Apple Motion 2 - Manual (Page 608)

608 Chapter 8 Working With Particles
• Color Gradient control: A gradient control that allows you to tint particles based on
their age.
• Color control: When a color tag is selected in the Color Gradient control, you can
change its color by either clicking the color well and choosing a color using the
Colors window, or Option-clicking the well and using the pop-up color palette.
• Opacity slider: When an opacity tag is selected in the Opacity Gradient control, you
can use this slider to change its shade, from 100 (opaque/white) to 0 (transparent/
black).
• Location slider: Changes the location of the selected gradient tag or spread control
relative to the gradient bar.
Color Range: A gradient control that appears when the Color Mode is set to Pick From
Range. Use it to define a range of colors used to randomly tint new particles. The
direction of the gradient colors is not relevant, only the number of colors that appear
within the gradient. The Color Range parameter has the same controls as the Color
Over Life parameter.
Note: For more information on how to use gradient controls, see “ Using the Gradient
Editor ” on page 485.
Particle Cell Parameters
Parameters in the Particle Cell tab control the behavior particles generated by the
system of this cell, independently of the parameters governing the emitter. In particle
systems with multiple cells, each has its own particle cell parameters. This lets you
create particle systems made up of many kinds of particles, each with distinctly
different behaviors.
To open a cell’s Particle Cell tab:
1 Select any cell within an emitter in the Layers tab or Timeline.
2 In the Inspector, click the Particle Cell tab.
01112.book Page 608 Sunday, March 13, 2005 10:36 PM