Chapter 9. Animation with Motion Tweening

Animating movement and changes to shapes by hand (frame by frame) is labor-intensive. Adobe Flash CS3 Professional reduces the number of frames you must draw when you use a process called tweening. In Chapter 8, you created a three-frame animation of a bouncing ball by changing the position of the ball graphic in each of the three keyframes. Then you learned how to stretch out the animation by adding in-between frames that repeated the contents of the preceding keyframe. With tweening, you create similar keyframes, but Flash breaks the keyframe changes into multiple steps and displays them in the in-between frames.

To tween a graphic, Flash creates a series of incremental changes to that graphic; these ...

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