[u/mrichter/AliRoot.git] / EMCAL / AliEMCALSDigitizer.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
// A Summable Digits is the sum of all hits originating 
// from one in one tower of the EMCAL 
// A threshold for assignment of the primary to SDigit is applied 
// SDigits are written to TreeS, branch "EMCAL"
// AliEMCALSDigitizer with all current parameters is written 
// to TreeS branch "AliEMCALSDigitizer".
// 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] AliEMCALSDigitizer * s = new AliEMCALSDigitizer("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("Redestal 0.001")
//             // and write them into the new branch
// root [4] s->ExeciteTask("deb all tim")
//             // available parameters:
//             deb - print # of produced SDigitis
//             deb all  - print # and list of produced SDigits
//             tim - print benchmarking information
//
//*-- Author : Sahal Yacoob (LBL)
// based on  : AliPHOSSDigitzer 
//////////////////////////////////////////////////////////////////////////////


// --- 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 "AliEMCALDigit.h"
#include "AliEMCALHit.h"
#include "AliEMCALSDigitizer.h"
#include "AliEMCALGeometry.h"
#include "AliEMCALv1.h"
#include "AliEMCALGetter.h"

ClassImp(AliEMCALSDigitizer)

           
//____________________________________________________________________________ 
  AliEMCALSDigitizer::AliEMCALSDigitizer():TTask("AliEMCALSDigitizer","") 
{
  // ctor
  fA = 0;
  fB = 10000000. ;
  fPrimThreshold = 0.01 ;
  fNevents = 0 ;     
  fSDigits = 0 ;
  fHits = 0 ;
  fIsInitialized = kFALSE ;

}

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

//____________________________________________________________________________ 
AliEMCALSDigitizer::~AliEMCALSDigitizer()
{
  // dtor
  if(fSDigits)
    delete fSDigits ;
  if(fHits)
    delete fHits ;
}
//____________________________________________________________________________ 
void AliEMCALSDigitizer::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 the getter

if( strcmp(GetTitle(), "") == 0 )
    SetTitle("galice.root") ;
  
  AliEMCALGetter * gime = AliEMCALGetter::GetInstance(GetTitle(), GetName(), "update") ;     
  if ( gime == 0 ) {
    cerr << "ERROR: AliEMCALSDigitizer::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) ;
 
  // create a folder on the white board //YSAlice/WhiteBoard/SDigits/EMCAL/headerFile/sdigitsTitle
 
 }
//____________________________________________________________________________
void AliEMCALSDigitizer::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("EMCALSDigitizer");
  //Check, if this branch already exits
  gAlice->GetEvent(0) ;
  if(gAlice->TreeS() ) {
    TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
    TIter next(lob) ; 
    TBranch * branch = 0 ;  
    Bool_t emcalfound = kFALSE, sdigitizerfound = kFALSE ; 
    
    while ( (branch = (static_cast<TBranch*>(next()))) && (!emcalfound || !sdigitizerfound) ) {
      if ( (strcmp(branch->GetName(), "EMCAL")==0) && (strcmp(branch->GetTitle(), GetName())==0) ) 
	emcalfound = kTRUE ;
      
      else if ( (strcmp(branch->GetName(), "AliEMCALSDigitizer")==0) && (strcmp(branch->GetTitle(), GetName())==0) ) 
	sdigitizerfound = kTRUE ; 
    }
    
    if ( emcalfound || sdigitizerfound ) {
      cerr << "WARNING: AliEMCALSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName() 
	   << " already exits" << endl ;
      return ; 
    }   
  }  
  TString sdname(GetName()) ;
  sdname.Remove(sdname.Index(GetTitle())-1) ;
  AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;  
  const AliEMCALGeometry *geom = gime->EMCALGeometry();
  Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ; 
  
  Int_t ievent ;
  for(ievent = 0; ievent < nevents; ievent++){
    gime->Event(ievent,"H") ;
    const TClonesArray * fHits = gime->Hits() ;
    TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
    sdigits->Clear();
    Int_t nSdigits = 0 ;

