[u/mrichter/AliRoot.git] / PHOS / AliPHOSJetFinder.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

//_________________________________________________________________________
// C++ version of UA2 and/or Lund jet finding algorithm
// UA1 jet algorithm from LUND JETSET (LUCELL)
// Find jets at the level of no detector and Digits.
// Needs modifications. 
//*-- Author : D.Peressounko after UA1 coll. etc
//////////////////////////////////////////////////////////////////////////////

/* $Id$ */

/* History of cvs commits:
 *
 * $Log$
 * Revision 1.8  2005/05/28 14:19:04  schutz
 * Compilation warnings fixed by T.P.
 *
 */

// --- ROOT system ---
#include "TClonesArray.h"
//      #include "TIter.h"
#include "TParticle.h"
#include "TTask.h"
// --- Standard library ---

// --- AliRoot header files ---
#include "AliLog.h"
#include "AliPHOSJet.h"
#include "AliPHOSGeometry.h"
#include "AliPHOSDigit.h"
#include "AliPHOSJetFinder.h"
#include "AliPHOSDigitizer.h"

ClassImp(AliPHOSJetFinder)


//____________________________________________________________________________ 
AliPHOSJetFinder::AliPHOSJetFinder():
  TNamed("AliPHOSJetFinder",""),
  fNJets(0),
  fStatusCode(-999),
  fMode(0),
  fConeRad(1.),
  fMaxConeMove(0.15),
  fMinConeMove(0.05),
  fEtSeed(4.),
  fEtMin(5.),
  fPrecBg(0.00035),
  fSimGain(0.),
  fSimPedestal(0.),
  fParticles(0),
  fJets(0)
{
  //Initialize jet parameters
}

//____________________________________________________________________________ 
AliPHOSJetFinder::AliPHOSJetFinder(const AliPHOSJetFinder & jet) : 
  TNamed(jet),
  fNJets(0),
  fStatusCode(-999),
  fMode(0),
  fConeRad(1.),
  fMaxConeMove(0.15),
  fMinConeMove(0.05),
  fEtSeed(4.),
  fEtMin(5.),
  fPrecBg(0.00035),
  fSimGain(0.),
  fSimPedestal(0.),
  fParticles(0),
  fJets(0)
{
  // copy ctor: no implementation yet
  Fatal("cpy ctor", "not implemented");
}

//____________________________________________________________________________ 
  AliPHOSJetFinder::~AliPHOSJetFinder()
{
  //dtor
  if(fParticles){
    delete fParticles ;
    fParticles = 0 ;
  }
  if(fJets){
    delete fJets ;
    fJets = 0 ;
  } 
}

//____________________________________________________________________________ 
void  AliPHOSJetFinder::FindJetsFromParticles(const TClonesArray * plist,TObjArray * jetslist) 
{
  //Find jets in the case without detector.
  TIter next(plist) ;

  TIter nextJet(jetslist) ;

  fNJets = 0 ;
  TParticle * p ;
  AliPHOSJet * jet ;
  //In this cicle we find number of jets and define approx. their directions
  //note, that we do not really add particles to jet (index =-1)
  while((p=static_cast<TParticle*>(next()))){
    if(fStatusCode==-999 || p->GetStatusCode()==fStatusCode){
    if(p->Energy() >= fEtSeed){ //Energetic enough
      //cout << "p " << p->Energy() << endl ;
      //cout << "Status "<<fStatusCode<<" "<<p->GetName()<<" " << p->Energy() << " "<<p->Eta()<< " "<<p->Phi()<<endl ;
      Bool_t startnew = kTRUE ;
      //Do not start new jet if part of older jet
      nextJet.Reset() ;
      while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	//jet->Print() ;
	if(jet->AcceptConeDeviation(p)){
	  startnew = kFALSE ;
	  //cout << "false" << endl ;
	  break ;
	}
      }
      if(startnew){
	//cout << "new " << endl ;
	jet = new AliPHOSJet() ;
	jetslist->Add(jet) ;
	//	jet = static_cast<AliPHOSJet*>(jetslist->Last()) ;
	jet->SetConeRadius(fConeRad) ;
	jet->SetMaxConeMove(fMaxConeMove) ;
	//	jet->SetMinConeMove(fMinConeMove) ;
	jet->AddParticle(p,-1) ;
	fNJets++;
      }
    }
    while((jet=static_cast<AliPHOSJet*>(nextJet()))){
      if(jet->AcceptConeDeviation(p))
	jet->AddParticle(p,-1) ; //Just recalculate direction of jet
    }
    }
  }
    
