52e5fa6ad7
Conflicts: app/views/browse/_map.html.erb app/views/site/index.html.erb config/initializers/mime_types.rb config/routes.rb lib/map_boundary.rb lib/migrate.rb lib/osm.rb vendor/assets/openlayers/OpenLayers.js
47 lines
1 KiB
Ruby
47 lines
1 KiB
Ruby
module GeoRecord
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# This scaling factor is used to convert between the float lat/lon that is
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# returned by the API, and the integer lat/lon equivalent that is stored in
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# the database.
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SCALE = 10000000
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def self.included(base)
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base.scope :bbox, lambda { |bbox| base.where(OSM.sql_for_area(bbox)) }
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base.before_save :update_tile
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end
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# Is this node within -90 >= latitude >= 90 and -180 >= longitude >= 180
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# * returns true/false
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def in_world?
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return false if self.lat < -90 or self.lat > 90
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return false if self.lon < -180 or self.lon > 180
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return true
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end
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def update_tile
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self.tile = QuadTile.tile_for_point(lat, lon)
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end
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def lat=(l)
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self.latitude = (l * SCALE).round
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end
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def lon=(l)
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self.longitude = (l * SCALE).round
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end
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# Return WGS84 latitude
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def lat
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return self.latitude.to_f / SCALE
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end
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# Return WGS84 longitude
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def lon
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return self.longitude.to_f / SCALE
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end
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private
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def lat2y(a)
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180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2))
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end
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end
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