I just discovered that our property "metrics/eyepoint-x-ft" shows that it is expected to be in units of feet. However, it is specified in inches in our config file (in structural frame), and the property is bound to the GetXYZep() function, which reports the eyepoint in the same way it is specified: units of inches, in structural frame. I suppose this ought to be changed.
I'm not sure that this matters much for FlightGear -- our system allows the viewpoint to be placed in any arbitrary location relative to the 3D model, so it wouldn't be useful to take the information from the aero config file. In fact, I'd like to generalize the system a bit, so that each model could advertise a number of preconfigured viewpoints (pilot, copilot, back seat, front seat, tail gunner, seat 17d, etc.).
I think that any pilot viewpoint property in JSBSim aero files would be useful only for standalone or other (non-FlightGear) applications.
All the best,
David
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