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You can also use Mesh Warp to create smooth transitions between multiple images and
layers. Using keyframes for effects and opacity, you can animate the transition between
layers, revealing and distorting layers over time.
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A. Original layer with grid applied B. Same layer with modified grid C. Final image
For more information, see the After Effects product section on Adobe's Web site.
Mirror
This effect splits the image along a line and reflects one side onto the other. The Reflection
Center specifies the position of the line.The Reflection Angle determines which side is
reflected and where the reflection appears. An angle of 0 degrees reflects the left side
onto the right. An angle of 180 degrees reflects the right side onto the left. An angle of 90
degrees reflects the top onto the bottom. An angle of 270 degrees reflects the bottom
onto the top. The layer's quality setting influences the Mirror effect. At Best quality, the
reflected image is smoother and more accurate.
Offset
This effect pans the image within a layer. Visual information pushed off one side
of the image appears on the opposite side. At Best quality, the offset is performed with
subpixel precision.
The Shift Center To option specifies the new position of the original image's center point.
Blend with Original specifies the amount by which the offset image is blended with the
original image.
Optics Compensation (PB only)
This effect adds or removes camera lens distortions. Use it when you have composited
elements with mismatched lens distortions to avoid anomalies in the animation. To use
this effect, first determine the Field of View value for the distorted footage; then apply that
value in reverse to the computer-generated image. This process matches the distortion
between the two images.
For more information, see the After Effects product section on Adobe's Web site.
Polar Coordinates
This effect distorts a layer by transposing each pixel in the layer's x, y coordinate system to
the corresponding position in the polar coordinate system, or the reverse. It produces
unusual and surprising distortions that can vary greatly depending on the image and the
controls you select. The standard coordinate system specifies points by measuring the
horizontal distance (x axis) and the vertical distance (y axis) from the origin. Each point is
specified as (x, y). The polar coordinate system specifies points by measuring the length of
a radius from the origin and its angle from the x axis. Each point is specified as (r, ).
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