/*   上下反転 ImageFilter  Ver 0.00   */
/*                                    */
/*                                    */
/*   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 FlipImageFilter extends ImageFilter
{
	/*   ---   Field   ---   */

	private int originalHeight;

	/*   ---   Constructor   ---   */

	public FlipImageFilter()
	{
	}

	/*   ---   フィルタリング   ---   */

	public void setDimensions(int width,int height)
	{
		originalHeight=height;
		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)
	{
		for (int iy=0;iy<=height-1;iy++)
		{
			consumer.setPixels(x,originalHeight-1-(y+iy),width,1,
			                   model,pixels,offset+iy*scansize,scansize);
		}
	}

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