'completionCurve' is ignored

[rsanchezsaez]

It seems that completionCurve in ignored in the current implementation (it always seems to uses a linear curve when completing the transition animation). It'd be nice if we could use the easy in out curve for completion (while keeping the linear one when interacting with the transition).

[MrAlek]

Agreed. I would happily review a PR :)

One would have to map the UIViewAnimationCurve enum to a CAMediaTimingFunction name and then do a bit of math on cubic bézier curves in a category to get the progress value for each point in time.