Apple Motion 5.1.1 - Manual (Page 339)

Chapter 9 Behaviors 339
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Clamp Source Value Within Range: A checkbox that becomes available when the Apply Link
pop-up menu is set to a choice requiring a minimum or maximum value. When selected,
values that exceed the defined range are pinned to the highest or lowest allowable setting.
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(Parameter) offset: A slider that lets you create a constant offset between the source parameter
value and the value applied to the target parameter.
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(Parameter) min: One or more sliders that become available when the Apply Link When pop-up
menu is set to “Source value above minimum,” “Source value between min and max,” or
“Source value outside min and max.” A “min” slider appears for each component of the source
parameter. Adjusting this slider defines a minimum value to limit when the link behavior
is active.
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(Parameter) max: One or more sliders that become available when the Apply Link When
pop-up menu is set to “Source value below maximum,” “Source value between min and
max,” or “Source value outside min and max.” A “max” slider appears for each component of
the source parameter. Adjusting this slider defines a maximum value to limit when the link
behavior is active.
Logarithmic
The Logarithmic 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. When applied to parameters other
than Scale, the Logarithmic parameter behavior creates more organic animations than other
interpolation modes.
The Logarithmic behavior can be applied to parameters animated with behaviors or keyframes;
however, Logarithmic does not affect the parameter unless the Start Values or End Values
are nonzero.
Note: You can also change the interpolation modes of keyframes to Logarithmic. For more
information, see
Set curve interpolation on page 474.
Parameters in the Inspector
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Start Value: A slider that sets the value added to the parameter at the first frame of the
Logarithmic behavior.
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End Value: A slider that sets the value of the Logarithmic behavior at the last frame. Over
the life of the behavior, the parameter that the Logarithmic behavior is applied to makes a
transition from the Start Value to the End Value, plus the original value.
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Start Offset: A slider that delays the beginning of the behavior’s effect relative to the first frame
of its position in the Timeline, in frames. Adjust this parameter to make the behavior start later.
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End Offset: A slider that offsets 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.
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Apply To: A pop-up menu that shows the parameter affected and can be used to reassign the
behavior to another parameter.
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