This mask is defined through a polygon and a feather parameter.
To edit the points of the polygon, you need to use the
Edit Mode
Allow to edit quickly some layers parameters
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of the
Viewport
Preview and edit your content
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:
The
Edit Mode
Allow to edit quickly some layers parameters
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is relevant to the currently selected element in the
Element Tree
The hierarchical structure of Smode elements
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, so take care that the polygonal mask is currently selected.
Now, press
[CTRL]
and click in the
Viewport
Preview and edit your content
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to create points:
When there are more than two points but the polygonal mask is not closed, it will display a 50% overlay on the whole image.
To close the mask,
[CTRL] + [CLICK]
on the first point:
The points of the polygon can be moved at anytime by dragging them in the
Viewport
Preview and edit your content
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.
The only necessary thing is to be in
Edit Mode
Allow to edit quickly some layers parameters
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with the polygonal mask currently selected.
To animate a polygonal mask, just drag and drop the "polygonal mask points" parameter inside of the
Timeline
Timelines allow for easy playback, cutting, and editing of video layers, as well as animation of layers and their parameters, editable with the Timeline Editor.
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. Now each key you'll add on this parameters will concern every point of the mask :
You could also animate all the mask by using
Exposed Parameter
Allow to control multiple Link Target with a single value
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on the "Points" parameters.
