DMagneticFieldMapPSConst.h

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// $Id$
//
//    File: DMagneticFieldMapPSConst.h
//

#ifndef _DMagneticFieldMapPSConst_
#define _DMagneticFieldMapPSConst_

#include <JANA/jerror.h>

#include "DMagneticFieldMapPS.h"

#include <vector>
#include <string>
using std::vector;
using std::string;

#include <JANA/JApplication.h>
#include <JANA/JCalibration.h>
using namespace jana;

class DMagneticFieldMapPSConst:public DMagneticFieldMapPS{
   public:
      DMagneticFieldMapPSConst(JApplication *japp, string namepath = "Magnets/PairSpectrometer/PS_const_field");
      DMagneticFieldMapPSConst(JCalibration *jcalib, string namepath = "Magnets/PairSpectrometer/PS_const_field");
      DMagneticFieldMapPSConst(double Bx, double By, double Bz);     
      virtual ~DMagneticFieldMapPSConst();
      
      int GetValues(string namepath, int32_t runnumber=1, string context="");
      void GetField(const DVector3 &pos,DVector3 &Bout) const;
      void GetField(double x, double y, double z, double &Bx, double &By, double &Bz, int method=0) const;
      
      void GetFieldGradient(double x, double y, double z,
                  double &dBxdx, double &dBxdy,
                  double &dBxdz,
                  double &dBydx, double &dBydy,
                  double &dBydz,    
                  double &dBzdx, double &dBzdy,
                  double &dBzdz) const;
      
      void GetFieldBicubic(double x,double y,double z,
                 double &Bx,double &By,double &Bz) const;
      void GetFieldAndGradient(double x,double y,double z,
                double &Bx,double &By,
                double &Bz,
                double &dBxdx, double &dBxdy,
                double &dBxdz,
                double &dBydx, double &dBydy,
                double &dBydz,
                double &dBzdx, double &dBzdy,
                double &dBzdz) const;

   protected:
      
      JCalibration *jcalib;
      double Bx, By, Bz;

};

#endif // _DMagneticFieldMapPSConst_