[OSM-dev] Nestoria Tiles Write Up

[Etienne]

On 10/26/06, Nick Whitelegg <Nick.Whitelegg at solent.ac.uk> wrote:
>
> >see my comments towards the end ;D
>
> >The librsvg approach looks interesting, as ideally what is needed is a
> >lightweight SVG to PNG converter (command line based and easily
> >installable without a long dependency list). Does librsvg have many
> >dependencies?
>
> Just a few ideas - not all might be 100% feasible/sensible - but thinking
> out loud.
>
> Apologies for following up my own post but I got an answer to this one...
> it does seem it has quite a long list of dependencies. In the absence of a
> server machine powerful enough to serve SVG to clients,


Serving transforming .osm to .svg is not that demanding.  The current
Osmarender is pretty quick especially on tile sized chunks.  It can be made
even quicker by reducing the amount of detail which you want to do anyway at
some zoom levels.

I think converting .svg to .png is probably a more demanding process.

Both FF and IE do a fairly decent job of rendering SVG.


and browsers which
> can render SVG nicely (the ideal solution) an automated, distributed
> rendering process sounds ideal. However participants ideally shouldn't
> need to download a lot of dependencies to run it. Maybe (and this needs
> more research) a Java solution (xalan/batik) would be better, as once you
> have the JRE installed it's easy to run Java stuff. Also it would be easy
> on both Linux and Windows. *However* I haven't experimented with batik so
> am not sure how good it is at rendering tiles.
>
> The other approach that could be taken is something of a departure and
> wouldn't go via SVG at all. Some GUI toolkits (e.g. qt) apparently do nice
> rendering. Even the JOSM mappaint rendering with a few tweaks could
> perhaps be good enough. So one option could be a standalone OSM browser
> (based on JOSM???) which downloads the data, renders it then uploads it to
> a central server.
>
> Comments?
>
> Nick
>
>
>
>
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