Steve Gifford

Roping in @TimSylvester I'd suggest using the main branch unless there's something you really want in develop.

I'm afraid we're not going to load up your file and check it out. If you can describe the problem, perhaps take a picture or a video if there's visual...

This depends on how you're creating the road. How are you creating the road?

Looks like the polygon may be in the wrong order. I'd try reordering it and see if that helps.

All we're doing is passing the data to the old GL tessellator. So you'll want to try a few things to figure out what it doesn't like your polygon: -...

Crossing 180 might be a problem, it's true. You could try breaking up the polygon across that boundary.

I would recommend explicitly clipping your data on that boundary to get better control of the display.

Sorry, not sure what you're asking.

Offline and online maps only differ in their tile source. You'll need to look at your style sheet, if you have one, and how you're setting up your loader.

They'll need to go through a conversion step after we're done, but it won't be as difficult as doing the 3D work in the first place.