code: private static boolean isClockWise( Grid g ) {
  		EllipseRotated_F64 v00 = g.get(0,0);
  		EllipseRotated_F64 v02 = g.columns<3?g.get(1,1):g.get(0,2);
  		EllipseRotated_F64 v20 = g.rows<3?g.get(1,1):g.get(2,0);
  
  		double a_x = v02.center.x - v00.center.x;
  		double a_y = v02.center.y - v00.center.y;
  
  		double b_x = v20.center.x - v00.center.x;
  		double b_y = v20.center.y - v00.center.y;
  
  		return a_x * b_y - a_y * b_x < 0;
  	}
docs: Uses the cross product to determine if the grid is in clockwise order