Construct this pattern
> restart:
> x:=cos(t);
> y:=sin(t);
> m:=[x+t*sin(s), y+t*cos(s), s=-Pi..Pi];
> t:=n*Pi/20;
> w:=evalf(m):
> plot([w$n=1..100],color=red,axes=none,scaling=constrained);
maple