Provides a mechanism for animating object properties between different values.

This package provides classes for defining object properties to animate, via the PropertySetter class. KeyFrames encapsulates the definition of the times (using KeyTimes) and values (using KeyValues) to interpolate between, as well as the type of interpolation to use between these values. Interpolator is an interface that is implemented by DiscreteInterpolator, LinearInterpolator, and SplineInterpolator for built-in interpolations, but applications can define their own custom interpolation as well.