-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Brent Easton wrote: > On 14/11/2007 at 11:16 PM [EMAIL PROTECTED] wrote: > > > If tile sets take so long to render why not render starting from a higher > > zoom level, rather than zoom level 12? This would also reduce re-rendering > > tiles that have not changed I think.
> Zoom 12 takes only a couple of minutes, it is Zoom 16 and Zoom 17 that is the > killer. Yes, but if you start at zoom 13 instead of 12 you have only 1/4 of the number of Z16 and Z17 tiles to render. This would also help with rendering the tiles that are currently too complicated and require the [EMAIL PROTECTED] clients to have several gigabytes of memory. So if a tile is known to be complicated, the clients could be sent a zoom 13 or zoom 14 tile to render instead of zoom 12, and the server could make the zoom 12 tile from the 4 or 16 partial zoom 12 tiles uploaded. If a tile is known to be simple, the client could be sent a zoom 11 or 10 tile and render 4 or 16 zoom 12 tiles. We could analyse a planet dump to determine if a tile is simple or complicated. This would be fine, except in the rare case that a bulk upload has happened on the area between when the planet was dumped and now, in which case, if the client can't cope it can return the tile, and the server can hand it out in smaller chunks next time. Robert (Jamie) Munro -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHO5aGz+aYVHdncI0RAk/UAJ41ZHILE80cMNodsEAxbJBVDGHiNwCfQ7Vz oVv67A7QO3GXgBfCFTypHD0= =u5S3 -----END PGP SIGNATURE----- _______________________________________________ Tilesathome mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/tilesathome
