| Pacchetto | spark.filters |
| Classe | public class ConvolutionFilter |
| Ereditarietà | ConvolutionFilter  BaseFilter EventDispatcher Object |
| Implementa | IBitmapFilter |
| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
To create a convolution filter, use the syntax new ConvolutionFilter().
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
filtersproperty (inherited from DisplayObject). Setting thefiltersproperty of an object does not modify the object, and you can remove the filter by clearing thefiltersproperty. - 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 value of the cacheAsBitmap property of the
object is set to true. If you clear all filters, the original value of
cacheAsBitmap is restored.
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.) For example, if you zoom in on a large movie clip with a filter applied, the filter is turned off if the resulting image exceeds maximum dimensions.
Sintassi MXML
Mostra sintassi MXML
Nascondi sintassi MXMLThe <s:ConvolutionFilter> tag inherits all of the tag
attributes of its superclass and adds the following tag attributes:
<s:ConvolutionFilter Properties alpha="1" clamp="true" color="0xFF0000" divisor="1.0" matrix="[]" matrixX="0" matrixY="0" preserveAlpha="true" />
| Proprietà | Definito da | ||
|---|---|---|---|
| alpha : Number
The alpha transparency value for the color. | ConvolutionFilter | ||
| bias : Number
The amount of bias to add to the result of the matrix transformation. | ConvolutionFilter | ||
| clamp : Boolean
Indicates whether the image should be clamped. | ConvolutionFilter | ||
| color : uint
The color of the glow. | ConvolutionFilter | ||
 | constructor : Object
Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto. | Object | |
| divisor : Number
The divisor used during matrix transformation. | ConvolutionFilter | ||
| matrix : Array
The amount of horizontal blur. | ConvolutionFilter | ||
| matrixX : Number
The x dimension of the matrix (the number of rows in the matrix). | ConvolutionFilter | ||
| matrixY : Number
The y dimension of the matrix (the number of columns in the matrix). | ConvolutionFilter | ||
| preserveAlpha : Boolean
Indicates if the alpha channel is preserved without the filter effect or
if the convolution filter is applied to the alpha channel as well as the
color channels. | ConvolutionFilter | ||
| Metodo | Definito da | ||
|---|---|---|---|
ConvolutionFilter(matrixX:Number = 0, matrixY:Number = 0, matrix:Array = null, divisor:Number = 1.0, bias:Number = 0.0, preserveAlpha:Boolean = true, clamp:Boolean = true, color:uint = 0, alpha:Number = 0.0)
Constructor. | ConvolutionFilter | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registra un oggetto listener di eventi con un oggetto EventDispatcher, in modo che il listener riceva la notifica di un evento. | EventDispatcher | |
Returns a copy of this filter object. | ConvolutionFilter | ||
|
Invia un evento nel flusso di eventi. | EventDispatcher | |
|
Verifica se per l'oggetto EventDispatcher sono presenti listener registrati per un tipo specifico di evento. | EventDispatcher | |
|
Indica se per un oggetto è definita una proprietà specifica. | Object | |
|
Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro. | Object | |
|
Propagates a change event when the filter has changed. | BaseFilter | |
|
Indica se la proprietà specificata esiste ed è enumerabile. | Object | |
|
Rimuove un listener dall'oggetto EventDispatcher. | EventDispatcher | |
|
Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche. | Object | |
|
Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate. | Object | |
|
Restituisce la rappresentazione in formato stringa dell'oggetto specificato. | Object | |
|
Restituisce il valore di base dell'oggetto specificato. | Object | |
|
Verifica se un listener di eventi è registrato con questo oggetto EventDispatcher o qualsiasi suo antenato per il tipo di evento specificato. | EventDispatcher | |
alpha | proprietà |
alpha:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The alpha transparency value for the color. Valid values are 0 to 1. For example, .25 sets a transparency value of 25%.
Il valore predefinito è 1.
Implementazione
public function get alpha():Number public function set alpha(value:Number):voidbias | proprietà |
bias:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The amount of bias to add to the result of the matrix transformation. The bias increases the color value of each channel, so that dark colors appear brighter.
Il valore predefinito è 0.
Implementazione
public function get bias():Number public function set bias(value:Number):voidclamp | proprietà |
clamp:Boolean| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Indicates whether the image should be clamped. For pixels off the source image, a value of true indicates that the input image is extended along each of its borders as necessary by duplicating the color values at each respective edge of the input image. A value of false indicates that another color should be used, as specified in the color and alpha properties.
Il valore predefinito è true.
Implementazione
public function get clamp():Boolean public function set clamp(value:Boolean):voidcolor | proprietà |
color:uint| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The color of the glow. Valid values are in the hexadecimal format 0xRRGGBB.
Il valore predefinito è 0xFF0000.
Implementazione
public function get color():uint public function set color(value:uint):voiddivisor | proprietà |
divisor:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The divisor used during matrix transformation. The default value is 1. A divisor that is the sum of all the matrix values smooths out the overall color intensity of the result. A value of 0 is ignored and the default is used instead.
