@protocol ISCIEasingFunction <NSObject>
This protocol represents a transformation of
Animations use it to transform their progress before computing an interpolation.
NoteClasses that implement this interface can control the pace at which an animation is performed.
Transforms normalized time to control the pace of an animation.
func ease(withNormalizedTime normalizedTime: Double) -> Double
The progress of the animation.
Transformed progress of animation.