Square s1 = new Square(0,0,250);
Square s2 = new Square(250,0,250);
Square s3 = new Square(0,250,250);
Square s4 = new Square(250,250,250);
SquareEllipse se = new SquareEllipse(250);

void setup(){
  size(500,500);

}

void draw(){
  println(s1);
  /* */

  s1.rollover();
  s1.drawBox();
  s2.rollover(); 
  s2.drawBox();
  s3.rollover();
  s3.drawBox();
  s4.rollover();
  s4.drawBox();  
  se.drawSquareEllipse(); 
  se.rollover(); 
  /**/
}