SpecialCylindricalMFGrid.h

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#ifndef Interpolation_SpecialCylindricalMFGrid_h
#define Interpolation_SpecialCylindricalMFGrid_h

#include "FWCore/Utilities/interface/Visibility.h"
#include "MFGrid3D.h"

namespace magneticfield::interpolation {
  class binary_ifstream;
}

class dso_internal SpecialCylindricalMFGrid : public MFGrid3D {
public:
  using binary_ifstream = magneticfield::interpolation::binary_ifstream;

  SpecialCylindricalMFGrid(binary_ifstream& istr, const GloballyPositioned<float>& vol, int gridType);

  LocalVector uncheckedValueInTesla(const LocalPoint& p) const override;

  void dump() const override;

  void toGridFrame(const LocalPoint& p, double& a, double& b, double& c) const override;

  LocalPoint fromGridFrame(double a, double b, double c) const override;

private:
  //double RParAsFunOfPhi[4];     // R = f(phi) or const. (0,2: const. par. ; 1,3: const./sin(phi))

  double stepConstTerm_;
  double stepPhiTerm_;
  double startConstTerm_;
  double startPhiTerm_;

  double stepSize(double sinPhi) const { return stepConstTerm_ + stepPhiTerm_ / sinPhi; }
  double startingPoint(double sinPhi) const { return startConstTerm_ + startPhiTerm_ / sinPhi; }
  bool sector1;
};

#endif