Re: Existing Airports: which is the way to build the *.btg file

Gerard ROBIN writes:

> Hello everybody,
>  i have just built (Linux) the last CVS Terragear with NURBS++
> I am a very beginner in using Terragear.
> 
> 
> I would like, to rebuild in the FG scenery some existing Airports  which
> are not up to date regarding the last apt.dat.
> 
> Is it anyway with Terragear functions to do it from:
> 
>  1/the existing fg-scenery ie:    2990761.btg from e002n48
>  2/the existing good apt.dat ie: LFPO
> 
> The target is to get a new LFPO.btg
> 
> 
> As far in understand i need the DEM file, i hope to be wrong.
> 
> BTW: I have found others Airports which are wrong.
> 

You can regenerate the LFPO.btg using genapts.  It might have an --airport= command line option, or you might need to otherwise specify how to just create this airport, I can't remember OTOH.

However, if you've made any changes to the airport it is not guaranteed to fit nicely in the hole cut out of the scenery tile(s) for the previous version.  So you will probably need to rebuild the affected tile(s).  This is non-trivial - I suggest you follow the tutorials on www.terragear.org first for the standard scenery and make sure you can reproduce it, before starting to build your customisations.  You'll need elevation data (SRTM preferred now), land use data (vmap0) and the airport data.  I think that's about it - I don't think the standard scenery uses the hi-res coastlines anymore.  Good luck!

Cheers - Dave

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