title: Creating a smooth nurb from list of points
body: <p>I am developing a 3D graphic application in which the user can draw curves.
  I record the curve that is drawn by the user and i would like to create a smooth nurb from the recorded set of points. 
  I tried using the openNurbs library but i could not find a way to do the fitting using the library.
  How can i fit a set of points to a nurb?</p>