Contents

# frozen_string_literal: true

module ActiveRecordMysqlSpatial
  class Geometry
    class << self
      def parse_bin(bin)
        parser.parse(bin[4..])
      end

      def from_coordinates(coordinates, type: :linestring)
        send("#{type}_from_coords", coordinates)
      end

      def from_text(value)
        cartesian_factory.parse_wkt(value)
      rescue StandardError
        nil
      end

      def valid_spatial?(value)
        point?(value) || linestring?(value) || multilinestring?(value)
      end

      def point?(value)
        /^point\(/i.match?(value)
      end

      def linestring?(value)
        /^linestring\(/i.match?(value)
      end

      def multilinestring?(value)
        /^multilinestring\(/i.match?(value)
      end

      private

      def point_from_coords(coordinate)
        x, y = coordinate

        cartesian_factory.point(x, y)
      end

      def linestring_from_coords(coordinates)
        points = coordinates.map do |x, y|
          cartesian_factory.point(x, y)
        end

        cartesian_factory.line_string(points)
      end

      def multilinestring_from_coords(coordinates)
        line_strings = coordinates.map do |coordinate|
          linestring_from_coords(coordinate)
        end

        cartesian_factory.multi_line_string(line_strings)
      end

      def parser
        @parser ||= RGeo::WKRep::WKBParser.new
      end

      def cartesian_factory
        @cartesian_factory ||= RGeo::Cartesian::Factory.new
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
active_record_mysql_spatial-0.2.0	lib/active_record_mysql_spatial/geometry.rb
active_record_mysql_spatial-0.1.0	lib/active_record_mysql_spatial/geometry.rb