gausslens.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_GAUSSLENS_H

#define GRALE_GAUSSLENS_H

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

namespace grale
{

class GRALE_IMPORTEXPORT GaussLensParams : public GravitationalLensParams
{
public:
        GaussLensParams()                                                                       { m_mass = 0; m_angularWidth = 0; }
        
        GaussLensParams(double mass, double angularWidth)                                       { m_mass = mass; m_angularWidth = angularWidth; }

        double getMass() const                                                                  { return m_mass; }

        double getAngularWidth() const                                                          { return m_angularWidth; }

        GravitationalLensParams *createCopy() const;
        bool write(serut::SerializationInterface &si) const;
        bool read(serut::SerializationInterface &si);
private:
        double m_mass, m_angularWidth;
};

class GRALE_IMPORTEXPORT GaussLens : public SymmetricLens
{
public:
        GaussLens();
        ~GaussLens();
protected:
        bool processParameters(const GravitationalLensParams *pParams);
        double getMassInside(double thetaLength) const;
        double getProfileSurfaceMassDensity(double thetaLength) const;
private:
        double mass,angularwidth,angularwidth2;
};

} // end namespace

#endif // GRALE_GAUSSLENS_H