1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
16 //_________________________________________________________________________
17 // Implementation version 1 of algorithm class to construct PHOS track segments
18 // Associates EMC and PPSD clusters
19 // Unfolds the EMC cluster
21 //*-- Author: Dmitri Peressounko (RRC Ki & SUBATECH)
24 // --- ROOT system ---
29 #include "TBenchmark.h"
30 // --- Standard library ---
35 // --- AliRoot header files ---
37 #include "AliPHOSTrackSegmentMakerv1.h"
38 #include "AliPHOSClusterizerv1.h"
39 #include "AliPHOSTrackSegment.h"
40 #include "AliPHOSCpvRecPoint.h"
41 #include "AliPHOSPpsdRecPoint.h"
42 #include "AliPHOSLink.h"
43 #include "AliPHOSv0.h"
46 ClassImp( AliPHOSTrackSegmentMakerv1)
49 //____________________________________________________________________________
50 AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1() : AliPHOSTrackSegmentMaker()
53 SetTitle("version 1") ;
54 SetName("AliPHOSTrackSegmentMaker") ;
64 fIsInitialized = kFALSE ;
66 //____________________________________________________________________________
67 AliPHOSTrackSegmentMakerv1:: AliPHOSTrackSegmentMakerv1(const char* headerFile, const char* branchTitle): AliPHOSTrackSegmentMaker()
70 SetTitle("version 1") ;
71 SetName("AliPHOSTrackSegmentMaker") ;
80 fHeaderFileName = headerFile ;
81 fRecPointsBranchTitle = branchTitle ;
83 TFile * file = (TFile*) gROOT->GetFile(fHeaderFileName.Data() ) ;
86 file = new TFile(fHeaderFileName.Data(),"update") ;
87 gAlice = (AliRun *) file->Get("gAlice") ;
90 AliPHOS * phos = (AliPHOS *) gAlice->GetDetector("PHOS") ;
91 fGeom = AliPHOSGeometry::GetInstance(phos->GetGeometry()->GetName(),phos->GetGeometry()->GetTitle() );
93 fEmcRecPoints = new TObjArray(200) ;
94 fCpvRecPoints = new TObjArray(200) ;
95 fClusterizer = new AliPHOSClusterizerv1() ;
97 fTrackSegments = new TClonesArray("AliPHOSTrackSegment",200) ;
99 fLinkLowArray = new TClonesArray("AliPHOSLink", 1000);
100 fLinkUpArray = new TClonesArray("AliPHOSLink", 1000);
102 fIsInitialized = kTRUE ;
105 //____________________________________________________________________________
106 void AliPHOSTrackSegmentMakerv1::Init(){
109 if(fHeaderFileName.IsNull())
110 fHeaderFileName = "galice.root" ;
113 TFile * file = (TFile*) gROOT->GetFile(fHeaderFileName.Data() ) ;
116 file = new TFile(fHeaderFileName.Data(),"update") ;
117 gAlice = (AliRun *) file->Get("gAlice") ;
120 AliPHOS * phos = (AliPHOS *) gAlice->GetDetector("PHOS") ;
121 fGeom = AliPHOSGeometry::GetInstance(phos->GetGeometry()->GetName(),phos->GetGeometry()->GetTitle() );
124 fEmcRecPoints = new TObjArray(200) ;
