[mkgmap-dev] polygon type 0x4a

Fri May 17 08:00:02 BST 2013

Hi Minko,

yes, thats what I wanted to say, but I don't know if Felix uses it.
Anyway I think it is a good idea to flag this with --check-styles.

Gerd

> Date: Fri, 17 May 2013 08:55:41 +0200
> From: ligfietser at online.nl
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: Re: [mkgmap-dev] polygon type 0x4a
> 
> Hi Gerd,
> I thought 0x4a are the polygons that correspond with the tile borders so it shouldnt be used at all in the style file for other purposes.
> 
> 
> > --transparent=false generates polygon type 0x4b.
> > Type 0x4a seems to be reserved for polygons used in the overview map:
> > * In addition to a low detail map, the overview map contains a number
> > of
> > type
> > * 0x4a polygons. These definition areas a labeled after and correspond
> > to
> > * the detail map img files.
> > 
> > I think that means that 0x4a should not be used in the style if an
> > overview
> > map is
> > wanted ?
> > 
> > Gerd
> > 
> > 
> > GerdP wrote
> > > Hi all,
> > >
> > > I was able to reproduce the error messages reported by Felx :
> > > http://gis.19327.n5.nabble.com/SeaGenerator-in-overview2-branch-tp5761296p5761396.html
> > >
> > > when I add something like this in the style\polygons file:
> > > natural=land [0x4a resolution 10]
> > > and use --precomp-sea.
> > >
> > > As I already wrote, the polygon type 0x4a is hardcoded in mkgmap:
> > > 1) mkgmap generates 0x4a polygons for the whole map when you don't
> > > use
> > > --transparent
> > > 2) polygons with type 0x4 are NOT divided by the
> > > PolygonSubdivSizeSplitterFilter
> > >
> > > I am not sure what to make of this.
> > > The default style doesn't assign 0x4a to a polygon, it doesn't even
> > > have a
> > > rule for the
> > > natural=land polygons generated by the SeaGenerator. I was already
> > > wondering why
> > > we generate them.
> > >
> > > I assume the special treatment of 0x4a in
> > > PolygonSubdivSizeSplitterFilter
> > > was added
> > > because of the bug that was fixed in r2612.
> > > This is what happens if I remove the special case for 0x4a:
> > > - With r2613 and the (unchanged) default style I see no change in
> > > any
> > > output file
> > > - With r2613 and the above modification I see that the error
> > > messages are
> > > gone
> > >
> > > So I guess I should just remove the special case?
> > >
> > > Gerd
> > > P.S. Felix, get well soon!
> > >
> > >
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> > 
> > > mkgmap-dev at .org
> > 
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> > 
> > 
> > 
> > 
> > 
> > --
> > View this message in context:
> > http://gis.19327.n5.nabble.com/polygon-type-0x4a-tp5761430p5761432.html
> > Sent from the Mkgmap Development mailing list archive at Nabble.com.
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