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Chapter 9. Animating with Shape Tweening > Changing Shape Position and Form Sim...

Changing Shape Position and Form Simultaneously

Many of the same motion effects can be applied using either motion or shape tweening. What differentiates shape tweening from motion tweening is that shape tweening is applied to editable shapes. You can change the form of the shape on either keyframe and these changes will be applied gradually by Flash across the tween, slowly “morphing” one into the other. Additionally, you can combine movement with this tweening process so your shape can change its shape as it changes its location.

Combine Shape Tweening and Movement in a Ball Animation

1.
Create a shape tween of a moving ball that begins on the left side of the Stage, hits the right side of the Stage, and then returns to the left.

2.
Click to place the playhead between the first and second keyframes in the shape tween.

3.
Click the Insert menu, point to Timeline, and then click Keyframe.

4.
Select the Arrow tool in the Toolbar.

5.
Place the pointer on the left edge of the shape and pull it to create a tail off the circle.

The shape must be deselected on the Stage to pull the edges of the shape.

6.
Click to place the playhead between the second and third keyframes in the shape tween.

7.
Click the Insert menu, point to Timeline, and then click Keyframe.

8.
With the Arrow tool still selected, place the pointer on the right edge of the shape and pull it to create a tail off the circle.

9.
Click the Control menu, and then click Test Movie to test the animation.

The ball stretches as it animates back and forth across the screen.


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