Apple Motion 5.1.1 - Manual (Page 327)

Chapter 9 Behaviors 327
Parameters in the Inspector
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Object: An object well that defines the target object. To set the target object, drag an object
from the Layers list to this object well. You can also drag the target object from the Layers list
onto the Point At behavior.
•
Transition: A slider that determines how long it takes the object to go from its starting
orientation to pointing at the center of the target object. This parameter is useful when the
object is pointing at a moving target object.
If Transition is set to 50% in a 300-frame project, and the target object is not moving, the
point-at object takes 150 frames to point at (or orient to) the center of the target object and
then stops moving for the duration of the behavior. If Transition is set to 100%, the point-at
object takes the full 300 frames to point at the target object. If the Point At behavior’s duration
is 100 frames, and Transition is set to 50%, the point-at object takes 50 frames to orient to the
target object.
If Transition is set to 50% in a 300-frame project, and the target object is animated, the point-at
object takes 150 frames to point at (or orient to) the center of the target object and then
continues following the animated target object for the duration of the behavior. If Transition is
set to 100%, the point-at object takes the full 300 frames to point at the target object.
•
Speed: A pop-up menu that defines the object’s velocity from its position in the Canvas to the
position of the target. There are six choices:
•
Constant: The object moves at a steady speed from its position toward the target.
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Ease In: The object starts at a slow speed, then reaches and maintains a steady speed toward
the target.
•
Ease Out: The object starts at a steady speed, then gradually decelerates to a stop when it
reaches the target.
•
Ease Both: The object slowly accelerates, then gradually decelerates to a stop when it reaches
the target.
•
Accelerate: The object moves toward the target with increasing speed.
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Decelerate: The object moves toward the target with decreasing speed.
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Axis: A pop-up menu that lets you align the rotation of the object to the X, Y, or Z axis. The
default axis is Z. This parameter specifies which axis points at the target after the movement
is complete.
•
Invert Axis: A checkbox that flips the object so it faces the proper direction. Select the
checkbox if the object is aligning on the correct axis, but appears backwards.
Snap Alignment to Motion
This behavior aligns the rotation of an object to match all changes made to its position along
an animation path. Snap Alignment to Motion is meant to be combined with behaviors that
animate the position of an object, or with a keyframed animation path you create yourself.
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