abs(pt->GetC())>AliTPCReconstructor::GetRecoParam()->GetMaxC()){
5884 delete arr2->RemoveAt(i);
5885 continue;
5886 }
ca142b1f 5887 // REMOVE VERY SHORT TRACKS
5888 if (pt->GetNumberOfClusters()<20){
5889 delete arr2->RemoveAt(i);
5890 continue;
5891 }// patch 28 fev06
91162307 5892 // NORMAL ACTIVE TRACK
5893 if (pt->IsActive()){
5894 arr1->AddLast(arr2->RemoveAt(i));
5895 continue;
5896 }
5897 //remove not usable tracks
b9671574 5898 if (pt->GetRemoval()!=10){
91162307 5899 delete arr2->RemoveAt(i);
5900 continue;
5901 }
ca142b1f 5902
91162307 5903 // ENABLE ONLY ENOUGH GOOD STOPPED TRACKS
5904 if (pt->GetDensityFirst(20)>0.8 || pt->GetDensityFirst(30)>0.8 || pt->GetDensityFirst(40)>0.7)
5905 arr1->AddLast(arr2->RemoveAt(i));
5906 else{
5907 delete arr2->RemoveAt(i);
5908 }
5909 }
5910 }
5911 delete arr2;
5912}
5913
5914
1c53abe2 5915
91162307 5916void AliTPCtrackerMI::ParallelTracking(TObjArray * arr, Int_t rfirst, Int_t rlast)
1c53abe2 5917{
5918 //
5919 // try to track in parralel
5920
91162307 5921 Int_t nseed=arr->GetEntriesFast();
1c53abe2 5922 //prepare seeds for tracking
5923 for (Int_t i=0; i<nseed; i++) {
91162307 5924 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i), &t=*pt;
1c53abe2 5925 if (!pt) continue;
5926 if (!t.IsActive()) continue;
5927 // follow prolongation to the first layer
b9671574 5928 if ( (fSectors ==fInnerSec) || (t.GetFirstPoint()-fParam->GetNRowLow()>rfirst+1) )
c9427e08 5929 FollowProlongation(t, rfirst+1);
1c53abe2 5930 }
5931
5932
5933 //
982aff31 5934 for (Int_t nr=rfirst; nr>=rlast; nr--){
5935 if (nr<fInnerSec->GetNRows())
5936 fSectors = fInnerSec;
5937 else
5938 fSectors = fOuterSec;
1c53abe2 5939 // make indexes with the cluster tracks for given
1c53abe2 5940
5941 // find nearest cluster
5942 for (Int_t i=0; i<nseed; i++) {
91162307 5943 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i), &t=*pt;
1c53abe2 5944 if (!pt) continue;
51ad6848 5945 if (nr==80) pt->UpdateReference();
1c53abe2 5946 if (!pt->IsActive()) continue;
91162307 5947 // if ( (fSectors ==fOuterSec) && (pt->fFirstPoint-fParam->GetNRowLow())<nr) continue;
b9671574 5948 if (pt->GetRelativeSector()>17) {
1627d1c4 5949 continue;
5950 }
91162307 5951 UpdateClusters(t,nr);
1c53abe2 5952 }
5953 // prolonagate to the nearest cluster - if founded
5954 for (Int_t i=0; i<nseed; i++) {
91162307 5955 AliTPCseed *pt=(AliTPCseed*)arr->UncheckedAt(i);
1c53abe2 5956 if (!pt) continue;
1627d1c4 5957 if (!pt->IsActive()) continue;
91162307 5958 // if ((fSectors ==fOuterSec) && (pt->fFirstPoint-fParam->GetNRowLow())<nr) continue;
b9671574 5959 if (pt->GetRelativeSector()>17) {
1627d1c4 5960 continue;
5961 }
91162307 5962 FollowToNextCluster(*pt,nr);
1c53abe2 5963 }
91162307 5964 }
5965}
5966
47966a6d 5967void AliTPCtrackerMI::PrepareForBackProlongation(TObjArray * arr,Float_t fac) const
