Andy Ross writes:

 > Hrm... I'm not liking the idea of specifying explicit, absolute angles
 > as the interface here.  First off is the problem of configuration --
 > what are the appropriate angles?  If we put them in the property
 > interface, then both the FDMs and the model need to know.  If we use
 > abstract coordinates, only the model cares.

In fact, the model doesn't have to know if the FDM does, and
vice-versa -- I can just let my models trust the FDM, and any visual
anomalies will indicate an flight-model bug.

 > Also, this ties us to a particular style of surface design.  Not all
 > control surfaces simply rotate around a joint.  In particular, flaps,
 > slats, spoilers and speedbrakes often have a translational component.
 > Should the FDM worry about this too?

Good point.

 > And then there's the fact that YASim cares nothing at all about these
 > numbers.  Adding them to the FDM would do nothing but add complexity;
 > there is nothing useful I can do with them.

I hadn't realised that YASim didn't know the deflection angles.  I'm
just as happy either way -- I had thought that the all the FDMs
already did know the angles, it wasn't worth making the 3D models
recalculate them, but it's not a lot of extra trouble (except for
Tony, if he has to change his last checkin).


All the best,


David

-- 
David Megginson
[EMAIL PROTECTED]


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