Apple Motion 3 User Manual
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Chapter 5
Using Behaviors
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. Use this slider to
offset the end of the Fade Out effect from the end of the object.
Grow/Shrink
Use the Grow/Shrink behavior to animate the scale of an object, enlarging or reducing
its size over time at a speed defined by either the Scale Rate or Scale To parameter. The
Grow/Shrink effect always begins at the object’s original size at the first frame of the
behavior.
Note: The Grow Shrink behavior cannot be applied to cameras or lights.
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Tip: To scale particles over their lifetime, use the Scale Over Life particle behavior. For
more information, see “
Note: The vertical and horizontal growth rates can be set to independent values, for
asymmetrical effects.
The Grow/Shrink behavior is a good one to use with high-resolution graphics to zoom
into an image, such as a map or photograph. You can also combine this behavior with
the Throw or Wind behavior to pan across the image while zooming into it.
The Grow/Shrink behavior can also be used to emphasize or de-emphasize images in
your project. You can enlarge objects to make them the center of attention, or shrink
an object while introducing another to move the viewer’s eye to the new element.
HUD Control
The Grow/Shrink HUD consists of two rectangular regions. The first, a rectangle with a
dotted line, represents the original size of the object. The second is a solid rectangle
that represents the relative growth rate, and can be resized by dragging any of the
borders. Enlarge the box to grow the target object, or reduce the box to shrink it. A
slider to the right lets you adjust the scale of the HUD controls, increasing or
decreasing the effect the controls have over the object.
Scale Rate/Scale To parameter
Zoom level of the HUD control
Original size