Apple MA434Z/A User Manual - Page 886

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. 886 Chapter 28 Filters