[转] AS 文本位图描边

文本位图描边

来源：James Li 的《使用位图滤镜为动态文本描边》
import flash.display.Bitmap;
import flash.text.TextField;
import flash.filters.*;
import flash.geom.Point;

var field:TextField = getChildByName(“tf”) as TextField;
var bitmap:Bitmap = new Bitmap();
var bitmapData:BitmapData = new BitmapData(field.width+10,
field.height+10, true,0x00);
bitmapData.draw(field,new Matrix(1,0,0,1,5,0));
var matrix:Array = [0,1,0,
1,1,1,
0,1,0
];
// 发光滤镜
bitmapData.applyFilter(bitmapData, bitmapData.rect,new Point(),
new GlowFilter(0x000000,1.0,2.0,2.0,10,2));
// 卷积滤镜，减轻锯齿
bitmapData.applyFilter(bitmapData, bitmapData.rect, new Point(),
new ConvolutionFilter(3,3,matrix,3));

bitmap.bitmapData = bitmapData;

bitmap.x = field.x + field.width + 10;
bitmap.y = field.y;

addChild(bitmap);