-
- before_filter :authorize
- after_filter :compress_output
-
- helper :user
- model :user
-
- #COUNT is the number of map requests to allow before exiting and starting a new process
- @@count = COUNT
-
- # The maximum area you're allowed to request, in square degrees
- MAX_REQUEST_AREA = 0.25
-
-
- # Number of GPS trace/trackpoints returned per-page
- TRACEPOINTS_PER_PAGE = 5000
-
- def trackpoints
- @@count+=1
- response.headers["Content-Type"] = 'text/xml'
- #retrieve the page number
- page = params['page'].to_i
- unless page
- page = 0;
- end
-
- unless page >= 0
- report_error("Page number must be greater than or equal to 0")
- return
- end
-
- offset = page * TRACEPOINTS_PER_PAGE
-
- # Figure out the bbox
- bbox = params['bbox']
- unless bbox and bbox.count(',') == 3
- report_error("The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat")
- return
- end
-
- bbox = bbox.split(',')
-
- min_lon = bbox[0].to_f
- min_lat = bbox[1].to_f
- max_lon = bbox[2].to_f
- max_lat = bbox[3].to_f
-
- # check the bbox is sane
- unless min_lon <= max_lon
- report_error("The minimum longitude must be less than the maximum longitude, but it wasn't")
- return
- end
- unless min_lat <= max_lat
- report_error("The minimum latitude must be less than the maximum latitude, but it wasn't")
- return
- end
- unless min_lon >= -180 && min_lat >= -90 && max_lon <= 180 && max_lat <= 90
- report_error("The latitudes must be between -90 and 90, and longitudes between -180 and 180")
- return
- end
-
- # check the bbox isn't too large
- requested_area = (max_lat-min_lat)*(max_lon-min_lon)
- if requested_area > MAX_REQUEST_AREA
- report_error("The maximum bbox size is " + MAX_REQUEST_AREA.to_s + ", and your request was too large. Either request a smaller area, or use planet.osm")
- return
- end
-
- # integerise
- min_lat = min_lat * 1000000
- max_lat = max_lat * 1000000
- min_lon = min_lon * 1000000
- max_lon = max_lon * 1000000
- # get all the points
- points = Tracepoint.find(:all, :conditions => ['gps_points.latitude > ? AND gps_points.longitude > ? AND gps_points.latitude < ? AND gps_points.longitude < ? AND ( public = 1 OR gpx_files.user_id = ? ) AND visible = 1', min_lat.to_i, min_lon.to_i, max_lat.to_i, max_lon.to_i, @user.id ], :select => "gps_points.*", :joins => "INNER JOIN gpx_files ON gpx_files.id = gpx_id", :offset => offset, :limit => TRACEPOINTS_PER_PAGE, :order => "timestamp DESC" )
-
- doc = XML::Document.new
- doc.encoding = 'UTF-8'
- root = XML::Node.new 'gpx'
- root['version'] = '1.0'
- root['creator'] = 'OpenStreetMap.org'
- root['xmlns'] = "http://www.topografix.com/GPX/1/0/"
-
- doc.root = root
-
- track = XML::Node.new 'trk'
- doc.root << track
-
- trkseg = XML::Node.new 'trkseg'
- track << trkseg
-
- points.each do |point|
- trkseg << point.to_xml_node()
- end
-
- #exit when we have too many requests
- if @@count > MAX_COUNT
- render :text => doc.to_s
- @@count = COUNT
- exit!
