Create a full frame size rounded square.
- Tools -> Roto -> Rounded square
- Enter hardness value
- A Roto node with a full frame size rounded square.
- Copy 'roundedSquare' folder in your .Natron folder.
- Add following lines to your 'initGui.py' file, where
<path>is the location of 'roundedSquare' folder.
from <path>.roundedSquare.roundedSquare import *
NatronGui.natron.addMenuCommand('Tools/Roto/Rounded square','roundedSquare()')