PRG Mbox Designer Manual 3.8 - Manual (Page 207)

MBOX ® MEDIA SERVER USER MANUAL 199
Note: Reducing the Sample width or height will result in the image becoming larger on the corresponding axis. This is
because less of the texture is being displayed, but since the Context has not changed size, fewer pixels will be
stretched across the same area.
When a positive overlap is entered during output configuration, the outputs will be offset along the X-axis to create the
necessary overlap.
The Vignette settings are used to apply a vignette (i.e. edge-blend) to each output. A vignette will be added to the
appropriate side(s) of the output by default if you enter a positive overlap value when you configure the output. Even
with no overlap or a negative overlap, you can manually add a vignette by clicking on the Options pop-up above the
column list of Identities and selecting Add Vignette.
By default, the vignette is created with the same size as the Sample. When a positive overlap is applied, each output
receives vignettes on the overlapping sides. Vignettes can be added to any side by clicking the checkbox next to
each side. Each vignette will receive a default curve of Cosine, an Amount (width in pixels) equal to the overlap width,
and a Power of 1.0.
You can view guide lines for vignettes by setting the Master HUD parameter to a value of 222 and then
performing a media rescan [
 R] on the Mbox server. To disable the guide lines, set the HUD parameter to a
value other than 222 and perform another rescan.
There are three available curves: Cosine, Raised Cosine, and Linear.
+ For the Cosine and Raised Cosine curves, increasing the Power setting increases the width of the blend curve in
the direction of the center of the image.
+ For the Linear curve, increasing the Power setting compresses the blend curve towards the center of the blend
area.
Outputs that overlap each other should use the same curve type for best results.
Projection > Output Setup > Keystone/Warp
You must create a keystone/warp setup for each output in a multihead setup. To to this, select Create Keystone/Warp
from the Options pop-up to enable Keystone or Warp functionality. The interface will default to Keystone mode.
Switch to Warp mode by clicking on the relevant radio button at the bottom of the window.
Keystone mode is shown as a 3x3 array of rectangles, with five of the rectangles having large, blue points and the
other four rectangles having small blue points. The points are a visual reference for the amount of transformation of