[u/mrichter/AliRoot.git] / JETAN / AliJetDummyGeo.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.                  *
 **************************************************************************/

//
// Temporarily added to define part of the EMCal geometry
// necessary for the jet finder
//

#include <assert.h>

// --- Root header files ---
#include <TVector3.h>
#include <TGeoManager.h>
#include <TGeoMatrix.h>
#include <TGeoNode.h>

// --- AliRoot header files ---
#include "AliJetDummyGeo.h"

ClassImp(AliJetDummyGeo)

AliJetDummyGeo::AliJetDummyGeo():
    TObject(),
    fArm1PhiMin(80.0), 
    fArm1PhiMax(200.0),
    fArm1EtaMin(-0.7), 
    fArm1EtaMax(+0.7), 
    fNumberOfSuperModules(12), 
    fSteelFrontThick(0.0), 
    fIPDistance(428.0), 
    fZLength(),
    fPhiGapForSM(2.), 
    fNPhi(12),       
    fNZ(24),      
    fPhiModuleSize(12.26 - fPhiGapForSM / Float_t(fNPhi)), 
    fEtaModuleSize(fPhiModuleSize), 
    fNPHIdiv(2), 
    fNETAdiv(2), 
    fNECLayers(77), 
    fECScintThick(0.16), 
    fECPbRadThickness(0.16), 
    fSampling(12.327),
    fTrd1Angle(1.5), 
    fNCellsInModule(fNPHIdiv*fNETAdiv), 
    fNCellsInSupMod(fNCellsInModule*fNPhi*fNZ), 
    fNCells(fNCellsInSupMod*fNumberOfSuperModules-fNCellsInSupMod), 
    fLongModuleSize(fNECLayers*(fECScintThick + fECPbRadThickness)), 
    f2Trd1Dx2(fEtaModuleSize + 2.*fLongModuleSize*TMath::Tan(fTrd1Angle*TMath::DegToRad()/2.)), 
    fShellThickness(TMath::Sqrt(fLongModuleSize*fLongModuleSize + f2Trd1Dx2*f2Trd1Dx2)+fSteelFrontThick),
    fEtaMaxOfTRD1(0.67064) // Value extracted from ShishKebab
{
  // Constructor
  // Local coordinates
  fParSM[0] = GetShellThickness()/2.;        
  fParSM[1] = GetPhiModuleSize() * GetNPhi()/2.;
  fParSM[2] = 350./2.;

  fZLength    = 2.*ZFromEtaR(fIPDistance+fShellThickness,fArm1EtaMax); // Z coverage
  fEnvelop[0] = fIPDistance; // mother volume inner radius
  fEnvelop[1] = fIPDistance + fShellThickness; // mother volume outer r.
  fEnvelop[2] = 1.00001*fZLength; // add some padding for mother volume. 

  // SM phi boundaries - (0,1),(2,3) .. (10,11) - has the same boundaries; Nov 7, 2006 
  fPhiBoundariesOfSM.Set(fNumberOfSuperModules);
  fPhiCentersOfSM.Set(fNumberOfSuperModules/2);
  fPhiBoundariesOfSM[0] = TMath::PiOver2() - TMath::ATan2(fParSM[1] , fIPDistance); // 1th and 2th modules)
  fPhiBoundariesOfSM[1] = TMath::PiOver2() + TMath::ATan2(fParSM[1] , fIPDistance);
  fPhiCentersOfSM[0]    = TMath::PiOver2();
  for(int i=1; i<=4; i++) { // from 2th ro 9th
    fPhiBoundariesOfSM[2*i]   = fPhiBoundariesOfSM[0] + 20.*TMath::DegToRad()*i;
    fPhiBoundariesOfSM[2*i+1] = fPhiBoundariesOfSM[1] + 20.*TMath::DegToRad()*i;
    fPhiCentersOfSM[i]        = fPhiCentersOfSM[0]    + 20.*TMath::DegToRad()*i;
  }
  fPhiBoundariesOfSM[11] = 190.*TMath::DegToRad();
  fPhiBoundariesOfSM[10] = fPhiBoundariesOfSM[11] - TMath::ATan2((fParSM[1]) , fIPDistance);
  fPhiCentersOfSM[5]     = (fPhiBoundariesOfSM[10]+fPhiBoundariesOfSM[11])/2.; 

