+++ /dev/null
-class GeoRecord < ActiveRecord::Base
- before_save :update_tile
-
- # Is this node within -90 >= latitude >= 90 and -180 >= longitude >= 180
- # * returns true/false
- def in_world?
- return false if self.lat < -90 or self.lat > 90
- return false if self.lon < -180 or self.lon > 180
- return true
- end
-
- def self.find_by_area(minlat, minlon, maxlat, maxlon, options)
- self.with_scope(:find => {:conditions => OSM.sql_for_area(minlat, minlon, maxlat, maxlon)}) do
- return self.find(:all, options)
- end
- end
-
- def update_tile
- self.tile = QuadTile.tile_for_point(lat, lon)
- end
-
- def lat=(l)
- self.latitude = (l * 10000000).round
- end
-
- def lon=(l)
- self.longitude = (l * 10000000).round
- end
-
- # Return WGS84 latitude
- def lat
- return self.latitude.to_f / 10000000
- end
-
- # Return WGS84 longitude
- def lon
- return self.longitude.to_f / 10000000
- end
-
- # Potlatch projections
- def lon_potlatch(baselong,masterscale)
- (self.lon-baselong)*masterscale
- end
-
- def lat_potlatch(basey,masterscale)
- -(lat2y(self.lat)-basey)*masterscale
- end
-
- private
-
- def lat2y(a)
- 180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2))
- end
-
-end
-