[u/mrichter/AliRoot.git] / MUON / AliMUONDigitizer.cxx

/**************************************************************************
 * Copyright(c) 1998-2000, 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.                  *
 **************************************************************************/

/*
$Log$
Revision 1.7  2001/11/22 11:15:41  jchudoba
Proper deletion of arrays (thanks to Rene Brun)

Revision 1.6  2001/11/02 12:55:45  jchudoba
cleanup of the code, add const to Get methods

Revision 1.4  2001/10/18 14:44:09  jchudoba
Define constant MAXTRACKS for maximum number of tracks associated with 1 digit

Revision 1.3  2001/10/04 20:01:54  jchudoba
changes for TTask implementation, some other small editing

Revision 1.2  2001/07/28 10:46:04  hristov
AliRunDigitizer.h included; typos corrected

Revision 1.1  2001/07/27 15:41:01  jchudoba
merging/digitization classes

*/
#include <TTree.h> 
#include <TObjArray.h>
#include <TFile.h>
#include <TDirectory.h>
#include <iostream.h>

#include "AliMUONDigitizer.h"
#include "AliMUONConstants.h"
#include "AliMUONChamber.h"
#include "AliMUONHitMapA1.h"
#include "AliMUON.h"
#include "AliMUONHit.h"
#include "AliMUONPadHit.h"
#include "AliMUONDigit.h"
#include "AliMUONTransientDigit.h"
#include "AliRun.h"
#include "AliPDG.h"
#include "AliRunDigitizer.h"

ClassImp(AliMUONDigitizer)

//___________________________________________
AliMUONDigitizer::AliMUONDigitizer() :AliDigitizer()
{
// Default ctor - don't use it
  fHits = 0;
  fPadHits = 0;
  fHitMap = 0;
  fTDList = 0;
}

//___________________________________________
AliMUONDigitizer::AliMUONDigitizer(AliRunDigitizer* manager) 
    :AliDigitizer(manager)
{
// ctor which should be used
  fHitMap  = 0;
  fTDList  = 0;
  fHits    = 0;
  fPadHits = 0;
  fDebug   = 0; 
  if (GetDebug()>2) 
    cerr<<"AliMUONDigitizer::AliMUONDigitizer"
	<<"(AliRunDigitizer* manager) was processed"<<endl;
}

//------------------------------------------------------------------------
AliMUONDigitizer::~AliMUONDigitizer()
{
// Destructor
  if (fHits)       delete fHits;
  if (fPadHits)    delete fPadHits;
}

//------------------------------------------------------------------------
Bool_t AliMUONDigitizer::Exists(const AliMUONPadHit *padhit) const
{
  return (fHitMap[fNch]->TestHit(padhit->PadX(),padhit->PadY()));
}

//------------------------------------------------------------------------
void AliMUONDigitizer::Update(AliMUONPadHit *padhit)
{
    AliMUONTransientDigit *pdigit = 
      static_cast<AliMUONTransientDigit*>(
      fHitMap[fNch]->GetHit(padhit->PadX(),padhit->PadY()));

    // update charge
    //
    Int_t iqpad    = padhit->QPad();        // charge per pad
    pdigit->AddSignal(iqpad);
    pdigit->AddPhysicsSignal(iqpad);		

    // update list of tracks
    //
    Int_t track, charge;    
    track = fTrack+fMask;
    if (fSignal) {
      charge = iqpad;
    } else {
      charge = kBgTag;
    }
    pdigit->UpdateTrackList(track,charge);
}

//------------------------------------------------------------------------
void AliMUONDigitizer::CreateNew(AliMUONPadHit *padhit)
{
// Create new AliMUONTransientDigit and add it to the fTDList

  fTDList->AddAtAndExpand(
    new AliMUONTransientDigit(fNch,fDigits),fCounter);
  fHitMap[fNch]->SetHit(padhit->PadX(),padhit->PadY(),fCounter);
  AliMUONTransientDigit* pdigit = 
    (AliMUONTransientDigit*)fTDList->Last();
  // list of tracks
  Int_t track, charge;    
  track = fTrack+fMask;
  if (fSignal) {
    charge = padhit->QPad();
  } else {
    charge = kBgTag;
  }
  pdigit->AddToTrackList(track,charge);
  fCounter++;
}


