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Flash: Onion Skinning TutorialHome > Build >
Software > Flash
by Joe Iverson When
I first wanted to learn about onion skins, every single place on the net said
basically the same thing, and that was, "It's hard." But, it's far from
that, pretty simple if you ask me. Follow the simple steps below to get
it. Just remember, the onion skin button by the timeline will NOT export
with your movie, it's just there to show you what your animation looks like! First
thing you need to do is make the thing you want to have an onion skin on, and
when you make it an instance, make sure you make it a Movie Clip.
After
that's done, create the animation (right click on the movie clip and left click
edit), like the object moving or something.
Just remember, for every
frame in your movie clip, there has to be the same amount of frames in the main
movie. For example: if you have 60 frames in your Movie Clip, then you should
add 60 frames in your main movie.
After you have the animation all done,
right click on the Movie Clip and hit PROPERTIES, look at the bottom right of
the new window, and it will say "Instance Name," give the movie clip a name, preferably
the same name as the Movie Clip. There, now you're almost
done, just got to add some properties. Create a new layer, above the layer
of the object you want to have an onion skin on, and create 3 blank keyframes
(hit F7) AFTER the first keyframe. So, on the second layer, you should have
4 blank keyframes.
Now, double click the second keyframe in the second
layer, click on the ACTIONS tab, then click on the + and add the action of Duplicate/Remove
Clip.
- In the
Target box, type in the name that you gave the Movie Clip. (look above
if you don't know what I am talking about)
- In
the New Name box, type in trail1.
- In
the Depth box, type in 1.
Now, click on the + to assign another
action, and make the new action a SET PROPERTY action. -
Click
on Set on the upper right, and select alpha. -
In the Target box, type trail1.
-
In the Value box,
type in the percentage of transparency you want the onion skin to have. (Example:
type in 50 if you want it to be 50% transparent)
-
Then in the third keyframe, add the actions
of duplicate movie clip and set property again, but in the depth,
target, and value, add 1 to them (example: trail1 becomes trail2).
For the transparency, make it go lower, if it was 50 to start with, make
it 40 this time.
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