Multitouch zoom needs tweaking

[Rama Lightfoot]

As subject says it needs tweaking - biggest problem is that zooming in
or out only zooms a small level in or out. While part of the issue may
be render methods not allowing in between steps being rendered - could
it still be allowed to zoom multiple levels in and out with the pinch
and stretch?

Also, using a static image while zooming in and out, and doing a
smooth zoom while doing this would allow the program to feel very
smooth while maintaining specific zoom levels (if that is the issue as
I understand it).

[Michael MacDonald]

I think the primary issue with zoom smoothness has to do with the
difficulty I have telling a multi-touch drag apart from a pinch zoom. I
think this is a problem that other programs with pinch zoom don't have
to deal with. My heuristic for solving this is ad hoc and probably
could be tweaked for the better, though.

--Michael MacDonald