[u/mrichter/AliRoot.git] / PHOS / AliPHOSSDigitizer.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.                  *
 **************************************************************************/

/* $Id$ */

//_________________________________________________________________________
// This is a TTask that makes SDigits out of Hits
// The name of the TTask is also the title of the branch that will contain 
// the created SDigits
// The title of the TTAsk is the name of the file that contains the hits from
// which the SDigits are created
// A Summable Digits is the sum of all hits originating 
// from one primary in one active cell
// A threshold for assignment of the primary to SDigit is applied 
// SDigits are written to TreeS, branch "PHOS"
// AliPHOSSDigitizer with all current parameters is written 
// to TreeS branch "AliPHOSSDigitizer".
// Both branches have the same title. If necessary one can produce 
// another set of SDigits with different parameters. Two versions
// can be distunguished using titles of the branches.
// User case:
//  root [0] AliPHOSSDigitizer * s = new AliPHOSSDigitizer("galice.root")
//  Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
//  root [1] s->ExecuteTask()
//             // Makes SDigitis for all events stored in galice.root
//  root [2] s->SetPedestalParameter(0.001)
//             // One can change parameters of digitization
// root [3] s->SetSDigitsBranch("Pedestal 0.001")
//             // and write them into the new branch
// root [4] s->ExecuteTask("deb all tim")
//             // available parameters:
//             deb - print # of produced SDigitis
//             deb all  - print # and list of produced SDigits
//             tim - print benchmarking information
//
//*-- Author :  Dmitri Peressounko (SUBATECH & KI) 
//////////////////////////////////////////////////////////////////////////////


// --- ROOT system ---
#include "TFile.h"
#include "TTask.h"
#include "TTree.h"
#include "TSystem.h"
#include "TROOT.h"
#include "TFolder.h"
#include "TBenchmark.h"
// --- Standard library ---
#include <iomanip.h>

// --- AliRoot header files ---
#include "AliRun.h"
#include "AliPHOSDigit.h"
#include "AliPHOSGeometry.h"
#include "AliPHOSGetter.h"
#include "AliPHOSHit.h"
#include "AliPHOSSDigitizer.h"


ClassImp(AliPHOSSDigitizer)

           
//____________________________________________________________________________ 
  AliPHOSSDigitizer::AliPHOSSDigitizer():TTask("","") 
{
  // ctor
  fA             = 0;
  fB             = 10000000.;
  fPrimThreshold = 0.01 ;
  fSDigitsInRun  = 0 ; 
}

//____________________________________________________________________________ 
AliPHOSSDigitizer::AliPHOSSDigitizer(const char * headerFile, const char * sDigitsTitle):TTask(sDigitsTitle, headerFile)
{
  // ctor
  fA             = 0;
  fB             = 10000000.;
  fPrimThreshold = 0.01 ;
  fSDigitsInRun  = 0 ; 
  Init();
}


//____________________________________________________________________________ 
void AliPHOSSDigitizer::Init()
{
  // Initialization: open root-file, allocate arrays for hits and sdigits,
  // attach task SDigitizer to the list of PHOS tasks
  // 
  // Initialization can not be done in the default constructor
  //============================================================= YS
  //  The initialisation is now done by AliPHOSGetter
  
  if( strcmp(GetTitle(), "") == 0 )
    SetTitle("galice.root") ;
  
  AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), GetName()) ;     
  if ( gime == 0 ) {
    cerr << "ERROR: AliPHOSSDigitizer::Init -> Could not obtain the Getter object !" << endl ; 
    return ;
  } 
  
  gime->PostSDigits( GetName(), GetTitle() ) ; 

  TString sdname(GetName() );
  sdname.Append(":") ;
  sdname.Append(GetTitle() ) ;
  SetName(sdname) ;
  gime->PostSDigitizer(this) ;
     
