% ---------------------  ClosedSpline2d.m  -----------------------
%
% function [xc,yc,s] = ClosedSpline2d(x,y)
%
% inputs x(1:n),y(1:n). Require that x(n)==x(1), y(n)==y(1)
% outputs xc(1:4;1:n-1),yc(1:4;1:n-1), s
%
% Computes the coefficients for the 2-d closed curve Spline as 
% described in the programming assignment. First computes
% the arclengths s(1:n) and then applies PeriodicSpline to
% both (s,x) and (s,y) to get coefficient matrices xc and yc
%

function [xc,yc,s] = ClosedSpline2d(x,y)


disp('%%%%%%%%% YOU NEED TO WRITE ClosedSpline2d %%%%%%%%%%%')