/***************************************************************************
 *                               Point3DList.cs
 *                            -------------------
 *   begin                : May 1, 2002
 *   copyright            : (C) The RunUO Software Team
 *   email                : info@runuo.com
 *
 *   $Id$
 *
 ***************************************************************************/

/***************************************************************************
 *
 *   This program 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.
 *
 ***************************************************************************/

using System;

namespace Server
{
	public class Point3DList
	{
		private Point3D[] m_List;
		private int m_Count;

		public Point3DList()
		{
			m_List = new Point3D[8];
			m_Count = 0;
		}

		public int Count
		{
			get
			{
				return m_Count;
			}
		}

		public void Clear()
		{
			m_Count = 0;
		}

		public Point3D Last
		{
			get{ return m_List[m_Count - 1]; }
		}

		public Point3D this[int index]
		{
			get
			{
				return m_List[index];
			}
		}

		public void Add( int x, int y, int z )
		{
			if ( (m_Count + 1) > m_List.Length )
			{
				Point3D[] old = m_List;
				m_List = new Point3D[old.Length * 2];

				for ( int i = 0; i < old.Length; ++i )
					m_List[i] = old[i];
			}

			m_List[m_Count].m_X = x;
			m_List[m_Count].m_Y = y;
			m_List[m_Count].m_Z = z;
			++m_Count;
		}

		public void Add( Point3D p )
		{
			if ( (m_Count + 1) > m_List.Length )
			{
				Point3D[] old = m_List;
				m_List = new Point3D[old.Length * 2];

				for ( int i = 0; i < old.Length; ++i )
					m_List[i] = old[i];
			}

			m_List[m_Count].m_X = p.m_X;
			m_List[m_Count].m_Y = p.m_Y;
			m_List[m_Count].m_Z = p.m_Z;
			++m_Count;
		}

		private static Point3D[] m_EmptyList = new Point3D[0];

		public Point3D[] ToArray()
		{
			if ( m_Count == 0 )
				return m_EmptyList;

			Point3D[] list = new Point3D[m_Count];

			for ( int i = 0; i < m_Count; ++i )
				list[i] = m_List[i];

			m_Count = 0;

			return list;
		}
	}
}