}

//____________________________________________________________________________
void AliPHOSSDigitizer::Exec(Option_t *option) 
{ 
  // Collects all hits in the same active volume into digit
  if( strcmp(GetName(), "") == 0 )
    Init() ;
  
  if (strstr(option, "print") ) {
    Print("") ; 
    return ; 
  }

  if(strstr(option,"tim"))
    gBenchmark->Start("PHOSSDigitizer");

  //Check, if this branch already exits
  gAlice->GetEvent(0) ;

  TString sdname(GetName()) ;
  sdname.Remove(sdname.Index(GetTitle())-1) ;
  
  if(gAlice->TreeS() ) {
    TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
    TIter next(lob) ; 
    TBranch * branch = 0 ;  
    Bool_t phosfound = kFALSE, sdigitizerfound = kFALSE ; 
    
    while ( (branch = (static_cast<TBranch*>(next()))) && (!phosfound || !sdigitizerfound) ) {
      if ( (strcmp(branch->GetName(), "PHOS")==0) && (strcmp(branch->GetTitle(), GetName())==0) ) 
	phosfound = kTRUE ;
      
      else if ( (strcmp(branch->GetName(), "AliPHOSSDigitizer")==0) && (strcmp(branch->GetTitle(), GetName())==0) ) 
	sdigitizerfound = kTRUE ; 
    }
    
    if ( phosfound || sdigitizerfound ) {
      cerr << "WARNING: AliPHOSSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName() 
	   << " already exits" << endl ;
      return ; 
    }   
  }  

  AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; 

  Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ; 
  
  Int_t ievent ;
  for(ievent = 0; ievent < nevents; ievent++){
    gime->Event(ievent,"H") ;
    const TClonesArray * hits = gime->Hits() ;
    TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
    sdigits->Clear();
    Int_t nSdigits = 0 ;
    
    
    //Now make SDigits from hits, for PHOS it is the same, so just copy    

//******************** CHECK HERE
//YS DOES NOT UNDERSTAND THE NEED FOR THE FOLLOWING LOOP
//     Int_t itrack ;
//     for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
//       //=========== Get the PHOS branch from Hits Tree for the Primary track itrack
//       gime->Track(itrack) ;
      Int_t i;
      for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
	AliPHOSHit * hit = dynamic_cast<AliPHOSHit *>(hits->At(i)) ;
	// Assign primary number only if contribution is significant
	
	if( hit->GetEnergy() > fPrimThreshold)
	  new((*sdigits)[nSdigits]) AliPHOSDigit(hit->GetPrimary(),hit->GetId(),
						  Digitize(hit->GetEnergy()), hit->GetTime()) ;
	else
	  new((*sdigits)[nSdigits]) AliPHOSDigit( -1              , hit->GetId(), 
						   Digitize(hit->GetEnergy()), hit->GetTime()) ;
	nSdigits++ ;	
	
      }
//    } // loop over tracks
    
    sdigits->Sort() ;
    
    nSdigits = sdigits->GetEntriesFast() ;
    fSDigitsInRun += nSdigits ;  
    sdigits->Expand(nSdigits) ;
//    Int_t i ;
    for (i = 0 ; i < nSdigits ; i++) { 
      AliPHOSDigit * digit = dynamic_cast<AliPHOSDigit *>(sdigits->At(i)) ; 
      digit->SetIndexInList(i) ;     
    }

    if(gAlice->TreeS() == 0)
      gAlice->MakeTree("S") ;
    
    //Make (if necessary) branches    
    char * file =0;
    if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
      file = new char[strlen(gAlice->GetBaseFile())+20] ;
      sprintf(file,"%s/PHOS.SDigits.root",gAlice->GetBaseFile()) ;
    }
    
    TDirectory *cwd = gDirectory;
    
