planet_system.cpp

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//
// $Id: planet_system.cpp 2 2008-03-01 20:58:50Z kulibali $
//
// Copyright (c) 2008, The Periapsis Project. All rights reserved. 
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#include "space/planet_system.hpp"
#include "space/astronomy.hpp"

#include "math/math.hpp"
#include "math/units.hpp"
#include "platform/color.hpp"
#include "platform/lowlevel.hpp"

using namespace gsgl;
using namespace gsgl::data;
using namespace gsgl::math;
using namespace gsgl::scenegraph;
using namespace gsgl::physics;

namespace periapsis
{

    namespace space
    {

        BROKER_DEFINE_CREATOR(periapsis::space::planet_system);

        static config_variable<gsgl::platform::color> PLANET_COORD_COLOR(L"space/planet_system/planet_coord_color", gsgl::platform::color(0.0f, 0.0f, 1.0f, 0.5f));


        planet_system::planet_system(const config_record & conf)
            : orbital_frame(conf), cs(0)
        {
            get_draw_flags() |= node::NODE_NO_FRUSTUM_CHECK;
            cs = new utils::coord_system(this, 10000*units::METERS_PER_AU, 15, PLANET_COORD_COLOR);
        } // planet_system::planet_system()


        planet_system::~planet_system()
        {
            delete cs;
        } // planet_system::~planet_system()


        gsgl::real_t planet_system::get_priority(gsgl::scenegraph::context *)
        {
            if (get_name() == L"Earth Barysystem")
            {
                return utils::pos_in_eye_space(this).mag2() * 10;
            }
            else
            {
                return NODE_DRAW_IGNORE;
            }
        } // planet_system::get_priority()

        


        void planet_system::draw(gsgl::scenegraph::context *c)
        {
            if ((c->render_flags & context::RENDER_COORD_SYSTEMS) && get_name() == L"Earth Barysystem")
            {
                // the earth barysystem is still oriented to the ecliptic; we want to display the equatorial, but not move...
                glMultMatrixf(EQUATORIAL_WRT_ECLIPTIC.ptr());                                                       CHECK_GL_ERRORS();
                cs->draw(c);
            }
        } // planet_system::draw()


    } // namespace space

} // namespace periapsis

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