Re: water running down a window

Water running down a window implies realistic interaction between the droplets. Asking how to simulate it implies you don't need realism or you don't know how difficult this is to do. If your need is for a stylized effect, explore all of your options in AE as described here and a search will yield tons of interesting suggestions for combining displacement maps, foam, mr mercury, rain, drizzle, and some other effects you might not think of as simulating liquids.

However, my advice is: Shoot it.

bogiesan

This is my standard sigfile so do not take it personally: "For crying out loud, read the freakin' manual."