5

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.
• 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 slows down as it gradually decelerates
to a stop when it reaches the target.
• Ease Both: The object slowly accelerates and then slows down as it gradually decelerates
to a stop when it reaches the target.
• Accelerate: The object moves toward the target with increasing speed.
• Decelerate: The object moves toward the target with decreasing speed.
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: If the object is aligning on the correct axis, but appears backwards, this
checkbox flips the object so it faces the proper direction.
HUD Controls
The HUD has an Object well, a Transition slider, a Speed pop-up menu that allows you
to define the object’s velocity, an Axis pop-up menu to choose which axis should point
at the target after the movement is complete, and an Invert Axis checkbox.
Snap Alignment to Motion
This behavior aligns the rotation of an object to match all changes made to its position
along an animation path. This behavior is meant to be combined with behaviors that
animate the position of an object, or with a keyframed animation path you create yourself.
414 Chapter 9 Using Behaviors