Apple Shake 4 User Manual
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Chapter 26
Transformations, Motion Blur, and AutoAlign
xScale, yScale, zScale
These parameters let you change the scale of the image along any axis. By default, the
yScale parameter is locked to the xScale parameter. The sliders let you adjust the scale
of the image from 0 to 4 times the current size, but you can enter any value into the
numeric field.
Note: Entering a negative value into the xScale, yScale, or zScale numeric field reverses
the image along that axis.
xCenter, yCenter, zCenter
These parameters let you change the 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.
fieldOfView
Designates the vertical field of view, and affects the appearance of perspective shift.
When this is 0, the view is considered to be orthogonal, with increasing perspective
changes when you combine zPan, angleX, and angleY with a higher fieldOfView.
xFilter, yFilter
Lets you pick which method Shake uses to transform the image. For more information,
see “
Filters Within Transform Nodes
transformationOrder
The order the transform is executed, with
•
t = translate
•
r = rotate
•
s = scale
By default, this is set to “trs.”
Note: If you are trying to transfer camera setups from 3D applications, this is the order
transforms are pushed onto the matrix. The r transform can be replaced with yzx
(representing the three dimensions used by the 3D camera) and the resulting
transformationOrder would read tyzxs.
inverseTransform
Inverts the transform. This can be used to quickly convert tracking data into
stabilization data.
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.