2008/12/8 Thomas Wood <[EMAIL PROTECTED]>: > 2008/12/7 Andreas Titz <[EMAIL PROTECTED]>: >> Maarten Deen wrote: >>> Thomas Wood wrote: >>>>The maxResolution option on the Map object is currently not doing >>>>anything at a guess, this is what is causing the vectors to disappear >>>>at >z13 >>> >>> I've found out that the length of the vectors is affecting at which >>> zoomlevels >>> they disappear. The longer they are, the sooner they disappear. So it must >>> be >>> some kind of bug. >> >> It seems to be a clipping problem. If you zoom to the end of such a >> line, it will be visible even at zoom 18: >> <http://www.maasluip.nl/ebt/test.html?lat=50.99996&lon=9.99998&zoom=18&layers=B0T> >> >> I guess, if you zoom to the center of the line, the endpoints are too >> far away. In that case OL assumes, that the line won't clip the actually >> shown map. >> >> HTH, Andreas > > Thanks for that example, I've passed it onto somebody who knows better > than me about the rendering internals. >
Apparently this is a known issue: (17:54:18) crschmidt: Yeah, that's a side effect of very large geometries and too small of a resolution (17:54:30) crschmidt: specifically, geometries which are larger than the cairo rendering space are the problem here, I think (17:54:43) crschmidt: but I'd suggest that the issue be minimized slightly more and brought to the OL mailing list (17:55:33) crschmidt: there was a bunch of work in this regard in 2.7 that i can't even pretend to understand I'd recommend making up a simplified test case and taking it to the OpenLayers list. ([EMAIL PROTECTED] or [EMAIL PROTECTED]) -- Regards, Thomas Wood (Edgemaster) _______________________________________________ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