//------------------------------------------------------------------------
Bool_t AliMUONDigitizer::Init()
{
// Initialization 
    
  fHits     = new TClonesArray("AliMUONHit",1000);
  fPadHits  = new TClonesArray("AliMUONPadHit",1000);
  return kTRUE;
}


//------------------------------------------------------------------------
//void AliMUONDigitizer::Digitize()
void AliMUONDigitizer::Exec(Option_t* option)
{

  TString optionString = option;
  if (optionString.Data() == "deb") {
    cout<<"AliMUONDigitizer::Exec: called with option deb "<<endl;
    fDebug = 3;
  }
  AliMUONChamber*   iChamber;
  AliSegmentation*  segmentation;
  
  if (GetDebug()>2) cerr<<"   AliMUONDigitizer::Digitize() starts"<<endl;
  fTDList = new TObjArray;

  AliMUON *pMUON  = (AliMUON *) gAlice->GetModule("MUON");
  if (!pMUON) {
    cerr<<"AliMUONDigitizer::Digitize Error:"
	<<" module MUON not found in the input file"<<endl;
    return;
  }
  pMUON->MakeBranchInTreeD(fManager->GetTreeD());
  fHitMap= new AliMUONHitMapA1* [AliMUONConstants::NCh()];

  //
  // loop over cathodes
  //

  for (int icat = 0; icat < 2; icat++) { 
    fCounter = 0;
    for (Int_t i = 0; i < AliMUONConstants::NCh(); i++) {
      iChamber = &(pMUON->Chamber(i));
//      if (!(iChamber->Nsec() == 1 && icat == 1)) {
	segmentation = iChamber->SegmentationModel(icat+1);
	fHitMap[i] = new AliMUONHitMapA1(segmentation, fTDList);
//      }
    }


// Loop over files to digitize
    fSignal = kTRUE;
    for (Int_t inputFile=0; inputFile<fManager->GetNinputs();
	 inputFile++) {
// Connect MUON branches

      if (inputFile > 0 ) fSignal = kFALSE;
      TBranch *branchHits = 0;
      TBranch *branchPadHits = 0;
      TTree *treeH = fManager->GetInputTreeH(inputFile);
      if (GetDebug()>2) {
	cerr<<"   inputFile , cathode = "<<inputFile<<" "
	    <<icat<<endl;
	cerr<<"   treeH, fHits "<<treeH<<" "<<fHits<<endl;
      }
      if (treeH && fHits) {
	branchHits = treeH->GetBranch("MUON");
	if (branchHits) {
	  fHits->Clear();
	  branchHits->SetAddress(&fHits);
	}
	else
	  Error("Exec","branch MUON was not found");
      }
      if (GetDebug()>2) cerr<<"   branchHits = "<<branchHits<<endl;

      if (treeH && fPadHits) {
	branchPadHits = treeH->GetBranch("MUONCluster");
	if (branchPadHits) 
	  branchPadHits->SetAddress(&fPadHits);
	else
	  Error("Exec","branch MUONCluster was not found");
      }
      if (GetDebug()>2) cerr<<"   branchPadHits = "<<branchPadHits<<endl;

//
//   Loop over tracks
//

      Int_t ntracks = (Int_t) treeH->GetEntries();

      for (fTrack = 0; fTrack < ntracks; fTrack++) {
	if (GetDebug()>2) cerr<<"   fTrack = "<<fTrack<<endl;
	fHits->Clear();
	fPadHits->Clear();
	branchHits->GetEntry(fTrack);
	branchPadHits->GetEntry(fTrack);
	
