> 1.)I want to visualize the flight path of an Airplane in Flightgear.
> This is possible with the A-10, that is in the 0.98a-package.
>
> But this flight path marker only works, if I use the "internal"
> Flightgear flightmodel.
> If I drive flightgear from outside (using fdm=external), this flight
> path marker does not work, it's just not there.
The flight path markers use the AI subsystem. The AI manager ( see
source/src/AIModel/AIManager.cxx ) keeps track of the "user" position,
orientation and speed using these properties:
user_latitude_node = fgGetNode("/position/latitude-deg", true);
user_longitude_node = fgGetNode("/position/longitude-deg", true);
user_altitude_node = fgGetNode("/position/altitude-ft", true);
user_heading_node = fgGetNode("/orientation/heading-deg", true);
user_pitch_node = fgGetNode("/orientation/pitch-deg", true);
user_yaw_node = fgGetNode("/orientation/side-slip-deg", true);
user_speed_node = fgGetNode("/velocities/uBody-fps", true);
If your external FDM writes to these properties then the AI manager will know
where the "user" is.
Dave
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