Class: CacheableKdtree::LatitudeLongitudeTree

Inherits:
Object
  • Object
show all
Defined in:
lib/cacheable_kdtree/latitude_longitude_tree.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(node_list) ⇒ LatitudeLongitudeTree

Returns a new instance of LatitudeLongitudeTree.



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# File 'lib/cacheable_kdtree/latitude_longitude_tree.rb', line 4

def initialize(node_list)
  @root = create_tree(node_list)
  find_regions(@root)
end

Instance Attribute Details

#root ⇒ Object

Returns the value of attribute root.



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# File 'lib/cacheable_kdtree/latitude_longitude_tree.rb', line 2

def root
  @root
end

Instance Method Details

#closest(lat, long, distance, units = :miles) ⇒ Object 



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# File 'lib/cacheable_kdtree/latitude_longitude_tree.rb', line 9

def closest(lat, long, distance, units = :miles)
  fail 'Input must be numeric.' unless lat.is_a?(Numeric) && long.is_a?(Numeric) && distance.is_a?(Numeric)
  fail 'Units must be either :kilometers or :miles.' unless %i(miles kilometers).include?(units)
  bounding_box = if units == :miles
                   CacheableKdtree::Util.bounding_box_miles(lat, long, distance)
                 else
                   CacheableKdtree::Util.bounding_box_kilometers(lat, long, distance)
                 end
  nearest_nodes(bounding_box)
end