//
//   Loop over hits

	AliMUONHit* mHit;
	for(Int_t i = 0; i < fHits->GetEntriesFast(); ++i) {
	  mHit = static_cast<AliMUONHit*>(fHits->At(i));
	  fNch = mHit->Chamber()-1;  // chamber number
	  if (fNch > AliMUONConstants::NCh()-1) {
	    cerr<<"AliMUONDigitizer: ERROR: "
		<<"fNch > AliMUONConstants::NCh()-1, fNch, NCh(): "
		<<fNch<<", "<< AliMUONConstants::NCh()<<endl;
	    return;
	  }
	  iChamber = &(pMUON->Chamber(fNch));
//
// Loop over pad hits
	  for (AliMUONPadHit* mPad =
		 (AliMUONPadHit*)pMUON->FirstPad(mHit,fPadHits);
	       mPad;
	       mPad = (AliMUONPadHit*)pMUON->NextPad(fPadHits))
	  {
	    Int_t cathode  = mPad->Cathode();      // cathode number
	    Int_t ipx      = mPad->PadX();         // pad number on X
	    Int_t ipy      = mPad->PadY();         // pad number on Y
	    Int_t iqpad    = Int_t(mPad->QPad());  // charge per pad
	    if (cathode != (icat+1)) continue;

	    fMask = fManager->GetMask(inputFile);
	    fDigits[0] = ipx;
	    fDigits[1] = ipy;
	    fDigits[2] = icat;
	    fDigits[3] = iqpad;
	    if (inputFile == 0) {
	      fDigits[4] = iqpad;
	    } else {
	      fDigits[4] = 0;
	    }
	    if (mHit->Particle() == kMuonPlus ||
		mHit->Particle() == kMuonMinus) {
	      fDigits[5] = (mPad->HitNumber()) + fMask; 
	    } else fDigits[5] = -1;

	    // build the list of fired pads and update the info, 
	    // fDigits is input for Update(mPad)

	    if (!Exists(mPad)) {
	      CreateNew(mPad);
	    } else {
	      Update(mPad);
	    } //  end if Exists(mPad)
	  } //end loop over clusters
	} // hit loop
      } // track loop
    } // end file loop
    if (GetDebug()>2) cerr<<"END OF FILE LOOP"<<endl;

    Int_t tracks[kMAXTRACKS];
    Int_t charges[kMAXTRACKS];
    Int_t nentries = fTDList->GetEntriesFast();
	
    for (Int_t nent = 0; nent < nentries; nent++) {
      AliMUONTransientDigit *address = (AliMUONTransientDigit*)fTDList->At(nent);
      if (address == 0) continue; 
      Int_t ich = address->Chamber();
      Int_t   q = address->Signal(); 
      iChamber = &(pMUON->Chamber(ich));
//
//  Digit Response (noise, threshold, saturation, ...)
      AliMUONResponse * response = iChamber->ResponseModel();
      q = response->DigitResponse(q);
	    
      if (!q) continue;
	    
      fDigits[0] = address->PadX();
      fDigits[1] = address->PadY();
      fDigits[2] = address->Cathode();
      fDigits[3] = q;
      fDigits[4] = address->Physics();
      fDigits[5] = address->Hit();
	    
      Int_t nptracks = address->GetNTracks();

      if (nptracks > kMAXTRACKS) {
	if (GetDebug() >0) {
	  cerr<<"AliMUONDigitizer: nptracks > 10 "<<nptracks;
	  cerr<<"reset to max value "<<kMAXTRACKS<<endl;
	}
	nptracks = kMAXTRACKS;
      }
      if (nptracks > 2 && GetDebug() >2) {
	cerr<<"AliMUONDigitizer: nptracks > 2 "<<nptracks<<endl;
	printf("cat,ich,ix,iy,q %d %d %d %d %d \n",icat,ich,fDigits[0],fDigits[1],q);
      }
      for (Int_t tr = 0; tr < nptracks; tr++) {
	tracks[tr]   = address->GetTrack(tr);
	charges[tr]  = address->GetCharge(tr);
      }      //end loop over list of tracks for one pad
      // Sort list of tracks according to charge
      if (nptracks > 1) {
	SortTracks(tracks,charges,nptracks);
      }
      if (nptracks < kMAXTRACKS ) {
	for (Int_t i = nptracks; i < kMAXTRACKS; i++) {
	  tracks[i]  = 0;
	  charges[i] = 0;
	}
      }
	    
