1. Simulating Cartoon Style Animation Stephen Chenney, Mark Pingel, Rob Iverson, Marcin Szymanski Presented by: Andrea Tartaro

2. Squash and Stretch Traditional animation example

3. Luxo, Jr. Squash and Stretch

4. Lasseter’s Principles of Animation +Squash and Stretch +Timing +Anticipation +Staging +Follow through and overlapping action +Straight ahead action and pose-to-pose action +Slow in and out +Arcs +Exaggeration +Secondary Action +Appeal =Personality

5. The System Ballistic motion simulator Collision detection mechanism Stylistic deformation

6. Cartoon Simulation Gravity Restitution (lost “energy”) Max Stretch Min Squash Stretch Rate Squash Rate

7. Cartoon Physics Algorithm Two modes: –Free-space –Collision 1)Update free space objects 2)Compute collision interpolation parameters 3)Update all objects involved in collisions

8. Special Cases 1.Coming to reset 2.Simultaneous collisions

9. Limitations Only convex polygonal models Only one moving object Collision must be between one deformable object and a fixed object

10. Applications Interactive Entertainment/ Games Animation interfaces for novices Aids to traditional animation Storyboarding animation?