[u/mrichter/AliRoot.git] / ITS / AliITSClusterFinderV2SPD.cxx

/**************************************************************************
 * Copyright(c) 1998-2003, 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.                  *
 **************************************************************************/
////////////////////////////////////////////////////////////////////////////
//            Implementation of the ITS clusterer V2 class                //
//                                                                        //
//          Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch            //
//          Unfolding switch from AliITSRecoParam: D. Elia, INFN Bari     //
//                                                                        //
////////////////////////////////////////////////////////////////////////////


#include "AliITSClusterFinderV2SPD.h"
#include "AliITSRecPoint.h"
#include "AliITSgeomTGeo.h"
#include "AliITSDetTypeRec.h"
#include "AliITSReconstructor.h"
#include "AliRawReader.h"
#include "AliITSRawStreamSPD.h"
#include <TClonesArray.h>
#include "AliITSdigitSPD.h"

ClassImp(AliITSClusterFinderV2SPD)

AliITSClusterFinderV2SPD::AliITSClusterFinderV2SPD(AliITSDetTypeRec* dettyp):AliITSClusterFinderV2(dettyp),
fLastSPD1(AliITSgeomTGeo::GetModuleIndex(2,1,1)-1),
fNySPD(256),
fNzSPD(160),
fYpitchSPD(0.0050),
fZ1pitchSPD(0.0425),
fZ2pitchSPD(0.0625),
fHwSPD(0.64),
fHlSPD(3.48){

  //Default constructor

  fYSPD[0]=0.5*fYpitchSPD;
  for (Int_t m=1; m<fNySPD; m++) fYSPD[m]=fYSPD[m-1]+fYpitchSPD; 
  fZSPD[0]=fZ1pitchSPD;
  for (Int_t m=1; m<fNzSPD; m++) {
    Double_t dz=fZ1pitchSPD;
    if (m==31 || m==32 || m==63  || m==64  || m==95 || m==96 || 
        m==127 || m==128) dz=fZ2pitchSPD; 
    fZSPD[m]=fZSPD[m-1]+dz;
  }
  for (Int_t m=0; m<fNzSPD; m++) {
    Double_t dz=0.5*fZ1pitchSPD;
    if (m==31 || m==32 || m==63  || m==64  || m==95 || m==96 || 
        m==127 || m==128) dz=0.5*fZ2pitchSPD; 
    fZSPD[m]-=dz;
  }

}
 

void AliITSClusterFinderV2SPD::FindRawClusters(Int_t mod){

  //Find clusters V2
  SetModule(mod);
  FindClustersSPD(fDigits);

}

void AliITSClusterFinderV2SPD::RawdataToClusters(AliRawReader* rawReader, TClonesArray** clusters){
    //------------------------------------------------------------
  // This function creates ITS clusters from raw data
  //------------------------------------------------------------
  rawReader->Reset();
  AliITSRawStreamSPD inputSPD(rawReader);
  FindClustersSPD(&inputSPD, clusters);

}

Int_t AliITSClusterFinderV2SPD::ClustersSPD(AliBin* bins, TClonesArray* digits,TClonesArray* clusters,Int_t maxBins,Int_t nzbins,Int_t iModule,Bool_t rawdata){
  
  //Cluster finder for SPD (from digits and from rawdata)

  const TGeoHMatrix *mT2L=AliITSgeomTGeo::GetTracking2LocalMatrix(iModule);
  
  Int_t nclu=0;
  for(Int_t iBin =0; iBin < maxBins;iBin++){
    if(bins[iBin].IsUsed()) continue;
    Int_t nBins = 0;
    Int_t idxBins[200];
    FindCluster(iBin,nzbins,bins,nBins,idxBins);
    if (nBins == 200){
      Error("ClustersSPD","SPD Too big cluster !\n"); 
      continue;
    }
    Int_t milab[10];
    for(Int_t ilab=0;ilab<10;ilab++){
      milab[ilab]=-2;
    }
    if(rawdata){
      milab[3]=fNdet[iModule];
    }
    Int_t ymin,ymax,zmin,zmax;
    if(rawdata){
      ymin = (idxBins[0] / nzbins) - 1;
      ymax = ymin;
      zmin = (idxBins[0] % nzbins) - 1;
      zmax = zmin;
    }
    else{
      AliITSdigitSPD* dig = (AliITSdigitSPD*)digits->UncheckedAt(idxBins[0]);
      ymin=dig->GetCoord2();
      ymax=ymin;
      zmin=dig->GetCoord1();
      zmax=zmin;
    }
    for (Int_t idx = 0; idx < nBins; idx++) {
      Int_t iy;
      Int_t iz; 
      if(rawdata){
	iy  = (idxBins[idx] / nzbins) - 1;
	iz  = (idxBins[idx] % nzbins) - 1;
      }
      else{
	AliITSdigitSPD* dig = (AliITSdigitSPD*)digits->UncheckedAt(idxBins[idx]);
	iy = dig->GetCoord2();
	iz = dig->GetCoord1();
      }
      if (ymin > iy) ymin = iy;
      if (ymax < iy) ymax = iy;
      if (zmin > iz) zmin = iz;
      if (zmax < iz) zmax = iz;

