Arcs

Natural action tends to follow arcs. For greater realism it is essential animation adheres to these principles. Speed and momentum affect the shape of the arc. For example if a ball is thrown at speed the arc will be boarder than if it were thrown lightly.

Pendulum Swing Animation

All characters limbs are affected by arcs because they are attached to a pivot, the exception being machinery which tends to move in straight lines. By including arcs the animation becomes more lifelike in the example below Pixar have given the lamp human characteristics by incorporating arcs into the movement.

Pixar - Luxo Jr.

Written By Ali Kerwood