  //  for(int i=0; i<fNumberOfSuperModules; i++) fMatrixOfSM[i] = 0;

  fCentersOfCellsEtaDir.Set(fNZ*fNETAdiv);
  fCentersOfCellsXDir.Set(fNZ*fNETAdiv);
  fCentersOfCellsPhiDir.Set(fNPhi*fNPHIdiv);
  fEtaCentersOfCells.Set(fNZ*fNETAdiv*fNPhi*fNPHIdiv);
  fPhiCentersOfCells.Set(fNPhi*fNPHIdiv);

  int nphism  = GetNumberOfSuperModules()/2;
  double dphi = (GetArm1PhiMax() - GetArm1PhiMin())/nphism;
  double rpos = (GetEnvelop(0) + GetEnvelop(1))/2.;
  double phi, phiRad, xpos, ypos, zpos;
  for(int i=0; i<nphism; i++){
    phi    = GetArm1PhiMin() + dphi*(2*i+1)/2.; // phi= 90, 110, 130, 150, 170, 190
    phiRad = phi*TMath::Pi()/180.;
    xpos = rpos * TMath::Cos(phiRad);
    ypos = rpos * TMath::Sin(phiRad);
    zpos = fParSM[2];
    if(i==5) {
      xpos += (fParSM[1]/2. * TMath::Sin(phiRad)); 
      ypos -= (fParSM[1]/2. * TMath::Cos(phiRad));
    }
    // pozitive z
    int ind = 2*i;
    TGeoRotation *geoRot0 = new TGeoRotation("geoRot0", 90.0, phi, 90.0, 90.0+phi, 0.0, 0.0);
    fMatrixOfSM[ind] = new TGeoCombiTrans(Form("EmcalSM%2.2i",ind),
					  xpos,ypos, zpos, geoRot0);
    // negaive z
    ind++;
    double phiy = 90. + phi + 180.;
    if(phiy>=360.) phiy -= 360.;
    TGeoRotation *geoRot1 = new TGeoRotation("geoRot1", 90.0, phi, 90.0, phiy, 180.0, 0.0);
    fMatrixOfSM[ind] = new TGeoCombiTrans(Form("EmcalSM%2.2i",ind),
					  xpos,ypos,-zpos, geoRot1);
  } // for

}

AliJetDummyGeo::AliJetDummyGeo(const AliJetDummyGeo& geom):
    TObject(),  
    fArm1PhiMin(geom.fArm1PhiMin),
    fArm1PhiMax(geom.fArm1PhiMax),
    fArm1EtaMin(geom.fArm1EtaMin),
    fArm1EtaMax(geom.fArm1EtaMax),
    fNumberOfSuperModules(geom.fNumberOfSuperModules),
    fSteelFrontThick(geom.fSteelFrontThick),
    fIPDistance(geom.fIPDistance),
    fPhiGapForSM(geom.fPhiGapForSM),
    fNPhi(geom.fNPhi),
    fNZ(geom.fNZ),
    fPhiModuleSize(geom.fPhiModuleSize),
    fEtaModuleSize(geom.fEtaModuleSize),
    fNPHIdiv(geom.fNPHIdiv),
    fNETAdiv(geom.fNETAdiv),
    fNECLayers(geom.fNECLayers),
    fECScintThick(geom.fECScintThick),
    fECPbRadThickness(geom.fECPbRadThickness),
    fSampling(geom.fSampling),
    fTrd1Angle(geom.fTrd1Angle),
    fNCellsInModule(geom.fNCellsInModule),
    fNCellsInSupMod(geom.fNCellsInSupMod),
    fNCells(geom.fNCells),
    fLongModuleSize(geom.fLongModuleSize),
    f2Trd1Dx2(geom.f2Trd1Dx2),
    fShellThickness(geom.fShellThickness),
    fEtaMaxOfTRD1(geom.fEtaMaxOfTRD1) 
{
  // Constructor
  // Local coordinates
  fParSM[0] = GetShellThickness()/2.;        
  fParSM[1] = GetPhiModuleSize() * GetNPhi()/2.;
  fParSM[2] = 350./2.;

