/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_13_patch3/src/Geometry/CSCGeometry/interface/CSCLayer.h

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#ifndef Geometry_CSCGeometry_CSCLayer_H
#define Geometry_CSCGeometry_CSCLayer_H

#include <DataFormats/MuonDetId/interface/CSCDetId.h>

#include <Geometry/CommonDetUnit/interface/GeomDetUnit.h>
#include <Geometry/CommonDetUnit/interface/GeomDetType.h>
#include <Geometry/CSCGeometry/interface/CSCLayerGeometry.h>
#include <Geometry/CSCGeometry/interface/CSCChamber.h>
#include <DataFormats/GeometryVector/interface/GlobalPoint.h>
#include <DataFormats/GeometrySurface/interface/BoundPlane.h>

//#include <boost/shared_ptr.hpp>
//typedef boost::shared_ptr<CSCChamber> Pointer2Chamber;

class CSCLayer : public GeomDetUnit {

public:

  CSCLayer( const BoundPlane::BoundPlanePointer sp, CSCDetId id, const CSCChamber* ch, const CSCLayerGeometry* geo ) : 
  GeomDetUnit( sp ), theId( id ), theChamber( ch ), theGeometry( geo ) {
    setDetId(id);
}

  const GeomDetType& type() const { return chamber()->type(); }

  const Topology& topology() const { return *(geometry()->topology()); }


  CSCDetId id() const { return theId; }

  const CSCLayerGeometry* geometry() const { return theGeometry; }

  const CSCChamber* chamber() const { return theChamber; }
  
  GlobalPoint centerOfStrip(int strip) const;

  GlobalPoint centerOfWireGroup(int wireGroup) const;

private:

  CSCDetId theId;

  const CSCChamber* theChamber; // NOT owned
  // Pointer2Chamber theChamber; // use a smart pointer instead

  // Local geometry is handled by the LayerGeometry
  // but only the Layer itself knows how to transform to the 
  // global frame so global calculations are handled by the
  // Layer not the LayerGeometry.
  const CSCLayerGeometry* theGeometry; // must have topology()
};

#endif // Geometry_CSCGeometry_CSCLayer_H