X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/33a65a90c9d0e2ab121e1da9c3efedaf9e6a9789..491da055847c0b0184016606c93a65eeae38ce80:/lib/quad_tile.rb?ds=inline diff --git a/lib/quad_tile.rb b/lib/quad_tile.rb index cb1b5a06e..258fb9fd5 100644 --- a/lib/quad_tile.rb +++ b/lib/quad_tile.rb @@ -3,17 +3,17 @@ module QuadTile require "quad_tile/quad_tile_so" rescue MissingSourceFile def self.tile_for_point(lat, lon) - x = ((lon + 180) * 65535 / 360).round - y = ((lat + 90) * 65535 / 180).round + x = ((lon.to_f + 180) * 65535 / 360).round + y = ((lat.to_f + 90) * 65535 / 180).round return tile_for_xy(x, y) end - def self.tiles_for_area(minlat, minlon, maxlat, maxlon) - minx = ((minlon + 180) * 65535 / 360).round - maxx = ((maxlon + 180) * 65535 / 360).round - miny = ((minlat + 90) * 65535 / 180).round - maxy = ((maxlat + 90) * 65535 / 180).round + def self.tiles_for_area(bbox) + minx = ((bbox.min_lon + 180) * 65535 / 360).round + maxx = ((bbox.max_lon + 180) * 65535 / 360).round + miny = ((bbox.min_lat + 90) * 65535 / 180).round + maxy = ((bbox.max_lat + 90) * 65535 / 180).round tiles = [] minx.upto(maxx) do |x| @@ -39,43 +39,43 @@ module QuadTile return t end + + def self.iterate_tiles_for_area(bbox) + tiles = tiles_for_area(bbox) + first = last = nil + + tiles.sort.each do |tile| + if last.nil? + first = last = tile + elsif tile == last + 1 + last = tile + else + yield first, last + + first = last = tile + end + end + + yield first, last unless last.nil? + end end - def self.sql_for_area(minlat, minlon, maxlat, maxlon) + def self.sql_for_area(bbox, prefix) sql = Array.new single = Array.new - iterate_tiles_for_area(minlat, minlon, maxlat, maxlon) do |first,last| + iterate_tiles_for_area(bbox) do |first,last| if first == last single.push(first) else - sql.push("tile BETWEEN #{first} AND #{last}") + sql.push("#{prefix}tile BETWEEN #{first} AND #{last}") end end - sql.push("tile IN (#{single.join(',')})") if single.size > 0 + sql.push("#{prefix}tile IN (#{single.join(',')})") if single.size > 0 return "( " + sql.join(" OR ") + " )" end - def self.iterate_tiles_for_area(minlat, minlon, maxlat, maxlon) - tiles = tiles_for_area(minlat, minlon, maxlat, maxlon) - first = last = nil - - tiles.sort.each do |tile| - if last.nil? - first = last = tile - elsif tile == last + 1 - last = tile - else - yield first, last - - first = last = tile - end - end - - yield first, last unless last.nil? - end - private_class_method :tile_for_xy, :iterate_tiles_for_area end