cassini_1.cpp

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 *   Copyright (C) 2004-2015 The PaGMO development team,                     *
 *   Advanced Concepts Team (ACT), European Space Agency (ESA)               *
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#include <string>

#include "cassini_1.h"
#include "../exceptions.h"
#include "../AstroToolbox/mga.h"

namespace pagmo { namespace problem {


cassini_1::cassini_1(unsigned int objectives):base(6,0,objectives),Delta_V(6),rp(4),t(6)
{
        if (objectives != 1 && objectives !=2) {
                pagmo_throw(value_error,"Cassini_1 problem has either one or two objectives");
        }
        // Set bounds.
        const double lb[6] = {-1000,  30, 100, 30 , 400 , 1000};
        const double ub[6] = {0    , 400, 470, 400, 2000, 6000};
        set_bounds(lb,lb+6,ub,ub+6);

        // Set the mgaproblem data
        problem.type = total_DV_orbit_insertion; //Optimization type

        int sequence_[6] = {3,2,2,3,5,6}; //Sequence of planets
        problem.sequence.insert(problem.sequence.begin(), sequence_, sequence_+6);

        const int rev_[6] = {0,0,0,0,0,0}; //Sequence of clockwise legs
        problem.rev_flag.insert(problem.rev_flag.begin(), rev_, rev_+6);

        problem.e  = 0.98;      // Insertion orbit eccentricity
        problem.rp = 108950;    // Insertion orbit pericenter
        problem.DVlaunch = 0;   // Launcher DV
}

base_ptr cassini_1::clone() const
{
        return base_ptr(new cassini_1(*this));
}

void cassini_1::objfun_impl(fitness_vector &f, const decision_vector &x) const
{
        MGA(x,problem,rp,Delta_V,f[0]);
        if (get_f_dimension() == 2) {
                f[1] = (x[2]+x[3]+x[4]+x[5]); // + std::max(0.0,f[0] - 20) * 365.25;
        }       
        }

std::string cassini_1::get_name() const
{
        return "Cassini 1";
}

}}

BOOST_CLASS_EXPORT_IMPLEMENT(pagmo::problem::cassini_1)