I have made some progress again on the gPoly tool. The two main features I worked on today are finishing the Bezier curves and extending the user interface so that you can edit the texture mapping of the polygons. Since these feature are difficult to explain with text or pictures, I have made a little preview video showing how you could use them. You can view this video here.
Next item I am going to work on is vertex snapping. When that is done I will start laying down the polygons for my test airport. I am looking forward to actually make some real polygons for a scenery.