mappy.osm — mappy 20180404

Tile calculation. See: https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames

lat-lon->tile cljs

(lat-lon->tile lat-lon zoom)

lat-lon->tile-pos cljs

(lat-lon->tile-pos [lat lon] zoom)

lat-range cljs

lon-range cljs

pi cljs

tile->lat-lon cljs

(tile->lat-lon [pixel-x pixel-y] zoom)

tile->px cljs

(tile->px tile)

tile-url cljs

(tile-url {:keys [x y z]})