In article <3abcbec0$1@news.povray.org>, "Mick Hazelgrove" 
<mic### [at] mhazelgrovefsnetcouk> wrote:

> but in my experience method 3 (as with 1&2)leaves artifacts that sometimes
> spoil the look of the clouds, to remove these it is necessary to bump up
> intervals and samples which makes the rendering very slow.

The sample_spacing keyword will help fix this problem, and you could use 
transparent objects to force new intervals in the problem areas. Also, 
make sure you use a sphere, not an infinite plane.


> Sorry but in my experience planes, especially if you use boxes instead of
> planes and and scale them so they are non-infinate objects are faster.

I've always found them slower. And there isn't any kind of anti-aliasing 
that can be done to save samples in areas that don't need them, like 
media method 3 can do.

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

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