Apple Motion 3 - Manual (Page 135)

Chapter 1 Getting to Know Motion 135
HUD
The HUD is one of the most versatile and handy tools in the Motion interface. It is a
dynamically updating floating window that puts the most common controls for any
selected object within easy reach.
The HUD also contains special controls for certain types of effects such as Basic Motion
behaviors and particle systems. These unique controls allow you to set multiple
parameters simultaneously and in an intuitive way.
For example, the 2D Particle Emitter HUD contains a single control that provides a
visual way to manipulate three different particle system parameters—Emission Range,
Emission Angle, and Speed. You can read more about specific HUD controls in their
namesake chapters.
Note: It is easier to enter a specific value for a slider parameter in the Inspector’s value
sliders. You can Option-click to the left or right of an Inspector’s slider to decrease or
increase by a value of 1. Option-click the arrow on either side of the value slider to
increase or decrease by a value of.01.