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 *
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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", "tracksegmentsname", "recpointsname")
36 // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
37 // // reads gAlice from header file "galice.root", uses recpoints stored in the branch names "recpointsname" (default = "Default")
38 // // and saves recpoints in branch named "tracksegmentsname" (default = "recpointsname")
39 // root [1] t->ExecuteTask()
40 // root [2] t->SetMaxEmcPpsdDistance(5)
41 // root [3] t->SetTrackSegmentsBranch("max distance 5 cm")
42 // root [4] t->ExecuteTask("deb all time")
44 //*-- Author: Dmitri Peressounko (RRC Ki & SUBATECH) & Yves Schutz (SUBATECH)
47 // --- ROOT system ---
53 #include "TBenchmark.h"
54 // --- Standard library ---
59 // --- AliRoot header files ---
61 #include "AliPHOSTrackSegmentMakerv1.h"
62 #include "AliPHOSClusterizerv1.h"
63 #include "AliPHOSTrackSegment.h"
64 #include "AliPHOSCpvRecPoint.h"
65 #include "AliPHOSLink.h"
66 #include "AliPHOSGetter.h"
70 ClassImp( AliPHOSTrackSegmentMakerv1)
73 //____________________________________________________________________________
74 AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1() : AliPHOSTrackSegmentMaker()
76 // default ctor (to be used mainly by Streamer)
79 fHeaderFileName = "" ;
80 fRecPointsBranchTitle = "" ;
81 fTrackSegmentsBranchTitle = "" ;
84 fTrackSegmentsInRun = 0 ;
86 fDefaultInit = kTRUE ;
89 //____________________________________________________________________________
90 AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1(const char * headerFile, const char * name, const char * from) : AliPHOSTrackSegmentMaker(headerFile, name)
95 fHeaderFileName = GetTitle() ;
96 fRecPointsBranchTitle = GetName() ;
97 fTrackSegmentsBranchTitle = GetName() ;
98 fTrackSegmentsInRun = 0 ;
106 fDefaultInit = kFALSE ;
110 //____________________________________________________________________________
111 AliPHOSTrackSegmentMakerv1::~AliPHOSTrackSegmentMakerv1()
114 // fDefaultInit = kTRUE if TrackSegmentMaker created by default ctor (to get just the parameters)
117 delete fLinkUpArray ;
119 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
121 // remove the task from the folder list
122 gime->RemoveTask("T",GetName()) ;
123 TString name(GetName()) ;
124 name.ReplaceAll("tsm", "clu") ;
125 gime->RemoveTask("C",name) ;
127 // remove the data from the folder list
129 name.Remove(name.Index(":")) ;
130 gime->RemoveObjects("RE", name) ; // EMCARecPoints
131 gime->RemoveObjects("RC", name) ; // CPVRecPoints
132 gime->RemoveObjects("T", name) ; // TrackSegments
142 //____________________________________________________________________________
143 const TString AliPHOSTrackSegmentMakerv1::BranchName() const
145 TString branchName(GetName() ) ;
146 branchName.Remove(branchName.Index(Version())-1) ;
150 //____________________________________________________________________________
151 void AliPHOSTrackSegmentMakerv1::FillOneModule()
153 // Finds first and last indexes between which
154 // clusters from one PHOS module are
156 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
157 TObjArray * emcRecPoints = gime->EmcRecPoints(fFrom) ;
158 TObjArray * cpvRecPoints = gime->CpvRecPoints(fFrom) ;
161 Int_t totalEmc = emcRecPoints->GetEntriesFast() ;
162 for(fEmcFirst = fEmcLast; (fEmcLast < totalEmc) &&
163 ((dynamic_cast<AliPHOSRecPoint *>(emcRecPoints->At(fEmcLast)))->GetPHOSMod() == fModule );
167 Int_t totalCpv = cpvRecPoints->GetEntriesFast() ;
169 for(fCpvFirst = fCpvLast; (fCpvLast < totalCpv) &&
170 ((dynamic_cast<AliPHOSRecPoint *>(cpvRecPoints->At(fCpvLast)))->GetPHOSMod() == fModule );
175 //____________________________________________________________________________
176 Float_t AliPHOSTrackSegmentMakerv1::GetDistanceInPHOSPlane(AliPHOSEmcRecPoint * emcClu,AliPHOSRecPoint * cpvClu, Bool_t &toofar)const
178 // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
179 // Clusters are sorted in "rows" and "columns" of width 1 cm
181 Float_t delta = 1 ; // Width of the rows in sorting of RecPoints (in cm)
182 // if you change this value, change it as well in xxxRecPoint::Compare()
188 emcClu->GetLocalPosition(vecEmc) ;
189 cpvClu->GetLocalPosition(vecCpv) ;
191 if(emcClu->GetPHOSMod() == cpvClu->GetPHOSMod()){
192 if(vecCpv.X() <= vecEmc.X() + fR0 + 2*delta ){
194 vecCpv = vecCpv - vecEmc ;
198 } // if xPpsd >= xEmc + ...
