[LayaAirIDE 2.0]绘画圆角矩形的工具，直接用，不用自己去算

package utils 

{

	import laya.display.cmd.DrawPathCmd;

	import laya.display.Graphics;

	import laya.display.Sprite;

	/**

	 * ...

	 * @author Kun

	 */

	public class GraphicsUtil 

	{

		

		

		/**

		 * 绘画圆角矩形

		 * @param	graghics 	Graghics对象

		 * @param	x			开始绘制的x轴位置

		 * @param	y			开始绘制的y轴位置

		 * @param	width		矩形宽

		 * @param	height		矩形高

		 * @param	roundRadius	圆角半径

		 * @param	fillColor	填充颜色

		 * @param	borderColor	边框填充颜色

		 * @param	borderWidth 边框大小

		 * @return DrawPathCmd 对象

		 */

		public static function drawRoundRect(graghics:Graphics, x:Number, y:Number, width:Number, height:Number, roundRadius:Number, fillColor:String, borderColor:String = null, borderWidth:Number = 0):DrawPathCmd {

			var paths:Array = [];

			paths.push(["moveTo", roundRadius, 0]);

			paths.push(["lineTo", width - roundRadius, 0]);

			paths.push(["arcTo", width, 0, width, roundRadius, roundRadius]);

			paths.push(["lineTo", width, height - roundRadius]);

			paths.push(["arcTo", width, height, width - roundRadius, height, roundRadius]);

			paths.push(["lineTo", roundRadius, height]);

			paths.push(["arcTo", 0, height, 0, height - roundRadius, roundRadius]);

			paths.push(["lineTo", 0, roundRadius]);

			paths.push(["arcTo", 0, 0, roundRadius, 0, roundRadius]);

			paths.push(["closePath"]);

			var brush:Object = { fillStyle:fillColor };

			var pen:Object = { strokeStyle:borderColor, lineWidth:borderWidth };

			return graghics.drawPath(x, y, paths, brush, pen);

		}

		

	}



}