Adobe AFTER EFFECTS CS3 PROFESSIONAL User Manual page 525

Note: The Cycle control affects only the state of the fractal, not geometrics or other controls, so you can get different
results with different Size or Offset settings.
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Specifies a value from which to generate the roughness texture. Animating this property results in
Random Seed
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 reusing previously created Evolution cycles and changing only the Random
Seed value. Using a new Random Seed value alters the noise pattern without disturbing the Evolution animation.
Scatter effect
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.
This effect works with 8-bpc and 16-bpc color.
Original (left), and with effect applied (right)
The direction in which to scatter the pixels—horizontally or vertically. Select None to scatter pixels in all
Grain
directions.
Specifies whether scattering changes at each frame. To animate scattering without keyframes
Scatter Randomness
or expressions, select the Randomize Every Frame option.
Strobe Light effect
The Strobe Light effect performs an arithmetic operation on a layer or makes the layer transparent at periodic or
random intervals. For example, every five seconds the layer could become completely transparent for one-tenth of a
second, or a layer's colors could invert at random intervals.
This effect works with 8-bpc color.
The color of the strobe light.
Strobe Color
The effect's transparency. The result of the effect is blended with the original image, with the
Blend With Original
effect result composited on top. The higher you set this value, the less the effect affects the layer. For example, if you
set this value to 100%, the effect has no visible result on the layer; if you set this value to 0%, the original image doesn't
show through.
How long, in seconds, each strobe lasts.
Strobe Duration (secs)
The time, in seconds, between the start of subsequent strobes.
Strobe Period (secs)
Random Strobe Probability
Choose Makes Layer Transparent for each strobe to make the layer transparent. Choose Operates On Color
Strobe
Only to use the operation specified by Strobe Operator.
The operation to use for each strobe.
Strobe Operator
The probability that the strobe operation will apply to any given frame.
AFTER EFFECTS CS3 519
User Guide