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Chapter 5 Using Behaviors 419
 Natural: The speed in which the object moves over the path is determined by the
shape of the path. For example, if the path is a U-shape curve, the object moves
faster as it moves toward the low point of the U and slower as it moves up the edges.
 Custom: Custom allows you to define the movement of the object along its path by
setting keyframes for the object’s speed from 0 to 100 percent. In other words, you
determine the position of the object along the path in time.
 Custom Speed: This parameter becomes available when Speed is set to Custom.
You can modify the Custom Speed velocity curve in the Keyframe Editor. You can
keyframe custom values to make an object, for example, travel forward to a
specific percentage of the path, then backward, then forward, and so on before it
reaches the end of the animation.
Apply Speed: When Loop is set to a value greater than 1, determines how the Speed
parameter (velocity) is applied over the duration of the behavior.
Note: Loop must be set to a value greater than 1 for the Apply Speed parameter to
have any effect.
 Once Per Loop: The velocity, as defined by the Speed parameter, is applied to each
cycle. For example, if Loop is set to 3 and Speed is set to Accelerate, the object
accelerates each time it travels over the path. The speed is applied to the entire
duration, ignoring the Loops setting.
 Over Entire Duration: The velocity, as defined by the Speed parameter, is applied
one time over the duration of the behavior. For example, if Loop is set to 3 and
Speed is set to Accelerate, the object accelerates the first time it travels over the
path, but not the second and third time.
Loops: Determines the number of times the object travels the motion path over the
duration of the behavior. For an object to travel its path more than once, or to “ping
pong,” Loops must be set to a value greater than 1.
End Condition: A pop-up menu that defines the behavior of the object once it reaches
the end of its motion path.
 Repeat: The object travels the motion path the number of times defined by the
Loop parameter.
 Ping-Pong: The object moves along the path until it reaches the last point on the
path, then it moves backward to the first point on the path. The number of “ping
pongs” is defined by the Loops parameter.
Control Points: Click the disclosure triangle to display the Position parameters for the
motion path control points. The first value field is X, the second value field is Y, and the
third value field is Z.
Note: You cannot apply Parameter behaviors to the control points.