title: Drawing 3D lines in WPF
body: <p>I am working on a CAD application and thinking of using WPF for rendering my entities.</p>
  <p>But it seems like WPF doesn't support drawing 3D lines. Is there any ways for drawing 3D lines in WPF?</p>
  <p>I don't like to create a mesh for each line entity I need to draw as I am afraid, this would cause a major performance hitch for me as I would have to create number of line entities in my application.</p>
  <p>If this is not possible through WPF, will it be possible to do this in DirectX 9 or 10? Can I mix DirectX in WPF? I mean some way of interop?</p>
  <p>Many Thanks</p>