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);
326 //____________________________________________________________________________
327 void AliPHOSTrackSegmentMakerv1::Exec(Option_t * option)
331 if( strcmp(GetName(), "")== 0 )
334 if(strstr(option,"tim"))
335 gBenchmark->Start("PHOSTSMaker");
337 if(strstr(option,"print")) {
342 gAlice->GetEvent(0) ;
343 //check, if the branch with name of this" already exits?
344 TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeR()->GetListOfBranches()) ;
346 TBranch * branch = 0 ;
347 Bool_t phostsfound = kFALSE, tracksegmentmakerfound = kFALSE ;
349 TString branchname = GetName() ;
350 branchname.Remove(branchname.Index(Version())-1) ;
352 while ( (branch = static_cast<TBranch*>(next())) && (!phostsfound || !tracksegmentmakerfound) ) {
353 if ( (strcmp(branch->GetName(), "PHOSTS")==0) && (strcmp(branch->GetTitle(), branchname.Data())==0) )
354 phostsfound = kTRUE ;
356 else if ( (strcmp(branch->GetName(), "AliPHOSTrackSegmentMaker")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
357 tracksegmentmakerfound = kTRUE ;
360 if ( phostsfound || tracksegmentmakerfound ) {
361 cerr << "WARNING: AliPHOSTrackSegmentMakerv1::Exec -> TrackSegments and/or TrackSegmentMaker branch with name "
362 << branchname.Data() << " already exits" << endl ;
366 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
367 const AliPHOSGeometry * geom = gime->PHOSGeometry() ;
368 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
371 for(ievent = 0; ievent < nevents; ievent++){
373 gime->Event(ievent,"R") ;
374 //Make some initializations
375 fNTrackSegments = 0 ;
380 gime->TrackSegments(branchname)->Clear() ;
382 // if(!ReadRecPoints(ievent)) continue; //reads RecPoints for event ievent
384 for(fModule = 1; fModule <= geom->GetNModules() ; fModule++ ){
394 WriteTrackSegments(ievent) ;
396 if(strstr(option,"deb"))
397 PrintTrackSegments(option) ;
399 //increment the total number of track segments per run
400 fTrackSegmentsInRun += gime->TrackSegments()->GetEntriesFast() ;
404 if(strstr(option,"tim")){
405 gBenchmark->Stop("PHOSTSMaker");
406 cout << "AliPHOSTSMaker:" << endl ;
407 cout << " took " << gBenchmark->GetCpuTime("PHOSTSMaker") << " seconds for making TS "
408 << gBenchmark->GetCpuTime("PHOSTSMaker")/nevents << " seconds per event " << endl ;
414 //____________________________________________________________________________
415 void AliPHOSTrackSegmentMakerv1::Print(Option_t * option)const
417 // Print TrackSegmentMaker parameters
419 if( strcmp(GetName(), "") != 0 ) {
420 cout << "======== AliPHOSTrackSegmentMakerv1 ========" << endl ;
421 cout << "Making Track segments "<< endl ;
422 cout << " Headers file: " << fHeaderFileName.Data() << endl ;
423 cout << " RecPoints branch file name: " << fRecPointsBranchTitle.Data() << endl ;
424 cout << " TrackSegments Branch file name: " << fTrackSegmentsBranchTitle.Data() << endl ;
425 cout << "with parameters: " << endl ;
426 cout << " Maximal EMC - CPV (PPSD) distance (cm)" << fR0 << endl ;
427 cout << "============================================" << endl ;
430 cout << "AliPHOSTrackSegmentMakerv1 not initialized " << endl ;
433 //____________________________________________________________________________
434 void AliPHOSTrackSegmentMakerv1::WriteTrackSegments(Int_t event)
436 // Writes found TrackSegments to TreeR. Creates branches
437 // "PHOSTS" and "AliPHOSTrackSegmentMaker" with the same title.
438 // In the former branch found TrackSegments are stored, while
439 // in the latter all parameters, with which TS were made.
440 // ROOT does not allow overwriting existing branches, therefore
441 // first we check, if branches with the same title already exist.
442 // If yes - exits without writing.
444 AliPHOSGetter *gime = AliPHOSGetter::GetInstance() ;
446 TString branchName(GetName() ) ;
447 branchName.Remove(branchName.Index(Version())-1) ;
449 TClonesArray * trackSegments = gime->TrackSegments(branchName) ;
450 trackSegments->Expand(trackSegments->GetEntriesFast()) ;
452 //Make branch in TreeR for TrackSegments
454 if(gSystem->Getenv("CONFIG_SPLIT_FILE")!=0){ //generating file name
455 filename = new char[strlen(gAlice->GetBaseFile())+20] ;
456 sprintf(filename,"%s/PHOS.Reco.root",gAlice->GetBaseFile()) ;
459 TDirectory *cwd = gDirectory;
462 Int_t bufferSize = 32000 ;
463 TBranch * tsBranch = gAlice->TreeR()->Branch("PHOSTS",&trackSegments,bufferSize);
464 tsBranch->SetTitle(branchName);
466 tsBranch->SetFile(filename);
467 TIter next( tsBranch->GetListOfBranches());
469 while ((sb=static_cast<TBranch*>(next()))) {
470 sb->SetFile(filename);
476 Int_t splitlevel = 0 ;
477 AliPHOSTrackSegmentMakerv1 * ts = this ;
478 TBranch * tsMakerBranch = gAlice->TreeR()->Branch("AliPHOSTrackSegmentMaker","AliPHOSTrackSegmentMakerv1",
479 &ts,bufferSize,splitlevel);
480 tsMakerBranch->SetTitle(branchName);
482 tsMakerBranch->SetFile(filename);
483 TIter next( tsMakerBranch->GetListOfBranches());
485 while ((sb=static_cast<TBranch*>(next()))) {
486 sb->SetFile(filename);
492 tsMakerBranch->Fill() ;
494 gAlice->TreeR()->Write(0,kOverwrite) ;
500 //____________________________________________________________________________
501 void AliPHOSTrackSegmentMakerv1::PrintTrackSegments(Option_t * option)
503 // option deb - prints # of found TrackSegments
504 // option deb all - prints as well indexed of found RecParticles assigned to the TS
505 TString taskName(GetName()) ;
506 taskName.Remove(taskName.Index(Version())-1) ;
508 TClonesArray * trackSegments = AliPHOSGetter::GetInstance()->TrackSegments(taskName) ;
511 cout << "AliPHOSTrackSegmentMakerv1: event "<<gAlice->GetEvNumber() << endl ;
512 cout << " Found " << trackSegments->GetEntriesFast() << " trackSegments " << endl ;
514 if(strstr(option,"all")) { // printing found TS
515 cout << "TrackSegment # " << " EMC RP# " << " CPV RP# " << endl ;
518 for (index = 0 ; index <trackSegments->GetEntriesFast() ; index++) {
519 AliPHOSTrackSegment * ts = (AliPHOSTrackSegment * )trackSegments->At(index) ;
520 cout<<" "<< setw(4) << ts->GetIndexInList() << " "
521 <<setw(4) << ts->GetEmcIndex()<< " "
522 <<setw(4) << ts->GetCpvIndex()<< " " << endl ;
525 cout << "-------------------------------------------------------"<< endl ;