Adobe Flash Professional CS6 Adobe Flash Professional CS6 Classroom In A Book | Page 371

P Note: Flash does
not recognize different
Alpha levels of a mask.
For example, a mask
drawn with a fill at an
Alpha value of 50%
will not reveal the
underlying content
at 50%. However,
with ActionScript
you can dynamically
create masks that will
allow transparencies.
Masks also do not
recognize strokes.
15 Choose Control > Test Movie > in Flash Professional.
As the motion tween proceeds in the Mask layer, more of the Masked layer
is revealed, creating a cinematic transition known as a wipe. If you open
09_workingcopy.fla and choose Control > Test Movie > in Flash Professional,
and then click on the car movie clip, you’ll see that the masking effect is
preserved even as it is loaded into another Flash movie.
362
Lesson 9
Loading and Controlling Flash Content