2009

Bone Joints group
Pick Start Joint Picks the start joint for the Spline IK Solver and displays the
object name.
Pick End Joint Picks the end joint for the Spline IK Solver and displays the
object name.
IK Solver Properties rollout
The options on this rollout set the start and end twist angles for the spline IK
chain. The twist manipulators on each end of the chain show the degree of
twist.
Twist Start Angle Sets the twist angle for the entire chain, rotating all bones
in the chain.
Twist End Angle Sets the twist angle for the end joint relative to the start
joint, creating a gradual twist over the entire chain.
Pick Upnode When Spline IK is assigned to a bone chain, the IK system
attempts to determine the “up” direction for bones, which is the direction in
which the bones' back fins should point. The Spline IK Solver might interpret
this direction incorrectly, causing bones to flip to one side or the other. Picking
an upnode causes the “up” direction to point along the picked object's local
Z axis. By default, the upnode is set to the first helper/knot on the spline,
which usually causes the “up” direction to be interpreted correctly.
Use Use the picked node to specify the “up” direction for the root bone.
IK Display Options rollout
The options on this rollout set the display of twist manipulators and the IK
chain object.
Inverse Kinematics (IK) | 3457