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Simplification for Fast Simulator
[u/mrichter/AliRoot.git] / PHOS / AliPHOSPIDv1.cxx
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6ad0bfa0 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
b2a60966 16/* $Id$ */
17
6ad0bfa0 18//_________________________________________________________________________
b2a60966 19// Implementation version v1 of the PHOS particle identifier
7acf6008 20// Particle identification based on the
21// - CPV information,
22// - Preshower information (in MIX or GPS2 geometries)
23// - shower width.
b2a60966 24
7acf6008 25// CPV or Preshower cluster should be clother in PHOS plane than fCpvEmcDistance (in cm).
26// This variable can be set by method SetCpvtoEmcDistanceCut(Float_t cut)
27//
28// One can set desirable ID method by the function SetIdentificationMethod(option).
29// Now the following options can be used together or separately :
30// - "disp": use dispersion cut on shower width
31// (width can be set by method SetDispersionCut(Float_t cut)
32// - "ell" : use cut on the axis of the ellipse, drown around shower
33// (this cut can be changed by SetShowerProfileCut(char* formula),
34// where formula - any function of two variables f(lambda[0],lambda[1]).
35// Shower is considered as EM if f() > 0 )
36// One can visualize current cuts calling method PlotDispersionCuts().
37//
38// Below we present usercase:
39// root [0] AliPHOSPIDv1 * p1 = new AliPHOSPIDv1("galice.root")
40// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
41// root [1] p1->SetIdentificationMethod("disp ellipse")
42// root [2] p1->ExecuteTask()
43// root [3] AliPHOSPIDv1 * p2 = new AliPHOSPIDv1("galice1.root","ts1")
44// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
45// // reading headers from file galice1.root and TrackSegments
46// // with title "ts1"
47// root [4] p2->SetRecParticlesBranch("rp1")
48// // set file name for the branch RecParticles
49// root [5] p2->ExecuteTask("deb all time")
50// // available options
51// // "deb" - prints # of reconstructed particles
52// // "deb all" - prints # and list of RecParticles
53// // "time" - prints benchmarking results
54//
55//*-- Author: Yves Schutz (SUBATECH) & Gines Martinez (SUBATECH) &
56// Dmitri Peressounko (SUBATECH & Kurchatov Institute)
57// Complitely redesined by Dmitri Peressounko, March 2001
6ad0bfa0 58
59// --- ROOT system ---
7acf6008 60#include "TROOT.h"
61#include "TTree.h"
62#include "TFile.h"
63#include "TF2.h"
64#include "TFormula.h"
65#include "TCanvas.h"
66#include "TFolder.h"
67#include "TSystem.h"
68#include "TBenchmark.h"
6ad0bfa0 69// --- Standard library ---
70
de9ec31b 71#include <iostream.h>
7acf6008 72#include <iomanip.h>
6ad0bfa0 73
74// --- AliRoot header files ---
75
7acf6008 76#include "AliRun.h"
77#include "AliGenerator.h"
78#include "AliPHOS.h"
26d4b141 79#include "AliPHOSPIDv1.h"
7acf6008 80#include "AliPHOSClusterizerv1.h"
6ad0bfa0 81#include "AliPHOSTrackSegment.h"
7acf6008 82#include "AliPHOSTrackSegmentMakerv1.h"
6ad0bfa0 83#include "AliPHOSRecParticle.h"
84
26d4b141 85ClassImp( AliPHOSPIDv1)
6ad0bfa0 86
1cb7c1ee 87//____________________________________________________________________________
88AliPHOSPIDv1::AliPHOSPIDv1():AliPHOSPID()
89{