91162307 5968{
5969 //
5970 //
5971 // if we use TPC track itself we have to "update" covariance
5972 //
5973 Int_t nseed= arr->GetEntriesFast();
5974 for (Int_t i=0;i<nseed;i++){
5975 AliTPCseed *pt = (AliTPCseed*)arr->UncheckedAt(i);
5976 if (pt) {
5977 pt->Modify(fac);
5978 //
5979 //rotate to current local system at first accepted point
b9671574 5980 Int_t index = pt->GetClusterIndex2(pt->GetFirstPoint());
91162307 5981 Int_t sec = (index&0xff000000)>>24;
5982 sec = sec%18;
5983 Float_t angle1 = fInnerSec->GetAlpha()*sec+fInnerSec->GetAlphaShift();
5984 if (angle1>TMath::Pi())
5985 angle1-=2.*TMath::Pi();
5986 Float_t angle2 = pt->GetAlpha();
5987
5988 if (TMath::Abs(angle1-angle2)>0.001){
5989 pt->Rotate(angle1-angle2);
5990 //angle2 = pt->GetAlpha();
5991 //pt->fRelativeSector = pt->GetAlpha()/fInnerSec->GetAlpha();
5992 //if (pt->GetAlpha()<0)
5993 // pt->fRelativeSector+=18;
5994 //sec = pt->fRelativeSector;
5995 }
5996
5997 }
5998
5999 }
6000
6001
6002}
47966a6d 6003void AliTPCtrackerMI::PrepareForProlongation(TObjArray * arr, Float_t fac) const
91162307 6004{
6005 //
6006 //
6007 // if we use TPC track itself we have to "update" covariance
6008 //
6009 Int_t nseed= arr->GetEntriesFast();
6010 for (Int_t i=0;i<nseed;i++){
6011 AliTPCseed *pt = (AliTPCseed*)arr->UncheckedAt(i);
6012 if (pt) {
6013 pt->Modify(fac);
b9671574 6014 pt->SetFirstPoint(pt->GetLastPoint());
91162307 6015 }
6016
6017 }
6018
6019
6020}
6021
6022Int_t AliTPCtrackerMI::PropagateBack(TObjArray * arr)
6023{
6024 //
6025 // make back propagation
6026 //
6027 Int_t nseed= arr->GetEntriesFast();
6028 for (Int_t i=0;i<nseed;i++){
6029 AliTPCseed *pt = (AliTPCseed*)arr->UncheckedAt(i);
51ad6848 6030 if (pt&& pt->GetKinkIndex(0)<=0) {
d9b8978b 6031 //AliTPCseed *pt2 = new AliTPCseed(*pt);
91162307 6032 fSectors = fInnerSec;
d26d9159 6033 //FollowBackProlongation(*pt,fInnerSec->GetNRows()-1);
6034 //fSectors = fOuterSec;
4d158c36 6035 FollowBackProlongation(*pt,fInnerSec->GetNRows()+fOuterSec->GetNRows()-1);
6036 //if (pt->GetNumberOfClusters()<(pt->fEsd->GetTPCclusters(0)) ){
d9b8978b 6037 // Error("PropagateBack","Not prolonged track %d",pt->GetLabel());
4d158c36 6038 // FollowBackProlongation(*pt2,fInnerSec->GetNRows()+fOuterSec->GetNRows()-1);
d9b8978b 6039 //}
51ad6848 6040 }
6041 if (pt&& pt->GetKinkIndex(0)>0) {
6042 AliESDkink * kink = fEvent->GetKink(pt->GetKinkIndex(0)-1);
b9671574 6043 pt->SetFirstPoint(kink->GetTPCRow0());
51ad6848 6044 fSectors = fInnerSec;
6045 FollowBackProlongation(*pt,fInnerSec->GetNRows()+fOuterSec->GetNRows()-1);
6046 }
6047
91162307 6048 }
6049 return 0;
6050}
6051
6052
6053Int_t AliTPCtrackerMI::PropagateForward2(TObjArray * arr)
6054{
6055 //
6056 // make forward propagation
6057 //
6058 Int_t nseed= arr->GetEntriesFast();
4d158c36 6059 //
91162307 6060 for (Int_t i=0;i<nseed;i++){
