Hello,

I am not so good at maths.

I need a formula for calculating the X and Y coordinates for some nice looking smoke made of 2D particles, Z is not important but I could also use this to scale particles a bit.

This would be great.

If somebody has some other formula for nice particle effects that would also be great. Right now I am trying to do some rain, this should be simple enough for me!

Thanks,
Firle