211 //____________________________________________________________________________
212 void AliPHOSTrackSegmentMakerv1::Init()
214 // Make all memory allocations that are not possible in default constructor
216 if ( strcmp(GetTitle(), "") == 0 )
217 SetTitle("galice.root") ;
219 AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), fFrom.Data()) ;
221 cerr << "ERROR: AliPHOSTrackSegmentMakerv1::Init -> Could not obtain the Getter object !" << endl ;
225 fLinkUpArray = new TClonesArray("AliPHOSLink", 1000);
227 //add Task to //YSAlice/tasks/Reconstructioner/PHOS
228 gime->PostTrackSegmentMaker(this) ;
230 // create a folder on the white board //YSAlice/WhiteBoard/RecPoints/PHOS/trackSegmentsName
231 gime->PostTrackSegments(BranchName()) ;
235 //____________________________________________________________________________
236 void AliPHOSTrackSegmentMakerv1::InitParameters()
244 TString tsmName( GetName()) ;
245 if (tsmName.IsNull() )
246 tsmName = "Default" ;
247 tsmName.Append(":") ;
248 tsmName.Append(Version()) ;
253 //____________________________________________________________________________
254 void AliPHOSTrackSegmentMakerv1::MakeLinks()const
256 // Finds distances (links) between all EMC and PPSD clusters,
257 // which are not further apart from each other than fR0
258 // and sort them in accordance with this distance
260 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
261 TObjArray * emcRecPoints = gime->EmcRecPoints(fFrom) ;
262 TObjArray * cpvRecPoints = gime->CpvRecPoints(fFrom) ;
264 fLinkUpArray->Clear() ;
266 AliPHOSRecPoint * cpv ;
267 AliPHOSEmcRecPoint * emcclu ;
272 for(iEmcRP = fEmcFirst; iEmcRP < fEmcLast; iEmcRP++ ) {
273 emcclu = dynamic_cast<AliPHOSEmcRecPoint *>(emcRecPoints->At(iEmcRP)) ;
277 for(iCpv = fCpvFirst; iCpv < fCpvLast;iCpv++ ) {
279 cpv = dynamic_cast<AliPHOSRecPoint *>(cpvRecPoints->At(iCpv)) ;
280 Float_t r = GetDistanceInPHOSPlane(emcclu, cpv, toofar) ;
285 new ((*fLinkUpArray)[iLinkUp++]) AliPHOSLink(r, iEmcRP, iCpv) ;
290 fLinkUpArray->Sort() ; //first links with smallest distances
293 //____________________________________________________________________________
294 void AliPHOSTrackSegmentMakerv1::MakePairs()
296 // Using the previously made list of "links", we found the smallest link - i.e.
297 // link with the least distance between EMC and CPV and pointing to still
298 // unassigned RecParticles. We assign these RecPoints to TrackSegment and
299 // remove them from the list of "unassigned".
