This article shows how to use Feather in the demo application.

There are two ways to aplply a feathered area to your image.

1. Use mouse to select a rectangle on the image. Select menu - [Filter] -> [Feather] -> [Do Feather with Selected Rectangle].
2. Select menu - [Filter] -> [Feather] -> [Configurate Feather Builder], you can do some simple customer feather.

The following figure shows the second way:

And then you will see the following dialog:

Select a light yellow as background color, and choose Ellipse style, press OK. You will see a feathered image like below:

The upper image is generated by Controller.Feather method. You could see the source code in the demo application project. The code actually performs the following steps:

•  Creates a FeatherBuilder object.
•  Assign the background color.
•  Build an ellipse feather mask by calling BuildEllipseMask method.
•  Specify the Band of the Feather effect.
•  Call PhotoController.Feather method by passing the FeatherBuilder class.

The following figure shows the Door feather effect :

The mask is built with BuildPathMask method. With other methods in FeatherBuilder, you can easily customize your desire feather mask.