[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
//////////////////////////////////////////////////////////////////////////////

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

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

ClassImp(AliPHOSJetFinder)


//____________________________________________________________________________ 
  AliPHOSJetFinder::AliPHOSJetFinder():TNamed("AliPHOSJetFinder","") 
{
  //Initialize jet parameters
  fNJets = 0 ; 
  fMode  = 0 ;   //No iterations 
  fStatusCode = -999 ; //no selection

  fConeRad = 1.;   //Radius of jet value?????????
  fMaxConeMove = 0.15 ; //value???????
  fMinConeMove = 0.05 ; //value???????
  fEtSeed = 4. ; //Energy of seed particle value??????????
  fEtMin = 5.;   //minimal energy of jet   value??????????
  fPrecBg = 0.00035 ; //value????????
  fSimGain = 0.;
  fSimPedestal = 0.;

  fParticles = 0;
  fJets = 0 ;
  
}

//____________________________________________________________________________ 
  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){
    Error("JetsFromDigits","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(Int_t 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){ 
//   if(fPedestals || fGains ){  //use calibration data
//     if(!fPedestals || !fGains ){
//       Error("Calibrate","Either Pedestals of Gains not set!") ;
//       return 0 ;
//     }
//     Float_t en=(digit->GetAmp() - fPedestals->Data(digit->GetId)()))*fGains->Data(digit->GetId()) ;
//     if(en>0)
//       return en ;
//     else
//       return 0. ;
//   }
//   else{ //simulation
  if(fSimGain==0){ //read simulation parameters
    AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
    if(!gime){
      Error("Calibrate","Can not read Calibration parameters") ;
      return 0 ;
    }
    const TTask * task = gime->Digitizer() ;
    if(strcmp(task->IsA()->GetName(),"AliPHOSDigitizer")==0){
      const AliPHOSDigitizer * dig = static_cast<const AliPHOSDigitizer *>(task) ;
      fSimGain     = dig->GetEMCchannel() ;
      fSimPedestal = dig->GetEMCpedestal();
    }
  }
  
  return fSimPedestal + digit->GetAmp()*fSimGain ;        
  
