class mesh
{
public:
private:
 // vectors of vertices, uvarrays, indexarray, vector of texture
 // effectclasses applied to this mesh
}

/*
each effect class describes some effect that is associated with the mesh
e.g.: a certain vertex/pixel shader effect
or rendering grass onto the surface of the mesh which required the mesh class as input to adjust the grass to the topology of the surface
*/

/*
at loading time a shader class is bound to the effect class to determine the quality of the scene, the shader class does the rendering the effect class delivers the information used by the shaderclass to render the effect e.g.: positions normals tangents ....
*/

//select vertex in 3d		void select_vertex(const vector3d& vecCamPos, const vector3d& vecPickDir, float32 flRadius, uint32array& a)		{			uint32 i;			float32 flDistance;			vector3d vecNewPos;			vector3d vecNewDir;			vector3d vecPnt;			plane pl;			ray_list	rl;						//clear the index selection array			a.clear();			//check all vertices if they are on the ray			for(i=0;i<m_Vertices.size();i++)			{				if(vertex_on_ray(i,vecCamPos,vecPickDir,flRadius,flDistance) == true)				{					rl.push_back(vertex_selection_pair(i,flDistance));				}			}			//then sort them by distance			rl.sort(ray_list_distance());			//if these lists aren t equal the vertex selection deselection cycle is broken and 			//we need to start a new cycle			if(equal_ray_list(m_LastRayList,rl) == false)				m_bSelectionSwitch = false;			//now select the first element that is not yet selected if we are in the selection cycle			for(ray_list::iterator iterJ=rl.begin(); iterJ!=rl.end(), m_bSelectionSwitch==false; iterJ++)			{				if(m_Vertices[iterJ->first].third.selected() == false)				{					m_Vertices[iterJ->first].third.select();					m_LastRayList = rl;					//add vertex to selection					a.push_back(iterJ->first);										return;				}			}			//if no unselected vertex was found lets start the deselection cycle			m_bSelectionSwitch = true;			//now deselect the first vertex that is selected			for(ray_list::iterator iterJ=rl.begin(); iterJ!=rl.end(); iterJ++)			{				if(m_Vertices[iterJ->first].third.selected() == true)				{					m_Vertices[iterJ->first].third.deselect();					m_LastRayList = rl;									return;				}			}		};