125 fCpvRecPoints = new TObjArray(200) ;
126 fClusterizer = new AliPHOSClusterizerv1() ;
129 fTrackSegments = new TClonesArray("AliPHOSTrackSegment",200) ;
131 fLinkLowArray = new TClonesArray("AliPHOSLink", 1000);
132 fLinkUpArray = new TClonesArray("AliPHOSLink", 1000);
134 fIsInitialized = kTRUE ;
138 //____________________________________________________________________________
139 AliPHOSTrackSegmentMakerv1::~AliPHOSTrackSegmentMakerv1()
142 if(fLinkLowArray) delete fLinkLowArray ;
143 if(fLinkUpArray) delete fLinkUpArray ;
146 //____________________________________________________________________________
147 void AliPHOSTrackSegmentMakerv1::FillOneModule()
149 // Finds bounds in which clusters from one PHOS module are
153 Int_t totalEmc = fEmcRecPoints->GetEntriesFast() ;
154 for(fEmcFirst = fEmcLast; (fEmcLast < totalEmc) &&
155 (((AliPHOSRecPoint *) fEmcRecPoints->At(fEmcLast))->GetPHOSMod() == fModule );
160 Int_t totalCpv = fCpvRecPoints->GetEntriesFast() ;
162 if(fModule <= fGeom->GetNCPVModules()){ // in CPV geometry
164 for(fCpvFirst = fCpvLast; (fCpvLast < totalCpv) &&
165 (((AliPHOSRecPoint *) fCpvRecPoints->At(fCpvLast))->GetPHOSMod() == fModule );
168 fPpsdFirst = fCpvLast ; //To avoid scanning RecPoints between fPpsdFirst and fPpsdLast
169 fPpsdLast = fCpvLast ; //and to be ready to switch to mixed geometry
171 else{ //in PPSD geometry
172 fCpvLast = fPpsdLast ;
174 for(fCpvFirst = fCpvLast; (fCpvLast < totalCpv) &&
175 (((AliPHOSPpsdRecPoint *) fCpvRecPoints->At(fCpvLast))->GetPHOSMod() == fModule ) &&
176 (((AliPHOSPpsdRecPoint *) fCpvRecPoints->At(fCpvLast))->GetUp()) ;
179 fPpsdLast= fCpvLast ;
180 for(fPpsdFirst = fPpsdLast; (fPpsdLast < totalCpv) &&
181 (((AliPHOSPpsdRecPoint *) fCpvRecPoints->At(fPpsdLast))->GetPHOSMod() == fModule ) &&
182 (!((AliPHOSPpsdRecPoint *) fCpvRecPoints->At(fPpsdLast))->GetUp()) ;
187 //____________________________________________________________________________
188 Float_t AliPHOSTrackSegmentMakerv1::GetDistanceInPHOSPlane(AliPHOSEmcRecPoint * emcClu,AliPHOSRecPoint * cpvClu, Bool_t &toofar)
190 // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
191 //clusters are sorted in "rows" and "columns" of width 1 cm
192 Float_t delta = 1 ; // Width of the rows in sorting of RecPoints (in cm)
193 // if you change this value, change it as well in xxxRecPoint::Compare()
199 emcClu->GetLocalPosition(vecEmc) ;
200 cpvClu->GetLocalPosition(vecCpv) ;
202 if(emcClu->GetPHOSMod() == cpvClu->GetPHOSMod()){
203 if(vecCpv.X() <= vecEmc.X() + fR0 + 2*delta ){
205 vecCpv = vecCpv - vecEmc ;
209 } // if xPpsd >= xEmc + ...