7acf6008 90 fIsInitialized = kFALSE ;
91}
92
93//____________________________________________________________________________
94AliPHOSPIDv1::AliPHOSPIDv1(const char * headeFile,const char * tsBranchTitle):AliPHOSPID()
95{
96
97 fHeaderFileName = headeFile ;
98
99 fTSTitle = tsBranchTitle ;
100
101 SetName("AliPHOSPID") ;
102 SetTitle("version1") ;
103
104 TFile * file = (TFile*) gROOT->GetFile(fHeaderFileName.Data() ) ;
105
106 if(file == 0){
107 file = new TFile(fHeaderFileName.Data(),"update") ;
108 gAlice = (AliRun *) file->Get("gAlice") ;
109 }
110
111 AliPHOS * phos = (AliPHOS *) gAlice->GetDetector("PHOS") ;
112 fGeom = AliPHOSGeometry::GetInstance(phos->GetGeometry()->GetName(),phos->GetGeometry()->GetTitle() );
113
114 fTrackSegments = new TClonesArray("AliPHOSTrackSegment",1) ;
115 fTSMaker = 0 ;
116 fEmcRecPoints = new TObjArray(1) ;
117 fCpvRecPoints = new TObjArray(1) ;
118 fClusterizer = 0 ;
119 fRecParticles = new TClonesArray("AliPHOSRecParticle",100) ;
120
121 fFormula = new TFormula("LambdaCuts","(x>1)*(x<3)*(y>0)*(y<x)") ;
122
123 // add Task to //root/Tasks folder
124 TTask * roottasks = (TTask*)gROOT->GetRootFolder()->FindObject("Tasks") ;
125 roottasks->Add(this) ;
126
127 fDispersion = 2.0;
128 fCpvEmcDistance = 3.0 ;
129 fIsInitialized = kTRUE ;
130
131}
132//____________________________________________________________________________
133AliPHOSPIDv1::~AliPHOSPIDv1()
134{
135
136}
137//____________________________________________________________________________
138void AliPHOSPIDv1::Init()
139{
140 if(!fIsInitialized){
141 if(fHeaderFileName.IsNull())
142 fHeaderFileName = "galice.root" ;
143
144 TFile * file = (TFile*) gROOT->GetFile(fHeaderFileName.Data() ) ;
145
146 if(file == 0){
147 file = new TFile(fHeaderFileName.Data(),"update") ;
148 gAlice = (AliRun *) file->Get("gAlice") ;
149 }
150
151 AliPHOS * phos = (AliPHOS *) gAlice->GetDetector("PHOS") ;
152 fGeom = AliPHOSGeometry::GetInstance(phos->GetGeometry()->GetName(),phos->GetGeometry()->GetTitle() );
153
154 fTrackSegments = new TClonesArray("AliPHOSTrackSegment",1) ;
155 fTSMaker = new AliPHOSTrackSegmentMakerv1() ;
156 fEmcRecPoints = new TObjArray(1) ;
157 fCpvRecPoints = new TObjArray(1) ;
158 fClusterizer = new AliPHOSClusterizerv1() ;
159 fRecParticles = new TClonesArray("AliPHOSRecParticle",100) ;
160
161 fFormula = new TFormula("LambdaCuts","(x>1)*(x<2.5)*(y>0)*(y<x)") ;
162
163 // add Task to //root/Tasks folder
164 TTask * roottasks = (TTask*)gROOT->GetRootFolder()->FindObject("Tasks") ;
165 roottasks->Add(this) ;
166
167 fDispersion = 2.0;
168 fCpvEmcDistance = 3.0 ;
169
170 fIsInitialized = kTRUE ;
171 }
172
173
1cb7c1ee 174}
7acf6008 175//____________________________________________________________________________
176Bool_t AliPHOSPIDv1::ReadTrackSegments()
177{
178 //Fist read Track Segment Branch and extract RecPointsBranch from fTSMaker
179
180 fTrackSegments->Clear() ;
181 fEmcRecPoints->Clear() ;
182 fCpvRecPoints->Clear() ;
183 fRecParticles->Clear() ;
184
185 gAlice->GetEvent(fNEvent) ;
186
187 TTree * treeR = gAlice->TreeR() ;
188
189 if(treeR==0){
190 char treeName[20];
191 sprintf(treeName,"TreeR%d",fNEvent);
192 cout << "Error in AliPHOSClusterizerv1 : no "<<treeName << endl ;
193 cout << " Do nothing " << endl ;
