Apple Motion 3 - Manual (Page 976)

976 Chapter 11 Working with Generators
Noise
Where would motion graphics artists be without a noise filter or generator? To make
animated noise, you can keyframe the Random Seed parameter in the Noise HUD or
Inspector. When filters are applied to an animated Noise generator, you can create
some unique textures. In the second image below, the Scrape distortion filter is applied
to an animated Noise generator to create a vibrant, electric light-type texture.
Parameters in the Inspector
Random Seed: Each seed value gives you a different noise image, so changing this
over time allows you to get constantly changing noise. The easiest way to see and use
the random seed parameter is to add a ramp behavior to it, then ramp from a very
small random seed value to a very large random seed value over time. Values range
from 0 to 1000.
One Color Ray
The One Color Ray generator creates a ray pattern based on variations of a color. You
can select the color, the degree of variance, the number of divisions represented, and
rotation of the pattern.
Default Noise generator Noise generator with applied Scrape filter
One Color Ray generator One Color Ray generator modified