2011

Table Of Contents
Another expression that can be used to create random noise with the Noise
tool is the Abs math function.
This expression indicates the Noise Seed is based on an absolute value
(anything between 0 and 1) of the angle (in radians) of the sine wave created
by the current time (t). It is then multiplied (*) by a frequency of 50. The
expression would still be valid if the Abs math function were not part of the
string.
Example: Animating Layers in Reaction
This example is somewhat more involved in that it uses the Eval time function
within a Reaction nodesee
Time Functions on page 751 and Basic Compositing
in Reaction
on page 243.
Example: Animating Layers in Reaction | 741