/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_5/src/Geometry/TrackerGeometryBuilder/src/TrackerGeomBuilderFromGeometricDet.cc

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#include "Geometry/TrackerGeometryBuilder/interface/TrackerGeomBuilderFromGeometricDet.h"
#include "Geometry/TrackerGeometryBuilder/interface/TrackerGeometry.h"
#include "Geometry/TrackerGeometryBuilder/interface/PlaneBuilderForGluedDet.h"
#include "Geometry/CommonDetUnit/interface/GeomDetUnit.h"
#include "Geometry/TrackerGeometryBuilder/interface/GluedGeomDet.h"
#include "Geometry/TrackerGeometryBuilder/interface/PixelGeomDetType.h"
#include "Geometry/TrackerGeometryBuilder/interface/PixelGeomDetUnit.h"
#include "Geometry/TrackerGeometryBuilder/interface/StripGeomDetType.h"
#include "Geometry/TrackerGeometryBuilder/interface/StripGeomDetUnit.h"
#include "Geometry/TrackerGeometryBuilder/interface/PixelTopologyBuilder.h"
#include "Geometry/TrackerGeometryBuilder/interface/StripTopologyBuilder.h"
#include "DataFormats/DetId/interface/DetId.h"
#include "DataFormats/SiStripDetId/interface/StripSubdetector.h"
#include "DataFormats/GeometrySurface/interface/MediumProperties.h"

#include <cfloat>
#include <cassert>
using std::vector;
using std::string;

namespace {
  void verifyDUinTG(TrackerGeometry const & tg) {
    int off=0; int end=0;
    for ( int i=1; i!=7; i++) {
      auto det = GeomDetEnumerators::tkDetEnum[i];
      off = tg.offsetDU(det);
      end = tg.endsetDU(det); assert(end>off);
      for (int j=off; j!=end; ++j) {
        assert(tg.detUnits()[j]->geographicalId().subdetId()==i);
        assert(tg.detUnits()[j]->subDetector()==det);
        assert(tg.detUnits()[j]->index()==j);
      }
    }
  }
}

TrackerGeometry*
TrackerGeomBuilderFromGeometricDet::build( const GeometricDet* gd, const edm::ParameterSet& pSet )
{
  bool upgradeGeometry = false;
  int BIG_PIX_PER_ROC_X = 1;
  int BIG_PIX_PER_ROC_Y = 2;
  
  if( pSet.exists( "trackerGeometryConstants" ))
  {
    const edm::ParameterSet tkGeomConsts( pSet.getParameter<edm::ParameterSet>( "trackerGeometryConstants" ));
    upgradeGeometry = tkGeomConsts.getParameter<bool>( "upgradeGeometry" );  
    BIG_PIX_PER_ROC_X = tkGeomConsts.getParameter<int>( "BIG_PIX_PER_ROC_X" );
    BIG_PIX_PER_ROC_Y = tkGeomConsts.getParameter<int>( "BIG_PIX_PER_ROC_Y" );
  }
    
  thePixelDetTypeMap.clear();
  theStripDetTypeMap.clear();
   
  TrackerGeometry* tracker = new TrackerGeometry(gd);
  std::vector<const GeometricDet*> comp;
  gd->deepComponents(comp);

  std::vector<const GeometricDet*> dets[6];
  std::vector<const GeometricDet*> & pixB = dets[0]; pixB.reserve(comp.size());
  std::vector<const GeometricDet*> & pixF = dets[1]; pixF.reserve(comp.size());
  std::vector<const GeometricDet*> & tib  = dets[2];  tib.reserve(comp.size());
  std::vector<const GeometricDet*> & tid  = dets[3];  tid.reserve(comp.size());
  std::vector<const GeometricDet*> & tob  = dets[4];  tob.reserve(comp.size());
  std::vector<const GeometricDet*> & tec  = dets[5];  tec.reserve(comp.size());

  for(u_int32_t i = 0;i<comp.size();i++)
    dets[comp[i]->geographicalID().subdetId()-1].push_back(comp[i]);
  
  // this order is VERY IMPORTANT!!!!!
  buildPixel(pixB,tracker,GeomDetEnumerators::SubDetector::PixelBarrel,
             upgradeGeometry,
             BIG_PIX_PER_ROC_X,
             BIG_PIX_PER_ROC_Y); //"PixelBarrel" 
  buildPixel(pixF,tracker,GeomDetEnumerators::SubDetector::PixelEndcap,
             upgradeGeometry,
             BIG_PIX_PER_ROC_X,
             BIG_PIX_PER_ROC_Y); //"PixelEndcap" 
  buildSilicon(tib,tracker,GeomDetEnumerators::SubDetector::TIB, "barrel");//"TIB"      
  buildSilicon(tid,tracker,GeomDetEnumerators::SubDetector::TID, "endcap");//"TID" 
  buildSilicon(tob,tracker,GeomDetEnumerators::SubDetector::TOB, "barrel");//"TOB"      
  buildSilicon(tec,tracker,GeomDetEnumerators::SubDetector::TEC, "endcap");//"TEC"        
  buildGeomDet(tracker);//"GeomDet"

  verifyDUinTG(*tracker);

  return tracker;
}

void TrackerGeomBuilderFromGeometricDet::buildPixel(std::vector<const GeometricDet*>  const & gdv, 
                                                    TrackerGeometry* tracker,
                                                    GeomDetType::SubDetector det,
                                                    bool upgradeGeometry,
                                                    int BIG_PIX_PER_ROC_X, // in x direction, rows. BIG_PIX_PER_ROC_X = 0 for SLHC
                                                    int BIG_PIX_PER_ROC_Y) // in y direction, cols. BIG_PIX_PER_ROC_Y = 0 for SLHC
{
  tracker->setOffsetDU(det);

  for(u_int32_t i=0; i<gdv.size(); i++){

    std::string const & detName = gdv[i]->name().fullname();
    if (thePixelDetTypeMap.find(detName) == thePixelDetTypeMap.end()) {
      std::auto_ptr<const Bounds> bounds(gdv[i]->bounds());
      
