2009

Selecting Hierarchy Members:Ancestors and Descendants
Once you have selected one or more objects in a hierarchy, you can select its
direct ancestor or descendant with the Page Up and Page Down keys.
■ Page Up deselects the object and selects the object’s parent.
■ Page Down deselects the object and selects all its immediate children, but
not all descendants down the chain.
TIP These navigation commands are particularly useful when setting joint
parameters for inverse kinematics.
To select an object and all of its descendants, you can:
■ Double-click the object in a viewport.
■ Double-click the object icon in the Track View Hierarchy list on page 3531.
Selecting Hierarchy Members: Siblings
Available in
Customize User Interface on page 7697 are the actions Select Sibling
- Next and Select Sibling - Previous, which appear in the Main UI group and
All Commands category. You can assign them as hotkeys, toolbar buttons,
etc. We recommend assigning them to the cursor keys Right Arrow and Left
Arrow, respectively; by default, those keys are not assigned keyboard shortcuts.
Using one of these commands replaces the current selection with one object
only at the same hierarchical level. More precisely, a sibling is defined in this
context as an object of equal generational distance from the selected object's
nearest parent. All objects that fit this definition are siblings, so that in
asymmetrical hierarchies, object A can be a sibling of object B, but the reverse
is not necessarily the case.
3352 | Chapter 15 Animation