      // fill digits
      pMUON->AddDigits(ich,tracks,charges,fDigits);
    }

    fManager->GetTreeD()->Fill();

    pMUON->ResetDigits();  //
    fTDList->Clear();

	
    for(Int_t ii = 0; ii < AliMUONConstants::NCh(); ++ii) {
      if (fHitMap[ii]) {
	delete fHitMap[ii];
	fHitMap[ii] = 0;
      }
    }
  } //end loop over cathodes
  if (GetDebug()>2) 
    cerr<<"AliMUONDigitizer::Exec: writing the TreeD: "
	<<fManager->GetTreeD()->GetName()<<endl;
  fManager->GetTreeD()->Write(0,TObject::kOverwrite);
  delete [] fHitMap;
  delete fTDList;
    
  if (fHits)    fHits->Delete();
  if (fPadHits) fPadHits->Delete();
}


//------------------------------------------------------------------------
void AliMUONDigitizer::SortTracks(Int_t *tracks,Int_t *charges,Int_t ntr)
{
  //
  // Sort the list of tracks contributing to a given digit
  // Only the 3 most significant tracks are acctually sorted
  //
  
  //
  //  Loop over signals, only 3 times
  //
  
  Int_t qmax;
  Int_t jmax;
  Int_t idx[3] = {-2,-2,-2};
  Int_t jch[3] = {-2,-2,-2};
  Int_t jtr[3] = {-2,-2,-2};
  Int_t i,j,imax;
  
  if (ntr<3) imax=ntr;
  else imax=3;
  for(i=0;i<imax;i++){
    qmax=0;
    jmax=0;
    
    for(j=0;j<ntr;j++){
      
      if((i == 1 && j == idx[i-1]) 
	 ||(i == 2 && (j == idx[i-1] || j == idx[i-2]))) continue;
      
      if(charges[j] > qmax) {
	qmax = charges[j];
	jmax=j;
      }       
    } 
    
    if(qmax > 0) {
      idx[i]=jmax;
      jch[i]=charges[jmax]; 
      jtr[i]=tracks[jmax]; 
    }
    
