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Note: For projects using the default camera settings and a default Z position for the
replicator, the Height is measured in pixels; however, the Width is measured in square
pixels. This is done so a shape that is numerically square appears square when “Correct
for Aspect Ratio” is selected in the View pop-up menu in the top-right corner of the
Canvas.
Shape Source: This image well, which becomes available only when Shape is set to
Geometry, allows you to load a shape object as the source for the replicator pattern. To
set the shape source for the replicator, drag a shape from the Layers list or Timeline to
the Shape Source well.
Image Source: This image well, which becomes available when the Shape parameter is
set to Image, allows you to load an image object as the source for the replicator shape.
To set the image source, drag an image from the Layers list or Timeline to the Image
Source well.
Emission Alpha Cutoff: When the Image Source object contains an alpha channel, this
slider defines the minimum opacity value necessary to create an element at that point
on the source image. For example, when set to 25%, elements only appear at points
where the alpha value of the image is equal to or greater than 25% opacity. The lower
the Emission Alpha Cutoff value, the more cells appear. For this parameter to be effective,
the alpha channel must have areas of varying transparency.
Shape with a feathered edge used
as Image Source
Emission Alpha Cutoff set to 75%
Emission Alpha Cutoff set to 30%
Start Point: This parameter is available when Shape is set to Line or Wave. Two value
sliders define, in X, Y, and Z coordinates, the first point of the line or wave on which the
elements are positioned. Click the disclosure triangle to access the Z Start Point value
slider. You can adjust these values in the Canvas using the onscreen controls (with the
Adjust Item tool).
End Point: This parameter is available when Shape is set to Line or Wave. Two value
sliders define, in X, Y, and Z coordinates, the second point of the line or wave on which
the elements are positioned. Click the disclosure triangle to access the Z Start Point value
slider. You can adjust these values in the Canvas using the onscreen controls (with the
Adjust Item tool).
762 Chapter 15 Using the Replicator