def get_latt_vecs_from_latt_consts(a, b, c, alpha=90, beta=90, gamma=90):
    """Convert lattice constants to lattice vectors in right-hand system

    Currently support orthormrhobic lattice only!!!

    Args:
        a, b, c (float): length of lattice vectors
        alpha, beta, gamma (float): angles between lattice vectors in degree.
            90 used as default.
    """
    a = abs(a)
    b = abs(b)
    c = abs(c)
    return [[a, 0, 0], [0, b, 0], [0, 0, c]]