Module: OvertureMaps::Util

Defined in:
lib/overture_maps/util.rb

Class Method Summary collapse

Class Method Details

.bbox_area_km2(bbox) ⇒ Object

Approximate area of a bounding box in km².



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# File 'lib/overture_maps/util.rb', line 20

def bbox_area_km2(bbox)
  lat_center = (bbox.min_lat + bbox.max_lat) / 2.0
  km_per_deg_lat = 111.0
  km_per_deg_lng = 111.0 * Math.cos(lat_center * Math::PI / 180.0)

  width_km = (bbox.max_lng - bbox.min_lng) * km_per_deg_lng
  height_km = (bbox.max_lat - bbox.min_lat) * km_per_deg_lat
  (width_km * height_km).abs.round(2)
end

.format_size(bytes) ⇒ Object 



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# File 'lib/overture_maps/util.rb', line 7

def format_size(bytes)
  if bytes >= 1_073_741_824
    "#{(bytes / 1_073_741_824.0).round(2)} GB"
  elsif bytes >= 1_048_576
    "#{(bytes / 1_048_576.0).round(2)} MB"
  elsif bytes >= 1024
    "#{(bytes / 1024.0).round(2)} KB"
  else
    "#{bytes} bytes"
  end
end