[[ klein bottle ]]

> > Doesn't look like the ones on wikipedia
> > (http://en.wikipedia.org/wiki/Klein_bottle).
>
> The default contained_by object is box{-1, 1} and it's to small for that
> object.
> You need this:
> contained_by{box{<-2.88, -2.42, -3.66><2.88, 3.04, 3.66>}}
> As small as possible.

Hmmm, maybe this should be documented somewhere.

> The function have a prety high max_gradient: 180 to 2500 depending on
> P0, the orientation and camera position.
> As it is, the shape can be considered as "fat".
> P0 is required but have no apparent effect: same result with values of
> 0.1, 1 and 10. It DOES affect the max_gradient: large value = high
> max_gradient but don't affect rendering time.
> Anyway, the bottle from the function don't look the same as the
> representation you mention. It's, owever, topologicaly identical.

Thanks!

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