22bef89d1a
Remove the _no_quadtile versiond of the selection routines and switch to using the ordinary ones but with a (large) limit applied on the size of the area to prevent us spending ages working out the list of tiles to be selected.
58 lines
1.3 KiB
Ruby
58 lines
1.3 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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end
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end
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