Hi Petr,
Here's a little snippet of some perl code I use to do this sort of thing
(it's from the backend of some perl-tk gui code, and unfortunately I can't
share the whole thing since I developed it for a proprietary project):
$HASH{ "/sim/presets/airport-id" } = $aptid;
$HASH{ "/sim/presets/runway" } = $rwyno;
$HASH{ "/sim/presets/vor-id" } = $vor_id;
$HASH{ "/sim/presets/vor-freq" } = $vor_freq;
$HASH{ "/sim/presets/ndb-id" } = $ndb_id;
$HASH{ "/sim/presets/ndb-freq" } = $ndb_freq;
$HASH{ "/sim/presets/fix" } = $fix;
$HASH{ "/sim/presets/longitude-deg" } = "-9999.0";
$HASH{ "/sim/presets/latitude-deg" } = "-9999.0";
$HASH{ "/sim/presets/offset-distance-nm" } = $dist;
$HASH{ "/sim/presets/offset-azimuth" } = $bearing;
$HASH{ "/sim/presets/heading-deg" } = $heading;
$HASH{ "/sim/presets/altitude-ft" } = $tmpalt;
$HASH{ "/sim/presets/glideslope-deg" } = $gs;
$HASH{ "/sim/presets/airspeed-kt" } = $airspeed;
There's a little loop that dumps all these things to FlightGear via the
"telnet" property interface, and the finishes by calling:
run presets-commit
It is probably helpful to review the presets code that sorts out all the
different preset options depending on the values in this tree. That will
give you an idea of what values you should leave empty, and what values to
set to -9999.0 (for example) in order to effect the right startup mode.
(The logic is a bit complex, so have patience when you work your way
through that code.)
Note, it appears (as best as I can see) that in air startups are broke and
probably haven't worked for a while with JSBSim and YASim. They do however
continue to work fine with an external proprietary fdm I've been using for
another project.
Regards,
Curt.
On Sat, Jan 23, 2010 at 4:40 PM, ing. Petr Ondra wrote:
> Hi,
> Please how can I set corretly position (on ground/in air) via property
> tree? (lat,lon,alt ....)
>
> THX
>
> mamucz
>
>
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--
Curtis Olson: http://baron.flightgear.org/~curt/
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