Class: GeoRuby::SimpleFeatures::MultiPolygon

Inherits:
GeometryCollection show all
Defined in:
lib/geo_ruby/simple_features/multi_polygon.rb

Overview

Represents a group of polygons (see Polygon).

Instance Attribute Summary

Attributes inherited from GeometryCollection

#geometries

Attributes inherited from Geometry

#srid, #with_m, #with_z

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from GeometryCollection

#==, #binary_representation, #bounding_box, from_geometries, #georss_gml_representation, #georss_simple_representation, #georss_w3cgeo_representation, #kml_representation, #m_range, #method_missing

Methods inherited from Geometry

#as_ewkb, #as_ewkt, #as_georss, #as_hex_ewkb, #as_hex_wkb, #as_kml, #as_wkb, #as_wkt, #bounding_box, #envelope, from_ewkb, from_ewkt, from_geojson, from_georss, from_georss_with_tags, from_hex_ewkb, from_kml, #m_range, #to_json

Constructor Details

#initialize(srid = DEFAULT_SRID, _with_z = false, _with_m = false) ⇒ MultiPolygon

Returns a new instance of MultiPolygon.



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# File 'lib/geo_ruby/simple_features/multi_polygon.rb', line 7

def initialize(srid = DEFAULT_SRID, _with_z = false, _with_m = false)
  super(srid)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class GeoRuby::SimpleFeatures::GeometryCollection

Class Method Details

.from_coordinates(point_sequence_sequences, srid = DEFAULT_SRID, with_z = false, with_m = false) ⇒ Object

Creates a multi polygon from sequences of points : ((((x,y)…(x,y)),((x,y)…(x,y)),((x,y)…(x,y)))



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# File 'lib/geo_ruby/simple_features/multi_polygon.rb', line 48

def self.from_coordinates(point_sequence_sequences, srid = DEFAULT_SRID, with_z = false, with_m = false)
  multi_polygon = new(srid, with_z, with_m)
  multi_polygon.concat(point_sequence_sequences.collect { |point_sequences| Polygon.from_coordinates(point_sequences, srid, with_z, with_m) })
  multi_polygon
end

.from_polygons(polygons, srid = DEFAULT_SRID, with_z = false, with_m = false) ⇒ Object

Creates a multi polygon from an array of polygons



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# File 'lib/geo_ruby/simple_features/multi_polygon.rb', line 41

def self.from_polygons(polygons, srid = DEFAULT_SRID, with_z = false, with_m = false)
  multi_polygon = new(srid, with_z, with_m)
  multi_polygon.concat(polygons)
  multi_polygon
end

Instance Method Details

#as_json(_options = {}) ⇒ Object 



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# File 'lib/geo_ruby/simple_features/multi_polygon.rb', line 35

def as_json(_options = {})
  { type: 'MultiPolygon',
    coordinates: to_coordinates }
end

#binary_geometry_type ⇒ Object

:nodoc:



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# File 'lib/geo_ruby/simple_features/multi_polygon.rb', line 11

def binary_geometry_type #:nodoc:
  6
end

#points ⇒ Object 



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# File 'lib/geo_ruby/simple_features/multi_polygon.rb', line 15

def points
  @points ||= geometries.reduce([]) do |arr, r|
    arr.concat(r.rings.map(&:points).flatten)
  end
end

#text_geometry_type ⇒ Object

WKT geometry type



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# File 'lib/geo_ruby/simple_features/multi_polygon.rb', line 27

def text_geometry_type #:nodoc:
  'MULTIPOLYGON'
end

#text_representation(allow_z = true, allow_m = true) ⇒ Object

Text representation of a MultiPolygon



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# File 'lib/geo_ruby/simple_features/multi_polygon.rb', line 22

def text_representation(allow_z = true, allow_m = true) #:nodoc:
  @geometries.map { |polygon| '(' + polygon.text_representation(allow_z, allow_m) + ')' }.join(',')
end

#to_coordinates ⇒ Object 



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# File 'lib/geo_ruby/simple_features/multi_polygon.rb', line 31

def to_coordinates
  geometries.map(&:to_coordinates)
end