5

Reversing, Locking, and Disabling Keyframes
You can reverse keyframes to reverse the corresponding animated effect without
re-animating it. Further, you can lock keyframes (individually or in groups) if you have a
complicated curve and you want to prevent further adjustment. Finally, you can disable
an entire curve to suspend animation for that parameter.
To reverse keyframes
1 In the graph area Keyframe Editor, drag a bounding box to select the keyframes to reverse.
2 Control-click a selected keyframe, then choose Reverse Keyframes from the shortcut
menu.
The keyframes are reversed.
To lock keyframes
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Select the keyframes to lock, then control-click a keyframe and choose Lock from the
shortcut menu.
Lock prevents further modification the keyframes.
Tip: You can also lock all keyframes in the Keyframe Editor by selecting “Lock keyframes
in time in Keyframe Editor” in the Time pane of Motion Preferences.
To disable a curve
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Select the keyframes to disable, then Control-click a keyframe and choose Disable from
the shortcut menu.
Disabled keyframes are ignored and have no effect on the object’s animation. If you
disable a keyframe, the curve readjusts itself as if that keyframe didn’t exist, even though
the keyframe is present in the Keyframe Editor, in a dimmed state.
Copying and Pasting Keyframes and Animation Curves
Keyframes and the animation curves they form can be moved from one parameter to
another using copy and paste commands. This technique can be useful for copying a
keyframe effect from one object to another, for moving a keyframe path earlier or later
in the same parameter, or for creating keyframes on one parameter and applying them
to another.
To copy keyframes, select the keyframes you want to copy, individually or as an entire
curve.
To select keyframes
Do one of the following:
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Using the Edit Keyframes tool, drag a selection box in the graph area around the keyframes
to select.
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Shift-click the keyframes you want to select.
After you select the keyframes, cut or copy them to move them to the Clipboard.
612 Chapter 12 Keyframes and Curves