Jan 26 2009 | 4:44 pm

These are the times I wish I'd taken a single math course in college. I'm wondering if anyone can point me in the direction of various interpolation equations for use in expr.

I know there are objects for linear (line) and logarithmic (slide), but for starters they take different arguments so it's difficult to toggle between them. I like the way line works best (spitting out all the numbers on the curve in a specified timeframe), but would be open to whatever makes the most sense from a programming perspective.

Secondly, I'm interested in other types of interpolation, particularly quadratic, which seems popular for tweening in animation, essentially what I'm using this for. I'd also like to be able to "ease in and out"- also a common setting for tweens. Any help would be greatly appreciated.

Many thanks,

Zach