Module: Adiwg_BoundingBox

Defined in:
lib/adiwg/mdtranslator/readers/adiwgJson/modules_0.9.0/module_boundingBox.rb

Overview

History: Stan Smith 2013-11-07 original script

Stan Smith 2014-04-28 reorganized for json schema 0.3.0

Class Method Summary collapse

Class Method Details

.unpack(aBBox) ⇒ Object 



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# File 'lib/adiwg/mdtranslator/readers/adiwgJson/modules_0.9.0/module_boundingBox.rb', line 10

def self.unpack(aBBox)

  # instance classes needed in script
  intMetadataClass = InternalMetadata.new
  intGeometry = intMetadataClass.newGeometry
  intGeometry[:geoType] = 'BoundingBox'

  # unpack GeoJSON bounding box elements
  intBBox = intMetadataClass.newBoundingBox
  west = aBBox[0]
  south = aBBox[1]
  east = aBBox[2]
  north = aBBox[3]

  # validate coordinates if easting +/-180 and northing +/-90
  valid = false
  if (180 >= west) && (west >= -180)
    if (90 >= south) && (south >= -90)
      if (180 >= east) && (east >= -180)
        if (90 >= north) &&(north >= -90)
          valid = true
        end
      end
    end
  end

  # build internal geo element if valid
  if valid
    intBBox[:westLong] = west
    intBBox[:eastLong] = east
    intBBox[:southLat] = south
    intBBox[:northLat] = north
    intGeometry[:geometry] = intBBox

    return intGeometry
  else
    return nil
  end

end