6061 AliTPCseed *pt = (AliTPCseed*)arr->UncheckedAt(i);
6062 if (pt) {
91162307 6063 FollowProlongation(*pt,0);
4d158c36 6064 }
91162307 6065 }
6066 return 0;
6067}
6068
6069
6070Int_t AliTPCtrackerMI::PropagateForward()
6071{
b67e07dc 6072 //
6073 // propagate track forward
4d158c36 6074 //UnsignClusters();
d26d9159 6075 Int_t nseed = fSeeds->GetEntriesFast();
6076 for (Int_t i=0;i<nseed;i++){
6077 AliTPCseed *pt = (AliTPCseed*)fSeeds->UncheckedAt(i);
6078 if (pt){
6079 AliTPCseed &t = *pt;
6080 Double_t alpha=t.GetAlpha() - fSectors->GetAlphaShift();
6081 if (alpha > 2.*TMath::Pi()) alpha -= 2.*TMath::Pi();
6082 if (alpha < 0. ) alpha += 2.*TMath::Pi();
b9671574 6083 t.SetRelativeSector(Int_t(alpha/fSectors->GetAlpha()+0.0001)%fN);
d26d9159 6084 }
6085 }
6086
91162307 6087 fSectors = fOuterSec;
d26d9159 6088 ParallelTracking(fSeeds,fOuterSec->GetNRows()+fInnerSec->GetNRows()-1,fInnerSec->GetNRows());
91162307 6089 fSectors = fInnerSec;
d26d9159 6090 ParallelTracking(fSeeds,fInnerSec->GetNRows()-1,0);
91162307 6091 //WriteTracks();
6092 return 1;
6093}
6094
6095
6096
6097
6098
6099
6100Int_t AliTPCtrackerMI::PropagateBack(AliTPCseed * pt, Int_t row0, Int_t row1)
6101{
6102 //
6103 // make back propagation, in between row0 and row1
6104 //
1c53abe2 6105
91162307 6106 if (pt) {
6107 fSectors = fInnerSec;
6108 Int_t r1;
6109 //
6110 if (row1<fSectors->GetNRows())
6111 r1 = row1;
6112 else
6113 r1 = fSectors->GetNRows()-1;
6114
6115 if (row0<fSectors->GetNRows()&& r1>0 )
6116 FollowBackProlongation(*pt,r1);
6117 if (row1<=fSectors->GetNRows())
6118 return 0;
6119 //
6120 r1 = row1 - fSectors->GetNRows();
6121 if (r1<=0) return 0;
6122 if (r1>=fOuterSec->GetNRows()) return 0;
6123 fSectors = fOuterSec;
6124 return FollowBackProlongation(*pt,r1);
6125 }
6126 return 0;
6127}
6128
6129
6130
6131
6132void AliTPCtrackerMI::GetShape(AliTPCseed * seed, Int_t row)
6133{
6134 //
6135 //
6136 Float_t sd2 = TMath::Abs((fParam->GetZLength()-TMath::Abs(seed->GetZ())))*fParam->GetDiffL()*fParam->GetDiffL();
6137 // Float_t padlength = fParam->GetPadPitchLength(seed->fSector);
6138 Float_t padlength = GetPadPitchLength(row);
6139 //
b9671574 6140 Float_t sresy = (seed->GetSector() < fParam->GetNSector()/2) ? 0.2 :0.3;
3f82c4f2 6141 Double_t angulary = seed->GetSnp();
91162307 6142 angulary = angulary*angulary/(1-angulary*angulary);
b9671574 6143 seed->SetCurrentSigmaY2(sd2+padlength*padlength*angulary/12.+sresy*sresy);
91162307 6144 //
6145 Float_t sresz = fParam->GetZSigma();
6146 Float_t angularz = seed->GetTgl();
b9671574 6147 seed->SetCurrentSigmaZ2(sd2+padlength*padlength*angularz*angularz*(1+angulary)/12.+sresz*sresz);
91162307 6148 /*
6149 Float_t wy = GetSigmaY(seed);
6150 Float_t wz = GetSigmaZ(seed);
6151 wy*=wy;
6152 wz*=wz;
6153 if (TMath::Abs(wy/seed->fCurrentSigmaY2-1)>0.0001 || TMath::Abs(wz/seed->fCurrentSigmaZ2-1)>0.0001 ){
