Well we have Get position, Get Altitude and a whole bunch of other gets, I'm wondering if it would be possible to either interpret a Get Angle via some math/trig (eeek !!) involving two or more "get Positions" or possibly some new function "Get Angle". I dont mean Angle to the virticle, we already have this but rather angle as in heading. This would enable distributions to be constrained to North, East, South and West variations and also allow angle of incidence to be calculated (useful for transparent and reflective objects). Also the request for a vortex ability could be extracted somehow (function wizards take note :) ). In fact a Get Angle function could be put to many uses. What do people think and is this even possible?
Very tired so please excuse my ramble ;)
Search for the 'North Face' clip I posted a while back. It could use a little cleaning up, but it might be what you're looking for.