/data/refman/pasoursint/CMSSW_5_2_7_hltpatch2/src/MagneticField/Layers/interface/MagBLayer.h

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#ifndef MagBLayer_H
#define MagBLayer_H

#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include <vector>

class MagBSector;
class MagVolume;
template <class T> class PeriodicBinFinderInPhi;

class MagBLayer {
public:
  MagBLayer(std::vector<MagBSector*>& sectors, double rMin);

  MagBLayer(MagVolume* aVolume, double rMin);

  virtual ~MagBLayer();

  MagVolume * findVolume(const GlobalPoint & gp, double tolerance) const;
  
  double minR() const {return theRMin;}

private:
  // To support either the case of a simple one-volume layer or a
  // composite structure we have both theSectors or theSingleVolume.
  // Only one can be active at a time; not very elegant, but acceptable.
  std::vector<MagBSector*> theSectors;
  MagVolume* theSingleVolume; 
  double theRMin;

  PeriodicBinFinderInPhi<float> * theBinFinder;

};
#endif