Apple Motion 4 User Manual
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• Add Keyframe: Adds a keyframe at the current frame in the mini-Timeline. If the playhead
is positioned on a frame where a keyframe has already been added, this command is
unavailable.
Note: As mentioned in the Animation menu section, you can use a keyboard shortcut
to quickly add a keyframe by pressing Control-K. A keyframe is automatically added to
the last modified parameter of the object.
• Delete Keyframe: Deletes the current keyframe. The Delete keyframe command is
available only if the playhead is positioned on a frame where a keyframe already exists.
• Previous Keyframe: Moves the playhead to the previous keyframe for this parameter.
The Previous Keyframe command is available only if a keyframe exists earlier in the
project.
• Next Keyframe: Moves the playhead to the next keyframe for this parameter. The Next
Keyframe command is available only if a keyframe exists later in the project.
• Interpolation: Sets the type of curve for the parameter. See the table in the
section later in this chapter for examples of the different interpolation methods.
Choose from Constant, Linear, Bezier, Continuous, Ease In, Ease Out, Exponential, or
Logarithmic.
• Before First Keyframe: Defines what happens between the first keyframe and the
beginning of the clip. See the table in the
section later in this chapter for
examples of the different extrapolation methods. Choose from Constant, Linear, Ping
Pong, Repeat, or Progressive. You can also turn the extrapolation into actual keyframes
by choosing Generate Keyframes.
• After Last Keyframe: Defines what happens between the last keyframe and the end of
the clip. See the table in the
section later in this chapter for examples of
the different extrapolation methods. Choose from Constant, Linear, Ping Pong, Repeat,
or Progressive. You can also turn the extrapolation into actual keyframes by choosing
Generate Keyframes.
• Lock/Unlock Parameter: Locks this parameter from further changes. When a parameter
is locked, neither keyframes nor curves are adjustable.
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Chapter 10
Keyframes and Curves