Commit r3843: Improve throughput and efficiency of ShapeMergeFilter

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Commit r3843: Improve throughput and efficiency of ShapeMergeFilter

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Version mkgmap-r3843 was committed by gerd on Mon, 13 Mar 2017

Improve throughput and efficiency of ShapeMergeFilter

- Much faster for tiles with lots of islands (--precomp-sea)
- Finds a few more possible merges



http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=3843
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Re: Commit r3843: Improve throughput and efficiency of ShapeMergeFilter

Gerd Petermann
Hi all,

I've noticed that ShapeMergeFilter is still consuming lots of CPU time for some tiles with many islands
(using the default style).

A single tile in a Finland needed > 21 minutes with r3842, with r3843 it is done in ~ 80 seconds.

I've also noticed that it is not useful to call WrongAngleFixer only for merged shapes.
Looking at this now.

Gerd

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Von: mkgmap-dev <[hidden email]> im Auftrag von svn commit <[hidden email]>
Gesendet: Montag, 13. März 2017 15:40:40
An: [hidden email]; [hidden email]
Betreff: [mkgmap-dev] Commit r3843: Improve throughput and efficiency of        ShapeMergeFilter

Version mkgmap-r3843 was committed by gerd on Mon, 13 Mar 2017

Improve throughput and efficiency of ShapeMergeFilter

- Much faster for tiles with lots of islands (--precomp-sea)
- Finds a few more possible merges



http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=3843
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