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			</script><div class="MainContent"><table class="classHeaderTable" cellpadding="0" cellspacing="0"><tr><td class="classHeaderTableLabel">Package</td><td><a href="package-detail.html" onclick="javascript:loadClassListFrame('class-list.html')">flash.filters</a></td></tr><tr><td class="classHeaderTableLabel">Class</td><td class="classSignature">public  class  ConvolutionFilter</td></tr><tr><td class="classHeaderTableLabel">Inheritance</td><td class="inheritanceList">ConvolutionFilter  <img src="../../images/inherit-arrow.gif" title="Inheritance" alt="Inheritance" class="inheritArrow"> <a href="../../flash/filters/BitmapFilter.html">BitmapFilter</a> <img src="../../images/inherit-arrow.gif" title="Inheritance" alt="Inheritance" class="inheritArrow"> <a href="../../Object.html">Object</a></td></tr></table><p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p></p>
        The ConvolutionFilter class applies a matrix convolution filter effect. A convolution combines pixels
in the input image with neighboring pixels to produce an image. A wide variety of image
effects can be achieved through convolutions, including blurring, edge detection, sharpening,
embossing, and beveling. 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.
        <p>
          To create a convolution filter, use the syntax
          <code>new ConvolutionFilter()</code>
          .
The use of filters depends on the object to which you apply the filter:
        </p>
        
               <ul>
                  <li>
            To apply filters to movie clips, text fields, buttons, and video, use the
            <code>filters</code>
            property (inherited from DisplayObject). Setting the
            <code>filters</code>
            property of an object does not modify the object, and you can remove the filter by clearing the
            <code>filters</code>
            property.
          </li>
                  <li>
            To apply filters to BitmapData objects, use the
            <code>BitmapData.applyFilter()</code>
            method.
Calling
            <code>applyFilter()</code>
            on a BitmapData object takes the source BitmapData object 
and the filter object and generates a filtered image as a result.
          </li>
               </ul>
        
               <p>
          If you apply a filter to a display object, the value of the
          <code>cacheAsBitmap</code>
          property of the 
object is set to
          <code>true</code>
          . If you clear all filters, the original value of
          <code>cacheAsBitmap</code>
          is restored.
        </p>
        
               <p>A filter is not applied if the resulting image exceeds the maximum dimensions.
In  AIR 1.5 and Flash Player 10, the maximum is 8,192 pixels in width or height, 
and the total number of pixels cannot exceed 16,777,216 pixels. (So, if an image is 8,192 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.
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.</p>
        