  //  }  
}
//____________________________________________________________________________ 
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(){	
  //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
	24	// --- ROOT system ---
	25	#include "TClonesArray.h"
	26	// #include "TIter.h"
	27	#include "TParticle.h"
	28	#include "TTask.h"
	29	// --- Standard library ---
	30
	31	// --- AliRoot header files ---
	32	#include "AliPHOSJet.h"
e957fea8	33	#include "AliPHOSGeometry.h"
5240525e	34	#include "AliPHOSDigit.h"
	35	#include "AliPHOSGetter.h"
	36	#include "AliPHOSJetFinder.h"
	37	#include "AliPHOSDigitizer.h"
	38
	39	ClassImp(AliPHOSJetFinder)
	40
	41
	42	//____________________________________________________________________________
	43	AliPHOSJetFinder::AliPHOSJetFinder():TNamed("AliPHOSJetFinder","")
	44	{
0bc3b8ed	45	//Initialize jet parameters
0bc3b8ed	46	fNJets = 0 ;
5240525e	47	fMode = 0 ; //No iterations
	48	fStatusCode = -999 ; //no selection
	49
	50	fConeRad = 1.; //Radius of jet value?????????
	51	fMaxConeMove = 0.15 ; //value???????
	52	fMinConeMove = 0.05 ; //value???????
	53	fEtSeed = 4. ; //Energy of seed particle value??????????
	54	fEtMin = 5.; //minimal energy of jet value??????????
	55	fPrecBg = 0.00035 ; //value????????
	56	fSimGain = 0.;
	57	fSimPedestal = 0.;
	58
	59	fParticles = 0;
	60	fJets = 0 ;
	61
	62	}
	63
	64	//____________________________________________________________________________
	65	AliPHOSJetFinder::~AliPHOSJetFinder()
	66	{
0bc3b8ed	67	//dtor
5240525e	68	if(fParticles){
	69	delete fParticles ;
	70	fParticles = 0 ;
	71	}
	72	if(fJets){
	73	delete fJets ;
	74	fJets = 0 ;
	75	}
	76	}
	77
	78	//____________________________________________________________________________
	79	void AliPHOSJetFinder::FindJetsFromParticles(const TClonesArray * plist,TObjArray * jetslist)
	80	{
0bc3b8ed	81	//Find jets in the case without detector.
5240525e	82	TIter next(plist) ;
	83
	84	TIter nextJet(jetslist) ;
	85
	86	fNJets = 0 ;
	87	TParticle * p ;
	88	AliPHOSJet * jet ;
	89	//In this cicle we find number of jets and define approx. their directions
	90	//note, that we do not really add particles to jet (index =-1)
	91	while((p=static_cast<TParticle*>(next()))){
	92	if(fStatusCode==-999 \|\| p->GetStatusCode()==fStatusCode){
	93	if(p->Energy() >= fEtSeed){ //Energetic enough
	94	//cout << "p " << p->Energy() << endl ;
	95	//cout << "Status "<<fStatusCode<<" "<<p->GetName()<<" " << p->Energy() << " "<<p->Eta()<< " "<<p->Phi()<<endl ;
	96	Bool_t startnew = kTRUE ;
	97	//Do not start new jet if part of older jet
	98	nextJet.Reset() ;
	99	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	100	//jet->Print() ;
	101	if(jet->AcceptConeDeviation(p)){
	102	startnew = kFALSE ;
	103	//cout << "false" << endl ;
	104	break ;
	105	}
	106	}
	107	if(startnew){
	108	//cout << "new " << endl ;
	109	jet = new AliPHOSJet() ;
	110	jetslist->Add(jet) ;
	111	// jet = static_cast<AliPHOSJet*>(jetslist->Last()) ;
	112	jet->SetConeRadius(fConeRad) ;
	113	jet->SetMaxConeMove(fMaxConeMove) ;
	114	// jet->SetMinConeMove(fMinConeMove) ;
	115	jet->AddParticle(p,-1) ;
	116	fNJets++;
	117	}
	118	}
	119	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	120	if(jet->AcceptConeDeviation(p))
	121	jet->AddParticle(p,-1) ; //Just recalculate direction of jet
	122	}
	123	}
	124	}
	125
	126	//now calculate directions of jets using collected information
	127	nextJet.Reset() ;
	128	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
	129	jet->CalculateAll() ;
	130	if(jet->Energy() < fEtMin){
	131	jetslist->Remove(jet) ;
	132	delete jet ;
	133	}
	134	}
	135
	136	jetslist->Compress() ;
	137	//And finally, really add particles to jets
