[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
         }
     }

 }