  // SM phi boundaries - (0,1),(2,3) .. (10,11) - has the same boundaries; Nov 7, 2006 
  fPhiBoundariesOfSM.Set(fNumberOfSuperModules);
  fPhiCentersOfSM.Set(fNumberOfSuperModules/2);
  fPhiBoundariesOfSM[0] = TMath::PiOver2() - TMath::ATan2(fParSM[1] , fIPDistance); // 1th and 2th modules)
  fPhiBoundariesOfSM[1] = TMath::PiOver2() + TMath::ATan2(fParSM[1] , fIPDistance);
  fPhiCentersOfSM[0]    = TMath::PiOver2();
  for(int i=1; i<=4; i++) { // from 2th ro 9th
    fPhiBoundariesOfSM[2*i]   = fPhiBoundariesOfSM[0] + 20.*TMath::DegToRad()*i;
    fPhiBoundariesOfSM[2*i+1] = fPhiBoundariesOfSM[1] + 20.*TMath::DegToRad()*i;
    fPhiCentersOfSM[i]        = fPhiCentersOfSM[0]    + 20.*TMath::DegToRad()*i;
  }
  fPhiBoundariesOfSM[11] = 190.*TMath::DegToRad();
  fPhiBoundariesOfSM[10] = fPhiBoundariesOfSM[11] - TMath::ATan2((fParSM[1]) , fIPDistance);
  fPhiCentersOfSM[5]     = (fPhiBoundariesOfSM[10]+fPhiBoundariesOfSM[11])/2.; 

  //  for(int i=0; i<fNumberOfSuperModules; i++) fMatrixOfSM[i] = 0;

  fCentersOfCellsEtaDir.Set(fNZ*fNETAdiv);
  fCentersOfCellsXDir.Set(fNZ*fNETAdiv);
  fCentersOfCellsPhiDir.Set(fNPhi*fNPHIdiv);
  fEtaCentersOfCells.Set(fNZ*fNETAdiv*fNPhi*fNPHIdiv);
  fPhiCentersOfCells.Set(fNPhi*fNPHIdiv);

  int nphism  = GetNumberOfSuperModules()/2;
  double dphi = (GetArm1PhiMax() - GetArm1PhiMin())/nphism;
  double rpos = (GetEnvelop(0) + GetEnvelop(1))/2.;
  double phi, phiRad, xpos, ypos, zpos;
  for(int i=0; i<nphism; i++){
    phi    = GetArm1PhiMin() + dphi*(2*i+1)/2.; // phi= 90, 110, 130, 150, 170, 190
    phiRad = phi*TMath::Pi()/180.;
    xpos = rpos * TMath::Cos(phiRad);
    ypos = rpos * TMath::Sin(phiRad);
    zpos = fParSM[2];
    if(i==5) {
      xpos += (fParSM[1]/2. * TMath::Sin(phiRad)); 
      ypos -= (fParSM[1]/2. * TMath::Cos(phiRad));
    }
    // pozitive z
    int ind = 2*i;
    TGeoRotation *geoRot0 = new TGeoRotation("geoRot0", 90.0, phi, 90.0, 90.0+phi, 0.0, 0.0);
    fMatrixOfSM[ind] = new TGeoCombiTrans(Form("EmcalSM%2.2i",ind),
					  xpos,ypos, zpos, geoRot0);
    // negaive z
    ind++;
    double phiy = 90. + phi + 180.;
    if(phiy>=360.) phiy -= 360.;
    TGeoRotation *geoRot1 = new TGeoRotation("geoRot1", 90.0, phi, 90.0, phiy, 180.0, 0.0);
    fMatrixOfSM[ind] = new TGeoCombiTrans(Form("EmcalSM%2.2i",ind),
					  xpos,ypos,-zpos, geoRot1);

    delete geoRot0;
    delete geoRot1;