  } 
  
  for(i=0;i<3;i++){
    if (jtr[i] == -2) {
      charges[i]=0;
      tracks[i]=0;
    } else {
      charges[i]=jch[i];
      tracks[i]=jtr[i];
    }
  }
}
Commit	Line	Data
28752ff4	1	/**************************************************************************
	2	* Copyright(c) 1998-2000, 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	$Log$
111ce036	18	Revision 1.7 2001/11/22 11:15:41 jchudoba
	19	Proper deletion of arrays (thanks to Rene Brun)
	20
3ec837bb	21	Revision 1.6 2001/11/02 12:55:45 jchudoba
	22	cleanup of the code, add const to Get methods
	23
8f36c696	24	Revision 1.4 2001/10/18 14:44:09 jchudoba
	25	Define constant MAXTRACKS for maximum number of tracks associated with 1 digit
	26
0e88acc2	27	Revision 1.3 2001/10/04 20:01:54 jchudoba
	28	changes for TTask implementation, some other small editing
	29
b8278504	30	Revision 1.2 2001/07/28 10:46:04 hristov
	31	AliRunDigitizer.h included; typos corrected
	32
53828ce0	33	Revision 1.1 2001/07/27 15:41:01 jchudoba
	34	merging/digitization classes
	35
28752ff4	36	*/
28752ff4	37	#include <TTree.h>
28752ff4	38	#include <TObjArray.h>
	39	#include <TFile.h>
	40	#include <TDirectory.h>
	41	#include <iostream.h>
	42
	43	#include "AliMUONDigitizer.h"
	44	#include "AliMUONConstants.h"
	45	#include "AliMUONChamber.h"
28752ff4	46	#include "AliMUONHitMapA1.h"
	47	#include "AliMUON.h"
	48	#include "AliMUONHit.h"
	49	#include "AliMUONPadHit.h"
	50	#include "AliMUONDigit.h"
	51	#include "AliMUONTransientDigit.h"
	52	#include "AliRun.h"
	53	#include "AliPDG.h"
53828ce0	54	#include "AliRunDigitizer.h"
28752ff4	55
	56	ClassImp(AliMUONDigitizer)
	57
	58	//___________________________________________
	59	AliMUONDigitizer::AliMUONDigitizer() :AliDigitizer()
	60	{
	61	// Default ctor - don't use it
c7955c78	62	fHits = 0;
	63	fPadHits = 0;
	64	fHitMap = 0;
	65	fTDList = 0;
28752ff4	66	}
	67
	68	//___________________________________________
	69	AliMUONDigitizer::AliMUONDigitizer(AliRunDigitizer* manager)
	70	:AliDigitizer(manager)
	71	{
	72	// ctor which should be used
28752ff4	73	fHitMap = 0;
28752ff4	74	fTDList = 0;
28752ff4	75	fHits = 0;
b8278504	76	fPadHits = 0;
b8278504	77	fDebug = 0;
28752ff4	78	if (GetDebug()>2)
	79	cerr<<"AliMUONDigitizer::AliMUONDigitizer"
	80	<<"(AliRunDigitizer* manager) was processed"<<endl;
	81	}
	82
	83	//------------------------------------------------------------------------
	84	AliMUONDigitizer::~AliMUONDigitizer()
	85	{
	86	// Destructor
28752ff4	87	if (fHits) delete fHits;
28752ff4	88	if (fPadHits) delete fPadHits;
28752ff4	89	}
	90
	91	//------------------------------------------------------------------------
c7955c78	92	Bool_t AliMUONDigitizer::Exists(const AliMUONPadHit *padhit) const
28752ff4	93	{
28752ff4	94	return (fHitMap[fNch]->TestHit(padhit->PadX(),padhit->PadY()));
	95	}
	96
	97	//------------------------------------------------------------------------
8f36c696	98	void AliMUONDigitizer::Update(AliMUONPadHit *padhit)
28752ff4	99	{
8f36c696	100	AliMUONTransientDigit *pdigit =
	101	static_cast<AliMUONTransientDigit*>(
	102	fHitMap[fNch]->GetHit(padhit->PadX(),padhit->PadY()));
	103
	104	// update charge
	105	//
	106	Int_t iqpad = padhit->QPad(); // charge per pad
	107	pdigit->AddSignal(iqpad);
	108	pdigit->AddPhysicsSignal(iqpad);
	109
