"Jim Charter" <jrc### [at] msncom> schreef in bericht 
news:47a49161$1@news.povray.org...
>>
> Cool.  Some promise, but I think when you finally get what you want you 
> will be some distance from this approach.  I don't think real moss growth 
> would respect the structure of the stones much at all unless it would be 
> to spread from the cracks or some other surface where it first takes root. 
> From places that have more to do with sun or lack of, or water pockets? 
> The interruptions where the stones are rotated just wouldn't happen much 
> at all I don't think.  That is the 'creepy' part about organic growth.  It 
> has no respect. It just crawls over everything.  Moss does seem to 
> 'coagulate' into clumps though, so you have gotten some of its aspects 
> with a procedural texture.  I am thinking just a plain old bozo pattern 
> might work better.  The technique you have now, agate? suggests that the 
> moss is responding perhaps to a certain mineral veined in the stone. 
> Maybe lichen would be more like that?  I am not much of a naturalist.

yeah.... :-(  you are absolutely right, Jim. This first quick and dirty 
approach is not leading anywhere. My first objective was to get a decent 
distribution of broken columns, which at least seems satisfying.

I wondered if I could get something decent with this (agate) pattern. Bozo 
might work better indeed, in combination maybe with boxed, to take the seams 
into account. Which reminds me that I also wanted to experiment here with 
your excellent Stained Stones macro. That will be another path to explore 
more fully.

Thomas

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