bSlab.h

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#ifndef bSlab_H
#define bSlab_H

#include "MagneticField/GeomBuilder/src/MagGeoBuilderFromDDD.h"
#include "MagneticField/GeomBuilder/src/volumeHandle.h"
#include "DataFormats/GeometryVector/interface/Pi.h"

class MagBSlab;

class MagGeoBuilderFromDDD::bSlab {
public:
  bSlab(handles::const_iterator begin, handles::const_iterator end);

  ~bSlab();
 
  const float RN() const {
    return volumes.front()->RN();
  }

  // FIXME: use volumeHandle [max|min]Phi, which returns phi at median of
  // phi plane (not absolute limits). Used by: bRod ctor (only for dphi)
  Geom::Phi<float> minPhi() const;

  Geom::Phi<float> maxPhi() const;  

  MagBSlab* buildMagBSlab() const;

private:
  handles volumes; // pointers to all volumes in the slab
  mutable MagBSlab* mslab;
};

#endif