Hi, On 26.06.2012 23:05, Frederik Ramm wrote:
3. Modify style as per 1., double size of meta tiles to 4096x4096, and double size of tiles to 512x512. This avoids the increase in font nastiness *and* it has the nice effect that one "Retina" tile at a certain zoom level shows exactly the same content as a normal tile, just on 512x512 instead of 256x256 and therefore at twice the resolution. It would, however, require clients (OpenLayers et al.) to work with the larger tile size.
I just tried this out and found that, on a standard non-mobile Firefox browser, OpenLayers displays the new 512x512 tile just fine, it scales it to 256x256 in the browser. I can then use the browser's "zoom" function to blow up the OpenLayers display and while everything becomes jaggy when I do this with normal tiles, the map still looks nice when using the double resolution tiles. Does this mean that it would be an acceptable viewing experience for mobile users as well?
mod_tile does not require modifications to work with 512x512 tiles; Tirex requires a couple. Also, I'm running this on the standard OSM style and Mapnik 2.0 using the AGG renderer's "scale factor" parameter and it doesn't scale shields or bitmap icons; I'll see if that's any better with 2.1 - else I'll have to do the old style "take xml and double all the sizes" route.
Bye Frederik -- Frederik Ramm ## eMail [email protected] ## N49°00'09" E008°23'33" _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