            <p></p><p><a href="#includeExamplesSummary">View the examples</a></p><p><span class="classHeaderTableLabel">See also</span></p><div class="seeAlso"><a href="../../flash/display/BitmapData.html#applyFilter()" target="">flash.display.BitmapData.applyFilter()</a><br/><a href="../../flash/display/DisplayObject.html#filters" target="">flash.display.DisplayObject.filters</a><br/><a href="../../flash/display/DisplayObject.html#cacheAsBitmap" target="">flash.display.DisplayObject.cacheAsBitmap</a><br/><a href="ConvolutionFilter.html#matrix" target="">matrix</a></div><br/><hr></div><a name="propertySummary"></a><div class="summarySection"><div class="summaryTableTitle">Public Properties</div><div class="showHideLinks"><div id="hideInheritedProperty" class="hideInheritedProperty"><a class="showHideLink" href="#propertySummary" onclick="javascript:setInheritedVisible(false,'Property');"><img class="showHideLinkImage" src="../../images/expanded.gif"> Hide Inherited Public Properties</a></div><div id="showInheritedProperty" class="showInheritedProperty"><a class="showHideLink" href="#propertySummary" onclick="javascript:setInheritedVisible(true,'Property');"><img class="showHideLinkImage" src="../../images/collapsed.gif"> Show Inherited Public Properties</a></div></div><table cellspacing="0" cellpadding="3" class="summaryTable " id="summaryTableProperty"><tr><th>&nbsp;</th><th colspan="2">Property</th><th>Defined By</th></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a href="#alpha" class="signatureLink">alpha</a> : <a href="../../Number.html">Number</a><div class="summaryTableDescription">The alpha transparency value of the substitute color.</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a href="#bias" class="signatureLink">bias</a> : <a href="../../Number.html">Number</a><div class="summaryTableDescription">The amount of bias to add to the result of the matrix transformation.</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a href="#clamp" class="signatureLink">clamp</a> : <a href="../../Boolean.html">Boolean</a><div class="summaryTableDescription">Indicates whether the image should be clamped.</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a href="#color" class="signatureLink">color</a> : <a href="../../uint.html">uint</a><div class="summaryTableDescription">The hexadecimal color to substitute for pixels that are off the source image.</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class="hideInheritedProperty"><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><a href="../../Object.html#constructor" class="signatureLink">constructor</a> : <a href="../../Object.html">Object</a><div class="summaryTableDescription">A reference to the class object or constructor function for a given object instance.</div></td><td class="summaryTableOwnerCol"><a href="../../Object.html">Object</a></td></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a href="#divisor" class="signatureLink">divisor</a> : <a href="../../Number.html">Number</a><div class="summaryTableDescription">The divisor used during matrix transformation.</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a href="#matrix" class="signatureLink">matrix</a> : <a href="../../Array.html">Array</a><div class="summaryTableDescription">An array of values used for matrix transformation.</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a href="#matrixX" class="signatureLink">matrixX</a> : <a href="../../Number.html">Number</a><div class="summaryTableDescription">The x dimension of the matrix (the number of columns in the matrix).</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a href="#matrixY" class="signatureLink">matrixY</a> : <a href="../../Number.html">Number</a><div class="summaryTableDescription">The y dimension of the matrix (the number of rows in the matrix).</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><a href="#preserveAlpha" class="signatureLink">preserveAlpha</a> : <a href="../../Boolean.html">Boolean</a><div class="summaryTableDescription">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.</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class="hideInheritedProperty"><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><a href="../../Object.html#prototype" class="signatureLink">prototype</a> : <a href="../../Object.html">Object</a><div class="summaryTableDescription">[static] A reference to the prototype object of a class or function object.</div></td><td class="summaryTableOwnerCol"><a href="../../Object.html">Object</a></td></tr></table></div><a name="methodSummary"></a><div class="summarySection"><div class="summaryTableTitle">Public Methods </div><div class="showHideLinks"><div id="hideInheritedMethod" class="hideInheritedMethod"><a class="showHideLink" href="#methodSummary" onclick="javascript:setInheritedVisible(false,'Method');"><img class="showHideLinkImage" src="../../images/expanded.gif"> Hide Inherited Public Methods</a></div><div id="showInheritedMethod" class="showInheritedMethod"><a class="showHideLink" href="#methodSummary" onclick="javascript:setInheritedVisible(true,'Method');"><img class="showHideLinkImage" src="../../images/collapsed.gif"> Show Inherited Public Methods</a></div></div><table cellspacing="0" cellpadding="3" class="summaryTable " id="summaryTableMethod"><tr><th>&nbsp;</th><th colspan="2">Method</th><th>Defined By</th></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="#ConvolutionFilter()" class="signatureLink">ConvolutionFilter</a>(matrixX:<a href="../../Number.html">Number</a> = 0, matrixY:<a href="../../Number.html">Number</a> = 0, matrix:<a href="../../Array.html">Array</a> = null, divisor:<a href="../../Number.html">Number</a> = 1.0, bias:<a href="../../Number.html">Number</a> = 0.0, preserveAlpha:<a href="../../Boolean.html">Boolean</a> = true, clamp:<a href="../../Boolean.html">Boolean</a> = true, color:<a href="../../uint.html">uint</a> = 0, alpha:<a href="../../Number.html">Number</a> = 0.0)</div><div class="summaryTableDescription">Initializes a ConvolutionFilter instance with the specified parameters.</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class=""><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol">&nbsp;</td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="#clone()" class="signatureLink">clone</a>():<a href="../../flash/filters/BitmapFilter.html">BitmapFilter</a></div><div class="summaryTableDescription">Returns a copy of this filter object.</div></td><td class="summaryTableOwnerCol">ConvolutionFilter</td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../Object.html#hasOwnProperty()" class="signatureLink">hasOwnProperty</a>(name:<a href="../../String.html">String</a>):<a href="../../Boolean.html">Boolean</a></div><div class="summaryTableDescription">Indicates whether an object has a specified property defined.</div></td><td class="summaryTableOwnerCol"><a href="../../Object.html">Object</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../Object.html#isPrototypeOf()" class="signatureLink">isPrototypeOf</a>(theClass:<a href="../../Object.html">Object</a>):<a href="../../Boolean.html">Boolean</a></div><div class="summaryTableDescription">Indicates whether an instance of the Object class is in the prototype chain of the object specified 
