"PatchWerk" <pat### [at] hotmailcom> wrote in message
news:3b165b7c@news.povray.org...
> >
> > I've only flown a dozen times but the turbulence always seemed in a
> up-down
> > motion without any sway side to side (guess that would be called yaw in
> > pilot speak).  That doesn't mean I know if it really does or not.
> > The motions looked reasonable to me besides, as if a model plane for
> > example.
>
> Thanks. Actually, I used to fly little single-engine biplanes Waco's, and
> they would yaw quite a bit at low level, because of their massive tail
> area... and I am exagerrating the motion quite a bit for dranmatic effect.

Okay, I was thinking of jetliners which is what the animation plane reminded
me of (should have realized about the straight wings).  Besides that I'm
always near the wings, probably the pivot point for yaw.  I recall once my
brother told me about a small plane ride in a friends father's plane.
Expressed an opinion of constant movement in every direction, guess that
applies.
For constructive criticism I'll add that maybe you can get some hesitation
into the motion, that would improve it I think.  By that I mean it currently
moves continously in sweeps, so with some near stopping mid-way through a
few of those motions maybe could increase realism.
Should be as simple as using a #switch with #range and making a variable
drop to zero which you'd multiply by your motion equation(s).

#switch (clock)
#range (1/4,1/3)
  #declare V0 = abs(clock*(2/7-clock))
#break
#range (2/3,3/4)
  #declare V0 = abs(clock*(5/7-clock))
#break
#end

Guessing so anyway.

Bob H.

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