  //Collects all hits in the same active volume into digit
  
  
    //Now made SDigits from hits, for EMCAL it is the same, so just copy    
    //  Int_t itrack ;
    // for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
    //gime->Track(itrack);  
      //=========== Get the EMCAL branch from Hits Tree for the Primary track itrack
      
      
      Int_t i;
      for ( i = 0 ; i < fHits->GetEntries() ; i++ ) {
	AliEMCALHit * hit = (AliEMCALHit*)fHits->At(i) ;
        AliEMCALDigit  * curSDigit = 0  ;
        AliEMCALDigit * sdigit ;
        Bool_t newsdigit = kTRUE; 
	// Assign primary number only if contribution is significant
        if( hit->GetEnergy() > fPrimThreshold)
	  curSDigit =  new AliEMCALDigit( hit->GetPrimary(),
					  hit->GetIparent(),Layer2TowerID(hit->GetId(),kFALSE), 
					  Digitize( hit->GetEnergy() ) , 
					  hit->GetTime()) ;
        else
	  curSDigit =  new AliEMCALDigit( -1               , 
					  -1               ,
					  Layer2TowerID(hit->GetId(),kFALSE), 
					  Digitize( hit->GetEnergy() ) , 
					  hit->GetTime() ) ;
	//cout << "Hit ID = " <<hit->GetId() << endl ; 
	//cout << "ID for detector = " << curSDigit->GetId() << endl ;  
	//  cout << hit->GetEnergy() << " - hit energy   -   Digit Energy - " << curSDigit->GetAmp() << endl;
	for(Int_t check= 0; check < nSdigits ; check++) {
          sdigit = (AliEMCALDigit *)sdigits->At(check);
          if( sdigit->GetId() == curSDigit->GetId())   
            {// cout << "SDigit - Get Amp  " << sdigit->GetAmp() << endl ; 
	      *sdigit = *sdigit + *curSDigit ;
              newsdigit = kFALSE;
	      //  cout << " and after addition " << sdigit->GetAmp() << endl ; 
	    }
	}
	if (newsdigit) 
	  { new((*sdigits)[nSdigits])  AliEMCALDigit(*curSDigit);
	  nSdigits++ ;  
	  //cout << "Detector nsdigits = " << nSdigits << endl ;
	  }
        newsdigit = kTRUE;  
	
	
        if( hit->GetEnergy() > fPrimThreshold)
	  curSDigit =  new AliEMCALDigit( hit->GetPrimary(), 
					  hit->GetIparent(),
					  Layer2TowerID(hit->GetId(),kTRUE) , 
					  Digitize( hit->GetEnergy() ), 
					  hit->GetTime( ) ) ;
        else
	  curSDigit =  new AliEMCALDigit( -1               , 
					  -1               ,
					  Layer2TowerID(hit->GetId(),kTRUE), 
					  Digitize( hit->GetEnergy() ), 
					  hit->GetTime() ) ;
	
	if((hit->GetId()/geom->GetNPhi()) < (2*geom->GetNZ())) 
	  { //cout << "ID for Preshower = " << curSDigit->GetId()  << endl ;
	    for(Int_t check= 0; check < nSdigits; check++) {
	      sdigit = (AliEMCALDigit *)sdigits->At(check);
	      if( sdigit->GetId() == curSDigit->GetId())   
		{ 
		  *sdigit = *sdigit + *curSDigit ;
		  newsdigit = kFALSE ;
		}
	    }
	    if (newsdigit) 
	      { new((*sdigits)[nSdigits])  AliEMCALDigit(*curSDigit);
	      nSdigits++ ;  
	      //cout << "Preshower nsdigits = " << nSdigits << endl ;
	      }
	    newsdigit=kTRUE;	
	  } 
      } 
      //    } // loop over tracks
      sdigits->Sort() ;
      
      nSdigits = sdigits->GetEntriesFast() ;
      sdigits->Expand(nSdigits) ;
      
      //  Int_t i ;
      for (i = 0 ; i < nSdigits ; i++) { 
	AliEMCALDigit * digit = (AliEMCALDigit *) 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/EMCAL.SDigits.root",gAlice->GetBaseFile()) ;
      }
      
