How can we move things around?

We can think of animation as change over time. This can include not only motion, but also changing color, transparency, or even the shape of an object. There are two kinds of animation:

• Predefined animation

• Dynamic animation

Predefined animation is always the same, like a pre-rendered cartoon that you see on television or an animation you would make by creating frames on the timeline in the Flash IDE. Dynamic animation can be different every time you see it, either by implementing randomness (for example, changing the color of an object randomly every five seconds) or by user interaction (for example, scaling an object by clicking on it). Dynamic animation is created by code instead of using the timeline.

Animation by user interaction is always dynamic, but dynamic animation is not always triggered by user interaction. It can also be a predefined sequence of animations with some randomness that was built in by the developer of the program. The categorization...