In article <39ca7124@news.povray.org> , "sacrofts" 
<sac### [at] tinyonlinecouk> wrote:

> Can anyone help? If I have a sphere, and touching at any one point on that
> sphere I have another >object, is there any way I could control the rotation
> of that object relative >to the axis of the sphere's normal at that point? For
> the image I'm working on, I have the radius of the sphere, the angle of the
> object from the 'north-pole' of the sphere, and the angle around the sphere
> measured from the positive x-axis.

What you are looking for is the vaxis_rotate function.  You find it
explained in the documentation under:  Scene Description Language > Language
Basics > Vector Expressions > Vector Functions

The parameters in your case would be as follows (I think):

    vaxis_rotate(point, normal, degrees)


     Thorsten

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