Game Development Reference
In-Depth Information
duplicate layer. Then precompose the duplicate with the Move All
Attributes option selected. Next, in the new precomp layer, mask
out the original portion of the layer, isolating the refl ection. You
are then free to lower its opacity and apply another mask that has
feathering to create the transparency falloff.
The Offset Effect
The Offset effect is another simple effect. It just allows you
to tile an object by offsetting it. It differs from simple position
because it repeats the layer like a tile, as demonstrated in Fig. 7.49.
We'll be continuing on in this effect with the Distort.aep project.
There is also an interesting feature that allows you to see the
original layer—Blend With Original. As you increase this value, it
becomes like an opacity value for the original and also indicates
how much transparency is removed from the Offset copy. An
example of this is seen in Fig. 7.49.
Figure 7.49 The Offset effect
applied to the dotted line layer in
the Motion Graphics comp. Here,
the offset copy is shifted down
and to the right of the original
dotted line, and the Blend With
Original value is at 30%.
The offset effect is obviously great for things that need to tile. If
you were going to create a news ticker at the bottom of the screen
that you wanted to keep playing over and over, you could just
make one instance of the ticker and cycle it with the Offset effect.
This same trick could be used in a similar way with cars on a free-
way, passing stars in the sky, and so on.
But because of this little Blend With Original value, we can also
use the Offset effect to quickly create multiple copies of an object
by duplicating it. By lowering the Blend With Original value, your
layer seemingly becomes two layers. With every duplicate of the
Offset effect, you create another instance of the composite result
of all previous applications of the Offset effect. So, as you dupli-
cate the Offset effect, the number of instances of your original
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