creating FOG in inferno

[UnDeR_FLiP]

Hey all,
This is mostly for learning purposes, but I'm trying to create a realistic fog. I have loaded up a particle present and messed around with it's values and have managed to get a decent looking fog so far, but I'm having trouble adjusting the speed at which the fog moves/circulates. It is going way to fast and no matter what values I play around with, nothing seems to affect the speed.

I'm thinking this will come down to an expression...does anyone know of any good tutorials on this? Or better yet, can someone provide me with an expression for speed with particles that I can mess about with?

Thanks all!

[pixelhussar]

This is a good starting point. Hope it helps.

[pixelhussar]

I mean this one:

http://www.fxguide.com/modules.php?n...showpage&pid=5

[UnDeR_FLiP]

great! thanks for the link

[fudini]

The link on that page pointing to "Tip: Simple Vapour Particle System" is broken, here is the correct link:

http://www.fxguide.com/modules.php?n...wcontent&id=53