  } // for

}

AliJetDummyGeo::~AliJetDummyGeo()
{
  // Destructor
  delete [] fMatrixOfSM;
}

//------------------------------------------------------------------------------------
void AliJetDummyGeo::EtaPhiFromIndex(Int_t absId, Float_t& eta, Float_t& phi)
{
  // Nov 16, 2006- float to double
  // version for TRD1 only
  static TVector3 vglob;
  GetGlobal(absId, vglob);
  eta = vglob.Eta();
  phi = vglob.Phi();

}

//------------------------------------------------------------------------------------
void AliJetDummyGeo::GetGlobal(const Double_t *loc, Double_t *glob, int ind) const
{
  // Figure out the global numbering of a given supermodule from the
  // local numbering
  // Alice numbering - Jun 03,2006
  //  if(fMatrixOfSM[0] == 0) GetTransformationForSM();

  if(ind>=0 && ind < GetNumberOfSuperModules()) {
    fMatrixOfSM[ind]->LocalToMaster(loc, glob);
  }
}

//------------------------------------------------------------------------------------
void AliJetDummyGeo::GetGlobal(Int_t absId , double glob[3]) const
{ 
  // Alice numbering scheme - Jun 03, 2006
  static Int_t nSupMod, nModule, nIphi, nIeta;
  static double loc[3];

  glob[0]=glob[1]=glob[2]=0.0; // bad case
  if(RelPosCellInSModule(absId, loc)) {
    GetCellIndex(absId, nSupMod, nModule, nIphi, nIeta);
    fMatrixOfSM[nSupMod]->LocalToMaster(loc, glob);
  }
}

//------------------------------------------------------------------------------------
void AliJetDummyGeo::GetGlobal(Int_t absId , TVector3 &vglob) const
{ 
  // Alice numbering scheme - Jun 03, 2006
  static Double_t glob[3];

  GetGlobal(absId, glob);
  vglob.SetXYZ(glob[0], glob[1], glob[2]);

}

//------------------------------------------------------------------------------------
Bool_t AliJetDummyGeo::RelPosCellInSModule(Int_t absId, Double_t loc[3]) const
{
  // Alice numbering scheme - Jun 03, 2006
  loc[0] = loc[1] = loc[2]=0.0;
  if(RelPosCellInSModule(absId, loc[0],loc[1],loc[2])) {
    return kTRUE;
  }
  return kFALSE;
}

//------------------------------------------------------------------------------------
Bool_t AliJetDummyGeo::RelPosCellInSModule(Int_t absId, Double_t &xr, Double_t &yr, Double_t &zr) const
{
  // Look to see what the relative position inside a given cell is
  // for a recpoint.
  // Alice numbering scheme - Jun 08, 2006
  // In:
  // absId   - cell is as in Geant,     0<= absId   < fNCells;
  // OUT:
  // xr,yr,zr - x,y,z coordinates of cell with absId inside SM 

  // Shift index taking into account the difference between standard SM 
  // and SM of half size in phi direction
  const Int_t phiIndexShift = fCentersOfCellsPhiDir.GetSize()/4; // Nov 22, 2006; was 6 for cas 2X2
  static Int_t nSupMod, nModule, nIphi, nIeta, iphi, ieta;
  if(!CheckAbsCellId(absId)) return kFALSE;

  GetCellIndex(absId, nSupMod, nModule, nIphi, nIeta);
  GetCellPhiEtaIndexInSModule(nSupMod,nModule,nIphi,nIeta, iphi, ieta); 
 
  xr = fCentersOfCellsXDir.At(ieta);
  zr = fCentersOfCellsEtaDir.At(ieta);

  if(nSupMod<10) {
    yr = fCentersOfCellsPhiDir.At(iphi);
  } else {
    yr = fCentersOfCellsPhiDir.At(iphi + phiIndexShift);
  }

  return kTRUE;
}

//------------------------------------------------------------------------------------
Bool_t  AliJetDummyGeo::CheckAbsCellId(Int_t absId) const
{ 
  // May 31, 2006; only trd1 now
  if(absId<0 || absId >= fNCells) return kFALSE;
  else                            return kTRUE;
}

