I've been looking for a way to put the floor at the airport on a floor level. In FSX, Prepare Sim this is possible.
In sketchup I created a polygon with the texture of the airport. This texture is exported to dae.
This file is then loaded into the modelconverter.
Then create a MDL file from it.
With this mdl file I created a ground polygon with all data including the height of the course, etc.
Then create a FSX BGL file from this file.
This file will be imported into the Modelconverter and a TSC and TGI file will be created...how to work with wiki...
The result enclosed.... see picture
Unfortunately, I can't go on like this yet, because the ground is still floating and the texture is not lying correctly on the ground despite correct Lon and Lat and degrees.
I am aware that the file is twisted by Modelconverter with imported.
I mean that can a way to make flatten Grounds on airports.