For those that want to fly under the bridges
/// scenery.cxx
int FGTileMgr::updateCurrentElevAtPos(sgdVec3 abs_pos_vector, Point3D center) {
sgdVec3 sc;
sgdSetVec3( sc, center[0], center[1], center[2]);
// overridden with actual values if a terrain intersection is
// found
double hit_elev = -9999.0;
double hit_radius = 0.0;
sgdVec3 hit_normal = { 0.0, 0.0, 0.0 };
bool hit = false;
if ( fabs(sc[0]) > 1.0 || fabs(sc[1]) > 1.0 || fabs(sc[2]) > 1.0 ) {
// scenery center has been properly defined so any hit should
// be valid (and not just luck)
hit = fgCurrentElev(abs_pos_vector,
sc,
// uncomment next paramater to fly under
// bridges and a slightly faster algorithm
// but you won't be able to land on aircraft carriers
current_tile->get_terra_transform(),
&hit_list,
&hit_elev,
&hit_radius,
hit_normal);
}
if ( hit ) {
// cout << "elev = " << hit_elev << " " << hit_radius << endl;
globals->get_scenery()->set_cur_elev( hit_elev );
globals->get_scenery()->set_cur_radius( hit_radius );
globals->get_scenery()->set_cur_normal( hit_normal );
} else {
globals->get_scenery()->set_cur_elev( -9999.0 );
globals->get_scenery()->set_cur_radius( 0.0 );
globals->get_scenery()->set_cur_normal( hit_normal );
}
return hit;
}
_______________________________________________
Flightgear-devel mailing list
[EMAIL PROTECTED]
http://mail.flightgear.org/mailman/listinfo/flightgear-devel
