Hi, I don't think there is a website that provides rotated tiles.
You can however rotate tiles yourself at high speed. If you GDI has a "transformBlt" or "rotateblt" operation, use that. Otherwise read up on 2D transforms and strength reduction and implement your own function in assembly language. I have implemented 2D transforms without antialiasing that ran at 320x200x25fps on an 66MHz 486. Regards, Nic 2009/6/12 jiatao83 <[email protected]> > Thanks for your prompt reply. If the direction of driving is north, we may > possible not rotate the map. But if not, we may rotate the map. And the > probability of Driving north is very very small, so in most cases We need to > rotate the map! Anyone could help me? Any suggestion is highly appreciated! > thanks in advance. > Regards. > > tao > > > 在2009-06-13，"Marcus Wolschon" <[email protected]> 写道： > >-----BEGIN PGP SIGNED MESSAGE----- > >Hash: SHA1 > > > >jiatao83 schrieb: > >> > >> Hi, all, I am looking for some free APIs or library to mashup a > >> mobile navigation application, and I will use the OSM tile as the > >> base map. I am just using the free libaray j2memap, But it did not > >> provide such a API that could rotate the map so that the driver > >> direction is always the north direction! By the way, I have found > >> that the VGPS software provide the similar function, But it is not > >> free. I have also tried to rotate the map tile, but this method not > >> only distorts the map image,but also upside down the road name > >> information when you rotate the map image by 180 degree. Could > >> anyone help me? Or if there is other solution to make the driver > >> direction always the north direction? sad I have been stucked by > >> this problem for several weeks. So any Suggestion is welcomed. > >> Please help me! Thanks!smile Regards. > >> > > > >If the direction of driving is north....the you are driving north. > >Pretty useless application ;) > > > > > > > >Marcus > >-----BEGIN PGP SIGNATURE----- > >Version: GnuPG v1.4.9 (GNU/Linux) > >Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > > > >iEYEARECAAYFAkoyfrMACgkQf1hPnk3Z0cQXdgCeI0RdLvgW5zvS0U4Rs4b8cfa7 > >Y2MAnA5KepfgHEUzTcJ6O0Ktz7UVL3Bi > >=pby6 > >-----END PGP SIGNATURE----- > > > > > > > > ------------------------------ > 网易企业邮，商务邮箱专家 <http://qiye.163.com/?ft=3> > _______________________________________________ > Routing mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/routing > >
_______________________________________________ Routing mailing list [email protected] http://lists.openstreetmap.org/listinfo/routing
