Apple Motion 4 - Manual (Page 117)

• Animation menu (not labeled): The last column contains a pop-up menu to control
animation and keyframing attributes for that parameter. The menu contains the
following items:
• Enable/Disable Animation: Remains unavailable until keyframing is applied to the
parameter, either by using the Record button or by directly adding a keyframe. Once
the parameter is animated, the menu item is automatically renamed to Disable
Animation. Activating it at that point hides the keyframes you have set, restoring the
parameter to its default value. However, the keyframes are not thrown away. Choosing
Enable Animation restores the parameter to its last keyframed state.
• Reset Parameter: Removes all keyframes and settings for this parameter. The parameter
value is restored to its default value.
• Add Keyframe: Adds a keyframe at the current frame. If your playhead is positioned
on a frame where a keyframe has already been added, this menu item is unavailable.
To add a keyframe, you can also Option-click the Animation menu. A keyframe is
automatically added to the last modified parameter of the object (regardless of the
status of the Record button) at the current playhead position.
• Delete Keyframe: Deletes the current keyframe. The Delete Keyframe command is
only available if the playhead is positioned on a frame where a keyframe already
exists. You can also Control-click a keyframe and choose Delete from the shortcut
menu, or select the keyframe and press Delete.
• Previous Keyframe: Moves the playhead to the previous keyframe for this parameter.
The Previous Keyframe command is only available if a keyframe exists earlier in the
project. You can also press Option-K to advance to the next keyframe.
• Next Keyframe: Moves the playhead to the next keyframe for this parameter. The
Next Keyframe command is only available if a keyframe exists later in the project.
You can also press Shift-K to advance to the next keyframe.
• Interpolation: Sets the type of curve for the parameter. See the table in Modifying
Curves for examples of the different interpolation methods.
• Before First Keyframe: Defines the animation before the first keyframe of a parameter.
This is called extrapolation. For examples of the different extrapolation methods, see
Extrapolation .
• After Last Keyframe: Defines the animation after the last keyframe of a parameter.
This is called extrapolation. For examples of the different extrapolation methods, see
Extrapolation .
• Lock/Unlock Parameter: Locks the parameter to prevent changes. When a parameter
is locked, neither keyframes nor curves are adjustable.
117 Chapter 2 The Motion Interface