Only zoom image when the gesture is pinching outward
Only zoom image when the gesture is pinching outward

gabrielPeart/ASMediaFocusManager,Havi4/ASMediaFocusManager,DomainGroupOSS/ASMediaFocusManager,linlin5910/ASMediaFocusManager,skonb/ASMediaFocusManager,klundberg/ASMediaFocusManager,aeclean/ASMediaFocusManager,autresphere/ASMediaFocusManager