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Sun position now *really* works (I think) ... I still have sun time warping

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code in place, probably should remove it soon.
This commit is contained in:
curt 1997-08-06 21:08:32 +00:00
parent bdb9603379
commit e21a782a51
1 changed files with 17 additions and 13 deletions
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30
Main/GLUTmain.c
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@ -270,19 +270,19 @@ void fgUpdateTimeDepCalcs(int multi_loop) {
fgFlightModelUpdate(FG_LARCSIM, f, multi_loop);
/* refresh sun position */
time_warp += 600;
time_warp += 1200;
fgSunPosition(time(NULL) + time_warp, &sun_lon, &sun_gd_lat);
fgGeodToGeoc(sun_gd_lat, 0, &sl_radius, &sun_gc_lat);
fgGeodToGeoc(sun_gd_lat, 20000.0, &sl_radius, &sun_gc_lat);
sunpos = fgPolarToCart(sun_lon, sun_gc_lat, sl_radius);
printf("Sun position is (%.2f, %.2f, %.2f)\n",
sunpos.x, sunpos.y, sunpos.z);
/* not necessary to divide, but I'm just doing it by a "random"
* constant to get near the magnitude of the number down to the
* 0.0 - 1.0 range */
sun_vec[0] = -sunpos.x;
sun_vec[1] = -sunpos.y;
sun_vec[2] = -sunpos.z;
sun_vec[3] = 0.0; /* make this a directional light source only */
printf("Time warp = %.2f Sun position is (%.2f, %.2f, %.2f)\n",
time_warp / 3600.0, sunpos.x, sunpos.y, sunpos.z);
/* the sun position has to be translated just like everything else */
sun_vec[0] = sunpos.x - scenery.center.x;
sun_vec[1] = sunpos.y - scenery.center.y;
sun_vec[2] = sunpos.z - scenery.center.z;
/* make this a directional light source only */
sun_vec[3] = 0.0;
/* update the view angle */
for ( i = 0; i < multi_loop; i++ ) {
@ -645,9 +645,13 @@ int main( int argc, char *argv[] ) {
/* $Log$
/* Revision 1.4 1997/08/06 15:41:26 curt
/* Working on correct sun position.
/* Revision 1.5 1997/08/06 21:08:32 curt
/* Sun position now *really* works (I think) ... I still have sun time warping
/* code in place, probably should remove it soon.
/*
* Revision 1.4 1997/08/06 15:41:26 curt
* Working on correct sun position.
*
* Revision 1.3 1997/08/06 00:24:22 curt
* Working on correct real time sun lighting.
*