Using interpolator value mappings

Interpolators and Alpha Object Provide Time-based Animations

An Alpha object produces a value between zero and one, inclusive, depending on the time and the parameters of the Alpha object.

Interpolators are customized behavior objects that use an Alpha object to provide animations of visual objects. Interpolator actions include changing the location, orientation, size, color, or transparency of a visual object. All interpolator behaviors could be implemented by creating a custom behavior class; however, using an interpolator makes creating these animations much easier. Interpolator classes exist for other actions, including some combinations of these actions.