title: GLU NURBS - how to set control point weights?
body: <p>I'm writing a NURBS class that uses OpenGL's GLU extension to do rendering, but I just realized I have no idea how to set the control point weights.  It's not in the Red Book or the GLU documentation, and the web doesn't mention much of it, either.  Is it possible that GLU's NURBS implementation just doesn't include this feature?  If so, I'm surprised they got away with calling it NURBS and not just B-splines.</p>
  
  <p><strong>Edit</strong>: Changed "knot weights" to "control point weights".</p>