Class: MultiGeometry

Inherits:
Object
  • Object
show all
Defined in:
lib/adiwg/mdtranslator/writers/iso19115_2/classes/class_multiGeometry.rb

Instance Method Summary collapse

Constructor Details

#initialize(xml) ⇒ MultiGeometry 



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# File 'lib/adiwg/mdtranslator/writers/iso19115_2/classes/class_multiGeometry.rb', line 17

def initialize(xml)
	@xml = xml
end

Instance Method Details

#writeXML(hGeoElement) ⇒ Object 



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# File 'lib/adiwg/mdtranslator/writers/iso19115_2/classes/class_multiGeometry.rb', line 21

def writeXML(hGeoElement)

	# classes used
	intMetadataClass = InternalMetadata.new
	pointClass = Point.new(@xml)
	lineClass = LineString.new(@xml)
	polygonClass = Polygon.new(@xml)


	# gml:MultiGeometry attributes
	attributes = {}

	# gml:MultiGeometry attributes - gml:id - required
	mGeoID = hGeoElement[:elementId]
	if mGeoID.nil?
		$idCount = $idCount.succ
		mGeoID = 'multiGeo' + $idCount
	end
	attributes['gml:id'] = mGeoID

	# gml:MultiGeometry attributes - srsDimension
	s = hGeoElement[:elementGeometry][:dimension]
	if !s.nil?
		attributes[:srsDimension] = s
	end

	# gml:MultiGeometry attributes - srsName
	s = hGeoElement[:elementSrs][:srsName]
	if !s.nil?
		attributes[:srsName] = s
	end

	@xml.tag!('gml:MultiGeometry',attributes) do

		# multi geometry - description
		s = hGeoElement[:elementDescription]
		if !s.nil?
			@xml.tag!('gml:description',s)
		elsif $showAllTags
			@xml.tag!('gml:description')
		end

		# multi geometry - name
		s = hGeoElement[:elementName]
		if !s.nil?
			@xml.tag!('gml:name',s)
		elsif $showAllTags
			@xml.tag!('gml:name')
		end

		# GeoJSON multi-objects need to be broken into independent
		# ... geometry members for ISO representation
		geoType = hGeoElement[:elementGeometry][:geoType]
		case geoType
			when 'MultiPoint'
				aPoints = hGeoElement[:elementGeometry][:geometry]
				if !aPoints.empty?
					@xml.tag!('gml:geometryMembers') do
						aPoints.each do |aCoords|
							intPoint = intMetadataClass.newGeoElement
							intPoint[:elementSrs] = hGeoElement[:elementSrs]
							intPoint[:elementGeometry] = Adiwg_Point.unpack(aCoords,'Point')
							pointClass.writeXML(intPoint)
						end
					end
				end
			when 'MultiLineString'
				aLines = hGeoElement[:elementGeometry][:geometry]
				if !aLines.empty?
					@xml.tag!('gml:geometryMembers') do
						aLines.each do |aCoords|
							intLine = intMetadataClass.newGeoElement
							intLine[:elementSrs] = hGeoElement[:elementSrs]
							intLine[:elementGeometry] = Adiwg_LineString.unpack(aCoords,'LineString')
							lineClass.writeXML(intLine)
						end
					end
				end
			when 'MultiPolygon'
				aPolygons = hGeoElement[:elementGeometry][:geometry]
				if !aPolygons.empty?
					@xml.tag!('gml:geometryMembers') do
						aPolygons.each do |aCoords|
							intPolygon = intMetadataClass.newGeoElement
							intPolygon[:elementSrs] = hGeoElement[:elementSrs]
							intPolygon[:elementGeometry] = Adiwg_LineString.unpack(aCoords,'Polygon')
							polygonClass.writeXML(intPolygon)
						end
					end
				end
		end

		# multi geometry - geometry members
		# GeoJSON GeometryCollection
		# GeoJSON FeatureCollection
		case geoType
			when 'MultiGeometry'
				aGeometry = hGeoElement[:elementGeometry][:geometry]
				if !aGeometry.empty?
					@xml.tag!('gml:geometryMembers') do
						aGeometry.each do |hGeometry|
							hGeoType = hGeometry[:elementGeometry][:geoType]
							case hGeoType
								when 'Point'
									pointClass.writeXML(hGeometry)
								when 'LineString'
									lineClass.writeXML(hGeometry)
								when 'Polygon'
									polygonClass.writeXML(hGeometry)
							end
						end
					end
				end
		end

	end

end