User Manual

Table Of Contents
Minimum: Comparing the input mask’s values and the new mask, displays the lowest
(minimum) value.
Maximum: Comparing the input mask’s values and the new mask, displays the highest
(maximum) value.
Average: This calculates the average (half the sum) of the new mask and the input
mask.
Multiply: This multiplies the values of the input mask by the new mask’s values.
Replace: The new mask completely replaces the input mask wherever they intersect.
Areas that are zero (completely black) in the new mask do not affect the input mask.
Invert: Areas of the input mask that are covered by the new mask are inverted; white
becomes black and vice versa. Gray areas in the new mask are partially inverted.
Copy: This mode completely discards the input mask and uses the new mask for all
values.
Ignore: This mode completely discards the new mask and uses the input mask for all
values.
Invert
Selecting this checkbox inverts the entire mask. Unlike the Invert Paint mode, the checkbox
affects all pixels, regardless of whether the new mask covers them or not.
Common Controls
Image and Settings Tabs
The Image and Settings tabs in the Inspector are also duplicated in other mask nodes. These
common controls are described in detail at the end of this chapter in “The Common
Controls” section.
Polygon Mask [PLY]
The Polygon node
Polygon Mask Node Introduction
The Polygon mask is most useful for masking objects that do not have a regular shape. When
first added to a node, the Polygon mask consists of only Center and Angle controls, which are
visible onscreen. Points are added to the polyline by clicking in the viewer. Each new point is
connected to the last one created.
Like the B-Spline mask tool, the Polygon mask auto-animates. Adding this node to the Node
Editor adds a keyframe to the current frame. Moving to a new frame and changing the shape
creates a new keyframe and interpolate between the two defined shapes.
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