John Lasseter of Pixar discusses the principles of traditional 2D hand-drawn animation and their application to 3D computer animation. He emphasizes that animation, though simple in concept, is challenging to execute well. The paper outlines the fundamental principles of traditional animation and how they apply to 3D keyframe animation. These principles include squash and stretch, timing, anticipation, staging, follow through and overlapping action, straight ahead and pose-to-pose action, slow in and out, arcs, exaggeration, secondary action, and appeal. These principles are essential for creating high-quality computer animation. Squash and stretch define the rigidity and mass of an object during an action. Timing determines the speed and weight of an object, affecting the audience's perception. Anticipation prepares the audience for an action, while staging ensures an idea is clearly presented. Follow through and overlapping action show the termination of an action and its relationship to the next. Straight ahead and pose-to-pose action are two contrasting approaches to movement. Slow in and out control the spacing of inbetween frames for subtle timing. Arcs describe the visual path of action for natural movement. Exaggeration enhances the essence of an idea, and secondary action adds realism. Appeal creates a design or action that the audience enjoys. These principles are crucial for both 2D and 3D animation, ensuring quality and realism. The paper concludes that understanding these principles is vital for producing good computer animation and that they are as important as the tools used.John Lasseter of Pixar discusses the principles of traditional 2D hand-drawn animation and their application to 3D computer animation. He emphasizes that animation, though simple in concept, is challenging to execute well. The paper outlines the fundamental principles of traditional animation and how they apply to 3D keyframe animation. These principles include squash and stretch, timing, anticipation, staging, follow through and overlapping action, straight ahead and pose-to-pose action, slow in and out, arcs, exaggeration, secondary action, and appeal. These principles are essential for creating high-quality computer animation. Squash and stretch define the rigidity and mass of an object during an action. Timing determines the speed and weight of an object, affecting the audience's perception. Anticipation prepares the audience for an action, while staging ensures an idea is clearly presented. Follow through and overlapping action show the termination of an action and its relationship to the next. Straight ahead and pose-to-pose action are two contrasting approaches to movement. Slow in and out control the spacing of inbetween frames for subtle timing. Arcs describe the visual path of action for natural movement. Exaggeration enhances the essence of an idea, and secondary action adds realism. Appeal creates a design or action that the audience enjoys. These principles are crucial for both 2D and 3D animation, ensuring quality and realism. The paper concludes that understanding these principles is vital for producing good computer animation and that they are as important as the tools used.