On 11 Apr 2012, at 20:48, [email protected] wrote: > pos = SGGeod::fromDeg(lonn->getDoubleValue(), latn->getDoubleValue()); > apt = FGAirport::findClosest(pos, maxRange, &filter); > string id = apt->ident(); > > The above results in id being the single nearest ICAO. Throw this in a loop > and iterate the pos lonn/lat the amount of the loop iterator, put the results > in an array, then choose a random ICAO from the array using rand(). Then you > have a list of ICAOs N, S, E, and W from your current location. The longer > the loop or the greater the iterator, the further away the ICAOs go. For > example:
Uh, the findClosest (and related FGPositioned functions) use the spatial index, which is probably not what you want - since they're a bit slower. What exactly *do* you want? The current query functions support querying by position or by ident (possibly a partial ident). If you're looking for a flat list of all the airport IDs, that may not actually be exposed right now in C++, but would be trivial to add. James ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
