% #1 : optionnal arguments
% #2 : the string containing the list of points
% (x1,y1);(x2,y2);... or the name file containing the points
% #3 : the code to place before the generated one
% #4 : the code to place after the generated one
% #1 : optionnal arguments
% #2 : the string containing the list of points
% (x1,y1);(x2,y2);... or the name file containing the points
% #3 : the code to place before the generated one
% #4 : the code to place after the generated one