On 17 Oct 1999 06:05:58 -0400, Nieminen Juha
<war### [at] punarastascstutfi> wrote:

>  I have not tested it, but I would bet that the problem is in the bounding.
>  If I remember correctly, a torus is bounded with the difference of a
>cylinder and a smaller cylinder. If the minor radius of the torus is greater
>than the major radius, the inner cylinder will have a negative radius (instead
>of havin a radius 0 as it should).

A torus is bounded by two open cylinders and two capping discs with
holes. If minor > major then the hole of a capping discs would be
greater than its radius. Also, the inner bounding cylinder would
become outer and vice versa, which might pose some "insidedness"
problems.


Peter Popov
ICQ: 15002700

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