The animation principle shown in the frame of a bouncing ball in the picture is the Squash and Stretch Principle. This principle is a fundamental aspect of animation aiming to give a sense of weight and flexibility to drawn objects. Below is how the principle applies to a bouncing ball:
- Squash: When the ball hits the ground, it appears to flatten out or compress. This provides the illusion of impact and helps convey that the ball has mass.
- Stretch: As the ball moves away from the ground, either accelerating downwards due to gravity or upwards from its bounce, it elongates or stretches in the direction of motion. This visual cue indicates speed and the material's elasticity.
This principle enhances the realism and expressiveness of the animation, allowing the audience to perceive the material and movement characteristics intuitively.