153 lines
4.0 KiB
C
153 lines
4.0 KiB
C
/**************************************************************************
|
|
* astro.c
|
|
*
|
|
* Written by Durk Talsma. Started November 1997, for use with the flight
|
|
* gear project.
|
|
*
|
|
* 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 <math.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
|
|
#include <GL/glut.h>
|
|
#include "../XGL/xgl.h"
|
|
|
|
#include "astro.h"
|
|
#include "moon.h"
|
|
#include "orbits.h"
|
|
#include "planets.h"
|
|
#include "stars.h"
|
|
#include "sun.h"
|
|
|
|
#include "../Include/constants.h"
|
|
#include "../Include/general.h"
|
|
|
|
#include "../Main/views.h"
|
|
#include "../Aircraft/aircraft.h"
|
|
#include "../Time/fg_time.h"
|
|
|
|
static double prevUpdate = 0;
|
|
|
|
|
|
/* Initialize Astronomical Objects */
|
|
void fgAstroInit() {
|
|
struct fgTIME *t;
|
|
t = &cur_time_params;
|
|
|
|
/* Initialize the orbital elements of sun, moon and mayor planets */
|
|
fgSolarSystemInit(*t);
|
|
|
|
/* Initialize the Stars subsystem */
|
|
fgStarsInit();
|
|
|
|
/* Initialize the sun's position */
|
|
fgSunInit();
|
|
|
|
/* Intialize the moon's position */
|
|
fgMoonInit();
|
|
}
|
|
|
|
|
|
/* Render Astronomical Objects */
|
|
void fgAstroRender() {
|
|
struct fgFLIGHT *f;
|
|
struct fgLIGHT *l;
|
|
struct fgVIEW *v;
|
|
struct fgTIME *t;
|
|
double angle;
|
|
|
|
f = ¤t_aircraft.flight;
|
|
l = &cur_light_params;
|
|
t = &cur_time_params;
|
|
v = ¤t_view;
|
|
|
|
/* a hack: Force sun and moon position to be updated on an hourly basis */
|
|
if (((t->gst - prevUpdate) > 1) || (t->gst < prevUpdate)) {
|
|
prevUpdate = t->gst;
|
|
fgSunInit();
|
|
fgMoonInit();
|
|
}
|
|
|
|
/* set the sun position */
|
|
/* xglLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec_inv ); */
|
|
|
|
xglPushMatrix();
|
|
|
|
/* Translate to view position */
|
|
xglTranslatef( v->view_pos.x, v->view_pos.y, v->view_pos.z );
|
|
|
|
/* Rotate based on gst (side real time) */
|
|
angle = t->gst * 15.041085; /* should be 15.041085, Curt thought it was 15*/
|
|
#ifdef DEBUG
|
|
printf("Rotating astro objects by %.2f degrees\n",angle);
|
|
#endif
|
|
xglRotatef( angle, 0.0, 0.0, -1.0 );
|
|
|
|
/* render the moon */
|
|
fgMoonRender();
|
|
|
|
/* render the stars */
|
|
fgStarsRender();
|
|
|
|
/* render the sun */
|
|
fgSunRender();
|
|
|
|
xglPopMatrix();
|
|
}
|
|
|
|
|
|
/* $Log$
|
|
/* Revision 1.10 1997/12/19 16:45:01 curt
|
|
/* Working on scene rendering order and options.
|
|
/*
|
|
* Revision 1.9 1997/12/18 23:32:35 curt
|
|
* First stab at sky dome actually starting to look reasonable. :-)
|
|
*
|
|
* Revision 1.8 1997/12/15 23:54:57 curt
|
|
* Add xgl wrappers for debugging.
|
|
* Generate terrain normals on the fly.
|
|
*
|
|
* Revision 1.7 1997/12/15 20:59:09 curt
|
|
* Misc. tweaks.
|
|
*
|
|
* Revision 1.6 1997/12/12 21:41:27 curt
|
|
* More light/material property tweaking ... still a ways off.
|
|
*
|
|
* Revision 1.5 1997/12/12 19:52:54 curt
|
|
* Working on lightling and material properties.
|
|
*
|
|
* Revision 1.4 1997/12/11 04:43:56 curt
|
|
* Fixed sun vector and lighting problems. I thing the moon is now lit
|
|
* correctly.
|
|
*
|
|
* Revision 1.3 1997/12/10 22:37:49 curt
|
|
* Prepended "fg" on the name of all global structures that didn't have it yet.
|
|
* i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
|
|
*
|
|
* Revision 1.2 1997/12/09 04:25:33 curt
|
|
* Working on adding a global lighting params structure.
|
|
*
|
|
* Revision 1.1 1997/11/25 23:20:22 curt
|
|
* Initial revision.
|
|
*
|
|
*/
|