Apple Motion 5.1.1 - Manual (Page 318)

Chapter 9 Behaviors 318
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End Offset: A slider that offsets 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.
Controls in the HUD
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, a solid rectangle, represents the
relative growth rate. Drag a border of the sold rectangle to grow or shrink the object. Drag the
slider to adjust the scale of the HUD controls, increasing or decreasing their effect.
Zoom level of HUD
Original size
Scale To parameter
Motion Path
The Motion Path behavior lets you create a 2D or 3D motion path for an object to follow. When
you apply this behavior, the motion path defaults to an open spline: a straight line defined by
two points at the beginning and end of path. You can also choose from preset path shapes, such
as a closed spline, loop, rectangle, or wave, or use a shape to define a path. A shape used as the
source for a motion path can be animated.
You can modify the motion path in 3D space so an object travels along the path’s X, Y, and Z axes.
For more information, see
Motion Path tasks on page 322.
The first point on the path is the position of the object in the Canvas at the first frame of the
behavior. Option-click anywhere on the path to add Bezier points, which allow you to reshape
the motion path by creating curves.
When you play the project, the object moves along the assigned path. (To show or hide the
motion path, choose Show Overlays from the View pop-up menu in the status bar.) The speed at
which the target object travels is defined by the duration of the behavior. Speed is also affected
by the Speed parameter, which lets you modify the object’s velocity—adding acceleration and
deceleration at the beginning and end of the behavior, for example. You can also create a custom
preset defining how the object travels along the path.
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