	138	for(Int_t iPart=0; iPart<plist->GetEntries();iPart++){
	139	p=static_cast<TParticle*>(plist->At(iPart)) ;
	140	if(fStatusCode == -999 \|\| p->GetStatusCode()==fStatusCode){
	141	Double_t dist = 999999. ; //big distance
	142	Int_t iJet = -1 ;
	143	for(Int_t i=0; i<jetslist->GetEntriesFast();i++){
	144	jet=static_cast<AliPHOSJet*>(jetslist->At(i)) ;
	145	if(jet->IsInCone(p)){
146	Double_t cdist = jet->DistanceToJet(p);
147	if(cdist < dist){
148	dist = cdist ;
149	iJet = i ;
150	}
151	}
152	}
153	if(iJet>-1)
154	(static_cast<AliPHOSJet*>(jetslist->At(iJet)))->AddParticle(p,iPart); //assign particle to closest jet
155	}
156	}
157
158	//Calculate jet parameters
159	nextJet.Reset() ;
160	while((jet=static_cast<AliPHOSJet*>(nextJet()))){
161	jet->CalculateAll() ;
162	}
163
164	}
165	//____________________________________________________________________________
166	void AliPHOSJetFinder::FindJetsFromDigits(const TClonesArray * digits, TObjArray * jets){
0bc3b8ed	167	//Find jets in the case witht detector at the level of digits.
5240525e	168	if(digits->GetEntries()==0){
	169	Error("JetsFromDigits","No entries in digits list \n") ;
	170	return ;
	171	}
	172
	173
	174	TClonesArray * copyDigits = new TClonesArray(*digits) ;
	175
	176	//Remove CPV digits if any
	177	AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("GPS2","") ;
	178	Int_t iDigit ;
	179	AliPHOSDigit * digit ;
	180	for(iDigit=copyDigits->GetEntries()-1;iDigit>=0;iDigit--){
	181	digit=static_cast<AliPHOSDigit *>(copyDigits->At(iDigit)) ;
	182	if(!geom->IsInEMC(digit->GetId()))
	183	copyDigits->RemoveAt(iDigit) ;
	184	else
	185	break ;
	186	}
	187	copyDigits->Compress() ;
	188
	189	Double_t totalEnergy = 0 ;
2fa01244	190	Float_t * energy = new Float_t[copyDigits->GetEntries()] ;
5240525e	191	//calculate average energy of digits
	192	//fill array of energies
	193	for(iDigit=0;iDigit<copyDigits->GetEntries();iDigit++){
	194	digit=static_cast<AliPHOSDigit *>(copyDigits->At(iDigit)) ;
	195	energy[iDigit] = Calibrate(digit) ;
	196	totalEnergy+=energy[iDigit] ;
	197	}
	198
	199	//Sort digits in decreasing energy.
2fa01244	200	Int_t * index = new Int_t[copyDigits->GetEntries()] ;
5240525e	201	TMath::Sort(copyDigits->GetEntries(),energy,index) ;
	202
	203	Double_t eAverage = totalEnergy/copyDigits->GetEntries() ;
	204	//remove digits below average energy
	205	for(iDigit=copyDigits->GetEntries()-1;iDigit>=0;iDigit--){
	206	digit=static_cast<AliPHOSDigit *>(copyDigits->At(index[iDigit])) ;
	207	if(energy[index[iDigit]] < eAverage)
	208	copyDigits->RemoveAt(iDigit) ;
	209	else
	210	break ;
	211	}
	212
	213
	214	AliPHOSJet * jet ;
	215	Int_t iIter = 0 ;
	216	while(iIter < 10){//less than 10 iterations
	217
	218	//while digits above seed
	219	for(Int_t ind=0;ind<copyDigits->GetEntriesFast();ind++){
	220	digit=static_cast<AliPHOSDigit*>(copyDigits->At(index[ind])) ;
	221	if(energy[index[ind]] > fEtSeed && digit){ //start new jet
	222	jet = new AliPHOSJet() ;
	223	Double_t e,eta,phi ;
	224	CalculateEEtaPhi(digit,e,eta,phi) ;
	225	jet->AddDigit(e,eta,phi,-1) ;
	226	//loop over left digits
	227	for(Int_t iDigit = 0 ; iDigit < copyDigits->GetEntries() ; iDigit++){
	228	if(iDigit!= ind){ //first digit already in jet
	229	digit = static_cast<AliPHOSDigit *>(copyDigits->At(iDigit));
	230	CalculateEEtaPhi(digit,e,eta,phi) ;
90cceaf6	231	if(jet->IsInCone(eta,phi) && //is cell in cone
5240525e	232	jet->AcceptConeDeviation(e,eta,phi)){//if cone does not move too much
	233	jet->AddDigit(e,eta,phi,-1) ; //accept new direction
	234	}
	235	}
	236	}//end of loop over cells
	237
	238	//accept all anused cells incide cone
	239	//note, that digits might be returned as anused later
