59a6ed0e20
The volumn of bugs seem small enough to get away with normal or GiST indexes (not included yet) Also includes some other fixes
64 lines
1.5 KiB
Ruby
64 lines
1.5 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.extend(ClassMethods)
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end
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def before_save
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self.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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module ClassMethods
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def find_by_area(minlat, minlon, maxlat, maxlon, options)
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self.with_scope(:find => {:conditions => OSM.sql_for_area(minlat, minlon, maxlat, maxlon)}) do
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return self.find(:all, options)
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end
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end
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def find_by_area_no_quadtile(minlat, minlon, maxlat, maxlon, options)
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self.with_scope(:find => {:conditions => OSM.sql_for_area_no_quadtile(minlat, minlon, maxlat, maxlon)}) do
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return self.find(:all, options)
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end
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end
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end
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end
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