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 **************************************************************************/
26 # define exception c_exception
32 /*************************************************************************
33 * Mars::Mars(SGTime *t)
34 * Public constructor for class Mars
35 * Argument: The current time.
36 * the hard coded orbital elements for Mars are passed to
37 * CelestialBody::CelestialBody();
38 ************************************************************************/
39 Mars::Mars(SGTime *t) :
40 CelestialBody(49.55740, 2.1108100E-5,
42 286.5016, 2.9296100E-5,
45 18.60210, 0.52402077660, t)
49 CelestialBody(49.55740, 2.1108100E-5,
51 286.5016, 2.9296100E-5,
54 18.60210, 0.52402077660)
57 /*************************************************************************
58 * void Mars::updatePosition(SGTime *t, Star *ourSun)
60 * calculates the current position of Mars, by calling the base class,
61 * CelestialBody::updatePosition(); The current magnitude is calculated using
62 * a Mars specific equation
63 *************************************************************************/
64 void Mars::updatePosition(SGTime *t, Star *ourSun)
66 CelestialBody::updatePosition(t, ourSun);
67 magnitude = -1.51 + 5*log10( r*R ) + 0.016 * FV;