Information Technology Reference
In-Depth Information
ActionScript allows custom scripting to be integrated into movies by adding
scripts to frames (frame actions) or objects (object actions). ActionScript can
be applied in an easier context than hand coding by using behaviors in Flash.
Similar to behaviors in Dreamweaver, Flash behaviors allow easy access to
basic scripting functions that add interactivity and enhanced multimedia capa-
bilities to Web pages.
Unit Values in Flash
The timeline in Flash is where all the elements in the Flash movie are positioned
over time. Time needs be involved when motion and animation is involved.
Animation is defined as change over time. Motion graphics is a form of
animation. The unit of measurement that is used in Flash to represent time is the
frame . A series of frames with objects runs over time to present an animation.
The frames are designated a speed rate when the designer creates the movies.
The FPS (frames per second) is typically set for 12-15 FPS for Web based
animations. The timeline status display at the bottom of the timeline indicates the
selected frame number, the current frame rate, and the elapsed time to the
current frame.
The higher the FPS rate the faster the animation will try to perform. However,
the animation has other factors that affect its performance. The first is the speed
of the user's computer. The second is the speed of the internet connection. The
performance attributes that you design into your animation also affect the way
the motion graphics play. For example, bitmap images with heavy file sizes tend
to animate slowly. Bitmaps must be optimized correctly and they also must be
scaled appropriately for the Web so they perform and communicate. Vector
images and shapes drawn in Flash animate quicker than bitmap images. For this
reason, we will examine text based animations that are small in size and big in
communication. Gradually we will learn about bitmap basic bitmap usage while
creating an animated banner.
Thinking about the Text Animation
Creating even the simplest text animations in Flash requires creative planning.
It is essential to develop a compact, persuasive message that will translate well
in the realm of motion graphics. To do this, you should write out your ideas in
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