PHField3DCartesian.h

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#ifndef PHFIELD_PHFIELD3DCARTESIAN_H
#define PHFIELD_PHFIELD3DCARTESIAN_H

#include "PHField.h"

#include <cmath>
#include <string>

class PHField3DCartesian : public PHField
{
 public:
  PHField3DCartesian(const std::string &fname, const float magfield_rescale = 1.0);
  ~PHField3DCartesian() override;

  void GetFieldValue(const double Point[4], double *Bfield) const override;

 private:
  std::string filename;
  double xmin = 1000000;
  double xmax = -1000000;
  double ymin = 1000000;
  double ymax = -1000000;
  double zmin = 1000000;
  double zmax = -1000000;
  double xstepsize = NAN;
  double ystepsize = NAN;
  double zstepsize = NAN;
  // these are updated in a const method
  // to cache previous values
  mutable double xyz[2][2][2][3];
  mutable double bf[2][2][2][3];
  mutable double xkey_save = NAN;
  mutable double ykey_save = NAN;
  mutable double zkey_save = NAN;
  mutable int cache_hits = 0;
  mutable int cache_misses = 0;
};

#endif