[Flightgear-devel] Comments on new Scenery

2004-06-06 Thread William Earnest
Hello all,
	Pulled down the local 10 degree block for a quick look, and the 
overall impression is a great improvement. Before anyone (especially 
Curt) has to order a larger hat, here are a few specific problems I 
spotted in my area (eastern PA).

	First, the majority of the taxiways are on the opposite side from 
reality. 1N9, KUKT, KSEG are fully reversed. KABE has taxi for 6-24 
correct, but the one for 13-31 is on the wrong side. This airport also 
shows a database problem, with a major highway trying to cross 13-31. 
The highway near 1N9 is also displaced by about a mile, putting it on 
the wrong side of the airport. At KLNS, the taxiways are roughly 
correct, but one runway (8-26) and its taxi is only a long white 
rectangle.

	I note a lot of windsocks by the runway ends. I assume this is a 
default when no location is available. Likewise, several beacons are 
far from their real locations, with some uncomfortably near the runways.

	Don't let these nits slow down the progress. Add them to the pile of 
items for a rainy day.

--
Bill Earnest  [EMAIL PROTECTED]  Linux Powered   Allentown, PA, USA
Computers, like air conditioners, work poorly with Windows open.
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Re: [Flightgear-devel] Comments on new Scenery

2004-06-06 Thread Curtis L. Olson
Thanks for the comments, let me respond to a few of these ...
William Earnest wrote:
Pulled down the local 10 degree block for a quick look, and the 
overall impression is a great improvement. Before anyone (especially 
Curt) has to order a larger hat, here are a few specific problems I 
spotted in my area (eastern PA).

First, the majority of the taxiways are on the opposite side from 
reality. 1N9, KUKT, KSEG are fully reversed. KABE has taxi for 6-24 
correct, but the one for 13-31 is on the wrong side.

Robin Peel has generated default taxiways for all airports that haven't 
had specific taxiways defined for them.  The default taxiways are 
intended to look plausible but have no real connection with reality.  
The fix for this is to define correct taxiways for each individual 
airport.  Lot's of tedius work which is probably why it hasn't been done 
yet for most of the smaller airports.  However, once we get a way to 
output x-plane format taxiway information, then people from the 
FlightGear project could really help Robin push his database forward.

This airport also shows a database problem, with a major highway 
trying to cross 13-31. The highway near 1N9 is also displaced by about 
a mile, putting it on the wrong side of the airport.

This is due to the very low resolution of our road data base.  This 
issue has been discussed before, but at the moment there doesn't seem to 
be any good solution short of manually repositioning the roads.  But 
before we can do that, we need some mechanism to store and coordinate 
all the fixes ... that will be some substantial effort for someone, 
unless some kind company or government releases better data for us to use.

At KLNS, the taxiways are roughly correct, but one runway (8-26) and 
its taxi is only a long white rectangle.

This is a problem with Robin's database.  For some airports he ended up 
with two airport entries with half the runways assigned to the first and 
half the runways assigned to the second.  The airport generator tools 
can't handle this and the result is some missing runways or holes.  I 
am very hopeful that these bugs will be fixed in Robin's next database 
release (which should happen in a week or two or three.)

I note a lot of windsocks by the runway ends. I assume this is a 
default when no location is available. Likewise, several beacons are 
far from their real locations, with some uncomfortably near the runways.

Yes, for all airports that don't have windsocks or beacons, Robin 
generates some default objects ... you'll probably see the pattern if 
you look at a few runways and airports.  His code doesn't account for 
runway overlaps so you get some wierdness here and there.  Again, the 
good news is that when we spot these problems and can find correct data 
for the airports we can submit it to Robin and hopefully get it fixed in 
the next release.  I trust our buddies in the X-Plane camp are seeing 
the same issues and doing the same thing to help fix up the database.

Don't let these nits slow down the progress. Add them to the pile 
of items for a rainy day.

Yup, I already have a big list of things I hope to look at for upcoming 
scenery builds.

Regards,
Curt.
--
Curtis Olsonhttp://www.flightgear.org/~curt 
HumanFIRST Program  http://www.humanfirst.umn.edu/
FlightGear Project  http://www.flightgear.org
Unique text:2f585eeea02e2c79d7b1d8c4963bae2d

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