/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_14/src/Alignment/TrackerAlignment/src/TrackerAlignableId.cc

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#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "DataFormats/SiStripDetId/interface/TOBDetId.h"
#include "DataFormats/SiStripDetId/interface/TIBDetId.h"
#include "DataFormats/SiStripDetId/interface/TIDDetId.h"
#include "DataFormats/SiStripDetId/interface/TECDetId.h"
#include "DataFormats/SiPixelDetId/interface/PXBDetId.h"
#include "DataFormats/SiPixelDetId/interface/PXFDetId.h"

#include "Alignment/TrackerAlignment/interface/TrackerAlignableId.h"


//__________________________________________________________________________________________________
// Returns alignable object id and layer (or wheel, or disk) number from a DetId
std::pair<int,int> TrackerAlignableId::typeAndLayerFromDetId( const DetId& detId ) const
{

  int layerNumber = 0;

  unsigned int subdetId = static_cast<unsigned int>(detId.subdetId());

  if ( subdetId == StripSubdetector::TIB) 
        { 
          TIBDetId tibid(detId.rawId()); 
          layerNumber = tibid.layer();
        }
  else if ( subdetId ==  StripSubdetector::TOB )
        { 
          TOBDetId tobid(detId.rawId()); 
          layerNumber = tobid.layer();
        }
  else if ( subdetId ==  StripSubdetector::TID) 
        { 
          TIDDetId tidid(detId.rawId());
          layerNumber = tidid.wheel();
        }
  else if ( subdetId ==  StripSubdetector::TEC )
        { 
          TECDetId tecid(detId.rawId()); 
          layerNumber = tecid.wheel(); 
        }
  else if ( subdetId ==  PixelSubdetector::PixelBarrel ) 
        { 
          PXBDetId pxbid(detId.rawId()); 
          layerNumber = pxbid.layer();  
        }
  else if ( subdetId ==  PixelSubdetector::PixelEndcap ) 
        { 
          PXFDetId pxfid(detId.rawId()); 
          layerNumber = pxfid.disk();  
        }
  else
        edm::LogWarning("LogicError") << "Unknown subdetid: " <<  subdetId;


  return std::make_pair( subdetId, layerNumber );

}