//------------------------------------------------------------------------------------
Bool_t AliJetDummyGeo::GetCellIndex(Int_t absId,Int_t &nSupMod,Int_t &nModule,Int_t &nIphi,Int_t &nIeta) const
{ 
  // 21-sep-04; 19-oct-05;
  // May 31, 2006; ALICE numbering scheme:
  // 
  // In:
  // absId   - cell is as in Geant,     0<= absId   < fNCells;
  // Out:
  // nSupMod - super module(SM) number, 0<= nSupMod < fNumberOfSuperModules;
  // nModule  - module number in SM,    0<= nModule  < fNCellsInSupMod/fNCellsInSupMod or(/2) for tow last SM (10th and 11th);
  // nIphi   - cell number in phi driection inside module; 0<= nIphi < fNPHIdiv; 
  // nIeta   - cell number in eta driection inside module; 0<= nIeta < fNETAdiv; 
  // 
  static Int_t tmp=0, sm10=0;
  if(!CheckAbsCellId(absId)) return kFALSE;

  sm10 = fNCellsInSupMod*10;
  if(absId >= sm10) { // 110 degree case; last two supermodules  
    nSupMod = (absId-sm10) / (fNCellsInSupMod/2) + 10;
    tmp     = (absId-sm10) % (fNCellsInSupMod/2);
  } else {
    nSupMod = absId / fNCellsInSupMod;
    tmp     = absId % fNCellsInSupMod;
  }

  nModule  = tmp / fNCellsInModule;
  tmp     = tmp % fNCellsInModule;
  nIphi   = tmp / fNPHIdiv;
  nIeta   = tmp % fNPHIdiv;

  return kTRUE;
}

//------------------------------------------------------------------------------------
void AliJetDummyGeo::GetCellPhiEtaIndexInSModule(Int_t nSupMod, Int_t nModule, Int_t nIphi, Int_t nIeta, int &iphi, int &ieta) const
{ 
  // 
  // Added nSupMod; Nov 25, 05
  // Alice numbering scheme  - Jun 01,2006 
  // IN:
  // nSupMod - super module(SM) number, 0<= nSupMod < fNumberOfSuperModules;
  // nModule  - module number in SM,     0<= nModule  < fNCellsInSupMod/fNCellsInSupMod or(/2) for tow last SM (10th and 11th);
  // nIphi   - cell number in phi driection inside module; 0<= nIphi < fNPHIdiv; 
  // nIeta   - cell number in eta driection inside module; 0<= nIeta < fNETAdiv; 
  // 
 // OUT:
  // ieta, iphi - indexes of cell(tower) in two dimensional grid of SM
  // ieta - have to change from 0 to (fNZ*fNETAdiv-1)
  // iphi - have to change from 0 to (fNPhi*fNPHIdiv-1 or fNPhi*fNPHIdiv/2-1)
  //
  static Int_t iphim, ietam;

  GetModulePhiEtaIndexInSModule(nSupMod,nModule, iphim, ietam); 
  //  ieta  = ietam*fNETAdiv + (1-nIeta); // x(module) = -z(SM) 
  ieta  = ietam*fNETAdiv + (fNETAdiv - 1 - nIeta); // x(module) = -z(SM) 
  iphi  = iphim*fNPHIdiv + nIphi;     // y(module) =  y(SM) 

