Determine coordinates of a UITableViewCell while scrolling

Question

My goal is to have the UITableViewCells fade in/out when they are approaching the bounds of the UITableView and about to be covered/revealed.

The approach I have bee

Answer 1

Why not an overlay with a partially transparent gradient PNG in a UIImageView that's less translucent at the top and bottom?

Messing with cell drawing in table scrolling is going to take a big performance hit.