Chapter 10
270
Simple Shape into a Complex Shape
Figure 10.13 Flash handles the tween from an oval to
a simple fl ower shape without requiring shape hints.
Transforming a
Simple Shape into a
Complex Shape
e more complex the shape you tween,
the more di cult it is for Flash to create the
expected result. You can help Flash tween
better by using shape hints—markers that let
you identify points on the path of the original
shape that correspond to points on the path
of the  nal shape.
To shape-tween a more complex
shape:
1.
In a new Flash document, or on a new
layer, create a  ve-frame shape tween
using an oval.
In the Timeline, in frame 1, draw an oval
ll with no stroke. On the Stage select
frame 5, and choose Insert > Timeline >
Keyframe. Flash duplicates the contents
of keyframe 1 in keyframe 5.
In the Timeline,
select any of the frames in the keyframe
span (1, 2, 3, or 4) and choose Insert >
Shape Tween.
2.
Create the ending shape.
In the Timeline, position the playhead
in frame 5. Using the selection tool or
subselection tool, drag four corner points
in toward the center of the oval to create a
ower shape. (For more detailed instruc-
tions on editing shapes, see Chapter 4.)
3.
Play the movie to see the shape tween.
Flash handles the tweening for this
change well (Figure 10.13). It’s fairly obvi-
ous which points of the oval should move
in to create the petal shapes. If you modify
the shape further, however, it becomes
more di cult for Flash to know how to
create the new shape.  ats when you
need to use shape hints.
Frame 1
Frame 2
Frame 3
Frame 4
Frame 5
Animation with Shape Tweening
271
Simple Shape into a Complex Shape
Figure 10.14 The addition of a stem to the fl ower
overloads Flash’s capability to create a smooth shape
tween. Frames 7 and 8 are particularly bad.
Figure 10.15 Choose Modify > Shape > Add Shape