Grass Valley Kayenne XL Package v.7.0.4 - Manual (Page 60)

58 Kayenne XL Package — User Manual
Section 2 — Concepts
Size
Enlargement and reduction of the picture area while it remains in the same
plane in 3-D space. This is different from picture translation in the Z axis,
where the picture retains its original size, but appears smaller when moved
away, and larger when moved closer.
Rotate
Picture rotation about the reference axis in the X, Y, and Z dimensions
(
Figure 23 ). Rotate is limited to ± one half revolution, and will always take
the shortest path to the new position. Rotate uses Quaternion mathematics
to calculate the move with increased accuracy. Multiple rotations are per-
formed with the Spin function.
Figure 23. Rotate
Spin
Supports multiple rotations about the reference axis in the X, Y, and Z direc-
tions. Spin supports fractional values, and is similar to Rotate when the
move is less than ± one half revolution. Spin uses Euler mathematics to cal-
culate the move, which is not quite as precise as Quaternion, but permits
multiple rotations. Spin applies transform values in Z, X, Y order, so editing
effects in this axis order provides the best control of the effect.
Note Following broadcast conventions, moving the Joystick forward or back along
the Joystick’s Y axis rotates the top of the picture forward or back (a rotation
about the X reference axis). Similarly, moving the Joystick left or right along
the Joystick’s X axis rotates the side picture left or right (a rotation about the
Y reference axis).
0865_12_r1
Y
Z
X
Y
Z
X
Y
Z
X
X Rotate
(Around Y Axis)
Y Rotate
(Around X Axis)
Z Axis Rotate