ADOBE AFTER EFFECTS 7.0
User Guide
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Adjust the following controls for the Fractal effect:
Set Choice Specifies the set used. Mandelbrot is the typical Mandelbrot set. Mandelbrot Inverse is the Mandelbrot
set mathematically inverted. Julia always changes depending on the center point from the Mandelbrot set and can
produce the set of all possible Julia sets. Julia Inverse is the inverse of the Julia set. To see a Julia set, you may want to
set the magnification to a negative value, because these sets tend to fill up the complex plane outside the normal
boundary.MandelbrotOverJuliaisthesameasMandelbrot,exceptthatitdoeschangewhentheJuliacenterpoint
changes.MandelbrotInverseoverJuliaisthesameasMandelbrotInverse,exceptthatitdoeschangewhentheJulia
center point changes.
Mandelbrot, Julia Specify the settings for the specified set. X (Real) and Y (Imaginary) specify the pixels at the center
of the image for either the Mandelbrot or Julia set. Magnification specifies the magnification of the effect. Escape
Limit specifies how many times the calculation looks for a color for a given pixel before it assigns the color black.
This is also the maximum number of line segments the Selection tool can use when tracing the path of a point.
Higher numbers require longer render times.
Color Specifies the color of the effect:
• Overlay Displaysaghostedversionoftheoppositeset.Forexample,whenviewingtheJuliaset,usethiscontrol
to display a ghosted version of the Mandelbrot set. When you select Overlay, a white cross hair with a black drop
shadowappearssoyoucanseetheexactpointatthecenteroftheoppositeset.ThiscontrolisusefulbecausetheJulia
set depends on the center point of the Mandelbrot set.
• Transparency Specifies whether black pixels are transparent. If you choose Solid Color from the Palette menu,
this control specifies whether everything inside or outside the set is transparent.
• Palette Specifies the palette to use when drawing the set. Lightness Gradient creates a gradient from black
through the hue specified by the Hue control to white. Then it applies the same gradient eight more times, each time
using the hue 45˚ away on the color wheel. The number of colors in the gradient is specified by the Cycle Steps
control. Hue Wheel uses all the color from the Hue color wheel, with maximum brightness and saturation. Black And
White uses alternating bands of black and white. Solid Color turns everything transparent except the inside of the
set, which uses the color specified by the Hue control. Select Transparent to get the opposite result.
• Hue Specifies the hue for solid colors and the starting hue for color gradients. This control works well for creating
smooth color changes or for cycling through the palette. Cycle Steps specifies the number of bands of different color
that appear before the cycle starts over. Cycle Offset specifies where, other than the beginning, a cycle starts.
• Edge Highlight Highlights the edges between color bands. This control requires low-quality mode. If you want
to use high-quality edge highlighting, use the Find Edges effect instead.
High Quality Settings Specify the oversampling settings for the effect:
• Oversample Method Specifies the method used to oversample the effect: Edge Detect-Fast-May Miss Pixels
performs a simple edge detection and oversamples only those pixels. This is the fastest option, especially in areas with
a lot of solid color, such as black, and generally produces results indistinguishable from Brute Force. Brute Force-
Slow-Every Pixel oversamples every pixel in the image. It is slow but precise.
• Oversample Factor Specifies the amount of oversampling to perform. For example, a value of 4 specifies that each
pixel is sampled 16 times (4x4=16) and that the average color is used. Higher values produce better quality output
but require longer render times.
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