    //First list of sdigits
    Int_t bufferSize = 32000 ;    
    TBranch * sdigitsBranch = gAlice->TreeS()->Branch("PHOS",&sdigits,bufferSize);
    sdigitsBranch->SetTitle(sdname);
    if (file) {
      sdigitsBranch->SetFile(file);
      TIter next( sdigitsBranch->GetListOfBranches());
      TBranch * subbr;
      while ((subbr=static_cast<TBranch*>(next()))) {
	subbr->SetFile(file);
      }   
      cwd->cd();
    } 
      
    //Next - SDigitizer
    Int_t splitlevel = 0 ;
    AliPHOSSDigitizer * sd = this ;
    TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliPHOSSDigitizer","AliPHOSSDigitizer",
					       &sd,bufferSize,splitlevel); 
    sdigitizerBranch->SetTitle(sdname);
    if (file) {
      sdigitizerBranch->SetFile(file);
      TIter next( sdigitizerBranch->GetListOfBranches());
      TBranch * subbr ;
      while ((subbr=static_cast<TBranch*>(next()))) {
	subbr->SetFile(file);
      }   
      cwd->cd();
      delete [] file;
    }

    sdigitsBranch->Fill() ; 
    gAlice->TreeS()->AutoSave() ;
    
    if(strstr(option,"deb"))
      PrintSDigits(option) ;
    
  }
  
  if(strstr(option,"tim")){
    gBenchmark->Stop("PHOSSDigitizer");
    cout << "AliPHOSSDigitizer:" << endl ;
    cout << "   took " << gBenchmark->GetCpuTime("PHOSSDigitizer") << " seconds for SDigitizing " 
	 <<  gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents << " seconds per event " << endl ;
    cout << endl ;
  }
  
  
}
//__________________________________________________________________
void AliPHOSSDigitizer::SetSDigitsBranch(const char * title )
{
  // Setting title to branch SDigits 

  TString stitle(title) ;

  // check if branch with title already exists
  TBranch * sdigitsBranch    = 
    static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("PHOS")) ; 
  TBranch * sdigitizerBranch =  
    static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliPHOSSDigitizer")) ;
  const char * sdigitsTitle    = sdigitsBranch ->GetTitle() ;  
  const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
  if ( stitle.CompareTo(sdigitsTitle)==0 || stitle.CompareTo(sdigitizerTitle)==0 ){
    cerr << "ERROR: AliPHOSSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
    return ;
  }
  
  cout << "AliPHOSSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;

  SetName(title) ; 
    
  // Post to the WhiteBoard
  AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; 
  gime->PostSDigits( title, GetTitle()) ; 
}

//__________________________________________________________________
void AliPHOSSDigitizer::Print(Option_t* option)const
{
  // Prints parameters of SDigitizer
  cout << "------------------- "<< GetName() << " -------------" << endl ;
  cout << "   Writing SDigits to branch with title  " << GetName() << endl ;
  cout << "   with digitization parameters  A = " << fA << endl ;
  cout << "                                 B = " << fB << endl ;
  cout << "   Threshold for Primary assignment= " << fPrimThreshold << endl ; 
  cout << "---------------------------------------------------"<<endl ;
  
}
//__________________________________________________________________
Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
{
  // Equal operator.
  // SDititizers are equal if their pedestal, slope and threshold are equal

  if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
    return kTRUE ;
  else
    return kFALSE ;
}
//__________________________________________________________________
//__________________________________________________________________
void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
{
  // Prints list of digits produced in the current pass of AliPHOSDigitizer


  AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; 
  TString sdname(GetName()) ;
  sdname.Remove(sdname.Index(GetTitle())-1) ;
  const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ; 

  cout << "AliPHOSSDigitiser: event " << gAlice->GetEvNumber() << endl ;
  cout << "      Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
  cout << endl ;
  if(strstr(option,"all")||strstr(option,"EMC")){
    
