X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/b7276be79b61b94c57dfc30d4421157e49a3f7c0..696aa8b5a86609a567979d80465eed537f4ad948:/lib/geo_record.rb?ds=sidebyside diff --git a/lib/geo_record.rb b/lib/geo_record.rb index 025bbe4a8..2740eab0c 100644 --- a/lib/geo_record.rb +++ b/lib/geo_record.rb @@ -1,4 +1,9 @@ module GeoRecord + # This scaling factor is used to convert between the float lat/lon that is + # returned by the API, and the integer lat/lon equivalent that is stored in + # the database. + SCALE = 10000000 + def self.included(base) base.extend(ClassMethods) end @@ -20,32 +25,23 @@ module GeoRecord end def lat=(l) - self.latitude = (l * 10000000).round + self.latitude = (l * SCALE).round end def lon=(l) - self.longitude = (l * 10000000).round + self.longitude = (l * SCALE).round end # Return WGS84 latitude def lat - return self.latitude.to_f / 10000000 + return self.latitude.to_f / SCALE end # Return WGS84 longitude def lon - return self.longitude.to_f / 10000000 - end - - # Potlatch projections - def lon_potlatch(baselong,masterscale) - (self.lon-baselong)*masterscale + return self.longitude.to_f / SCALE end - def lat_potlatch(basey,masterscale) - -(lat2y(self.lat)-basey)*masterscale - end - private def lat2y(a)