On 27-11-2017 12:02, Sven Littkowski wrote:
> For the horizon fog layer that will hide the edges of the cloud area, i
> was thinking about a cylinder with a density that increases towards the
> center and fades away at the edges. Please see the illustration.
> 
> I tried, but I admit i lack knowledge and understanding. Please see the
> scene code and advise me. Big thanks.

It depends of what you want. If it is a fading away of the clouds 
towards the edge, you would need a cloud media using density 
{cylindrical etc} to get the proper effect, in addition to the clouds 
proper. Not entirely trivial to do, although I think it possible. I 
shall try later when I get some time. Somewhat easier would be, I guess, 
hiding the edge in a more opaque mist (also with cylindrical) but then 
as an atmospheric effect. You know that you can layer media like you can 
layer textures?

-- 
Thomas

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