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474 Chapter 12: Animation
Procedure
To create a ter minator in any hierarchy or HD IK
chain:
1.
Select an object in any hierarchy or HD IK
chain that you want to be the terminator.
2. In the Object Parameters rollout, turn on
Te r m i n a t or.
The terminated objects will not m ove when you
use Interac tive, Applied, or HD IK animation.
Inter face
Terminator—SetsthebaseofanIKchain
by defining one or more selected objects as
terminators.
Turn on Terminator to stop calculation of the
kinematic chain before it reaches the root object
of the hierarchy. A terminator object stops
calculation at the terminator’s child object; the
terminator itself is not affected by the IK solution.
This gives you very precise control over the
behavior of the kinematic chain.
Position/Orientation/B ind to
Foll o w O b je ct ( HD Solv e r)
Make a selection with an HD Solver applied. >
Hierarchy panel > IK > Object Parameters rollout >
Position/Orientation/Bind to Follow Object groups
Use the controls in these group boxes to bind
objectsinaHDIKchaintotheworldortofollow
objects. Use the various options to modify the
behavior of the bindings.
Use weighted and axis-specific binding controls
to create different weights for each binding, and
to specif y which axes the bound follow object
influences. Use the R (Relative) buttons to
establish a relative offset with Bind Position and
Bind Orientation.
Binding an Object to the World
Binds an object to the world if you want the object
to hold its position and orientation as long as
possible during IK operations.
B inding a n Object to a Follow Object
Binds a selected object in your IK chain to any
other object that is not a descendant of the selected
object. This other object is called the follow object.
Procedures
To bi nd a n object to the wor ld:
1.
Select the object to be bound.
2. Click IK in the Hierarchy panel and expand the
Object Parameters rollout.
3. Select one or both of the Bind boxes.
• TurnonBindPositiontocausetheobjectto
attempt to maintain its current location.
• TurnonBindOrientationtocausethe
object to attempt to maintain its current
orientation.
To bind an object to a follow object:
1.
Turn o n Bind and s ele c t the o bje c t in a
kinematic chain to be bound.
Moving your mouse over an acceptable target
will change the cursor to a push-pin icon.
2. Drag to the follow object and release.
3. Turn on Bind Orientation if you want the
bound object to match the rotation of the follow
object. Bind Position is automatically selected.
Turn of f a n axis (A xis : X YZ). T h e s pec ified a xis
is no longer influenced by the follow object or
the New IK Position end effector.