Melchior FRANZ
> * Jon S. Berndt -- Monday 19 December 2005 05:04:
> > Would it be possible to change the visual appearance of wing flex during
> > flight?
>
> As Curt and Joacim have mentioned already, there are ways to do it:
>
> (A) ornithopter method: several instances of the wing. This has the
> disadvantage that you'd need a lot of them for smooth transitions.
> No problem for the fast moving ornithopter, but one would probably
> need a *lot* of such instances for a glider wing.
>
> (B) bo105 method: wing/blade made of smaller parts that are each
> animated with smaller rotations. Smooth movements, but the hinges
> between them can look quite ugly. Not a big problem for the bo105,
> because the blade is dull and black. Wouldn't work well for a shiny
> white wing.
>
> (C) tween method: this isn't implemented in fgfs yet, but plib offers
> an ssgTweenController ("A morph controller") class. Maybe "we" should
> make it available in fgfs for wings/blades. It interpolates between
> two or more objects with the same number of vertices&faces, so one
> would only need two instances of the wing and could smoothly
> interpolate. Would probably work better than either (A) or (B).
> (see http://plib.sourceforge.net/ssg/branches.html and the
> test application: $PLIB/examples/src/ssg/tween_test/tween_test.cxx)
>
The tween method would be the way to go. There might well be other
applications for this animation: I'm thinking of pilot animation in
particular. So the effort involved could be well worth it.
Vivian
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