import java.awt.*;
import java.net.*;

public class Blur extends PixApplet
{
   ImagePyramid pyramid;
   Image src;
   double t = 1, w = 1;

   public boolean mouseDrag(Event e, int x, int y) {
      t = Math.max(0, Math.min(1, (double)x / bounds().width));
      w = Math.max(0, Math.min(1, (double)y / bounds().width));
      return true;
   }

   public void setPix(int frame) {
      super.setPix(frame);

      if (pyramid == null) {
         try {
	    src = getImage(new URL(getCodeBase(), getParameter("texture0")));
         } catch (Exception e) { }
	 pyramid = new ImagePyramid(new ImageBuffer(src, this));
      }

      double s = .001 + t * (.3 - .001);
      for (int x = 0 ; x < W ; x++)
      for (int y = 0 ; y < H ; y++) {
	 double u = (double)x / W;
	 double v = (double)y / H;
	 double rr = (u-.5) * (u-.5) + (v-.5) * (v-.5);
	 pix[xy2i(x,y)] = pyramid.get(u, v, s + w * (16 * rr - s));
      }
   }
}