PRG Mbox Designer Manual 3.9 - Manual (Page 28)

20 MBOX ® MEDIA SERVER USER MANUAL
Keystone Mode (including Curve)
Mbox's Art-Net/sACN keystone functionality has three (3) different modes. Each mode uses the eight primary control
parameters (1a - 4b) differently to modify the keystone surface. Each mode also has three curve settings for the edge-
blending.
Note: The default value for the Keystone mode parameter is 0. At this value, if keystone/warp settings have been
created using Mbox Remote, then the Art-Net/sACN controls will be ignored and overridden by the settings from
Mbox Remote.
+ Corner Adjustment with Steep/Medium/Shallow Blend Curve - In this mode each of the four pairs of controls
can be used to move the X/Y position of one corner of the keystone surface towards the center. If an edge blend
is applied, the blend can have a steep curve (less distance between the opaque and transparent edges of the
blend), a medium curve (medium distance), or a shallow curve (more distance).
+ Rotation + Aspect Adjustment with Steep/Medium/Shallow Blend Curve - In this mode the first and second
pairs of controls provide 16-bit control over the X and Y rotation of the keystone surface. The third pair of controls
provides combined horizontal and vertical linearity control. The fourth pair of controls has no function.
+ Rotation + Aspect + Curved Surface Adjustment with Steep/Medium/Shallow Blend Curve - In this mode the
first and second pairs of controls provide 16-bit control over the X and Y rotation of the keystone surface. The
third pair of controls provides combined horizontal and vertical linearity control. The fourth pair of controls provide
controls to adjust the curvature of the keystone surface.
Keystone Position
The Position parameters can be used to move the entire keystone surface left/right and up/down so as to achieve a
more accurate alignment with the surface that is being projected upon. Keystone position can be adjusted even
without any other keystone controls being changed, giving the impression of a linear translation of the overall Mbox
output.
Keystone Scale
The Scale parameter can be used to scale down the entire keystone surface so as to achieve a more accurate
alignment with the surface that is being projected upon. Keystone scale can be adjusted even without any other
keystone controls being changed, giving the impression of reducing the overall size of the Mbox output.
Keystone Rotation
The Rotation parameter can be used to rotate the entire keystone surface so as to achieve a more accurate alignment
with the surface that is being projected upon. Keystone rotation can be adjusted even without any other keystone
controls being changed, giving the impression of rotating the overall Mbox output.
Keystone Edge Blend Controls
The positions of the eight primary keystone controls create linear edges for the keystone surface. To better allow the
output of an Mbox server to be blended with the output of an adjacent server, each side of the keystone surface can
have a blend applied independently. The blend will be parallel to the corresponding edge of the keystone surface.
As noted in the previous Keystone Modes description, there are three blend curves for the Art-Net/sACN controlled
keystoning: Steep, Medium, and Shallow.
Keystone Tile Mode
The Tile mode provides a quick method of virtually setting the Keystone Position and Scale parameters to preset
values such that only a portion of the keystone surface is visible. Tiling is intended be used when two or more Mbox
servers are used together to create a regularly divided array (linear or rectangular) where each server outputs a portion
of the whole.
The built-in modes allow for 2x2, 3x3, and 4x4 arrays. Arrays with different limits can be created by PRG on an as-
needed basis. (Please contact
[email protected] for more information.)