    }
    if(!rawdata){
      for(Int_t l=0;l<nBins;l++){
	AliITSdigitSPD* dig = (AliITSdigitSPD*)digits->UncheckedAt(idxBins[l]);
	for(Int_t dlab=0;dlab<10;dlab++){
	  Int_t digitlab = (dig->GetTracks())[dlab];
	  if(digitlab<0) continue;
	  AddLabel(milab,digitlab);
	}
	if (milab[9]>0) CheckLabels2(milab);
      }
      CheckLabels2(milab);
    }
    
    Int_t idy =0; //max 2 clusters
    if((iModule <= fLastSPD1) &&idy<3) idy=3;
    if((iModule > fLastSPD1) &&idy<4) idy=4;
    Int_t idz=3;

    // Switch the unfolding OFF/ON
    if(!AliITSReconstructor::GetRecoParam()->GetUseUnfoldingInClusterFinderSPD()) {
      idy=ymax-ymin+1;
      idz=zmax-zmin+1;
    }
 
    for(Int_t iiz=zmin; iiz<=zmax;iiz+=idz){
      for(Int_t iiy=ymin;iiy<=ymax;iiy+=idy){

	Int_t ndigits=0;
	Float_t y=0.,z=0.,q=0.;
	for(Int_t idx=0;idx<nBins;idx++){
	  Int_t iy;
	  Int_t iz; 
	  if(rawdata){
	    iy  = (idxBins[idx] / nzbins)-1;
	    iz  = (idxBins[idx] % nzbins)-1;
	  }
	  else{
	    AliITSdigitSPD* dig = (AliITSdigitSPD*)digits->UncheckedAt(idxBins[idx]);
	    iy = dig->GetCoord2();
	    iz = dig->GetCoord1();
	  }
	  if(zmax-zmin>=idz || ymax-ymin>=idy){
	    if(TMath::Abs(iy-iiy)>0.75*idy) continue;
	    if(TMath::Abs(iz-iiz)>0.75*idz) continue;
	  }
	  ndigits++;
	  Float_t qBin;
	  if(rawdata) qBin = bins[idxBins[idx]].GetQ();
	  if(!rawdata){
	    AliITSdigitSPD* dig = (AliITSdigitSPD*)digits->UncheckedAt(idxBins[idx]);
	    qBin = (Float_t)dig->GetSignal();
	  }
	  y+= qBin * fYSPD[iy];
	  z+= qBin * fZSPD[iz];
	  q+= qBin;	
	}// for idx
	if(ndigits==0) continue;
	y /= q;
	z /= q;
	y -= fHwSPD;
	z -= fHlSPD;

	Float_t hit[5]; //y,z,sigma(y)^2, sigma(z)^2, charge
        {
        Double_t loc[3]={y,0.,z},trk[3]={0.,0.,0.};
        mT2L->MasterToLocal(loc,trk);
        hit[0]=trk[1];
        hit[1]=trk[2];
	}
	hit[2] = fYpitchSPD*fYpitchSPD/12.;
	hit[3] = fZ1pitchSPD*fZ1pitchSPD/12.;
	hit[4] = 1.;

	if(!rawdata) milab[3]=fNdet[iModule];
	Int_t info[3] = {ymax-ymin+1,zmax-zmin+1,fNlayer[iModule]};
	if(!rawdata){
	 AliITSRecPoint cl(milab,hit,info);
	 fDetTypeRec->AddRecPoint(cl);
	}
        else{
	  Int_t label[4]={milab[0],milab[1],milab[2],milab[3]};
	  new (clusters->AddrAt(nclu)) 
		AliITSRecPoint(label, hit,info);
	} 
	nclu++;
      }// for iiy
    }// for iiz
  }//end for iBin
  return nclu;
  
