Cheers all of you
Quote from: Hannes on May 27, 2016, 11:31:31 AM
Looks great, Martin! So how did you create the "shelf" and the main cumulus part inside one cloud layer? Or was it accidentally?
"Accidents" still happen, fortunately in this context
However, it was no accident.
See the attachment for a screenshot of the node network.
Here's how it works in a nutshell:
Each colour adjust creates a gradient from black to white over a certain altitude range.
If you multiply those you can create a "altitude range mask" which specifies at which altitude range your cloud can exist.
The range is about 30 meters.
There's a 2nd set which creates a mask 100 meters above the other.
You add these together and a transform node allows you to easily move the whole thing up/down without having to re-enter values in the 4 colour adjust shaders, very handy.
The result you use as a blendshader for the fractal.
Despite that all the colour adjust nodes and the fractal is clamped, I did have to use a clamp scalar to make it work. Don't know why exactly, but it works!
In the end you simply use an "add scalar" node to add this shelf-setup to the cloud density network you built, very easy.
[attachimg=1]
Here's how it looks in the preview. I exaggerated the visibility of the layer quite a bit for demonstration purposes. You can clearly see (to me at least) the 2 altitude bands where the stretched and flattened cloud fractal exists in.
[attachimg=2]
