Apple Shake 4 - Manual (Page 886)

886 Chapter 28 Filters
spread
Tells Shake whether or not to consider outside of the frame. A button to the right of
the parameter name lets you set the mode.
• 0 = Compute “In Frame Only.”
• 1 = Compute “Outside Frame.”
Because of the Infinite Workspace, it is sometimes handy to compute outside of the
frame as well, for example, if the Blur is placed after a Scale command. Note that if
nothing is outside of the frame (black), you see a black edge.
channels
Lets you set which channels Shake should blur. You can choose one or all of the red,
green, blue, or alpha channels. The default is “rgba.”
Pixelize
The Pixelize node filters the images into square blocks, giving a mosaic look by
averaging all of the pixels within the block. It produces an effect similar to the Blur
node with the xFilter and yFilter parameters both set to impulse.
Parameters
This node displays the following control in the Parameters tab:
xPixels, yPixels
The block size, in pixels, to be filtered.
RBlur
The RBlur node blurs the image radially from a center point, creating flare effects.
Although this is a processor-intensive process, it is extremely accurate. The entire image
is blurred, based on the range from the inner radius to the outer radius. A pixel outside
of the oRadius distance is blurred by the oRadius amount. A pixel inside of the iRadius
amount is not blurred. A pixel between iRadius and oRadius is blurred by a percentage
of its position between the two Radius parameters.You can also use the mirror
parameter to blur beyond the center point, as well as use a negative amplitude to
sample pixels away from the center rather than toward the center.
A point outside of the oRadius is
blurred by the amount of oRadius.
This is modified by amplitude. If
amplitude is negative, the blur is
calculated outwards. If mirror is
turned on, the blur will extend past
the center point.