EllipsoidModel.hpp

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#pragma ident "$Id: EllipsoidModel.hpp 3140 2012-06-18 15:03:02Z susancummins $"



#ifndef GPSTK_ELLIPSOIDMODEL_HPP
#define GPSTK_ELLIPSOIDMODEL_HPP

//============================================================================
//
//  This file is part of GPSTk, the GPS Toolkit.
//
//  The GPSTk is free software; you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published
//  by the Free Software Foundation; either version 2.1 of the License, or
//  any later version.
//
//  The GPSTk 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 Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with GPSTk; if not, write to the Free Software Foundation,
//  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
//  
//  Copyright 2004, The University of Texas at Austin
//
//============================================================================

//============================================================================
//
//This software developed by Applied Research Laboratories at the University of
//Texas at Austin, under contract to an agency or agencies within the U.S. 
//Department of Defense. The U.S. Government retains all rights to use,
//duplicate, distribute, disclose, or release this software. 
//
//Pursuant to DoD Directive 523024 
//
// DISTRIBUTION STATEMENT A: This software has been approved for public 
//                           release, distribution is unlimited.
//
//=============================================================================



namespace gpstk
{

   class EllipsoidModel
   {
   public:
      virtual double a() const throw() = 0;

      virtual double a_km() const throw() = 0;

      virtual double flattening() const throw() = 0;

      virtual double eccentricity() const throw() = 0;

      virtual double eccSquared() const throw()
      { return eccentricity() * eccentricity(); }

      virtual double angVelocity() const throw() = 0;

      virtual double gm() const throw() = 0;

      virtual double gm_km() const throw() = 0;

      virtual double c() const throw() = 0;

      virtual double c_km() const throw() = 0;

      virtual ~EllipsoidModel() throw() {};

   }; // class EllipsoidModel


} // namespace

#endif

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