Apple Motion 5.1.1 - Manual (Page 331)

Chapter 9 Behaviors 331
The Throw behavior is also useful when you’re moving an object through a simulation. For
example, you might move the object past other objects that have Attractor or Repel behaviors
applied to them. Because the Throw behavior only applies a single force to move the target
object at the initial frame of the behavior, any other behaviors that interact with the target
object have potentially greater influence over its motion.
Important: The Throw behavior does not apply a continuous force, nor can you create changes
in direction or speed, because Throw cannot be keyframed. To create keyframed changes in
direction or speed, use the Wind behavior. To create a more complex animation path, use the
Motion Path behavior.
Parameters in the Inspector
•
Affect Subobjects: A checkbox, available when Throw is applied to an object that contains
multiple objects (such as a group, particle emitter, or text), that causes each object within a
parent object to move as an individual object. When this checkbox is deselected, the entire
layer or group moves as a whole.
•
Increment: A pop-up menu that sets how the behavior’s effect progresses over its duration in
the Timeline. There are two choices:
•
Continuous Rate: Sets the speed of the object at a steady number of pixels per second,
specified in the Throw Velocity parameter.
Note: When the Canvas displays a nonsquare pixel image, the vertical rate is in pixels per
second, and the horizontal rate is the perceptual equivalent.
•
Ramp to Final Value: Moves the object from its original position to the specified distance (in
pixels) in the Throw Distance parameter.
•
Throw Velocity/Throw Distance: A slider that sets either velocity or distance, depending on
the setting in the Increment pop-up menu. When Increment is set to Continuous Rate, the
Throw Velocity slider sets a continuous speed for the object to move in X, Y, or Z space. When
Increment is set to Ramp to Final Value, the Throw Distance slider sets a total distance (in
pixels) for the object to travel in X, Y, and Z space over its duration. The slider is limited to 100
pixels. Use the value slider to enter values greater than 100.
Controls in the HUD
The 2D HUD lets you specify the direction and speed of the Throw behavior by dragging an
arrow in a circular region. The direction of the arrow defines the direction of movement in X and
Y space, and the length of the arrow defines speed (velocity). A slider adjusts the scale of the
HUD control, increasing or decreasing the effect of the direction/speed control.
Controls direction
and speed of throw
Adjusts the scale of
the direction control,
affecting speed
67% resize factor