/* Copyright 2005 Nicholas Bishop
 * 
 * This file is part of SharpConstruct.
 *
 * SharpConstruct is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * SharpConstruct is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with SharpConstruct; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

namespace SharpConstruct
{
	class Mesh;

	class Buffer
	{
	public:
		Buffer( const unsigned );
		~Buffer();

		void Create();
		void Initialize( const unsigned,
				 const unsigned,
				 const unsigned );
		void Initialize( const unsigned,
				 const unsigned,
				 const unsigned,
				 const void* );
		void Bind() const;
		unsigned Count() const;
	private:
		unsigned index_;
		const unsigned type_;
		unsigned count_;
		unsigned dsize_;
	};

	class Output3D
	{
	public:
		virtual ~Output3D()
		{}

		virtual void Set( const Mesh&, const bool,
				  const bool, const bool ) = 0;
		virtual void Draw() const = 0;
	};

	class VAR : public Output3D
	{
	public:
		VAR();

		static bool IsSupported();

		virtual void Set( const Mesh&, const bool,
				  const bool, const bool );
		virtual void Draw() const;
	private:
		unsigned triangle_count_, quad_count_;
		const void* triangle_data_, * quad_data_;
	};

	class VBO : public Output3D
	{
	public:
		VBO();

		static bool IsSupported();

		virtual void Set( const Mesh&, const bool,
			  const bool, const bool );
		virtual void Draw() const;
	private:
		void set_vert_norm_color_( const Mesh&, bool, bool );
		void set_polygons_( const Mesh& );
		
		Buffer vert_norm_color_;
		Buffer triangle_, quad_;			
	};
}