User Manual

Alpha Mode
The Alpha mode is used to control how the Catcher combines the Alpha channels from multiple
projectors. It has no effect on the results when only one projector is in the scene. This control is
designed to work with the software renderer in the Renderer 3D node,and has no effect when
using the OpenGL renderer.
Threshold
The Threshold can be used to exclude certain low values from the accumulation calculation. For
example, when using the Median Accumulation mode, a threshold of 0.01 would exclude any
pixel with a value of less than 0.01 from the median calculation.
Restrict by Projector ID
When active, the Catcher only receives light from projectors with a matching ID. Projectors with
a different ID are ignored.
Material ID
This slider sets the numeric identifier assigned to this material. This value is rendered into the
MatID auxiliary channel if the corresponding option is enabled in the Renderer 3D node.
Common Controls
Settings Tab
The Settings tab in the Inspector is duplicated in other 3D nodes. These common controls are
described in detail at the end of this chapter in “The Common Controls” section.
CubeMap [3CU]
The CubeMap node
Cube Map Node Overview
The Cube Map node creates texture maps using separate images for each face of the cube. It
can also extract the individual faces of the cube from a single image containing an unfolded
cube in the Vertical or Horizontal Cross layouts.
A cube map is produced by mounting six cameras at 90 degrees angle of views to point up,
down, left, right, front, and back.
The node provides options to set the reference coordinate system and rotation for the resulting
texture map. The Cube Map node is typically used to produce environment maps for distant
areas (such as skies or horizons) or reflection and refraction maps.
Chapter – 83 3D Texture Nodes 1801