2009

The 200% scale has been absorbed by the sphere as its original state. The
sphere has a true radius of 40 units, Creation Parameters report a radius
of 20 units, and absolute local scale is 100%.
The sphere's child object accepts a local scale of 200% so it does not
change in size.
Resetting the scale of an object can lead to confusion because the object's true
size, absolute local scale, and creation parameters no longer match up.
Using the Reset Transform Utility
You can also reset the orientation and scale of an object by clicking
Reset
XForm
on page 957 on the Utilities panel on page 7671. Reset XForm takes the
rotation and scale transforms of an object and places them in an XForm
modifier on the modifier stack.
Consider the same sphere as before with a radius of 20 units and a linked child
object:
1 Use Uniform Scale to scale the sphere to 200%. The sphere and its child
become twice as big. The Scale Transform Type-In reports an Absolute
Local scale of 200% and Creation Parameters report a radius of 20 units.
The true radius of the sphere is 200% of 20 units, or 40 units.
2 Select the sphere and click Reset XForm. The sphere remains the same
size but its child reverts to its original size and position. Here's what has
happened:
The 200% scale has been placed in an XForm modifier on the sphere's
modifier stack. The sphere has a true radius of 40 units, Creation
Parameters report a radius of 20 units, and absolute local scale is 100%.
The sphere's child object now sees only the 100% local scale so it reverts
to its original size and position.
Locking Object Transforms
You can lock an object’s ability to move, rotate, or scale about any of its local
axes by selecting objects and then setting options on the
Locks on page 3501
rollout of the Hierarchy panel.
Enabling and disabling Local transform axes is also referred to as setting degrees
of freedom (DoF) for an object. If an axis is enabled, an object is free to
transform about that Local axis.
Animating with Forward Kinematics | 3369