222 //____________________________________________________________________________
223 void AliPHOSTrackSegmentMakerv1::MakeLinks()
225 // Finds distances (links) between all EMC and PPSD clusters, which are not further apart from each other than fR0
227 fLinkUpArray->Clear() ;
228 fLinkLowArray->Clear() ;
230 AliPHOSRecPoint * ppsd ;
231 AliPHOSRecPoint * cpv ;
232 AliPHOSEmcRecPoint * emcclu ;
238 for(iEmcRP = fEmcFirst; iEmcRP < fEmcLast; iEmcRP++ ) {
239 emcclu = (AliPHOSEmcRecPoint *) fEmcRecPoints->At(iEmcRP) ;
243 for(iPpsd = fPpsdFirst; iPpsd < fPpsdLast;iPpsd++ ) {
245 ppsd = (AliPHOSRecPoint *) fCpvRecPoints->At(iPpsd) ;
246 Float_t r = GetDistanceInPHOSPlane(emcclu, ppsd, toofar) ;
251 new ((*fLinkLowArray)[iLinkLow++]) AliPHOSLink(r, iEmcRP, iPpsd) ;
255 for(iCpv = fCpvFirst; iCpv < fCpvLast;iCpv++ ) {
257 cpv = (AliPHOSRecPoint *) fCpvRecPoints->At(iCpv) ;
258 Float_t r = GetDistanceInPHOSPlane(emcclu, cpv, toofar) ;
263 new ((*fLinkUpArray)[iLinkUp++]) AliPHOSLink(r, iEmcRP, iCpv) ;
268 fLinkLowArray->Sort() ; //first links with smallest distances
269 fLinkUpArray->Sort() ;
272 //____________________________________________________________________________
273 void AliPHOSTrackSegmentMakerv1::MakePairs()
276 //Make arrays to mark clusters already chousen
277 Int_t * emcExist = 0;
278 if(fEmcLast > fEmcFirst)
279 emcExist = new Int_t[fEmcLast-fEmcFirst] ;
282 for(index = 0; index <fEmcLast-fEmcFirst; index ++)
283 emcExist[index] = 1 ;
285 Bool_t * cpvExist = 0;
286 if(fCpvLast > fCpvFirst)
287 cpvExist = new Bool_t[fCpvLast-fCpvFirst] ;
288 for(index = 0; index <fCpvLast-fCpvFirst; index ++)
289 cpvExist[index] = kTRUE ;
291 Bool_t * ppsdExist = 0;
292 if(fPpsdLast > fPpsdFirst)
293 ppsdExist = new Bool_t[fPpsdLast-fPpsdFirst] ;
294 for(index = 0; index <fPpsdLast-fPpsdFirst; index ++)
295 ppsdExist[index] = kTRUE ;
297 // Finds the smallest links and makes pairs of CPV and EMC clusters with smallest distance
298 TIter nextLow(fLinkLowArray) ;
299 TIter nextUp(fLinkUpArray) ;
301 AliPHOSLink * linkLow ;
302 AliPHOSLink * linkUp ;
305 AliPHOSRecPoint * nullpointer = 0 ;
307 while ( (linkLow = (AliPHOSLink *)nextLow() ) ){
309 if( (emcExist[linkLow->GetEmc()-fEmcFirst]> 0) && ppsdExist[linkLow->GetPpsd()-fPpsdFirst] ){ // RecPoints not removed yet
310 new ((*fTrackSegments)[fNTrackSegments]) AliPHOSTrackSegment((AliPHOSEmcRecPoint *) fEmcRecPoints->At(linkLow->GetEmc()),
312 (AliPHOSPpsdRecPoint *)fCpvRecPoints->At(linkLow->GetPpsd()) ) ;
314 ((AliPHOSTrackSegment* )fTrackSegments->At(fNTrackSegments))->SetIndexInList(fNTrackSegments);
315 //replace index of emc to negative and shifted index of TS
316 emcExist[linkLow->GetEmc()-fEmcFirst] = -2 - fNTrackSegments ;
318 ppsdExist[linkLow->GetPpsd()-fPpsdFirst] = kFALSE ;
324 while ( (linkUp = (AliPHOSLink *)nextUp() ) ){
325 if(emcExist[linkUp->GetEmc()-fEmcFirst] != -1){ //without ppsd Up yet
327 if(cpvExist[linkUp->GetPpsd()-fCpvFirst]){ //CPV still exist
