Module: ADIWG::Mdtranslator::Readers::Fgdc::MapProjection

Defined in:
lib/adiwg/mdtranslator/readers/fgdc/modules/module_mapProjection.rb

Class Method Summary collapse

Class Method Details

.unpack(xMapProjection, hResponseObj) ⇒ Object 



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# File 'lib/adiwg/mdtranslator/readers/fgdc/modules/module_mapProjection.rb', line 40

def self.unpack(xMapProjection, hResponseObj)

   # instance classes needed in script
   intMetadataClass = InternalMetadata.new
   hProjection = intMetadataClass.newProjection
   hIdentifier = intMetadataClass.newIdentifier
   hProjection[:projectionIdentifier] = hIdentifier

   # map projection 4.1.2.1.1 (mapprojn) - map projection name (required)
   # -> ReferenceSystemParameters.projection.projectionIdentifier.identifier
   name = xMapProjection.xpath('./mapprojn').text
   unless name.empty?
      hIdentifier[:name] = name
   end
   if name.empty?
      hResponseObj[:readerExecutionMessages] << 'WARNING: FGDC reader: map projection name is missing'
   end

   # map projection 4.1.2.1.2 (albers) - Albers Conical Equal Area
   xAlbers = xMapProjection.xpath('./albers')
   unless xAlbers.empty?
      hIdentifier[:identifier] = 'albers'
      hIdentifier[:name] = 'Albers Conical Equal Area' if name.empty?
      return AlbersProjection.unpack(xAlbers, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.3 (azimequi) - Azimuthal Equidistant
   xAzimequi = xMapProjection.xpath('./azimequi')
   unless xAzimequi.empty?
      hIdentifier[:identifier] = 'azimuthalEquidistant'
      hIdentifier[:name] = 'Azimuthal Equidistant' if name.empty?
      return AzimuthEquidistantProjection.unpack(xAzimequi, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.4 (equicon) - Equidistant Conic
   xEquiCon = xMapProjection.xpath('./equicon')
   unless xEquiCon.empty?
      hIdentifier[:identifier] = 'equidistantConic'
      hIdentifier[:name] = 'Equidistant Conic' if name.empty?
      return EquidistantConicProjection.unpack(xEquiCon, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.5 (equirect) - Equirectangular
   xEquirec = xMapProjection.xpath('./equirect')
   unless xEquirec.empty?
      hIdentifier[:identifier] = 'equirectangular'
      hIdentifier[:name] = 'Equirectangular' if name.empty?
      return EquirectangularProjection.unpack(xEquirec, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.6 (gvnsp) - General Vertical Near-sided Perspective
   xGenVert = xMapProjection.xpath('./gvnsp')
   unless xGenVert.empty?
      hIdentifier[:identifier] = 'generalVertical'
      hIdentifier[:name] = 'General Vertical Near-sided Perspective' if name.empty?
      return GeneralVerticalProjection.unpack(xGenVert, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.7 (gnomonic) - Gnomonic
   xGeomonic = xMapProjection.xpath('./gnomonic')
   unless xGeomonic.empty?
      hIdentifier[:identifier] = 'gnomonic'
      hIdentifier[:name] = 'Gnomonic' if name.empty?
      return GnomonicProjection.unpack(xGeomonic, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.8 (lamberta) - Lambert Azimuthal Equal Area
   xLambertA = xMapProjection.xpath('./lamberta')
   unless xLambertA.empty?
      hIdentifier[:identifier] = 'lambertEqualArea'
      hIdentifier[:name] = 'Lambert Azimuthal Equal Area' if name.empty?
      return LambertEqualAreaProjection.unpack(xLambertA, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.9 (lambertc) - Lambert Conformal Conic
   xLambertC = xMapProjection.xpath('./lambertc')
   unless xLambertC.empty?
      hIdentifier[:identifier] = 'lambertConic'
      hIdentifier[:name] = 'Lambert Conformal Conic' if name.empty?
      return LambertConicProjection.unpack(xLambertC, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.10 (mercator) - Mercator
   xMercator = xMapProjection.xpath('./mercator')
   unless xMercator.empty?
      hIdentifier[:identifier] = 'mercator'
      hIdentifier[:name] = 'Mercator' if name.empty?
      return MercatorProjection.unpack(xMercator, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.11 (modsak) - Modified Stereographic for Alaska
