/* -----------------------------------------------------------------------------
	GSFramework
	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
----------------------------------------------------------------------------- */


#ifndef	__NGEOMETRYTEMPLATE__
#define	__NGEOMETRYTEMPLATE__


		#include "core/geometry.h"
		#include "container/nlist.h"


namespace GS {
	namespace Core {

/*!
	@short	Geometry template class.
	@author Thomas Simonnet (scorpheus)
	@author	Emmanuel Julien (ejulien@nworks.fr)
*/
class	GeometryTemplate
{
		/// Polygon template.
struct	Polygon
{
		List <Vector4>	vertex;
		List <Vector4>	normal;
		List <Color>	color;
		List <Vector2> uv[__UV_PER_GEOMETRY__];
		ushort			material;
};

		/// Polygon vertex.
struct	PolygonVertex
{
	uint		ipoly;
	uint		ivertex;
};

		Vector4			GetVertex(const PolygonVertex &);
		Vector4			GetNormal(const PolygonVertex &);
		Vector2			GetUV(uint channel, const PolygonVertex &);
		Color			GetColor(const Color &);

		float			merge_threshold;

		AutoPtr <Polygon> polygon;
		AutoList <Polygon *> polygons;
		List <String> materials;

public:

/*!
	@name	Polygon declaration.
	@{
*/
		void			Clear();
		void			BeginPolygon();

		void			PushVertex(const Vector4 &);
		void			PushNormal(const Vector4 &);
		void			PushUV(uint channel, const Vector2 &);
		void			PushColor(const Color &);

		void			EndPolygon(ushort material_index);
/*!
	@}
	@name	Material table declaration.
	@{
*/
		void			ClearMaterials();
		void			PushMaterial(const char *uri);
///	@}

		/// Set the vertex merge threshold.
		void			SetVertexMergeThreshold(float threshold)
		{	merge_threshold = threshold;	}

		/// Instantiate the current template description.
		Geometry		*Instantiate(const char *name);

		GeometryTemplate();
};

	} // Core
} // GS


#endif	// __NGEOMETRYTEMPLATE__