[mkgmap-dev] [Patch v1] improve multipolygon throughput

Sat Jun 21 08:56:55 BST 2014

Hi Gerd,

sound great!! I'll have a look on it during the next days.

WanMil

> Hi all,
>
> while looking at the boundary preprocessor code I found
> a nice improvement for the multipolygon code.
> Some mp relations contain many small polygons which are added
> to one java area.
> This works much faster when the small polygons come first.
> I've committed the patch in the new bounds branch which also
> contains other improvements.
>
> @WanMil:
> With this patch, the calculation of complex boundary relations
> is ~ 4.5 times faster. I've tested this with the old version of the
> south-america boundaries: r3303 reqired ~ 2774 secs, r3304 612 secs
> Do you see any possible problems?
>
> Gerd
>
> small_first-v1.patch
> <http://gis.19327.n5.nabble.com/file/n5808968/small_first-v1.patch>
>
>
>
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