var HelloWorldLayer = cc.Layer.extend({

    sprite:null,

    ctor:function () {

        //////////////////////////////

        // 1. super init first

        this._super();

        //这里输入测试代码

        return true;

    }

});

var HelloWorldScene = cc.Scene.extend({

    onEnter:function () {

        this._super();

        var layer = new HelloWorldLayer();

        this.addChild(layer);

    }

});

        //创建draw对象

        var drawNode =new cc.DrawNode();

        //绘制矩形，参数：坐标，大小，填充颜色，边框大小，边框颜色

        drawNode.drawRect(cc.p(0,0),cc.p(300,300),cc.color(),5,cc.color(255,255,0,255));

        //加入Layer层

        this.addChild(drawNode);

        //创建draw对象

        var drawNode =new cc.DrawNode();

        //画点，参数：坐标，半径， 颜色

        drawNode.drawDot(cc.p(100,100),10,cc.color(255,255,255));

        //加入Layer层

        this.addChild(drawNode);

        //创建draw对象

        var drawNode =new cc.DrawNode();

        //圆形，参数：原点，半径，弧度，分段(越大越接近圆)，原点到弧度的线是否显示，线条宽度，颜色

        drawNode.drawCircle(cc.p(200, 200), 50, 0, 50, false, 2, cc.color(0, 255, 0, 255));

        //加入Layer层

        this.addChild(drawNode);

        //创建draw对象

        var drawNode =new cc.DrawNode();

       //转折点坐标组

        var vertices = [cc.p(60, 80), cc.p(60, 230), cc.p(500, 80)];

        //多边形，参数：坐标组，填充颜色，边框宽度，边框颜色

        drawNode.drawPoly(vertices, cc.color(0, 255, 255, 80), 2, cc.color(255, 0, 0, 255));

        //加入Layer层

        this.addChild(drawNode);

        //创建draw对象

        var drawNode =new cc.DrawNode();

        //线，参数：起点，终点，线条宽度，线条颜色

        drawNode.drawSegment(cc.p(0, 0), cc.p(200,300), 1, cc.color(255, 0, 255, 255));

        //加入Layer层

        this.addChild(drawNode);

        //创建draw对象

        var drawNode =new cc.DrawNode();

        var vertices = [cc.p(60, 80), cc.p(60, 300), cc.p(300, 60)];

        //曲线，参数：点数组，张力，段落，线条宽度，颜色

        drawNode.drawCardinalSpline(vertices, 0.5,4,2,cc.color(255, 255, 255, 255));

        //加入Layer层

        this.addChild(drawNode);
        

        drawNode.setPositionX(22);

        drawNode.setPositionY(22);