Can we just imagine some generic coordinate conversion formula and calculate its constants by comparing encoded and original coordinates for a few points?
In case of a plane it's something like (Xenc,Yenc) = (X*A11+Y*A12,X*A21+Y*A22) + (B1,B2).
Also what is the program that uses those .db files? I can't find "trails", "trail_segs" strings in the MapSource.exe.
Got it, it's basecamp.
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