Zoom and pan gesture problems

[spit40]

If the aspect ratio of an image is not portrait then when zooming into a section of an image you lose the image as the centre of zoom is not where you drew the circle. You have to pan around looking for the image. Pan is also unreliable and often turns into a zoom. Zoom could be done with buttons but better panning would really help thanks. if there's anything you can think of?

[BeamRider]

Part of this is related to Issue #5, more investigation on the rest is ongoing