ZoneOrientation.h

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#ifndef __ZONE_ORIENTATION_H
#define __ZONE_ORIENTATION_H

#include "../Core/SharedLibraryExportMacros.h"
#include "DissipationQuantities.h"
#include "../Core/Common.h"
#include "../Core/IncludeEigen.h"

namespace Evolve {

    class LIB_PUBLIC ZoneOrientation {
    private:

        double
            __inclination,

            __inclination_rate,

            __periapsis,

            __periapsis_rate;
    public:
        ZoneOrientation(double inclination = Core::NaN,
                        double periapsis = Core::NaN) :
            __inclination(inclination),
            __periapsis(periapsis)
        {}

        void configure(double inclination, double periapsis)
        {__inclination = inclination; __periapsis = periapsis;}

        void set_evolution_rates(double inclination, double periapsis)
        {__inclination_rate = inclination; __periapsis_rate = periapsis;}

        double inclination(bool evolution_rate=false) const {
            return (evolution_rate ? __inclination_rate: __inclination);
        }

        double periapsis(bool evolution_rate=false) const {
            return (evolution_rate ? __periapsis_rate : __periapsis);
        }

    }; //End ZoneOrientation class.

    LIB_PUBLIC Eigen::Vector3d zone_to_zone_transform(
            const ZoneOrientation &from_zone,

            const ZoneOrientation &to_zone,

            const Eigen::Vector3d &vector,

            Dissipation::QuantityEntry deriv=Dissipation::NO_DERIV,

            bool with_respect_to_from=false
    );

    /*
    void transform_zone_orientation(
            const ZoneOrientation &zone,

            const ZoneOrientation &reference,

            double &inclination,

            double &periapsis
    );*/

}//End Evolve namespace.

#endif