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 // Track segment for PHOS is list of
19 // EMC RecPoint + (possibly) CPV RecPoint + (possibly) PPSD RecPoint
20 // To find TrackSegments we do the following:
21 // for each EMC RecPoints we look at
22 // CPV/PPSD RecPoints in the radious fR0.
23 // If there is such a CPV RecPoint,
24 // we make "Link" it is just indexes of EMC and CPV/PPSD RecPoint and distance
25 // between them in the PHOS plane.
26 // Then we sort "Links" and starting from the
27 // least "Link" pointing to the unassined EMC and CPV RecPoints assing them to
29 // If there is no CPV/PPSD RecPoint we make TrackSegment
30 // consisting from EMC alone. There is no TrackSegments without EMC RecPoint.
32 // In principle this class should be called from AliPHOSReconstructioner, but
33 // one can use it as well in standalone mode.
35 // root [0] AliPHOSTrackSegmentMakerv1 * t = new AliPHOSTrackSegmentMaker("galice.root")
36 // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
37 // root [1] t->ExecuteTask()
38 // root [2] t->SetMaxEmcPpsdDistance(5)
39 // root [3] t->SetTrackSegmentsBranch("max distance 5 cm")
40 // root [4] t->ExecuteTask("deb all time")
42 //*-- Author: Dmitri Peressounko (RRC Ki & SUBATECH)
45 // --- ROOT system ---
51 #include "TBenchmark.h"
52 // --- Standard library ---
57 // --- AliRoot header files ---
59 #include "AliPHOSTrackSegmentMakerv1.h"
60 #include "AliPHOSClusterizerv1.h"
61 #include "AliPHOSTrackSegment.h"
62 #include "AliPHOSCpvRecPoint.h"
63 #include "AliPHOSLink.h"
64 #include "AliPHOSGetter.h"
68 ClassImp( AliPHOSTrackSegmentMakerv1)
71 //____________________________________________________________________________
72 AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1() : AliPHOSTrackSegmentMaker()
74 // default ctor (to be used mainly by Streamer)
82 fHeaderFileName = "" ;
83 fRecPointsBranchTitle = "" ;
84 fTrackSegmentsBranchTitle = "" ;
85 fTrackSegmentsInRun = 0 ;
88 //____________________________________________________________________________
89 AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1(const char * headerFile, const char * name) : AliPHOSTrackSegmentMaker(headerFile, name)
99 fHeaderFileName = GetTitle() ;
100 fRecPointsBranchTitle = GetName() ;
101 fTrackSegmentsBranchTitle = GetName() ;
102 fTrackSegmentsInRun = 0 ;
104 TString tsmName( GetName()) ;
105 tsmName.Append(":") ;
106 tsmName.Append(Version()) ;
113 //____________________________________________________________________________
114 AliPHOSTrackSegmentMakerv1::~AliPHOSTrackSegmentMakerv1()
117 if(fLinkUpArray) delete fLinkUpArray ;
120 //____________________________________________________________________________
121 void AliPHOSTrackSegmentMakerv1::FillOneModule()
123 // Finds first and last indexes between which
124 // clusters from one PHOS module are
125 TString taskName(GetName()) ;
126 taskName.Remove(taskName.Index(Version())-1) ;
127 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
128 TObjArray * emcRecPoints = gime->EmcRecPoints(taskName) ;
129 TObjArray * cpvRecPoints = gime->CpvRecPoints(taskName) ;
132 Int_t totalEmc = emcRecPoints->GetEntriesFast() ;
133 for(fEmcFirst = fEmcLast; (fEmcLast < totalEmc) &&
134 ((dynamic_cast<AliPHOSRecPoint *>(emcRecPoints->At(fEmcLast)))->GetPHOSMod() == fModule );
138 Int_t totalCpv = cpvRecPoints->GetEntriesFast() ;
140 for(fCpvFirst = fCpvLast; (fCpvLast < totalCpv) &&
141 ((dynamic_cast<AliPHOSRecPoint *>(cpvRecPoints->At(fCpvLast)))->GetPHOSMod() == fModule );
146 //____________________________________________________________________________
147 Float_t AliPHOSTrackSegmentMakerv1::GetDistanceInPHOSPlane(AliPHOSEmcRecPoint * emcClu,AliPHOSRecPoint * cpvClu, Bool_t &toofar)const
149 // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
150 // Clusters are sorted in "rows" and "columns" of width 1 cm
152 Float_t delta = 1 ; // Width of the rows in sorting of RecPoints (in cm)
153 // if you change this value, change it as well in xxxRecPoint::Compare()
159 emcClu->GetLocalPosition(vecEmc) ;
160 cpvClu->GetLocalPosition(vecCpv) ;
162 if(emcClu->GetPHOSMod() == cpvClu->GetPHOSMod()){
163 if(vecCpv.X() <= vecEmc.X() + fR0 + 2*delta ){
165 vecCpv = vecCpv - vecEmc ;
169 } // if xPpsd >= xEmc + ...
