/** CbmLitField.h
 * @author Andrey Lebedev <andrey.lebedev@gsi.de>
 * @since 2009
 * @version 1.0
 **
 ** Interface for accessing the magnetic field.
 **/
#ifndef CBMLITFIELD_H_
#define CBMLITFIELD_H_

#include "base/CbmLitTypes.h"

class CbmLitField
{
public:
   /* Constructor */
   CbmLitField() {};

   /* Destructor */
   virtual ~CbmLitField() {};

   /* Returns field value at (x,y,z) position
    * @param x X coordinate [cm].
    * @param y Y coordinate [cm].
    * @param z Z coordinate [cm].
    * @param Bx Output Bx field value [kGauss].
    * @param By Output By field value [kGauss]
    * @param Bz Output Bz field value [kGauss]
    */
   virtual void GetFieldValue(
      myf x, myf y, myf z,
      myf& Bx, myf& By, myf& Bz) const = 0;

   /* @return std::string representation of this class */
   virtual std::string ToString() const {
      return "CbmLitField::ToString";
   }
};

#endif /* CBMLITFIELD_H_ */