<div dir="ltr">Is it only much slower because of not using precomp sea? Or will it be much slower in general? And what is much slower for say Europe continent map? If a modern 4core/8thread processor needs 30 minutes more I would prefer the old way knowing it is worse (if the time difference is negligible with precomp-sea then that would be great).</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 7 Jun 2021 at 12:26, Ticker Berkin <<a href="mailto:rwb-mkgmap@jagit.co.uk">rwb-mkgmap@jagit.co.uk</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Gerd<br>
<br>
This is going to take some studying to work out the implications. Can't<br>
do much for the next few days however, but will look carefully at the<br>
end of the week.<br>
<br>
Ticker<br>
<br>
On Sun, 2021-06-06 at 14:02 +0000, Gerd Petermann wrote:<br>
> Hi,<br>
> <br>
> the attached patch improves the overview map, but so far only when<br>
> precomp-sea is NOT used. <br>
> I tested it with --generate-sea=multipolygon,floodblocker so that<br>
> mkgmap really has a multipolygon with the natual=sea data.<br>
> <br>
> For each level in the overview map it uses the original multipolygon<br>
> data to compute the rings which will might visible at the given<br>
> resolution. This requires more time compared to the current code but<br>
> the result is much better and some fine tuning is possible.<br>
> <br>
> To be able to use this also with --precomp-sea we need some changes<br>
> in the code which generates sea.zip so that one multipolygon relation<br>
> for each tile is stored. <br>
> <br>
> I've uploaded the results here: <br>
> <a href="https://files.mkgmap.org.uk/download/511/compare.7z" rel="noreferrer" target="_blank">https://files.mkgmap.org.uk/download/511/compare.7z</a><br>
> What do you think?<br>
> <br>
> Gerd<br>
> <br>
> <br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>Felix Hartman - Openmtbmap.org & VeloMap.org<br></div><br></div></div></div></div></div></div>