Sony DVS-9000 System User Manual page 542

The direction of a ray is defined by longitude and latitude.
• Longitude: A direction (angle), expressed as a plus value for clockwise
• Latitude: Latitude
The following figure shows the relationships between the longitude and
latitude of parallel rays, input picture, and test sphere.
The unit of these direction parameters is the number of rotations, with 360°
(1 rotation) expressed as 1.00, in the same way as 3D rotation parameters.
The following relationships apply in the example shown in the figure.
Parameter
Longitude
Latitude
The fractional part of the setting after the decimal point corresponds to an angle
0 to 360°. If the fractional parts of two setting values are the same, the effect is
the same even if the integral parts are different.
542
DME Special Effect Operations
rotation in the plus direction with respect to the X axis of the input picture.
Input picture
Test sphere
Setting
0.12
0.12
Test sphere
Ray
Z-axis
Parallel rays
Latitude=+0.25
Latitude
0.00
Y-axis
Latitude=− 0.25
Angle
45°
45°
X-axis
0.00
Longitude