/*   ぼかし ImageFilter  Ver 0.10   */
/*                                  */
/*                                  */
/*   by Atsushi            98/4/9   */


package net.antun.lib.awt.image;

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


public class ObscureImageFilter extends SinglepassImageFilter
{
	/*   ---   Field   ---   */

	private int range;

	/*   ---   Constructor   ---   */

	public ObscureImageFilter(int range)
	{
		this.range=range;
	}

	/*   ---   フィルタリング   ---   */

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

	protected void filterImage()
	{
		int rgb,p[];
		int r,g,b,a;
		int s;
	
		p=new int[originalSize.width];
		for (int y=0;y<=originalSize.height-1;y++)
		{
			for (int x=0;x<=originalSize.width-1;x++)
			{
				r=g=b=a=0;
				s=0;
				for (int ix=-range;ix<=range;ix++)
				{
					for (int iy=-range;iy<=range;iy++)
					{
						if (0<=x+ix && x+ix<originalSize.width &&
						    0<=y+iy && y+iy<originalSize.height)
						{
							rgb=original[(x+ix)+(y+iy)*originalSize.width];
							a+=(rgb>>24) & 0xff;
							r+=(rgb>>16) & 0xff;
							g+=(rgb>> 8) & 0xff;
							b+=(rgb>> 0) & 0xff;
							s++;
						}
					}
				}
				p[x]=((a/s)<<24) | ((r/s)<<16) | ((g/s)<<8) | ((b/s)<<0);
			}
			consumer.setPixels(0,y,originalSize.width,1,defaultRGB,
			                   p,0,originalSize.width);
		}
	}

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

	/*   ---   文字列化   ---   */

	public String toString()
	{
		return getClass().getName()+"[range="+range+"]";
	}
}