偏向分布

package com.funct
{
    import flash.display.Sprite;

    public class Random5 extends Sprite
    {

        public function Random5()
        {
            super();
            init();
        }

        private function init():void
        {
            for (var i:int=0; i < 300; i++)
            {
                var b:Ball=new Ball(1);

                //var x1:Number=Math.random() * stage.stageWidth;
                var x1:Number=0;
                var x2:Number=Math.random() * stage.stageHeight;

                //循环的次数越多就靠近中间
                for (var j:int=0; j < 6; j++)
                {
                    x1+=Math.random() * stage.stageWidth;
                }
                
                //b.x=(x1 + x2) / 2;
                //注意,,,除以其倍数
                b.x=x1 / 6; 
                b.y=stage.stageWidth / 2 + Math.random() * 50 - 25;

                this.addChild(b);

            }
        }

    }
}