There's currently no concept of a "scene" (you essentially add shapes which are immediately drawn to the canvas, never saved) so animating a given shape involves changing it slightly and redrawing everything manually.
As for a next step for the project, I'd like to keep track of the objects added to the scene, and draw them intelligently.
As for a next step for the project, I'd like to keep track of the objects added to the scene, and draw them intelligently.