On 5/8/24 09:26, yesbird wrote:
> Could you please share a code of this 'moss and grass' ?

Attached is something like what I used - it produces the bottom part of 
the attached image... The coloring comes from Ingo's light colors.

I don't have the original scene anymore as I was playing with this and 
that. Plus, I was using my yuqk fork for which the "numerical issues" 
are a little different the official releases of POV-Ray. This shown in 
the top row of the attached image where on the left is Ingo's original 
at 1e-3 and the same rendered with the yuqk fork on the right(*)

The biggest changes for the fuzzier results was not using the larger 
positive sphere and changing the negative squashed spheres into positive 
components.

Bill P.

(*) - Part of what is happening in the original posted scene is that as 
we scale down in y, except for the edges, the negative components start 
to cleave off little round bits of the  larger sphere rather than blunt 
it in a faceted way. The yuqk fork shows this a little better, because 
it's numerical accuracy with blobs is a little better.

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