301 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
302 TObjArray * emcRecPoints = gime->EmcRecPoints(fFrom) ;
303 TObjArray * cpvRecPoints = gime->CpvRecPoints(fFrom) ;
304 TClonesArray * trackSegments = gime->TrackSegments(BranchName()) ;
306 //Make arrays to mark clusters already chosen
307 Int_t * emcExist = 0;
308 if(fEmcLast > fEmcFirst)
309 emcExist = new Int_t[fEmcLast-fEmcFirst] ;
312 for(index = 0; index <fEmcLast-fEmcFirst; index ++)
313 emcExist[index] = 1 ;
315 Bool_t * cpvExist = 0;
316 if(fCpvLast > fCpvFirst)
317 cpvExist = new Bool_t[fCpvLast-fCpvFirst] ;
318 for(index = 0; index <fCpvLast-fCpvFirst; index ++)
319 cpvExist[index] = kTRUE ;
322 // Finds the smallest links and makes pairs of CPV and EMC clusters with smallest distance
323 TIter nextUp(fLinkUpArray) ;
325 AliPHOSLink * linkUp ;
327 AliPHOSRecPoint * nullpointer = 0 ;
329 while ( (linkUp = static_cast<AliPHOSLink *>(nextUp()) ) ){
331 if(emcExist[linkUp->GetEmc()-fEmcFirst] != -1){ //without ppsd Up yet
333 if(cpvExist[linkUp->GetPpsd()-fCpvFirst]){ //CPV still exist
335 new ((* trackSegments)[fNTrackSegments])
336 AliPHOSTrackSegment(dynamic_cast<AliPHOSEmcRecPoint *>(emcRecPoints->At(linkUp->GetEmc())) ,
337 dynamic_cast<AliPHOSRecPoint *>(cpvRecPoints->At(linkUp->GetPpsd()))) ;
338 (dynamic_cast<AliPHOSTrackSegment *>(trackSegments->At(fNTrackSegments)))->SetIndexInList(fNTrackSegments);
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 ((*trackSegments)[fNTrackSegments])
354 AliPHOSTrackSegment(dynamic_cast<AliPHOSEmcRecPoint *>(emcRecPoints->At(iEmcRP+fEmcFirst)),
356 (dynamic_cast<AliPHOSTrackSegment *>(trackSegments->At(fNTrackSegments)))->SetIndexInList(fNTrackSegments);
365 //____________________________________________________________________________
366 void AliPHOSTrackSegmentMakerv1::Exec(Option_t * option)
370 if( strcmp(GetName(), "")== 0 )
373 if(strstr(option,"tim"))
374 gBenchmark->Start("PHOSTSMaker");
376 if(strstr(option,"print")) {
381 gAlice->GetEvent(0) ;
382 //check, if the branch with name of this" already exits?
383 if (gAlice->TreeR()) {
384 TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeR()->GetListOfBranches()) ;
386 TBranch * branch = 0 ;
387 Bool_t phostsfound = kFALSE, tracksegmentmakerfound = kFALSE ;
389 TString branchname = GetName() ;
390 branchname.Remove(branchname.Index(Version())-1) ;
392 while ( (branch = static_cast<TBranch*>(next())) && (!phostsfound || !tracksegmentmakerfound) ) {
393 if ( (strcmp(branch->GetName(), "PHOSTS")==0) && (strcmp(branch->GetTitle(), branchname.Data())==0) )
394 phostsfound = kTRUE ;
396 else if ( (strcmp(branch->GetName(), "AliPHOSTrackSegmentMaker")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
397 tracksegmentmakerfound = kTRUE ;
400 if ( phostsfound || tracksegmentmakerfound ) {
401 cerr << "WARNING: AliPHOSTrackSegmentMakerv1::Exec -> TrackSegments and/or TrackSegmentMaker branch with name "
402 << branchname.Data() << " already exits" << endl ;
407 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
408 const AliPHOSGeometry * geom = gime->PHOSGeometry() ;
409 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
412 for(ievent = 0; ievent < nevents; ievent++){
414 gime->Event(ievent,"R") ;
415 //Make some initializations
416 fNTrackSegments = 0 ;
421 gime->TrackSegments(BranchName())->Clear() ;
423 // if(!ReadRecPoints(ievent)) continue; //reads RecPoints for event ievent
425 for(fModule = 1; fModule <= geom->GetNModules() ; fModule++ ){
435 WriteTrackSegments(ievent) ;
437 if(strstr(option,"deb"))
438 PrintTrackSegments(option) ;
440 //increment the total number of track segments per run
