GRASS VALLEY zodiak, User Manual

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Zodiak User Manual 83
3-D Digital Effects Concepts
Spin
Spins are measured in number of 360° rotations (up to 999). Fractional spin
values are also supported. A single axis 0.50 spin is the same as a single axis
0.50 rotation. Spin values can be positive or negative, which determines the
direction of spin.
Skew
Skew supports values of ±999, though extreme values will probably rarely
be used.
Aspect
Aspect values are in percentage of the original size, with 1.0 = 100%, 0.5 =
50%, etc.
Perspective
Perspective supports values from 0-100, with 0.06 as the default.
Spin and Rotation Relationship
It is possible to use both Spin and Rotation at the same time in an effect.
When both are used, the transforms are nested so that the values of one
transform are applied after the previous transform values have been calcu-
lated. This nesting provides increased control of the effect dynamics.
Source and Target space also affects the transform nesting order
Figure 57 .
Figure 57. Spin and Rotate Transform Nesting
Spin
Source
Rotate
Source
Rotate
Target
Spin
Target
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