/*   モノクロ化 ImageFilter  Ver 0.00   */
/*                                      */
/*                                      */
/*   by Atsushi               98/4/15   */


package net.antun.lib.awt.image;

import java.awt.Color;
import java.awt.image.RGBImageFilter;


public class MonochromeImageFilter extends RGBImageFilter
{
	/*   ---   Constructor   ---   */

	public MonochromeImageFilter()
	{
		canFilterIndexColorModel=true;
	}

	/*   ---   フィルタリング   ---   */

	public int filterRGB(int x,int y,int rgb)
	{
		int i;
	
		i=(((rgb>>16) & 0xff)+((rgb>> 8) & 0xff)+((rgb>> 0) & 0xff))/3;
		return ((rgb & 0xff000000) | (i<<16) | (i<<8) | (i<<0));
	}
}