9

574 Chapter 12: Animation
2.
On the Track View toolbar, click Modify
Subtree.
3. In the Track View Key window, drag an Object
rangebarortheWorldrangebar.
With Modify Subtree on, a range bar displays
in the Objects track. The Objects branch is the
defaultparentofallobjectsinthescene.
Dragging a parent-object range bar with
Modify Subtree on affects al l tr acks subordinate
totheobjectandalltracksofallofitslinked
descendants.
Posi tion R a nges
Track View > Dope Sheet > Ranges: D ope Sheet toolbar >
Position Ranges
Position Ranges mode allows you to position range
bars independently from their associated keys and
produce special effects.
The process of adjusting a range bar independent
ofitskeysiscalleddecoupling the range.
Po sitioning a range bar so it matches the first to
last keys of a track is called recoupling the range.
Note: The Ranges: Dope Sheet toolbar doesn’t
appear in Track View by default. To open it,
right-click an empty area adjacent to the D ope
Sheet toolbar and choose Show Toolbars > R anges:
Dope Sheet. Save your layout after you do.
Decouple a R ange B ar
Youdecouplearangebarfortworeasons:
• You want some keys at the start or end of an
animation range not to take effect.
Keys outside of the range bar are ignored
during animation playback. The keys outside
the range st ill affect interpolated values inside
therange,buttheappliedOut-of-Rangetypeis
usedtoanimatetimeoutsidetherangebar.
• You want to add extra time before the first key
or after the last key that is not affected by the
applied Out-of-Range type.
Timebeyondthefirstorlastkeyofthetrack,
but still w ithin the range, uses the constant
value of the nearest key within the range.
Procedure
To decouple a range bar from its keys:
1.
Right-click an empty area adjacent to the Dope
Sheet toolbar and choose Show Toolbars >
Ranges: Dope Sheet.
2. On the Track View toolbar, click P osition
Ranges.
3. In the Track View Key window, drag the entire
range bar left or right of the keys, or drag either
end of the range bar to make it longer or shorter
than the keys.
Using Out-of -Range types (page 2–551) in
conjunction with this procedure allows you
to change the behavior of an animated loop.
Positioning either end of a range bar changes
the loop.
Recouple Ranges
Track View > Dope Sheet > Ranges: Dope Sheet toolbar >
Recouple Ra nges
Recouple Ranges resizes the range bar so that the
beginning and end of the r ange matches the first
and last keys in the track. This is useful to quickly
realign the range and the keys after editing.
Note: The Ranges: Dope Sheet toolbar doesn’t
appear in Track View by default. To open it,
right-click an empty area adjacent to the Dope