"Apache" <apa### [at] yahoocom> wrote in
news:3d3c9697$1@news.povray.org...
> Can it do spheres too?
Yes, it can do spheres, too. In fact, spheres are in
most cases relatively easily computed. Usually you
specify some points on the surface of the sphere and
give them the function-value 0.0 and one (or more)
points inside of the sphere with a negative function-
value to make sure the function isn't completely 0
Then you let the prog find a fitting 2nd Order Poly.
This works in most cases.

Greetings
Thies

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