  //now calculate directions of jets using collected information
  nextJet.Reset() ;
  while((jet=static_cast<AliPHOSJet*>(nextJet()))){
    jet->CalculateAll() ;
    if(jet->Energy() < fEtMin){
      jetslist->Remove(jet) ;
      delete jet ;
    }
  }

  jetslist->Compress() ;
  //And finally, really add particles to jets
  for(Int_t iPart=0; iPart<plist->GetEntries();iPart++){
    p=static_cast<TParticle*>(plist->At(iPart)) ;
    if(fStatusCode == -999 || p->GetStatusCode()==fStatusCode){
    Double_t dist = 999999. ; //big distance
    Int_t iJet = -1 ;
    for(Int_t i=0; i<jetslist->GetEntriesFast();i++){
      jet=static_cast<AliPHOSJet*>(jetslist->At(i)) ;
      if(jet->IsInCone(p)){
	Double_t cdist = jet->DistanceToJet(p); 
	if(cdist < dist){
	  dist = cdist ;
	  iJet = i ;
	}
      }
    }
    if(iJet>-1)
      (static_cast<AliPHOSJet*>(jetslist->At(iJet)))->AddParticle(p,iPart); //assign particle to closest jet
  }
  }
  
  //Calculate jet parameters 
  nextJet.Reset() ;
  while((jet=static_cast<AliPHOSJet*>(nextJet()))){
    jet->CalculateAll() ;
  }

}
//____________________________________________________________________________ 
void AliPHOSJetFinder::FindJetsFromDigits(const TClonesArray * digits, TObjArray * jets){
  //Find jets in the case witht detector at the level of digits.
  if(digits->GetEntries()==0){
    AliError(Form("No entries in digits list \n")) ;
    return ;
  }


  TClonesArray * copyDigits = new TClonesArray(*digits) ;

  //Remove CPV digits if any
  AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("GPS2","") ;
  Int_t iDigit ;
  AliPHOSDigit * digit ;
  for(iDigit=copyDigits->GetEntries()-1;iDigit>=0;iDigit--){
    digit=static_cast<AliPHOSDigit *>(copyDigits->At(iDigit)) ;
    if(!geom->IsInEMC(digit->GetId()))
      copyDigits->RemoveAt(iDigit) ;
    else
      break ;
  }
  copyDigits->Compress() ;

  Double_t totalEnergy = 0 ;
  Float_t * energy = new Float_t[copyDigits->GetEntries()] ;
  //calculate average energy of digits
  //fill array of energies
  for(iDigit=0;iDigit<copyDigits->GetEntries();iDigit++){
    digit=static_cast<AliPHOSDigit *>(copyDigits->At(iDigit)) ;
    energy[iDigit] = Calibrate(digit) ;
    totalEnergy+=energy[iDigit] ;
  }
  
  //Sort digits in decreasing energy.
  Int_t * index = new Int_t[copyDigits->GetEntries()] ;
  TMath::Sort(copyDigits->GetEntries(),energy,index) ;
  
  Double_t eAverage = totalEnergy/copyDigits->GetEntries()  ;
  //remove digits below average energy
  for(iDigit=copyDigits->GetEntries()-1;iDigit>=0;iDigit--){
    digit=static_cast<AliPHOSDigit *>(copyDigits->At(index[iDigit])) ;
    if(energy[index[iDigit]] < eAverage)
      copyDigits->RemoveAt(iDigit) ;
    else
      break ;
  }
  
  
  AliPHOSJet * jet ;
  Int_t iIter = 0 ;
  while(iIter < 10){//less than 10 iterations
    
    //while digits above seed
    for(Int_t ind=0;ind<copyDigits->GetEntriesFast();ind++){
      digit=static_cast<AliPHOSDigit*>(copyDigits->At(index[ind])) ;
      if(energy[index[ind]] > fEtSeed && digit){ //start new jet      
 	jet = new AliPHOSJet() ;
	Double_t e,eta,phi ;
	CalculateEEtaPhi(digit,e,eta,phi) ;
	jet->AddDigit(e,eta,phi,-1) ;  
	//loop over left digits
	for(iDigit = 0 ; iDigit < copyDigits->GetEntries() ; iDigit++){
	  if(iDigit!= ind){ //first digit already in jet
	    digit = static_cast<AliPHOSDigit *>(copyDigits->At(iDigit));
	    CalculateEEtaPhi(digit,e,eta,phi) ;	    
	    if(jet->IsInCone(eta,phi) && //is cell in cone
	       jet->AcceptConeDeviation(e,eta,phi)){//if cone does not move too much	      
	      jet->AddDigit(e,eta,phi,-1) ;  //accept new direction
	    }
	  }
	}//end of loop over cells
	
