cosmology.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_COSMOLOGY_H

#define GRALE_COSMOLOGY_H

#include "graleconfig.h"
#include <errut/errorbase.h>

namespace grale
{

class GRALE_IMPORTEXPORT Cosmology : public errut::ErrorBase
{
public:
        Cosmology(double h = 0.71, double Wm = 0.27, double Wr = 0, double Wv = 0.73, double w = -1.0);
        ~Cosmology();

        void setH(double h)                                                             { m_h = h; }

        void setMatter(double Wm)                                                       { m_Wm = Wm; }

        void setRadiation(double Wr)                                                    { m_Wr = Wr; }

        void setVacuum(double Wv)                                                       { m_Wv = Wv; }

        void setVacuumEOSParameter(double w)                                            { m_w = w; }

        double getH() const                                                             { return m_h; }
        double getMatter() const                                                        { return m_Wm; }
        double getRadiation() const                                                     { return m_Wr; }
        double getVacuum() const                                                        { return m_Wv; }
        double getVacuumEOSParameter() const                                            { return m_w; }

        double getAngularDiameterDistance(double z1, double z2, int integrationSteps = 1000) const;
        
        double getAngularDiameterDistance(double z, int integrationSteps = 1000) const  { return getAngularDiameterDistance(0, z, integrationSteps); }
private:
        double m_h;
        double m_Wm, m_Wr, m_Wv;
        double m_w;
};
        
} // end namespace

#endif // GRALE_COSMOLOGY_H