How to use the compas.geometry.add_vectors function in compas

def super_triangle(coords):
        centpt = centroid_points(coords)
        bbpts  = bounding_box(coords)
        dis    = distance_point_point(bbpts[0], bbpts[2])
        dis    = dis * 300
        v1     = (0 * dis, 2 * dis, 0)
        v2     = (1.73205 * dis, -1.0000000000001 * dis, 0)  # due to numerical issues
        v3     = (-1.73205 * dis, -1 * dis, 0)
        pt1    = add_vectors(centpt, v1)
        pt2    = add_vectors(centpt, v2)
        pt3    = add_vectors(centpt, v3)
        return pt1, pt2, pt3

def super_triangle(coords):
        centpt = centroid_points(coords)
        bbpts  = bounding_box(coords)
        dis    = distance_point_point(bbpts[0], bbpts[2])
        dis    = dis * 300
        v1     = (0 * dis, 2 * dis, 0)
        v2     = (1.73205 * dis, -1.0000000000001 * dis, 0)  # due to numerical issues
        v3     = (-1.73205 * dis, -1 * dis, 0)
        pt1    = add_vectors(centpt, v1)
        pt2    = add_vectors(centpt, v2)
        pt3    = add_vectors(centpt, v3)
        return pt1, pt2, pt3

def super_triangle(coords):
        centpt = centroid_points(coords)
        bbpts = bounding_box(coords)
        dis = distance_point_point(bbpts[0], bbpts[2])
        dis = dis * 300
        v1 = (0 * dis, 2 * dis, 0)
        v2 = (1.73205 * dis, -1.0000000000001 * dis, 0)  # due to numerical issues
        v3 = (-1.73205 * dis, -1 * dis, 0)
        pt1 = add_vectors(centpt, v1)
        pt2 = add_vectors(centpt, v2)
        pt3 = add_vectors(centpt, v3)
        return pt1, pt2, pt3

def super_triangle(coords):
        centpt = centroid_points(coords)
        bbpts  = bounding_box(coords)
        dis    = distance_point_point(bbpts[0], bbpts[2])
        dis    = dis * 300
        v1     = (0 * dis, 2 * dis, 0)
        v2     = (1.73205 * dis, -1.0000000000001 * dis, 0)  # due to numerical issues
        v3     = (-1.73205 * dis, -1 * dis, 0)
        pt1    = add_vectors(centpt, v1)
        pt2    = add_vectors(centpt, v2)
        pt3    = add_vectors(centpt, v3)
        return pt1, pt2, pt3

print(line_offset)

    """

    a, b = line
    ab = subtract_vectors(b, a)
    direction = normalize_vector(cross_vectors(normal, ab))

    if not is_item_iterable(distance):
        distance = [distance]
    distances = list(iterable_like(line, distance, distance[-1], as_single=False))

    u = scale_vector(direction, distances[0])
    v = scale_vector(direction, distances[1])
    c = add_vectors(a, u)
    d = add_vectors(b, v)
    return c, d

line_offset = offset_line(line, distance)
        print(line_offset)

    """

    a, b = line
    ab = subtract_vectors(b, a)
    direction = normalize_vector(cross_vectors(normal, ab))

    if not is_item_iterable(distance):
        distance = [distance]
    distances = list(iterable_like(line, distance, distance[-1], as_single=False))

    u = scale_vector(direction, distances[0])
    v = scale_vector(direction, distances[1])
    c = add_vectors(a, u)
    d = add_vectors(b, v)
    return c, d

line_offset = offset_line(line, distance)
        print(line_offset)

    """

    a, b = line
    ab = subtract_vectors(b, a)
    direction = normalize_vector(cross_vectors(normal, ab))

    if not is_item_iterable(distance):
        distance = [distance]
    distances = list(iterable_like(line, distance, distance[-1]))

    u = scale_vector(direction, distances[0])
    v = scale_vector(direction, distances[1])
    c = add_vectors(a, u)
    d = add_vectors(b, v)
    return c, d

def super_triangle(coords):
        centpt = centroid_points(coords)
        bbpts  = bounding_box(coords)
        dis    = distance_point_point(bbpts[0], bbpts[2])
        dis    = dis * 300
        v1     = (0 * dis, 2 * dis, 0)
        v2     = (1.73205 * dis, -1.0000000000001 * dis, 0)  # due to numerical issues
        v3     = (-1.73205 * dis, -1 * dis, 0)
        pt1    = add_vectors(centpt, v1)
        pt2    = add_vectors(centpt, v2)
        pt3    = add_vectors(centpt, v3)
        return pt1, pt2, pt3

def get_vertices_coordinates(self):
        xyzs = [vertex.co for vertex in self.geometry.vertices]
        return {vertex: add_vectors(self.location, xyz) for vertex, xyz in enumerate(xyzs)}