	//accept  all anused cells incide cone
	//note, that digits might be returned as anused later
	for(Int_t icell = 0 ; icell < copyDigits->GetEntries() ; icell++){
	  digit = static_cast<AliPHOSDigit *>(copyDigits->At(icell));
	  if(jet->IsInCone(eta,phi)){ //is cell in cone
	    CalculateEEtaPhi(digit,e,eta,phi) ;
	    jet->AddDigit(e,eta,phi,digit->GetIndexInList()) ; 
	  }
	}
	
	//Accept Jet with Et > Et_min and remove all belonging digits
	if(jet->Energy()/TMath::CosH(jet->Eta()) > fEtMin){
	  Int_t nIndxs ;
	  const Int_t * indxs = jet->Indexs(nIndxs) ;
	  for(Int_t i=0;i<nIndxs;i++){
	    copyDigits->RemoveAt(indxs[i]) ;
	  }
	  jet->CalculateAll() ;
	  jets->AddAt(jet,fNJets++);
	}
	else{ //remove jet and do not touch digits
	  delete jet ;
	}
      }
      else{ 
	if(energy[index[ind]] < fEtSeed){ // no more digits above threshold left, return from loop
	  break ;
	}
      }
      
      iIter++ ;
      //calculate new energy of backrgound
      Double_t oldTotalEnergy = totalEnergy ;
      totalEnergy = 0 ;
      for(Int_t i=0 ; i<copyDigits->GetEntriesFast() ; i++){
	digit=static_cast<AliPHOSDigit*>(copyDigits->At(index[ind])) ;
	if(digit)
	  totalEnergy+=energy[i] ;
      }
      if(!fMode || (oldTotalEnergy != 0) && 
	 (TMath::Abs(oldTotalEnergy - totalEnergy)/oldTotalEnergy < fPrecBg))
	break ;	
    }
  }
  delete [] energy;
  delete [] index;
  copyDigits->Delete() ;
  
}
//____________________________________________________________________________ 
Double_t AliPHOSJetFinder::Calibrate(const AliPHOSDigit * digit){ 
  //Both simulated and raw digits are already calibrated
  
  return digit->GetEnergy() ;        
  