    //loop over digits
    AliPHOSDigit * digit;
    cout << "EMC sdigits " << endl ;
    cout << "Digit Id    Amplitude     Index     Nprim  Primaries list " <<  endl;      
    Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
    Int_t index ;
    for (index = 0 ; (index < sdigits->GetEntriesFast()) && 
	 (((AliPHOSDigit * )  sdigits->At(index))->GetId() <= maxEmc) ; index++) {
      digit = (AliPHOSDigit * )  sdigits->At(index) ;
      if(digit->GetNprimary() == 0) continue;
      cout << setw(6)  <<  digit->GetId() << "   "  << 	setw(10)  <<  digit->GetAmp() <<   "    "  
	   << setw(6)  <<  digit->GetIndexInList() << "    "   
	   << setw(5)  <<  digit->GetNprimary() <<"    ";
      
      Int_t iprimary;
      for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
	cout << setw(5)  <<  digit->GetPrimary(iprimary+1) << "    ";
      cout << endl;  	 
    }    
    cout << endl;
  }

  if(strstr(option,"all")||strstr(option,"CPV")){
    
    //loop over CPV digits
    AliPHOSDigit * digit;
    cout << "CPV sdigits " << endl ;
    cout << "Digit Id    Amplitude     Index     Nprim  Primaries list " <<  endl;      
    Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
    Int_t index ;
    for (index = 0 ; index < sdigits->GetEntriesFast(); index++) {
      digit = (AliPHOSDigit * )  sdigits->At(index) ;
      if(digit->GetId() > maxEmc){
	cout << setw(6)  <<  digit->GetId() << "   "  << 	setw(10)  <<  digit->GetAmp() <<   "    "  
	     << setw(6)  <<  digit->GetIndexInList() << "    "   
	     << setw(5)  <<  digit->GetNprimary() <<"    ";
	
	Int_t iprimary;
	for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
	  cout << setw(5)  <<  digit->GetPrimary(iprimary+1) << "    ";
	cout << endl;  	 
      }    
    }
  }