194 return kFALSE ;
195 }
196
197 //first read TSMaker branch and extract information about RecPoints Branches
198 TBranch * tsMakerBranch = 0;
199 TBranch * tsBranch = 0;
200
201 TObjArray * branches = treeR->GetListOfBranches() ;
202 Int_t ibranch;
203 Bool_t tsMakerNotFound = kTRUE ;
204 Bool_t tsNotFound = kTRUE ;
205
206 for(ibranch = 0;(ibranch <branches->GetEntries())&&(tsMakerNotFound||tsNotFound);ibranch++){
207 if(tsMakerNotFound){
208 tsMakerBranch=(TBranch *) branches->At(ibranch) ;
209 if( fTSTitle.CompareTo(tsMakerBranch->GetTitle())==0 )
210 if( strcmp(tsMakerBranch->GetName(),"AliPHOSTrackSegmentMaker") == 0)
211 tsMakerNotFound = kFALSE ;
212 }
213 if(tsNotFound){
214 tsBranch=(TBranch *) branches->At(ibranch) ;
215 if( fTSTitle.CompareTo(tsBranch->GetTitle())==0 )
216 if( strcmp(tsBranch->GetName(),"PHOSTS") == 0)
217 tsNotFound = kFALSE ;
218 }
219 }
220
221 if(tsMakerNotFound ||tsNotFound ){
222 cout << "Can't find Branch with TrackSegmentMaker and TrackSegments " ;
223 cout << "Do nothing" <<endl ;
224 return kFALSE ;
225 }
226
227 tsMakerBranch->SetAddress(&fTSMaker) ;
228 tsBranch->SetAddress(&fTrackSegments) ;
229
230 treeR->GetEvent(0) ;
231
232 fRecPointsTitle = fTSMaker->GetRecPointsBranch() ;
1cb7c1ee 233
7acf6008 234 //reading now recponts branches
235 TBranch * emcBranch = 0;
236 TBranch * cpvBranch = 0;
237 TBranch * cluBranch = 0;
238
239 Bool_t emcNotFound = kTRUE ;
240 Bool_t cpvNotFound = kTRUE ;
241 Bool_t cluNotFound = kTRUE ;
242
243 for(ibranch = 0;(ibranch <branches->GetEntries())&&(emcNotFound||cpvNotFound||cluNotFound);ibranch++){
244 if(emcNotFound){
245 emcBranch=(TBranch *) branches->At(ibranch) ;
246 if( fRecPointsTitle.CompareTo(emcBranch->GetTitle())==0 )
247 if( strcmp(emcBranch->GetName(),"PHOSEmcRP") == 0)
248 emcNotFound = kFALSE ;
249 }
250 if(cpvNotFound){
251 cpvBranch=(TBranch *) branches->At(ibranch) ;
252 if( fRecPointsTitle.CompareTo(cpvBranch->GetTitle())==0 )
253 if( strcmp(cpvBranch->GetName(),"PHOSCpvRP") == 0)
254 cpvNotFound = kFALSE ;
255 }
256 if(cluNotFound){
257 cluBranch=(TBranch *) branches->At(ibranch) ;
258 if( fRecPointsTitle.CompareTo(cluBranch->GetTitle())==0 )
259 if( strcmp(cluBranch->GetName(),"AliPHOSClusterizer") == 0)
260 cluNotFound = kFALSE ;
261 }
262 }
263
264 if(emcNotFound ||cpvNotFound ||cluNotFound ){
265 cout << "Can't find Branch with RecPoints or AliPHOSClusterizer " ;
266 cout << "Do nothing" <<endl ;
267 return kFALSE ;
268 }
269
270 emcBranch->SetAddress(&fEmcRecPoints) ;
271 cpvBranch->SetAddress(&fCpvRecPoints) ;
272 cluBranch->SetAddress(&fClusterizer) ;
273
274 treeR->GetEvent(0) ;
275 return kTRUE ;
276
277
278
279}
69183710 280//____________________________________________________________________________
7acf6008 281Float_t AliPHOSPIDv1::GetDistance(AliPHOSEmcRecPoint * emc,AliPHOSRecPoint * cpv, Option_t * Axis)const
69183710 282{
283 // Calculates the distance between the EMC RecPoint and the PPSD RecPoint
284
69183710 285 TVector3 vecEmc ;
7acf6008 286 TVector3 vecCpv ;
287
288 emc->GetLocalPosition(vecEmc) ;
289 cpv->GetLocalPosition(vecCpv) ;
290 if(emc->GetPHOSMod() == cpv->GetPHOSMod()){
291
292 // Correct to difference in CPV and EMC position due to different distance to center.
