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

Returns a new instance of 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