329 if(emcExist[linkUp->GetEmc()-fEmcFirst] > 0){ //without ppsd Low => create new TS
331 new ((* fTrackSegments)[fNTrackSegments]) AliPHOSTrackSegment((AliPHOSEmcRecPoint *) fEmcRecPoints->At(linkUp->GetEmc()) ,
332 (AliPHOSPpsdRecPoint *)fCpvRecPoints->At(linkUp->GetPpsd()),
334 ((AliPHOSTrackSegment *) fTrackSegments->At(fNTrackSegments))->SetIndexInList(fNTrackSegments);
337 else{ // append ppsd Up to existing TS
338 ((AliPHOSTrackSegment *)fTrackSegments->At(-2-emcExist[linkUp->GetEmc()-fEmcFirst]))->SetCpvRecPoint((AliPHOSCpvRecPoint *)fCpvRecPoints->At(linkUp->GetPpsd()));
341 emcExist[linkUp->GetEmc()-fEmcFirst] = -1 ; //Mark emc that Cpv was found
342 //mark CPV recpoint as already used
343 cpvExist[linkUp->GetPpsd()-fCpvFirst] = kFALSE ;
344 } //if ppsdUp still exist
348 //look through emc recPoints left without CPV/PPSD
349 if(emcExist){ //if there is emc rec point
351 for(iEmcRP = 0; iEmcRP < fEmcLast-fEmcFirst ; iEmcRP++ ){
352 if(emcExist[iEmcRP] > 0 ){
353 new ((*fTrackSegments)[fNTrackSegments]) AliPHOSTrackSegment((AliPHOSEmcRecPoint *)fEmcRecPoints->At(iEmcRP+fEmcFirst),
356 ((AliPHOSTrackSegment *) fTrackSegments->At(fNTrackSegments))->SetIndexInList(fNTrackSegments);
364 //____________________________________________________________________________
365 void AliPHOSTrackSegmentMakerv1::Exec(Option_t * option)
367 // Makes the track segments out of the list of EMC and PPSD Recpoints and stores them in a list
369 if(! fIsInitialized) Init() ;
371 if(strstr(option,"tim"))
372 gBenchmark->Start("PHOSTSMaker");
374 Int_t nEvents = (Int_t) gAlice->TreeE()->GetEntries() ;
376 for(fEvent = 0;fEvent< nEvents; fEvent++){
377 if(!ReadRecPoints()) //reads RecPoints for event fEvent
380 for(fModule = 1; fModule <= fGeom->GetNModules() ; fModule++ ){
390 WriteTrackSegments() ;
391 if(strstr(option,"deb"))
392 PrintTrackSegments(option) ;
395 if(strstr(option,"tim")){
396 gBenchmark->Stop("PHOSTSMaker");
397 cout << "AliPHOSTSMaker:" << endl ;
398 cout << " took " << gBenchmark->GetCpuTime("PHOSTSMaker") << " seconds for making TS "
399 << gBenchmark->GetCpuTime("PHOSTSMaker")/nEvents << " seconds per event " << endl ;
405 //____________________________________________________________________________
406 void AliPHOSTrackSegmentMakerv1::Print(Option_t * option)const {
408 cout << "======== AliPHOSTrackSegmentMakerv1 ========" << endl ;
409 cout << "Making Track segments "<< endl ;
410 cout << " Headers file: " << fHeaderFileName.Data() << endl ;
411 cout << " RecPoints branch file name: " <<fRecPointsBranchTitle.Data() << endl ;
412 cout << " TrackSegments Branch file name: " << fTSBranchTitle.Data() << endl ;
413 cout << "with parameters: " << endl ;
414 cout << " Maximal EMC - CPV (PPSD) distance " << fR0 << endl ;
415 cout << "============================================" << endl ;
418 cout << "AliPHOSTrackSegmentMakerv1 not initialized " << endl ;
420 //____________________________________________________________________________
