Module: Charta::Coordinates

Defined in:
lib/charta/coordinates.rb

Class Method Summary collapse

Class Method Details

.flatten(hash) ⇒ Object

Force coordinates to 2D



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# File 'lib/charta/coordinates.rb', line 6

def flatten(hash)
  map_coordinates(hash) { |position| position[0..1] }
end

.map_coordinates(hash, &block) ⇒ Object 



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# File 'lib/charta/coordinates.rb', line 10

def map_coordinates(hash, &block)
  case hash['type']
  when 'FeatureCollection'
    map_feature_collection_coordinates hash, &block
  when 'Feature'
    map_feature_coordinates hash, &block
  else
    map_geometry_coordinates hash, &block
  end
end

.normalize_4326_geometry(json) ⇒ Object 



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# File 'lib/charta/coordinates.rb', line 21

def normalize_4326_geometry(json)
  map_coordinates json do |(x, y)|
    [((x + 180.to_d) % 360.to_d) - 180.to_d, ((y + 90.to_d) % 180.to_d) - 90.to_d]
  end
end