Adobe AFTER EFFECTS CS3 PROFESSIONAL User Manual page 543

How the gradient layer's pixels are mapped to the pixels of the layer to which the effect is
Gradient Placement
applied:
• Uses multiple tiled copies of the gradient layer.
Tile Gradient
• Uses a single instance of the gradient layer in the center of the layer.
Center Gradient
•
Stretch Gradient To Fit
Inverts the gradient layer's influence; lighter pixels in the gradient layer create transparency at a
Invert Gradient
lower Transition Completion value than do darker pixels.
Iris Wipe effect
The Iris Wipe effect creates a radial transition that reveals an underlying layer. Specify the number of points used to
create the iris using a range of 6 to 32 points, and specify whether an inner radius is used. If Use Inner Radius is
selected, you can specify values for both Inner Radius and Outer Radius; the iris isn't visible if Outer Radius, Inner
Radius, or both are set to 0. The iris is roundest if both Outer Radius and Inner Radius are set to the same value.
The Iris Wipe effect is the only Transition effect that doesn't have a Transition Completion property. To animate the
Iris Wipe effect to expose the underlying layers, animate the Radius properties.
This effect works with 8-bpc and 16-bpc color.
Original (top left), and with effect applied (bottom left and right)
Linear Wipe effect
The Linear Wipe effect performs a simple linear wipe of a layer in a specified direction. At Draft quality, the edge of
the wipe isn't anti-aliased; at Best quality, the edge of the wipe is anti-aliased and the feather is smooth.
The direction that the wipe travels. For example, at 90˚ the wipe travels from left to right.
Wipe Angle
This effect works with 8-bpc and 16-bpc color.
Resizes the gradient layer horizontally and vertically to fit the entire area of the layer.
AFTER EFFECTS CS3 537
User Guide