}


void AliITSClusterFinderV2SPD::FindClustersSPD(AliITSRawStream* input, 
					TClonesArray** clusters) 
{
  //------------------------------------------------------------
  // Actual SPD cluster finder for raw data
  //------------------------------------------------------------
  Int_t nClustersSPD = 0;
  Int_t kNzBins = fNzSPD + 2;
  Int_t kNyBins = fNySPD + 2;
  Int_t kMaxBin = kNzBins * kNyBins;
  AliBin *binsSPD = new AliBin[kMaxBin];
  AliBin *binsSPDInit = new AliBin[kMaxBin];  
  AliBin* bins = NULL;

  // read raw data input stream
  while (kTRUE) {
    Bool_t next = input->Next();
    if (!next || input->IsNewModule()) {
      Int_t iModule = input->GetPrevModuleID();

      // when all data from a module was read, search for clusters
      if (bins) { 
	clusters[iModule] = new TClonesArray("AliITSRecPoint");
	Int_t nClusters = ClustersSPD(bins,0,clusters[iModule],kMaxBin,kNzBins,iModule,kTRUE);
	nClustersSPD += nClusters;
	bins = NULL;
      }

      if (!next) break;
      bins = binsSPD;
      memcpy(binsSPD,binsSPDInit,sizeof(AliBin)*kMaxBin);
    }

    // fill the current digit into the bins array
    Int_t index = (input->GetCoord2()+1) * kNzBins + (input->GetCoord1()+1);
    bins[index].SetIndex(index);
    bins[index].SetMask(1);
    bins[index].SetQ(1);
  }

  delete [] binsSPDInit;
  delete [] binsSPD;
  
  Info("FindClustersSPD", "found clusters in ITS SPD: %d", nClustersSPD);
}


void AliITSClusterFinderV2SPD::FindClustersSPD(TClonesArray *digits) {
  //------------------------------------------------------------
  // Actual SPD cluster finder
  //------------------------------------------------------------


  Int_t kNzBins = fNzSPD + 2;
  const Int_t kMAXBIN=kNzBins*(fNySPD+2);

  Int_t ndigits=digits->GetEntriesFast();
  AliBin *bins=new AliBin[kMAXBIN];

  Int_t k;
  AliITSdigitSPD *d=0;
  for (k=0; k<ndigits; k++) {
     d=(AliITSdigitSPD*)digits->UncheckedAt(k);
     Int_t i=d->GetCoord2()+1;   //y
     Int_t j=d->GetCoord1()+1;
     Int_t index=i*kNzBins+j;
     bins[index].SetIndex(k);
     bins[index].SetMask(1);
  }
   
  Int_t nClustersSPD = ClustersSPD(bins,digits,0,kMAXBIN,kNzBins,fModule,kFALSE); 
  delete [] bins;