}

//____________________________________________________________________________ 
void AliPHOSSDigitizer::UseHitsFrom(const char * filename)
{
  SetTitle(filename) ; 
  Init() ; 
}
Commit	Line	Data
990119d6	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	/* $Id$ */
	17
	18	//_________________________________________________________________________
7acf6008	19	// This is a TTask that makes SDigits out of Hits
7b7c1533	20	// The name of the TTask is also the title of the branch that will contain
	21	// the created SDigits
	22	// The title of the TTAsk is the name of the file that contains the hits from
	23	// which the SDigits are created
7acf6008	24	// A Summable Digits is the sum of all hits originating
	25	// from one primary in one active cell
	26	// A threshold for assignment of the primary to SDigit is applied
	27	// SDigits are written to TreeS, branch "PHOS"
	28	// AliPHOSSDigitizer with all current parameters is written
	29	// to TreeS branch "AliPHOSSDigitizer".
f035f6ce	30	// Both branches have the same title. If necessary one can produce
	31	// another set of SDigits with different parameters. Two versions
	32	// can be distunguished using titles of the branches.
	33	// User case:
a4e98857	34	// root [0] AliPHOSSDigitizer * s = new AliPHOSSDigitizer("galice.root")
	35	// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
	36	// root [1] s->ExecuteTask()
f035f6ce	37	// // Makes SDigitis for all events stored in galice.root
a4e98857	38	// root [2] s->SetPedestalParameter(0.001)
f035f6ce	39	// // One can change parameters of digitization
3de072dc	40	// root [3] s->SetSDigitsBranch("Pedestal 0.001")
f035f6ce	41	// // and write them into the new branch
3de072dc	42	// root [4] s->ExecuteTask("deb all tim")
f035f6ce	43	// // available parameters:
	44	// deb - print # of produced SDigitis
	45	// deb all - print # and list of produced SDigits
	46	// tim - print benchmarking information
990119d6	47	//
	48	//*-- Author : Dmitri Peressounko (SUBATECH & KI)
	49	//////////////////////////////////////////////////////////////////////////////
	50
f035f6ce	51
990119d6	52	// --- ROOT system ---
7acf6008	53	#include "TFile.h"
990119d6	54	#include "TTask.h"
	55	#include "TTree.h"
	56	#include "TSystem.h"
7acf6008	57	#include "TROOT.h"
	58	#include "TFolder.h"
	59	#include "TBenchmark.h"
990119d6	60	// --- Standard library ---
7acf6008	61	#include <iomanip.h>
990119d6	62
990119d6	63	// --- AliRoot header files ---
7acf6008	64	#include "AliRun.h"
990119d6	65	#include "AliPHOSDigit.h"
a6eedfad	66	#include "AliPHOSGeometry.h"
7b7c1533	67	#include "AliPHOSGetter.h"
990119d6	68	#include "AliPHOSHit.h"
990119d6	69	#include "AliPHOSSDigitizer.h"
990119d6	70
990119d6	71
	72	ClassImp(AliPHOSSDigitizer)
	73
	74
	75	//____________________________________________________________________________
7b7c1533	76	AliPHOSSDigitizer::AliPHOSSDigitizer():TTask("","")
990119d6	77	{
990119d6	78	// ctor
2bd5457f	79	fA = 0;
2bd5457f	80	fB = 10000000.;
990119d6	81	fPrimThreshold = 0.01 ;
2b60655b	82	fSDigitsInRun = 0 ;
990119d6	83	}
7acf6008	84
990119d6	85	//____________________________________________________________________________
7b7c1533	86	AliPHOSSDigitizer::AliPHOSSDigitizer(const char * headerFile, const char * sDigitsTitle):TTask(sDigitsTitle, headerFile)
990119d6	87	{
990119d6	88	// ctor
2bd5457f	89	fA = 0;
2bd5457f	90	fB = 10000000.;
990119d6	91	fPrimThreshold = 0.01 ;
2b60655b	92	fSDigitsInRun = 0 ;
2bd5457f	93	Init();
990119d6	94	}
990119d6	95
7b7c1533	96
7acf6008	97	//____________________________________________________________________________
a4e98857	98	void AliPHOSSDigitizer::Init()
a4e98857	99	{
2bd5457f	100	// Initialization: open root-file, allocate arrays for hits and sdigits,
	101	// attach task SDigitizer to the list of PHOS tasks
	102	//
