module QuadTile
begin
require "quad_tile/quad_tile_so"
- rescue MissingSourceFile
+ rescue LoadError
def self.tile_for_point(lat, lon)
x = ((lon.to_f + 180) * 65535 / 360).round
y = ((lat.to_f + 90) * 65535 / 180).round
- return tile_for_xy(x, y)
+ 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|
end
end
- return tiles
+ tiles
end
def self.tile_for_xy(x, y)
16.times do
t = t << 1
- t = t | 1 unless (x & 0x8000).zero?
+ t |= 1 unless (x & 0x8000).zero?
x <<= 1
t = t << 1
- t = t | 1 unless (y & 0x8000).zero?
+ t |= 1 unless (y & 0x8000).zero?
y <<= 1
end
- return t
+ t
end
- def self.iterate_tiles_for_area(minlat, minlon, maxlat, maxlon)
- tiles = tiles_for_area(minlat, minlon, maxlat, maxlon)
+ def self.iterate_tiles_for_area(bbox)
+ tiles = tiles_for_area(bbox)
first = last = nil
tiles.sort.each do |tile|
end
end
- def self.sql_for_area(minlat, minlon, maxlat, maxlon, prefix)
- sql = Array.new
- single = Array.new
+ def self.sql_for_area(bbox, prefix)
+ sql = []
+ single = []
- 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
end
end
- sql.push("#{prefix}tile IN (#{single.join(',')})") if single.size > 0
+ sql.push("#{prefix}tile IN (#{single.join(',')})") unless single.empty?
- return "( " + sql.join(" OR ") + " )"
+ "( " + sql.join(" OR ") + " )"
end
private_class_method :tile_for_xy, :iterate_tiles_for_area