12 Principles of Computer Animation Amy Gooch AA3: Animation.

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Presentation transcript:

12 Principles of Computer Animation Amy Gooch AA3: Animation

Copyright "Illusion of Life: Disney Animation" by Ollie Frank/Johnson Thomas

12 Principles of Animation Created by Disney Studios in 1930s –Snow White (1937) –Pinocchio & Fantastia (1940) –Dumbo (1941) –Bambi (1942)

Really about… Performance –Directing Performance –Representing reality –Interpreting real world physics –Editing sequence of actions

Squash and stretch Copyright "Illusion of Life: Disney Animation" by Ollie Frank/Johnson Thomas

Squash and stretch Copyright ©1999 Michael B. Comet All Rights Reserved. Copyright "Illusion of Life: Disney Animation" by Ollie Frank/Johnson Thomas

Anticipation Top: move simply Bottom: anticipates motion before moving, broadcasting what is about to happen Copyright ©1999 Michael B. Comet All Rights Reserved.Copyright "Illusion of Life: Disney Animation" by Ollie Frank/Johnson Thomas

Anticipation Bad Jump: no anticipation Good Jump: crouch first, then jump Copyright ©1999 Michael B. Comet All Rights Reserved.

Staging Copyright "Illusion of Life: Disney Animation" by Ollie Frank/Johnson Thomas

Staging Bad SilhouetteGood Silhouette Copyright ©1999 Michael B. Comet All Rights Reserved.

Two Animation Techniques for Action Pose-to-Pose Straight-ahead (Ex: Ryan by Chris Landreth) Copyright "Illusion of Life: Disney Animation" by Ollie Frank/Johnson Thomas

Action, pt 2 Follow-thru Action Overlapping Action Copyright "Illusion of Life: Disney Animation" by Ollie Frank/Johnson Thomas

Follow-thru Action Balls Top: No Follow thru Bottom: Follow thru Arm Rotates with follow thru Hand continues past stop position, then falls back in place Copyright ©1999 Michael B. Comet All Rights Reserved.

Follow-thru Action Watch the antenas Copyright ©1999 Michael B. Comet All Rights Reserved.

Movement: Slow-in and Slow-out The ball in the right eases in/out at the top; looks smoother and more natural The ball on the left moves at a constant speed; looks abrupt Copyright ©1999 Michael B. Comet All Rights Reserved.

Movement: Slow-in and Slow-out Good, with ease More natural, fluid Bad, No ease Very Robotic Copyright ©1999 Michael B. Comet All Rights Reserved.

Movement: Arcs Copyright "Illusion of Life: Disney Animation" by Ollie Frank/Johnson Thomas

Arcs Bad, Linear ballGood, Arc ball Copyright ©1999 Michael B. Comet All Rights Reserved.

Arcs: Head Turn Bad, LinearGood, Arc Copyright ©1999 Michael B. Comet All Rights Reserved.

Secondary Action Copyright "Illusion of Life: Disney Animation" by Ollie Frank/Johnson Thomas

Timing

Timing Head Turn 60 Frame –Looks like stretch 30 Frame –Looks like “no no no” 5 Frame –Looks like he got hit Copyright ©1999 Michael B. Comet All Rights Reserved.

Exaggeration Bad Good Copyright ©1999 Michael B. Comet All Rights Reserved.

Solid modeling and rigging (solid drawing in 1930s) Copyright "Illusion of Life: Disney Animation" by Ollie Frank/Johnson Thomas

Character Personality

12 Principles of Animation Squash and Stretch Anticipation Staging Follow-thru and Overlapping Action Straight-ahead and Pose-to-Pose Slow-in and Slow-out Arcs Secondary Action Timing Exaggeration Solid Modeling and Rigging Character Personality

A few more…

Visual Styling

Blend Motion Cartoon physics Realistic cartoon Realistic human Rotoscoping

Cinematography Lighting Composition Squencing

Facial animation More subtle controls in CG Decide early on level of control

User-controlled animation Games allow user intervention Built-in anticipation Branch smoothly between action shots

Animation Examples Siggraph 2004 DVD

Credits /prin_trad_anim.htmhttp:// /prin_trad_anim.htm Kerlow’s Book Jessica Hodgin’s Notes (animations)