  as the parameter.</div></td><td class="summaryTableOwnerCol"><a href="../../Object.html">Object</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../Object.html#propertyIsEnumerable()" class="signatureLink">propertyIsEnumerable</a>(name:<a href="../../String.html">String</a>):<a href="../../Boolean.html">Boolean</a></div><div class="summaryTableDescription">Indicates whether the specified property exists and is enumerable.</div></td><td class="summaryTableOwnerCol"><a href="../../Object.html">Object</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../Object.html#setPropertyIsEnumerable()" class="signatureLink">setPropertyIsEnumerable</a>(name:<a href="../../String.html">String</a>, isEnum:<a href="../../Boolean.html">Boolean</a> = true):<a href="../../specialTypes.html#void">void</a></div><div class="summaryTableDescription">Sets the availability of a dynamic property for loop operations.</div></td><td class="summaryTableOwnerCol"><a href="../../Object.html">Object</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../Object.html#toString()" class="signatureLink">toString</a>():<a href="../../String.html">String</a></div><div class="summaryTableDescription">Returns the string representation of the specified object.</div></td><td class="summaryTableOwnerCol"><a href="../../Object.html">Object</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol">&nbsp;</td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../Object.html#valueOf()" class="signatureLink">valueOf</a>():<a href="../../Object.html">Object</a></div><div class="summaryTableDescription">Returns the primitive value of the specified object.</div></td><td class="summaryTableOwnerCol"><a href="../../Object.html">Object</a></td></tr></table></div><script language="javascript" type="text/javascript"><!--
                      showHideInherited();
                      --></script><div class="MainContent"><div class="detailSectionHeader">Property Detail</div><a name="propertyDetail"></a><a name="alpha"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">alpha</td><td class="detailHeaderType">property</td></tr></table><div class="detailBody"><code>alpha:<a href="../../Number.html">Number</a></code>&nbsp;&nbsp;[read-write] <p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p>The alpha transparency value of the substitute color. Valid values are 0 to 1.0. The default is 0. For example,
 .25 sets a transparency value of 25%.</p><br/><br/><span class="label"> Implementation </span><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function get alpha():<a href="../../Number.html">Number</a></code><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function set alpha(value:<a href="../../Number.html">Number</a>):<a href="../../specialTypes.html#void">void</a></code><br/></div><a name="propertyDetail"></a><a name="bias"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">bias</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td></tr></table><div class="detailBody"><code>bias:<a href="../../Number.html">Number</a></code>&nbsp;&nbsp;[read-write] <p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p>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. The default value is 0.</p><br/><br/><span class="label"> Implementation </span><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function get bias():<a href="../../Number.html">Number</a></code><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function set bias(value:<a href="../../Number.html">Number</a>):<a href="../../specialTypes.html#void">void</a></code><br/></div><a name="propertyDetail"></a><a name="clamp"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">clamp</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td></tr></table><div class="detailBody"><code>clamp:<a href="../../Boolean.html">Boolean</a></code>&nbsp;&nbsp;[read-write] <p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p>
          Indicates whether the image should be clamped. For pixels off the source image, a value of
          <code>true</code>
          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
          <code>false</code>
          indicates that another color should 
 be used, as specified in the
          <code>color</code>
          and
          <code>alpha</code>
          properties.
 The default is
          <code>true</code>
          .
        </p><br/><br/><span class="label"> Implementation </span><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function get clamp():<a href="../../Boolean.html">Boolean</a></code><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function set clamp(value:<a href="../../Boolean.html">Boolean</a>):<a href="../../specialTypes.html#void">void</a></code><br/><br/><span class="label"> Example </span><br/><div class="detailBody">
          The following example creates two boxes using the
          <code>BitmapData</code>
          class, one of which is half the size of the other.
 When the example first loads, the larger box is drawn inside
          <code>mc</code>
          using the
          <code>attachBitmap()</code>
          .
 When
          <code>mc</code>
          is clicked and the
          <code>applyFilter()</code>
          method is called, the
          <code>largeBox</code>
          instance of
          <code>BitmapData</code>
          is redrawn with
          <code>smallBox</code>
          as a source bitmap.
 Since
          <code>applyFilter()</code>
          draws
          <code>smallBox</code>
          over a
          <code>Rectangle</code>
          whose width and height is specified as those of
          <code>largeBox</code>
          , the source bitmap is smaller than the drawing area.
 The
          <code>clamp</code>
          property of
          <code>ConvolutionFilter</code>
          in this case is set to
          <code>false</code>
          and the area which is not covered by the source bitmap,
          <code>smallBox</code>
          , is a solid red as determined by the
          <code>clampColor</code>
          and
          <code>clampAlpha</code>
          variables.
          <div class="listing"><pre>package {
    import flash.display.Sprite;
    import flash.display.BitmapData;
    import flash.filters.ConvolutionFilter;
    import flash.text.TextField;
    import flash.geom.Rectangle;
    import flash.geom.Point;

