Module: ADIWG::Mdtranslator::Readers::Fgdc::ObliqueMercatorProjection

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

Class Method Summary collapse

Class Method Details

.unpack(xParams, hProjection, hResponseObj) ⇒ Object 



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# File 'lib/adiwg/mdtranslator/readers/fgdc/modules/mapProjections/projection_obliqueMercator.rb', line 19

def self.unpack(xParams, hProjection, hResponseObj)

   # map projection 4.1.2.1.13 (obqmerc) - Oblique Mercator
   unless xParams.empty?
      paramCount = 0

      # -> ReferenceSystemParameters.projection.scaleFactorAtCenterLine
      paramCount += ProjectionCommon.unpackSFCenter(xParams, hProjection)

      # -> oblique line azimuth ( azimuthAngle && azimuthMeasurePointLongitude )
      # -> ReferenceSystemParameters.projection.azimuthAngle
      # -> ReferenceSystemParameters.projection.azimuthMeasurePointLongitude
      paramCount += ProjectionCommon.unpackObliqueLA(xParams, hProjection)

      # -> oblique line point 2( obliqueLinePoint{} )
      paramCount += ProjectionCommon.unpackObliqueLP(xParams, hProjection)

      # -> ReferenceSystemParameters.projection.latitudeOfProjectionOrigin
      paramCount += ProjectionCommon.unpackLatPO(xParams, hProjection)

      # -> ReferenceSystemParameters.projection.falseEasting
      # -> ReferenceSystemParameters.projection.falseNorthing
      paramCount += ProjectionCommon.unpackFalseNE(xParams, hProjection)

      # verify parameter count
      if paramCount == 6
         return hProjection
      else
         hResponseObj[:readerExecutionMessages] <<
            'WARNING: FGDC reader: Oblique Mercator projection is missing one or more parameters'
      end
   end

   return nil

end