Adobe After Effects CS3 Manual de usuario descargar pdf (Pagina 527)

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AFTER EFFECTS CS3

User Guide

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Offset (Turbulence) Determines the portion of the fractal shape that is used to create the roughness.

Complexity Determines the level of detail in the roughness.

Note: Increasing complexity results in longer rendering times. Reduce the Scale value rather than increasing Complexity

to achieve similar results.

Evolution Animating this setting results in changes of the roughness over time.

Note: Although the Evolution value is set in units called revolutions, it’s important to realize that these revolutions are

progressive. The Evolution state continues to progress infinitely at each new value. Use the Cycle Evolution option to

return the Evolution setting to its original state at each revolution.

Evolution Options EvolutionOptionsprovidecontrolsthatrendertheeffectforoneshortcycleandthenloopitfor

the duration of your layer. 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:

• Cycle Evolution Creates a loop that forces the Evolution state to return to its starting point.

• Cycle The number of revolutions of the Evolution setting that the fractal cycles through before it repeats. The

timing of the Evolution cycles is determined by the amount of time between Evolution keyframes.

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.

• Random Seed Specifies a value from which to generate the roughness texture. Animating this 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 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)

Grain The direction in which to scatter the pixels—horizontally or vertically. Select None to scatter pixels in all

directions.

Scatter Randomness Specifies whether scattering changes at each frame. To animate scattering without keyframes

or expressions, select the Randomize Every Frame option.

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Adobe After Effects CS3 Manual de usuario Pagina 527

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