Sha256: 733e133f8fb2634b790b0592909473225629ef6d9ef54841c6f0410fa863fd9b
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Size: 668 Bytes
Versions: 12
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Stored size: 668 Bytes
Contents
# Extend Array with a sort_by_distance method.
class Array
# This method creates a "distance" attribute on each object, calculates the
# distance from the passed origin, and finally sorts the array by the
# resulting distance.
def sort_by_distance_from(origin, opts={})
distance_attribute_name = opts.delete(:distance_attribute_name) || 'distance'
self.each do |e|
e.class.send(:attr_accessor, distance_attribute_name) if !e.respond_to?("#{distance_attribute_name}=")
e.send("#{distance_attribute_name}=", e.distance_to(origin,opts))
end
self.sort!{|a,b|a.send(distance_attribute_name) <=> b.send(distance_attribute_name)}
end
end
Version data entries
12 entries across 12 versions & 4 rubygems