module Polylines

Overview

Encode and decode Google Polylines. To use it:

Polylines.encode([{lat: 38.5, lng: -120.2}, {lat: 40.7, lng: -120.95}])
Polylines.encode([[38.5, -120.2], [40.7, -120.95]])
Polylines.encode([{38.5, -120.2}, {40.7, -120.95}])
# => "_p~iF~ps|U_ulLnnqC"

Polylines.decode("_p~iF~ps|U_ulLnnqC")
# => [{lat: 38.5, lng: -120.2}, {lat: 40.7, lng: -120.95}]

You can also set precision in both methods as the second positionnal argument It will correspond to the number of values after the comma.

Please do not set precision to more than 10...

Extended Modules

• Polylines

Defined in:

polylines.cr

Constant Summary

VERSION = "0.2.0"

Instance Method Summary

• #decode(polyline : String, precision : UInt8 = 5) : Array(Location)

  Decode a polyline string to an array of tuple {lat:, lng:}.

• #encode(points : Array(LooseLocation), precision : UInt8 = 5) : String

  Encode an array of tuple {lat:, lng:} to a polyline string.

Instance Method Detail