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Hello folks,

OK, I have been meaning to subscribe and still haven't, because I
have been keeping _SO_ busy working on getting this scenery-making
stuff to work for me.
I have probably a fair number of questions about how to fix what's
going on here, but I will start with a few, and maybe those few
will lead to the answers to some of the others. I have put off
writing this email for some time now while searching for answers,
but I must ask some stuff now, as there are too many conflicting
sources of documentation & tutorials online..

Look here to see which exact versions of tools I am using:
http://www.mail-archive.com/flightgear-
us...@lists.sourceforge.net/msg06628.html

The tools all appear to be working very nicely in and of
themselves: demchop, terrafit, genapts, shape-decode, fgfs-
construct.
Some are picky about paths, but that can be fixed at some point
hopefully (genapts in particular-- hardcoded paths are never good
;).
Each tool is working as it should, best I can tell, but the
finished product when I go for a test-flight, even though the
scenery itself is GREAT LOOKING :) there are some Picasso-like
effects to the landscape, with maybe a bit of Dali thrown in..

1) My airport is basically non-existent. Even with the default
FlightGear scenery package, I get just a couple strips of pavement
for a runway, but I am not even getting that with my scenery.
2) Bodies of water appear to be at sea-level, but the landmass is
up to 30,000 feet below sealevel in some places-- giant holes, huge
ones, with sheer cliff-like walls. The cliff-like walls do have
landscape on them, and trees, but they are ridiculously steep.
There are even some urban areas clinging to the sides of these
cliffs. Sometimes the shoreline looks normal, but it just drops off
at the edge of the landmass. I can fly down to the bottom of the
holes, and there is great scenery down there, but I am WAAAY below
sealevel.
3) some objects, like what I suspect to be my runways maybe, seem
like tall skinny 2-dimentional sticks, sticking up out of the
ground.

Here's some more specific points and questions;

1) Does the --airport=xxxx option _work_ for genapts? It doesn't
seem to. Below is the last few lines of my genapts output when
using that option:

>End of file reached
>last_apt_id.length() = 4
>Skipping airport
>[FINISHED CORRECTLY]
>Airport generating finished.

..and my AirportArea folder is there, but empty after that run.

2) The documentation for terrafit.py is sketchy, so I was looking
in the code and the homepage given in the code, but there isn't
much there..
So- How does the -f option work? It is for the scaling factor. The
authors homepage says that for 25 meter DEMs a factor of 0.04 is
good, but he doesn't explain WHY and how do determine what the
scale factor should be for other resolutions. I am using 10 meter
DEMs, so what should my factor be? I have tried 0.04, 1.0, and 0.1
but am not sure what I should be doing here.

Here's some other terrafit options:
- --minnodes 50 (so what is a 'node' and how does more or less nodes
affect the outcome?)
- --maxnodes 1000 (same question here)
- --maxerror 40 (and this one? I have seen a few errors > 40 go by on
my screen, but the program didn't stop.)

3) As mentioned earlier, genapts is tricky to use. Keep your SCROLL-
LOCK button handy as you run it so you can pause execution and look
as it searches paths. The paths in it do appear to be hardcoded.
And the --min/max lat/lon options, do they work? I read either in
the mailing list or on a tutorial (possibly a very old tutorial)
that they aren't doing anything.

4) Shape-decode questions....
4a) --max-segment: does this determine the longest length that any
straight line will be on the landscape?
4b) I copied some code out of a guys post on the forums, for shape-
decoding all the v0_shapefiles available for my area from the
FlightGear mapserver, but there are two more shapefiles that he
didn't use: I have v0_depthcontour and v0_elevcontour, which
definitely sound like they have something to do with
hills/valleys/slopes though I know there are no areas of Nova
Scotia that are 30,000 feet high :D but anyone know what sort of
shape-decode I might try on these files?
4c) can screwed-up shapefiles (or empty ones) cause holes?? Or,
where/why are holes formed initially (during demchop?) and do they
just persist from that point until the build is done?

5) Construction questions:
5a) How do the two methods (client/server vs. fgfs-construct)
compare? Is one deprecated? It seems that the most recent web
searches I have read are using the fgfs-construct method, but
what's the difference?
5b) with fgfs-construct, what are --x-dist and --y-dist used for?
The examples I read use a value of 3 so is that because the example
was using Level-3 DEMs? I have it set to 1 but tried it at 3 and
didn't notice a difference...
5c) the server/client method doesn't create any particular output
folder.. Assuming it worked, what folder would I specify to test my
scenery? The $WORK directory?


OK, well the server/client just finished so I am going to go and
see if/what I have for scenery this time :) and will check back
later/tomorrow. Thanks very much for reading, and for any feedback
anyone can provide!

Sasha




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