6154 printf("problem\n");
6155 }
6156 */
1c53abe2 6157}
6158
91162307 6159
1c53abe2 6160Float_t AliTPCtrackerMI::GetSigmaY(AliTPCseed * seed)
6161{
6162 //
6163 //
c9427e08 6164 Float_t sd2 = TMath::Abs((fParam->GetZLength()-TMath::Abs(seed->GetZ())))*fParam->GetDiffL()*fParam->GetDiffL();
b9671574 6165 Float_t padlength = fParam->GetPadPitchLength(seed->GetSector());
6166 Float_t sres = (seed->GetSector() < fParam->GetNSector()/2) ? 0.2 :0.3;
1c53abe2 6167 Float_t angular = seed->GetSnp();
6168 angular = angular*angular/(1-angular*angular);
6169 // angular*=angular;
6170 //angular = TMath::Sqrt(angular/(1-angular));
6171 Float_t res = TMath::Sqrt(sd2+padlength*padlength*angular/12.+sres*sres);
6172 return res;
6173}
6174Float_t AliTPCtrackerMI::GetSigmaZ(AliTPCseed * seed)
6175{
6176 //
6177 //
c9427e08 6178 Float_t sd2 = TMath::Abs((fParam->GetZLength()-TMath::Abs(seed->GetZ())))*fParam->GetDiffL()*fParam->GetDiffL();
b9671574 6179 Float_t padlength = fParam->GetPadPitchLength(seed->GetSector());
1c53abe2 6180 Float_t sres = fParam->GetZSigma();
6181 Float_t angular = seed->GetTgl();
6182 Float_t res = TMath::Sqrt(sd2+padlength*padlength*angular*angular/12.+sres*sres);
6183 return res;
6184}
6185
6186
1c53abe2 6187//__________________________________________________________________________
af32720d 6188void AliTPCtrackerMI::CookLabel(AliKalmanTrack *tk, Float_t wrong) const {
1c53abe2 6189 //--------------------------------------------------------------------
6190 //This function "cooks" a track label. If label<0, this track is fake.
6191 //--------------------------------------------------------------------
af32720d 6192 AliTPCseed * t = (AliTPCseed*)tk;
1c53abe2 6193 Int_t noc=t->GetNumberOfClusters();
91162307 6194 if (noc<10){
d26d9159 6195 //printf("\nnot founded prolongation\n\n\n");
6196 //t->Dump();
91162307 6197 return ;
6198 }
6199 Int_t lb[160];
6200 Int_t mx[160];
6201 AliTPCclusterMI *clusters[160];
6202 //
6203 for (Int_t i=0;i<160;i++) {
6204 clusters[i]=0;
6205 lb[i]=mx[i]=0;
6206 }
1c53abe2 6207
6208 Int_t i;
91162307 6209 Int_t current=0;
6210 for (i=0; i<160 && current<noc; i++) {
6211
6212 Int_t index=t->GetClusterIndex2(i);
6213 if (index<=0) continue;
6214 if (index&0x8000) continue;
6215 //
6216 //clusters[current]=GetClusterMI(index);
b9671574 6217 if (t->GetClusterPointer(i)){
6218 clusters[current]=t->GetClusterPointer(i);
91162307 6219 current++;
6220 }
1c53abe2 6221 }
91162307 6222 noc = current;
1c53abe2 6223
6224 Int_t lab=123456789;
6225 for (i=0; i<noc; i++) {
6226 AliTPCclusterMI *c=clusters[i];
91162307 6227 if (!c) continue;
1c53abe2 6228 lab=TMath::Abs(c->GetLabel(0));
6229 Int_t j;
6230 for (j=0; j<noc; j++) if (lb[j]==lab || mx[j]==0) break;
6231 lb[j]=lab;
6232 (mx[j])++;
6233 }
6234
6235 Int_t max=0;