      TDirectory *cwd = gDirectory;
      
      //First list of sdigits
      Int_t bufferSize = 32000 ;    
      TBranch * sdigitsBranch = gAlice->TreeS()->Branch("EMCAL",&sdigits,bufferSize);
      sdigitsBranch->SetTitle(sdname);
      cout << " AliEMCALSDigitizer::Exec sdname " << sdname << endl ; 
      
      if (file) {
	sdigitsBranch->SetFile(file);
	TIter next( sdigitsBranch->GetListOfBranches());
	TBranch * subbr;
	while ((subbr=(TBranch*)next())) {
	  subbr->SetFile(file);
	}   
	cwd->cd();
      } 
      
      //second - SDigitizer
      Int_t splitlevel = 0 ;
      AliEMCALSDigitizer * sd = this ;
      TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliEMCALSDigitizer","AliEMCALSDigitizer",
							   &sd,bufferSize,splitlevel); 
      sdigitizerBranch->SetTitle(sdname);
      if (file) {
	sdigitizerBranch->SetFile(file);
	TIter next( sdigitizerBranch->GetListOfBranches());
	TBranch * subbr ;
	while ((subbr=(TBranch*)next())) {
	  subbr->SetFile(file);
	}   
	cwd->cd();
	delete file;
      }
      
      sdigitsBranch->Fill() ;
      sdigitizerBranch->Fill() ;
      gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
      
      if(strstr(option,"deb"))
	PrintSDigits(option) ;
      
  }
  
  if(strstr(option,"tim")){
    gBenchmark->Stop("EMCALSDigitizer");
    cout << "AliEMCALSDigitizer:" << endl ;
    cout << "   took " << gBenchmark->GetCpuTime("EMCALSDigitizer") << " seconds for SDigitizing " 
	 <<  gBenchmark->GetCpuTime("EMCALSDigitizer")/fNevents << " seconds per event " << endl ;
    cout << endl ;
  }
  
  
}
//__________________________________________________________________
void AliEMCALSDigitizer::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("EMCAL")) ; 
  TBranch * sdigitizerBranch =  
    static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliEMCALSDigitizer")) ;
  const char * sdigitsTitle    = sdigitsBranch ->GetTitle() ;  
  const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
  if ( stitle.CompareTo(sdigitsTitle)==0 || stitle.CompareTo(sdigitizerTitle)==0 ){
    cerr << "ERROR: AliEMCALSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
    return ;
  }
  
  cout << "AliEMCALSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;

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


}
//__________________________________________________________________
void AliEMCALSDigitizer::Print(Option_t* option)const{
  cout << "------------------- "<< GetName() << " -------------" << endl ;
  cout << "   Writing SDigitis 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 AliEMCALSDigitizer::operator==( AliEMCALSDigitizer const &sd )const{
  if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
    return kTRUE ;
  else
    return kFALSE ;
}
//__________________________________________________________________
void AliEMCALSDigitizer::PrintSDigits(Option_t * option){
  //Prints list of digits produced at the current pass of AliEMCALDigitizer
  
  AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ; 
  TString sdname(GetName()) ;
  sdname.Remove(sdname.Index(GetTitle())-1) ;
  const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ; 
  
  cout << "AliEMCALSDigitiser: 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
    AliEMCALDigit * digit;
    cout << "SDigit Id " << " Amplitude " <<  " Time " << " Index "  <<  " Nprim " << " Primaries list " <<  endl;    
    Int_t index ;
    for (index = 0 ; index < sdigits->GetEntries() ; index++) {
      digit = (AliEMCALDigit * )  sdigits->At(index) ;
      cout << setw(6)  <<  digit->GetId() << "   "  << 	setw(10)  <<  digit->GetAmp() <<   "    "  << digit->GetTime()
	   << setw(6)  <<  digit->GetIndexInList() << "    "   
	   << setw(5)  <<  digit->GetNprimary() <<"    ";
      
