Zooming "catches" on edges

[pluscubed]

Here's a video of what I'm talking about: https://youtu.be/to_BOMs7H2U

From my initial debugging, what appears to happen is that the predicted vTranslate coordinates in onTouchEvent() are off because of the centering in fitToBounds(), causing the vCenter coords to be off and the vTranslate coords to be corrected in fitToBounds() to that edge. This would explain why the further off the center, the worse the "catching" is.

[davemorrissey]

It has to be this way because the image should be centered in the dimension it doesn't fill. Otherwise when you zoom out you could leave the image off center. I don't plan to change this behaviour.

[pluscubed]

Hmm... I suppose this is a question of whether to maintain the user's initial intended center (and "catch" to readjust because of the centering) or to change to the new apparent center as the photo's width/height becomes larger than the viewport. Google Photos takes the second approach so the zoom seems unaffected by the edge and more smooth.

[pluscubed]

Google Photos appears to "catch" when zooming out to center the photo, but readjusts to the new center while zooming in so there's no catching.

[abhi385]

how to make zooming with out limit.

[davemorrissey]

I've improved the behaviour in 3.6.0.