X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/4769eec5aab27cdb0ae6ac1b7bb713da720feb93..f67fae73cefc2fe604d3b53522a4418a9754078e:/lib/osm.rb?ds=inline diff --git a/lib/osm.rb b/lib/osm.rb index 6c3cf07c4..300d9fa7a 100644 --- a/lib/osm.rb +++ b/lib/osm.rb @@ -5,13 +5,14 @@ module OSM # # This would print every latitude value: # - # gpx = OSM:GPXImporter.new('somefile.gpx') + # gpx = OSM::GPXImporter.new('somefile.gpx') # gpx.points {|p| puts p['latitude']} require 'time' require 'rexml/parsers/sax2parser' require 'rexml/text' require 'xml/libxml' + require 'digest/md5' require 'RMagick' class Mercator @@ -22,10 +23,11 @@ module OSM @clat = lat @clon = lon @degrees_per_pixel = degrees_per_pixel + @degrees_per_pixel = 0.0000000001 if @degrees_per_pixel < 0.0000000001 @width = width @height = height - @dlon = width / 2 * degrees_per_pixel - @dlat = height / 2 * degrees_per_pixel * cos(@clat * PI / 180) + @dlon = width / 2 * @degrees_per_pixel + @dlat = height / 2 * @degrees_per_pixel * cos(@clat * PI / 180) @tx = xsheet(@clon - @dlon) @ty = ysheet(@clat - @dlat) @@ -68,22 +70,24 @@ module OSM attr_reader :tracksegs def initialize(filename) + @filename = filename + end + + def points @possible_points = 0 @actual_points = 0 @tracksegs = 0 - @points = [] - - file = File.new(filename) - parser = REXML::Parsers::SAX2Parser.new( file ) lat = -1 lon = -1 ele = -1 - date = Time.now(); + date = DateTime.now(); gotlatlon = false gotele = false gotdate = false + parser = REXML::Parsers::SAX2Parser.new(File.new(@filename)) + parser.listen( :start_element, %w{ trkpt }) do |uri,localname,qname,attributes| lat = attributes['lat'].to_f lon = attributes['lon'].to_f @@ -98,8 +102,11 @@ module OSM parser.listen( :characters, %w{ time } ) do |text| if text && text != '' - date = Time.parse(text) - gotdate = true + begin + date = DateTime.parse(text) + gotdate = true + rescue + end end end @@ -112,18 +119,15 @@ module OSM ele = '0' unless gotele if lat < 90 && lat > -90 && lon > -180 && lon < 180 @actual_points += 1 - @points.push(Hash['latitude' => lat,'longitude' => lon,'timestamp' => date,'altitude' => ele,'segment' => @tracksegs]) + yield Hash['latitude' => lat, 'longitude' => lon, 'timestamp' => date, 'altitude' => ele, 'segment' => @tracksegs] end end gotlatlon = false gotele = false gotdate = false end - parser.parse - end - def points - @points.each { |p| yield p } + parser.parse end def get_picture(min_lat, min_lon, max_lat, max_lon, num_points) @@ -197,7 +201,7 @@ module OSM end def get_icon(min_lat, min_lon, max_lat, max_lon) - puts "getting icon for bbox #{min_lat},#{min_lon} - #{max_lat},#{max_lon}" + #puts "getting icon for bbox #{min_lat},#{min_lon} - #{max_lat},#{max_lon}" width = 50 height = 50 rat= Math.cos( ((max_lat + min_lat)/2.0) / 180.0 * 3.141592) @@ -240,8 +244,36 @@ module OSM end + class GreatCircle + include Math + + # initialise with a base position + def initialize(lat, lon) + @lat = lat * PI / 180 + @lon = lon * PI / 180 + end + + # get the distance from the base position to a given position + def distance(lat, lon) + lat = lat * PI / 180 + lon = lon * PI / 180 + return 6372.795 * 2 * asin(sqrt(sin((lat - @lat) / 2) ** 2 + cos(@lat) * cos(lat) * sin((lon - @lon)/2) ** 2)) + end + + # get the worst case bounds for a given radius from the base position + def bounds(radius) + latradius = 2 * asin(sqrt(sin(radius / 6372.795 / 2) ** 2)) + lonradius = 2 * asin(sqrt(sin(radius / 6372.795 / 2) ** 2 / cos(@lat) ** 2)) + minlat = (@lat - latradius) * 180 / PI + maxlat = (@lat + latradius) * 180 / PI + minlon = (@lon - lonradius) * 180 / PI + maxlon = (@lon + lonradius) * 180 / PI + return { :minlat => minlat, :maxlat => maxlat, :minlon => minlon, :maxlon => maxlon } + end + end + class GeoRSS - def initialize(description='OpenStreetMap GPS Traces') + def initialize(feed_title='OpenStreetMap GPS Traces', feed_description='OpenStreetMap GPS