Enumeration Case

SKActionTimingMode.easeIn

Specifies ease-in pacing. Ease-in pacing causes the animation to begin slowly and then speed up as it progresses.

Declaration

case easeIn = 1

Discussion

By creating two separate actions, a moveTo(x:duration:) and a moveTo(y:duration:), and setting the former to SKActionTimingMode.easeIn, you can visualize the effect of this timing mode by tracing the path of a circular shape node running the actions in a group:

Visualizing ease-in pacing