On Tue, Oct 27, 2009 at 12:06 AM, Randy <[email protected]> wrote: > Renaud MICHEL wrote: >> Maybe the building itself should be tagged as bridge? >> Or only the part that is actually over the road? > > I wouldn't want to do that permanently, but I did try it for a test. After > several hours, the rendering didn't change, so I deleted the bridge attribute. > > I'll just go ahead and use layers, and some day the rendering will probably > get fixed. I'll check to make sure there is a bug report, though.
This is a case where the renderers just aren't designed for this. What really should be done, is tag it in the way that best describes reality, and hope that the renderers will eventually draw it right. I would suggest keeping the road at layer=0 (or whatever layer surrounding roads are at) and the part of the building that goes over it should be building=yes, layer=1, bridge=yes. Because technically, it does indeed form a bridge over the road. Actually, if we really want to tag as close to reality as possible, I would prefer something other than building=yes, unless that part of the building actually has occupiable space. Maybe a new tag like shelter=yes, roof=yes, or maybe building=shelter. Intended uses for this feature is when there is some kind of roof or shelter structure over something else, but it's still open-air underneath, and there isn't really anything on top but the roof itself. Intended rendering would be just like building=yes, but at 50% opacity, and drawn in order according to its layer. I suppose I really should draft a proposal for this. Wow, now I have the sudden urge to map the various parking levels individually in the garage at Port Columbus International Airport. -- David "Smith" a.k.a. Vid the Kid a.k.a. Bír'd'in Does this font make me look fat? _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
