On Sat, Nov 14, 2009 at 11:53 AM, Ron Jensen wrote:
> It would be a trivial patch to genapts to always generate leading zeros,
> however it appears that all US General Aviation airports don't use the
> leading zero, US Military bases are mixed, and Europe uses leading
> zeros. Looking thru apt.dat it appears all runway numbers have the
> leading zero so we can't use that data to algorithmically determine the
> format to use... So here's the patch to always generate leading zeros,
> but should it be applied everywhere?
>
> diff --git a/src/Airports/GenAirports/rwy_common.cxx
> b/src/Airports/GenAirports/rwy_common.cxx
> index c5aef04..17a2ff5 100644
> --- a/src/Airports/GenAirports/rwy_common.cxx
> +++ b/src/Airports/GenAirports/rwy_common.cxx
> @@ -52,7 +52,8 @@ void gen_number_block( const TGRunway& rwy_info,
> if ( num == 11 ) {
> sprintf( tex1, "11" );
> } else if ( num < 10 ) {
> - sprintf( tex1, "%dc", num );
> + sprintf( tex1, "%dl", 0 );
> + sprintf( tex2, "%dr", num );
> } else {
> sprintf( tex1, "%dl", num / 10 );
> sprintf( tex2, "%dr", num - (num / 10 * 10));
>
>
I suppose we could use some heuristic such as:
4 character airport code that do not start with "K" or "P" use a leading
zero, and all other airports omit the leading zero? We could setup the code
logic to be extensible if we find other countries that also tend to omit the
leading zero. That doesn't give us individual control over individual
runways, but it might make things generally better than they are now?
Curt.
--
Curtis Olson: http://baron.flightgear.org/~curt/
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