Jeffrey Warren wrote: > Wow, this is fantastic and very exciting! Stefan - by javascriptsockets > were you thinking of the thru-flash technique for sockets?
I have two options; I was indeed looking at the flash technique for native protocol access. Alternatively the Cherokee Webserver has its own 'dbslayer' implementation this allows an SQL database to be queried over HTTP and outputed in the common formats [json/xml/cvs/...] > I'd love to > help out if I can. Right now, Cartagen doesn't use sockets, but small > Ajax requests every 1/3 of a second. Latency is low but not quite > realtime... it's within about a second but depends on the size of the > plot requested of course. I've been avoiding Flash because it's not > available on the iPhone or Android, and it'd be nice to have almost the > same renderer/editor codebase on mobile devices and PC. I don't want to reinvent the wheel, so I will checkout how you build this thing and probably hook in some code. > Just curious, how does Mapnik or Omsarender do it? Surely they don't > actually render every node of a way for very large bboxes? In the default Mapnik case polylines are fetched, so that is basically an operation that already has a materialized linestring. Since the tables know what type the line will be it is just a draw this line at that point. [A bit more complex due to layer = ...] Stefan _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
