X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/3fb931f9a86955faa39bec1fa4f2a731cbc74780..8db05481193bfb105c76cda40ea0617b5f10545e:/lib/bounding_box.rb diff --git a/lib/bounding_box.rb b/lib/bounding_box.rb index 38b994d26..11e831cfe 100644 --- a/lib/bounding_box.rb +++ b/lib/bounding_box.rb @@ -1,13 +1,11 @@ class BoundingBox attr_reader :min_lon, :min_lat, :max_lon, :max_lat -private LON_LIMIT = 180.0 LAT_LIMIT = 90.0 - SCALED_LON_LIMIT = LON_LIMIT * GeoRecord::SCALE - SCALED_LAT_LIMIT = LAT_LIMIT * GeoRecord::SCALE + SCALED_LON_LIMIT = LON_LIMIT * GeoRecord::SCALE + SCALED_LAT_LIMIT = LAT_LIMIT * GeoRecord::SCALE -public def initialize(min_lon, min_lat, max_lon, max_lat) @min_lon = min_lon.to_f unless min_lon.nil? @min_lat = min_lat.to_f unless min_lat.nil? @@ -16,29 +14,25 @@ public end def self.from_s(s) - if s.count(',') == 3 - BoundingBox.new(*s.split(/,/)) - else - nil - end + BoundingBox.new(*s.split(/,/)) if s.count(",") == 3 end def self.from_bbox_params(params) - if params[:bbox] and params[:bbox].count(',') == 3 - bbox_array = params[:bbox].split(',') + if params[:bbox] && params[:bbox].count(",") == 3 + bbox_array = params[:bbox].split(",") end from_bbox_array(bbox_array) end def self.from_lon_lat_params(params) - if params[:minlon] and params[:minlat] and params[:maxlon] and params[:maxlat] + if params[:minlon] && params[:minlat] && params[:maxlon] && params[:maxlat] bbox_array = [params[:minlon], params[:minlat], params[:maxlon], params[:maxlat]] end from_bbox_array(bbox_array) end def self.from_lrbt_params(params) - if params[:l] and params[:b] and params[:t] and params[:t] + if params[:l] && params[:b] && params[:t] && params[:t] bbox_array = [params[:l], params[:b], params[:r], params[:t]] end from_bbox_array(bbox_array) @@ -49,14 +43,22 @@ public # only try to expand the bbox if there is a value for every coordinate # which there will be from the previous line as long as array does not contain a nil if bbox.complete? - @min_lon = [-SCALED_LON_LIMIT, - bbox.min_lon + margin * (min_lon - max_lon)].max if bbox.min_lon < min_lon - @min_lat = [-SCALED_LAT_LIMIT, - bbox.min_lat + margin * (min_lat - max_lat)].max if bbox.min_lat < min_lat - @max_lon = [+SCALED_LON_LIMIT, - bbox.max_lon + margin * (max_lon - min_lon)].min if bbox.max_lon > max_lon - @max_lat = [+SCALED_LAT_LIMIT, - bbox.max_lat + margin * (max_lat - min_lat)].min if bbox.max_lat > max_lat + if bbox.min_lon < min_lon + @min_lon = [-SCALED_LON_LIMIT, + bbox.min_lon + margin * (min_lon - max_lon)].max + end + if bbox.min_lat < min_lat + @min_lat = [-SCALED_LAT_LIMIT, + bbox.min_lat + margin * (min_lat - max_lat)].max + end + if bbox.max_lon > max_lon + @max_lon = [+SCALED_LON_LIMIT, + bbox.max_lon + margin * (max_lon - min_lon)].min + end + if bbox.max_lat > max_lat + @max_lat = [+SCALED_LAT_LIMIT, + bbox.max_lat + margin * (max_lat - min_lat)].min + end end self end @@ -65,11 +67,13 @@ public # check the bbox is sane if min_lon > max_lon raise OSM::APIBadBoundingBox.new( - "The minimum longitude must be less than the maximum longitude, but it wasn't") + "The minimum longitude must be less than the maximum longitude, but it wasn't" + ) end if min_lat > max_lat raise OSM::APIBadBoundingBox.new( - "The minimum latitude must be less than the maximum latitude, but it wasn't") + "The minimum latitude must be less than the maximum latitude, but it wasn't" + ) end if min_lon < -LON_LIMIT || min_lat < -LAT_LIMIT || max_lon > +LON_LIMIT || max_lat > +LAT_LIMIT raise OSM::APIBadBoundingBox.new("The latitudes must be between #{-LAT_LIMIT} and #{LAT_LIMIT}," + @@ -98,7 +102,7 @@ public end def complete? - not to_a.include?(nil) + !to_a.include?(nil) end def centre_lon @@ -118,7 +122,7 @@ public end def slippy_width(zoom) - width * 256.0 * 2.0 ** zoom / 360.0 + width * 256.0 * 2.0**zoom / 360.0 end def slippy_height(zoom) @@ -127,7 +131,7 @@ public Math.log((Math.tan(max) + 1.0 / Math.cos(max)) / (Math.tan(min) + 1.0 / Math.cos(min))) * - (128.0 * 2.0 ** zoom / Math::PI) + (128.0 * 2.0**zoom / Math::PI) end # there are two forms used for bounds with and without an underscore, @@ -162,19 +166,23 @@ public "#{min_lon},#{min_lat},#{max_lon},#{max_lat}" end - private - def self.from_bbox_array(bbox_array) - unless bbox_array - raise OSM::APIBadUserInput.new( - "The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat") + class << self + private + + def from_bbox_array(bbox_array) + unless bbox_array + raise OSM::APIBadUserInput.new( + "The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat" + ) + end + # Take an array of length 4, create a bounding box with min_lon, min_lat, max_lon and + # max_lat within their respective boundaries. + min_lon = [[bbox_array[0].to_f, -LON_LIMIT].max, +LON_LIMIT].min + min_lat = [[bbox_array[1].to_f, -LAT_LIMIT].max, +LAT_LIMIT].min + max_lon = [[bbox_array[2].to_f, +LON_LIMIT].min, -LON_LIMIT].max + max_lat = [[bbox_array[3].to_f, +LAT_LIMIT].min, -LAT_LIMIT].max + BoundingBox.new(min_lon, min_lat, max_lon, max_lat) end - # Take an array of length 4, create a bounding box with min_lon, min_lat, max_lon and - # max_lat within their respective boundaries. - min_lon = [[bbox_array[0].to_f, -LON_LIMIT].max, +LON_LIMIT].min - min_lat = [[bbox_array[1].to_f, -LAT_LIMIT].max, +LAT_LIMIT].min - max_lon = [[bbox_array[2].to_f, +LON_LIMIT].min, -LON_LIMIT].max - max_lat = [[bbox_array[3].to_f, +LAT_LIMIT].min, -LAT_LIMIT].max - BoundingBox.new(min_lon, min_lat, max_lon, max_lat) end def update!(bbox)