2009

If you change the animation of the second hand at frame 75, it affects the
position of the hand relative to the ball at the time of the link (frame 50). This
change in relative position affects the ball over all frames where it is linked
to the second hand. Therefore, as you change the position of the hand at
frame 75, the child's position will also change, possibly in a counter-intuitive
way. However, when playing back the animation the above three rules will
hold true.
Adjusting Object Transforms
You use the features on the
Adjust Transform on page 3483 rollout to transform
objects after they have been linked without transforming descendents, and
to reset an object's transform.
Transforming Parent Objects
You might discover, after linking a number of objects, that you need to move,
rotate, or scale a parent object but you do not want to affect the object's
descendents. You can transform a parent object without affecting its
descendents by clicking Don't Affect Children on the Adjust Transform rollout
of the Hierarchy panel.
Resetting an Object's Orientation and Scale
Click the Transform button in the Reset group to rotate an object's pivot to
match its parent's local coordinate system. Descendents of the object are not
affected.
Resetting an Object's Scale Only
Click the Scale button in the Reset group to set the current scale value as the
selected object's base scale value. All following scale transforms are then applied
using the base scale value as an absolute local scale of 100%.
Consider a sphere 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. Scale Transform Type-In reports an Absolute Local
Scale of 200% and the object's 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 Scale. The sphere and its child remain
the same size. Here's what has happened:
3368 | Chapter 15 Animation