User Manual

Inputs
The Copy Aux node includes two inputs: one for the main image and the other for an
effect mask.
–
Input: This orange input is the only required connection. It connects a 2D image for
the Copy Aux node operation.
–
Effect Mask: The optional blue effect mask input accepts a mask shape created
by polylines, basic primitive shapes, paint strokes, or bitmaps from other tools.
Connecting a mask to this input limits the Copy Aux operation to only those pixels
within the mask. An effect mask is applied to the tool after the tool is processed.
Basic Node Setup
The Copy Aux node, like many 2D image-processing nodes, receives a 2D image like a Loader
node or the MediaIn1 shown below. The output continues the node tree by connecting to
another 2D image-processing node or a Merge node.
A Copy Aux node applied to a MediaIn1 node
Inspector
Controls Tab
The Controls tab is used to copy auxiliary channel groups into RGBA channels. Although Copy
Aux has quite a few options, most of the time you select only the channel to copy and ignore
the remaining functionality.
Mode
The Mode menu determines whether the auxiliary channel is copied into the RGBA color
channel (Aux to Color) or vice versa (Color to Aux). Using this option, you can use one Copy Aux
node to bring an auxiliary channel into color, do some compositing operations on it, and then
use another Copy Aux node to write the color back into the auxiliary channel. When the Mode
is set to Color to Aux, all the options in the Controls tab except the Aux Channel menu
are hidden.
Chapter – 85 Color Nodes 1881