	240	for(Int_t icell = 0 ; icell < copyDigits->GetEntries() ; icell++){
	241	digit = static_cast<AliPHOSDigit *>(copyDigits->At(icell));
90cceaf6	242	if(jet->IsInCone(eta,phi)){ //is cell in cone
5240525e	243	CalculateEEtaPhi(digit,e,eta,phi) ;
	244	jet->AddDigit(e,eta,phi,digit->GetIndexInList()) ;
	245	}
	246	}
	247
	248	//Accept Jet with Et > Et_min and remove all belonging digits
	249	if(jet->Energy()/TMath::CosH(jet->Eta()) > fEtMin){
	250	Int_t nIndxs ;
	251	const Int_t * indxs = jet->Indexs(nIndxs) ;
	252	for(Int_t i=0;i<nIndxs;i++){
	253	copyDigits->RemoveAt(indxs[i]) ;
	254	}
	255	jet->CalculateAll() ;
	256	jets->AddAt(jet,fNJets++);
	257	}
	258	else{ //remove jet and do not touch digits
	259	delete jet ;
	260	}
	261	}
	262	else{
	263	if(energy[index[ind]] < fEtSeed){ // no more digits above threshold left, return from loop
	264	break ;
	265	}
	266	}
	267
	268	iIter++ ;
	269	//calculate new energy of backrgound
	270	Double_t oldTotalEnergy = totalEnergy ;
	271	totalEnergy = 0 ;
	272	for(Int_t i=0 ; i<copyDigits->GetEntriesFast() ; i++){
	273	digit=static_cast<AliPHOSDigit*>(copyDigits->At(index[ind])) ;
	274	if(digit)
	275	totalEnergy+=energy[i] ;
	276	}
	277	if(!fMode \|\| (oldTotalEnergy != 0) &&
	278	(TMath::Abs(oldTotalEnergy - totalEnergy)/oldTotalEnergy < fPrecBg))
	279	break ;
	280	}
	281	}
2fa01244	282	delete [] energy;
2fa01244	283	delete [] index;
5240525e	284	copyDigits->Delete() ;
	285
	286	}
	287	//____________________________________________________________________________
	288	Double_t AliPHOSJetFinder::Calibrate(const AliPHOSDigit * digit){
	289	// if(fPedestals \|\| fGains ){ //use calibration data
	290	// if(!fPedestals \|\| !fGains ){
	291	// Error("Calibrate","Either Pedestals of Gains not set!") ;
	292	// return 0 ;
	293	// }
	294	// Float_t en=(digit->GetAmp() - fPedestals->Data(digit->GetId)()))*fGains->Data(digit->GetId()) ;
	295	// if(en>0)
	296	// return en ;
	297	// else
	298	// return 0. ;
	299	// }
	300	// else{ //simulation
	301	if(fSimGain==0){ //read simulation parameters
88cb7938	302	AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
5240525e	303	if(!gime){
	304	Error("Calibrate","Can not read Calibration parameters") ;
	305	return 0 ;
	306	}
	307	const TTask * task = gime->Digitizer() ;
	308	if(strcmp(task->IsA()->GetName(),"AliPHOSDigitizer")==0){
	309	const AliPHOSDigitizer * dig = static_cast<const AliPHOSDigitizer *>(task) ;
	310	fSimGain = dig->GetEMCchannel() ;
	311	fSimPedestal = dig->GetEMCpedestal();
	312	}
	313	}
	314
	315	return fSimPedestal + digit->GetAmp()*fSimGain ;
	316
	317	// }
	318	}
	319	//____________________________________________________________________________
	320	void AliPHOSJetFinder::CalculateEEtaPhi(const AliPHOSDigit * d,Double_t &e, Double_t &eta, Double_t &phi){
0bc3b8ed	321	//Calculate direction of the jet
5240525e	322	e=Calibrate(d) ;
	323	AliPHOSGeometry * geom = AliPHOSGeometry::GetInstance("GPS2","") ;
	324	TVector3 pos ;
	325	geom->RelPosInAlice(d->GetId(), pos) ;
	326	eta = pos.Eta() ;
	327	phi = pos.Phi() ;
	328	}
	329	//____________________________________________________________________________
90cceaf6	330	void AliPHOSJetFinder::Print(){
0bc3b8ed	331	//Print parameters of the found jet
5240525e	332	printf("\n --------------- AliPHOSJetFinder --------------- \n") ;
	333	printf(" Jets found .........%d \n",fNJets) ;
	334	printf(" Seed energy cut ....%f \n",fEtSeed) ;
	335	printf(" Cone radius ........%f \n",fConeRad) ;
	336	printf(" Minimal cone move ..%f \n",fMinConeMove) ;
	337	printf(" Maximal cone move ..%f \n",fMaxConeMove) ;
	338	printf("------------------------------------------------- \n") ;
	339	}