182 //____________________________________________________________________________
183 void AliPHOSTrackSegmentMakerv1::Init()
185 // Make all memory allocations that are not possible in default constructor
187 if ( strcmp(GetTitle(), "") == 0 )
188 SetTitle("galice.root") ;
190 TString branchname = GetName() ;
191 branchname.Remove(branchname.Index(Version())-1) ;
193 AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), branchname) ;
195 cerr << "ERROR: AliPHOSTrackSegmentMakerv1::Init -> Could not obtain the Getter object !" << endl ;
199 fLinkUpArray = new TClonesArray("AliPHOSLink", 1000);
201 //add Task to //YSAlice/tasks/Reconstructioner/PHOS
202 gime->PostTrackSegmentMaker(this) ;
204 // create a folder on the white board //YSAlice/WhiteBoard/RecPoints/PHOS/trackSegmentsName
205 gime->PostTrackSegments(branchname) ;
209 //____________________________________________________________________________
210 void AliPHOSTrackSegmentMakerv1::MakeLinks()const
212 // Finds distances (links) between all EMC and PPSD clusters,
213 // which are not further apart from each other than fR0
214 // and sort them in accordance with this distance
216 TString taskName(GetName()) ;
217 taskName.Remove(taskName.Index(Version())-1) ;
218 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
219 TObjArray * emcRecPoints = gime->EmcRecPoints(taskName) ;
220 TObjArray * cpvRecPoints = gime->CpvRecPoints(taskName) ;
222 fLinkUpArray->Clear() ;
224 AliPHOSRecPoint * cpv ;
225 AliPHOSEmcRecPoint * emcclu ;
230 for(iEmcRP = fEmcFirst; iEmcRP < fEmcLast; iEmcRP++ ) {
231 emcclu = dynamic_cast<AliPHOSEmcRecPoint *>(emcRecPoints->At(iEmcRP)) ;
235 for(iCpv = fCpvFirst; iCpv < fCpvLast;iCpv++ ) {
237 cpv = dynamic_cast<AliPHOSRecPoint *>(cpvRecPoints->At(iCpv)) ;
238 Float_t r = GetDistanceInPHOSPlane(emcclu, cpv, toofar) ;
243 new ((*fLinkUpArray)[iLinkUp++]) AliPHOSLink(r, iEmcRP, iCpv) ;
248 fLinkUpArray->Sort() ; //first links with smallest distances
251 //____________________________________________________________________________
252 void AliPHOSTrackSegmentMakerv1::MakePairs()
254 // Using the previously made list of "links", we found the smallest link - i.e.
255 // link with the least distance between EMC and CPV and pointing to still
256 // unassigned RecParticles. We assign these RecPoints to TrackSegment and
257 // remove them from the list of "unassigned".