293 // we assume, that particle moves from center
294 Float_t dCPV = fGeom->GetIPtoOuterCoverDistance();
295 Float_t dEMC = fGeom->GetIPtoCrystalSurface() ;
296 dEMC = dEMC / dCPV ;
297 vecCpv = dEMC * vecCpv - vecEmc ;
298 if (Axis == "X") return vecCpv.X();
299 if (Axis == "Y") return vecCpv.Y();
300 if (Axis == "Z") return vecCpv.Z();
301 if (Axis == "R") return vecCpv.Mag();
302 }
303
304 return 100000000 ;
69183710 305}
306
6ad0bfa0 307//____________________________________________________________________________
7acf6008 308void AliPHOSPIDv1::Exec(Option_t * option)
6ad0bfa0 309{
7acf6008 310 if(!fIsInitialized)
311 Init() ;
312
313 if(strstr(option,"tim"))
314 gBenchmark->Start("PHOSPID");
315
316
317 Int_t nEvents = (Int_t) gAlice->TreeE()->GetEntries() ;
318
319 for(fNEvent = 0 ;fNEvent <nEvents; fNEvent++){
320 if(!ReadTrackSegments())
321 return ;
322 MakeRecParticles() ;
323 WriteRecParticles();
324 if(strstr(option,"deb"))
325 PrintRecParticles(option) ;
326 }
327
328 if(strstr(option,"tim")){
329 gBenchmark->Stop("PHOSPID");
330 cout << "AliPHOSPID:" << endl ;
331 cout << " took " << gBenchmark->GetCpuTime("PHOSPID") << " seconds for PID "
332 << gBenchmark->GetCpuTime("PHOSPID")/nEvents << " seconds per event " << endl ;
333 cout << endl ;
334 }
335
336}
337//____________________________________________________________________________
338void AliPHOSPIDv1::MakeRecParticles(){
339
b2a60966 340 // Makes a RecParticle out of a TrackSegment
6ad0bfa0 341
7acf6008 342 TIter next(fTrackSegments) ;
343 AliPHOSTrackSegment * ts ;
6ad0bfa0 344 Int_t index = 0 ;
09fc14a0 345 AliPHOSRecParticle * rp ;
7acf6008 346
347 Bool_t ellips = fIDOptions.Contains("ell",TString::kIgnoreCase ) ;
348 Bool_t disp = fIDOptions.Contains("dis",TString::kIgnoreCase ) ;
349
350 while ( (ts = (AliPHOSTrackSegment *)next()) ) {
fad3e5b9 351
7acf6008 352 new( (*fRecParticles)[index] ) AliPHOSRecParticle() ;
353 rp = (AliPHOSRecParticle *)fRecParticles->At(index) ;
354 rp->SetTraskSegment(index) ;
355
356 AliPHOSEmcRecPoint * emc = 0 ;
357 if(ts->GetEmcIndex()>=0)
358 emc = (AliPHOSEmcRecPoint *) fEmcRecPoints->At(ts->GetEmcIndex()) ;
fad3e5b9 359
7acf6008 360 AliPHOSRecPoint * cpv = 0 ;
361 if(ts->GetCpvIndex()>=0)
362 cpv = (AliPHOSRecPoint *) fCpvRecPoints->At(ts->GetCpvIndex()) ;
fad3e5b9 363
7acf6008 364 AliPHOSRecPoint * ppsd = 0 ;
365 if(ts->GetPpsdIndex()>=0)
366 ppsd= (AliPHOSRecPoint *) fCpvRecPoints->At(ts->GetPpsdIndex()) ;
367
368 //set momentum and energy first
369 Float_t e = emc->GetEnergy() ;
370 TVector3 dir = GetMomentumDirection(emc,cpv,ppsd) ;
371 dir.SetMag(e) ;
372
373 rp->SetMomentum(dir.X(),dir.Y(),dir.Z(),e) ;
374 rp->SetCalcMass(0);
375
376 //now set type (reconstructed) of the particle
377 Int_t showerprofile = 0; // 0 narrow and 1 wide
fad3e5b9 378
7acf6008 379 if(ellips){
380 Float_t lambda[2] ;
381 emc->GetElipsAxis(lambda) ;
382 if(fFormula->Eval(lambda[0],lambda[1]) <= 0 )
