[mkgmap-dev] special case where splitting fails without a log message

Tue May 25 11:51:25 BST 2021

Hi Gerd

OK - I've reproduced this. Is split-failed.osm self-intersecting? I'm
not sure how to tell from Josm, but it looks like it isn't. I get the
messages from shapeSplitter because it thinks it is and then the result
is not good - as expected.

I'll investigate more.

Ticker

On Tue, 2021-05-25 at 10:04 +0000, Gerd Petermann wrote:
> Hi Ticker,
> 
> while looking at the problems with sea I found this case where
> ShapeSplitter removes a small part of an island from a self
> -intersecting polygon in res 24.
> Compiled with mkgmap from trunk, default style and no options.
> 
> Look at 67.6742611, 14.6783525
> 
> Found this with some check code that compares the area of the
> original polygon with that of sum of the parts.
> 
> Gerd
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