421 Bool_t AliPHOSTrackSegmentMakerv1::ReadRecPoints(){
423 //Make some initializations
424 fEmcRecPoints->Clear() ;
425 fCpvRecPoints->Clear() ;
426 fTrackSegments->Clear() ;
427 fNTrackSegments = 0 ;
436 gAlice->GetEvent(fEvent) ;
438 // Get TreeR header from file
440 sprintf(treeName,"TreeR%d",fEvent);
442 if(gAlice->TreeR()==0){
443 cout << "Error in AliPHOSTrackSegmentMakerv1 : no "<<treeName << endl ;
444 cout << " Do nothing " << endl ;
448 char * emcBranchName = new char[30];
449 // sprintf(emcBranchName,"PHOSEmcRP%d",fEvent);
450 sprintf(emcBranchName,"PHOSEmcRP");
451 char * cpvBranchName = new char[30];
452 // sprintf(cpvBranchName,"PHOSCpvRP%d",fEvent);
453 sprintf(cpvBranchName,"PHOSCpvRP");
454 char * cluBranchName = new char[30];
455 // sprintf(cluBranchName,"AliPHOSClusterizer%d",fEvent);
456 sprintf(cluBranchName,"AliPHOSClusterizer");
458 TBranch * emcBranch = 0;
459 TBranch * cpvBranch = 0;
460 TBranch * clusterizerBranch = 0;
462 TObjArray * branches = gAlice->TreeR()->GetListOfBranches() ;
464 Bool_t emcNotFound = kTRUE ;
465 Bool_t cpvNotFound = kTRUE ;
466 Bool_t clusterizerNotFound = kTRUE ;
468 for(ibranch = 0;ibranch <branches->GetEntries();ibranch++){
471 emcBranch=(TBranch *) branches->At(ibranch) ;
472 if( fRecPointsBranchTitle.CompareTo(emcBranch->GetTitle())==0 )
473 if( strcmp(emcBranch->GetName(),emcBranchName) == 0) {
474 emcNotFound = kFALSE ;
479 cpvBranch=(TBranch *) branches->At(ibranch) ;
480 if( fRecPointsBranchTitle.CompareTo(cpvBranch->GetTitle())==0 )
481 if( strcmp(cpvBranch->GetName(),cpvBranchName) == 0)
482 cpvNotFound = kFALSE ;
485 if(clusterizerNotFound){
486 clusterizerBranch = (TBranch *) branches->At(ibranch) ;
487 if( fRecPointsBranchTitle.CompareTo(clusterizerBranch->GetTitle()) == 0)
488 if( strcmp(clusterizerBranch->GetName(),cluBranchName) == 0)
489 clusterizerNotFound = kFALSE ;
494 if(clusterizerNotFound || emcNotFound || cpvNotFound){
495 cout << "AliPHOSTrackSegmentMakerv1: " << endl ;
496 cout << " Can't find Branch with RecPoints or Clusterizer " ;
497 cout << " Do nothing" <<endl ;
501 emcBranch->SetAddress(&fEmcRecPoints) ;
502 cpvBranch->SetAddress(&fCpvRecPoints) ;
503 clusterizerBranch->SetAddress(&fClusterizer) ;
505 gAlice->TreeR()->GetEvent(0) ;
507 delete emcBranchName;
508 delete cpvBranchName;
509 delete cluBranchName;
514 //____________________________________________________________________________
515 void AliPHOSTrackSegmentMakerv1::WriteTrackSegments(){
518 sprintf(treeName,"TreeR%d",fEvent);
521 //First, check, if branches already exist
522 TBranch * tsMakerBranch = 0;
523 TBranch * tsBranch = 0;
525 TObjArray * branches = gAlice->TreeR()->GetListOfBranches() ;
527 Bool_t tsMakerNotFound = kTRUE ;
528 Bool_t tsNotFound = kTRUE ;
530 for(ibranch = 0;(ibranch <branches->GetEntries())&&(tsMakerNotFound||tsNotFound);ibranch++){
532 tsMakerBranch=(TBranch *) branches->At(ibranch) ;
533 if( (strcmp(tsMakerBranch->GetName(),"AliPHOSTrackSegmentMaker") == 0) &&
