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490 Chapter 12: Animation

Procedure

To scale a parent without scaling the children:

Select the p arent object in a hierarchy.

2. On the Hierarchy panel click the Pivot button

if it’s not already on, then on the Adjust

Transformrollout,clickDon’tAffectChildren.

3. Scale the parent object.

Thechildrenwillremainunaffected.

Tip: Never use non-uniform scale at the object

level for objects in a hierarchical chain. Always

go to the sub-object level when you do a

non-uniform scale on hierarchically linked

objects.

To reinitialize the scale of an object:

Select an object.

2. IntheAdjustTransformrollout>Resetgroup,

click Scale.

The XYZ values are re-initialized to 100%.

ThisoperationwillpreventNonUniformScale

inheritanceifachildobjectislinkedtothis

object.

Inter face

Move/Rotate/Scale group

Don’ t A ffect Children—Limits t ransforms to the

selected object and its axis, not to its children.

This is very useful when working with bones and

other hierarchies. If you need to make a particular

bone or object longer or shorter, select the object

andthenturnonDon’tAffectChildren.Youcan

readjust it and any parent objects in the hierarchy

willstretchorshrinktocompensatetothenew

dimension of the selected bone.

Reset group

Tra nsf orm—Resets the orientation of an objects

local axis coordinates to alig n with the world

coordinate system, regardless of the current

orientation of t he object.

This does not affect descendants.

When applied to closed groups, it aligns the

dummy node of the parent, but keeps the children

in the same place. It reorients and resizes the

dummy node to correctly bind the children of the

group.

Scale—Resets the scale values in the tr ansformation

matrix to reflect t he new scale of the object. There

is no visual change in the object.

YoucanusetheScaletocorrectNonUniform

Scale inheritance problems. If Non Uniform Scale

is inherited by a child object in a hierar chy, it can

result in an undesirable deformation in the child

object. To correct for this, use Reset: Scale in

theAdjustTransformrolloutonanobjectbefore

linking.

You can view the scale va lues of the transformation

matrix of a selected object. On the toolbar, turn

on Scale, then right-click any of the three toolbar

Transform buttons (Move, Rotate, or Scale).

There is also a Reset XForm utility (page 1–438) to

dothesametasks.