5

Parameters in the Inspector
Start Value: The value that’s added to the parameter at the first frame of the Ramp
behavior.
End Value: The value the Ramp behavior reaches at the last frame of the behavior. Over
the life of the behavior, the parameter the Ramp behavior is applied to makes a transition
from the Start Value to the End Value, plus the original value.
Curvature: This parameter lets you ease the acceleration with which the Ramp behavior
transitions from the Start Value to the End Value. Higher Curvature values result in an
ease in/ease out effect, where the value slowly begins the transition, gradually speeds
up as the behavior continues, then gradually slows down to a stop as it reaches the end.
Because Curvature is defined by the length of the behavior in the Timeline, it does not
affect the overall duration of the effect.
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. The units of this parameter are 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 pop-up menu shows the parameter affected and can be used
to reassign the behavior to another parameter.
HUD Controls
The HUD lets you adjust the Ramp’s Start Value, End Value, and Curvature parameters,
as well as change the parameter assignment.
Related Behaviors
• Oscillate
• Rate
Randomize
Creates a continuous sequence of randomly increasing and decreasing values, based on
the parameters defining the range and type of values generated.
Although the values created with this behavior appear to be random, they’re
predetermined by the parameter settings you’ve chosen. As long as you don’t change
the parameters, the frame-by-frame values created by this behavior remain the same. If
you don’t like the randomly generated values, click the Generate button in the Behaviors
Inspector to pick a new random seed number. This number is used to generate a new
sequence of values.
441Chapter 9 Using Behaviors