"Chris Huff" <chr### [at] maccom> wrote in message news:chrishuff-> > Any
idea what causes the black streak in the middle of the wall?  I
> > always figured it was a shadow of the tip of the glass, but the
> > streak is in all directions, not just where the tip is.
>
> It looks like a solver error...is the wall or glass a sor, lathe, poly,
> or anything else which can use the sturmian root solver? If so, did you
> try using "sturm" or moving the camera/light source around a bit?

It's a simple curve made with a cylinder.  I tried moving the light source a
tad, nothing I can use with strum.  I posted the code in a reply to Ken.

--John

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