I was trying to outline some shapes.  For example lets take a sphere:

sphere {<100, 120, -85>,75 texture {clear_black}}

The trick I was given was this:

sphere {<100,120,-85>,85 texture {pigment {rgbt 1}}
                         interior_texture {red_frame}}

Its what you see in the top left here:

http://www.wwwmwww.com/TRON/Outline.png

I soon learned I had to use the no_shadow flag to get what I wanted however.
And it wasn't till receintly I noticed something else was missing.  The
reflection of the grid lines are gone from the black sphere.  To get these
back I need to use the no_reflection flag as well.  However when I do that
I lose the outline of my black sphere as seen in any reflection.

Ideally what I'd like to do is to say the larger r=85 sphere doesn't cast a
shadow or is seen in any reflection inside it however it does cast a shadow
and leaves reflections outside it.

Is there any way to do that?

Thanks,
Carl

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