  Info("FindClustersSPD", "found clusters in ITS SPD: %d", nClustersSPD);
}
Commit	Line	Data
04366a57	1	/**************************************************************************
	2	* Copyright(c) 1998-2003, 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	// Implementation of the ITS clusterer V2 class //
	17	// //
	18	// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch //
d6d232ba	19	// Unfolding switch from AliITSRecoParam: D. Elia, INFN Bari //
04366a57	20	// //
d6d232ba	21	////////////////////////////////////////////////////////////////////////////
04366a57	22
04366a57	23
04366a57	24	#include "AliITSClusterFinderV2SPD.h"
00a7cc50	25	#include "AliITSRecPoint.h"
1f3e997f	26	#include "AliITSgeomTGeo.h"
7d62fb64	27	#include "AliITSDetTypeRec.h"
d6d232ba	28	#include "AliITSReconstructor.h"
04366a57	29	#include "AliRawReader.h"
04366a57	30	#include "AliITSRawStreamSPD.h"
04366a57	31	#include <TClonesArray.h>
04366a57	32	#include "AliITSdigitSPD.h"
	33
	34	ClassImp(AliITSClusterFinderV2SPD)
	35
e56160b8	36	AliITSClusterFinderV2SPD::AliITSClusterFinderV2SPD(AliITSDetTypeRec* dettyp):AliITSClusterFinderV2(dettyp),
1f3e997f	37	fLastSPD1(AliITSgeomTGeo::GetModuleIndex(2,1,1)-1),
e56160b8	38	fNySPD(256),
	39	fNzSPD(160),
	40	fYpitchSPD(0.0050),
	41	fZ1pitchSPD(0.0425),
	42	fZ2pitchSPD(0.0625),
	43	fHwSPD(0.64),
	44	fHlSPD(3.48){
04366a57	45
04366a57	46	//Default constructor
04366a57	47
04366a57	48	fYSPD[0]=0.5*fYpitchSPD;
	49	for (Int_t m=1; m<fNySPD; m++) fYSPD[m]=fYSPD[m-1]+fYpitchSPD;
	50	fZSPD[0]=fZ1pitchSPD;
	51	for (Int_t m=1; m<fNzSPD; m++) {
	52	Double_t dz=fZ1pitchSPD;
	53	if (m==31 \|\| m==32 \|\| m==63 \|\| m==64 \|\| m==95 \|\| m==96 \|\|
	54	m==127 \|\| m==128) dz=fZ2pitchSPD;
	55	fZSPD[m]=fZSPD[m-1]+dz;
	56	}
	57	for (Int_t m=0; m<fNzSPD; m++) {
	58	Double_t dz=0.5*fZ1pitchSPD;
	59	if (m==31 \|\| m==32 \|\| m==63 \|\| m==64 \|\| m==95 \|\| m==96 \|\|
	60	m==127 \|\| m==128) dz=0.5*fZ2pitchSPD;
	61	fZSPD[m]-=dz;
	62	}
	63
	64	}
	65
	66
	67	void AliITSClusterFinderV2SPD::FindRawClusters(Int_t mod){
	68
	69	//Find clusters V2
	70	SetModule(mod);
	71	FindClustersSPD(fDigits);
	72
	73	}
	74
	75	void AliITSClusterFinderV2SPD::RawdataToClusters(AliRawReader* rawReader, TClonesArray** clusters){
	76	//------------------------------------------------------------
	77	// This function creates ITS clusters from raw data
	78	//------------------------------------------------------------
	79	rawReader->Reset();
	80	AliITSRawStreamSPD inputSPD(rawReader);
	81	FindClustersSPD(&inputSPD, clusters);
	82
	83	}
	84
	85	Int_t AliITSClusterFinderV2SPD::ClustersSPD(AliBin* bins, TClonesArray* digits,TClonesArray* clusters,Int_t maxBins,Int_t nzbins,Int_t iModule,Bool_t rawdata){
	86
	87	//Cluster finder for SPD (from digits and from rawdata)
	88
b4704be3	89	const TGeoHMatrix *mT2L=AliITSgeomTGeo::GetTracking2LocalMatrix(iModule);
b4704be3	90
04366a57	91	Int_t nclu=0;
	92	for(Int_t iBin =0; iBin < maxBins;iBin++){
	93	if(bins[iBin].IsUsed()) continue;
	94	Int_t nBins = 0;
	95	Int_t idxBins[200];
	96	FindCluster(iBin,nzbins,bins,nBins,idxBins);
	97	if (nBins == 200){
