1 inside an ellipse, 0 outside. radius is in units of the image's longer side; feather in [0, 1] is the fraction of the radius over which it fades out (0 = hard edge).
radius
feather
Readonly
Optional
Swap inside and outside.
Multiplies the mask (after inverting), in [0, 1]. Default 1.
1 inside an ellipse, 0 outside.
radiusis in units of the image's longer side;featherin [0, 1] is the fraction of the radius over which it fades out (0 = hard edge).