2009

1 and 2 each represent the root of the characters.
Both structures are suitable for forward kinematics.
The structure on the right is best for most inverse kinematics.
The figure above shows two approaches to linking a skeletal structure. Either
structure is suitable for working with forward kinematics. The structure on
the right, however, is a better choice for working with inverse kinematics.
■ The root object is located near the body’s center of mass.
■ The link order more closely simulates the connections of a real body.
3338 | Chapter 15 Animation