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Simulating Cartoon Style Animation Stephen Chenney, Mark Pingel, Rob Iverson, Marcin Szymanski

Simulating Cartoon Style Animation Stephen Chenney, Mark Pingel, Rob Iverson, Marcin Szymanski. Presented by: Andrea Tartaro. Squash and Stretch. Traditional animation example. Luxo, Jr. Squash and Stretch. Lasseter’s Principles of Animation. Squash and Stretch Timing Anticipation

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Simulating Cartoon Style Animation Stephen Chenney, Mark Pingel, Rob Iverson, Marcin Szymanski

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  1. Simulating Cartoon Style AnimationStephen 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 Stylistic deformation Ballistic motion simulator Collision detection mechanism

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

  7. Cartoon Physics Algorithm • Two modes: • Free-space • Collision • Update free space objects • Compute collision interpolation parameters • Update all objects involved in collisions

  8. Special Cases • Coming to reset • 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?

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