The functionality in ModelConverterX to create lower level of detail versions of a model was running very slow for complex objects. I have not fixed that completely (yet), but I have made some changes to this functionality that should at least make it easier to work with. The calculation that simplifies the object is now running on a different thread, so that at least the rest of the tool should remain more responsive. I have also added a progress bar, so that you can see how far in the simplification process the tool is already. See the screenshot of the new dialog below.

As you might see there are some more changes. I have removed the 3D preview from the LOD Creator dialog. Instead the mean 3D preview is used now to display the result of the LOD Creator dialog. You can still select the LOD you want to see from the LOD Creator dialog though.

Optimizing the simplication code further, so that it will run faster is still on my todo list. But at the moment I am also busy with preparing for the new gPoly ground polygon tool. So I am not sure which one will get my attention first. Now that I am talking about the gPoly tool, I would still be happy to receive your input on what you would like to see in a tool for custom ground polygons.