public void quadMirror()
{
  int vertAxis=this.getWidth()/2;
  Pixel leftPixel=null;
  Pixel rightPixel=null;
  for (int y=0; y<this.getHeight(); y++)
  {
    for (int x=0; x<vertAxis; x++)
    {
      leftPixel=this.getPixel(x,y);
      rightPixel=this.getPixel(this.getWidth()-1-x,y);
      leftPixel.setColor(rightPixel.getColor());
    }
  }
  int horAxis=this.getHeight()/2;
  Pixel topPixel=null;
  Pixel bottomPixel=null;
  for (int x=0; x<this.getWidth(); x++)
  {
    for (int y=0; y<horAxis; y++)
    {
      topPixel=this.getPixel(x,y);
      bottomPixel=this.getPixel(this.getHeight()-1-x,y);
      bottomPixel.setColor(topPixel.getColor());
    }
  }
}