public Mat22 Add(Mat22 b) { // return new Mat22(ex.add(B.ex), col2.add(B.ey)); Mat22 m = new Mat22(); m.Ex.X = Ex.X + b.Ex.X; m.Ex.Y = Ex.Y + b.Ex.Y; m.Ey.X = Ey.X + b.Ey.X; m.Ey.Y = Ey.Y + b.Ey.Y; return m; }