a4e98857	103	// Initialization can not be done in the default constructor
7b7c1533	104	//============================================================= YS
	105	// The initialisation is now done by AliPHOSGetter
	106
	107	if( strcmp(GetTitle(), "") == 0 )
	108	SetTitle("galice.root") ;
	109
	110	AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), GetName()) ;
	111	if ( gime == 0 ) {
	112	cerr << "ERROR: AliPHOSSDigitizer::Init -> Could not obtain the Getter object !" << endl ;
	113	return ;
	114	}
	115
5ad40cd6	116	gime->PostSDigits( GetName(), GetTitle() ) ;
	117
	118	TString sdname(GetName() );
	119	sdname.Append(":") ;
	120	sdname.Append(GetTitle() ) ;
	121	SetName(sdname) ;
	122	gime->PostSDigitizer(this) ;
a2d8b8a4	123
7acf6008	124	}
7b7c1533	125
990119d6	126	//____________________________________________________________________________
a4e98857	127	void AliPHOSSDigitizer::Exec(Option_t *option)
	128	{
	129	// Collects all hits in the same active volume into digit
7b7c1533	130	if( strcmp(GetName(), "") == 0 )
7acf6008	131	Init() ;
7b7c1533	132
	133	if (strstr(option, "print") ) {
	134	Print("") ;
	135	return ;
	136	}
990119d6	137
7acf6008	138	if(strstr(option,"tim"))
7acf6008	139	gBenchmark->Start("PHOSSDigitizer");
7b7c1533	140
7b7c1533	141	//Check, if this branch already exits
5ad40cd6	142	gAlice->GetEvent(0) ;
a2d8b8a4	143
	144	TString sdname(GetName()) ;
	145	sdname.Remove(sdname.Index(GetTitle())-1) ;
	146
5ad40cd6	147	if(gAlice->TreeS() ) {
7a9d98f9	148	TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
5ad40cd6	149	TIter next(lob) ;
	150	TBranch * branch = 0 ;
	151	Bool_t phosfound = kFALSE, sdigitizerfound = kFALSE ;
7b7c1533	152
7a9d98f9	153	while ( (branch = (static_cast<TBranch*>(next()))) && (!phosfound \|\| !sdigitizerfound) ) {
5ad40cd6	154	if ( (strcmp(branch->GetName(), "PHOS")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
	155	phosfound = kTRUE ;
	156
	157	else if ( (strcmp(branch->GetName(), "AliPHOSSDigitizer")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
	158	sdigitizerfound = kTRUE ;
	159	}
	160
	161	if ( phosfound \|\| sdigitizerfound ) {
	162	cerr << "WARNING: AliPHOSSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName()
	163	<< " already exits" << endl ;
	164	return ;
	165	}
	166	}
7b7c1533	167
7b7c1533	168	AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
7b7c1533	169
7b7c1533	170	Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
990119d6	171
990119d6	172	Int_t ievent ;
7b7c1533	173	for(ievent = 0; ievent < nevents; ievent++){
5ad40cd6	174	gime->Event(ievent,"H") ;
017addb3	175	const TClonesArray * hits = gime->Hits() ;
5ad40cd6	176	TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
7b7c1533	177	sdigits->Clear();
990119d6	178	Int_t nSdigits = 0 ;
990119d6	179
990119d6	180
7b7c1533	181	//Now make SDigits from hits, for PHOS it is the same, so just copy
017addb3	182
	183	//******************** CHECK HERE
	184	//YS DOES NOT UNDERSTAND THE NEED FOR THE FOLLOWING LOOP
	185	// Int_t itrack ;
	186	// for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
	187	// //=========== Get the PHOS branch from Hits Tree for the Primary track itrack
	188	// gime->Track(itrack) ;
990119d6	189	Int_t i;
7b7c1533	190	for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
7a9d98f9	191	AliPHOSHit * hit = dynamic_cast<AliPHOSHit *>(hits->At(i)) ;
990119d6	192	// Assign primary number only if contribution is significant
9688c1dd	193
990119d6	194	if( hit->GetEnergy() > fPrimThreshold)
9688c1dd	195	new((*sdigits)[nSdigits]) AliPHOSDigit(hit->GetPrimary(),hit->GetId(),
9688c1dd	196	Digitize(hit->GetEnergy()), hit->GetTime()) ;
990119d6	197	else
9688c1dd	198	new((*sdigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(),
	199	Digitize(hit->GetEnergy()), hit->GetTime()) ;
	200	nSdigits++ ;
990119d6	201
9688c1dd	202	}
