Questions

1. If the first pose of our walk cycle is keyed on frame 0, why should our playback range not also begin at frame 0?
2. What makes the number 24 so important?
3. In a normal walk cycle, why would we choose to use FK bones for the arms and IK bones for the feet? Can you think of animations for which the reverse would be needed?
4. What makes the Y Location F-curves so special for those first three bones we keyed?
5. What determines the period of an F-curve?
6. Most F-curves in our walk cycle needed a period of 24 frames, but at least one had a period of 12 frames. Which one, and why?
7. After pasting keyframes to the bones of the right foot, you moved them 12 frames left or right in the animation editor. Why did the direction not matter in this case?
8. In some other character rigs, the IK feet have an additional function called “toe roll”. What would you guess this does?
9. What makes a walking character like a unicycle?