vertex_array.h

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/*!****************************************************************//*!*
 * \file   mesh.h
 * \brief  Mesh interfaces definition module.
 *         Mesh stores vertex and index buffer and implement their binding during render.
 * 
 * \author Sabitov Kirill
 * \date   27 June 2022
 *********************************************************************/
 
#pragma once
 
#include "buffer.h"
 
namespace scl
{
    enum class mesh_type
    {
        LINES,        
        POINTS,       
        PATCHES,      
        TRIANGLES,    
        TRISTRIP,     
    };
 
    class vertex_array : public render_primitive
    {
    protected: 
        mesh_type Type {};
        shared<vertex_buffer> VertexBuffer {};
        shared<index_buffer> IndexBuffer {};
 
    public: 
        mesh_type GetType() const { return Type; }
        const shared<vertex_buffer> &GetVertexBuffer() const { return VertexBuffer; }
        const shared<index_buffer> &GetIndexBuffer() const { return IndexBuffer; }
 
        virtual void SetVertexBuffer(const shared<vertex_buffer> &VertexBuffer) = 0;
        virtual void SetIndexBuffer(const shared<index_buffer> &IndexBuffer) = 0;
 
    public:
        vertex_array(mesh_type MeshType);
 
        virtual ~vertex_array() = default;
 
        /*!*
         * Bind vertex array to current render stage function.
         *
         * \param None.
         * \return None.
         */
        virtual void Bind() const = 0;
 
        /*!*
         * Unbind vertex array from current render stage function.
         *
         * \param None.
         * \return None.
         */
        virtual void Unbind() const = 0;
 
        /*!*
         * Create vertex array function.
         * 
         * \param Type - creating mesh type.
         * \param VertexBuffer - vertex buffer to link to vertex array.
         * \param IndexBuffer - vartex indicies buffer to be linked to vertex array.
         * \return pointer to created vertex array.
         */
        static shared<vertex_array> Create(mesh_type Mesh_type);
    };
}