IntegerArrayList.java

/*
 * Project Info:  http://jcae.sourceforge.net
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This program 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 Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 *
 * (C) Copyright 2005, by EADS CRC
 * (C) Copyright 2007, by EADS France
 */


package org.jcae.viewer3d.fd.sd;

import java.util.LinkedList;
/**
 *
 * @author Jerome Robert
 */
public class IntegerArrayList
{
	private static int GRANULARITY=4*512;
	private int subLastIndex=0;
	LinkedList<int[]> arrays;
	/** Creates a new instance of ArrayListExt */
	public IntegerArrayList()
	{
		arrays=new LinkedList<int[]>();
		arrays.add(new int[GRANULARITY]);
	}
	
	public void add(int i1,int i2,int i3,int i4)
	{
		if(subLastIndex>=GRANULARITY)
		{
			arrays.add(new int[GRANULARITY]);
			subLastIndex=0;
		}
		int[] tf=arrays.getLast();
		tf[subLastIndex]=i1;
		tf[subLastIndex+1]=i2;
		tf[subLastIndex+2]=i3;
		tf[subLastIndex+3]=i4;
		subLastIndex+=4;		
	}

	public int getSize()
	{
		return GRANULARITY*(arrays.size()-1)+subLastIndex;
	}
	
	public int[] toArray()
	{
		int[] r=new int[getSize()];
		int j=0;
		for(int i=0; i<arrays.size()-1;j+=GRANULARITY,i++)
			System.arraycopy(arrays.get(i),0,r,j,GRANULARITY);
		System.arraycopy(arrays.getLast(),0,r,j,subLastIndex);
		return r;
	}
}