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Table Of Contents
HUD Controls
The HUD lets you specify the direction and speed of the Wind 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 to the right
lets you adjust the scale of the HUD control, increasing or decreasing the effect the control
has over the object.
Direction and speed
Scale of the control
Press the Shift key while dragging the arrow to constrain it to 45 degree angles. Press the
Command key to change the arrow’s direction without affecting its length.
When you click the 3D button, the HUD allows you to use the center arrow control to
define the direction the object is “blown by the wind in 3D. The Speed slider (on the left
side of the HUD) lets you increase or decrease the velocity of the blown object.
Speed of the wind
Direction in X, Y, and Z
477Chapter 9 Using Behaviors