"Warp" <war### [at] tagpovrayorg> wrote in message news:3ddb680f@news.povray.org...
> Tom Melly <tom### [at] tomandlucouk> wrote:
> > Each edge of each triangle is shared by another triangle.
>
> Not necessarily. (This is only true for closed meshes.)
Heh - KISS.
I'm also slightly assuming that meshes created from exported models will tend to
be closed (since they rarely have infinitely thin elements).
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