	110	// update list of tracks
	111	//
	112	Int_t track, charge;
	113	track = fTrack+fMask;
	114	if (fSignal) {
	115	charge = iqpad;
28752ff4	116	} else {
8f36c696	117	charge = kBgTag;
28752ff4	118	}
8f36c696	119	pdigit->UpdateTrackList(track,charge);
28752ff4	120	}
	121
	122	//------------------------------------------------------------------------
8f36c696	123	void AliMUONDigitizer::CreateNew(AliMUONPadHit *padhit)
28752ff4	124	{
	125	// Create new AliMUONTransientDigit and add it to the fTDList
	126
28752ff4	127	fTDList->AddAtAndExpand(
28752ff4	128	new AliMUONTransientDigit(fNch,fDigits),fCounter);
8f36c696	129	fHitMap[fNch]->SetHit(padhit->PadX(),padhit->PadY(),fCounter);
8f36c696	130	AliMUONTransientDigit* pdigit =
c7955c78	131	(AliMUONTransientDigit*)fTDList->Last();
28752ff4	132	// list of tracks
8f36c696	133	Int_t track, charge;
	134	track = fTrack+fMask;
	135	if (fSignal) {
	136	charge = padhit->QPad();
	137	} else {
	138	charge = kBgTag;
	139	}
	140	pdigit->AddToTrackList(track,charge);
	141	fCounter++;
28752ff4	142	}
	143
	144
	145	//------------------------------------------------------------------------
	146	Bool_t AliMUONDigitizer::Init()
	147	{
	148	// Initialization
	149
	150	fHits = new TClonesArray("AliMUONHit",1000);
	151	fPadHits = new TClonesArray("AliMUONPadHit",1000);
	152	return kTRUE;
	153	}
	154
	155
	156	//------------------------------------------------------------------------
b8278504	157	//void AliMUONDigitizer::Digitize()
b8278504	158	void AliMUONDigitizer::Exec(Option_t* option)
28752ff4	159	{
28752ff4	160
b8278504	161	TString optionString = option;
	162	if (optionString.Data() == "deb") {
	163	cout<<"AliMUONDigitizer::Exec: called with option deb "<<endl;
	164	fDebug = 3;
	165	}
28752ff4	166	AliMUONChamber* iChamber;
	167	AliSegmentation* segmentation;
	168
	169	if (GetDebug()>2) cerr<<" AliMUONDigitizer::Digitize() starts"<<endl;
	170	fTDList = new TObjArray;
28752ff4	171
	172	AliMUON pMUON = (AliMUON ) gAlice->GetModule("MUON");
	173	if (!pMUON) {
	174	cerr<<"AliMUONDigitizer::Digitize Error:"
	175	<<" module MUON not found in the input file"<<endl;
	176	return;
	177	}
	178	pMUON->MakeBranchInTreeD(fManager->GetTreeD());
8f36c696	179	fHitMap= new AliMUONHitMapA1* [AliMUONConstants::NCh()];
28752ff4	180
	181	//
	182	// loop over cathodes
	183	//
	184
28752ff4	185	for (int icat = 0; icat < 2; icat++) {
28752ff4	186	fCounter = 0;
28752ff4	187	for (Int_t i = 0; i < AliMUONConstants::NCh(); i++) {
	188	iChamber = &(pMUON->Chamber(i));
	189	// if (!(iChamber->Nsec() == 1 && icat == 1)) {
	190	segmentation = iChamber->SegmentationModel(icat+1);
	191	fHitMap[i] = new AliMUONHitMapA1(segmentation, fTDList);
28752ff4	192	// }
	193	}
	194
	195
	196	// Loop over files to digitize
8f36c696	197	fSignal = kTRUE;
28752ff4	198	for (Int_t inputFile=0; inputFile<fManager->GetNinputs();
	199	inputFile++) {
	200	// Connect MUON branches
	201
8f36c696	202	if (inputFile > 0 ) fSignal = kFALSE;
b8278504	203	TBranch *branchHits = 0;
b8278504	204	TBranch *branchPadHits = 0;
28752ff4	205	TTree *treeH = fManager->GetInputTreeH(inputFile);
	206	if (GetDebug()>2) {
	207	cerr<<" inputFile , cathode = "<<inputFile<<" "
	208	<<icat<<endl;
	209	cerr<<" treeH, fHits "<<treeH<<" "<<fHits<<endl;
	210	}
	211	if (treeH && fHits) {
