Rotates mesh about the y-axis.

        Parameters
        ----------
        angle : float
            Angle in degrees to rotate about the y-axis.

def rotate_y(self, angle):
        """
        Rotates mesh about the y-axis.

        Parameters
        ----------
        angle : float
            Angle in degrees to rotate about the y-axis.

        """
        axis_rotation(self.points, angle, inplace=True, axis='y')