I set up a small view, placed three concentric circles in it, and then applied the CGAffineTransformMakeScale function to it. This was meant to achieve the effect of expanding ripples, but unfortunately, the circles become very pixelated as they expand.
I would have thought that these transforms take advantage of the fact that Coregraphics draw routines create vector graphics, but my expanded image looks like an enlarged bitmap with no smoothing at all.
I guess I could create expanding circles by some sort of exotic timer dance, but is there a way to get good results just using the CGAffineTransforms?
Thanks for any insights on this.
John Doner