패키지 | spark.filters |
클래스 | public class BlurFilter |
상속 | BlurFilter BaseFilter EventDispatcher Object |
구현 | IBitmapFilter |
언어 버전: | ActionScript 3.0 |
제품 버전: | Flex 4 |
런타임 버전: | Flash Player 10, AIR 1.5 |
quality
property
of this filter is set to low, the result is a softly unfocused look.
When the quality
property 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 new BlurFilter()
.
The use of filters depends on the object to which you apply the filter:
- To apply filters to movie clips, text fields, buttons, and video, use the
filters
property (inherited from DisplayObject). Setting thefilters
property of an object does not modify the object, and you can remove the filter by clearing thefilters
property. - To apply filters to BitmapData objects, use the
BitmapData.applyFilter()
method. CallingapplyFilter()
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 (scaleX
and 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.) 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.
MXML 구문MXML 구문 숨기기The <s:BlurFilter>
tag inherits all of the tag
attributes of its superclass and adds the following tag attributes:
<s:BlurFilter Properties blurX="4.0" blurY="4.0" quality="low" />
기타 예제
관련 API 요소
flash.display.DisplayObject.filters
flash.display.DisplayObject.cacheAsBitmap
flash.display.BitmapData.applyFilter()
속성 | 정의 주체 | ||
---|---|---|---|
blurX : Number
The amount of horizontal blur. | BlurFilter | ||
blurY : Number
The amount of vertical blur. | BlurFilter | ||
constructor : Object
지정된 객체 인스턴스의 클래스 객체 또는 생성자 함수에 대한 참조입니다. | Object | ||
quality : int
The number of times to apply the filter. | BlurFilter |
메서드 | 정의 주체 | ||
---|---|---|---|
Constructor. | BlurFilter | ||
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
리스너에서 이벤트 알림을 받을 수 있도록 EventDispatcher 객체에 이벤트 리스너 객체를 등록합니다. | EventDispatcher | ||
Returns a copy of this filter object. | BlurFilter | ||
이벤트를 이벤트 흐름으로 전달합니다. | EventDispatcher | ||
EventDispatcher 객체에 특정 유형의 이벤트에 대한 리스너가 등록되어 있는지 여부를 확인합니다. | EventDispatcher | ||
지정된 속성이 객체에 정의되어 있는지 여부를 나타냅니다. | Object | ||
Object 클래스의 인스턴스가 매개 변수로 지정된 객체의 프로토타입 체인에 있는지 여부를 나타냅니다. | Object | ||
Propagates a change event when the filter has changed. | BaseFilter | ||
지정된 속성이 존재하고 열거 가능한지 여부를 나타냅니다. | Object | ||
EventDispatcher 객체에서 리스너를 제거합니다. | EventDispatcher | ||
루프 작업에서 동적 속성을 사용할 수 있는지 여부를 설정합니다. | Object | ||
로캘별 규칙에 따라 서식이 지정된 이 객체의 문자열 표현을 반환합니다. | Object | ||
지정된 객체의 문자열 표현을 반환합니다. | Object | ||
지정된 객체의 프리미티브 값을 반환합니다. | Object | ||
이 EventDispatcher 객체 또는 조상 객체에 지정한 이벤트 유형에 대한 이벤트 리스너가 등록되어 있는지 여부를 확인합니다. | EventDispatcher |
blurX | 속성 |
blurX:Number
언어 버전: | ActionScript 3.0 |
제품 버전: | Flex 4 |
런타임 버전: | Flash Player 10, AIR 1.5 |
The amount of horizontal blur. Valid values are 0 to 255. A blur of 1 or less means that the original image is copied as is. 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.
기본값: 4.0.
구현
public function get blurX():Number
public function set blurX(value:Number):void
blurY | 속성 |
blurY:Number
언어 버전: | ActionScript 3.0 |
제품 버전: | Flex 4 |
런타임 버전: | Flash Player 10, AIR 1.5 |
The amount of vertical blur. Valid values are 0 to 255. A blur of 1 or less means that the original image is copied as is. 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.
기본값: 4.0.
구현
public function get blurY():Number
public function set blurY(value:Number):void
quality | 속성 |
quality:int
언어 버전: | ActionScript 3.0 |
제품 버전: | Flex 4 |
런타임 버전: | Flash Player 10, AIR 1.5 |
The number of times to apply the filter. 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. 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 achieve different effects, 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.
기본값: "low".
구현
public function get quality():int
public function set quality(value:int):void
BlurFilter | () | 생성자 |
public function BlurFilter(blurX:Number = 4.0, blurY:Number = 4.0, quality:int = 1)
언어 버전: | ActionScript 3.0 |
제품 버전: | Flex 4 |
런타임 버전: | Flash Player 10, AIR 1.5 |
Constructor. The default values create a soft, unfocused image.
매개 변수blurX:Number (default = 4.0 ) — The amount to blur horizontally. Valid values are from 0 to 255.0 (floating-point
value).
| |
blurY:Number (default = 4.0 ) — The amount to blur vertically. Valid values are from 0 to 255.0 (floating-point
value).
| |
quality:int (default = 1 ) — The number of times to apply the filter. You can specify the quality using
the flash.filters.BitmapFilterQuality constants:
High quality approximates a Gaussian blur. For most applications, these three values are sufficient. Although you can use additional numeric values up to 15 to achieve different effects, be aware that higher values are rendered more slowly. |
clone | () | 메서드 |
public function clone():BitmapFilter
언어 버전: | ActionScript 3.0 |
제품 버전: | Flex 4 |
런타임 버전: | Flash Player 10, AIR 1.5 |
Returns a copy of this filter object.
반환값BitmapFilter — A new BlurFilter instance with all the same
properties as the original BlurFilter instance.
|
<?xml version="1.0"?> <!-- filters/examples/BlurFilterExample.mxml --> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:s="library://ns.adobe.com/flex/spark" creationComplete="createFilters()"> <fx:Script><![CDATA[ import spark.filters.*; import flash.filters.BitmapFilterQuality; import flash.filters.BitmapFilterType; private var myBlurFilter:BlurFilter; private var color:Number = 0xFF33FF; public function createFilters():void { myBlurFilter = new BlurFilter(3, 3, BitmapFilterQuality.MEDIUM); b1.filters = [myBlurFilter]; } ]]></fx:Script> <s:VGroup> <!-- This button has a filter applied in ActionScript. --> <s:Button id="b1" label="Click me"/> <!-- This button has a filter applied in MXML. --> <s:Button id="b2" label="Click me"> <s:filters> <s:BlurFilter blurX="3" blurY="3" quality="{BitmapFilterQuality.MEDIUM}"/> </s:filters> </s:Button> </s:VGroup> </s:Application>
Tue Jun 12 2018, 03:17 PM Z