AnalyticFieldModel.h

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#ifndef ANALYTICFIELDMODEL_H
#define ANALYTICFIELDMODEL_H

#include <TVector3.h>

#include <cmath>

class TFormula;

class AnalyticFieldModel
{
 public:
  AnalyticFieldModel(float _ifc_radius, float _ofc_radius, float _z_max, float scalefactor = 1);
  explicit AnalyticFieldModel(const AnalyticFieldModel &) = delete;
  AnalyticFieldModel &operator=(const AnalyticFieldModel &) = delete;

  TVector3 E(const TVector3 &pos);                     // field as a function of position
  double Rho(const TVector3 &pos);                     // charge density as a function of position
  TVector3 Eint(float zfinal, const TVector3 &start);  // field integral from start point to position zfinal.

 private:
  TFormula *vTestFunction1{nullptr};
  TFormula *rhoTestFunction1{nullptr};
  TFormula *erTestFunction1{nullptr};
  TFormula *ePhiTestFunction1{nullptr};
  TFormula *ezTestFunction1{nullptr};
  TFormula *intErDzTestFunction1{nullptr};

  TFormula *intEPhiDzTestFunction1{nullptr};

  TFormula *intEzDzTestFunction1{nullptr};
};

#endif