sislens.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_SISLENS_H

#define GRALE_SISLENS_H

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

namespace grale
{

class GRALE_IMPORTEXPORT SISLensParams : public GravitationalLensParams
{
public:
        SISLensParams()                                                         { dispersion = 0; }
        
        SISLensParams(double velocityDispersion)                                { SISLensParams::dispersion = velocityDispersion; }

        double getVelocityDispersion() const                                    { return dispersion; }

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

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

        bool getProjectedPotential(double D_s, double D_ds, Vector2D<double> theta, 
                                   double *pPotentialValue) const;

        bool getSuggestedScales(double *pDeflectionScale, double *pPotentialScale) const;
        bool getCLParameterCounts(int *pNumIntParams, int *pNumFloatParams) const;
        bool getCLParameters(double deflectionScale, double potentialScale, int *pIntParams, float *pFloatParams) const;
        std::string getCLProgram(std::string &subRoutineName) const;
        int getCLSubLenses() const                                                      { return 1; }
protected:
        bool processParameters(const GravitationalLensParams *pLensParams);
        double getMassInside(double thetaLength) const;
        double getProfileSurfaceMassDensity(double thetaLength) const;
private:
        double m_massFactor, m_densFactor;
        double m_einstRad;
};

} // end namespace

#endif // GRALE_SISLENS_H