(Now with added reply-all) On Thu, Oct 16, 2008 at 3:18 AM, Andy Allan <[EMAIL PROTECTED]> wrote: > 'Better' is dependent on what you're trying to achieve, but there are > certainly many 'different' representations in use in different > projects.
I want to represent the data such that a user can pan and zoom a map around smoothly (25+ fps) without pre-rendering tile images. Especially on devices like the iphone, that would be really nice. The only data structure I can think of to do something like this would be a quad tree with internal nodes containing data at particular detail levels. (So that for a fixed size view you never have to inspect more than a fixed number of quad tree nodes). Basically, it would look the same as the current tile set; but prerendered tile images would be replaced with node&way lists listing the data the corresponding tile shows. Has anyone written a program like this; either with that sort of data format or solving that problem? -J > Cheers, > Andy > _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
