New textured moon and rewritten/restructured Astro code contributed by Durk

Talsma.
2009-09-15 18:31:31 +02:00
parent 38631c9eb3
commit 001a2c89e7
33 changed files with 2142 additions and 1524 deletions
@@ -0,0 +1,56 @@
+/**************************************************************************
+ * mercury.cxx
+ * Written by Durk Talsma. Originally started October 1997, for distribution  
+ * with the FlightGear project. Version 2 was written in August and 
+ * September 1998. This code is based upon algorithms and data kindly 
+ * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+#include "mercury.hxx"
+
+/*************************************************************************
+ * Mercury::Mercury(fgTIME *t)
+ * Public constructor for class Mercury
+ * Argument: The current time.
+ * the hard coded orbital elements for Mercury are passed to 
+ * CelestialBody::CelestialBody();
+ ************************************************************************/
+Mercury::Mercury(fgTIME *t) :
+  CelestialBody (48.33130,   3.2458700E-5,
+                  7.0047,    5.00E-8,
+                  29.12410,  1.0144400E-5,
+                  0.3870980, 0.000000,
+                  0.205635,  5.59E-10,
+                  168.6562,  4.09233443680, t)
+{
+}
+/*************************************************************************
+ * void Mercury::updatePosition(fgTIME *t, Star *ourSun)
+ * 
+ * calculates the current position of Mercury, by calling the base class,
+ * CelestialBody::updatePosition(); The current magnitude is calculated using 
+ * a Mercury specific equation
+ *************************************************************************/
+void Mercury::updatePosition(fgTIME *t, Star *ourSun)
+{
+  CelestialBody::updatePosition(t, ourSun);
+  magnitude = -0.36 + 5*log10( r*R ) + 0.027 * FV + 2.2E-13 * pow(FV, 6); 
+}
+
+