"Trevor G Quayle" <Tin### [at] hotmailcom> wrote:
> You are still having the same problem with your cones, or rather similar.  You
> are now working from 0 to 180 degrees, with the angle being the angle from the
> north pole.  The cone has a defined height of 2*SphereGrid_radius*y, but the
> radius of the cone is 2*SphereGrid_radius*abs(tand(SphereGrid_value)).  When
> angle=90, tan(90)=undefined, giving you a problematic cone, which happens to be
> the equator gridline.  If you want to continue the way you have it, have an
> additional #if statement for SphereGrid_value=90 which differences a box
> instead.
>
> -tgq

OK, that fixed it. Thank you! Also, is there a way I can use the #switch
statement instead of branching #if and #else statements? I don't mind using
#ifelse statements (which POV-Ray doesn't have), but I hate using branching
where it's not necessary.

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