In article <4062e844@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   It's an ellipsoid in the colloquial sense of "elongated sphere", but
> is it an ellipsoid as defined mathematically is another question. :)

A sphere is technically an ellipsoid. All shapes formed by uneven 
scaling of spheres are ellipsoids, and are described by the equation:

x^2/a^2 + y^2/b^2 + z^2/c^2 = 1

Anyway, a "cylinderical ellipse" doesn't make sense, but the 
"cylinderical" part is making me think of an elliptic cylinder:
http://mathworld.wolfram.com/EllipticCylinder.html

x^2/a^2 + y^2/b^2 = 1

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: <chr### [at] tagpovrayorg>
http://tag.povray.org/

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