docs: public void setFiducial( double x0 , double y0 , double x1 , double y1 ,
  							 double x2 , double y2 , double x3 , double y3 ) {
  		points.get(0).location.set(x0,y0,0);
  		points.get(1).location.set(x1,y1,0);
  		points.get(2).location.set(x2,y2,0);
  		points.get(3).location.set(x3,y3,0);
  	}