      Int_t iprimary;
      for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
	cout << " "  <<  digit->GetPrimary(iprimary+1) << "  ";
      cout << endl;  	 
    }
    cout <<endl;
  }
}
//________________________________________________________________________
Int_t AliEMCALSDigitizer::Layer2TowerID(Int_t s, Bool_t preshower)
{
  AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
  const AliEMCALGeometry * geom = gime->EMCALGeometry();
  Int_t a  = (s/geom->GetNPhi())%geom->GetNZ()+1; // Phi Tower Index
  Int_t b = (s-1)%(geom->GetNPhi())+1; //Eta Tower Index
  Int_t t = -10;

if (a > 0 && b > 0)
{
  t = a*b + preshower*geom->GetNPhi()*geom->GetNZ();
  return t;
}
else
{cerr << " AliEMCALSDigitizer::Layer2TowerID() -- there is an error "<< endl << "Phi number = "
      << b << "Eta number = " << a << endl ;
return t;}
}
Commit	Line	Data
ffa6d63b	1	/*************************************************************************
61e0abb5	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	//_________________________________________________________________________
	19	// This is a TTask that makes SDigits out of Hits
	20	// A Summable Digits is the sum of all hits originating
ffa6d63b	21	// from one in one tower of the EMCAL
61e0abb5	22	// A threshold for assignment of the primary to SDigit is applied
	23	// SDigits are written to TreeS, branch "EMCAL"
	24	// AliEMCALSDigitizer with all current parameters is written
	25	// to TreeS branch "AliEMCALSDigitizer".
	26	// Both branches have the same title. If necessary one can produce
	27	// another set of SDigits with different parameters. Two versions
	28	// can be distunguished using titles of the branches.
	29	// User case:
	30	// root [0] AliEMCALSDigitizer * s = new AliEMCALSDigitizer("galice.root")
	31	// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
	32	// root [1] s->ExecuteTask()
	33	// // Makes SDigitis for all events stored in galice.root
	34	// root [2] s->SetPedestalParameter(0.001)
	35	// // One can change parameters of digitization
	36	// root [3] s->SetSDigitsBranch("Redestal 0.001")
	37	// // and write them into the new branch
	38	// root [4] s->ExeciteTask("deb all tim")
	39	// // available parameters:
	40	// deb - print # of produced SDigitis
	41	// deb all - print # and list of produced SDigits
	42	// tim - print benchmarking information
	43	//
ffa6d63b	44	//*-- Author : Sahal Yacoob (LBL)
ffa6d63b	45	// based on : AliPHOSSDigitzer
61e0abb5	46	//////////////////////////////////////////////////////////////////////////////
	47
	48
	49	// --- ROOT system ---
	50	#include "TFile.h"
	51	#include "TTask.h"
	52	#include "TTree.h"
	53	#include "TSystem.h"
	54	#include "TROOT.h"
	55	#include "TFolder.h"
	56	#include "TBenchmark.h"
	57	// --- Standard library ---
	58	#include <iomanip.h>
	59
	60	// --- AliRoot header files ---
	61	#include "AliRun.h"
	62	#include "AliEMCALDigit.h"
	63	#include "AliEMCALHit.h"
	64	#include "AliEMCALSDigitizer.h"
	65	#include "AliEMCALGeometry.h"
	66	#include "AliEMCALv1.h"
814ad4bf	67	#include "AliEMCALGetter.h"
61e0abb5	68
	69	ClassImp(AliEMCALSDigitizer)
	70
	71
	72	//____________________________________________________________________________
	73	AliEMCALSDigitizer::AliEMCALSDigitizer():TTask("AliEMCALSDigitizer","")
	74	{
	75	// ctor
	76	fA = 0;
	77	fB = 10000000. ;