}


//------------------------------------------------------------------------------------
void AliJetDummyGeo::GetModulePhiEtaIndexInSModule(Int_t nSupMod, Int_t nModule,  int &iphim, int &ietam) const
{ 
  // added nSupMod; - 19-oct-05 !
  // Alice numbering scheme        - Jun 01,2006 
  // ietam, iphi - indexes of module in two dimensional grid of SM
  // ietam - have to change from 0 to fNZ-1
  // iphim - have to change from 0 to nphi-1 (fNPhi-1 or fNPhi/2-1)
  static Int_t nphi;

  if(nSupMod>=10) nphi = fNPhi/2;
  else            nphi = fNPhi;

  ietam = nModule/nphi;
  iphim = nModule%nphi;
}

//------------------------------------------------------------------------------------
Bool_t AliJetDummyGeo::GetAbsCellIdFromEtaPhi(Double_t eta, Double_t phi, Int_t &absId) const
{
  // Nov 17,2006
  // stay here - phi problem as usual 
  static Int_t nSupMod, i, ieta, iphi, etaShift, nphi;
  static Double_t absEta=0.0, d=0.0, dmin=0.0, phiLoc;
  absId = nSupMod = - 1;
  if(SuperModuleNumberFromEtaPhi(eta, phi, nSupMod)) {
    // phi index first
    phi    = TVector2::Phi_0_2pi(phi);
    phiLoc = phi - fPhiCentersOfSM[nSupMod/2];
    nphi   = fPhiCentersOfCells.GetSize();
    if(nSupMod>=10) {
      phiLoc = phi - 190.*TMath::DegToRad();
      nphi /= 2;
    }

    dmin   = TMath::Abs(fPhiCentersOfCells[0]-phiLoc);
    iphi   = 0;
    for(i=1; i<nphi; i++) {
      d = TMath::Abs(fPhiCentersOfCells[i] - phiLoc);
      if(d < dmin) {
        dmin = d;
        iphi = i;
      }
    }
    // odd SM are turned with respect of even SM - reverse indexes

    // eta index
    absEta   = TMath::Abs(eta);
    etaShift = iphi*fCentersOfCellsEtaDir.GetSize();
    dmin     = TMath::Abs(fEtaCentersOfCells[etaShift]-absEta);
    ieta     = 0;
    for(i=1; i<fCentersOfCellsEtaDir.GetSize(); i++) {
      d = TMath::Abs(fEtaCentersOfCells[i+etaShift] - absEta);
      if(d < dmin) {
        dmin = d;
        ieta = i;
      }
    }

    if(eta<0) iphi = (nphi-1) - iphi;
    absId = GetAbsCellIdFromCellIndexes(nSupMod, iphi, ieta);

    return kTRUE;
  }
  return kFALSE;
}

//------------------------------------------------------------------------------------
Bool_t AliJetDummyGeo::SuperModuleNumberFromEtaPhi(Double_t eta, Double_t phi, Int_t &nSupMod) const
{ 
  // Return false if phi belongs a phi cracks between SM
 
  static Int_t i;

  if(TMath::Abs(eta) > fEtaMaxOfTRD1) return kFALSE;

  phi = TVector2::Phi_0_2pi(phi); // move phi to (0,2pi) boundaries
  for(i=0; i<6; i++) {
    if(phi>=fPhiBoundariesOfSM[2*i] && phi<=fPhiBoundariesOfSM[2*i+1]) {
      nSupMod = 2*i;
      if(eta < 0.0) nSupMod++;
      return kTRUE;
    }
  }
  return kFALSE;
}

//------------------------------------------------------------------------------------
Int_t  AliJetDummyGeo::GetAbsCellIdFromCellIndexes(Int_t nSupMod, Int_t iphi, Int_t ieta) const
{
  // Transition from super module number(nSupMod) and cell indexes (ieta,iphi) to absId
  static Int_t ietam, iphim, nModule;
  static Int_t nIeta, nIphi; // cell indexes in module

  GetModuleIndexesFromCellIndexesInSModule(nSupMod, iphi, ieta, ietam, iphim, nModule);

  nIeta = ieta%fNETAdiv;
  nIeta = fNETAdiv - 1 - nIeta;
  nIphi = iphi%fNPHIdiv;

  return GetAbsCellId(nSupMod, nModule, nIphi, nIeta);
}

//------------------------------------------------------------------------------------
void  AliJetDummyGeo::GetModuleIndexesFromCellIndexesInSModule(Int_t nSupMod, Int_t iphi, Int_t ieta, 
			Int_t &iphim, Int_t &ietam, Int_t &nModule) const
{
  // Transition from cell indexes (ieta,iphi) to module indexes (ietam,iphim, nModule)
  static Int_t nphi;
  nphi  = GetNumberOfModuleInPhiDirection(nSupMod);  

  ietam  = ieta/fNETAdiv;
  iphim  = iphi/fNPHIdiv;
  nModule = ietam * nphi + iphim; 
}

