[mkgmap-dev] [PATCH v1 + v1] fix overview bounding box rounding + splitter rounding

Mon Jan 25 22:05:51 GMT 2010

v1 + v1 - OK, here's the matched pair - patches for both the splitter
and mkgmap.

With these in place, the mapsource mouse works as expected across all
tile boundaries right up to the outer boundaries. No weird overlap
of tile and overview map. Spot on.

Please could some others give this a test and confirm that the rounding
is now correct.

-----------------

Thinking some more about what I was seeing in mapsource when
mousing around the Baltic map, I came to the conclusion that the edges
of the overview map bounding boxes where in the wrong place so I took a
look at mkgmap where it rounds those coords and came up with the
attached fix. No great theory here, I just dicked around until it
worked as I expected.

For the Baltic map, the mouse now works right up to each boundary in
both lat and lon directions whereas before it would only work right on
one side of each boundary.

Please try the patch, especially for maps that are W of Greenwich and S
of the equator and see if the overview boxes are right.

Cheers,

Mark
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