Udo Giacomozzi wrote: > Is there a good reason why all map databases seem to be fixed on > straight lines and do not support some kind of bezier curves? After > all, streets most of the time have curves and only at junctions or in > other rare situations have corners. > > Using bezier curves would at the same time lead to more smooth lines > and reduce way points and are not really hard for renderers nor for > calculating intersections and similar. > > I realize that the OSM data will continue to use straight lines, but > I'm just wondering why curved data is deprecated.
I'm working on that one :) There are some 'issues' you need to keep in mind. And that is mainly the bbox/within situation. It is possible to define a curve that touches a bbox but is not in the bbox. Next to that I have another method to *significantly* reduce the amount of nodes and database transactions on existing data while new data is easy to add and semantically related to it. Hopefully this week I finish a renderer for it (xfig like). Stefan _______________________________________________ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
