Evaluate Polyline / Give a Polyline an outline

[SRSDS]

I need to assess a polyline to understand what to do with it.

I have the number and location of vertices but need some more information.

Dim obj As DBObject = trans.GetObject(per.ObjectId, OpenMode.ForRead)
Dim lwp As Polyline = TryCast(obj, Polyline)
If lwp IsNot Nothing Then
      Dim vn As Integer = lwp.NumberOfVertices
      For i As Integer = 0 To vn - 1
          Dim pt As Point2d = lwp.GetPoint2dAt(i)
          ed.WriteMessage(vbLf & pt.ToString())
      Next
End If

 At the moment I think I only need the number of arcs and their radii.

The goal is to display polylines with a thickness but without the grippoints of the outline. 

I know this can be done by setting giving the polyline a global width and setting FILLMODE to 0 but I don't like the way it draws arcs and I can't snap to the outline.

If someone can suggest something to achieve what I'm after I'd really appreciate it.

[SRSDS]

I've just found this thread which explains how to determine which segments are arcs.

http://forums.autodesk.com/t5/net/get-polyline-segment-lengths/td-p/3142838

This may be a longshot but if someone happens to have a snippet of code showing how to outline a polyline it would be helpful.

[Keith.Brown]

Perhaps Norman's blog can be of service.

http://drive-cad-with-code.blogspot.com/2014/09/moving-mouse-cursor-to-trace-polyline.html

I would scroll down to the bottom first and view the video.  At approximately the 20s mark you can see how the polylines are outlined.  I would then study his code to see how he did it.