You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: HELP_polyLineIntersect.m
    path of file: ./repos/GIBBON/docs
    
    the code of the file until where you have to start completion: %% polyLin
    
function

%%
clear; close all; clc;

%% Syntax
% |[Vn]=polyLineIntersect(V,n_cut,cutLevel,isClosed);|

%% Description
% Computes the intersection points between a polygon defined by the vertex
% array V and a line defined the the normal vector n_cut and the cutLevel.
% If isClosed==1 (True) then the curve is assumed to be closed (additional
% line element from start to end