9

564 Chapter 12: Animation
Procedure
To use S elect K ey s B y T ime:
1.
In the C ontroller window, highlight the tracks
you want to work with.
2. On the Utilities menu choose >Track View
Utilities, then choose the Select Keys By Time
utility from the Track View Utilities dialog.
3. Set a range and click OK.
• Keys within t he range in the highlighted
tracks are selected.
• If you select Clear Previous Selection, all
keys are cleared before the keys within the
time range are selected.
• In Dope Sheet, h ighlight a sing le track to
select all keys in t he descendants of the tr ack.
Inter face
Start Time—Specifies the st art range for selecting
keys.
End T ime—Specifies the end range for selecting
keys.
The Star t Time and End Time spinners are
activated to match the current time selection.
Clear Pr evi ous Sel ection—Clears all keys before
keys within the spe cified time range are selected.
In Dope Sheet mode, highlight a single t r ack to
select al l keys in the descendants of the track.
ModifySubtreemustbeonforthistowork.
Euler Filter
Track View > Utilities menu > Track View Utilities > Euler
Filter
This Track View utilit y cor rects for gimbal flipping
(anomalous rotat ion animation) in objects
animated using Euler rotation (page 2–318) by
processing existing animation keys in selected
animated tracks. It’s particularly useful for
cleaning up rotation artifacts when importing ra w
motion-capture data. This process does not break
any keyed orientations.
By default, t he utility modifies only frames with
keysonallthreetracks(X,Y,andZ).Byturning
on Add Keys If Needed, you can perform the
correct ion on frames with X, Y, and Z keys and
also add keys at frames that contain only one or
two keyed axes but require correction, resulting in
X, Y, and Z keys at those frames.
Thedefaultrangeforfilteringisthecurrentactive
range for the scene, which automatically appears
in the utility. To isolate the operation to a specific
subsetoftheanimation,changetheStartTimeand
End Time settings. Any changes made to the utility
remain active during the current 3ds Max session.
Tip: TheutilityworksinDopeSheetmode,butit’s
much easier to see what it’s doing if you use Curve
Editor mode.
Procedure
To use Euler Filter :
1.
Select an object animated with Euler rotation
(page 2–318).
2. Right-click the object, and from the quad menu
choose Curve Editor.
Track View opens in Curve Editor mode, with
the animated tracks highlighted.
3. Make sure the rotation tracks to be filtered are
highlighted in Track View.