Cross-posting is a no-no.

You might try media in blobs maybe, using the negative strength
component(s) to affect the visible ones. Guess it's possible to clip a
cloud textured object, but think all you'd get is sharp edges. Best thing
would be procedural texturing which blanks out for the invisible parts,
translating the texture for movement. Just a layered texture like that on
a plane might be okay for both cloud motions.


> 
> Hi!
> 
> I like to control the movement of clouds over a terrain. The cloud(1) come
> from south direction, cloud(2) from north, and the hill modifies the moving
> direction of booth clouds. I think its possible with bounding objects and
> transparent parts in the firs time over the hill... Any suggestion? See my
> hand made (sorry, mouse made) picture attached...
> (brrrrrr so bad english...)
> Thanks!
> 
> Steve Line (in english translation)
> 
>  [Image]

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