User Manual

Controls Tab
The From Image controls tab in the Inspector is used to select the node that contains the image
you want to sample. It allows you to define the starting and ending point in the image as well as
how many color samples to use in creating the gradient.
Image to Scan
Drop into this box the node from the Node Editor that you want to be color sampled.
Start X/Y, End X/Y
These two point controls define the Start and End points of the line along which the samples
are taken from the image defined in the Image to Scan box.
The points can also be moved directly in the viewer.
Number of Sample Steps
This defines how many individual color samples are taken along the line. You can also see the
result of this setting when you look at the actual node’s Gradient control. The more sample
steps you define here, the more individual color stops appear on the Gradient control. It is also
possible to first create a gradient using the From Image modifier and then remove that modifier
from the Gradient control again. The created gradient stays intact and can then be fine
tuned by hand.
Edges
Edges determines how the edges of the image are treated when the sample line extends over
the actual frame of the image to be sampled.
Black
This outputs black for every point on the sample line outside of the image bounds.
Wrap
This wraps the edges of the line around the borders of the image.
Duplicate
This causes the edges of the image to be duplicated as best as possible, continuing the image
beyond its original size.
Color
This outputs a user-definable color instead of black for every point on the sample line outside
of the image bounds.
Example
The source image on the left shows the color selection line in red.
Theimage on the right shows the resulting gradient from that selection.
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