6236 for (i=0; i<noc; i++) if (mx[i]>max) {max=mx[i]; lab=lb[i];}
6237
6238 for (i=0; i<noc; i++) {
9918f10a 6239 AliTPCclusterMI *c=clusters[i];
91162307 6240 if (!c) continue;
1c53abe2 6241 if (TMath::Abs(c->GetLabel(1)) == lab ||
6242 TMath::Abs(c->GetLabel(2)) == lab ) max++;
6243 }
6244
6245 if ((1.- Float_t(max)/noc) > wrong) lab=-lab;
6246
6247 else {
6248 Int_t tail=Int_t(0.10*noc);
6249 max=0;
91162307 6250 Int_t ind=0;
6251 for (i=1; i<=160&&ind<tail; i++) {
6252 // AliTPCclusterMI *c=clusters[noc-i];
6253 AliTPCclusterMI *c=clusters[i];
6254 if (!c) continue;
1c53abe2 6255 if (lab == TMath::Abs(c->GetLabel(0)) ||
6256 lab == TMath::Abs(c->GetLabel(1)) ||
6257 lab == TMath::Abs(c->GetLabel(2))) max++;
91162307 6258 ind++;
1c53abe2 6259 }
6260 if (max < Int_t(0.5*tail)) lab=-lab;
6261 }
6262
6263 t->SetLabel(lab);
6264
91162307 6265 // delete[] lb;
6266 //delete[] mx;
6267 //delete[] clusters;
1c53abe2 6268}
6269
47966a6d 6270
51ad6848 6271//__________________________________________________________________________
6272Int_t AliTPCtrackerMI::CookLabel(AliTPCseed *t, Float_t wrong,Int_t first, Int_t last) const {
6273 //--------------------------------------------------------------------
6274 //This function "cooks" a track label. If label<0, this track is fake.
6275 //--------------------------------------------------------------------
6276 Int_t noc=t->GetNumberOfClusters();
6277 if (noc<10){
6278 //printf("\nnot founded prolongation\n\n\n");
6279 //t->Dump();
6280 return -1;
6281 }
6282 Int_t lb[160];
6283 Int_t mx[160];
6284 AliTPCclusterMI *clusters[160];
6285 //
6286 for (Int_t i=0;i<160;i++) {
6287 clusters[i]=0;
6288 lb[i]=mx[i]=0;
6289 }
6290
6291 Int_t i;
6292 Int_t current=0;
6293 for (i=0; i<160 && current<noc; i++) {
6294 if (i<first) continue;
6295 if (i>last) continue;
6296 Int_t index=t->GetClusterIndex2(i);
6297 if (index<=0) continue;
6298 if (index&0x8000) continue;
6299 //
6300 //clusters[current]=GetClusterMI(index);
b9671574 6301 if (t->GetClusterPointer(i)){
6302 clusters[current]=t->GetClusterPointer(i);
51ad6848 6303 current++;
6304 }
6305 }
6306 noc = current;
6307 if (noc<5) return -1;
6308 Int_t lab=123456789;
6309 for (i=0; i<noc; i++) {
6310 AliTPCclusterMI *c=clusters[i];
6311 if (!c) continue;
6312 lab=TMath::Abs(c->GetLabel(0));
6313 Int_t j;
6314 for (j=0; j<noc; j++) if (lb[j]==lab || mx[j]==0) break;
6315 lb[j]=lab;
6316 (mx[j])++;
6317 }
6318
6319 Int_t max=0;
6320 for (i=0; i<noc; i++) if (mx[i]>max) {max=mx[i]; lab=lb[i];}
6321
6322 for (i=0; i<noc; i++) {
6323 AliTPCclusterMI *c=clusters[i];
6324 if (!c) continue;
6325 if (TMath::Abs(c->GetLabel(1)) == lab ||
6326 TMath::Abs(c->GetLabel(2)) == lab ) max++;
6327 }
6328
6329 if ((1.- Float_t(max)/noc) > wrong) lab=-lab;
6330
6331 else {
6332 Int_t tail=Int_t(0.10*noc);
6333 max=0;
6334 Int_t ind=0;
