1 /**************************************************************************
4 * Written by Durk Talsma. Started November 1997, for use with the flight
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.
22 * (Log is kept at end of this file)
23 **************************************************************************/
40 #include "../constants.h"
41 #include "../general.h"
43 #include "../Main/views.h"
44 #include "../Aircraft/aircraft.h"
45 #include "../Time/fg_time.h"
47 static double prevUpdate = 0;
50 /* Initialize Astronomical Objects */
55 /* Initialize the orbital elements of sun, moon and mayor planets */
56 fgSolarSystemInit(*t);
58 /* Intialize the moon's position */
61 /* Initialize the sun's position */
64 /* Initialize the Stars subsystem */
69 /* Render Astronomical Objects */
70 void fgAstroRender() {
76 f = ¤t_aircraft.flight;
80 /* a hack: Force sun and moon position to be updated on an hourly basis */
81 if (((t->gst - prevUpdate) > 1) || (t->gst < prevUpdate)) {
87 /* Disable fog effects */
90 /* reverse light direction so the moon is displayed properly */
91 glLightfv( GL_LIGHT0, GL_POSITION, t->sun_vec_inv );
95 /* Translate to view position */
96 glTranslatef( v->view_pos.x, v->view_pos.y, v->view_pos.z );
98 /* Rotate based on gst (side real time) */
99 angle = t->gst * 15.041085; /* should be 15.041085, Curt thought it was 15*/
101 printf("Rotating astro objects by %.2f degrees\n",angle);
103 glRotatef( angle, 0.0, 0.0, -1.0 );
105 /* render the stars */
108 /* render the moon */
116 /* reenable fog effects */
122 /* Revision 1.1 1997/11/25 23:20:22 curt