clipka <ano### [at] anonymousorg> wrote:
> Am 09.04.2015 um 21:01 schrieb clipka:
> >
> > I've just submitted a fix to GitHub
> >
(https://github.com/POV-Ray/povray/commit/c3551f249c89ffc817a4deb2acea0412a0b9913f).
>
> BTW, the intention of the new implementation is that a spindle torus
> (one that intersects itself) behaves like a union, i.e.:
>
> - the spindle volume (the volume of self-intersection) is considered to
> be inside the torus
>
> - the spindle surface is visible (provided you find a way to look
> through the regular torus surface), and textured as a straightforward
> continuation of the regular torus surface; most notably, when using an
> interior_texture, the spindle surface's side facing the coordinate
> origin uses the interior_texture, while the other side uses the regular
> texture.
>
> (If someone wants to do me a favor, can you please test whether the UV
> mapping on the spindle surface makes sense.)
>
>
> Also, specifying either a negative major or minor radius now has the
> same effect as using the "inverse" keyword, but prompts a parse warning.
> (Specifying both a negative major and minor radius negates the effect,
> but will prompt two warnings.)

Hum! Thank you very much. But from the point of view of equation, a negative
major or minor radius should produce the same geometry as the positive one.

I can't compile it, too.

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