b8278504	212	branchHits = treeH->GetBranch("MUON");
b8278504	213	if (branchHits) {
28752ff4	214	fHits->Clear();
b8278504	215	branchHits->SetAddress(&fHits);
28752ff4	216	}
28752ff4	217	else
c7955c78	218	Error("Exec","branch MUON was not found");
28752ff4	219	}
b8278504	220	if (GetDebug()>2) cerr<<" branchHits = "<<branchHits<<endl;
28752ff4	221
28752ff4	222	if (treeH && fPadHits) {
b8278504	223	branchPadHits = treeH->GetBranch("MUONCluster");
	224	if (branchPadHits)
	225	branchPadHits->SetAddress(&fPadHits);
28752ff4	226	else
c7955c78	227	Error("Exec","branch MUONCluster was not found");
28752ff4	228	}
b8278504	229	if (GetDebug()>2) cerr<<" branchPadHits = "<<branchPadHits<<endl;
28752ff4	230
	231	//
	232	// Loop over tracks
	233	//
	234
	235	Int_t ntracks = (Int_t) treeH->GetEntries();
	236
	237	for (fTrack = 0; fTrack < ntracks; fTrack++) {
	238	if (GetDebug()>2) cerr<<" fTrack = "<<fTrack<<endl;
	239	fHits->Clear();
b8278504	240	fPadHits->Clear();
	241	branchHits->GetEntry(fTrack);
	242	branchPadHits->GetEntry(fTrack);
28752ff4	243
	244	//
	245	// Loop over hits
	246
	247	AliMUONHit* mHit;
c7955c78	248	for(Int_t i = 0; i < fHits->GetEntriesFast(); ++i) {
c7955c78	249	mHit = static_cast<AliMUONHit*>(fHits->At(i));
28752ff4	250	fNch = mHit->Chamber()-1; // chamber number
28752ff4	251	if (fNch > AliMUONConstants::NCh()-1) {
	252	cerr<<"AliMUONDigitizer: ERROR: "
	253	<<"fNch > AliMUONConstants::NCh()-1, fNch, NCh(): "
	254	<<fNch<<", "<< AliMUONConstants::NCh()<<endl;
	255	return;
	256	}
c7955c78	257	iChamber = &(pMUON->Chamber(fNch));
28752ff4	258	//
	259	// Loop over pad hits
	260	for (AliMUONPadHit* mPad =
	261	(AliMUONPadHit*)pMUON->FirstPad(mHit,fPadHits);
	262	mPad;
	263	mPad = (AliMUONPadHit*)pMUON->NextPad(fPadHits))
	264	{
	265	Int_t cathode = mPad->Cathode(); // cathode number
	266	Int_t ipx = mPad->PadX(); // pad number on X
	267	Int_t ipy = mPad->PadY(); // pad number on Y
	268	Int_t iqpad = Int_t(mPad->QPad()); // charge per pad
	269	if (cathode != (icat+1)) continue;
	270
8f36c696	271	fMask = fManager->GetMask(inputFile);
28752ff4	272	fDigits[0] = ipx;
	273	fDigits[1] = ipy;
	274	fDigits[2] = icat;
	275	fDigits[3] = iqpad;
	276	if (inputFile == 0) {
	277	fDigits[4] = iqpad;
	278	} else {
	279	fDigits[4] = 0;
	280	}
	281	if (mHit->Particle() == kMuonPlus \|\|
	282	mHit->Particle() == kMuonMinus) {
8f36c696	283	fDigits[5] = (mPad->HitNumber()) + fMask;
28752ff4	284	} else fDigits[5] = -1;
	285
	286	// build the list of fired pads and update the info,
	287	// fDigits is input for Update(mPad)
	288
	289	if (!Exists(mPad)) {
	290	CreateNew(mPad);
	291	} else {
	292	Update(mPad);
	293	} // end if Exists(mPad)
	294	} //end loop over clusters
	295	} // hit loop
	296	} // track loop
	297	} // end file loop
	298	if (GetDebug()>2) cerr<<"END OF FILE LOOP"<<endl;
	299
8f36c696	300	Int_t tracks[kMAXTRACKS];
8f36c696	301	Int_t charges[kMAXTRACKS];
28752ff4	302	Int_t nentries = fTDList->GetEntriesFast();
	303
	304	for (Int_t nent = 0; nent < nentries; nent++) {
	305	AliMUONTransientDigit address = (AliMUONTransientDigit)fTDList->At(nent);
	306	if (address == 0) continue;
	307	Int_t ich = address->Chamber();
	308	Int_t q = address->Signal();
	309	iChamber = &(pMUON->Chamber(ich));
	310	//
	311	// Digit Response (noise, threshold, saturation, ...)