	98	Error("ClustersSPD","SPD Too big cluster !\n");
	99	continue;
	100	}
	101	Int_t milab[10];
	102	for(Int_t ilab=0;ilab<10;ilab++){
	103	milab[ilab]=-2;
	104	}
	105	if(rawdata){
	106	milab[3]=fNdet[iModule];
	107	}
	108	Int_t ymin,ymax,zmin,zmax;
	109	if(rawdata){
	110	ymin = (idxBins[0] / nzbins) - 1;
	111	ymax = ymin;
	112	zmin = (idxBins[0] % nzbins) - 1;
	113	zmax = zmin;
	114	}
	115	else{
	116	AliITSdigitSPD* dig = (AliITSdigitSPD*)digits->UncheckedAt(idxBins[0]);
	117	ymin=dig->GetCoord2();
	118	ymax=ymin;
	119	zmin=dig->GetCoord1();
	120	zmax=zmin;
	121	}
	122	for (Int_t idx = 0; idx < nBins; idx++) {
	123	Int_t iy;
	124	Int_t iz;
	125	if(rawdata){
	126	iy = (idxBins[idx] / nzbins) - 1;
	127	iz = (idxBins[idx] % nzbins) - 1;
	128	}
	129	else{
	130	AliITSdigitSPD* dig = (AliITSdigitSPD*)digits->UncheckedAt(idxBins[idx]);
	131	iy = dig->GetCoord2();
	132	iz = dig->GetCoord1();
	133	}
	134	if (ymin > iy) ymin = iy;
	135	if (ymax < iy) ymax = iy;
	136	if (zmin > iz) zmin = iz;
	137	if (zmax < iz) zmax = iz;
	138
	139	}
	140	if(!rawdata){
	141	for(Int_t l=0;l<nBins;l++){
	142	AliITSdigitSPD* dig = (AliITSdigitSPD*)digits->UncheckedAt(idxBins[l]);
	143	for(Int_t dlab=0;dlab<10;dlab++){
	144	Int_t digitlab = (dig->GetTracks())[dlab];
	145	if(digitlab<0) continue;
	146	AddLabel(milab,digitlab);
	147	}
	148	if (milab[9]>0) CheckLabels2(milab);
	149	}
	150	CheckLabels2(milab);
	151	}
	152
	153	Int_t idy =0; //max 2 clusters
	154	if((iModule <= fLastSPD1) &&idy<3) idy=3;
155	if((iModule > fLastSPD1) &&idy<4) idy=4;
156	Int_t idz=3;
d6d232ba	157
	158	// Switch the unfolding OFF/ON
	159	if(!AliITSReconstructor::GetRecoParam()->GetUseUnfoldingInClusterFinderSPD()) {
	160	idy=ymax-ymin+1;
	161	idz=zmax-zmin+1;
	162	}
	163
04366a57	164	for(Int_t iiz=zmin; iiz<=zmax;iiz+=idz){
	165	for(Int_t iiy=ymin;iiy<=ymax;iiy+=idy){
	166
	167	Int_t ndigits=0;
	168	Float_t y=0.,z=0.,q=0.;
	169	for(Int_t idx=0;idx<nBins;idx++){
	170	Int_t iy;
	171	Int_t iz;
	172	if(rawdata){
	173	iy = (idxBins[idx] / nzbins)-1;
	174	iz = (idxBins[idx] % nzbins)-1;
	175	}
	176	else{
	177	AliITSdigitSPD* dig = (AliITSdigitSPD*)digits->UncheckedAt(idxBins[idx]);
	178	iy = dig->GetCoord2();
	179	iz = dig->GetCoord1();
	180	}
	181	if(zmax-zmin>=idz \|\| ymax-ymin>=idy){
	182	if(TMath::Abs(iy-iiy)>0.75*idy) continue;
	183	if(TMath::Abs(iz-iiz)>0.75*idz) continue;
	184	}
	185	ndigits++;
	186	Float_t qBin;
	187	if(rawdata) qBin = bins[idxBins[idx]].GetQ();
	188	if(!rawdata){
	189	AliITSdigitSPD* dig = (AliITSdigitSPD*)digits->UncheckedAt(idxBins[idx]);
	190	qBin = (Float_t)dig->GetSignal();
	191	}
	192	y+= qBin * fYSPD[iy];
	193	z+= qBin * fZSPD[iz];
	194	q+= qBin;
	195	}// for idx
	196	if(ndigits==0) continue;
	197	y /= q;
	198	z /= q;
	199	y -= fHwSPD;
	200	z -= fHlSPD;
1f3e997f	201
b4704be3	202	Float_t hit[5]; //y,z,sigma(y)^2, sigma(z)^2, charge
	203	{
	204	Double_t loc[3]={y,0.,z},trk[3]={0.,0.,0.};
	205	mT2L->MasterToLocal(loc,trk);
	206	hit[0]=trk[1];
	207	hit[1]=trk[2];
	208	}
04366a57	209	hit[2] = fYpitchSPD*fYpitchSPD/12.;
04366a57	210	hit[3] = fZ1pitchSPD*fZ1pitchSPD/12.;
00a7cc50	211	hit[4] = 1.;
b4704be3	212