534 (fTSBranchTitle.CompareTo( tsMakerBranch->GetTitle())==0 ))
535 tsMakerNotFound = kFALSE ;
538 tsBranch=(TBranch *) branches->At(ibranch) ;
539 if( (strcmp(tsBranch->GetName(),"PHOSTS") == 0) &&
540 (fTSBranchTitle.CompareTo( tsBranch->GetTitle())==0 ))
541 tsNotFound = kFALSE ;
545 if(!(tsMakerNotFound && tsNotFound )){
546 cout << "AliPHOSTrackSegmentMakerv1 error:"<< endl ;
547 cout << " Branches PHOSTS and AliPHOSTrackSegementMaker " << endl ;
548 cout << " with title '"<<fTSBranchTitle.Data() << "' already exist " << endl ;
549 cout << " can not overwrite " << endl ;
553 //Make branch in TreeR for TrackSegments
555 if(gSystem->Getenv("CONFIG_SPLIT_FILE")!=0){ //generating file name
556 filename = new char[strlen(gAlice->GetBaseFile())+20] ;
557 sprintf(filename,"%s/PHOS.Reco.root",gAlice->GetBaseFile()) ;
560 TDirectory *cwd = gDirectory;
563 Int_t bufferSize = 32000 ;
564 tsBranch = gAlice->TreeR()->Branch("PHOSTS",&fTrackSegments,bufferSize);
565 tsBranch->SetTitle(fTSBranchTitle.Data());
567 tsBranch->SetFile(filename);
568 TIter next( tsBranch->GetListOfBranches());
569 while ((tsBranch=(TBranch*)next())) {
570 tsBranch->SetFile(filename);
576 Int_t splitlevel = 0 ;
577 AliPHOSTrackSegmentMakerv1 * ts = this ;
578 tsMakerBranch = gAlice->TreeR()->Branch("AliPHOSTrackSegmentMaker","AliPHOSTrackSegmentMakerv1",
579 &ts,bufferSize,splitlevel);
580 tsMakerBranch->SetTitle(fTSBranchTitle.Data());
582 tsMakerBranch->SetFile(filename);
583 TIter next( tsMakerBranch->GetListOfBranches());
584 while ((tsMakerBranch=(TBranch*)next())) {
585 tsMakerBranch->SetFile(filename);
590 gAlice->TreeR()->Fill() ;
591 gAlice->TreeR()->Write(0,kOverwrite) ;
596 //____________________________________________________________________________
597 void AliPHOSTrackSegmentMakerv1::PrintTrackSegments(Option_t * option){
599 cout << "AliPHOSTrackSegmentMakerv1: " << endl ;
600 cout << " Found " << fTrackSegments->GetEntriesFast() << " trackSegments " << endl ;
602 if(strstr(option,"all")) { // printing found TS
603 cout << "TrackSegment # " << " EMC RP# " << " CPV RP# " << " PPSD RP#" << endl ;
606 for (index = 0 ; index <fTrackSegments->GetEntriesFast() ; index++) {
607 AliPHOSTrackSegment * ts = (AliPHOSTrackSegment * )fTrackSegments->At(index) ;
608 cout<<" "<< setw(4) << ts->GetIndexInList() << " "
609 <<setw(4) << ts->GetEmcIndex()<< " "
610 <<setw(4) << ts->GetCpvIndex()<< " "
611 <<setw(4) << ts->GetPpsdIndex()<< endl ;
614 cout << "-------------------------------------------------------"<< endl ;
617 //____________________________________________________________________________
618 void AliPHOSTrackSegmentMakerv1::SetRecPointsBranch(const char * title){
619 //set the title of RecPoints
620 fRecPointsBranchTitle = title ;
623 //____________________________________________________________________________
624 void AliPHOSTrackSegmentMakerv1::SetTrackSegmentsBranch(const char * title){
626 fTSBranchTitle = title ;