如何将Glow Filter应用到AS3中动画片段中的所有显示对象上？

Question

我有一个movieclip，其中我已应用FlashEff2组件来创建文本字段的效果。

但FlashEff2组件会丢弃所有Flash IDE过滤器（GlowFilter）。所以我现在想的是当FlashEff2组件结束其动画内容时添加一个GlowFilter。

但问题是FlashEff2将所有文本拆分成单个字母，导致大量实例。

那么，我怎样才能将这个Glow Filter放到舞台上movieclip txt_mc内的所有实例中？

谢谢！

Answer 1

package
{
    import flash.display.DisplayObject;
    import flash.display.DisplayObjectContainer;
    import flash.display.MovieClip;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.filters.BitmapFilter;
    import flash.filters.GlowFilter;
    import flash.text.TextField;

    [SWF(width="500", height="100")]
    public class TestEffects extends Sprite
    {
        private var _letters : Vector.<TextField> = new Vector.<TextField>;

        public function TestEffects()
        {
            super();

            // Add some text
            var txt_mc : MovieClip = new MovieClip;
            for(var i : uint = 0; i < 100; ++i)
            {
                var l : TextField = new TextField;
                l.text = String.fromCharCode( Math.random() * 500 );
                l.x = i * 10;
                l.y = Math.random() * stage.stageHeight;
                txt_mc.addChild( l );
                _letters.push(l)
            }

            addChild(txt_mc);

            // Apply a filter on every children
            var effect : GlowFilter = new GlowFilter;
            applyFilterChildren(txt_mc, effect);

            // Just for fun
            addEventListener(Event.ENTER_FRAME, updatePosition);
        }


        public function applyFilterChildren(t : DisplayObjectContainer, effect : BitmapFilter) : void
        {
            if(!t)
                return;

            for(var index : uint = 0; index < t.numChildren; ++index)
            {
                var child : DisplayObject = t.getChildAt( index );
                child.filters = [ effect ];
            }
        }

        // Update y position
        protected function updatePosition(event:Event):void
        {
            for each(var l : TextField in _letters)
                l.y = (l.y + 1) % 80;
        }
    }
}

Answer 2

为什么不直接将GlowFilter添加到容器中？

var glowFilter:GlowFilter = new GlowFilter();
txt_mc.filters = [glowFilter];