kepler.h

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/*
Kepler header file
-------------------
This file contains a number of utilities for calculating parameters associated
with keplerian orbits.
 
Author: Alex Reynolds
*/
#ifndef UTILS_KEPLER_H
#define UTILS_KEPLER_H
 
#include "core/CartesianVector.hpp"
#include "core/mathmacros.h"
 
namespace warptwin {
    
    int twoBodyPropagate(double time, double mu,
                         CartesianVector3 pos_initial, CartesianVector3 vel_initial,
                         CartesianVector3 &pos_final,  CartesianVector3 &vel_final);

    int mean2eccentric(double mean_anomaly, double eccentricity, double &eccentric_anomaly,
                       double tol, int max_iter);

    int eccentric2true(double eccentric_anomaly, double eccentricity, double &true_anomaly);

    int true2eccentric(double true_anomaly, double eccentricity, double &eccentric_anomaly);

    int eccentric2mean(double eccentric_anomaly, double eccentricity, double &mean_anomaly);
}
 
#endif