Actually when I watch the "drift" it seems to me that the floor and the
spheres haven't much friction between them.  Is this a possibility?

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None <Non### [at] onca> wrote in news:Xns### [at] 204213191226:
> [...]
>          rotate <0,RotY,0>
>          translate <0,BallRadius,0>
>          rotate <RotX,0,RotZ>
>       Center_Trans(Ball, x+y+z)
> [...]

Uh, Just realized the RotY rotate should be after the Center_Trans()... ok.

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"Neonux" <neo### [at] softhomenet> wrote in news:3f6ba523
@news.povray.org:

> Actually when I watch the "drift" it seems to me that the floor and the
> spheres haven't much friction between them.  Is this a possibility?

I can see what you mean but no.  The physics, as it is, doesn't allow 
frictionless contact or "sliding".  The problem was that with the way I was 
drawing the balls, the more a ball rotated the more the ball's texture 
rotation was off from the physics rotation.  The "drift" is actually that 
the balls are moving a little in direction A but the texture rotation is 
going in direction B, slightly off.  I think I have a solution for that 
now.  I will post the results here.

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