Defines target values at a specified point in time for a set of variables that are interpolated along a Timeline.
The developer controls the interpolation of a set of variables for the interval between successive key frames by providing a target value and an Interpolator associated with each variable. The variables are interpolated such that they will reach their target value at the specified time. An #action function is invoked on each KeyFrame if one is provided.
Defines the reference elapsed time offset within a single cycle of a Timeline at which the associated values will be set and at which the #action() function will be called.
The list of target variables and the desired values they should interpolate at the specified time of this
Defines whether or not the #action() function can be skipped if the master timer gets behind and more than one Timeline cycles are skipped between time pulses. If