/data/refman/pasoursint/CMSSW_6_1_2_SLHC2/src/Geometry/HcalTowerAlgo/src/HcalDDDGeometryLoader.cc

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#include "Geometry/HcalTowerAlgo/interface/HcalDDDGeometryLoader.h"
#include "DataFormats/HcalDetId/interface/HcalDetId.h"
#include "Geometry/CaloGeometry/interface/CaloCellGeometry.h"
#include "Geometry/CaloGeometry/interface/IdealObliquePrism.h"
#include "Geometry/CaloGeometry/interface/IdealZPrism.h"
#include "Geometry/CaloEventSetup/interface/CaloGeometryLoader.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include<string>

typedef CaloCellGeometry::CCGFloat CCGFloat ;

//#define DebugLog

HcalDDDGeometryLoader::HcalDDDGeometryLoader(const DDCompactView & cpv) {
  std::string name = "HcalHits";
  numberingFromDDD = new HcalNumberingFromDDD(name, cpv);
}

HcalDDDGeometryLoader::~HcalDDDGeometryLoader() {
  delete numberingFromDDD;
}


HcalDDDGeometryLoader::ReturnType 
HcalDDDGeometryLoader::load(const HcalTopology& topo, DetId::Detector det, int subdet) {

  HcalSubdetector  hsub        = static_cast<HcalSubdetector>(subdet);


  HcalDDDGeometry* gDDD ( new HcalDDDGeometry(topo) );
  ReturnType geom ( gDDD );

  if ( geom->cornersMgr() == 0 ) {
     const unsigned int count (numberingFromDDD->numberOfCells(HcalBarrel ) +
                               numberingFromDDD->numberOfCells(HcalEndcap ) +
                               numberingFromDDD->numberOfCells(HcalForward) +
                               numberingFromDDD->numberOfCells(HcalOuter  ) );
     geom->allocateCorners( count ) ;
  }

  //  if( geom->cornersMgr() == 0 )  geom->allocateCorners( 2592 ) ;

  if ( geom->parMgr()     == 0 ) geom->allocatePar( 500, 3 ) ;

  fill (hsub, gDDD, geom );
  return geom ;
}

HcalDDDGeometryLoader::ReturnType 
HcalDDDGeometryLoader::load(const HcalTopology& topo) {

  HcalDDDGeometry* gDDD ( new HcalDDDGeometry(topo) );
   ReturnType geom ( gDDD );

   if( geom->cornersMgr() == 0 ) {
      const unsigned int count (numberingFromDDD->numberOfCells(HcalBarrel ) +
                                numberingFromDDD->numberOfCells(HcalEndcap ) +
                                numberingFromDDD->numberOfCells(HcalForward) +
                                numberingFromDDD->numberOfCells(HcalOuter  ) );
     geom->allocateCorners( count ) ;
   }
   if( geom->parMgr()     == 0 ) geom->allocatePar( 500, 3 ) ;

   fill(HcalBarrel,  gDDD, geom); 
   fill(HcalEndcap,  gDDD, geom); 
   fill(HcalForward, gDDD, geom); 
   fill(HcalOuter,   gDDD, geom);
   return geom ;
}

void HcalDDDGeometryLoader::fill(HcalSubdetector          subdet, 
                                 HcalDDDGeometry*         geometryDDD,
                                 CaloSubdetectorGeometry* geom           ) {

  // start by making the new HcalDetIds
  std::vector<HcalCellType> hcalCells = numberingFromDDD->HcalCellTypes(subdet);
  geometryDDD->insertCell(hcalCells);
#ifdef DebugLog
  LogDebug("HCalGeom") << "HcalDDDGeometryLoader::fill gets " 
                       << hcalCells.size() << " cells for subdetector " 
                       << subdet;
#endif                   
  // Make the new HcalDetIds and the cells

  double deg = M_PI/180.;
  std::vector<HcalDetId> hcalIds;
  for (unsigned int i=0; i<hcalCells.size(); i++) {
    int etaRing  = hcalCells[i].etaBin();
    int depthBin = hcalCells[i].depthSegment();
    int phiInc   = 4/hcalCells[i].nPhiModule();
    unsigned int iphi = 1;
    if (hcalCells[i].unitPhi() == 4) iphi = 3;
    double  dphi = (hcalCells[i].phiBinWidth())*deg;
    double   phi =-(hcalCells[i].phiOffset())*deg + 0.5*dphi;
    std::vector<int>missPlus  = hcalCells[i].missingPhiPlus();
    std::vector<int>missMinus = hcalCells[i].missingPhiMinus();
#ifdef DebugLog
    LogDebug("HCalGeom") << "HcalDDDGeometryLoader: Subdet " << subdet
                         << " eta " << etaRing << " depth " << depthBin
                         << " modules " << hcalCells[i].nPhiModule() << " "
                         << phiInc << " phi " << phi/deg << " " << dphi/deg
                         << " Missing " << missPlus.size() << "/"
                         << missMinus.size();
#endif
    for (int k = 0; k < hcalCells[i].nPhiBins(); k++) {
      bool ok = true;
      for (unsigned int kk = 0; kk < missPlus.size(); kk++)
        if (iphi == (unsigned int)(missPlus[kk])) ok = false;
      if (ok) {
#ifdef DebugLog
        LogDebug("HCalGeom") << "HcalDDDGeometryLoader::fill Cell " << i
                             << " eta " << etaRing << " phi " << iphi << "("
                             << phi/deg << ", " << dphi/deg << ") depth "
                             << depthBin;
#endif
        HcalDetId id(subdet, etaRing, iphi, depthBin);
        hcalIds.push_back(id);
        makeCell(id,hcalCells[i],phi,dphi,geom) ;
      }
      if (hcalCells[i].nHalves() > 1) {
        ok = true;
        for (unsigned int kk = 0; kk < missMinus.size(); kk++)
          if (iphi == (unsigned int)(missMinus[kk])) ok = false;
        if (ok) {
#ifdef DebugLog
          LogDebug("HCalGeom") << "HcalDDDGeometryLoader::fill Cell " << i
                               << " eta " << -etaRing << " phi " << iphi <<" ("
                               << phi/deg << ", " << dphi/deg << ") depth "
                               << depthBin;
#endif
          HcalDetId id(subdet, -etaRing, iphi, depthBin);
          hcalIds.push_back(id);
          makeCell(id,hcalCells[i],phi,dphi,geom) ;
        }
      }
      iphi += phiInc;
      phi  += dphi;
    }
  }
  
