public void PixBlt(int xs, int ys, int w, int h, int xd, int yd)
    {
        for (int j = 0; j < h; j++) {
            for (int i = 0; i < w; i++) {
                this.setPixel(raster.getPixel(xs+i, ys+j), xd+i, yd+j);
            }
        }
    }