In article <3A5C8865.B4F2DD11@my-dejanews.com>, 
gre### [at] my-dejanewscom wrote:

> But I ran into a problem that may point to a problem with additive
> functions, high powers, or isosurfaces.  The image with the same title
> as this post in p.b.i. was made with the code at the end of this post.
> It aims to make a recursively noisy surface for simulating coasts, etc.

Try changing the accuracy and max_gradient settings, the problem is 
likely that you are simply getting too detailed for the isosurface to 
handle at default settings. And I'm not even sure the isosurface can 
handle these functions...it certainly won't be fast, and the finer 
details may be lost to numeric precision problems. Maybe you should just 
use a function pattern, if that is possible for what you are doing.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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