Apple Motion 4 - Manual (Page 459)

HUD Controls
The 2D HUD lets you specify the direction and speed of the Throw behavior by dragging
an arrow within 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
to the right lets you adjust the scale of the HUD control, increasing or decreasing the
effect the direction/speed control has over the object.
Controls direction and
speed of Throw.
Adjusts scale of the
direction and speed
control.
When you click the 3D button, additional 3D controls become available. The center arrow
now defines the direction the object is thrown in 3D space (X, Y, and Z axes). The Speed
slider (on the left side of the HUD) lets you increase or decrease the velocity of the thrown
object.
Adjusts velocity of the
throw.
Adjusts the direction of
the throw in X, Y, and Z
space.
In the 2D and 3D Throw HUDs, press the Shift key while dragging the arrow to constrain
it to 45 degree angles. In the 2D HUD, press the Command key to change the arrow’s
direction without affecting its length.
Note: The maximum speed you can define with the HUD is not the maximum possible
speed. Higher values can be entered into the Throw Velocity/Throw Distance parameter
in the Behaviors tab of the Inspector.
Related Behaviors
• Motion Path
• Gravity
459 Chapter 9 Using Behaviors