Thanks for all the responses.
Hi j meyer & calico,
Will download your tgd's in a mo. I like the clouds in calico's screenshot. .
Just started to try and add some noise to the whirl, make it look less perfect, more distorted and add some more parameters for control.... really no promises there though. Got bogged down on my first attempt.
Please, anybody who's interested take any of the TGD's above and try what I'm trying here, or any alternative ways, maybe not using functions but shaders instead(?). I am still fairly new to TG2 and definately to the function nodes.
Good luck and hope to see some more stuff here. Thanks again.
AM.
EDIT:
The 4 trig functions can be replaced by just two if you look carefully.. speeds it up a little.