ffa6d63b	78	fPrimThreshold = 0.01 ;
61e0abb5	79	fNevents = 0 ;
	80	fSDigits = 0 ;
	81	fHits = 0 ;
	82	fIsInitialized = kFALSE ;
	83
	84	}
	85
	86	//____________________________________________________________________________
814ad4bf	87	AliEMCALSDigitizer::AliEMCALSDigitizer(const char* headerFile, const char *sDigitsTitle):TTask(sDigitsTitle, headerFile)
61e0abb5	88	{
	89	// ctor
	90	fA = 0;
	91	fB = 10000000.;
ffa6d63b	92	fPrimThreshold = 0.01 ;
814ad4bf	93	fNevents = 0 ;
814ad4bf	94	Init();
61e0abb5	95	}
	96
	97	//____________________________________________________________________________
	98	AliEMCALSDigitizer::~AliEMCALSDigitizer()
	99	{
	100	// dtor
	101	if(fSDigits)
	102	delete fSDigits ;
	103	if(fHits)
	104	delete fHits ;
	105	}
	106	//____________________________________________________________________________
	107	void AliEMCALSDigitizer::Init(){
61e0abb5	108
814ad4bf	109	// Initialization: open root-file, allocate arrays for hits and sdigits,
	110	// attach task SDigitizer to the list of PHOS tasks
	111	//
	112	// Initialization can not be done in the default constructor
	113	//============================================================= YS
	114	// The initialisation is now done by the getter
61e0abb5	115
814ad4bf	116	if( strcmp(GetTitle(), "") == 0 )
	117	SetTitle("galice.root") ;
	118
	119	AliEMCALGetter * gime = AliEMCALGetter::GetInstance(GetTitle(), GetName(), "update") ;
	120	if ( gime == 0 ) {
	121	cerr << "ERROR: AliEMCALSDigitizer::Init -> Could not obtain the Getter object !" << endl ;
	122	return ;
	123	}
	124
	125	gime->PostSDigits( GetName(), GetTitle() ) ;
61e0abb5	126
814ad4bf	127	TString sdname(GetName() );
	128	sdname.Append(":") ;
	129	sdname.Append(GetTitle() ) ;
	130	SetName(sdname) ;
	131	gime->PostSDigitizer(this) ;
	132
	133	// create a folder on the white board //YSAlice/WhiteBoard/SDigits/EMCAL/headerFile/sdigitsTitle
	134
	135	}
61e0abb5	136	//____________________________________________________________________________
61e0abb5	137	void AliEMCALSDigitizer::Exec(Option_t *option) {
61e0abb5	138
814ad4bf	139	// Collects all hits in the same active volume into digit
	140
	141	if( strcmp(GetName(), "") == 0 )
	142	Init() ;
61e0abb5	143
814ad4bf	144	if (strstr(option, "print") ) {
	145	Print("") ;
	146	return ;
	147	}
61e0abb5	148
814ad4bf	149	if(strstr(option,"tim"))
	150	gBenchmark->Start("EMCALSDigitizer");
	151	//Check, if this branch already exits
	152	gAlice->GetEvent(0) ;
	153	if(gAlice->TreeS() ) {
	154	TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
	155	TIter next(lob) ;
	156	TBranch * branch = 0 ;
	157	Bool_t emcalfound = kFALSE, sdigitizerfound = kFALSE ;
61e0abb5	158
814ad4bf	159	while ( (branch = (static_cast<TBranch*>(next()))) && (!emcalfound \|\| !sdigitizerfound) ) {
	160	if ( (strcmp(branch->GetName(), "EMCAL")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
	161	emcalfound = kTRUE ;
	162
	163	else if ( (strcmp(branch->GetName(), "AliEMCALSDigitizer")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
	164	sdigitizerfound = kTRUE ;
61e0abb5	165	}
61e0abb5	166
814ad4bf	167	if ( emcalfound \|\| sdigitizerfound ) {
	168	cerr << "WARNING: AliEMCALSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName()
	169	<< " already exits" << endl ;
	170	return ;
	171	}
	172	}
	173	TString sdname(GetName()) ;
