Adobe 12040118 - After Effects Standard, Руководство

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gray with few areas of pure black or pure white. When used as a luma matte, the layer contains subtle areas of transparency.
Wrap Back Remaps triangularly, so that values above 1.0 or below 0 fall back into the range. This option reveals subtle detail when
Contrast is set above 100. When used as a luma matte, the layer reveals more detailed textured areas of transparency.
Allow HDR Results No remapping is performed. Values outside the range of 0-1.0 are preserved.
Transform Settings to rotate, scale, and position the noise layers. The layers appear as if they are at different depths if you select Perspective
Offset.
Complexity The number of noise layers that are combined (according to the Sub Settings) to create the fractal noise. Increasing this number
increases the apparent depth and amount of detail in the noise.
Note: Increasing Complexity results in longer rendering times. If appropriate, try reducing the Size rather than increasing Complexity to achieve
similar results and avoid longer rendering. A trick to increase apparent complexity without increasing rendering time is to use a negative or very
high Contrast or Brightness setting and choose Wrap Back for Overflow.
Sub Settings The fractal noise is generated by combining layers of noise. The Sub Settings control how this combination occurs and how the
properties of the noise layers are offset from one another. Scaling successive layers down creates finer details.
Sub Influence How much influence each successive layer has on the combined noise. At 100%, all iterations have the same amount of
influence. At 50%, each iteration has half as much influence as the previous iteration. A value of 0% makes the effect appear exactly as if
Complexity is 1.
Sub Scaling, Rotation, and Offset The scale percentage, angle, and position of a noise layer relative to the previous noise layer.
Center Subscale Calculates each noise layer from the same point as the previous layer. This setting can result in the appearance of
duplicated noise layers stacked on top of each other.
Evolution Uses progressive revolutions that continue to change the image with each added revolution. This method is unlike typical revolutions
that refer to a setting on the dial control for which the result is the same for every multiple of 360°. For Evolution, the appearance at 0° is different
from the appearance at 1 revolution, which is different from the appearance at 2 revolutions, and so on. To return the Evolution setting to its
original state (for example, to create a seamless loop), use the Cycle Evolution option.
You can specify how much the noise evolves over a period of time by animating Evolution. The more revolutions within a given amount of time, the
more rapidly the noise changes. Large changes in the Evolution value over a short period of time may result in flashing.
To create a seamless loop, use Cycle Evolution, and set Evolution keyframes at full revolutions with no degrees—partially completed revolutions
may interrupt the loop.
Evolution Options Options for Evolution.
Cycle Evolution Creates a cycle of Evolution that loops over the set amount of time. This option forces the Evolution state to return to its
starting point, creating a smooth progressive cycle, a nonrepeating cycle, or a loop segment.
To ensure that a cycle completes full revolutions, choose a Cycle value that either matches or is evenly divisible by the number of
revolutions set for Evolution.
Cycle (in Revolutions) Specifies the number of revolutions that the noise cycles through before it repeats. The amount of time between
Evolution keyframes determines the speed of these Evolution cycles. This option affects only the evolution of the noise, not Transform or
other controls. For example, if you view two identical states of noise with different Size or Offset settings, they don’t appear the same.
Note: Cycle is available only if Cycle Evolution is selected.
Random Seed Sets a random value from which to generate the noise. Animating the Random Seed property results in flashing from one
set of noise to another (within that fractal type), which is usually not the result that you want. For smooth animation of noise, animate the
Evolution property.
You can easily create new fractal noise 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.
Instead of animating Evolution over the entire composition, save rendering time by prerendering and looping one short Evolution cycle for the
duration you want.
Opacity Opacity of the noise.
Blending Mode The blending operation between the fractal noise and the original image. These blending modes are identical to the ones in the
Modes column in the Timeline panel, with the following exceptions:
None Renders the fractal noise only and does not composite on the original layer.
Hue Renders the fractal noise as hue values instead of grayscale. The Saturation and Lightness of the original layer are maintained. If the
original layer is grayscale, nothing happens.
Saturation Renders the fractal noise as saturation values instead of grayscale. The Hue and Lightness of the original layer are
maintained. If the original layer is grayscale, nothing happens.
Create a seamless loop using Fractal Noise
1. Select a layer in the Timeline panel, and choose Effect > Noise & Grain > Fractal Noise.
2. Set two keyframes for Evolution.
3. Adjust the time between keyframes and the number of Evolution revolutions until you are satisfied with the animation of the noise.
4. Select Cycle Evolution.
5. Set a value for Cycle.
The evolution completes the number of revolutions you specify for Cycle in the amount of time determined by the distance between