017addb3	203	// } // loop over tracks
990119d6	204
7b7c1533	205	sdigits->Sort() ;
990119d6	206
7b7c1533	207	nSdigits = sdigits->GetEntriesFast() ;
69866bef	208	fSDigitsInRun += nSdigits ;
7b7c1533	209	sdigits->Expand(nSdigits) ;
017addb3	210	// Int_t i ;
990119d6	211	for (i = 0 ; i < nSdigits ; i++) {
7a9d98f9	212	AliPHOSDigit * digit = dynamic_cast<AliPHOSDigit *>(sdigits->At(i)) ;
990119d6	213	digit->SetIndexInList(i) ;
990119d6	214	}
7acf6008	215
	216	if(gAlice->TreeS() == 0)
	217	gAlice->MakeTree("S") ;
	218
7acf6008	219	//Make (if necessary) branches
	220	char * file =0;
	221	if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
	222	file = new char[strlen(gAlice->GetBaseFile())+20] ;
	223	sprintf(file,"%s/PHOS.SDigits.root",gAlice->GetBaseFile()) ;
	224	}
	225
	226	TDirectory *cwd = gDirectory;
	227
	228	//First list of sdigits
	229	Int_t bufferSize = 32000 ;
7b7c1533	230	TBranch * sdigitsBranch = gAlice->TreeS()->Branch("PHOS",&sdigits,bufferSize);
5ad40cd6	231	sdigitsBranch->SetTitle(sdname);
7acf6008	232	if (file) {
	233	sdigitsBranch->SetFile(file);
	234	TIter next( sdigitsBranch->GetListOfBranches());
761e34c0	235	TBranch * subbr;
7a9d98f9	236	while ((subbr=static_cast<TBranch*>(next()))) {
761e34c0	237	subbr->SetFile(file);
7acf6008	238	}
	239	cwd->cd();
	240	}
	241
7b7c1533	242	//Next - SDigitizer
7acf6008	243	Int_t splitlevel = 0 ;
7acf6008	244	AliPHOSSDigitizer * sd = this ;
7b7c1533	245	TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliPHOSSDigitizer","AliPHOSSDigitizer",
7acf6008	246	&sd,bufferSize,splitlevel);
5ad40cd6	247	sdigitizerBranch->SetTitle(sdname);
7acf6008	248	if (file) {
	249	sdigitizerBranch->SetFile(file);
	250	TIter next( sdigitizerBranch->GetListOfBranches());
761e34c0	251	TBranch * subbr ;
7a9d98f9	252	while ((subbr=static_cast<TBranch*>(next()))) {
761e34c0	253	subbr->SetFile(file);
7acf6008	254	}
7acf6008	255	cwd->cd();
780a31c1	256	delete [] file;
7acf6008	257	}
7acf6008	258
42d2745f	259	sdigitsBranch->Fill() ;
42d2745f	260	gAlice->TreeS()->AutoSave() ;
7acf6008	261
	262	if(strstr(option,"deb"))
	263	PrintSDigits(option) ;
	264
990119d6	265	}
7acf6008	266
	267	if(strstr(option,"tim")){
	268	gBenchmark->Stop("PHOSSDigitizer");
	269	cout << "AliPHOSSDigitizer:" << endl ;
	270	cout << " took " << gBenchmark->GetCpuTime("PHOSSDigitizer") << " seconds for SDigitizing "
7b7c1533	271	<< gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents << " seconds per event " << endl ;
7acf6008	272	cout << endl ;
	273	}
	274
	275
990119d6	276	}
990119d6	277	//__________________________________________________________________
a4e98857	278	void AliPHOSSDigitizer::SetSDigitsBranch(const char * title )
	279	{
	280	// Setting title to branch SDigits
7b7c1533	281
	282	TString stitle(title) ;
	283
	284	// check if branch with title already exists
7a9d98f9	285	TBranch * sdigitsBranch =
	286	static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("PHOS")) ;
	287	TBranch * sdigitizerBranch =
	288	static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliPHOSSDigitizer")) ;
7b7c1533	289	const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
	290	const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
	291	if ( stitle.CompareTo(sdigitsTitle)==0 \|\| stitle.CompareTo(sdigitizerTitle)==0 ){
	292	cerr << "ERROR: AliPHOSSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
	293	return ;
	294	}
	295
	296	cout << "AliPHOSSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;
	297
	298	SetName(title) ;
	299
	300	// Post to the WhiteBoard
	301	AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
5ad40cd6	302	gime->PostSDigits( title, GetTitle()) ;
990119d6	303	}
7b7c1533	304
990119d6	305	//__________________________________________________________________
a4e98857	306	void AliPHOSSDigitizer::Print(Option_t* option)const
