code: @Override
      public void makeNoise(BufferedImage image) {
          int width = image.getWidth();
          int height = image.getHeight();
  
          // the curve from where the points are taken
          CubicCurve2D cc = new CubicCurve2D.Float(width * .1f, height
                  * RAND.nextFloat(), width * .1f, height
                  * RAND.nextFloat(), width * .25f, height
                  * RAND.nextFloat(), width * .9f, height
                  * RAND.nextFloat());
  
          // creates an iterator to define the boundary of the flattened curve
          PathIterator pi = cc.getPathIterator(null, 2);
          Point2D tmp[] = new Point2D[200];
          int i = 0;
  
          // while pi is iterating the curve, adds points to tmp array
          while (!pi.isDone()) {
              float[] coords = new float[6];
              switch (pi.currentSegment(coords)) {
                  case PathIterator.SEG_MOVETO:
                  case PathIterator.SEG_LINETO:
                      tmp[i] = new Point2D.Float(coords[0], coords[1]);
              }
              i++;
              pi.next();
          }
  
          // the points where the line changes the stroke and direction
          Point2D[] pts = new Point2D[i];
          // copies points from tmp to pts
          System.arraycopy(tmp, 0, pts, 0, i);
  
          Graphics2D graph = (Graphics2D) image.getGraphics();
          graph.setRenderingHints(new RenderingHints(
                  RenderingHints.KEY_ANTIALIASING,
                  RenderingHints.VALUE_ANTIALIAS_ON));
  
          graph.setColor(_color);
  
          // for the maximum 3 point change the stroke and direction
          for (i = 0; i < pts.length - 1; i++) {
              if (i < 3) {
                  graph.setStroke(new BasicStroke(_width));
              }
              graph.drawLine((int) pts[i].getX(), (int) pts[i].getY(),
                      (int) pts[i + 1].getX(), (int) pts[i + 1].getY());
          }
  
          graph.dispose();
      }
docs: {@inheritDoc}