      PixelTopology* t = 
          PixelTopologyBuilder().build(&*bounds,
                                       upgradeGeometry,
                                       gdv[i]->pixROCRows(),
                                       gdv[i]->pixROCCols(),
                                       BIG_PIX_PER_ROC_X,
                                       BIG_PIX_PER_ROC_Y,
                                       gdv[i]->pixROCx(), gdv[i]->pixROCy());
      
      thePixelDetTypeMap[detName] = new PixelGeomDetType(t,detName,det);
      tracker->addType(thePixelDetTypeMap[detName]);
    }

    PlaneBuilderFromGeometricDet::ResultType plane = buildPlaneWithMaterial(gdv[i]);
    GeomDetUnit* temp =  new PixelGeomDetUnit(&(*plane),thePixelDetTypeMap[detName],gdv[i]);

    tracker->addDetUnit(temp);
    tracker->addDetUnitId(gdv[i]->geographicalID());
  }
  tracker->setEndsetDU(det);

}

void TrackerGeomBuilderFromGeometricDet::buildSilicon(std::vector<const GeometricDet*>  const & gdv, 
                                                      TrackerGeometry* tracker,
                                                      GeomDetType::SubDetector det,
                                                      const std::string& part)
{ 
  tracker->setOffsetDU(det);

  for(u_int32_t i=0;i<gdv.size();i++){

    std::string const & detName = gdv[i]->name().fullname();
    if (theStripDetTypeMap.find(detName) == theStripDetTypeMap.end()) {
       std::auto_ptr<const Bounds> bounds(gdv[i]->bounds());
       StripTopology* t =
           StripTopologyBuilder().build(&*bounds,
                                       gdv[i]->siliconAPVNum(),
                                       part);
      theStripDetTypeMap[detName] = new  StripGeomDetType( t,detName,det,
                                                   gdv[i]->stereo());
      tracker->addType(theStripDetTypeMap[detName]);
    }
     
    StripSubdetector sidet( gdv[i]->geographicalID());
    double scale  = (sidet.partnerDetId()) ? 0.5 : 1.0 ;        

    PlaneBuilderFromGeometricDet::ResultType plane = buildPlaneWithMaterial(gdv[i],scale);  
    GeomDetUnit* temp = new StripGeomDetUnit(&(*plane), theStripDetTypeMap[detName],gdv[i]);
    
    tracker->addDetUnit(temp);
    tracker->addDetUnitId(gdv[i]->geographicalID());
  }  
  tracker->setEndsetDU(det);

}


void TrackerGeomBuilderFromGeometricDet::buildGeomDet(TrackerGeometry* tracker){
  PlaneBuilderForGluedDet gluedplaneBuilder;
  std::vector<GeomDetUnit*> const & gdu= tracker->detUnits();
  std::vector<DetId> const & gduId = tracker->detUnitIds();

  for(u_int32_t i=0;i<gdu.size();i++){
    StripSubdetector sidet( gduId[i].rawId());
    tracker->addDet((GeomDet*) gdu[i]);
    tracker->addDetId(gduId[i]);      
    if(sidet.glued()!=0&&sidet.stereo()==1){
      int partner_pos=-1;
      for(u_int32_t jj=0;jj<gduId.size();jj++){
        if(sidet.partnerDetId()== gduId[jj]) {
          partner_pos=jj;
          break;
        }
      }
      const GeomDetUnit* dus = gdu[i];
      if(partner_pos==-1){
        throw cms::Exception("Configuration") <<"No partner detector found \n"
                                        <<"There is a problem on Tracker geometry configuration\n";
      }
      const GeomDetUnit* dum = gdu[partner_pos];
      std::vector<const GeomDetUnit *> glued(2);
      glued[0]=dum;
      glued[1]=dus;
      PlaneBuilderForGluedDet::ResultType plane = gluedplaneBuilder.plane(glued);
      GluedGeomDet* gluedDet = new GluedGeomDet(&(*plane),dum,dus);
      tracker->addDet((GeomDet*) gluedDet);
      tracker->addDetId(DetId(sidet.glued()));
    }
  }
}

PlaneBuilderFromGeometricDet::ResultType
TrackerGeomBuilderFromGeometricDet::buildPlaneWithMaterial(const GeometricDet* gd,
                                                           double scale) const
{
  PlaneBuilderFromGeometricDet planeBuilder;
  PlaneBuilderFromGeometricDet::ResultType plane = planeBuilder.plane(gd);  
  //
  // set medium properties (if defined)
  //
  plane->setMediumProperties(MediumProperties(gd->radLength()*scale,gd->xi()*scale));

  return plane;
}