Apple Shake 4 - Manual (Page 802)

802 Chapter 26 Transformations, Motion Blur, and AutoAlign
Pan
The Pan node pans the image with subpixel precision. To wrap an image around the
frame (for example, anything that moves off the right edge of the frame reappears on
the left), use the Scroll node.
Parameters
This node displays the following controls in the Parameters tab:
xPan, yPan
These values let you move the image horizontally and vertically. 0, 0 represents the
center of the frame, and the xPan and yPan sliders allow adjustments up to plus or
minus the total width and height of the image frame.
motionBlur
Motion Blur quality level. 0 is no blur, whereas 1 represents standard filtering. For more
speed, use less than 1. This value is multiplied by the global motionBlur parameter.
• shutterTiming: A subparameter of motionBlur used to specify shutter length. 0 is no
blur, whereas 1 represents a whole frame of blur. Note that standard camera blur is
180 degrees, or a value of .5. This value is multiplied by the global shutterTiming
parameter.
• shutterOffset: A subparameter of motionBlur representing the offset from the current
frame at which the blur is calculated. Default is 0; previous frames are less than 0.
Resize
For information on the Resize node, see “ Resize ” on page 184.
Rotate
The Rotate node rotates the image with subpixel precision.
Parameters
This node displays the following controls in the Parameters tab:
angle
Lets you rotate the image around its center point. The slider allows adjustments plus or
minus 360 degrees, but you can enter any value you want into the numeric field.
aspectRatio
This parameter inherits the current value of the defaultAspect global parameter. If
you’re working on a nonsquare pixel or anamorphic image, it is important that this
value is set correctly to avoid unwanted distortion in the image.
xCenter, yCenter
These parameters let you move the horizontal and vertical position of the center point
around which all transformations occur. For example, moving the center point to the
right changes the point about which the image rotates when you adjust the angle
parameter.