DTDriftTimeParametrization.h

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#ifndef DTDriftTimeParametrization_H
#define DTDriftTimeParametrization_H

#define N_alpha     11
#define N_By         5
#define N_Bz         5
#define N_Par_t     19
#define N_Sigma_t    7


class DTDriftTimeParametrization {
public:
  DTDriftTimeParametrization();

  virtual ~DTDriftTimeParametrization();

  typedef struct {
    double v_drift, t_drift, delta_t, t_width_m, t_width_p ;
  } drift_time ;

  unsigned short MB_DT_drift_time (double x,
                   double alpha,
                   double by,
                   double bz,
                   short ifl,
                   drift_time *DT,
                   short interpolate) const;

private:
  double MB_DT_time      (double , double *) const;
  double MB_DT_delta_t   (double , double *) const;
  double MB_DT_sigma_t_m (double , double *) const;
  double MB_DT_sigma_t_p (double , double *) const;

  unsigned short MB_DT_Check_boundaries (double distime,
                     double alpha,
                     double by,
                     double bz,
                     short ifl) const;

  void MB_DT_Get_grid_values (double Var,
                  unsigned short *pi,
                  unsigned short *pj,
                  short Initial,
                  unsigned short N,
                  const double *Values) const;
  
  void MB_DT_Get_grid_points (double alpha, 
                  double by,
                  double bz,
                  unsigned short *p_alpha,
                  unsigned short *p_By,
                  unsigned short *p_Bz,
                  unsigned short *q_alpha,
                  unsigned short *q_By,
                  unsigned short *q_Bz) const;
  
  double MB_DT_MLInterpolation (double *al,
                double *by,
                double *bz,
                double *f) const;
  
  /*** Points of the grid ***/
  static const double alpha_value[N_alpha];
  static const double    By_value[N_By];
  static const double    Bz_value[N_Bz];

  /*** Parameter values ***/
  static const double fun_t[N_alpha][N_By][N_Bz][N_Par_t];
  static const double fun_sigma_t[N_alpha][N_By][N_Bz][N_Sigma_t];

  /*** skew factor ***/
  static const double velocitySkew;

};
#endif