383 showerprofile = 1 ; // not narrow
1cb7c1ee 384 }
fad3e5b9 385
7acf6008 386 if(disp)
387 if(emc->GetDispersion() > fDispersion )
388 showerprofile = 1 ; // not narrow
389
390
2aad621e 391 // Looking at the photon conversion detector
7acf6008 392 Int_t pcdetector= 0 ; //1 hit and 0 no hit
393 if(ppsd)
394 if(GetDistance(emc, ppsd, "R") < fCpvEmcDistance)
395 pcdetector = 1 ;
396
397 // Looking at the CPV detector
398 Int_t cpvdetector= 0 ; //1 hit and 0 no hit
399 if(cpv)
400 if(GetDistance(emc, cpv, "R") < fCpvEmcDistance)
401 cpvdetector = 1 ;
402
403 Int_t type = showerprofile + 2 * pcdetector + 4 * cpvdetector ;
09fc14a0 404 rp->SetType(type) ;
6ad0bfa0 405 index++ ;
406 }
7acf6008 407
6ad0bfa0 408}
409
09fc14a0 410//____________________________________________________________________________
7acf6008 411void AliPHOSPIDv1:: Print(Option_t * option) const
09fc14a0 412{
b2a60966 413 // Print the parameters used for the particle type identification
414
7acf6008 415 cout << "AliPHOSPIDv1 : cuts for the particle idendification based on the shower profile " << endl ;
416
417 cout << "Eliptic cuts function " << endl ;
418 cout << " " << fFormula->GetTitle() << endl ;
09fc14a0 419
420}
421
422//____________________________________________________________________________
7acf6008 423void AliPHOSPIDv1::SetShowerProfileCut(char * formula){
424 //set shape of the cut on the axis of ellipce, drown around shouer
425 //shower considered "narrow" if Formula(lambda[0],lambda[1]) > 0.
426 if(fFormula)
427 delete fFormula;
428 fFormula = new TF2("Lambda Cut",formula,0,3,0,3) ;
429}
430//____________________________________________________________________________
431void AliPHOSPIDv1::WriteRecParticles()
09fc14a0 432{
b2a60966 433
7acf6008 434 //check, if these branches already exist
435 TBranch * pidBranch = 0;
436 TBranch * rpBranch = 0;
437
438 TObjArray * branches = gAlice->TreeR()->GetListOfBranches() ;
439 Int_t ibranch;
440 Bool_t pidNotFound = kTRUE ;
441 Bool_t rpNotFound = kTRUE ;
442
443 for(ibranch = 0;(ibranch <branches->GetEntries())&& pidNotFound && rpNotFound;ibranch++){
444 if(pidNotFound){
445 pidBranch=(TBranch *) branches->At(ibranch) ;
446 if( (strcmp(pidBranch->GetName(),"PHOSPID") == 0) &&
447 (fRecparticlesTitle.CompareTo(pidBranch->GetTitle()) == 0) )
448 pidNotFound = kFALSE ;
449 }
450 if(rpNotFound){
451 rpBranch=(TBranch *) branches->At(ibranch) ;
452 if( (strcmp(rpBranch->GetName(),"PHOSRP") == 0) &&
453 (fRecparticlesTitle.CompareTo(rpBranch->GetTitle())==0 ))
454 rpNotFound = kFALSE ;
455 }
456 }
457
458 if(!pidNotFound || !rpNotFound) {
459 cout << "AliPHOSPIDv1 error: " << endl ;
460 cout << " Branch PHOSRP and PHOSPID with title '"<<fRecparticlesTitle.Data()<<"' already exist "<< endl ;
461 cout << " can not overwrite " << endl ;
462 return ;
463 }
69183710 464
7acf6008 465 //Make branch in TreeR for TrackSegments
