/*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
**]  All rights reserved.
*
* vi:ts=4 sw=4 tw=75
*
* Distributable under the terms and conditions of the 2-clause BSD license;
* see the file COPYING for a complete text of the license.
*
**************************************************************************/

#ifndef _MOOF_MESH_HH_
#define _MOOF_MESH_HH_

/**
 * \file mesh.hh
 * Defines classes for loading and manipulating meshes.
 */

#include <iostream>

#include <boost/noncopyable.hpp>
#include <boost/shared_ptr.hpp>

#include <moof/drawable.hh>
#include <moof/image.hh>
#include <moof/math.hh>
#include <moof/resource.hh>


namespace moof {


class mesh : public boost::noncopyable, public drawable
{
public:

	explicit mesh(const std::string& path);

	void draw(scalar alpha = SCALAR(0.0)) const;


	struct material
	{
		material(const std::string& id) :
			name(id) {}


		std::string	name;

		vector4		diffuse;
		vector3		ambient;
		vector3		emissive;
		vector3		specular;
		scalar		shininess;
	};


	void set_material(int index) const;
	void set_material(const material& material) const;

	struct material_group : public drawable
	{
		material_group() {}

		void draw(scalar alpha = SCALAR(0.0)) const;


		std::vector<unsigned>	triangles;
		std::vector<vector2>	triangles_uv;
	};


	class object;
	typedef boost::shared_ptr<object> object_ptr;

	struct object
	{
		object() :
			texrep(SCALAR(1.0), SCALAR(1.0)) {}

		static object_ptr alloc()
		{
			return object_ptr(new object);
		}


		void draw(const mesh& mesh, scalar alpha = SCALAR(0.0)) const;


		std::string					name;
		std::string					data;
		std::string					url;

		image_handle				texture;
		vector2						texrep;

		std::vector<vector3>		verts;
		std::vector<material_group>	faces;

		std::vector<object_ptr>		kids;
		object_ptr					parent;
	};


private:

	void import(std::istream& stream);
	
	std::vector<material>	materials_;
	std::vector<object_ptr>	objects_;
};

typedef resource_handle<mesh> mesh_handle;


} // namespace moof

#endif // _MOOF_MESH_HH_