441 fTrackSegmentsInRun += gime->TrackSegments(BranchName())->GetEntriesFast() ;
445 if(strstr(option,"tim")){
446 gBenchmark->Stop("PHOSTSMaker");
447 cout << "AliPHOSTSMaker:" << endl ;
448 cout << " took " << gBenchmark->GetCpuTime("PHOSTSMaker") << " seconds for making TS "
449 << gBenchmark->GetCpuTime("PHOSTSMaker")/nevents << " seconds per event " << endl ;
455 //____________________________________________________________________________
456 void AliPHOSTrackSegmentMakerv1::Print(Option_t * option)const
458 // Print TrackSegmentMaker parameters
460 if( strcmp(GetName(), "") != 0 ) {
461 cout << "======== AliPHOSTrackSegmentMakerv1 ========" << endl ;
462 cout << "Making Track segments "<< endl ;
463 cout << " Headers file: " << fHeaderFileName.Data() << endl ;
464 cout << " RecPoints branch file name: " << fRecPointsBranchTitle.Data() << endl ;
465 cout << " TrackSegments Branch file name: " << fTrackSegmentsBranchTitle.Data() << endl ;
466 cout << "with parameters: " << endl ;
467 cout << " Maximal EMC - CPV (PPSD) distance (cm)" << fR0 << endl ;
468 cout << "============================================" << endl ;
471 cout << "AliPHOSTrackSegmentMakerv1 not initialized " << endl ;
474 //____________________________________________________________________________
475 void AliPHOSTrackSegmentMakerv1::WriteTrackSegments(Int_t event)
477 // Writes found TrackSegments to TreeR. Creates branches
478 // "PHOSTS" and "AliPHOSTrackSegmentMaker" with the same title.
479 // In the former branch found TrackSegments are stored, while
480 // in the latter all parameters, with which TS were made.
481 // ROOT does not allow overwriting existing branches, therefore
482 // first we check, if branches with the same title already exist.
483 // If yes - exits without writing.
485 AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
487 TClonesArray * trackSegments = gime->TrackSegments(BranchName()) ;
488 trackSegments->Expand(trackSegments->GetEntriesFast()) ;
489 TTree * treeR = gAlice->TreeR();
492 gAlice->MakeTree("R", fSplitFile);
493 treeR = gAlice->TreeR();
496 Int_t bufferSize = 32000 ;
497 TBranch * tsBranch = treeR->Branch("PHOSTS",&trackSegments,bufferSize);
498 tsBranch->SetTitle(BranchName());
501 Int_t splitlevel = 0 ;
502 AliPHOSTrackSegmentMakerv1 * ts = this ;
503 TBranch * tsMakerBranch = treeR->Branch("AliPHOSTrackSegmentMaker","AliPHOSTrackSegmentMakerv1",
504 &ts,bufferSize,splitlevel);
505 tsMakerBranch->SetTitle(BranchName());
508 tsMakerBranch->Fill() ;
510 treeR->AutoSave() ; //Write(0,kOverwrite) ;
515 //____________________________________________________________________________
516 void AliPHOSTrackSegmentMakerv1::PrintTrackSegments(Option_t * option)
518 // option deb - prints # of found TrackSegments
519 // option deb all - prints as well indexed of found RecParticles assigned to the TS
520 TString taskName(GetName()) ;
521 taskName.Remove(taskName.Index(Version())-1) ;
523 TClonesArray * trackSegments = AliPHOSGetter::GetInstance()->TrackSegments(taskName) ;
526 cout << "AliPHOSTrackSegmentMakerv1: event "<<gAlice->GetEvNumber() << endl ;
527 cout << " Found " << trackSegments->GetEntriesFast() << " trackSegments " << endl ;
529 if(strstr(option,"all")) { // printing found TS
530 cout << "TrackSegment # " << " EMC RP# " << " CPV RP# " << endl ;
533 for (index = 0 ; index <trackSegments->GetEntriesFast() ; index++) {
534 AliPHOSTrackSegment * ts = (AliPHOSTrackSegment * )trackSegments->At(index) ;
535 cout<<" "<< setw(4) << ts->GetIndexInList() << " "
536 <<setw(4) << ts->GetEmcIndex()<< " "
537 <<setw(4) << ts->GetCpvIndex()<< " " << endl ;
540 cout << "-------------------------------------------------------"<< endl ;