	307	{
	308	// Prints parameters of SDigitizer
990119d6	309	cout << "------------------- "<< GetName() << " -------------" << endl ;
7a9d98f9	310	cout << " Writing SDigits to branch with title " << GetName() << endl ;
7acf6008	311	cout << " with digitization parameters A = " << fA << endl ;
	312	cout << " B = " << fB << endl ;
	313	cout << " Threshold for Primary assignment= " << fPrimThreshold << endl ;
990119d6	314	cout << "---------------------------------------------------"<<endl ;
7acf6008	315
990119d6	316	}
990119d6	317	//__________________________________________________________________
a4e98857	318	Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
a4e98857	319	{
3de072dc	320	// Equal operator.
	321	// SDititizers are equal if their pedestal, slope and threshold are equal
	322
990119d6	323	if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
	324	return kTRUE ;
	325	else
	326	return kFALSE ;
	327	}
7acf6008	328	//__________________________________________________________________
a6eedfad	329	//__________________________________________________________________
a4e98857	330	void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
	331	{
	332	// Prints list of digits produced in the current pass of AliPHOSDigitizer
7b7c1533	333
a6eedfad	334
7b7c1533	335	AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
5ad40cd6	336	TString sdname(GetName()) ;
5ad40cd6	337	sdname.Remove(sdname.Index(GetTitle())-1) ;
017addb3	338	const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
7b7c1533	339
a6eedfad	340	cout << "AliPHOSSDigitiser: event " << gAlice->GetEvNumber() << endl ;
a6eedfad	341	cout << " Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
7acf6008	342	cout << endl ;
a6eedfad	343	if(strstr(option,"all")\|\|strstr(option,"EMC")){
7acf6008	344
	345	//loop over digits
	346	AliPHOSDigit * digit;
a6eedfad	347	cout << "EMC sdigits " << endl ;
	348	cout << "Digit Id Amplitude Index Nprim Primaries list " << endl;
	349	Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
7acf6008	350	Int_t index ;
a6eedfad	351	for (index = 0 ; (index < sdigits->GetEntriesFast()) &&
a6eedfad	352	(((AliPHOSDigit * ) sdigits->At(index))->GetId() <= maxEmc) ; index++) {
7b7c1533	353	digit = (AliPHOSDigit * ) sdigits->At(index) ;
a6eedfad	354	if(digit->GetNprimary() == 0) continue;
	355	cout << setw(6) << digit->GetId() << " " << setw(10) << digit->GetAmp() << " "
	356	<< setw(6) << digit->GetIndexInList() << " "
	357	<< setw(5) << digit->GetNprimary() <<" ";
7acf6008	358
	359	Int_t iprimary;
	360	for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
a6eedfad	361	cout << setw(5) << digit->GetPrimary(iprimary+1) << " ";
7acf6008	362	cout << endl;
a6eedfad	363	}
	364	cout << endl;
	365	}
	366
	367	if(strstr(option,"all")\|\|strstr(option,"CPV")){
7acf6008	368
a6eedfad	369	//loop over CPV digits
	370	AliPHOSDigit * digit;
	371	cout << "CPV sdigits " << endl ;
	372	cout << "Digit Id Amplitude Index Nprim Primaries list " << endl;
	373	Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
	374	Int_t index ;
	375	for (index = 0 ; index < sdigits->GetEntriesFast(); index++) {
	376	digit = (AliPHOSDigit * ) sdigits->At(index) ;
	377	if(digit->GetId() > maxEmc){
	378	cout << setw(6) << digit->GetId() << " " << setw(10) << digit->GetAmp() << " "
	379	<< setw(6) << digit->GetIndexInList() << " "
	380	<< setw(5) << digit->GetNprimary() <<" ";
	381
	382	Int_t iprimary;
	383	for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
	384	cout << setw(5) << digit->GetPrimary(iprimary+1) << " ";
	385	cout << endl;
	386	}
	387	}
7acf6008	388	}
a6eedfad	389
7acf6008	390	}
7b7c1533	391
	392	//____________________________________________________________________________
	393	void AliPHOSSDigitizer::UseHitsFrom(const char * filename)
	394	{
	395	SetTitle(filename) ;
	396	Init() ;
	397	}