Apple Motion 5.1.1 - Manual (Page 322)

Chapter 9 Behaviors 322
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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.
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Custom: Object speed is defined by 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.
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Custom Speed: A slider, available when when Speed is set to Custom, that modifies 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 reaching the end of the animation.
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Apply Speed: A pop-up menu that determines how the Speed parameter (velocity) is applied
over the duration of the behavior. (Loops must be set to a value greater than 1 for the Apply
Speed parameter to have any effect.) There are two choices:
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Once Per Loop: The velocity, as defined by the Speed parameter, is applied to each cycle.
For example, if Loops 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.
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Over Entire Duration: The velocity, as defined by the Speed parameter, is applied one time
over the duration of the behavior. For example, if Loops 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.
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Loops: A slider that sets 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.
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End Condition: A pop-up menu that defines the behavior of the object after it reaches the end
of its motion path. There are two options:
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Repeat: The object travels the motion path the number of times defined by the
Loop parameter.
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Ping-Pong: The object moves along the path until it reaches the last point on the path, then
moves backward to the first point on the path. The number of “ping-pongs” is defined by the
Loops parameter.
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Control Points: Value sliders, available when the path shape is Open Spline or Closed Spline,
that set the X, Y, and Z coordinates of the motion path control points. (Click the disclosure
triangle to display the X, Y, and Z value sliders.)
Note: You cannot apply Parameter behaviors to the control points.
Motion Path tasks
The following tasks demonstrate how to customize the Motion Path behavior.
Move the object and its motion path
m Select the object (not the Motion Path behavior), and move the object in the Canvas.
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