2009
IK group parameters
IK Blend can be set per key for any arm or leg track. The IK Blend setting
determines whether, at a particular key, an arm or leg is moving through it
using inverse kinematics, forward kinematics, or a blending of the two
kinematic solutions.
An IK Blend value of 0.0 means full forward kinematics. The arm (or leg) is
moved by interpolating the rotations of the joints at the keys. The hand (or
foot) tends to move along sweeping circular arcs in this case, and the motion
appears to be motivated by the apparent swinging at the joints.
An IK Blend value of 1.0 means full inverse kinematics with the hand (or foot)
being used as an end-effector. A spline path is computed through the keys of
the hand, and the hand moves along that spline. Joint angles for the rest of
the arm are computed to allow the hand to follow the spline. The motion, in
this case, appears to be directed by the hand (or foot).
An IK Blend value between 0.0 and 1.0 means a combination of inverse and
forward kinematics; when IK Blend is closer to 0.0, forward kinematics are
more heavily weighted in the solution, and when IK Blend is closer to 1.0,
inverse kinematics are more heavily weighted.
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