[Tilesathome] Proposal: New T at H Server structure

[Marc Schütz]

Am Montag, 2. Juni 2008 19:31 schrieb Dirk-Lüder Kreie:
> spaetz schrieb:
> > On Mon, Jun 02, 2008 at 10:08:06AM -0700, Alan Millar wrote:
> >> The main problem I imagine is large labels which might span across z13
> >> tiles.  Perhaps a hybrid semi-captionless approach would work.  Render
> >> the z13 tiles with way labels but not POI labels, and render a z12
> >> caption layer with POI labels and composite them.  All local to the t at h
> >> client; only upload the final results like now.
> >
> > That leaves only large areas (e.g. forests) that cover a full z13 tile to
> > be solved.
> >
> >> This is sounding complicated, but could be possible without impacting
> >> all other current z12 dependencies.
> >
> > Yep, this is the way I would think it could work easiest.
>
> I don't think there are many tiles that fail on z12 directly. It's
> mostly the higher zooms that operate on the full svg that kill inkscape.
>   (the z13..17 tiles are all cut from svgs that cover the full z12 area)
>
> There has been done some work towards splitting that up, but it's not as
> easy as just cutting them up. You have to preserve labels, areas and so
> forth.

Large labels can only result from place names (to my knowledge), so you could 
simply keep all nodes with a name (see my other reply).

As to areas, they could be copied into the subtiles as well, if they cross 
subtiles (only those are relevant).

Regards, Marc
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