求一个spine获取骨骼后,对其进行旋转操作的例子

代码如下,但是不能旋转

<pre class="brush:js; toolbar: true; auto-links: false;">var HelloWorldLayer = cc.Layer.extend({
    sprite:null,
    ctor:function () {
        //////////////////////////////
        // 1. super init first
        this._super();

        var size = cc.winSize;
        var spineBoy = new sp.SkeletonAnimation('res/spineboy.json', 'res/spineboy.atlas');
        spineBoy.setPosition(cc.p(size.width / 2, size.height / 2 - 150));
        spineBoy.setAnimation(2, 'walk', true);
        this.head = spineBoy.findBone("head");
        spineBoy.setScale(1);
        this.addChild(spineBoy, 4);
        this._spineboy = spineBoy;
        
        this.scheduleUpdate();
        return true;
    },
    
    update:function(dt){
        this.head.rotation += 2;
        this._spineboy.updateWorldTransform();
        
    }
});


官方的spine例子实在太简单了,吐槽一下。

我用Cocos Skeletal Animation Editor导出
怎么没有atlas??