Your Wish is My Command

17.4 Conclusion 349

For instance, consider an interface in which two objects (Ellipse0 and

Ellipse l) follow their respective animation paths in response to clicks on

two different buttons (RectO and Rectl). In Director, the animation path of

each ellipse is stored in separate parts of a single time line, as illustrated in

Figure 17.3. When a button click occurs, the system changes the global time

frame to the corresponding animation path. Whatever animation paths

were already in progress are terminated, as each object has a fixed state in

the new time frame. Thus, one object will not continue its