9

IK Solver Properties Rollout (HI Solver) 457
Swivel angle manipulator.
Whenyoumovethemouseoverthemanipulator,
it turns red. At this point, you can drag the
manipulator to change the swivel angle. The Auto
Key button can be active while you do this.
You can also animate the swivel angle by using a
target object. Pick an objec t for the t arget, then
animating the object will animate the swivel angle.
The swivel angle manipulator is a standard plane
angle manipulator (page 2–29). The HI Solver has
itsowncontrolsfordisplayingthismanipulator.
These are on the IK Display Options rollout (page
2–458).
Procedure
To i ncrease the precis ion o f an IK solu tion:
1.
SelectthegoalinanHIIKchain.
2. In the IK Solver Properties rollout increase the
Iterations to 200 in the solutions group.
3. Play or render the animation.
4. You can also adjust the Position and Rotation
Thresholds to a smaller value.
Interfa ce
IK Solver Plane group
Swivel Angle—Controls the Solver Plane which
determinesthedirectionofthekneeorelbowina
humanlimb.TheSwivelAnglecanbemanipulated
in the viewport by turning on Swivel Angle Display
in the Display Options rollout, and then turning
on Manipulate Mode. When the swivel ang le
manipulat or is displayed in the viewport, you can
interactively animate the handle to animate the
solver plane.
Pick Tar get—L ets you select a n other object to use
to animate the Swivel Angle.
Use—Turns the use of the Target on and off.
Paren t Spa ce—Defines what space the Swivel Angle
is relative to. Use this on chains with multiple
solvers, so the swivel a ngle manipulations on
onechainwillnotaffectthesecond.Formore