|Class||public class Blur|
qualityproperty of this filter is set to low, the result is a softly unfocused look. When the
qualityproperty is set to high, it approximates a Gaussian blur filter. You can apply the filter to any display object (that is, objects that inherit from the DisplayObject class), such as MovieClip, SimpleButton, TextField, and Video objects, as well as to BitmapData objects.
To create a new filter, use the constructor
The use of filters depends on the object to which you apply the filter:
filtersproperty (inherited from DisplayObject). Setting the
filtersproperty of an object does not modify the object, and you can remove the filter by clearing the
applyFilter()on a BitmapData object takes the source BitmapData object and the filter object and generates a filtered image as a result.
If you apply a filter to a display object, the
cacheAsBitmap property of the
display object is set to
true. If you remove all filters, the original value of
cacheAsBitmap is restored.
This filter supports Stage scaling. However, it does not support general scaling,
rotation, and skewing. If the object itself is scaled (
scaleY are not set to 100%), the
filter effect is not scaled. It is scaled only when the user zooms in on the Stage.
A filter is not applied if the resulting image exceeds the maximum dimensions. In AIR 1.5 and Flash Player 10, the maximum is 8,191 pixels in width or height, and the total number of pixels cannot exceed 16,777,215 pixels. (So, if an image is 8,191 pixels wide, it can only be 2,048 pixels high.) In Flash Player 9 and earlier and AIR 1.1 and earlier, the limitation is 2,880 pixels in height and 2,880 pixels in width. If, for example, you zoom in on a large movie clip with a filter applied, the filter is turned off if the resulting image exceeds the maximum dimensions.
|blurX : Number|
The amount of horizontal blur.
|blurY : Number|
The amount of vertical blur.
|quality : int|
The number of times to perform the blur.
Blur(blurX:Number = 4, blurY:Number = 4, quality:int = 1)
Initializes the filter with the specified parameters.
Returns new blur filter
The amount of horizontal blur. Valid values are from 0 to 255 (floating point). The default value is 4. Values that are a power of 2 (such as 2, 4, 8, 16 and 32) are optimized to render more quickly than other values.
public function get blurX():Number
public function set blurX(value:Number):void
The amount of vertical blur. Valid values are from 0 to 255 (floating point). The default value is 4. Values that are a power of 2 (such as 2, 4, 8, 16 and 32) are optimized to render more quickly than other values.
public function get blurY():Number
public function set blurY(value:Number):void
The number of times to perform the blur. The default value is BitmapFilterQuality.LOW, which is equivalent to applying the filter once. The value BitmapFilterQuality.MEDIUM applies the filter twice; the value BitmapFilterQuality.HIGH applies it three times and approximates a Gaussian blur. Filters with lower values are rendered more quickly. For most applications, a quality value of low, medium, or high is sufficient. Although you can use additional numeric values up to 15 to increase the number of times the blur is applied, higher values are rendered more slowly. Instead of increasing the value of quality, you can often get a similar effect, and with faster rendering, by simply increasing the values of the blurX and blurY properties.You can use the following BitmapFilterQuality constants to specify values of the quality property:BitmapFilterQuality.LOWBitmapFilterQuality.MEDIUMBitmapFilterQuality.HIGH
public function get quality():int
public function set quality(value:int):void
public function Blur(blurX:Number = 4, blurY:Number = 4, quality:int = 1)
Initializes the filter with the specified parameters. The default values create a soft, unfocused image.Parameters
public function getFilter():BlurFilter
Returns new blur filterReturns