259 TString taskName(GetName()) ;
260 taskName.Remove(taskName.Index(Version())-1) ;
262 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
263 TObjArray * emcRecPoints = gime->EmcRecPoints(taskName) ;
264 TObjArray * cpvRecPoints = gime->CpvRecPoints(taskName) ;
265 TClonesArray * trackSegments = gime->TrackSegments(taskName) ;
267 //Make arrays to mark clusters already chosen
268 Int_t * emcExist = 0;
269 if(fEmcLast > fEmcFirst)
270 emcExist = new Int_t[fEmcLast-fEmcFirst] ;
273 for(index = 0; index <fEmcLast-fEmcFirst; index ++)
274 emcExist[index] = 1 ;
276 Bool_t * cpvExist = 0;
277 if(fCpvLast > fCpvFirst)
278 cpvExist = new Bool_t[fCpvLast-fCpvFirst] ;
279 for(index = 0; index <fCpvLast-fCpvFirst; index ++)
280 cpvExist[index] = kTRUE ;
283 // Finds the smallest links and makes pairs of CPV and EMC clusters with smallest distance
284 TIter nextUp(fLinkUpArray) ;
286 AliPHOSLink * linkUp ;
288 AliPHOSRecPoint * nullpointer = 0 ;
290 while ( (linkUp = static_cast<AliPHOSLink *>(nextUp()) ) ){
292 if(emcExist[linkUp->GetEmc()-fEmcFirst] != -1){ //without ppsd Up yet
294 if(cpvExist[linkUp->GetPpsd()-fCpvFirst]){ //CPV still exist
296 new ((* trackSegments)[fNTrackSegments])
297 AliPHOSTrackSegment(dynamic_cast<AliPHOSEmcRecPoint *>(emcRecPoints->At(linkUp->GetEmc())) ,
298 dynamic_cast<AliPHOSRecPoint *>(cpvRecPoints->At(linkUp->GetPpsd()))) ;
299 (dynamic_cast<AliPHOSTrackSegment *>(trackSegments->At(fNTrackSegments)))->SetIndexInList(fNTrackSegments);
302 emcExist[linkUp->GetEmc()-fEmcFirst] = -1 ; //Mark emc that Cpv was found
303 //mark CPV recpoint as already used
304 cpvExist[linkUp->GetPpsd()-fCpvFirst] = kFALSE ;
305 } //if ppsdUp still exist
309 //look through emc recPoints left without CPV/PPSD
310 if(emcExist){ //if there is emc rec point
312 for(iEmcRP = 0; iEmcRP < fEmcLast-fEmcFirst ; iEmcRP++ ){
313 if(emcExist[iEmcRP] > 0 ){
314 new ((*trackSegments)[fNTrackSegments])
315 AliPHOSTrackSegment(dynamic_cast<AliPHOSEmcRecPoint *>(emcRecPoints->At(iEmcRP+fEmcFirst)),
317 (dynamic_cast<AliPHOSTrackSegment *>(trackSegments->At(fNTrackSegments)))->SetIndexInList(fNTrackSegments);
325 //____________________________________________________________________________
326 void AliPHOSTrackSegmentMakerv1::Exec(Option_t * option)
330 if( strcmp(GetName(), "")== 0 )
333 if(strstr(option,"tim"))
334 gBenchmark->Start("PHOSTSMaker");
336 if(strstr(option,"print")) {
341 gAlice->GetEvent(0) ;
342 //check, if the branch with name of this" already exits?
343 TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeR()->GetListOfBranches()) ;
345 TBranch * branch = 0 ;
346 Bool_t phostsfound = kFALSE, tracksegmentmakerfound = kFALSE ;
348 TString branchname = GetName() ;
349 branchname.Remove(branchname.Index(Version())-1) ;
351 while ( (branch = static_cast<TBranch*>(next())) && (!phostsfound || !tracksegmentmakerfound) ) {
352 if ( (strcmp(branch->GetName(), "PHOSTS")==0) && (strcmp(branch->GetTitle(), branchname.Data())==0) )
353 phostsfound = kTRUE ;
355 else if ( (strcmp(branch->GetName(), "AliPHOSTrackSegmentMaker")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
356 tracksegmentmakerfound = kTRUE ;
359 if ( phostsfound || tracksegmentmakerfound ) {
360 cerr << "WARNING: AliPHOSTrackSegmentMakerv1::Exec -> TrackSegments and/or TrackSegmentMaker branch with name "
361 << branchname.Data() << " already exits" << endl ;
365 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
366 const AliPHOSGeometry * geom = gime->PHOSGeometry() ;
367 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
370 for(ievent = 0; ievent < nevents; ievent++){
372 gime->Event(ievent,"R") ;
373 //Make some initializations
374 fNTrackSegments = 0 ;
379 gime->TrackSegments(branchname)->Clear() ;
381 // if(!ReadRecPoints(ievent)) continue; //reads RecPoints for event ievent
383 for(fModule = 1; fModule <= geom->GetNModules() ; fModule++ ){
393 WriteTrackSegments(ievent) ;
395 if(strstr(option,"deb"))
396 PrintTrackSegments(option) ;
398 //increment the total number of track segments per run
399 fTrackSegmentsInRun += gime->TrackSegments()->GetEntriesFast() ;
403 if(strstr(option,"tim")){
404 gBenchmark->Stop("PHOSTSMaker");
405 cout << "AliPHOSTSMaker:" << endl ;
406 cout << " took " << gBenchmark->GetCpuTime("PHOSTSMaker") << " seconds for making TS "
407 << gBenchmark->GetCpuTime("PHOSTSMaker")/nevents << " seconds per event " << endl ;
413 //____________________________________________________________________________
414 void AliPHOSTrackSegmentMakerv1::Print(Option_t * option)const
416 // Print TrackSegmentMaker parameters
418 if( strcmp(GetName(), "") != 0 ) {
419 cout << "======== AliPHOSTrackSegmentMakerv1 ========" << endl ;
420 cout << "Making Track segments "<< endl ;
421 cout << " Headers file: " << fHeaderFileName.Data() << endl ;
422 cout << " RecPoints branch file name: " << fRecPointsBranchTitle.Data() << endl ;
423 cout << " TrackSegments Branch file name: " << fTrackSegmentsBranchTitle.Data() << endl ;
424 cout << "with parameters: " << endl ;
425 cout << " Maximal EMC - CPV (PPSD) distance (cm)" << fR0 << endl ;
426 cout << "============================================" << endl ;
429 cout << "AliPHOSTrackSegmentMakerv1 not initialized " << endl ;
432 //____________________________________________________________________________
433 void AliPHOSTrackSegmentMakerv1::WriteTrackSegments(Int_t event)
435 // Writes found TrackSegments to TreeR. Creates branches
436 // "PHOSTS" and "AliPHOSTrackSegmentMaker" with the same title.
