keplerian_element_propagator.hpp

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#ifndef PERIAPSIS_SPACE_KEPLERIAN_ELEMENT_PROPAGATOR_H
#define PERIAPSIS_SPACE_KEPLERIAN_ELEMENT_PROPAGATOR_H

//
// $Id: keplerian_element_propagator.hpp 2 2008-03-01 20:58:50Z kulibali $
//
// Copyright (c) 2008, The Periapsis Project. All rights reserved. 
// 
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// modification, are permitted provided that the following conditions are 
// met: 
// 
// * Redistributions of source code must retain the above copyright notice, 
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// * Redistributions in binary form must reproduce the above copyright 
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//

#include "space/space.hpp"
#include "space/propagator.hpp"

namespace periapsis
{

    namespace space
    {

        /// Propagates using 6 Keplerian elements and rates:
        ///
        ///   - a : semi-major axis (au, au/century)
        ///   - e : eccentricity (radians, radians/century)
        ///   - I : inclination (degrees, degrees/century)
        ///   - L : mean longitude (degrees, degrees/century)
        ///   - W : longitude of perihelion (degrees, degrees/century)
        ///   - O : longitude of the ascending node (degrees, degrees/century)
        ///
        /// In order to work correctly, the parent node's scale must be set to AU.

        class SPACE_API keplerian_element_propagator
            : public propagator
        {
            double elements[6];
            double rates[6];
            double aux[4];
            bool has_data, has_aux;

        public:
            keplerian_element_propagator(const gsgl::data::config_record & obj_config);
            virtual ~keplerian_element_propagator();

            virtual void update(const double jdn, gsgl::math::vector & position, gsgl::math::vector & velocity);

            BROKER_DECLARE_CREATOR(periapsis::space::keplerian_element_propagator);

        private:
            bool get_array(const gsgl::string & str, double *a, const int num);
        }; // class keplerian_element_propagator

    } // namespace space

} // namespace periapsis

#endif

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