2.02 Very Important Terms
|Persistence of Vision||refers to the way our eyes retain images for a split second longer than they actually appear, making a series of quick flashes appear as one continuous picture.|
|Frame-by-Frame Animation||refers to the way our eyes retain images for a split second longer than they actually appear, making a series of quick flashes appear as one continuous picture.|
|Computer Assisted Animation||The computer is used to make the animation process quicker and easier.|
Usually involves 2-D images
Can be hand-drawn and scanned into the computer.
Can be drawn directly into the computer using graphics tablets.
The images are positioned into keyframes containing the most important movements.
Tweening is then performed by the computer to create images between keyframes.
|Computer Generated Animation||All images, objects and animation are created on the computer.|
Typically uses 3-D images.
Adds two steps to the animation process.
Modeling - process of creating a wireframe structure of the 3-D objects and scenes.
Rendering - process of applying colors, textures, shadows, transparency, etc. to create the final image or animation.
|Path Animation||Also called vector animation. An object follows a path which is a line, or vector, inserted by the animator|
|Morphing Animation||The term morphing comes from the word metamorphosis, which is the transformation of one thing into another.|
The beginning image is inserted.
The ending image is inserted. The computer performs the tweening to generate a sequence of images, each of which is slightly different from the one it follows to gradually morph the two objects.
For example, a photograph of one person might gradually morph into a picture of another person.
|Programming or Scripting-Based Animation|| Requires knowledge of a programming or scripting language.|
Example: Rollover or Mouseover
When the mouse is moved over an image, it changes to a different image so quickly that it looks as if the change has occurred in a single instant.
Created by using scripting
languages such as
|Rollovers|| Rollovers are extremely important for navigation buttons on user interface designs.|
Web pages ■ CBT programs
Kiosks ■ CD-ROM Training
Games ■ CDs and DVDs.
|Stop Motion Animation|| Process of manipulating real-world objects and photographing them one frame at a time.|
Very popular method with the film industry until computer generated imagery became possible.
Now used mainly in clay animation.
|Stage||The part of the animation program window where the animation's content is composed and manipulated.|
|Frame|| Frames hold the content that the movie displays or plays at that point in time. |
The number of frames determines the length of the animation.
The higher the number of frames, the longer the animation.
|Keyframe||Shows where the key (most important) actions occur.|
|Timeline|| The part of the animation program window that organizes and controls an animation's content over time using layers and frames. |
In video-editing software, where source clips, transitions, and audio files are arranged to create the video.
|Library||Stores frequently used graphics, movie clips, and buttons.|
|Playhead||Vertical red marker in the timeline that shows which frame is the current frame.|
|Scrubbing||Dragging the playhead across the timeline in order to preview the animation.|
|Tween(ing)||An animation process in which frames are created between the keyframes that are needed to create the illusion of movement.|
|Compression||The process of reducing the space required to store data by efficiently endcoding the content.|
|MP3||MP3 is a standard format for music files sent over the Internet that compresses music or other types of audio.|
|WAV|| The standard format for sound on computers running the Windows operating system.|
WAV files produce high-quality sound.
Generate large file sizes
|Executable File||A program file that can cause an application to run on your computer when it is opend.|
|Plug-in||A hardware or software application that adds a specific feature to a browser.|
|Standalone Player||A program that can work independently of a browser to play audio or video files.|
|Bandwidth||The amount of data that can be transmitted over a network in a given amount of time.|
|Streaming||A procedure for transmitting media files so they can start playing as soon as a computer begins receving them rather than waiting for the complete files to download first.|
|Streaming Rate||The rate in frames per second at which the movie is downloaded.|
|Playback rate||The rate in frames per second in which the movie plays.|