5

Clamp
This behavior allows you to define a minimum and maximum value for an animated
parameter. In the following illustration, the center star has an applied Vortex behavior
that’s set to affect the two airplane shapes. As a result, the airplanes circle around the
center star, as indicated by the red animation path.
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. The
result is that the animation path is “clamped,” because the image can travel up to 230
pixels to the right but does not 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 field, the image moves past the 0 point.
Parameters in the Inspector
Clamp At: A pop-up menu in which you choose the option to clamp parameter values
at only the minimum, only the maximum, or both minimum and maximum.
423Chapter 9 Using Behaviors