[ActionScript 3.0] 运用Color类interpolateColor静态方法绘制渐变色

以下类可直接作为文档类测试，效果如图：

package 
{
    import fl.motion.Color;
    import flash.display.GradientType;
    import flash.display.Shape;
    import flash.display.Sprite;
    import flash.events.MouseEvent;
    import flash.geom.Matrix;

    /**
      * ...
      * @author FrostYen
      */
    [SWF(width=700,height=800,backgroundColor=0x000000)]
    public class GradientColor extends Sprite
    {
        public function GradientColor():void
        {
            setGradient(0xDFB920, 0x0000FF,70);
        }

        /**
           * 绘制从一种颜色过渡到另一种颜色的色块
           * @param fromColor 开始颜色值
           * @param toColor 最终颜色值
           * @param total 色块数量
           */
        public function setGradient(fromColor:uint,toColor:uint,total:int):void
        {
            for (var i:int=0; i<total; i++)
            {
                var pro:Number=Math.ceil(1/(total-1)*i*100)/100;
                var newcolor:uint = Color.interpolateColor(fromColor,toColor,pro);
                var rect:Sprite=new Sprite();
                rect.graphics.beginFill(newcolor);
                rect.graphics.drawRect(0,0,30,30);
                rect.graphics.endFill();
                rect.x = 100 + 50 * (i % 10);
                rect.y=100+50*Math.floor(i/10);
                addChild(rect);
                rect.name = newcolor.toString(16);
                rect.addEventListener(MouseEvent.CLICK,onClick);
            }

            var shape:Shape = new Shape();
            var cols:Array = [fromColor,toColor];
            var alphas:Array = [1,1];
            var rats:Array = [0,255];
            var matr:Matrix = new Matrix();
            matr.createGradientBox(480, 100, 0, 0, 0);
            shape.graphics.clear();
            shape.graphics.beginGradientFill(GradientType.LINEAR,cols,alphas,rats,matr);
            //渐变填充颜色;
            shape.graphics.drawRect(0,0,480,100);
            shape.graphics.endFill();
            shape.x = 100;
            shape.y = this.stage.stageHeight - 150;
            this.addChild(shape);
        }

        private function onClick(e:MouseEvent):void
        {
            trace(e.currentTarget.name);//得出点击对象的颜色值
        }
    }

}