1 // ephemeris.cxx -- wrap SGEphemeris code in a subsystem
3 // Written by James Turner, started June 2010.
5 // Copyright (C) 2010 Curtis L. Olson - http://www.flightgear.org/~curt
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23 #include <Environment/ephemeris.hxx>
25 #include <simgear/timing/sg_time.hxx>
26 #include <simgear/ephemeris/ephemeris.hxx>
28 #include <Main/globals.hxx>
29 #include <Main/fg_props.hxx>
31 Ephemeris::Ephemeris() :
35 SGPath ephem_data_path(globals->get_fg_root());
36 ephem_data_path.append("Astro");
37 _impl = new SGEphemeris(ephem_data_path.c_str());
38 globals->set_ephem(_impl);
41 Ephemeris::~Ephemeris()
46 void Ephemeris::init()
48 _latProp = fgGetNode("/position/latitude-deg", true);
52 void Ephemeris::postinit()
57 static void tieStar(const char* prop, Star* s, double (Star::*getter)() const)
59 fgGetNode(prop, true)->tie(SGRawValueMethods<Star, double>(*s, getter, NULL));
62 void Ephemeris::bind()
64 tieStar("/ephemeris/sun/xs", _impl->get_sun(), &Star::getxs);
65 tieStar("/ephemeris/sun/ys", _impl->get_sun(), &Star::getys);
66 tieStar("/ephemeris/sun/ze", _impl->get_sun(), &Star::getze);
67 tieStar("/ephemeris/sun/ye", _impl->get_sun(), &Star::getye);
69 tieStar("/ephemeris/sun/lat-deg", _impl->get_sun(), &Star::getLat);
72 void Ephemeris::unbind()
76 void Ephemeris::update(double)
78 SGTime* st = globals->get_time_params();
79 _impl->update(st->getMjd(), st->getLst(), _latProp->getDoubleValue());