Feather Parameter

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About Feather concept

Feather is a float value in points (or whatever unit you have defined in File > Setup > Misc > Unit System) that represent the width of the area that is going to be dissolved at the edge. Feather is the light horny waterproof structure forming the external covering of birds. See English Feather definition

Feather Parameter is an standard parameter for the following types of layers:

Strangely Rectangle Layer doesn't have the Feather Parameter.

When you apply a Feather to any of those layers, then the edge of the shape becomes dissolved and spread out and shrunk the amount that the Feather value indicates.

Circle Feather zero.png Circle Feather 20.png
Circle with Feather set to 0 points Circle with Feather set to 20 points

Feather's complementary parameters

There is specific parameters that work together with the Feather Parameter. That parameter is the type of Feather. For Circle Layers the parameter is called Fall Off and for the rest of feather able layers is called Type of Feather.

Type of Feather

This complementary parameter can be set to Outline Layer, Region Layer, Polygon Layer and Star Layer. All the samples have the same amount of Feather (set to 20 points).

Fast Gaussian Blur

Star Feather Fast Gaussian Blur.png

Gaussian Blur

Star Feather Gaussian Blur.png

Disc Blur

Star Feather Disc Blur.png

Box Blur

Star Feather Box Blur.png

Cross-Hatch Blur

Star Feather Cross-Hatch Blur.png

Fall Off

That's the type of feather for the Circle Layer. All the samples have the same amount of Feather (set to 20 points).

Square Root

Circle Feather 20.png


Circle Feather Square.png


Circle Feather Linear.png


Circle Feather Sigmond.png


Circle Feather Cosine.png

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