# Draw simple boundary based on the lines and depth

def generate_mesh(lines: list, z_origin: float, depth: float, symmetric: bool = True):
    if symmetric:
        depth1 = depth/2
        depth2 = -depth/2
        origin = create_3D(lines, z_origin, depth1)
        extruded = create_3D(lines, z_origin, depth2)
    else:
        origin = create_3D(lines, z_origin, 0)
        extruded = create_3D(lines, z_origin, depth)

    vert_lines = create_vert_lines(origin, extruded)

    print(f"Result = {origin} / {extruded}  / {vert_lines}")

    return origin +  vert_lines + extruded


def create_vert_lines(origin, extruded):
    vert_lines = []
    for d3_point_o, d3point_e in zip(origin, extruded):
        for sp3d_1, sp3d_2 in zip(d3_point_o, d3point_e):
            new_line = sp3d_1, sp3d_2
            vert_lines.append(new_line)
    return vert_lines


def create_3D(lines, z_origin, depth):
    line_loop = []
    for coordinate2d in lines:
        start, end = coordinate2d

        xs,ys = start
        coordinate3d_start_orig = xs, ys, z_origin + depth

        xe, ye = end
        coordinate3d_end_orig = xe, ye, z_origin + depth

        line3d_orig = coordinate3d_start_orig, coordinate3d_end_orig

        line_loop.append(line3d_orig)

    return line_loop