MACROMEDIA STUDIO 8-EXPLORING STUDIO 8, Руководство пользователя

Страница: 69 / 350

Flash basics 69
■
To convert a keyframe to a frame, select the keyframe and select Edit >
Timeline > Clear Keyframe, or right-click (Windows) or Control-click
(Macintosh) the keyframe and select Clear Keyframe from the context
menu. The Stage contents of the cleared keyframe and all frames up
to the subsequent keyframe are replaced with the Stage contents of the
frame preceding the cleared keyframe.
■
To change the length of a tweened sequence, drag the beginning or
ending keyframe left or right. To change the length of a frame-by-frame
animation sequence, see “Creating frame-by-frame animations” in
Using Flash .
■
To add an item from the library to the current keyframe, drag the item
from the Library panel onto the Stage.
Using layers
Layers are like transparent sheets of acetate stacked on top of each other on
the Stage. Layers help you organize the artwork in your document. You can
draw and edit objects on one layer without affecting objects on another
layer. Where there is nothing on a layer, you can see through it to the layers
below.
To draw, paint, or otherwise modify a layer or folder, you select the layer in
the Timeline to make it active. A pencil icon next to a layer or folder name
in the Timeline indicates that the layer or folder is active. Only one layer
can be active at a time (although more than one layer can be selected at
a time).
When you create a new Flash document, it contains only one layer. You
can add more layers to organize the artwork, animation, and other
elements in your document. The number of layers you can create is limited
only by your computer’s memory, and layers do not increase the file size of
your published SWF file. Only the objects you place into layers add to the
file size. You can also hide, lock, or rearrange layers.
000_ExploringStudio.book Page 69 Tuesday, August 30, 2005 9:30 AM