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Alasdair Campbell's ILS patch allowing us to fly both ILS approaches if both

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ends of the same runway share the same frequency.  This is probably the best
we can do until we impliment some sort of operator interface to manually set
which end is active (like is done in real life.)
This commit is contained in:
curt 2001-10-30 17:45:11 +00:00
parent dff16b3f8d
commit fe22475260
1 changed files with 21 additions and 2 deletions
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23
src/Navaids/ilslist.cxx
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@ -162,8 +162,27 @@ bool FGILSList::query( double lon, double lat, double elev, double freq,
// reduced signal strength
if ( d < (2* FG_ILS_DEFAULT_RANGE * SG_NM_TO_METER
* 2 * FG_ILS_DEFAULT_RANGE * SG_NM_TO_METER) ) {
*ils = *current;
return true;
// Get our bearing from this station.
double reciprocal_bearing, dummy;
double a_lat_deg = lat * SGD_RADIANS_TO_DEGREES;
double a_lon_deg = lon * SGD_RADIANS_TO_DEGREES;
// Locator beam direction
double s_ils_deg = current->get_locheading() - 180.0;
if ( s_ils_deg < 0.0 ) { s_ils_deg += 360.0; }
double angle_to_beam_deg;
// printf("**ALI geting geo_inverse_wgs_84 with elev = %.2f, a.lat = %.2f, a.lon = %.2f,
// s.lat = %.2f, s.lon = %.2f\n", elev,a_lat_deg,a_lon_deg,current->get_loclat(),current->get_loclon());
geo_inverse_wgs_84( elev, current->get_loclat(),
current->get_loclon(), a_lat_deg, a_lon_deg,
&reciprocal_bearing, &dummy, &dummy );
angle_to_beam_deg = fabs(reciprocal_bearing - s_ils_deg);
if ( angle_to_beam_deg < 90.0 ) {
*ils = *current;
return true;
}
}
}