axisymmetricvectorfield.hpp

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/* Copyright (c) 2012,2014 Taneli Kalvas. All rights reserved.
 *
 * You can redistribute this software and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option)
 * any later version.
 * 
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this library (file "COPYING" included in the package);
 * if not, write to the Free Software Foundation, Inc., 51 Franklin
 * Street, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 * If you have questions about your rights to use or distribute this
 * software, please contact Berkeley Lab's Technology Transfer
 * Department at TTD@lbl.gov. Other questions, comments and bug
 * reports should be sent directly to the author via email at
 * taneli.kalvas@jyu.fi.
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 * NOTICE. This software was developed under partial funding from the
 * U.S.  Department of Energy.  As such, the U.S. Government has been
 * granted for itself and others acting on its behalf a paid-up,
 * nonexclusive, irrevocable, worldwide license in the Software to
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#ifndef AXISYMMETRICVECTORFIELD_HPP
#define AXISYMMTERICVECTORFIELD_HPP 1
 
 
#include <vector>
#include <gsl/gsl_spline.h>
#include "types.hpp"
#include "vectorfield.hpp"
 
 
class AxisymmetricVectorField : public VectorField {
 
    geom_mode_e         _geom_mode;
    gsl_spline         *_spline;        
    gsl_interp_accel   *_accel;         
    double              _origo;
    double              _h;
    std::vector<double> _Bz;
    uint32_t            _order;
 
    void get_fdm_derivatives( double Bder[6], double z ) const;
 
    const Vec3D eval_spline( double z, double r ) const;
    const Vec3D eval_fdm( double z, double r ) const;
 
public:
 
    AxisymmetricVectorField( geom_mode_e geom_mode, 
                             const std::vector<double> &z, 
                             const std::vector<double> &Bz );
 
    AxisymmetricVectorField( geom_mode_e geom_mode, 
                             double origo, double h,
                             const std::vector<double> &Bz,
                             uint32_t order = 6 );
 
    AxisymmetricVectorField( const AxisymmetricVectorField &f );
 
    virtual ~AxisymmetricVectorField();
 
    virtual const Vec3D operator()( const Vec3D &x ) const;
 
    AxisymmetricVectorField &operator=( const AxisymmetricVectorField &f );
};
 
 
#endif