"Jeremy M. Praay" <jer### [at] questsoftwarecom> wrote in message 
news:4210f96b$1@news.povray.org...
>
> "Ross" <rli### [at] everestkcnet> wrote in message 
> news:4210f67c$1@news.povray.org...
>>
>> very much so. great texture too. however, what are those artifacts on the
>> bottom left corner of the lid? they look like they sort of continue all
>> around the bottom edge of the lid, but are more noticeable on the left 
>> side.

> Maybe I need to check my max-gradient or something (though I always 
> thought that led to black spots).
>

Increasing the max_gradient only made more spots appear, which had me 
puzzled for a bit.  Eventually, I realized that it was creating a ring 
around the object (like Saturn), and it just so happened that it was right 
along the bottom, which corresponded to the bottom of the 
pigment-image_map-heightfield-thing.  Adjusting "contained_by" by an 
extremely small fraction fixed it.

I guess it was something similar to a coincident surfaces problem.

-- 
Jeremy
www.beantoad.com

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