- end
-
- render :text => doc.to_s
-
- end
-
- def map
- GC.start
- @@count+=1
-
- response.headers["Content-Type"] = 'text/xml'
- # Figure out the bbox
- bbox = params['bbox']
- unless bbox and bbox.count(',') == 3
- report_error("The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat")
- return
- end
-
- bbox = bbox.split(',')
-
- min_lon = bbox[0].to_f
- min_lat = bbox[1].to_f
- max_lon = bbox[2].to_f
- max_lat = bbox[3].to_f
-
- # check the bbox is sane
- unless min_lon <= max_lon
- report_error("The minimum longitude must be less than the maximum longitude, but it wasn't")
- return
- end
- unless min_lat <= max_lat
- report_error("The minimum latitude must be less than the maximum latitude, but it wasn't")
- return
- end
- unless min_lon >= -180 && min_lat >= -90 && max_lon <= 180 && max_lat <= 90
- report_error("The latitudes must be between -90 and 90, and longitudes between -180 and 180")
- return
- end
-
- # check the bbox isn't too large
- requested_area = (max_lat-min_lat)*(max_lon-min_lon)
- if requested_area > MAX_REQUEST_AREA
- report_error("The maximum bbox size is " + MAX_REQUEST_AREA.to_s + ", and your request was too large. Either request a smaller area, or use planet.osm")
- return
- end
-
- # get all the nodes
- nodes = Node.find(:all, :conditions => ['latitude > ? AND longitude > ? AND latitude < ? AND longitude < ? AND visible = 1', min_lat, min_lon, max_lat, max_lon])
-
- node_ids = nodes.collect {|node| node.id }
-
- if node_ids.length > 50_000
- report_error("You requested too many nodes (limit is 50,000). Either request a smaller area, or use planet.osm")
- end
-
- if node_ids.length == 0
- render :text => '<osm></osm>'
- return
- end
-
- # grab the segments
- segments = Array.new
- if node_ids.length > 0
- node_ids_sql = "(#{node_ids.join(',')})"
- # get the referenced segments
- segments = Segment.find_by_sql "select * from current_segments where visible = 1 and (node_a in #{node_ids_sql} or node_b in #{node_ids_sql})"
- end
- # see if we have any missing nodes
- segments_nodes = segments.collect {|segment| segment.node_a }
- segments_nodes += segments.collect {|segment| segment.node_b }
-
- segments_nodes.uniq!
-
- missing_nodes = segments_nodes - node_ids
-
- # get missing nodes if there are any
- nodes += Node.find(missing_nodes) if missing_nodes.length > 0
-
- doc = OSM::API.new.get_xml_doc
-
- # get ways
- # find which ways are needed
- segment_ids = segments.collect {|segment| segment.id }
- ways = Array.new
- if segment_ids.length > 0
- way_segments = WaySegment.find_all_by_segment_id(segment_ids)
- way_ids = way_segments.collect {|way_segment| way_segment.id }
- ways = Way.find(way_ids) # NB: doesn't pick up segments, tags from db until accessed via way.way_segments etc.
-
- # seg_ids = way_segments.collect {|way_segment| way_segment.segment_id }
-
- list_of_way_segs = ways.collect {|way| way.way_segments}
- list_of_way_segs.flatten!
-
- list_of_way_segments = list_of_way_segs.collect { |way_seg| way_seg.segment_id }
-
- end
-
- # - [0] in case some thing links to segment 0 which doesn't exist. Shouldn't actually ever happen but it does. FIXME: file a ticket for this
- segments_to_fetch = (list_of_way_segments.uniq - segment_ids) - [0]
-
- if segments_to_fetch.length > 0
- segments += Segment.find(segments_to_fetch)
- end
-
- # get more nodes
- #
-
- segments_nodes = segments.collect {|segment| segment.node_a }
- segments_nodes += segments.collect {|segment| segment.node_b }
-
- node_ids_a = nodes.collect {|node| node.id }
-
- nodes_to_get = segments_nodes - node_ids_a
- nodes += Node.find(nodes_to_get) if nodes_to_get.length > 0
-
- visible_nodes = {}
- user_display_name_cache = {}
-
- nodes.each do |node|
- if node.visible?
- doc.root << node.to_xml_node(user_display_name_cache)
- visible_nodes[node.id] = node
- end
- end
-
- visible_segments = {}
-
- segments.each do |segment|
- if visible_nodes[segment.node_a] and visible_nodes[segment.node_b] and segment.visible?
- doc.root << segment.to_xml_node(user_display_name_cache)
- visible_segments[segment.id] = segment
- end
- end
-
- ways.each do |way|
- doc.root << way.to_xml_node(visible_segments, user_display_name_cache) if way.visible?
- end
-
- render :text => doc.to_s
-
- #exit when we have too many requests
- if @@count > MAX_COUNT
- @@count = COUNT
- exit!
- end
-
- end
projects / rails.git / blobdiff