None <Non### [at] onca> wrote in news:Xns### [at] 204213191226:

> "Rune" <run### [at] runevisioncom> wrote in
> news:3f6ab6ef$1@news.povray.org: 
> 
>> [...]
>> This should be no problem. How are the rotation vectors in your
>> psysics system stored? In what format?
>> [...]
> 
> Yeah, I must have been tired because I wasn't getting it.  Haven't
> [...]

I've been thinking about this all day and I think I've found the 
solution.  My problem all along, and the reason none of the things I 
tried, including the matrix transforms is because the rotation vector 
with which I make calculations is not located in the center of the balls, 
it's on the surface of the balls!!  DOH!  I knew I was too tired to crack 
this problem earlier.

Because they are balls and the surface is the everywhere the same, I'm 
thinking of doing something simple like:

    	rotate <0,RotY,0>
    	translate <0,BallRadius,0>
    	rotate <RotX,0,RotZ>
      Center_Trans(Ball, x+y+z)

Hopefully that should do the trick!  I'll post back with new animations 
if it is...

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