1 /**************************************************************************
3 * Written by Durk Talsma. Originally started October 1997, for distribution
4 * with the FlightGear project. Version 2 was written in August and
5 * September 1998. This code is based upon algorithms and data kindly
6 * provided by Mr. Paul Schlyter. (pausch@saaf.se).
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * (Log is kept at end of this file)
24 **************************************************************************/
27 # define exception c_exception
33 /*************************************************************************
34 * Mars::Mars(fgTIME *t)
35 * Public constructor for class Mars
36 * Argument: The current time.
37 * the hard coded orbital elements for Mars are passed to
38 * CelestialBody::CelestialBody();
39 ************************************************************************/
40 Mars::Mars(fgTIME *t) :
41 CelestialBody(49.55740, 2.1108100E-5,
43 286.5016, 2.9296100E-5,
46 18.60210, 0.52402077660, t)
49 /*************************************************************************
50 * void Mars::updatePosition(fgTIME *t, Star *ourSun)
52 * calculates the current position of Mars, by calling the base class,
53 * CelestialBody::updatePosition(); The current magnitude is calculated using
54 * a Mars specific equation
55 *************************************************************************/
56 void Mars::updatePosition(fgTIME *t, Star *ourSun)
58 CelestialBody::updatePosition(t, ourSun);
59 magnitude = -1.51 + 5*log10( r*R ) + 0.016 * FV;