/*   左右反転 ImageFilter  Ver 0.10   */
/*                                    */
/*                                    */
/*   by Atsushi             98/4/13   */


package net.antun.lib.awt.image;

import java.awt.Dimension;
import java.awt.image.ColorModel;
import java.awt.image.ImageFilter;


public class MirrorImageFilter extends ImageFilter
{
	/*   ---   Field   ---   */

	private int originalWidth;

	/*   ---   Constructor   ---   */

	public MirrorImageFilter()
	{
	}

	/*   ---   フィルタリング   ---   */

	public void setDimensions(int width,int height)
	{
		originalWidth=width;
		consumer.setDimensions(width,height);
	}

	public void setHints(int hint)
	{
		consumer.setHints(hint & (COMPLETESCANLINES | SINGLEFRAME));
	}

	public void setPixels(int x,int y,int width,int height,ColorModel model,
	                      byte pixels[],int offset,int scansize)
	{
		byte mirror[];
	
		mirror=new byte[width];
		for (int iy=0;iy<=height-1;iy++)
		{
			for (int ix=0;ix<=width-1;ix++)
			{
				mirror[width-1-ix]=pixels[offset+ix+iy*scansize];
			}
			consumer.setPixels(originalWidth-1-(x+width-1),y+iy,
			                   width,1,model,mirror,0,width);
		}
	}

	public void setPixels(int x,int y,int width,int height,ColorModel model,
	                      int pixels[],int offset,int scansize)
	{
		int mirror[];
	
		mirror=new int[width];
		for (int iy=0;iy<=height-1;iy++)
		{
			for (int ix=0;ix<=width-1;ix++)
			{
				mirror[width-1-ix]=pixels[offset+ix+iy*scansize];
			}
			consumer.setPixels(originalWidth-1-(x+width-1),y+iy,
			                   width,1,model,mirror,0,width);
		}
	}
}