	174	sdname.Remove(sdname.Index(GetTitle())-1) ;
	175	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
	176	const AliEMCALGeometry *geom = gime->EMCALGeometry();
	177	Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
	178
	179	Int_t ievent ;
	180	for(ievent = 0; ievent < nevents; ievent++){
	181	gime->Event(ievent,"H") ;
	182	const TClonesArray * fHits = gime->Hits() ;
	183	TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
	184	sdigits->Clear();
61e0abb5	185	Int_t nSdigits = 0 ;
814ad4bf	186
	187	//Collects all hits in the same active volume into digit
	188
	189
61e0abb5	190
	191
	192	//Now made SDigits from hits, for EMCAL it is the same, so just copy
814ad4bf	193	// Int_t itrack ;
	194	// for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
	195	//gime->Track(itrack);
61e0abb5	196	//=========== Get the EMCAL branch from Hits Tree for the Primary track itrack
814ad4bf	197
	198
	199
61e0abb5	200
	201	Int_t i;
	202	for ( i = 0 ; i < fHits->GetEntries() ; i++ ) {
	203	AliEMCALHit * hit = (AliEMCALHit*)fHits->At(i) ;
ffa6d63b	204	AliEMCALDigit * curSDigit = 0 ;
	205	AliEMCALDigit * sdigit ;
	206	Bool_t newsdigit = kTRUE;
814ad4bf	207	// Assign primary number only if contribution is significant
61e0abb5	208	if( hit->GetEnergy() > fPrimThreshold)
814ad4bf	209	curSDigit = new AliEMCALDigit( hit->GetPrimary(),
	210	hit->GetIparent(),Layer2TowerID(hit->GetId(),kFALSE),
	211	Digitize( hit->GetEnergy() ) ,
	212	hit->GetTime()) ;
61e0abb5	213	else
814ad4bf	214	curSDigit = new AliEMCALDigit( -1 ,
	215	-1 ,
	216	Layer2TowerID(hit->GetId(),kFALSE),
	217	Digitize( hit->GetEnergy() ) ,
	218	hit->GetTime() ) ;
	219	//cout << "Hit ID = " <<hit->GetId() << endl ;
	220	//cout << "ID for detector = " << curSDigit->GetId() << endl ;
	221	// cout << hit->GetEnergy() << " - hit energy - Digit Energy - " << curSDigit->GetAmp() << endl;
	222	for(Int_t check= 0; check < nSdigits ; check++) {
	223	sdigit = (AliEMCALDigit *)sdigits->At(check);
ffa6d63b	224	if( sdigit->GetId() == curSDigit->GetId())
d75bea67	225	{// cout << "SDigit - Get Amp " << sdigit->GetAmp() << endl ;
814ad4bf	226	sdigit = sdigit + *curSDigit ;
ffa6d63b	227	newsdigit = kFALSE;
814ad4bf	228	// cout << " and after addition " << sdigit->GetAmp() << endl ;
	229	}
	230	}
	231	if (newsdigit)
	232	{ new((sdigits)[nSdigits]) AliEMCALDigit(curSDigit);
ffa6d63b	233	nSdigits++ ;
814ad4bf	234	//cout << "Detector nsdigits = " << nSdigits << endl ;
814ad4bf	235	}
ffa6d63b	236	newsdigit = kTRUE;
814ad4bf	237
814ad4bf	238
61e0abb5	239	if( hit->GetEnergy() > fPrimThreshold)
814ad4bf	240	curSDigit = new AliEMCALDigit( hit->GetPrimary(),
	241	hit->GetIparent(),
	242	Layer2TowerID(hit->GetId(),kTRUE) ,
	243	Digitize( hit->GetEnergy() ),
	244	hit->GetTime( ) ) ;
61e0abb5	245	else
814ad4bf	246	curSDigit = new AliEMCALDigit( -1 ,
	247	-1 ,
	248	Layer2TowerID(hit->GetId(),kTRUE),
	249	Digitize( hit->GetEnergy() ),
	250	hit->GetTime() ) ;
	251
	252	if((hit->GetId()/geom->GetNPhi()) < (2*geom->GetNZ()))
	253	{ //cout << "ID for Preshower = " << curSDigit->GetId() << endl ;
	254	for(Int_t check= 0; check < nSdigits; check++) {
	255	sdigit = (AliEMCALDigit *)sdigits->At(check);
	256	if( sdigit->GetId() == curSDigit->GetId())
	257	{
	258	sdigit = sdigit + *curSDigit ;
	259	newsdigit = kFALSE ;
	260	}
	261	}
	262	if (newsdigit)