04366a57	213	if(!rawdata) milab[3]=fNdet[iModule];
	214	Int_t info[3] = {ymax-ymin+1,zmax-zmin+1,fNlayer[iModule]};
	215	if(!rawdata){
75fb37cc	216	AliITSRecPoint cl(milab,hit,info);
00a7cc50	217	fDetTypeRec->AddRecPoint(cl);
04366a57	218	}
	219	else{
	220	Int_t label[4]={milab[0],milab[1],milab[2],milab[3]};
	221	new (clusters->AddrAt(nclu))
75fb37cc	222	AliITSRecPoint(label, hit,info);
04366a57	223	}
	224	nclu++;
	225	}// for iiy
	226	}// for iiz
	227	}//end for iBin
	228	return nclu;
	229
	230	}
	231
	232
	233
	234
	235	void AliITSClusterFinderV2SPD::FindClustersSPD(AliITSRawStream* input,
	236	TClonesArray** clusters)
	237	{
	238	//------------------------------------------------------------
	239	// Actual SPD cluster finder for raw data
	240	//------------------------------------------------------------
	241	Int_t nClustersSPD = 0;
	242	Int_t kNzBins = fNzSPD + 2;
	243	Int_t kNyBins = fNySPD + 2;
	244	Int_t kMaxBin = kNzBins * kNyBins;
d7d9347b	245	AliBin *binsSPD = new AliBin[kMaxBin];
d7d9347b	246	AliBin *binsSPDInit = new AliBin[kMaxBin];
04366a57	247	AliBin* bins = NULL;
	248
	249	// read raw data input stream
	250	while (kTRUE) {
	251	Bool_t next = input->Next();
	252	if (!next \|\| input->IsNewModule()) {
	253	Int_t iModule = input->GetPrevModuleID();
	254
	255	// when all data from a module was read, search for clusters
	256	if (bins) {
00a7cc50	257	clusters[iModule] = new TClonesArray("AliITSRecPoint");
04366a57	258	Int_t nClusters = ClustersSPD(bins,0,clusters[iModule],kMaxBin,kNzBins,iModule,kTRUE);
04366a57	259	nClustersSPD += nClusters;
d7d9347b	260	bins = NULL;
04366a57	261	}
	262
	263	if (!next) break;
d7d9347b	264	bins = binsSPD;
d7d9347b	265	memcpy(binsSPD,binsSPDInit,sizeof(AliBin)*kMaxBin);
04366a57	266	}
	267
	268	// fill the current digit into the bins array
	269	Int_t index = (input->GetCoord2()+1) * kNzBins + (input->GetCoord1()+1);
	270	bins[index].SetIndex(index);
	271	bins[index].SetMask(1);
	272	bins[index].SetQ(1);
	273	}
	274
d7d9347b	275	delete [] binsSPDInit;
	276	delete [] binsSPD;
	277
04366a57	278	Info("FindClustersSPD", "found clusters in ITS SPD: %d", nClustersSPD);
	279	}
	280
	281
	282
	283	void AliITSClusterFinderV2SPD::FindClustersSPD(TClonesArray *digits) {
	284	//------------------------------------------------------------
	285	// Actual SPD cluster finder
	286	//------------------------------------------------------------
	287
	288
	289	Int_t kNzBins = fNzSPD + 2;
	290	const Int_t kMAXBIN=kNzBins*(fNySPD+2);
	291
	292	Int_t ndigits=digits->GetEntriesFast();
	293	AliBin *bins=new AliBin[kMAXBIN];
	294
	295	Int_t k;
	296	AliITSdigitSPD *d=0;
	297	for (k=0; k<ndigits; k++) {
	298	d=(AliITSdigitSPD*)digits->UncheckedAt(k);
	299	Int_t i=d->GetCoord2()+1; //y
	300	Int_t j=d->GetCoord1()+1;
	301	Int_t index=i*kNzBins+j;
	302	bins[index].SetIndex(k);
	303	bins[index].SetMask(1);
	304	}
	305
d6d232ba	306	Int_t nClustersSPD = ClustersSPD(bins,digits,0,kMAXBIN,kNzBins,fModule,kFALSE);
04366a57	307	delete [] bins;
d6d232ba	308
d6d232ba	309	Info("FindClustersSPD", "found clusters in ITS SPD: %d", nClustersSPD);
04366a57	310	}
	311
	312