Apple Motion 4 - Manual (Page 653)

Custom Spin: This group of parameters appears when Increment Type is set to Custom.
Use this mini-curve editor for more precise control over the Spin of particles in your
particle system.
• Custom Spin: Use this control to adjust the value of the selected keyframe in the
mini-curve editor. This parameter appears when Custom is selected in the Increment
Type pop-up menu.
• Over Life: Use this slider to adjust the position of the selected keyframe in the life of
the particle. This parameter appears when Custom is selected in the Increment Type
pop-up menu.
HUD Controls
The HUD contains the Increment Type pop-up menu, and the Spin Rate, Spin At Birth,
and Spin At Death parameters.
Viewing Animated Emitter Curves in the Keyframe Editor
When you animate an emitter or cell parameter using keyframes, a curve describing that
animation appears in the Keyframe Editor. The selected object determines which curves
appear in the Keyframe Editor (when Animated is selected from the Show pop-up menu
in the Keyframe Editor list):
• Select the emitter to display animated emitter parameters such as Position and Rotation
(in the Properties tab) or Emission Angle and Range (in the Emitter tab).
• Select the cell to display animated parameters such as Birth Rate or Angle (in the Particle
Cell tab).
Note: To manually send an animated parameter to the Keyframe Editor, click the
parameter’s Animation menu, then choose Show In Keyframe Editor.
The parameter is displayed in the Keyframe Editor in a new, untitled curve set.
653 Chapter 11 Working with Particles