Today I have been making some progress on gPoly again, so time for another status update. The first part I worked on is the user interface, especially the texture library that contains the texture you can use on your polygons. And also other improvements like the interface used to define new projects.
But most of the time I spend on functionality to import shapefiles. Initially I had not planned this for the first version, but since I had some accurate vector data and imagery of the same airport, this would allow me to verify that the imagery is positioned correctly. As you can see on the screenshot below I think it is quite accurate, since the markings line up very well. So I am happy with that and can move on to some other features tomorrow.