[OSM-dev] How is the tile-index implemented/used?
tom at compton.nu
Thu May 14 14:01:06 BST 2009
Daniel Gilbert wrote:
> I guess the Lat/Lon conversion you described above allows me to
> determine all the nodes which are in a special area and then create a
> tile from it. I checked out the svn and came across the quad_tiles.h.
> Seems to me as if it contains the functions I would need to do the
> conversion, doesn't it?
Those are the functions for the tiling the API does, yes.
> My goal is an easy-to-use Windows application, which requires no
> additional knowledge. Simply download the country you want, import it by
> clicking a button and be happy. Then you can search for streets, towns
> or POI in general. Might maybe help to spread the word of OSM into the
If you're trying to display planar maps then you will need to project
them to the plane and you may want to do tiling post-projection, much as
the slippy map tiles do, rather than on the original WGS84 lat/lon
values like the API does.
Tom Hughes (tom at compton.nu)
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