Evolution Controls For The Roughen Edges Effect; Scatter Effect (Pro Only) - Adobe AFTER EFFECTS 7.0 Manual

Evolution controls for the Roughen Edges effect

You can adjust the following Evolution controls:
Creates subtle changes in the shape of the roughness. Animating this setting results in smooth changes or
Evolution
evolution of the roughness over time. Set keyframes for Evolution to determine how much the roughness will evolve
over the period of time between keyframes. The more revolutions in a given amount of time, the more rapidly the
roughness changes. Higher Evolution values may result in less smooth changes in the roughness.
Note: Although the Evolution value is set in units called revolutions, it is important to realize that these revolutions are
progressive. The Evolution state continues to progress infinitely at each new value. Use the Cycle Evolution option
(explained below) to return the Evolution setting to its original state at each revolution.
Evolution Options provide controls that render the effect for one short cycle and then loop it for
Evolution Options
the duration of your project. Use these controls to prerender your roughen elements into loops, and thus speed up
rendering time. Use the following controls to create a smooth, progressive, nonrepeating loop:
•
Creates a loop that forces the evolution state to return to its starting point.
Cycle Evolution
•
(available only when you select Cycle Evolution) Specifies the number of revolutions (of the Evolution
Cycle
setting) that the fractal noise cycles through before it repeats. For example, if you set the evolution to occur over five
revolutions and you set the Cycle value to 2, then the evolution loops twice. The timing or speed of these Evolution
cycles is determined by the amount of time allowed between Evolution keyframes.
Note: The Cycle control affects only the state of the fractal, not geometrics or other controls. For example, two identical
states of the fractal will not appear the same if viewed with different Size or Offset settings.
•
Specifies a unique random value from which to generate the roughness texture. Animating this
Random Seed
property results in flashing from one set of fractal shapes to another within the same fractal type. For smooth
transition of the roughness, use the Evolution control.
Note: Create new roughness animations by re-using previously created Evolution cycles and changing only the Random
Seed value. Typing a new Random Seed value alters the noise pattern without disturbing the evolution animation.

Scatter effect (Pro only)

The Scatter effect scatters the pixels in a layer, creating a blurry or smeared appearance. Without changing the color
of each individual pixel, the Scatter effect redistributes the pixels randomly, but in the same general area as their
original positions. You can automatically animate the Scatter effect over the time range without keyframes by
randomizing every frame.
This effect works with 8-bpc and 16-bpc color.
Original (left), and with effect applied (right)
Adjust the following controls for the Scatter effect:
Specifies the amount of scattering. Higher values produce more blur.
Scatter Amount
Specifies the direction in which to scatter the pixels—horizontally or vertically. Select None to scatter pixels
Grain
in all directions.
ADOBE AFTER EFFECTS 7.0
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User Guide