B-spline

B-spline is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

Task

Generate a b-spline curve with a list of 12 points and plot or save image :

Coordenates of control point:

   start=171,171 
   1 185,111, 
   2 202,109, 
   3 202,189 
   4 328,160 
   5 208,254 
   6 241,330 
   7 164,252 
   8 69,278 
   9 139,208 
   10 72,148 
   end=168,172