466 char * filename = 0;
467 if(gSystem->Getenv("CONFIG_SPLIT_FILE")!=0){ //generating file name
468 filename = new char[strlen(gAlice->GetBaseFile())+20] ;
469 sprintf(filename,"%s/PHOS.Reco.root",gAlice->GetBaseFile()) ;
470 }
471
472 TDirectory *cwd = gDirectory;
473
474 //First rp
475 Int_t bufferSize = 32000 ;
476 rpBranch = gAlice->TreeR()->Branch("PHOSRP",&fRecParticles,bufferSize);
477 rpBranch->SetTitle(fRecparticlesTitle.Data());
478 if (filename) {
479 rpBranch->SetFile(filename);
480 TIter next( rpBranch->GetListOfBranches());
481 while ((rpBranch=(TBranch*)next())) {
482 rpBranch->SetFile(filename);
483 }
484 cwd->cd();
485 }
486
487 //second, pid
488 Int_t splitlevel = 0 ;
489 AliPHOSPIDv1 * pid = this ;
490 pidBranch = gAlice->TreeR()->Branch("AliPHOSPID","AliPHOSPIDv1",&pid,bufferSize,splitlevel);
491 pidBranch->SetTitle(fRecparticlesTitle.Data());
492 if (filename) {
493 pidBranch->SetFile(filename);
494 TIter next( pidBranch->GetListOfBranches());
495 while ((pidBranch=(TBranch*)next())) {
496 pidBranch->SetFile(filename);
497 }
498 cwd->cd();
499 }
500
501 gAlice->TreeR()->Fill() ;
502 gAlice->TreeR()->Write(0,kOverwrite) ;
503
504}
69183710 505//____________________________________________________________________________
7acf6008 506void AliPHOSPIDv1::PlotDispersionCuts()const
69183710 507{
7acf6008 508 TCanvas* lambdas = new TCanvas("lambdas","Cuts on the elipse axise",200,10,700,500);
509
510 if(fIDOptions.Contains("ell",TString::kIgnoreCase ) ){
511 TF2 * ell = new TF2("Elliptic Cuts",fFormula->GetName(),0,3,0,3) ;
512 ell->SetMinimum(0.0000001) ;
513 ell->SetMaximum(0.001) ;
514 ell->SetLineStyle(1) ;
515 ell->SetLineWidth(2) ;
516 ell->Draw() ;
517 }
518
519 if( fIDOptions.Contains("dis",TString::kIgnoreCase ) ){
520 TF2 * dsp = new TF2("dispersion","(y<x)*(x*x+y*y < [0]*[0])",0,3,0,3) ;
521 dsp->SetParameter(0,fDispersion) ;
522 dsp->SetMinimum(0.0000001) ;
523 dsp->SetMaximum(0.001) ;
524 dsp->SetLineStyle(1) ;
525 dsp->SetLineColor(2) ;
526 dsp->SetLineWidth(2) ;
527 dsp->SetNpx(200) ;
528 dsp->SetNpy(200) ;
529 if(fIDOptions.Contains("ell",TString::kIgnoreCase ) )
530 dsp->Draw("same") ;
531 else
532 dsp->Draw() ;
533 }
534 lambdas->Update();
535}
69183710 536
7acf6008 537//____________________________________________________________________________
538TVector3 AliPHOSPIDv1::GetMomentumDirection(AliPHOSEmcRecPoint * emc, AliPHOSRecPoint * cpv,AliPHOSRecPoint * ppsd)const
539{
540 // Calculates the momentum direction:
541 // 1. if only a EMC RecPoint, direction is given by IP and this RecPoint
542 // 2. if a EMC RecPoint and one PPSD RecPoint, direction is given by the line through the 2 recpoints
543 // 3. if a EMC RecPoint and two PPSD RecPoints, dirrection is given by the average line through
544 // the 2 pairs of recpoints
545 // However because of the poor position resolution of PPSD the direction is always taken as if we were
546 // in case 1.