Traces', feed_url='http://www.openstreetmap.org/traces/') @doc = XML::Document.new @doc.encoding = 'UTF-8' @@ -252,19 +284,19 @@ module OSM @channel = XML::Node.new 'channel' rss << @channel title = XML::Node.new 'title' - title << 'OpenStreetMap GPS Traces' + title << feed_title @channel << title description_el = XML::Node.new 'description' @channel << description_el - description_el << description + description_el << feed_description link = XML::Node.new 'link' - link << 'http://www.openstreetmap.org/traces/' + link << feed_url @channel << link image = XML::Node.new 'image' @channel << image url = XML::Node.new 'url' - url << 'http://www.openstreetmap.org/feeds/mag_map-rss2.0.png' + url << 'http://www.openstreetmap.org/images/mag_map-rss2.0.png' image << url title = XML::Node.new 'title' title << "OpenStreetMap" @@ -276,11 +308,11 @@ module OSM height << '100' image << height link = XML::Node.new 'link' - link << 'http://www.openstreetmap.org/traces/' + link << feed_url image << link end - def add(latitude=0, longitude=0, title_text='dummy title', url='http://www.example.com/', description_text='dummy description', timestamp=Time.now) + def add(latitude=0, longitude=0, title_text='dummy title', author_text='anonymous', url='http://www.example.com/', description_text='dummy description', timestamp=DateTime.now) item = XML::Node.new 'item' title = XML::Node.new 'title' @@ -290,21 +322,33 @@ module OSM link << url item << link + guid = XML::Node.new 'guid' + guid << url + item << guid + description = XML::Node.new 'description' description << description_text item << description + author = XML::Node.new 'author' + author << author_text + item << author + pubDate = XML::Node.new 'pubDate' - pubDate << timestamp.xmlschema + pubDate << timestamp.to_s(:rfc822) item << pubDate - lat_el = XML::Node.new 'geo:lat' - lat_el << latitude.to_s - item << lat_el + if latitude + lat_el = XML::Node.new 'geo:lat' + lat_el << latitude.to_s + item << lat_el + end - lon_el = XML::Node.new 'geo:lon' - lon_el << longitude.to_s - item << lon_el + if longitude + lon_el = XML::Node.new 'geo:long' + lon_el << longitude.to_s + item << lon_el + end @channel << item end @@ -325,4 +369,56 @@ module OSM return doc end end + + def self.IPLocation(ip_address) + Timeout::timeout(4) do + Net::HTTP.start('api.hostip.info') do |http| + country = http.get("/country.php?ip=#{ip_address}").body + country = "GB" if country = "UK" + Net::HTTP.start('ws.geonames.org') do |http| + xml = REXML::Document.new(http.get("/countryInfo?country=#{country}").body) + xml.elements.each("geonames/country") do |ele| + minlon = ele.get_text("bBoxWest").to_s + minlat = ele.get_text("bBoxSouth").to_s + maxlon = ele.get_text("bBoxEast").to_s + maxlat = ele.get_text("bBoxNorth").to_s + return { :minlon => minlon, :minlat => minlat, :maxlon => maxlon, :maxlat => maxlat } + end + end + end + end + + return nil + rescue Exception + return nil + end + + # Construct a random token of a given length + def self.make_token(length = 30) + chars = 'abcdefghijklmnopqrtuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789' + token = '' + + length.times do + token += chars[(rand * chars.length).to_i].chr + end + + return token + end + + # Return an encrypted version of a password + def self.encrypt_password(password, salt) + return Digest::MD5.hexdigest(password) if salt.nil? + return Digest::MD5.hexdigest(salt + password) + end + + # Return an SQL fragment to select a given area of the globe + def self.sql_for_area(minlat, minlon, maxlat, maxlon, prefix = nil) + tilesql = QuadTile.sql_for_area(minlat, minlon, maxlat, maxlon, prefix) + minlat = (minlat * 1000000).round + minlon = (minlon * 1000000).round + maxlat = (maxlat * 1000000).round + maxlon = (maxlon * 1000000).round + + return "#{tilesql} AND #{prefix}latitude BETWEEN #{minlat} AND #{maxlat} AND #{prefix}longitude BETWEEN #{minlon} AND #{maxlon}" + end end