6335 for (i=1; i<=160&&ind<tail; i++) {
6336 // AliTPCclusterMI *c=clusters[noc-i];
6337 AliTPCclusterMI *c=clusters[i];
6338 if (!c) continue;
6339 if (lab == TMath::Abs(c->GetLabel(0)) ||
6340 lab == TMath::Abs(c->GetLabel(1)) ||
6341 lab == TMath::Abs(c->GetLabel(2))) max++;
6342 ind++;
6343 }
6344 if (max < Int_t(0.5*tail)) lab=-lab;
6345 }
6346
6347 // t->SetLabel(lab);
6348 return lab;
6349 // delete[] lb;
6350 //delete[] mx;
6351 //delete[] clusters;
6352}
6353
6354
47966a6d 6355Int_t AliTPCtrackerMI::AliTPCSector::GetRowNumber(Double_t x) const
6356{
6357 //return pad row number for this x
6358 Double_t r;
6359 if (fN < 64){
6360 r=fRow[fN-1].GetX();
6361 if (x > r) return fN;
6362 r=fRow[0].GetX();
6363 if (x < r) return -1;
6364 return Int_t((x-r)/fPadPitchLength + 0.5);}
6365 else{
6366 r=fRow[fN-1].GetX();
6367 if (x > r) return fN;
6368 r=fRow[0].GetX();
6369 if (x < r) return -1;
6370 Double_t r1=fRow[64].GetX();
6371 if(x<r1){
6372 return Int_t((x-r)/f1PadPitchLength + 0.5);}
6373 else{
6374 return (Int_t((x-r1)/f2PadPitchLength + 0.5)+64);}
6375 }
6376}
6377
eea478d3 6378Int_t AliTPCtrackerMI::GetRowNumber(Double_t x[3]) const
6379{
6380 //return pad row number for given x vector
6381 Float_t phi = TMath::ATan2(x[1],x[0]);
6382 if(phi<0) phi=2.*TMath::Pi()+phi;
6383 // Get the local angle in the sector philoc
6384 const Float_t kRaddeg = 180/3.14159265358979312;
6385 Float_t phiangle = (Int_t (phi*kRaddeg/20.) + 0.5)*20./kRaddeg;
6386 Double_t localx = x[0]*TMath::Cos(phiangle)-x[1]*TMath::Sin(phiangle);
6387 return GetRowNumber(localx);
6388}
6389
1c53abe2 6390//_________________________________________________________________________
6391void AliTPCtrackerMI::AliTPCSector::Setup(const AliTPCParam *par, Int_t f) {
6392 //-----------------------------------------------------------------------
6393 // Setup inner sector
6394 //-----------------------------------------------------------------------
6395 if (f==0) {
6396 fAlpha=par->GetInnerAngle();
6397 fAlphaShift=par->GetInnerAngleShift();
6398 fPadPitchWidth=par->GetInnerPadPitchWidth();
6399 fPadPitchLength=par->GetInnerPadPitchLength();
6400 fN=par->GetNRowLow();
6401 fRow=new AliTPCRow[fN];
6402 for (Int_t i=0; i<fN; i++) {
6403 fRow[i].SetX(par->GetPadRowRadiiLow(i));
b9671574 6404 fRow[i].SetDeadZone(1.5); //1.5 cm of dead zone
1c53abe2 6405 }
6406 } else {
6407 fAlpha=par->GetOuterAngle();
6408 fAlphaShift=par->GetOuterAngleShift();
6409 fPadPitchWidth = par->GetOuterPadPitchWidth();
6410 fPadPitchLength = par->GetOuter1PadPitchLength();
6411 f1PadPitchLength = par->GetOuter1PadPitchLength();
6412 f2PadPitchLength = par->GetOuter2PadPitchLength();
6413
6414 fN=par->GetNRowUp();
6415 fRow=new AliTPCRow[fN];
6416 for (Int_t i=0; i<fN; i++) {
6417 fRow[i].SetX(par->GetPadRowRadiiUp(i));
