> as regards the conversion of degrees to radians in order to use Povray's
sin
> and cos functions (which work with radians?)

If you think that's the problem (I didn't render the scene), just use
POV-Ray's radians() function. If you'd rather not use that, you could use
degrees * pi/180. Though, 57.3 is fairly close, I think it will start to
look wrong after a large number of rotations.

 - Slime
 [ http://www.slimeland.com/ ]

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