The center of the shutter. The valus is a percentage of the image size. Default value is 0.5, 0.5.
This effect uses the Center, Width and Height properties to construct the shutter area. The area outside the shutter are cleared using the color set in the ClearColor property.
For XAML example, refer to RectangularShutterEffect.
For C#/VB examples, refer to RectangularShutterEffect.