CCNodeGird解析

/**
 * @brief Base class for Grid Node.
 */
//网格节点的基类
class CC_DLL NodeGrid : public Node
{
public:
    /** Create a Grid Node.
     *
     * @return An autorelease Grid Node.
     */
	 // 创建一个网格节点
    static NodeGrid* create();
    
    /** Get a Grid Node. 
     *
     * @return Return a GridBase.
     */
	 // 得到网格
    GridBase* getGrid() { return _nodeGrid; }
    /**
     * @js NA
     */
    const GridBase* getGrid() const { return _nodeGrid; }

    /**
     * Changes a grid object that is used when applying effects.
     *
     * @param grid  A Grid object that is used when applying effects.
     */
	 // 设置网格
    void setGrid(GridBase *grid);
    
    /** Set the Grid Target. 
     *
     * @param target A Node is used to set the Grid Target.
     */
	 //设置目标
    void setTarget(Node *target);

    // overrides
    virtual void visit(Renderer *renderer, const Mat4 &parentTransform, uint32_t parentFlags) override;

CC_CONSTRUCTOR_ACCESS:
    NodeGrid();
    virtual ~NodeGrid();

protected:
    void onGridBeginDraw();
    void onGridEndDraw();

    Node* _gridTarget;
    GridBase* _nodeGrid;
    GroupCommand _groupCommand;
    CustomCommand _gridBeginCommand;
    CustomCommand _gridEndCommand;

private:
    CC_DISALLOW_COPY_AND_ASSIGN(NodeGrid);
};
/** @} */