Convert vrml/wrl/Shape_IndexedFaceSet into a curve

Hello everybody! I have previously imported a .wrl file via blender 2.79, and are trying to discover ways to convert this format into a curve. When I select the object and try, it fails (nothing happens).

If no such tool/method exists, I would be very happy to help the development of this addon to the software, and talk to the right people to implement this. It is all mathematics. Thank you.