Il valore predefinito è 1.0.
Implementazione
public function get divisor():Number public function set divisor(value:Number):voidmatrix | proprietà |
matrix:Array| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | 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.
Il valore predefinito è [].
Implementazione
public function get matrix():Array public function set matrix(value:Array):voidmatrixX | proprietà |
matrixX:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The x dimension of the matrix (the number of rows in the matrix).
Il valore predefinito è 0.
Implementazione
public function get matrixX():Number public function set matrixX(value:Number):voidmatrixY | proprietà |
matrixY:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The y dimension of the matrix (the number of columns in the matrix).
Il valore predefinito è 0.
Implementazione
public function get matrixY():Number public function set matrixY(value:Number):voidpreserveAlpha | proprietà |
preserveAlpha:Boolean| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Indicates if the alpha channel is preserved without the filter effect or if the convolution filter is applied to the alpha channel as well as the color channels. A value of false indicates that the convolution applies to all channels, including the alpha channel. A value of true indicates that the convolution applies only to the color channels.
Il valore predefinito è true.
Implementazione
public function get preserveAlpha():Boolean public function set preserveAlpha(value:Boolean):voidConvolutionFilter | () | Funzione di costruzione |
public function ConvolutionFilter(matrixX:Number = 0, matrixY:Number = 0, matrix:Array = null, divisor:Number = 1.0, bias:Number = 0.0, preserveAlpha:Boolean = true, clamp:Boolean = true, color:uint = 0, alpha:Number = 0.0)| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Constructor.
ParametrimatrixX:Number (default = 0) | |
matrixY:Number (default = 0) | |
matrix:Array (default = null)matrixX * matrixY.
| |
divisor:Number (default = 1.0) | |
bias:Number (default = 0.0) | |
preserveAlpha:Boolean (default = true)false indicates that the alpha value is not
preserved and that the convolution applies to all
channels, including the alpha channel. A value of true indicates that
the convolution applies only to the color channels. The default value is true.
| |
clamp:Boolean (default = true)true indicates that the
input image is extended along each of its borders as necessary by duplicating the color values
at the given edge of the input image. A value of false indicates that another
color should be used, as specified in the color and alpha properties.
The default is true.
| |
color:uint (default = 0) | |
alpha:Number (default = 0.0) |
clone | () | metodo |
public function clone():BitmapFilter| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Returns a copy of this filter object.
RestituisceBitmapFilter — BitmapFilter A new ConvolutionFilter instance with all the same properties as the original
ConvolutionMatrixFilter instance.
|
<?xml version="1.0"?>
<!-- filters/examples/ConvolutionGlowFilterExample .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 myOutlineConvolutionFilter:ConvolutionFilter;
private var mySharpnessConvolutionFilter:ConvolutionFilter;
private var myBrightnessConvolutionFilter:ConvolutionFilter;
private var outlineMatrix:Array = [ -30, 30, 0,
-30, 30, 0,
-30, 30, 0 ];
private var sharpnessMatrix:Array = [0, -1, 0,
-1, 20, -1,
0, -1, 0];
private var brightnessMatrix:Array = [2, 2, 2,
2, 0, 2,
2, 2, 2];
public function createFilters():void {
myOutlineConvolutionFilter = new ConvolutionFilter(3, 3, outlineMatrix, 9, 0, true, true, 0x00CC99, 0);
mySharpnessConvolutionFilter = new ConvolutionFilter(3, 3, sharpnessMatrix, 9, 0, true, true, 0x00CC99, 0);
myBrightnessConvolutionFilter = new ConvolutionFilter(3, 3, brightnessMatrix, 3, 0, true, true, 0x00CC99, 0);
outlineImage.filters = [myOutlineConvolutionFilter];
sharpnessImage.filters = [mySharpnessConvolutionFilter];
brightnessImage.filters = [myBrightnessConvolutionFilter];
}
]]></fx:Script>
<s:VGroup>
<s:VGroup>
<s:Label text="Original Image"/>
<mx:Image id="originalImage" source="@Embed(source='assets/Nokia_6630.png')"/>
</s:VGroup>
<s:VGroup>
<s:Label text="Outline Matrix Image"/>
<mx:Image id="outlineImage" source="@Embed(source='assets/Nokia_6630.png')"/>
</s:VGroup>
<s:VGroup>
<s:Label text="Sharpness Matrix Image"/>
<mx:Image id="sharpnessImage" source="@Embed(source='assets/Nokia_6630.png')"/>
</s:VGroup>
<s:VGroup>
<s:Label text="Brightness Matrix Image"/>
<mx:Image id="brightnessImage" source="@Embed(source='assets/Nokia_6630.png')"/>
</s:VGroup>
</s:VGroup>
</s:Application>
Tue Jun 12 2018, 02:44 PM Z