//------------------------------------------------------------------------------------
Int_t AliJetDummyGeo::GetAbsCellId(Int_t nSupMod, Int_t nModule, Int_t nIphi, Int_t nIeta) const
{ 
  // 27-aug-04; 
  // corr. 21-sep-04; 
  //       13-oct-05; 110 degree case
  // May 31, 2006; ALICE numbering scheme:
  // 0 <= nSupMod < fNumberOfSuperModules
  // 0 <= nModule  < fNPHI * fNZ ( fNPHI * fNZ/2 for fKey110DEG=1)
  // 0 <= nIphi   < fNPHIdiv
  // 0 <= nIeta   < fNETAdiv
  // 0 <= absid   < fNCells
  static Int_t id=0; // have to change from 0 to fNCells-1
  if(nSupMod >= 10) { // 110 degree case; last two supermodules
    id  = fNCellsInSupMod*10 + (fNCellsInSupMod/2)*(nSupMod-10);
  } else {
    id  = fNCellsInSupMod*nSupMod;
  }
  id += fNCellsInModule *nModule;
  id += fNPHIdiv *nIphi;
  id += nIeta;
  if(id<0 || id >= fNCells) {
    id = -TMath::Abs(id); // if negative something wrong
  }
  return id;
}

//------------------------------------------------------------------------------------
Bool_t AliJetDummyGeo::GetPhiBoundariesOfSMGap(Int_t nPhiSec, Double_t &phiMin, Double_t &phiMax) const
{
  // 0<= nPhiSec <=4; phi in rad
  // 0;  gap boundaries between  0th&2th  | 1th&3th SM
  // 1;  gap boundaries between  2th&4th  | 3th&5th SM
  // 2;  gap boundaries between  4th&6th  | 5th&7th SM
  // 3;  gap boundaries between  6th&8th  | 7th&9th SM
  // 4;  gap boundaries between  8th&10th | 9th&11th SM
  if(nPhiSec<0 || nPhiSec >4) return kFALSE; 
  phiMin = fPhiBoundariesOfSM[2*nPhiSec+1];
  phiMax = fPhiBoundariesOfSM[2*nPhiSec+2];
  return kTRUE; 
}

//------------------------------------------------------------------------------------
void  AliJetDummyGeo::GetTransformationForSM()
{
  // Uses the geometry manager to load the transformation matrix
  // for the supermodules
  // Unused after 19 Jan, 2007 - keep for compatibility; 

  return;
  static Bool_t transInit=kFALSE;
  if(transInit) return;

  int i=0;
  if(gGeoManager == 0) {
    Info("CreateTransformationForSM() "," Load geometry : TGeoManager::Import()");
    assert(0);
  }

  TGeoNode *tn = gGeoManager->GetTopNode();
  TGeoNode *node=0, *xen1 = 0;
  for(i=0; i<tn->GetNdaughters(); i++) {
    node = tn->GetDaughter(i);
    TString ns(node->GetName());
    if(ns.Contains(GetNameOfEMCALEnvelope())) {
      xen1 = node;
      break;
    }
  }

  if(!xen1) {
    Info("CreateTransformationForSM() "," geometry has not EMCAL envelope with name %s", 
    GetNameOfEMCALEnvelope());
    assert(0);
  }
  printf(" i %i : EMCAL Envelope is %s : #SM %i \n", i, xen1->GetName(), xen1->GetNdaughters());
  for(i=0; i<xen1->GetNdaughters(); i++) {
    TGeoNodeMatrix *sm = (TGeoNodeMatrix*)xen1->GetDaughter(i);
    fMatrixOfSM[i] = sm->GetMatrix();
  }
  printf("transInit %d: ", transInit);
  transInit = kTRUE;
}