Mike,
  Yes I was trying to set all angles at once, and after reading yours' 
and Warps posts, I understand much better how to do this.
  Thanks a million to both of you!
Les

Mike Williams wrote:

> Wasn't it Les Patterson who wrote:
> 
>> There's something I don't understand about rotation.
>> In the case of an aircraft positioned at 0,0,0(facing camera) then X, 
>> and Z work fine, but rotate the aircraft to a right angle to the camera, 
>> 0,-90,0 and then X & Z don't rotate as expected. I understand that this 
>> is a 360degree universe, but if that's the case then why wouldn't the 
>> rotational angles be the same regardless of which direction the aircraft 
>> is pointing?
>> 
>> What is a good solution for "dipping" the wing when rotated 0,-90,0? The 
>> only thing I've been able to do is change the angle of the nose of the 
>> plane with either X or Z rotation. I know there is probably a simple 
>> answer for this but it seems to escape me.
> 
> 
> Let me make a bit of an educated guess that you are trying to do both
> the Y rotation and the wing dip with a single rotation. Try doing it as
> two separate rotations instead. 
> 
> Either
>         rotate <0, 0, 20>       // wing dip
>         rotate <0, -90, 0>      // turn
> or
>         rotate <0, -90, 0>      // turn
>         rotate <20, 0, 0>       // wing dip
> 
> What happens is that POV performs the three components of rotation in
> the order X,Y,Z. If you try to write it as "rotate <20, -90, 0>" then
> the X rotation (currently nose angle) happens before the turn. If you
> try to write it as "rotate <0, -90, 20>" then the Y rotation happens
> first, and the Z rotation (which originally would have controlled the
> wing dip) now affects the nose angle.

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