    public class ConvolutionClampExample extends Sprite {
        // Variables that affect clamping:
        var clamp:Boolean = false;
        var clampColor:Number = 0xFF0000;
        var clampAlpha:Number = 1;
        
        // For illustration, keep other ConvolutionFilter variables neutral:
        var bias:Number = 0;
        var preserveAlpha:Boolean = false;
        // Also, construct a neutral matrix
        var matrixCols:Number = 3;
        var matrixRows:Number = 3;
        var matrix:Array = [ 1,1,1,
                             1,1,1,
                             1,1,1 ];
        
        var filter:ConvolutionFilter = new ConvolutionFilter(matrixCols, matrixRows, matrix, matrix.length, bias, preserveAlpha, clamp, clampColor, clampAlpha);
        
        var largeBoxWidth:Number = 100;
        var largeBoxHeight:Number = 100;
        var largeBox:BitmapData = new BitmapData(largeBoxWidth, largeBoxWidth, true, 0xCC00FF00);
        var smallBoxWidth:Number = largeBoxWidth / 2;
        var smallBoxHeight:Number = largeBoxHeight / 2;
        var smallBox:BitmapData = new BitmapData(smallBoxWidth, smallBoxWidth, true, 0xCC0000FF);
            
        var mc:MovieClip = this.createEmptyMovieClip("mc", this.getNextHighestDepth());
        mc.attachBitmap(largeBox, this.getNextHighestDepth());
        
        mc.onPress = function() {
            largeBox.applyFilter(smallBox,
                                 new Rectangle(0,0, largeBoxWidth, largeBoxHeight),
                                 new Point(0,0),
                                 filter);
        }
    }
}</pre></div>
        </div></div><a name="propertyDetail"></a><a name="color"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">color</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td></tr></table><div class="detailBody"><code>color:<a href="../../uint.html">uint</a></code>&nbsp;&nbsp;[read-write] <p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p>The hexadecimal color to substitute for pixels that are off the source image.
 It is an RGB value with no alpha component. The default is 0.</p><br/><br/><span class="label"> Implementation </span><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function get color():<a href="../../uint.html">uint</a></code><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function set color(value:<a href="../../uint.html">uint</a>):<a href="../../specialTypes.html#void">void</a></code><br/></div><a name="propertyDetail"></a><a name="divisor"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">divisor</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td></tr></table><div class="detailBody"><code>divisor:<a href="../../Number.html">Number</a></code>&nbsp;&nbsp;[read-write] <p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p>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.</p><br/><br/><span class="label"> Implementation </span><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function get divisor():<a href="../../Number.html">Number</a></code><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function set divisor(value:<a href="../../Number.html">Number</a>):<a href="../../specialTypes.html#void">void</a></code><br/></div><a name="propertyDetail"></a><a name="matrix"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">matrix</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td></tr></table><div class="detailBody"><code>matrix:<a href="../../Array.html">Array</a></code>&nbsp;&nbsp;[read-write] <p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p>
          An array of values used for matrix transformation. The number of items
 in the array must equal
          <code>matrixX * matrixY</code>
          .
          <p>
            A matrix convolution is based on an
            <i>n</i>
            x
            <i>m</i>
            matrix, which describes how a given pixel value in the
 input image is combined with its neighboring pixel values to produce a resulting pixel value. Each
 result pixel is determined by applying the matrix to the corresponding source pixel and its 
 neighboring pixels.
          </p>
          
          <p>
            For a 3 x 3 matrix convolution, the following formula is used for each independent color channel:
            <pre>
              <code>dst (x, y) = ((src (x-1, y-1) * a0 + src(x, y-1) * a1....
                   src(x, y+1) * a7 + src (x+1,y+1) * a8) / divisor) + bias</code>
            </pre>
            
          </p>
          
          <p>Certain filter specifications perform faster when run by a processor 
 that offers SSE (Streaming SIMD Extensions). The following are criteria
 for faster convolution operations:</p>
          
          <ul><li>The filter must be a 3x3 filter.</li><li>All the filter terms must be integers between -127 and +127.</li><li>The sum of all the filter terms must not have an absolute value greater than 127.</li><li>If any filter term is negative, the divisor must be between 2.00001 and 256.</li><li>If all filter terms are positive, the divisor must be between 1.1 and 256.</li><li>The bias must be an integer.</li></ul>
          
          <p>
            <b>Note:</b>
            If you create a ConvolutionFilter instance using the
    constructor without parameters, the order you assign values to matrix properties affects
    the behavior of the filter. In the following case, the matrix array is assigned while the
            <code>matrixX</code>
            and
            <code>matrixY</code>
            properties are still set to
            <code>0</code>
            (the default value):
          </p>
          
          <div class="listing"><pre>public var myfilter:ConvolutionFilter = new ConvolutionFilter();
    myfilter.matrix = [0, 0, 0, 0, 1, 0, 0, 0, 0];
    myfilter.matrixX = 3;
    myfilter.matrixY = 3;</pre></div>
          
          <p>
            In the following case, the matrix array is assigned while the
            <code>matrixX</code>
            and
            <code>matrixY</code>
            properties are set to
            <code>3</code>
            :
          </p>
          
          <div class="listing"><pre>public var myfilter:ConvolutionFilter = new ConvolutionFilter();
    myfilter.matrixX = 3;
    myfilter.matrixY = 3;
    myfilter.matrix = [0, 0, 0, 0, 1, 0, 0, 0, 0];</pre></div>
          
        </p><br/><br/><span class="label"> Implementation </span><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function get matrix():<a href="../../Array.html">Array</a></code><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function set matrix(value:<a href="../../Array.html">Array</a>):<a href="../../specialTypes.html#void">void</a></code><br/><br/><span class="label"> Throws </span><br/><table cellpadding="0" cellspacing="0" border="0"><tr><td width="20"></td><td><code><a href="../../TypeError.html">TypeError</a> </code> &mdash; The Array is null when being set</td></tr></table></div><a name="propertyDetail"></a><a name="matrixX"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">matrixX</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td></tr></table><div class="detailBody"><code>matrixX:<a href="../../Number.html">Number</a></code>&nbsp;&nbsp;[read-write] <p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p>
          The
          <i>x</i>
          dimension of the matrix (the number of columns in the matrix). The default
 value is 0.
        </p><br/><br/><span class="label"> Implementation </span><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function get matrixX():<a href="../../Number.html">Number</a></code><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function set matrixX(value:<a href="../../Number.html">Number</a>):<a href="../../specialTypes.html#void">void</a></code><br/></div><a name="propertyDetail"></a><a name="matrixY"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">matrixY</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td></tr></table><div class="detailBody"><code>matrixY:<a href="../../Number.html">Number</a></code>&nbsp;&nbsp;[read-write] <p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p>
          The
          <i>y</i>
          dimension of the matrix (the number of rows in the matrix). The default value 
 is 0.
        </p><br/><br/><span class="label"> Implementation </span><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function get matrixY():<a href="../../Number.html">Number</a></code><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function set matrixY(value:<a href="../../Number.html">Number</a>):<a href="../../specialTypes.html#void">void</a></code><br/></div><a name="propertyDetail"></a><a name="preserveAlpha"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">preserveAlpha</td><td class="detailHeaderType">property</td><td class="detailHeaderRule">&nbsp;</td></tr></table><div class="detailBody"><code>preserveAlpha:<a href="../../Boolean.html">Boolean</a></code>&nbsp;&nbsp;[read-write] <p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p>
          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
          <code>false</code>
          indicates that the 
 convolution applies to all channels, including the
 alpha channel. A value of
          <code>true</code>
          indicates that the convolution applies only to the 
 color channels. The default value is
          <code>true</code>
          .
        </p><br/><br/><span class="label"> Implementation </span><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function get preserveAlpha():<a href="../../Boolean.html">Boolean</a></code><br/><code>&nbsp;&nbsp;&nbsp;&nbsp;public function set preserveAlpha(value:<a href="../../Boolean.html">Boolean</a>):<a href="../../specialTypes.html#void">void</a></code><br/></div><a name="constructorDetail"></a><div class="detailSectionHeader">Constructor Detail</div><a name="ConvolutionFilter()"></a><a name="ConvolutionFilter(Number,Number,Array,Number,Number,Boolean,Boolean,uint,Number)"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">ConvolutionFilter</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">Constructor</td></tr></table><div class="detailBody"><code>public function ConvolutionFilter(matrixX:<a href="../../Number.html">Number</a> = 0, matrixY:<a href="../../Number.html">Number</a> = 0, matrix:<a href="../../Array.html">Array</a> = null, divisor:<a href="../../Number.html">Number</a> = 1.0, bias:<a href="../../Number.html">Number</a> = 0.0, preserveAlpha:<a href="../../Boolean.html">Boolean</a> = true, clamp:<a href="../../Boolean.html">Boolean</a> = true, color:<a href="../../uint.html">uint</a> = 0, alpha:<a href="../../Number.html">Number</a> = 0.0)</code><p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p>Initializes a ConvolutionFilter instance with the specified parameters.</p><span class="label"> Parameters </span><table cellpadding="0" cellspacing="0" border="0"><tr><td width="20px"></td><td><code><span class="label">matrixX</span>:<a href="../../Number.html">Number</a></code> (default = <code>0</code>)<code></code> &mdash; 
              The
              <i>x</i>
              dimension of the matrix (the number of columns in the matrix). The 
 default value is 0.
            </td></tr><tr><td class="paramSpacer">&nbsp;</td></tr><tr><td width="20px"></td><td><code><span class="label">matrixY</span>:<a href="../../Number.html">Number</a></code> (default = <code>0</code>)<code></code> &mdash; 
              The
              <i>y</i>
              dimension of the matrix (the number of rows in the matrix). The 
 default value is 0.
            </td></tr><tr><td class="paramSpacer">&nbsp;</td></tr><tr><td width="20px"></td><td><code><span class="label">matrix</span>:<a href="../../Array.html">Array</a></code> (default = <code>null</code>)<code></code> &mdash; 
              The array of values used for matrix transformation. The number of 
 items in the array must equal
              <code>matrixX * matrixY</code>
              .
            </td></tr><tr><td class="paramSpacer">&nbsp;</td></tr><tr><td width="20px"></td><td><code><span class="label">divisor</span>:<a href="../../Number.html">Number</a></code> (default = <code>1.0</code>)<code></code> &mdash; The divisor used during matrix transformation. The default value is 1. 
 A divisor that is the sum of all the matrix values evens out the overall color intensity of the
 result. A value of 0 is ignored and the default is used instead.</td></tr><tr><td class="paramSpacer">&nbsp;</td></tr><tr><td width="20px"></td><td><code><span class="label">bias</span>:<a href="../../Number.html">Number</a></code> (default = <code>0.0</code>)<code></code> &mdash; The bias to add to the result of the matrix transformation. The default value is 0.</td></tr><tr><td class="paramSpacer">&nbsp;</td></tr><tr><td width="20px"></td><td><code><span class="label">preserveAlpha</span>:<a href="../../Boolean.html">Boolean</a></code> (default = <code>true</code>)<code></code> &mdash; 
              A value of
              <code>false</code>
              indicates that the alpha value is not
 preserved and that the convolution applies to all
 channels, including the alpha channel. A value of
              <code>true</code>
              indicates that 
 the convolution applies only to the color channels. The default value is
              <code>true</code>
              .
            </td></tr><tr><td class="paramSpacer">&nbsp;</td></tr><tr><td width="20px"></td><td><code><span class="label">clamp</span>:<a href="../../Boolean.html">Boolean</a></code> (default = <code>true</code>)<code></code> &mdash; 
              For pixels that are off the source image, a value of
              <code>true</code>
              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
              <code>false</code>
              indicates that another 
 color should be used, as specified in the
              <code>color</code>
              and
              <code>alpha</code>
              properties. 
 The default is
              <code>true</code>
              .
            </td></tr><tr><td class="paramSpacer">&nbsp;</td></tr><tr><td width="20px"></td><td><code><span class="label">color</span>:<a href="../../uint.html">uint</a></code> (default = <code>0</code>)<code></code> &mdash; The hexadecimal color to substitute for pixels that are off the source image.</td></tr><tr><td class="paramSpacer">&nbsp;</td></tr><tr><td width="20px"></td><td><code><span class="label">alpha</span>:<a href="../../Number.html">Number</a></code> (default = <code>0.0</code>)<code></code> &mdash; The alpha of the substitute color.</td></tr></table></div><a name="methodDetail"></a><div class="detailSectionHeader">Method Detail</div><a name="clone()"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">clone</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td></tr></table><div class="detailBody"><code>override public function clone():<a href="../../flash/filters/BitmapFilter.html">BitmapFilter</a></code><p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Language Version:&nbsp;</b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b>Runtime Versions:&nbsp;</b></td><td>AIR 1.0, Flash Player 9</td></tr></table><p></p><p></p><p>Returns a copy of this filter object.</p><p></p><span class="label">Returns</span><table cellpadding="0" cellspacing="0" border="0"><tr><td width="20"></td><td><code><a href="../../flash/filters/BitmapFilter.html">BitmapFilter</a></code> &mdash; BitmapFilter A new ConvolutionFilter instance with all the same properties as the original
 ConvolutionMatrixFilter instance.</td></tr></table></div><a name="includeExamplesSummary"></a><div class="detailSectionHeader">Examples<span class="usage"><a href="../../ExampleInstruct.html"> How to use examples </a></span></div><div class="exampleHeader">ConvolutionFilterExample.as</div><br/><div class="detailBody">
        The following example applies different convolution filters to
 an image file. The filter constructor calls
        <code>buildChild()</code>
        four times to load and display four instances of the image.
 Each call to
        <code>buildChild()</code>
        takes as an argument a function that applies
 no filter to the first instance and a different convolution filter to each 
 subsequent instance.
        <p>
          The
          <code>buildChild()</code>
          function creates a new Loader object named
          <code>loader</code>
          . For each call to
          <code>buildChild()</code>
          , 
 attach an event listener to the Loader object to listen for
          <code>complete</code>
          events,
 which are handled by the function passed to
          <code>buildChild()</code>
          .
        </p>
        
        <p>
          The
          <code>applyBrightness()</code>
          ,
          <code>applySharpness()</code>
          , and
          <code>applyOutline()</code>
          functions use different values for the
          <code>matrix</code>
          array to achieve different
 ConvolutionFilter effects.
        </p>
        
        <p>
          <b>Note</b>
          : For best results, use an image approximately 80 pixels in width.
 The name and location of the image file should match the value you pass to the
          <code>url</code>
          property. For example, the value passed to
          <code>url</code>
          in the example
 points to an image file named "Image.jpg" that is in the same directory as your SWF file.
        </p>
        
        <div class="listing"><pre>package {
    import flash.display.DisplayObject;
    import flash.display.Loader;
    import flash.display.Sprite;
    import flash.events.*;
    import flash.filters.BitmapFilter;
    import flash.filters.ConvolutionFilter;
    import flash.net.URLRequest;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;

    public class ConvolutionFilterExample extends Sprite {
        private var size:uint = 140;
        private var url:String = "Image.jpg";

        public function ConvolutionFilterExample() {
            buildChild(applyNothing);
            buildChild(applyBrightness);
            buildChild(applySharpness);
            buildChild(applyOutline);
        }

        private function buildChild(loadHandler:Function):void {
            var loader:Loader = new Loader();
            loader.x = numChildren * size;
            loader.y = size;
            loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
            if(loadHandler != null) {
                loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadHandler);
            }

            var request:URLRequest = new URLRequest(url);
            loader.load(request);
            addChild(loader);
        }

        private function applyNothing(event:Event):void {
            var child:DisplayObject = DisplayObject(event.target.loader);
            applyLabel(child, "no filter");
        }

        private function applyBrightness(event:Event):void {
            var child:DisplayObject = DisplayObject(event.target.loader);
            var matrix:Array = [5, 5, 5,
                                5, 0, 5,
                                5, 5, 5];
            applyFilter(child, matrix);
            applyLabel(child, "brightness");
        }

        private function applySharpness(event:Event):void {
            var child:DisplayObject = DisplayObject(event.target.loader);
            var matrix:Array = [0, -1, 0,
                               -1, 20, -1,
                                0, -1, 0];
            applyFilter(child, matrix);
            applyLabel(child, "sharpness");
        }

        private function applyOutline(event:Event):void {
            var child:DisplayObject = DisplayObject(event.target.loader);
            var matrix:Array = [-30, 30, 0,
                                -30, 30, 0,
                                -30, 30, 0];
            applyFilter(child, matrix);
            applyLabel(child, "outline");
        }

        private function applyFilter(child:DisplayObject, matrix:Array):void {
            var matrixX:Number = 3;
            var matrixY:Number = 3;
            var divisor:Number = 9;
            var filter:BitmapFilter = new ConvolutionFilter(matrixX, matrixY, matrix, divisor);
            var filters:Array = new Array();
            filters.push(filter);
            child.filters = filters;
        }

        private function applyLabel(child:DisplayObject, label:String):void {
            var tf:TextField = new TextField();
            tf.x = child.x;
            tf.y = child.height;
            tf.autoSize = TextFieldAutoSize.LEFT;
            tf.text = label;
            addChild(tf);
        }

        private function ioErrorHandler(event:IOErrorEvent):void {
            trace("Unable to load image: " + url);
        }
    }
}</pre></div>
      </div><br/><br/><hr><br/><p></p><center class="copyright"> &copy; 2004-2008 Adobe Systems Incorporated. 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ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter ConvolutionFilter 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