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Use wgs_84 time and distance calc routines instead of pure spherical geometry.

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curt 1999-10-14 19:32:15 +00:00
parent 229ba460d8
commit b822efcf78
1 changed files with 12 additions and 6 deletions
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18
src/FDM/MagicCarpet.cxx
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@ -61,11 +61,18 @@ int FGMagicCarpet::update( int multiloop ) {
set_Euler_Angles( get_Phi(), get_Theta(), fmod(get_Psi() + turn, FG_2PI) );
// update (lon/lat) position
Point3D start( get_Longitude(), get_Latitude(), 0.0 );
Point3D end = calc_lon_lat( start, -get_Psi(), dist );
double lat2, lon2, az2;
geo_direct_wgs_84 ( get_Altitude(),
get_Latitude() * RAD_TO_DEG,
get_Longitude() * RAD_TO_DEG,
get_Psi() * RAD_TO_DEG,
dist, &lat2, &lon2, &az2 );
set_Longitude( lon2 * DEG_TO_RAD );
set_Latitude( lat2 * DEG_TO_RAD );
set_Longitude( end.x() );
set_Latitude( end.y() );
// cout << "lon error = " << fabs(end.x()*RAD_TO_DEG - lon2)
// << " lat error = " << fabs(end.y()*RAD_TO_DEG - lat2)
// << endl;
double sl_radius, lat_geoc;
fgGeodToGeoc( get_Latitude(), get_Altitude(), &sl_radius, &lat_geoc );
@ -77,8 +84,7 @@ int FGMagicCarpet::update( int multiloop ) {
set_Geocentric_Position( lat_geoc, get_Longitude(),
sl_radius + get_Altitude() + climb );
set_Geodetic_Position( end.y(), end.x(),
get_Altitude() + climb );
set_Altitude( get_Altitude() + climb );
return 1;
}