	263	{ new((sdigits)[nSdigits]) AliEMCALDigit(curSDigit);
	264	nSdigits++ ;
	265	//cout << "Preshower nsdigits = " << nSdigits << endl ;
	266	}
	267	newsdigit=kTRUE;
	268	}
61e0abb5	269	}
814ad4bf	270	// } // loop over tracks
814ad4bf	271	sdigits->Sort() ;
61e0abb5	272
814ad4bf	273	nSdigits = sdigits->GetEntriesFast() ;
	274	sdigits->Expand(nSdigits) ;
	275
	276	// Int_t i ;
	277	for (i = 0 ; i < nSdigits ; i++) {
	278	AliEMCALDigit * digit = (AliEMCALDigit *) sdigits->At(i) ;
	279	digit->SetIndexInList(i) ;
61e0abb5	280	}
814ad4bf	281
	282	if(gAlice->TreeS() == 0)
	283	gAlice->MakeTree("S") ;
	284
	285
	286
	287
	288	//Make (if necessary) branches
	289	char * file =0;
	290	if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
	291	file = new char[strlen(gAlice->GetBaseFile())+20] ;
	292	sprintf(file,"%s/EMCAL.SDigits.root",gAlice->GetBaseFile()) ;
61e0abb5	293	}
61e0abb5	294
814ad4bf	295	TDirectory *cwd = gDirectory;
	296
	297	//First list of sdigits
	298	Int_t bufferSize = 32000 ;
	299	TBranch * sdigitsBranch = gAlice->TreeS()->Branch("EMCAL",&sdigits,bufferSize);
	300	sdigitsBranch->SetTitle(sdname);
	301	cout << " AliEMCALSDigitizer::Exec sdname " << sdname << endl ;
	302
	303	if (file) {
	304	sdigitsBranch->SetFile(file);
	305	TIter next( sdigitsBranch->GetListOfBranches());
	306	TBranch * subbr;
	307	while ((subbr=(TBranch*)next())) {
	308	subbr->SetFile(file);
	309	}
	310	cwd->cd();
	311	}
	312
	313	//second - SDigitizer
	314	Int_t splitlevel = 0 ;
	315	AliEMCALSDigitizer * sd = this ;
	316	TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliEMCALSDigitizer","AliEMCALSDigitizer",
	317	&sd,bufferSize,splitlevel);
	318	sdigitizerBranch->SetTitle(sdname);
	319	if (file) {
	320	sdigitizerBranch->SetFile(file);
	321	TIter next( sdigitizerBranch->GetListOfBranches());
	322	TBranch * subbr ;
	323	while ((subbr=(TBranch*)next())) {
	324	subbr->SetFile(file);
	325	}
	326	cwd->cd();
	327	delete file;
	328	}
	329
	330	sdigitsBranch->Fill() ;
	331	sdigitizerBranch->Fill() ;
	332	gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
	333
	334	if(strstr(option,"deb"))
	335	PrintSDigits(option) ;
	336
61e0abb5	337	}
	338
	339	if(strstr(option,"tim")){
	340	gBenchmark->Stop("EMCALSDigitizer");
	341	cout << "AliEMCALSDigitizer:" << endl ;
	342	cout << " took " << gBenchmark->GetCpuTime("EMCALSDigitizer") << " seconds for SDigitizing "
	343	<< gBenchmark->GetCpuTime("EMCALSDigitizer")/fNevents << " seconds per event " << endl ;
	344	cout << endl ;
	345	}
	346
	347
	348	}
	349	//__________________________________________________________________
	350	void AliEMCALSDigitizer::SetSDigitsBranch(const char * title ){
814ad4bf	351
	352	// Setting title to branch SDigits
	353
	354	TString stitle(title) ;
	355
	356	// check if branch with title already exists
	357	TBranch * sdigitsBranch =
	358	static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("EMCAL")) ;
	359	TBranch * sdigitizerBranch =
	360	static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliEMCALSDigitizer")) ;
	361	const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
	362	const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
	363	if ( stitle.CompareTo(sdigitsTitle)==0 \|\| stitle.CompareTo(sdigitizerTitle)==0 ){
	364	cerr << "ERROR: AliEMCALSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
	365	return ;
	366	}
	367
