1 // tmp.cxx -- stuff I don't know what to do with at the moment
3 // Written by Curtis Olson, started July 2000.
5 // Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
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., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <simgear/magvar/magvar.hxx>
29 #include <simgear/timing/fg_time.hxx>
31 #include <FDM/flight.hxx>
32 #include <Main/options.hxx>
35 #include "moonpos.hxx"
40 FGMagVar::FGMagVar() {
43 FGMagVar::~FGMagVar() {
47 void FGMagVar::update( double lon, double lat, double alt_m, double jd ) {
48 // Calculate local magnetic variation
50 // cout << "alt_m = " << alt_m << endl;
51 magvar = SGMagVar( lat, lon, alt_m / 1000.0, (long)jd, field );
52 magdip = atan(field[5]/sqrt(field[3]*field[3]+field[4]*field[4]));
58 // periodic time updater wrapper
59 void fgUpdateLocalTime() {
61 FGTime::cur_time_params->updateLocal( cur_fdm_state->get_Longitude(),
62 cur_fdm_state->get_Latitude(),
63 current_options.get_fg_root() );
67 // update sky and lighting parameters
68 void fgUpdateSkyAndLightingParams() {
71 cur_light_params.Update();