//<pre>
import java.awt.*;
import java.net.*;
import java.awt.image.*;

public class ImageBuffer
{
   public ImageBuffer(int width, int height) {
      init(width, height);
   }
   public ImageBuffer(Image src, Component component) {
      try {
         MediaTracker mt = new MediaTracker(component);
	 mt.addImage(src, 1);
         mt.waitForAll();
	 init(src.getWidth(component), src.getHeight(component));
         (new PixelGrabber(src,0,0,width,height,pix,0,width)).grabPixels();
      }
      catch (InterruptedException e) { }
   }
   public int getWidth() { return width; }
   public int getHeight() { return height; }
   public int get(int x, int y) {
      x = Math.max(0, Math.min(width-1, x));
      y = Math.max(0, Math.min(height-1, y));
      return pix[x + y * width];
   }
   public void set(int x, int y, int rgb) {
      if (x >= 0 && x < width && y >= 0 && y < height)
	 pix[x + y * width] = rgb;
   }
   void init(int w, int h) {
      width = w;
      height = h;
      pix = new int[w * h];
   }
   public int pix[] = null, width = 0, height = 0;
}