b9671574 6418 fRow[i].SetDeadZone(1.5); // 1.5 cm of dead zone
1c53abe2 6419 }
6420 }
6421}
6422
b67e07dc 6423AliTPCtrackerMI::AliTPCRow::AliTPCRow() {
6424 //
6425 // default constructor
6426 fN=0;
6427 fN1=0;
6428 fN2=0;
6429 fClusters1=0;
6430 fClusters2=0;
6431}
1c53abe2 6432
6433AliTPCtrackerMI::AliTPCRow::~AliTPCRow(){
6434 //
b67e07dc 6435
1c53abe2 6436}
6437
6438
6439
1c53abe2 6440//_________________________________________________________________________
6441void
6442AliTPCtrackerMI::AliTPCRow::InsertCluster(const AliTPCclusterMI* c, UInt_t index) {
6443 //-----------------------------------------------------------------------
6444 // Insert a cluster into this pad row in accordence with its y-coordinate
6445 //-----------------------------------------------------------------------
6446 if (fN==kMaxClusterPerRow) {
6447 cerr<<"AliTPCRow::InsertCluster(): Too many clusters !\n"; return;
6448 }
6449 if (fN==0) {fIndex[0]=index; fClusters[fN++]=c; return;}
6450 Int_t i=Find(c->GetZ());
6451 memmove(fClusters+i+1 ,fClusters+i,(fN-i)*sizeof(AliTPCclusterMI*));
6452 memmove(fIndex +i+1 ,fIndex +i,(fN-i)*sizeof(UInt_t));
6453 fIndex[i]=index; fClusters[i]=c; fN++;
6454}
6455
982aff31 6456void AliTPCtrackerMI::AliTPCRow::ResetClusters() {
6457 //
6458 // reset clusters
6459 fN = 0;
6460 fN1 = 0;
6461 fN2 = 0;
6462 //delete[] fClusterArray;
6463 if (fClusters1) delete []fClusters1;
6464 if (fClusters2) delete []fClusters2;
6465 //fClusterArray=0;
6466 fClusters1 = 0;
6467 fClusters2 = 0;
6468}
6469
91162307 6470
1c53abe2 6471//___________________________________________________________________
6472Int_t AliTPCtrackerMI::AliTPCRow::Find(Double_t z) const {
6473 //-----------------------------------------------------------------------
6474 // Return the index of the nearest cluster
6475 //-----------------------------------------------------------------------
6476 if (fN==0) return 0;
6477 if (z <= fClusters[0]->GetZ()) return 0;
6478 if (z > fClusters[fN-1]->GetZ()) return fN;
6479 Int_t b=0, e=fN-1, m=(b+e)/2;
6480 for (; b<e; m=(b+e)/2) {
6481 if (z > fClusters[m]->GetZ()) b=m+1;
6482 else e=m;
6483 }
6484 return m;
6485}
6486
6487
6488
1627d1c4 6489//___________________________________________________________________
6490AliTPCclusterMI * AliTPCtrackerMI::AliTPCRow::FindNearest(Double_t y, Double_t z, Double_t roady, Double_t roadz) const {
6491 //-----------------------------------------------------------------------
6492 // Return the index of the nearest cluster in z y
6493 //-----------------------------------------------------------------------
6494 Float_t maxdistance = roady*roady + roadz*roadz;
6495
6496 AliTPCclusterMI *cl =0;
6497 for (Int_t i=Find(z-roadz); i<fN; i++) {
6498 AliTPCclusterMI *c=(AliTPCclusterMI*)(fClusters[i]);
6499 if (c->GetZ() > z+roadz) break;
6500 if ( (c->GetY()-y) > roady ) continue;