	312	AliMUONResponse * response = iChamber->ResponseModel();
	313	q = response->DigitResponse(q);
	314
	315	if (!q) continue;
	316
	317	fDigits[0] = address->PadX();
	318	fDigits[1] = address->PadY();
	319	fDigits[2] = address->Cathode();
	320	fDigits[3] = q;
	321	fDigits[4] = address->Physics();
	322	fDigits[5] = address->Hit();
	323
8f36c696	324	Int_t nptracks = address->GetNTracks();
28752ff4	325
8f36c696	326	if (nptracks > kMAXTRACKS) {
0e88acc2	327	if (GetDebug() >0) {
0e88acc2	328	cerr<<"AliMUONDigitizer: nptracks > 10 "<<nptracks;
8f36c696	329	cerr<<"reset to max value "<<kMAXTRACKS<<endl;
0e88acc2	330	}
8f36c696	331	nptracks = kMAXTRACKS;
28752ff4	332	}
28752ff4	333	if (nptracks > 2 && GetDebug() >2) {
0e88acc2	334	cerr<<"AliMUONDigitizer: nptracks > 2 "<<nptracks<<endl;
28752ff4	335	printf("cat,ich,ix,iy,q %d %d %d %d %d \n",icat,ich,fDigits[0],fDigits[1],q);
	336	}
	337	for (Int_t tr = 0; tr < nptracks; tr++) {
8f36c696	338	tracks[tr] = address->GetTrack(tr);
8f36c696	339	charges[tr] = address->GetCharge(tr);
28752ff4	340	} //end loop over list of tracks for one pad
	341	// Sort list of tracks according to charge
	342	if (nptracks > 1) {
	343	SortTracks(tracks,charges,nptracks);
	344	}
8f36c696	345	if (nptracks < kMAXTRACKS ) {
8f36c696	346	for (Int_t i = nptracks; i < kMAXTRACKS; i++) {
28752ff4	347	tracks[i] = 0;
	348	charges[i] = 0;
	349	}
	350	}
	351
	352	// fill digits
	353	pMUON->AddDigits(ich,tracks,charges,fDigits);
28752ff4	354	}
	355
	356	fManager->GetTreeD()->Fill();
	357
	358	pMUON->ResetDigits(); //
	359	fTDList->Clear();
	360
	361
	362	for(Int_t ii = 0; ii < AliMUONConstants::NCh(); ++ii) {
	363	if (fHitMap[ii]) {
	364	delete fHitMap[ii];
	365	fHitMap[ii] = 0;
	366	}
	367	}
28752ff4	368	} //end loop over cathodes
28752ff4	369	if (GetDebug()>2)
b8278504	370	cerr<<"AliMUONDigitizer::Exec: writing the TreeD: "
28752ff4	371	<<fManager->GetTreeD()->GetName()<<endl;
b8278504	372	fManager->GetTreeD()->Write(0,TObject::kOverwrite);
28752ff4	373	delete [] fHitMap;
	374	delete fTDList;
	375
28752ff4	376	if (fHits) fHits->Delete();
28752ff4	377	if (fPadHits) fPadHits->Delete();
28752ff4	378	}
	379
	380
b8278504	381	//------------------------------------------------------------------------
28752ff4	382	void AliMUONDigitizer::SortTracks(Int_t tracks,Int_t charges,Int_t ntr)
	383	{
	384	//
	385	// Sort the list of tracks contributing to a given digit
	386	// Only the 3 most significant tracks are acctually sorted
	387	//
	388
	389	//
	390	// Loop over signals, only 3 times
	391	//
	392
	393	Int_t qmax;
	394	Int_t jmax;
	395	Int_t idx[3] = {-2,-2,-2};
	396	Int_t jch[3] = {-2,-2,-2};
	397	Int_t jtr[3] = {-2,-2,-2};
	398	Int_t i,j,imax;
	399
	400	if (ntr<3) imax=ntr;
	401	else imax=3;
	402	for(i=0;i<imax;i++){
	403	qmax=0;
	404	jmax=0;
	405
	406	for(j=0;j<ntr;j++){
	407
	408	if((i == 1 && j == idx[i-1])
	409	\|\|(i == 2 && (j == idx[i-1] \|\| j == idx[i-2]))) continue;
	410
	411	if(charges[j] > qmax) {
	412	qmax = charges[j];
	413	jmax=j;
	414	}
	415	}
	416
	417	if(qmax > 0) {
	418	idx[i]=jmax;
	419	jch[i]=charges[jmax];
	420	jtr[i]=tracks[jmax];
	421	}
	422
	423	}
	424
	425	for(i=0;i<3;i++){
	426	if (jtr[i] == -2) {
	427	charges[i]=0;
	428	tracks[i]=0;
	429	} else {
	430	charges[i]=jch[i];
	431	tracks[i]=jtr[i];
	432	}
	433	}
	434	}