Re: RFC: Taxiway/Apron heuristics

On Mon, 5 Apr 2004, David Luff wrote:

> I think I see the problem - each time an airport is generated it adds a
> hole polyon to the appropriate file, so if all airports followed by a
> subset of airports are generated the hole will be generated twice, and
> may be different if the airport has changed?

Correct.

> If my understanding of that is correct, then as far as I can tell it
> would be a reasonably simple matter to test for the hole polygon
> overlapping with an existing hole polygon, and removing the first one if
> so.  This would assume that no two airport's perimeters overlap.  This
> assumption could be tested by generating the entire default airport set
> with a big warning emitted if a hole was removed for this reason.

That's certainly easier than trying to work out by hand which poly to
remove.

> I suppose I should add an X-Plane format export to TaxiDraw.  Do we
> loose any data in this case, or is it simply a different format of the
> same data?

I thought we *were* using X-Plane format....

-- 
Jon Stockill
[email protected]