  edm::LogInfo("HCalGeom") << "Number of HCAL DetIds made for " << subdet
                           << " is " << hcalIds.size();
}

void
HcalDDDGeometryLoader::makeCell( const HcalDetId& detId,
                                 HcalCellType hcalCell,
                                 double phi, 
                                 double dphi,
                                 CaloSubdetectorGeometry* geom) const {

  // the two eta boundaries of the cell
  double          eta1   = hcalCell.etaMin();
  double          eta2   = hcalCell.etaMax();
  HcalSubdetector subdet = detId.subdet();
  double          eta    = 0.5*(eta1+eta2) * detId.zside();
  double          deta   = (eta2-eta1);
  double          theta  = 2.0*atan(exp(-eta));

  // barrel vs forward
  bool rzType   = hcalCell.depthType();
  bool isBarrel = (subdet == HcalBarrel || subdet == HcalOuter);

  double          z, r, thickness;
#ifdef DebugLog
  double          r0, r1, r2;
#endif
  if (rzType) {
    r          = hcalCell.depthMin();
    if (isBarrel) {
      z         = r * sinh(eta); // sinh(eta) == 1/tan(theta)
      thickness = (hcalCell.depthMax() - r) * cosh(eta); // cosh(eta) == 1/sin(theta)
#ifdef DebugLog
      r1        = r;
      r2        = hcalCell.depthMax();
      r0        = 0.5*(r1+r2);
#endif
    } else {
      z         = r * sinh(eta2);
      thickness = 2. * hcalCell.halfSize();
      r         = z/sinh(std::abs(eta));
#ifdef DebugLog
      r0        = z/sinh(std::abs(eta));
      r1        = z/sinh(std::abs(eta)+0.5*deta);
      r2        = z/sinh(std::abs(eta)-0.5*deta);
#endif
    }
#ifdef DebugLog
    LogDebug("HCalGeom") << "HcalDDDGeometryLoader::makeCell SubDet " << subdet
                         << " eta = " << eta << " theta = " << theta
                         << " r = " << r << " thickness = " << thickness
                         << " r0-r2 (" << r0 << ":" << r1 << ":" << r2 << ")";
#endif
  } else {
    z          = hcalCell.depthMin();
    thickness  = hcalCell.depthMax() - z;
    z         *= detId.zside(); // get the sign right.
    r          = z * tan(theta);
    thickness /= std::abs(cos(theta));
#ifdef DebugLog
    r0         = z/sinh(std::abs(eta));
    r1         = z/sinh(std::abs(eta)+0.5*deta);
    r2         = z/sinh(std::abs(eta)-0.5*deta);
    LogDebug("HCalGeom") << "HcalDDDGeometryLoader::makeCell SubDet " << subdet
                         << " eta = " << eta << " theta = " << theta
                         << " z = " << z << " r = " << r << " thickness = "
                         << thickness << " r0-r2 (" << r0 << ":" << r1 << ":"
                         << r2 << ")";    
#endif
  }

  double x = r * cos(phi);
  double y = r * sin(phi);
  GlobalPoint point(x,y,z);

#ifdef DebugLog
  LogDebug("HCalGeom") << "HcalDDDGeometryLoader::makeCell for " << detId
                       << " Point " << point << " deta = " << deta 
                       << " dphi = " << dphi << " thickness = " << thickness
                       << " isBarrel = " << isBarrel << " " << rzType;
#endif

  std::vector<CCGFloat> hp ;
  hp.reserve(3) ;
  
  if (subdet==HcalForward) 
  {
    hp.push_back(deta/2.) ;
    hp.push_back(dphi/2.) ;
    hp.push_back(thickness/2.) ;
  }
  else
  { 
    const double sign ( isBarrel ? 1 : -1 ) ;
    hp.push_back(deta/2.) ;
    hp.push_back(dphi/2.) ;
    hp.push_back(sign*thickness/2.) ;
  }
  geom->newCell( point, point, point,
                 CaloCellGeometry::getParmPtr( hp, 
                                               geom->parMgr(), 
                                               geom->parVecVec() ),
                 detId ) ;
}