I'm still reading this thread but haven't tried the new mkgmap.jar yet. I was hoping for a way to smooth polygons and Gerd's reply to Enrico indicates that the patch and new binary only help smoothing lines, so I stopped paying attention. But I'm interested in learning more about mkgmap and the map making process in general.
I saw another post a while back where Gerd says something along the lines of "people still don't know how to use a patch".
The documentation for mkgmap itself is pretty thin. There's the style manual, and the little blurb about TYP files but nothing to tie it all together. And I've not found anything about how to use mkgmap other then the options text file. The explanatory statements in there are helpful but leave a lot unsaid. A careful reading of the "Optimization Options", for example, left me with more questions than answers.
You are the developers of the program, so many of these things must seem glaringly obvious. But they are not. How is one supposed to know how to utilize a patch? Is there a users manual somewhere?
Thanks,
Dave