547
548 TVector3 dir(0,0,0) ;
549
550 TVector3 emcglobalpos ;
551 TMatrix dummy ;
552
553 emc->GetGlobalPosition(emcglobalpos, dummy) ;
554
69183710 555
7acf6008 556 // The following commeneted code becomes valid once the PPSD provides
557 // a reasonable position resolution, at least as good as EMC !
558 // TVector3 ppsdlglobalpos ;
559 // TVector3 ppsduglobalpos ;
560 // if( fPpsdLowRecPoint ){ // certainly a photon that has concerted
561 // fPpsdLowRecPoint->GetGlobalPosition(ppsdlglobalpos, mdummy) ;
562 // dir = emcglobalpos - ppsdlglobalpos ;
563 // if( fPpsdUpRecPoint ){ // not looks like a charged
564 // fPpsdUpRecPoint->GetGlobalPosition(ppsduglobalpos, mdummy) ;
565 // dir = ( dir + emcglobalpos - ppsduglobalpos ) * 0.5 ;
566 // }
567 // }
568 // else { // looks like a neutral
569 // dir = emcglobalpos ;
570 // }
571
572 dir = emcglobalpos ;
573 dir.SetZ( -dir.Z() ) ; // why ?
574 dir.SetMag(1.) ;
575
576 //account correction to the position of IP
577 Float_t xo,yo,zo ; //Coordinates of the origin
578 gAlice->Generator()->GetOrigin(xo,yo,zo) ;
579 TVector3 origin(xo,yo,zo);
580 dir = dir - origin ;
581
582 return dir ;
583}
584//____________________________________________________________________________
585void AliPHOSPIDv1::PrintRecParticles(Option_t * option){
586
587 cout << "AliPHOSPIDv1: " << endl ;
588 cout << " found " << fRecParticles->GetEntriesFast() << " RecParticles " << endl ;
589
590 if(strstr(option,"all")) { // printing found TS
591
592 cout << " PARTICLE "
593 << " Index " << endl ;
594 // << " X "
595 // << " Y "
596 // << " Z "
597 // << " # of primaries "
598 // << " Primaries list " << endl;
599
600 Int_t index ;
601 for (index = 0 ; index < fRecParticles->GetEntries() ; index++) {
602 AliPHOSRecParticle * rp = (AliPHOSRecParticle * ) fRecParticles->At(index) ;
603
604 Text_t particle[11];
605 switch(rp->GetType()) {
606 case AliPHOSFastRecParticle::kNEUTRALEM:
607 strcpy( particle, "NEUTRAL_EM");
608 break;
609 case AliPHOSFastRecParticle::kNEUTRALHA:
610 strcpy(particle, "NEUTRAL_HA");
611 break;
612 case AliPHOSFastRecParticle::kGAMMA:
613 strcpy(particle, "GAMMA");
614 break ;
615 case AliPHOSFastRecParticle::kGAMMAHA:
616 strcpy(particle, "GAMMA_H");
617 break ;
618 case AliPHOSFastRecParticle::kABSURDEM:
619 strcpy(particle, "ABSURD_EM") ;
620 break ;
621 case AliPHOSFastRecParticle::kABSURDHA:
622 strcpy(particle, "ABSURD_HA") ;
623 break ;
624 case AliPHOSFastRecParticle::kELECTRON:
625 strcpy(particle, "ELECTRON") ;
626 break ;
627 case AliPHOSFastRecParticle::kCHARGEDHA:
628 strcpy(particle, "CHARGED_HA") ;
629 break ;
630 }
631
632 // Int_t * primaries;
633 // Int_t nprimaries;
634 // primaries = rp->GetPrimaries(nprimaries);
635
636 cout << setw(15) << particle << " "
637 << setw(3) << rp->GetIndexInList() << " " ;
638 // << setw(4) << nprimaries << " ";
639 // for (Int_t iprimary=0; iprimary<nprimaries; iprimary++)
640 // cout << setw(4) << primaries[iprimary] << " ";
641 cout << endl;
642 }
643 cout << "-------------------------------------------" << endl ;
644 }
645
69183710 646}
647
7acf6008 648
649