X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/93dab8a1272f8c807da841c0a55b37f74b65b8c3..6d44c78407ea9a553be030f3f7c49b48d616878b:/lib/osm.rb?ds=inline diff --git a/lib/osm.rb b/lib/osm.rb index f9f77d1b5..aab3e1335 100644 --- a/lib/osm.rb +++ b/lib/osm.rb @@ -5,12 +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 @@ -21,10 +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) @@ -61,29 +64,30 @@ module OSM class GPXImporter + # FIXME swap REXML for libXML attr_reader :possible_points attr_reader :actual_points attr_reader :tracksegs def initialize(filename) @filename = filename - @possible_points = 0 - @actual_points = 0 - @tracksegs = 0 end def points - file = File.new(@filename) - parser = REXML::Parsers::SAX2Parser.new( file ) + @possible_points = 0 + @actual_points = 0 + @tracksegs = 0 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 @@ -112,17 +119,19 @@ module OSM ele = '0' unless gotele if lat < 90 && lat > -90 && lon > -180 && lon < 180 @actual_points += 1 - yield 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 get_picture(min_lat, min_lon, max_lat, max_lon, num_points) + #puts "getting picfor bbox #{min_lat},#{min_lon} - #{max_lat},#{max_lon}" frames = 10 width = 250 height = 250 @@ -155,13 +164,14 @@ module OSM images[n].stroke_width(1) images[n].stroke('#BBBBBB') images[n].fill('#BBBBBB') + # puts "A #{px},#{py} - #{oldpx},#{oldpy}" images[n].line(px, py, oldpx, oldpy ) unless first end images[mm].stroke_width(3) images[mm].stroke('#000000') images[mm].fill('#000000') images[mm].line(px, py, oldpx, oldpy ) unless first - + # puts "B #{px},#{py} - #{oldpx},#{oldpy}" m +=1 if m > num_points.to_f / frames.to_f * (mm+1) mm += 1 @@ -191,6 +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}" width = 50 height = 50 rat= Math.cos( ((max_lat + min_lat)/2.0) / 180.0 * 3.141592) @@ -214,6 +225,7 @@ module OSM px = proj.x(p['longitude']) py = proj.y(p['latitude']) gc.line(px, py, oldpx, oldpy ) unless first + # puts "C #{px},#{py} - #{oldpx},#{oldpy}" first = false oldpy = py oldpx = px @@ -231,4 +243,171 @@ module OSM end 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(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' + + rss = XML::Node.new 'rss' + @doc.root = rss + rss['version'] = "2.0" + rss['xmlns:geo'] = "http://www.w3.org/2003/01/geo/wgs84_pos#" + @channel = XML::Node.new 'channel' + rss << @channel + title = XML::Node.new 'title' + title << feed_title + @channel << title + description_el = XML::Node.new 'description' + @channel << description_el + + description_el << feed_description + link = XML::Node.new 'link' + link << feed_url + @channel << link + image = XML::Node.new 'image' + @channel << image + url = XML::Node.new 'url' + url << 'http://www.openstreetmap.org/images/mag_map-rss2.0.png' + image << url + title = XML::Node.new 'title' + title << "OpenStreetMap" + image << title + width = XML::Node.new 'width' + width << '100' + image << width + height = XML::Node.new 'height' + height << '100' + image << height + link = XML::Node.new 'link' + link << feed_url + image << link + end + + 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' + item << title + title << title_text + link = XML::Node.new 'link' + 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.to_s(:rfc822) + item << pubDate + + if latitude + lat_el = XML::Node.new 'geo:lat' + lat_el << latitude.to_s + item << lat_el + end + + if longitude + lon_el = XML::Node.new 'geo:long' + lon_el << longitude.to_s + item << lon_el + end + + @channel << item + end + + def to_s + return @doc.to_s + end + end + + class API + def get_xml_doc + doc = XML::Document.new + doc.encoding = 'UTF-8' + root = XML::Node.new 'osm' + root['version'] = API_VERSION + root['generator'] = 'OpenStreetMap server' + doc.root = root + 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 end