6501 Float_t distance = (c->GetZ()-z)*(c->GetZ()-z)+(c->GetY()-y)*(c->GetY()-y);
6502 if (maxdistance>distance) {
6503 maxdistance = distance;
6504 cl=c;
6505 }
6506 }
6507 return cl;
6508}
6509
91162307 6510AliTPCclusterMI * AliTPCtrackerMI::AliTPCRow::FindNearest2(Double_t y, Double_t z, Double_t roady, Double_t roadz,UInt_t & index) const
6511{
6512 //-----------------------------------------------------------------------
6513 // Return the index of the nearest cluster in z y
6514 //-----------------------------------------------------------------------
6515 Float_t maxdistance = roady*roady + roadz*roadz;
91162307 6516 AliTPCclusterMI *cl =0;
3381b665 6517
6518 //PH Check boundaries. 510 is the size of fFastCluster
6519 Int_t iz1 = Int_t(z-roadz+254.5);
6520 if (iz1<0 || iz1>=510) return cl;
b9671574 6521 iz1 = TMath::Max(GetFastCluster(iz1)-1,0);
3381b665 6522 Int_t iz2 = Int_t(z+roadz+255.5);
6523 if (iz2<0 || iz2>=510) return cl;
b9671574 6524 iz2 = TMath::Min(GetFastCluster(iz2)+1,fN);
3381b665 6525
91162307 6526 //FindNearest3(y,z,roady,roadz,index);
6527 // for (Int_t i=Find(z-roadz); i<fN; i++) {
6528 for (Int_t i=iz1; i<iz2; i++) {
6529 AliTPCclusterMI *c=(AliTPCclusterMI*)(fClusters[i]);
6530 if (c->GetZ() > z+roadz) break;
6531 if ( c->GetY()-y > roady ) continue;
6532 if ( y-c->GetY() > roady ) continue;
6533 Float_t distance = (c->GetZ()-z)*(c->GetZ()-z)+(c->GetY()-y)*(c->GetY()-y);
6534 if (maxdistance>distance) {
6535 maxdistance = distance;
6536 cl=c;
6537 index =i;
6538 //roady = TMath::Sqrt(maxdistance);
6539 }
6540 }
6541 return cl;
6542}
6543
6544
6545
6546AliTPCclusterMI * AliTPCtrackerMI::AliTPCRow::FindNearest3(Double_t y, Double_t z, Double_t roady, Double_t roadz,UInt_t & index) const
6547{
6548 //-----------------------------------------------------------------------
6549 // Return the index of the nearest cluster in z y
6550 //-----------------------------------------------------------------------
6551 Float_t maxdistance = roady*roady + roadz*roadz;
6552 // Int_t iz = Int_t(z+255.);
6553 AliTPCclusterMI *cl =0;
6554 for (Int_t i=Find(z-roadz); i<fN; i++) {
6555 //for (Int_t i=fFastCluster[iz-2]; i<fFastCluster[iz+2]; i++) {
6556 AliTPCclusterMI *c=(AliTPCclusterMI*)(fClusters[i]);
6557 if (c->GetZ() > z+roadz) break;
6558 if ( c->GetY()-y > roady ) continue;
6559 if ( y-c->GetY() > roady ) continue;
6560 Float_t distance = (c->GetZ()-z)*(c->GetZ()-z)+(c->GetY()-y)*(c->GetY()-y);
6561 if (maxdistance>distance) {
6562 maxdistance = distance;
6563 cl=c;
6564 index =i;
6565 //roady = TMath::Sqrt(maxdistance);
6566 }
6567 }
6568 return cl;
6569}
1627d1c4 6570
6571
6572
6573
91162307 6574
81e97e0d 6575// AliTPCTrackerPoint * AliTPCseed::GetTrackPoint(Int_t i)
6576// {
6577// //
6578// //
6579// return &fTrackPoints[i];
6580// }
91162307 6581
91162307 6582