  //  }  
}
//____________________________________________________________________________ 
void AliPHOSJetFinder::CalculateEEtaPhi(const AliPHOSDigit * d,Double_t &e, Double_t &eta, Double_t &phi){
  //Calculate direction of the jet
  e=Calibrate(d) ;
  AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("GPS2","") ;
  TVector3 pos ;
  geom->RelPosInAlice(d->GetId(), pos) ;
  eta = pos.Eta() ;
  phi = pos.Phi() ;
}
//____________________________________________________________________________ 
void AliPHOSJetFinder::Print(const Option_t *) const {	
  //Print parameters of the found jet
  printf("\n --------------- AliPHOSJetFinder --------------- \n") ;
  printf(" Jets found .........%d \n",fNJets) ;
  printf(" Seed energy cut ....%f \n",fEtSeed) ;
  printf(" Cone radius ........%f \n",fConeRad) ;
  printf(" Minimal cone move ..%f \n",fMinConeMove) ;
  printf(" Maximal cone move ..%f \n",fMaxConeMove) ;
  printf("------------------------------------------------- \n") ;
}
Commit	Line	Data
5240525e	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
	16	//_________________________________________________________________________
	17	// C++ version of UA2 and/or Lund jet finding algorithm
0bc3b8ed	18	// UA1 jet algorithm from LUND JETSET (LUCELL)
	19	// Find jets at the level of no detector and Digits.
	20	// Needs modifications.
5240525e	21	//*-- Author : D.Peressounko after UA1 coll. etc
	22	//////////////////////////////////////////////////////////////////////////////
	23
702ab87e	24	/* $Id$ */
	25
	26	/* History of cvs commits:
	27	*
	28	* $Log$
3f7dbdb7	29	* Revision 1.8 2005/05/28 14:19:04 schutz
	30	* Compilation warnings fixed by T.P.
	31	*
702ab87e	32	*/
702ab87e	33
5240525e	34	// --- ROOT system ---
	35	#include "TClonesArray.h"
	36	// #include "TIter.h"
	37	#include "TParticle.h"
	38	#include "TTask.h"
	39	// --- Standard library ---
	40
	41	// --- AliRoot header files ---
351dd634	42	#include "AliLog.h"
5240525e	43	#include "AliPHOSJet.h"
e957fea8	44	#include "AliPHOSGeometry.h"
5240525e	45	#include "AliPHOSDigit.h"
5240525e	46	#include "AliPHOSJetFinder.h"
	47	#include "AliPHOSDigitizer.h"
	48
	49	ClassImp(AliPHOSJetFinder)
	50
	51
	52	//____________________________________________________________________________
3f7dbdb7	53	AliPHOSJetFinder::AliPHOSJetFinder():
	54	TNamed("AliPHOSJetFinder",""),
	55	fNJets(0),
	56	fStatusCode(-999),
	57	fMode(0),
	58	fConeRad(1.),
	59	fMaxConeMove(0.15),
	60	fMinConeMove(0.05),
	61	fEtSeed(4.),
	62	fEtMin(5.),
	63	fPrecBg(0.00035),
	64	fSimGain(0.),
	65	fSimPedestal(0.),
	66	fParticles(0),
	67	fJets(0)
5240525e	68	{
0bc3b8ed	69	//Initialize jet parameters
3f7dbdb7	70	}
5240525e	71
3f7dbdb7	72	//____________________________________________________________________________
	73	AliPHOSJetFinder::AliPHOSJetFinder(const AliPHOSJetFinder & jet) :
	74	TNamed(jet),
	75	fNJets(0),
	76	fStatusCode(-999),
	77	fMode(0),
	78	fConeRad(1.),
	79	fMaxConeMove(0.15),
	80	fMinConeMove(0.05),
	81	fEtSeed(4.),
	82	fEtMin(5.),
	83	fPrecBg(0.00035),
	84	fSimGain(0.),
	85	fSimPedestal(0.),
	86	fParticles(0),
	87	fJets(0)
	88	{
	89	// copy ctor: no implementation yet
	90	Fatal("cpy ctor", "not implemented");
5240525e	91	}
	92
	93	//____________________________________________________________________________
	94	AliPHOSJetFinder::~AliPHOSJetFinder()
	95	{
0bc3b8ed	96	//dtor
5240525e	97	if(fParticles){
	98	delete fParticles ;
	99	fParticles = 0 ;
	100	}
	101	if(fJets){
	102	delete fJets ;
	103	fJets = 0 ;
	104	}
	105	}
	106
	107	//____________________________________________________________________________
	108	void AliPHOSJetFinder::FindJetsFromParticles(const TClonesArray * plist,TObjArray * jetslist)
	109	{
0bc3b8ed	110	//Find jets in the case without detector.
5240525e	111	TIter next(plist) ;
	112
	113	TIter nextJet(jetslist) ;
	114
	115	fNJets = 0 ;
	116	TParticle * p ;
	117	AliPHOSJet * jet ;
	118	//In this cicle we find number of jets and define approx. their directions
	119	//note, that we do not really add particles to jet (index =-1)
