Class: ADIWG::Mdtranslator::Writers::Fgdc::SpatialReference

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

Instance Method Summary collapse

Constructor Details

#initialize(xml, hResponseObj) ⇒ SpatialReference 



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# File 'lib/adiwg/mdtranslator/writers/fgdc/classes/class_spatialReference.rb', line 22

def initialize(xml, hResponseObj)
   @xml = xml
   @hResponseObj = hResponseObj
end

Instance Method Details

#writeXML(hResourceInfo) ⇒ Object 



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# File 'lib/adiwg/mdtranslator/writers/fgdc/classes/class_spatialReference.rb', line 27

def writeXML(hResourceInfo)

   aRepTypes = hResourceInfo[:spatialRepresentationTypes]
   aResolutions = hResourceInfo[:spatialResolutions]
   aSpaceRefs = hResourceInfo[:spatialReferenceSystems]

   # classes used
   geoResClass = GeographicResolution.new(@xml, @hResponseObj)
   planarClass = PlanarReference.new(@xml, @hResponseObj)
   localClass = LocalSystem.new(@xml, @hResponseObj)
   geodeticClass = GeodeticReference.new(@xml, @hResponseObj)
   vDatumClass = VerticalDatum.new(@xml, @hResponseObj)

   outContext = 'spatial reference'

   # spatial reference 4.1 (horizsys) - horizontal coordinate reference system (required)
   # oneOf [geograph | planar | local]
   @xml.tag!('horizsys') do

      # horizontal reference 4.1.1 (geograph) - geographic resolution
      # <- resourceInfo.spatialResolution[].geographicResolution (first)
      aResolutions.each do |hSpaceRes|
         unless hSpaceRes.empty?
            if hSpaceRes[:geographicResolution]
               unless hSpaceRes[:geographicResolution].empty?
                  @xml.tag!('geograph') do
                     geoResClass.writeXML(hSpaceRes[:geographicResolution], outContext)
                  end
                  break
               end
            end
         end
      end

      # horizontal reference 4.1.2 (planar) - planar coordinate system []
      # <- spatialReferencesTypes[]
      # <- spatialReferences[].systemParameterSet.projection
      # <- spatialResolution[].coordinateResolution
      # <- spatialResolution[].bearingDistanceResolution
      havePlanar = false
      havePlanar = true unless aRepTypes.empty?
      aSpaceRefs.each do |hSpaceRef|
         unless hSpaceRef[:systemParameterSet].empty?
            unless hSpaceRef[:systemParameterSet][:projection].empty?
               hProjection = hSpaceRef[:systemParameterSet][:projection]
               unless hProjection[:projectionIdentifier][:identifier] == 'localSystem'
                  havePlanar = true
               end
            end
         end
      end
      aResolutions.each do |hResolution|
         havePlanar = true if hResolution[:coordinateResolution]
         havePlanar = true if hResolution[:bearingDistanceResolution]
      end
      if havePlanar
         @xml.tag!('planar') do
            planarClass.writeXML(aSpaceRefs, aRepTypes, aResolutions, outContext)
         end
      end

      # horizontal reference 4.1.3 (local) - any rectangular coordinate system not aligned with surface of earth
      # <- spatialReferences[].systemParameterSet.projection
      # localSYSTEM is not the same as localPLANAR in fgdc
      # however the same projection parameters are used in mdJson to save info
      # local system sets projection = 'localSystem'
      # local planar sets projection = 'localPlanar'
      aSpaceRefs.each do |hSpaceRef|
         unless hSpaceRef[:systemParameterSet].empty?
            if hSpaceRef[:systemParameterSet][:projection]
               hProjection = hSpaceRef[:systemParameterSet][:projection]
               unless hProjection.empty?
                  if hProjection[:projectionIdentifier][:identifier] == 'localSystem'
                     @xml.tag!('local') do
                        localClass.writeXML(hProjection, outContext)
                     end
                  end
               end
            end
         end
      end

      # horizontal reference 4.1.4 (geodetic) - parameters for shape of earth
      # <- spatialReferences[].systemParameterSet.geodetic
      aSpaceRefs.each do |hSpaceRef|
         unless hSpaceRef[:systemParameterSet].empty?
            if hSpaceRef[:systemParameterSet][:geodetic]
               hGeodetic = hSpaceRef[:systemParameterSet][:geodetic]
               unless hGeodetic.empty?
                  @xml.tag!('geodetic') do
                     geodeticClass.writeXML(hGeodetic, outContext)
                  end
               end
            end
         end
      end

   end

   # vertical reference 4.2 (vertdef) - vertical coordinate reference system
   # <- spatialReferences[].systemParameterSet.verticalDatum
   # pass in the full spatial reference array,
   # ... all vertical datum must be under same 'vertdef' tag
   haveVertical = false
   aSpaceRefs.each do |hSpaceRef|
      unless hSpaceRef[:systemParameterSet].empty?
         unless hSpaceRef[:systemParameterSet][:verticalDatum].empty?
            haveVertical = true
         end
      end
   end
   if haveVertical
      @xml.tag!('vertdef') do
         vDatumClass.writeXML(aSpaceRefs, outContext)
      end
   end

end