sersiclens.h

/*

  This file is a part of GRALE, a library to facilitate the simulation
  and inversion of gravitational lenses.

  Copyright (C) 2008-2012 Jori Liesenborgs

  Contact: jori.liesenborgs@gmail.com
  
  This program is free software; you can redistribute it 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 program 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 program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  
*/

#ifndef GRALE_SERSICLENS_H

#define GRALE_SERSICLENS_H

#include "graleconfig.h"
#include "symmetriclens.h"

namespace grale
{

class GRALE_IMPORTEXPORT SersicLensParams : public GravitationalLensParams
{
public:
        SersicLensParams();
        SersicLensParams(double centalDensity, double angularScale, double index);
        ~SersicLensParams();

        bool write(serut::SerializationInterface &si) const;
        bool read(serut::SerializationInterface &si);
        GravitationalLensParams *createCopy() const;

        double getCentralDensity() const                                                        { return m_centralDensity; }
        double getAngularScale() const                                                          { return m_angularScale; }
        double getSersicIndex() const                                                           { return m_sersicIndex; }
private:
        double m_centralDensity;
        double m_angularScale;
        double m_sersicIndex;
};

class GRALE_IMPORTEXPORT SersicLens : public SymmetricLens
{
public:
        SersicLens();
        ~SersicLens();

        bool getAlphaVectorDerivatives(Vector2D<double> theta, double &axx, double &ayy, double &axy) const;
        //bool getProjectedPotential(double D_s, double D_ds, Vector2D<double> theta, double *pPotentialValue) const;
        double getMassInside(double thetaLength) const;
        double getProfileSurfaceMassDensity(double thetaLength) const;
private:
        bool processParameters(const GravitationalLensParams *pLensParams);
        static double Goverx2(double x, double n);
        
        double m_angularScale;
        double m_densityScale;
        double m_index;
        double m_massScale;
};

} // end namespace

#endif // GRALE_SERSICLENS_H