   xAlaska = xMapProjection.xpath('./modsak')
   unless xAlaska.empty?
      hIdentifier[:identifier] = 'alaska'
      hIdentifier[:name] = 'Modified Stereographic for Alaska' if name.empty?
      return ModifiedAlaskaProjection.unpack(xAlaska, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.12 (miller) - Miller Cylindrical
   xMiller = xMapProjection.xpath('./miller')
   unless xMiller.empty?
      hIdentifier[:identifier] = 'miller'
      hIdentifier[:name] = 'Miller Cylindrical' if name.empty?
      return MillerCylinderProjection.unpack(xMiller, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.13 (obqmerc) - Oblique Mercator
   xObliqueM = xMapProjection.xpath('./obqmerc')
   unless xObliqueM.empty?
      hIdentifier[:identifier] = 'obliqueMercator'
      hIdentifier[:name] = 'Oblique Mercator' if name.empty?
      return ObliqueMercatorProjection.unpack(xObliqueM, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.14 (orthogr) - Orthographic
   xOrtho = xMapProjection.xpath('./orthogr')
   unless xOrtho.empty?
      hIdentifier[:identifier] = 'orthographic'
      hIdentifier[:name] = 'Orthographic' if name.empty?
      return OrthographicProjection.unpack(xOrtho, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.15 (polarst) - Polar Stereographic
   xPolarStereo = xMapProjection.xpath('./polarst')
   unless xPolarStereo.empty?
      hIdentifier[:identifier] = 'polarStereo'
      hIdentifier[:name] = 'Polar Stereographic' if name.empty?
      return PolarStereoProjection.unpack(xPolarStereo, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.16 (polycon) - Polyconic
   xPolycon = xMapProjection.xpath('./polycon')
   unless xPolycon.empty?
      hIdentifier[:identifier] = 'polyconic'
      hIdentifier[:name] = 'Polyconic' if name.empty?
      return PolyconicProjection.unpack(xPolycon, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.17 (robinson) - Robinson
   xRobin = xMapProjection.xpath('./robinson')
   unless xRobin.empty?
      hIdentifier[:identifier] = 'robinson'
      hIdentifier[:name] = 'Robinson' if name.empty?
      return RobinsonProjection.unpack(xRobin, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.18 (sinusoid) - Sinusoidal
   xSinu = xMapProjection.xpath('./sinusoid')
   unless xSinu.empty?
      hIdentifier[:identifier] = 'sinusoidal'
      hIdentifier[:name] = 'Sinusoidal' if name.empty?
      return SinusoidalProjection.unpack(xSinu, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.19 (spaceobq) - Space Oblique Mercator (Landsat)
   xSpaceO = xMapProjection.xpath('./spaceobq')
   unless xSpaceO.empty?
      hIdentifier[:identifier] = 'spaceOblique'
      hIdentifier[:name] = 'Space Oblique Mercator (Landsat)' if name.empty?
      return SpaceObliqueProjection.unpack(xSpaceO, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.20 (stereo) - Stereographic
   xStereo = xMapProjection.xpath('./stereo')
   unless xStereo.empty?
      hIdentifier[:identifier] = 'stereographic'
      hIdentifier[:name] = 'Stereographic' if name.empty?
      return StereographicProjection.unpack(xStereo, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.21 (transmer) - Transverse Mercator
   xTransMer = xMapProjection.xpath('./transmer')
   unless xTransMer.empty?
      hIdentifier[:identifier] = 'transverseMercator'
      hIdentifier[:name] = 'Transverse Mercator' if name.empty?
      return TransverseMercatorProjection.unpack(xTransMer, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.22 (vdgrin) - van der Grinten
   xVanDerG = xMapProjection.xpath('./vdgrin')
   unless xVanDerG.empty?
      hIdentifier[:identifier] = 'grinten'
      hIdentifier[:name] = 'Van Der Grinten' if name.empty?
      return VanDerGrintenProjection.unpack(xVanDerG, hProjection, hResponseObj)
   end

   # map projection 4.1.2.1.23 (mapprojp) - projection parameter set
   xParamSet = xMapProjection.xpath('./mapprojp')
   unless xParamSet.empty?
      hIdentifier[:identifier] = 'parameters'
      hIdentifier[:name] = 'Projection Parameters' if name.empty?
      return ProjectionParameters.unpack(xParamSet, hProjection, hResponseObj)
   end

   return nil

end