ITweenableDrawing ITweenableDrawing defines the method signatures of tweenable drawn Shapes.
 AbstractShape AbstractShape provides an API base class for drawn shapes.
 Bezier Bezier provides a Tweenable curve which, unlike Curve requires a Control Point.
 Curve Curve provides a Tweenable 3-point curved line which, unlike Bezier does not require a control point.
 DrawStyle DrawStyle provides a base preference set for API Drawn Shapes.
 GradientRect GradientRect provides a gradient rectangle shape.
 Line Line provides a Tweenable line Shape.
 Raster Raster provides utilities for drawing directly into BitmapData objects.
 Rect Rect provides a Tweenable rectangle Shape.