	120	while((p=static_cast<TParticle*>(next()))){
	121	if(fStatusCode==-999 \|\| p->GetStatusCode()==fStatusCode){
	122	if(p->Energy() >= fEtSeed){ //Energetic enough
	123	//cout << "p " << p->Energy() << endl ;
	124	//cout << "Status "<<fStatusCode<<" "<<p->GetName()<<" " << p->Energy() << " "<<p->Eta()<< " "<<p->Phi()<<endl ;
	125	Bool_t startnew = kTRUE ;
	126	//Do not start new jet if part of older jet
	127	nextJet.Reset() ;
	128	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	129	//jet->Print() ;
	130	if(jet->AcceptConeDeviation(p)){
	131	startnew = kFALSE ;
	132	//cout << "false" << endl ;
	133	break ;
	134	}
	135	}
	136	if(startnew){
	137	//cout << "new " << endl ;
	138	jet = new AliPHOSJet() ;
	139	jetslist->Add(jet) ;
	140	// jet = static_cast<AliPHOSJet*>(jetslist->Last()) ;
	141	jet->SetConeRadius(fConeRad) ;
	142	jet->SetMaxConeMove(fMaxConeMove) ;
	143	// jet->SetMinConeMove(fMinConeMove) ;
	144	jet->AddParticle(p,-1) ;
	145	fNJets++;
	146	}
	147	}
	148	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	149	if(jet->AcceptConeDeviation(p))
	150	jet->AddParticle(p,-1) ; //Just recalculate direction of jet
	151	}
	152	}
	153	}
	154
	155	//now calculate directions of jets using collected information
	156	nextJet.Reset() ;
	157	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	158	jet->CalculateAll() ;
	159	if(jet->Energy() < fEtMin){
	160	jetslist->Remove(jet) ;
	161	delete jet ;
	162	}
	163	}
	164
	165	jetslist->Compress() ;
	166	//And finally, really add particles to jets
	167	for(Int_t iPart=0; iPart<plist->GetEntries();iPart++){
	168	p=static_cast<TParticle*>(plist->At(iPart)) ;
	169	if(fStatusCode == -999 \|\| p->GetStatusCode()==fStatusCode){
	170	Double_t dist = 999999. ; //big distance
	171	Int_t iJet = -1 ;
	172	for(Int_t i=0; i<jetslist->GetEntriesFast();i++){
	173	jet=static_cast<AliPHOSJet*>(jetslist->At(i)) ;
	174	if(jet->IsInCone(p)){
175	Double_t cdist = jet->DistanceToJet(p);
176	if(cdist < dist){
177	dist = cdist ;
178	iJet = i ;
179	}
180	}
181	}
182	if(iJet>-1)
183	(static_cast<AliPHOSJet*>(jetslist->At(iJet)))->AddParticle(p,iPart); //assign particle to closest jet
184	}
185	}
186
187	//Calculate jet parameters
188	nextJet.Reset() ;
189	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
190	jet->CalculateAll() ;
191	}
192
193	}
194	//____________________________________________________________________________
195	void AliPHOSJetFinder::FindJetsFromDigits(const TClonesArray * digits, TObjArray * jets){
0bc3b8ed	196	//Find jets in the case witht detector at the level of digits.
5240525e	197	if(digits->GetEntries()==0){
351dd634	198	AliError(Form("No entries in digits list \n")) ;
5240525e	199	return ;
	200	}
	201
	202
	203	TClonesArray * copyDigits = new TClonesArray(*digits) ;
	204
	205	//Remove CPV digits if any
	206	AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("GPS2","") ;
	207	Int_t iDigit ;
	208	AliPHOSDigit * digit ;
	209	for(iDigit=copyDigits->GetEntries()-1;iDigit>=0;iDigit--){
	210	digit=static_cast<AliPHOSDigit *>(copyDigits->At(iDigit)) ;
	211	if(!geom->IsInEMC(digit->GetId()))
	212	copyDigits->RemoveAt(iDigit) ;
	213	else
	214	break ;
	215	}
	216	copyDigits->Compress() ;
	217
	218	Double_t totalEnergy = 0 ;
2fa01244	219	Float_t * energy = new Float_t[copyDigits->GetEntries()] ;
5240525e	220	//calculate average energy of digits
	221	//fill array of energies
	222	for(iDigit=0;iDigit<copyDigits->GetEntries();iDigit++){
	223	digit=static_cast<AliPHOSDigit *>(copyDigits->At(iDigit)) ;
	224	energy[iDigit] = Calibrate(digit) ;
	225	totalEnergy+=energy[iDigit] ;
	226	}
	227
	228	//Sort digits in decreasing energy.
2fa01244	229	Int_t * index = new Int_t[copyDigits->GetEntries()] ;
5240525e	230	TMath::Sort(copyDigits->GetEntries(),energy,index) ;
	231
	232	Double_t eAverage = totalEnergy/copyDigits->GetEntries() ;
	233	//remove digits below average energy
	234	for(iDigit=copyDigits->GetEntries()-1;iDigit>=0;iDigit--){
	235	digit=static_cast<AliPHOSDigit *>(copyDigits->At(index[iDigit])) ;
