Apple Motion 4 - Manual (Page 483)

Once you’ve arranged the different bars with their masks in the Canvas, you can apply
Ramp behaviors to the X values of each mask to easily move each mask off to the side,
giving the illusion that each bar is growing. Set the End Value parameter of each Ramp
behavior to the length you want each bar to reach, and you’re done!
Before After using Ramp behaviors to move the masks
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.
Curvature does not affect the overall duration of the effect, since that is defined by the
length of the behavior in the Timeline.
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 (Go) pop-up menu shows the parameter being affected and can
be used to reassign the behavior to another parameter.
483 Chapter 9 Using Behaviors