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That was it! It never occured to me that the problem would be in a
different object than the one the scratches seemed to be on. The glass lamp
base is the one that needed "sturm", not the back wall.
Thanks for the pointers. I've updated some of the old syntax already, but
pointed you to a copy I made earlier, without all my current mess in it from
playing around.
The warning "Refraction value unnecessary to turn on refraction" is hard to
understand. Does that mean that if ior is present in the interior, then
refraction is indeed ON and this statement is unnecessary?
--John
"Chris Huff" <chr### [at] mac com> wrote in message
news:chrishuff-D2DFC9.20241514032001@news.povray.org...
> In article <3ab01033$1@news.povray.org>, "John M. Dlugosz"
> <joh### [at] dlugosz com> wrote:
>
> > 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.
>
> You have a quartic object! This seems to be the source of the
> problem...using "sturm" in it eliminates the line in my tests.
> There are several other problems as well..."refraction" and "caustics"
> are no longer used in a finish{} statement, "refraction" is now "ior",
> and both are in interior{}. You have several coincident surfaces
> problems...mainly with cylinders and differences. You are missing a
> semicolon at the end of the declaration for "ft". However, the scene
> seems to render fine...but these should be fixed.
>
> --
> Christopher James Huff
> Personal: chr### [at] mac com, http://homepage.mac.com/chrishuff/
> TAG: chr### [at] tag povray org, http://tag.povray.org/
>
> <><
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