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416 Chapter 12: Animation
Setting Link Inher itance Options
Set the Inherit options to release the link
components between a selected object and its
parentforanyworldaxisofMove,Rotate,orScale.
The options that appear when you expand the
Inherit rollout are determined by the transform
controllers assigned to the selected object.
The Inherit rollout for objects using standard
position, rotation, and scale controllers contains
three groups: one each for Move, Rotate, and
Scale. Each group contains three options, one each
fortheX,Y,andZworldaxes.
• When turned on, transform information from
theparentispassedontothechildforthe
selected World axes.
• When turned off, transform information for
the selected axes is ignored by the child.
Imagine you are animating a Ferris wheel that
rotates on the world Y axis. The wheel is the parent
andthecarsareitschildren.Youwantthecarsto
ignore the Y axis rotation of the wheel. Otherwise,
thepassengerswouldallfallout.YouuseLinkInfo
to turn off the Y axis o ption on the Rotation group
of the Inherit rollout for each car.
Using the L ink Inher it ance Uti lit y
The Link Inher itance (page 2–416) utility works
exactly the same as the Inherit rollout in the Link
Info group on the Hierarch y panel, except that y ou
can set link inheritance for multiple objects in a
selection set.
Forexample,onaFerriswheel,youcouldselectall
of the cars and use the Link Inherita nce utility to
turn off Y axis rotation for all the cars at once.
Link Inher ita nce (S elected) Util ity
Utilities panel > Utilities rollout > More button > Util ities
dialog > Link Inheritance (Selected)
The Link Inheritance (Selected) utility constrains
the links between multiple objects in a select ion
set for any axis of position, rotation, or scale.
This utility works exactly the same as the
Inherit
rollout (page 2–482)
in the Link Info group box
in the
Hierarchy panel (page 3–816) ,exceptthat
it lets you adjust link inheritance for multiple
objects in a selection set, while the functions in the
Hierarchy panel work only on single objects.
Procedure
To pr event the inherita nce of X rotation in a
hiera rchy:
• Selectoneormoreobjects,andthenturnoffX
intheRotategroupoftheInheritrollout.
Interfa ce
XYZ—Tur n off any axis in the Move, Rotate, or
Scale groups to prevent inheritance.
When a box is turned on, transform information
from the parent is passed on to the selected objects
for the selected axis. When a box is turned off,
transform information on that axis is ignored by
the selected objects.