	368	cout << "AliEMCALSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;
	369
	370	SetName(title) ;
	371
	372	// Post to the WhiteBoard
	373	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
	374	gime->PostSDigits( title, GetTitle()) ;
	375
	376
61e0abb5	377	}
	378	//__________________________________________________________________
	379	void AliEMCALSDigitizer::Print(Option_t* option)const{
	380	cout << "------------------- "<< GetName() << " -------------" << endl ;
814ad4bf	381	cout << " Writing SDigitis to branch with title " << GetName() << endl ;
61e0abb5	382	cout << " with digitization parameters A = " << fA << endl ;
	383	cout << " B = " << fB << endl ;
	384	cout << " Threshold for Primary assignment= " << fPrimThreshold << endl ;
	385	cout << "---------------------------------------------------"<<endl ;
	386
	387	}
	388	//__________________________________________________________________
	389	Bool_t AliEMCALSDigitizer::operator==( AliEMCALSDigitizer const &sd )const{
	390	if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
	391	return kTRUE ;
	392	else
	393	return kFALSE ;
	394	}
	395	//__________________________________________________________________
	396	void AliEMCALSDigitizer::PrintSDigits(Option_t * option){
	397	//Prints list of digits produced at the current pass of AliEMCALDigitizer
	398
814ad4bf	399	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
	400	TString sdname(GetName()) ;
	401	sdname.Remove(sdname.Index(GetTitle())-1) ;
	402	const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
61e0abb5	403
814ad4bf	404	cout << "AliEMCALSDigitiser: event " << gAlice->GetEvNumber() << endl ;
	405	cout << " Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
	406	cout << endl ;
	407	if(strstr(option,"all")\|\|strstr(option,"EMC")){
	408
61e0abb5	409	//loop over digits
61e0abb5	410	AliEMCALDigit * digit;
814ad4bf	411	cout << "SDigit Id " << " Amplitude " << " Time " << " Index " << " Nprim " << " Primaries list " << endl;
61e0abb5	412	Int_t index ;
814ad4bf	413	for (index = 0 ; index < sdigits->GetEntries() ; index++) {
	414	digit = (AliEMCALDigit * ) sdigits->At(index) ;
	415	cout << setw(6) << digit->GetId() << " " << setw(10) << digit->GetAmp() << " " << digit->GetTime()
	416	<< setw(6) << digit->GetIndexInList() << " "
	417	<< setw(5) << digit->GetNprimary() <<" ";
61e0abb5	418
	419	Int_t iprimary;
	420	for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
814ad4bf	421	cout << " " << digit->GetPrimary(iprimary+1) << " ";
61e0abb5	422	cout << endl;
61e0abb5	423	}
814ad4bf	424	cout <<endl;
61e0abb5	425	}
61e0abb5	426	}
814ad4bf	427	//________________________________________________________________________
	428	Int_t AliEMCALSDigitizer::Layer2TowerID(Int_t s, Bool_t preshower)
	429	{
	430	AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
	431	const AliEMCALGeometry * geom = gime->EMCALGeometry();
	432	Int_t a = (s/geom->GetNPhi())%geom->GetNZ()+1; // Phi Tower Index
	433	Int_t b = (s-1)%(geom->GetNPhi())+1; //Eta Tower Index
	434	Int_t t = -10;
	435
	436	if (a > 0 && b > 0)
	437	{
	438	t = ab + preshowergeom->GetNPhi()*geom->GetNZ();
	439	return t;
	440	}
	441	else
	442	{cerr << " AliEMCALSDigitizer::Layer2TowerID() -- there is an error "<< endl << "Phi number = "
	443	<< b << "Eta number = " << a << endl ;
	444	return t;}
	445	}