warp/displace blendshader for density fractal for a cloud *update 2 - done*

[Goms]

i also had some problems when i started to use functions, but most time you can use the last function node as input for a displacement or power fractal shader. on this way you can see what you are doing most of the time.

[mogn]

By the way.. if you're reading this Matt, a function node to calculate the angle (in [0, 2pi]) of a point relative to the origin (0,0,0) would be nice. The arc* functions don't really do that unless you surround them with a lot of extra nodes. Maybe one for each of the three planes.

[nikita]

Nice! 

[Mr_Lamppost]

Nice result and thanks for sharing the method.

I got a grip on using functions quite quickly but only very recently managed to do anything with the warp shader  I will need to investigate further.