Apple Motion 3 User Manual
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Chapter 5
Using Behaviors
Parameters in the Inspector
Start Value: The value that’s added to the parameter at the first frame of the
Exponential behavior.
End Value: The value the Exponential behavior reaches at the last frame of the
behavior. Over the life of the behavior, the parameter the Exponential behavior is
applied to makes a transition from the Start Value to the End Value plus the original
value.
Start Offset: A slider that lets you delay the beginning of the behavior’s effect relative
to the first frame of its position in the Timeline. Adjust this parameter to make the
behavior start later. This parameter is in frames.
End Offset: A slider that lets you offset the end of the behavior’s effect relative to the
last frame of its position in the Timeline, in frames. Adjust this parameter to make the
behavior stop before the actual end of the behavior in the Timeline. Using this slider to
stop the effect, instead of trimming the end of the behavior in the Timeline, freezes the
end of the effect for the remaining duration of the object. Trimming the end of the
behavior resets the object to its original parameter.
Apply To: The Apply To (“Go”) pop-up menu shows the parameter being affected and
can be used to reassign the behavior to another parameter.
Related Behaviors
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Logarithmic
The Logarithmic parameter behavior is the inverse of the Exponential behavior. Like the
Exponential behavior, it creates more natural animations when scaling objects,
especially when using high values. The Logarithmic parameter behavior applies a
mathematical function to create a logarithmic curve (rather than linear) between the
two values—the effect ramps up quickly, and then the effect slows down. This allows
the animation to progress slowly when the scale values are small and speed up when
the scale values are large.
The Logarithmic behavior can be applied to parameters that have been animated with
behaviors or keyframes; however, it does not affect the parameter unless the Start
Values or End Values are nonzero.
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Tip: When applied to parameters other than Scale, the Logarithmic parameter behavior
creates more organic animations than other interpolation modes.
Note: You can also change the interpolation modes of keyframes to Logarithmic. For
more information, see “