	236	if(energy[index[iDigit]] < eAverage)
	237	copyDigits->RemoveAt(iDigit) ;
	238	else
	239	break ;
	240	}
	241
	242
	243	AliPHOSJet * jet ;
	244	Int_t iIter = 0 ;
	245	while(iIter < 10){//less than 10 iterations
	246
	247	//while digits above seed
	248	for(Int_t ind=0;ind<copyDigits->GetEntriesFast();ind++){
	249	digit=static_cast<AliPHOSDigit*>(copyDigits->At(index[ind])) ;
	250	if(energy[index[ind]] > fEtSeed && digit){ //start new jet
	251	jet = new AliPHOSJet() ;
	252	Double_t e,eta,phi ;
	253	CalculateEEtaPhi(digit,e,eta,phi) ;
	254	jet->AddDigit(e,eta,phi,-1) ;
	255	//loop over left digits
605cb8bb	256	for(iDigit = 0 ; iDigit < copyDigits->GetEntries() ; iDigit++){
5240525e	257	if(iDigit!= ind){ //first digit already in jet
	258	digit = static_cast<AliPHOSDigit *>(copyDigits->At(iDigit));
	259	CalculateEEtaPhi(digit,e,eta,phi) ;
90cceaf6	260	if(jet->IsInCone(eta,phi) && //is cell in cone
5240525e	261	jet->AcceptConeDeviation(e,eta,phi)){//if cone does not move too much
	262	jet->AddDigit(e,eta,phi,-1) ; //accept new direction
	263	}
	264	}
	265	}//end of loop over cells
	266
	267	//accept all anused cells incide cone
	268	//note, that digits might be returned as anused later
	269	for(Int_t icell = 0 ; icell < copyDigits->GetEntries() ; icell++){
	270	digit = static_cast<AliPHOSDigit *>(copyDigits->At(icell));
90cceaf6	271	if(jet->IsInCone(eta,phi)){ //is cell in cone
5240525e	272	CalculateEEtaPhi(digit,e,eta,phi) ;
	273	jet->AddDigit(e,eta,phi,digit->GetIndexInList()) ;
	274	}
	275	}
	276
	277	//Accept Jet with Et > Et_min and remove all belonging digits
	278	if(jet->Energy()/TMath::CosH(jet->Eta()) > fEtMin){
	279	Int_t nIndxs ;
	280	const Int_t * indxs = jet->Indexs(nIndxs) ;
	281	for(Int_t i=0;i<nIndxs;i++){
	282	copyDigits->RemoveAt(indxs[i]) ;
	283	}
	284	jet->CalculateAll() ;
	285	jets->AddAt(jet,fNJets++);
	286	}
	287	else{ //remove jet and do not touch digits
	288	delete jet ;
	289	}
	290	}
	291	else{
	292	if(energy[index[ind]] < fEtSeed){ // no more digits above threshold left, return from loop
	293	break ;
	294	}
	295	}
	296
	297	iIter++ ;
	298	//calculate new energy of backrgound
	299	Double_t oldTotalEnergy = totalEnergy ;
	300	totalEnergy = 0 ;
	301	for(Int_t i=0 ; i<copyDigits->GetEntriesFast() ; i++){
	302	digit=static_cast<AliPHOSDigit*>(copyDigits->At(index[ind])) ;
	303	if(digit)
	304	totalEnergy+=energy[i] ;
	305	}
	306	if(!fMode \|\| (oldTotalEnergy != 0) &&
	307	(TMath::Abs(oldTotalEnergy - totalEnergy)/oldTotalEnergy < fPrecBg))
	308	break ;
	309	}
	310	}
2fa01244	311	delete [] energy;
2fa01244	312	delete [] index;
5240525e	313	copyDigits->Delete() ;
	314
	315	}
	316	//____________________________________________________________________________
	317	Double_t AliPHOSJetFinder::Calibrate(const AliPHOSDigit * digit){
f898e0f3	318	//Both simulated and raw digits are already calibrated
5240525e	319
f898e0f3	320	return digit->GetEnergy() ;
5240525e	321
	322	// }
	323	}
	324	//____________________________________________________________________________
	325	void AliPHOSJetFinder::CalculateEEtaPhi(const AliPHOSDigit * d,Double_t &e, Double_t &eta, Double_t &phi){
0bc3b8ed	326	//Calculate direction of the jet
5240525e	327	e=Calibrate(d) ;
	328	AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("GPS2","") ;
	329	TVector3 pos ;
	330	geom->RelPosInAlice(d->GetId(), pos) ;
	331	eta = pos.Eta() ;
	332	phi = pos.Phi() ;
	333	}
	334	//____________________________________________________________________________
702ab87e	335	void AliPHOSJetFinder::Print(const Option_t *) const {
0bc3b8ed	336	//Print parameters of the found jet
5240525e	337	printf("\n --------------- AliPHOSJetFinder --------------- \n") ;
	338	printf(" Jets found .........%d \n",fNJets) ;
	339	printf(" Seed energy cut ....%f \n",fEtSeed) ;
	340	printf(" Cone radius ........%f \n",fConeRad) ;
	341	printf(" Minimal cone move ..%f \n",fMinConeMove) ;
	342	printf(" Maximal cone move ..%f \n",fMaxConeMove) ;
	343	printf("------------------------------------------------- \n") ;
	344	}