Computer Science 1033A/B Study Guide - Final Guide: Adobe Animate, Frame Rate, Web Browser

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ANIMATION: a drawing that moves, bringing the drawing to “life”
Rely on “moving images” for effective communication
Used for: entertainment (action, realism), Education (visualization, demonstration)
Why use animation?
Indicate movement
Illustrate change over time
Visualize 3D objects
Attract attention
Simulation of movement through a series of pictures that have objects in slightly different
Each drawing is called a FRAME: snapshot of what is happening at a particular moment (FPS:
frames per second)
Movies on film 24 fps
TV 30 fps
9000 frames for five minute cartoon computer animation, “jerky” anything less
In animation, each frame overlaps the previous one
Movement is caused by: rapidly displaying each frame in sequence
Types of Animation
Computer-based training programs: the way something works (assembling parts,
Education: teach applied and hands on skills (spelling, exam prep, learning instruments,
Games: playstation, nintento, xbox...
Web: animated buttons, banners, text, characters, etc
Two types of animation 2-D Animation (cel/path) 3-D animation
2-D Animation: Cel-Based
Cel” (Celluloid): clear sheet material on which images were drawn by movie
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Images placed on a stationary background background remains fixed
Object changes from frame to frame
Ex: toonz software
2-D Animation: Path-based
Moves object along predetermined path on screen
Path: straight or any curves
Often object does not change (but resized or rotated)
Path animation easier to create than cel based animation
Specify beginning and end position
TWEENING: fills in intervening frames
Ex: powerpoint, flash, 3Dplus
Animation software features:
Frame rate: speed of the animation
Transitions: special effects (fade in, fade outs)
User control: play back, how many times to run
Looping: plays continuously until user stops it
3-D Animation: involves 3 steps: Modeling, Animating, Rendering
Modeling: defining the objects 3D shape process of creating broad contours
and structure of 3D objects and scenes (draw views top, side, cross section)
Animating: process of defining object‟s motion – defining lighting and
perspective views to create change during animation
Rendering: give objects attributes colour, amounts of transparency, surface
RAY TRACING: technique of adding light and shadows to a 3D image
Special effects
Morphing: process of blending together two images into a series of images
useful for showing how image might change over time
Warping: distorts a single image warp frown into smile
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