Apple Motion 5.1.1 - Manual (Page 522)

Chapter 14 Particles 522
Emitter HUD controls
The Emitter HUD contains frequently used emitter controls necessary to modify a particle
system’s size and shape. These parameters are a subset of those found in the Emitter Inspector.
In 2D projects, the Emitter HUD contains a group of sliders and the emission control, which
provides a visual way to manipulate three particle system parameters: Emission Range, Emission
Angle, and Speed.
Emission angle
(angle of arrows) and
speed (length of arrows)
Emission range
When 3D is enabled in the Emitter Inspector, the Emitter HUD offers additional 3D controls. In 3D,
the emission control modifies the Emission Latitude and Emission Longitude parameters.
Emission control
(pointed and
spread upward)
When an emitter and the 3D Transform tool (in the toolbar) are selected, the 3D Emitter HUD
expands to display additional controls that allow you to transform the emitter in X, Y, and Z
space, regardless of whether the group containing the emitter is 2D or 3D.
67% resize factor