//____________________________________________________________________________
Int_t AliEMCALClusterizerv1::AreNeighbours(AliEMCALDigit * d1, AliEMCALDigit * d2, Bool_t & shared) const
{
- // Gives the neighbourness of two digits = 0 are not neighbour ; continue searching
- // = 1 are neighbour
- // = 2 is in different SM; continue searching
- // In case it is in different SM, but same phi rack, check if neigbours at eta=0
- // neighbours are defined as digits having at least a common side
- // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
- // which is compared to a digit (d2) not yet in a cluster
-
- static Int_t nSupMod1=0, nModule1=0, nIphi1=0, nIeta1=0, iphi1=0, ieta1=0;
- static Int_t nSupMod2=0, nModule2=0, nIphi2=0, nIeta2=0, iphi2=0, ieta2=0;
-
- shared = kFALSE;
-
- fGeom->GetCellIndex(d1->GetId(), nSupMod1,nModule1,nIphi1,nIeta1);
- fGeom->GetCellIndex(d2->GetId(), nSupMod2,nModule2,nIphi2,nIeta2);
- fGeom->GetCellPhiEtaIndexInSModule(nSupMod1,nModule1,nIphi1,nIeta1, iphi1,ieta1);
- fGeom->GetCellPhiEtaIndexInSModule(nSupMod2,nModule2,nIphi2,nIeta2, iphi2,ieta2);
-
- //If different SM, check if they are in the same phi, then consider cells close to eta=0 as neighbours; May 2010
- if(nSupMod1 != nSupMod2 ) {
- //Check if the 2 SM are in the same PHI position (0,1), (2,3), ...
- Float_t smPhi1 = fGeom->GetEMCGeometry()->GetPhiCenterOfSM(nSupMod1);
- Float_t smPhi2 = fGeom->GetEMCGeometry()->GetPhiCenterOfSM(nSupMod2);
-
- if(!TMath::AreEqualAbs(smPhi1, smPhi2, 1e-3)) return 2; //Not phi rack equal, not neighbours
-
- // In case of a shared cluster, index of SM in C side, columns start at 48 and ends at 48*2
- // C Side impair SM, nSupMod%2=1; A side pair SM nSupMod%2=0
- if(nSupMod1%2) ieta1+=AliEMCALGeoParams::fgkEMCALCols;
- else ieta2+=AliEMCALGeoParams::fgkEMCALCols;
-
- shared = kTRUE; // maybe a shared cluster, we know this later, set it for the moment.
-
- }//Different SM, same phi
-
- Int_t rowdiff = TMath::Abs(iphi1 - iphi2);
- Int_t coldiff = TMath::Abs(ieta1 - ieta2) ;
-
- // neighbours with at least common side; May 11, 2007
- if ((coldiff==0 && TMath::Abs(rowdiff)==1) || (rowdiff==0 && TMath::Abs(coldiff)==1)) {
- //Diagonal?
- //if ((coldiff==0 && TMath::Abs(rowdiff==1)) || (rowdiff==0 && TMath::Abs(coldiff==1)) || (TMath::Abs(rowdiff)==1 && TMath::Abs(coldiff==1))) rv = 1;
-
- if (gDebug == 2)
- printf("AliEMCALClusterizerv1::AreNeighbours(): id1=%d, (row %d, col %d) ; id2=%d, (row %d, col %d), shared %d \n",
- d1->GetId(), iphi1,ieta1, d2->GetId(), iphi2,ieta2, shared);
-
- return 1;
- }//Neighbours
- else {
- shared = kFALSE;
- return 2 ;
- }//Not neighbours
+ // Gives the neighbourness of two digits = 0 are not neighbour ; continue searching
+ // = 1 are neighbour
+ // = 2 is in different SM; continue searching
+ // In case it is in different SM, but same phi rack, check if neigbours at eta=0
+ // neighbours are defined as digits having at least a common side
+ // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
+ // which is compared to a digit (d2) not yet in a cluster
+
+ static Int_t nSupMod1=0, nModule1=0, nIphi1=0, nIeta1=0, iphi1=0, ieta1=0;
+ static Int_t nSupMod2=0, nModule2=0, nIphi2=0, nIeta2=0, iphi2=0, ieta2=0;
+
+ shared = kFALSE;
+
+ fGeom->GetCellIndex(d1->GetId(), nSupMod1,nModule1,nIphi1,nIeta1);
+ fGeom->GetCellIndex(d2->GetId(), nSupMod2,nModule2,nIphi2,nIeta2);
+ fGeom->GetCellPhiEtaIndexInSModule(nSupMod1,nModule1,nIphi1,nIeta1, iphi1,ieta1);
+ fGeom->GetCellPhiEtaIndexInSModule(nSupMod2,nModule2,nIphi2,nIeta2, iphi2,ieta2);
+
+ //If different SM, check if they are in the same phi, then consider cells close to eta=0 as neighbours; May 2010
+ if(nSupMod1 != nSupMod2 ) {
+ //Check if the 2 SM are in the same PHI position (0,1), (2,3), ...
+ Float_t smPhi1 = fGeom->GetEMCGeometry()->GetPhiCenterOfSM(nSupMod1);
+ Float_t smPhi2 = fGeom->GetEMCGeometry()->GetPhiCenterOfSM(nSupMod2);
+
+ if(!TMath::AreEqualAbs(smPhi1, smPhi2, 1e-3)) return 2; //Not phi rack equal, not neighbours
+
+ // In case of a shared cluster, index of SM in C side, columns start at 48 and ends at 48*2
+ // C Side impair SM, nSupMod%2=1; A side pair SM nSupMod%2=0
+ if(nSupMod1%2) ieta1+=AliEMCALGeoParams::fgkEMCALCols;
+ else ieta2+=AliEMCALGeoParams::fgkEMCALCols;
+
+ shared = kTRUE; // maybe a shared cluster, we know this later, set it for the moment.
+
+ }//Different SM, same phi
+
+ Int_t rowdiff = TMath::Abs(iphi1 - iphi2);
+ Int_t coldiff = TMath::Abs(ieta1 - ieta2) ;
+
+ // neighbours with at least common side; May 11, 2007
+ if ((coldiff==0 && TMath::Abs(rowdiff)==1) || (rowdiff==0 && TMath::Abs(coldiff)==1)) {
+ //Diagonal?
+ //if ((coldiff==0 && TMath::Abs(rowdiff==1)) || (rowdiff==0 && TMath::Abs(coldiff==1)) || (TMath::Abs(rowdiff)==1 && TMath::Abs(coldiff==1))) rv = 1;
+
+ if (gDebug == 2)
+ printf("AliEMCALClusterizerv1::AreNeighbours(): id1=%d, (row %d, col %d) ; id2=%d, (row %d, col %d), shared %d \n",
+ d1->GetId(), iphi1,ieta1, d2->GetId(), iphi2,ieta2, shared);
+
+ return 1;
+ }//Neighbours
+ else {
+ shared = kFALSE;
+ return 2 ;
+ }//Not neighbours
}
//____________________________________________________________________________
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff