Define a BlurFilter and the animation on that filter.
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<!-- styles/AnimateFilterExample.mxml -->
<s:Application backgroundColor="0xFFFFFF"
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="initApp();">
<fx:Script>
import spark.effects.*;
import spark.filters.BlurFilter;
import spark.effects.animation.*;
private var blurFilter:BlurFilter;
private var blurAnim:AnimateFilter;
private var smpX:SimpleMotionPath;
private var smpY:SimpleMotionPath;
private function initApp():void {
blurFilter = new BlurFilter();
blurAnim = new AnimateFilter(btn1, blurFilter);
smpX = new SimpleMotionPath("blurX",0,20);
smpY = new SimpleMotionPath("blurY",0,20);
blurAnim.motionPaths = Vector.<MotionPath>([smpX,smpY]);
}
private function doBlurSample():void {
blurAnim.repeatCount = 0;
blurAnim.repeatBehavior = RepeatBehavior.REVERSE;
blurAnim.play();
}
private function stopAnimation():void {
blurAnim.stop();
}
</fx:Script>
<s:Button id="btn1" label="Blur" mouseOver="doBlurSample();"
mouseOut="stopAnimation();" />
</s:Application>
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