[mkgmap-dev] Commit: r2971: Avoid precalculation of area size for sea polygons created by the SeaGenerator.

Thu Jan 23 09:21:04 GMT 2014

Hi WanMil,

this doesn't seem to work. I still see the tag in the precompiled
sea data:

		<tag k="natural" v="sea"/>
		<tag k="mkgmap:cache_area_size" v="1048709826.5"/>

I don't fully understand the idea. The current implementation seems to 
calculate the value when precompiling and avoids recalculation when reading
the precompiled data.

Gerd
P.S. I found some nice performance improvements for the precompSeaMerger.
Reduced run time from 2200 sec to  ~330sec.
The most important change is to use BoundaryUtil.addToPath() instead of
Area.add().
See attached patch for the high-prec-branch.
I'll probably move the code for addToPath() from BoundaryUtil to
Java2DConverter.
PrecompSeaMerger.java.patch
<http://gis.19327.n5.nabble.com/file/n5794046/PrecompSeaMerger.java.patch>  

svn commit wrote
> Version mkgmap-r2971 was committed by wanmil on Thu, 16 Jan 2014
> 
> Avoid precalculation of area size for sea polygons created by the
> SeaGenerator.
> 
> For all sea polygons the area size was added as tag which increases the
> file size of the sea tiles but does not really help. The size only
> calculated the size of the sea in one sea tile and it's a bit random where
> the borders of a sea tile are. So the area size is not usefull.
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