Fixture, layer and parameter details, Ambient light and spot lights 1 - 4, Camera – PRG Mbox Designer User Manual v3.6.1 User Manual

Page 24: Shutter control, Keystone control

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MBOX

®

MEDIA SERVER USER MANUAL

Fixture, Layer and Parameter Details

Ambient Light and Spot Lights 1 - 4

The Ambient and Spotlight fixtures are used to light 3D objects or digital gobos and have no effect upon textures used
as backgrounds. Each lighting fixture has an intensity parameter along with color controls for red, green and blue.

Guidelines:

+

If no lights are turned on (i.e., have an intensity level above 0), then the 3D objects will not be visible on the screen.

Camera

The Camera fixture is primarily used to adjust the perspective view of 3D objects. Control options include orbit, dolly,
roll, spin, field of view, pitch, and yaw. The Camera’s secondary function is to provide mastering controls for the final
output color, intensity, pixel-mapping intensity and control, and audio output volume.

The Camera fixture has overall color mixing and two texture effects that affect the composite image created by the
twelve content layers.

Guidelines:

+

The Camera intensity level must be above 0 to see any output from the stage output connectors on the I/O
module.

+

Textures that are not applied to 3D objects or digital gobos are referred to as

backgrounds

. Backgrounds remain

in a fixed positional relationship to the camera. The camera cannot move around them as it can with 3D objects
and digital gobos.

IMPORTANT! When using the MBOX Dual I/O Module, the Camera fixture intensity controls the built-in hardware
dimmer on the I/O module. If this channel is at 0, there will be no visible output from the I/O module’s stage outputs –
though there will be output on the module’s preview outputs.

Shutter Control

MBOX has shutters, much like a Leko, which can be used to mask off areas of the final image. The shutters can be
thought of as sitting in between the camera and the layers. They do not affect any one layer or group of layers, only
the final image. Shutters can be positioned, scaled, rotated, colored, and softened.

Guidelines:

+

The first channel of the Shutter fixture (mode) controls the mode/shape of the shutters; it must be set to a value
other than default to activate the shutters.

+

Each shutter has two channels of control for its position/angle. These channels operate differently depending on
the chosen shutter mode: two depth controls in moving light mode, or depth and angle controls in Leko mode.

Keystone Control

The Keystone fixture allows the final output image to be "straightened up" (i.e., squared) in case it is being projected
onto a surface with an irregular angle. This is accomplished by controlling geometrical keystone adjustments, edge
blending, and tiling. To allow precise keystone corrections, there are individual X and Y controls for each corner of the
output. Scale, rotation and overall X/Y position controls allow further manipulation of the keystone frame.

If using arrayed display devices to create one larger image, MBOX can assist with edge blending and tiling. There are
four independent edge blend controls and three blending curves that may be selected: steep, medium, and shallow.
The tile mode, tile scale, and tile overlap controls allow it to automatically subdivide or "tile" a single image to play on
multiple display devices. With the tile mode control it is possible to select a 2 x 2, 3 x 3, or 4 x 4 array and the grid
position within that array which corresponds to the desired position for each server’s output. To help in creating the
best edge blend between servers, the tile scale and overlap controls allow control of how large the image is and the
overlap between each server’s output.

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