#ifndef HGL_GRAPH_VERTEX_ARRAY_INCLUDE
#define HGL_GRAPH_VERTEX_ARRAY_INCLUDE

#include<hgl/type/List.h>
#include<hgl/graph/BufferObject.h>
#include<hgl/graph/PixelCompoment.h>
namespace hgl
{
    namespace graph
    {
        /**
         * 顶点阵列数据
         */
        class VertexArray
        {
        protected:

            GLuint vao;

            ObjectList<VertexBufferObject> vbo_list;                                                ///<顶点数据缓冲区

            ElementBufferObject *element_buffer;

            VertexBufferObject *position_buffer;
            int position_compoment;                                                                 ///<位置属性格式

        public:

            VertexArray(uint max_vertex_attrib);
            ~VertexArray();

            static int      GetMaxVertexAttrib();

            const GLuint    GetVAO      ()const{return vao;}                                        ///<取得VAO对象

        public: //通用顶点缓冲区设置

            int                 AddBuffer   (int shader_location,VertexBufferObject *);             ///<设置顶点缓冲区对象
            VertexBufferObject *GetBuffer   (int index){return vbo_list[index];}                    ///<取得顶点缓冲区对象
            bool                ClearBuffer (int index){return vbo_list.Delete(index);}             ///<清除顶点缓冲区对象
            void                ClearBuffers(){ vbo_list.Clear();}                                  ///<清除所有顶点缓冲区对象

        public: //特殊缓冲区独立设置函数

            bool                    SetElement  (ElementBufferObject *eb);                          ///<设置索引缓冲区对象
            bool                    SetPosition (int shader_location,VertexBufferObject *vb);       ///<设置位置缓冲区对象

            ElementBufferObject *   GetElement  (){return element_buffer;}                          ///<获取索引缓冲区对象
            VertexBufferObject *    GetPosition (){return position_buffer;}                         ///<获取位置缓冲区对象
        };//class VertexArray
    }//namespace graph
}//namespace hgl
#endif//HGL_GRAPH_VERTEX_ARRAY_INCLUDE