Blur filter

The BlurFilter class smears, or blurs, a display object and its contents. Blur effects are useful for giving the impression that an object is out of focus or for simulating fast movement, as in a motion blur. By setting the quality property of the blur filter to low, you can simulate a softly out-of-focus lens effect. Setting the quality property to high results in a smooth blur effect similar to a Gaussian blur.

The following example creates a circle object using the drawCircle() method of the Graphics class and applies a blur filter to it:

import flash.display.Sprite; 
import flash.filters.BitmapFilterQuality; 
import flash.filters.BlurFilter; 
 
// Draw a circle. 
var redDotCutout:Sprite = new Sprite(); 
redDotCutout.graphics.lineStyle(); 
redDotCutout.graphics.beginFill(0xFF0000); 
redDotCutout.graphics.drawCircle(145, 90, 25); 
redDotCutout.graphics.endFill(); 
 
// Add the circle to the display list. 
addChild(redDotCutout); 
 
// Apply the blur filter to the rectangle. 
var blur:BlurFilter = new BlurFilter(); 
blur.blurX = 10; 
blur.blurY = 10; 
blur.quality = BitmapFilterQuality.MEDIUM; 
redDotCutout.filters = [blur];