geo_service.rb

# Geo/RGeo tools
class GeoService
  # @!method line(start_point, end_point) Create LineString from start to end points
  #   @param start_point [RGeo::Geographic::SphericalPointImpl]
  #   @param end_point [RGeo::Geographic::SphericalPointImpl]
  #   @return [RGeo::Cartesian::LineStringImpl]
  # @!method line_string(points) Create LineString from array of coordinates
  #   @param points [Array<RGeo::Geographic::SphericalPointImpl>]
  #   @return [RGeo::Geographic::SphericalLineStringImpl]
  delegate :line, :line_string, to: :spherical_factory

  # Create Point from lon, lat coordinates
  # @param lon [Float]
  # @param lat [Float]
  # @return [RGeo::Geographic::SphericalPointImpl]
  # rubocop: disable Rails/Delegate
  def point(lon:, lat:)
    spherical_factory.point(lon, lat)
  end
  # rubocop: enable Rails/Delegate

  private

  def spherical_factory
    @spherical_factory ||= geographic_adapter.spherical_factory(srid: 4326)
  end

  def geographic_adapter
    RGeo::Geographic
  end
end