437 // In the former branch found TrackSegments are stored, while
438 // in the latter all parameters, with which TS were made.
439 // ROOT does not allow overwriting existing branches, therefore
440 // first we check, if branches with the same title already exist.
441 // If yes - exits without writing.
443 AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
445 TString branchName(GetName() ) ;
446 branchName.Remove(branchName.Index(Version())-1) ;
448 TClonesArray * trackSegments = gime->TrackSegments(branchName) ;
449 trackSegments->Expand(trackSegments->GetEntriesFast()) ;
451 //Make branch in TreeR for TrackSegments
453 if(gSystem->Getenv("CONFIG_SPLIT_FILE")!=0){ //generating file name
454 filename = new char[strlen(gAlice->GetBaseFile())+20] ;
455 sprintf(filename,"%s/PHOS.Reco.root",gAlice->GetBaseFile()) ;
458 TDirectory *cwd = gDirectory;
461 Int_t bufferSize = 32000 ;
462 TBranch * tsBranch = gAlice->TreeR()->Branch("PHOSTS",&trackSegments,bufferSize);
463 tsBranch->SetTitle(branchName);
465 tsBranch->SetFile(filename);
466 TIter next( tsBranch->GetListOfBranches());
468 while ((sb=static_cast<TBranch*>(next()))) {
469 sb->SetFile(filename);
475 Int_t splitlevel = 0 ;
476 AliPHOSTrackSegmentMakerv1 * ts = this ;
477 TBranch * tsMakerBranch = gAlice->TreeR()->Branch("AliPHOSTrackSegmentMaker","AliPHOSTrackSegmentMakerv1",
478 &ts,bufferSize,splitlevel);
479 tsMakerBranch->SetTitle(branchName);
481 tsMakerBranch->SetFile(filename);
482 TIter next( tsMakerBranch->GetListOfBranches());
484 while ((sb=static_cast<TBranch*>(next()))) {
485 sb->SetFile(filename);
491 tsMakerBranch->Fill() ;
493 gAlice->TreeR()->Write(0,kOverwrite) ;
498 //____________________________________________________________________________
499 void AliPHOSTrackSegmentMakerv1::PrintTrackSegments(Option_t * option)
501 // option deb - prints # of found TrackSegments
502 // option deb all - prints as well indexed of found RecParticles assigned to the TS
503 TString taskName(GetName()) ;
504 taskName.Remove(taskName.Index(Version())-1) ;
506 TClonesArray * trackSegments = AliPHOSGetter::GetInstance()->TrackSegments(taskName) ;
509 cout << "AliPHOSTrackSegmentMakerv1: event "<<gAlice->GetEvNumber() << endl ;
510 cout << " Found " << trackSegments->GetEntriesFast() << " trackSegments " << endl ;
512 if(strstr(option,"all")) { // printing found TS
513 cout << "TrackSegment # " << " EMC RP# " << " CPV RP# " << endl ;
516 for (index = 0 ; index <trackSegments->GetEntriesFast() ; index++) {
517 AliPHOSTrackSegment * ts = (AliPHOSTrackSegment * )trackSegments->At(index) ;
518 cout<<" "<< setw(4) << ts->GetIndexInList() << " "
519 <<setw(4) << ts->GetEmcIndex()<< " "
520 <<setw(4) << ts->GetCpvIndex()<< " " << endl ;
523 cout << "-------------------------------------------------------"<< endl ;