5.1.1

Chapter 9 Behaviors 333
Average
The Average behavior smoothes the transition from one value to another in animations that
are keyframed and in behaviors that are applied to a parameter. Use the Average behavior to
smooth out animated eects. Averaged motion moves more uidly, while averaged changes to
parameters such as Opacity and to lter parameters appear to happen more gradually. Use the
Window Size parameter to adjust the amount by which to smooth the aected parameter.
Tip: The Average behavior can be used to smooth out the sequence of values generated by a
Randomize behavior.
Parameters in the Inspector
•
Window Size: A slider that adjusts the amount of smoothing applied to the aected parameter,
by specifying the number of adjacent frames to average together. Higher values apply more
smoothing by averaging a wider range of values, resulting in more uid animation. Lower
values average a narrower range of values, resulting in less smoothing, with values closer to
the original.
•
Apply To: A pop-up menu that displays the parameter aected and can be used to reassign the
behavior to another parameter.
Clamp
The Clamp behavior sets a minimum and maximum value for an animated parameter. In the
following illustration, the center star has an applied Vortex behavior set to aect the two
airplane shapes. As a result, the airplanes circle around the center star, as indicated by the red
animation paths.
In the following illustration, a Clamp behavior is applied to the X Position parameter of the
outer airplane shape. The Max value is set to 230 and the Min value is set to 0. As a result, the
animation path is “clamped”—the image can travel 230 pixels to the right but cannot move left
past the 0 point, creating a half-circle animation.
The circle motion path is essentially cut in half. If a negative value is entered in the Min value
slider, the image moves past the 0 point.
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