pointmasslens.h

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/*

  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_POINTMASSLENS_H

#define GRALE_POINTMASSLENS_H

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

namespace grale
{

class GRALE_IMPORTEXPORT PointmassLensParams : public GravitationalLensParams
{
public:
        PointmassLensParams()                                                           { lensmass = 0; }

        PointmassLensParams(double mass)                                                { lensmass = mass; }

        double getLensMass() const                                                      { return lensmass; }
        
        GravitationalLensParams *createCopy() const;
        bool write(serut::SerializationInterface &si) const;
        bool read(serut::SerializationInterface &si);
private:
        double lensmass;
};

class GRALE_IMPORTEXPORT PointmassLens : public SymmetricLens
{
public:
        PointmassLens();
        ~PointmassLens();
protected:
        bool processParameters(const GravitationalLensParams *pLensParams);
        double getMassInside(double thetaLength) const;
        double getProfileSurfaceMassDensity(double thetaLength) const;
private:
        double mass;
};                    

} // end namespace

#endif // GRALE_POINTMASSLENS_H