Data-driven character animation

Reading Assignment : 

Motion Graphs
Lucas Kovar, Michael Gleicher, and Frédéric Pighin
Proceedings of SIGGRAPH 2002

Three questions: (pick one and answer it in a one-page essay)

Please be sure to include your 2-digit class ID # on your essay.

1. What are the different classes of user for an animation system? Explain
briefly what kind of control system would be appropriate for each classes.

2. What are the pros and cons of physically-based animation and data-driven
animation techniques?

3. Is motion capture a general solution for animating any object? What are
the limitations?