Class: Rack::Ketai::Position

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/ketai/position.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = { }) ⇒ Position

Position.new(:lat => 135.69322222222, :lng => 35.009888888889) Position.new(:lat => [35, 0,35.6], :lng => [135, 41, 35.6]) Position.new(:lat => “35.00.35.600”, :lng => “135.41.35.600”)



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# File 'lib/rack/ketai/position.rb', line 39

def initialize(options = { })
  @lat = options[:lat].kind_of?(Numeric) ? options[:lat] : self.class.dms2d(options[:lat])
  @lng = options[:lng].kind_of?(Numeric) ? options[:lng] : self.class.dms2d(options[:lng])
end

Class Method Details

.d2dms(d) ⇒ Object

度表記を度分秒に変換



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# File 'lib/rack/ketai/position.rb', line 25

def d2dms(d)
  di = d.to_i
  dd = (d.to_f - di)
  dm = (dd * 60)
  ds = (dd * 60 - dm.to_i) * 60
  dsd = (dd * 60 * 60 - dm.to_i * 60 - ds.to_i) * 60
  
  [di, dm.to_i, "#{ds.to_i}.#{dsd.to_i}".to_f]
end

.dms2d(dms) ⇒ Object

Position.dms2d([35, 00, 35.6]) Position.dms2d(“+35.00.35.600”)



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# File 'lib/rack/ketai/position.rb', line 10

def dms2d(dms)
  if dms.is_a?(String)
    if dms =~ /^(\+|\-)?(\d+)\.(\d+)\.(\d+\.\d+)$/
      dms = ["#{$1}#{$2}".to_i, $3.to_i, $4.to_f]
    else
      raise ArgumentError, "Invalid dms format."
    end
  end
  
  di, dm, ds = dms
  
  return di.to_i + dm.to_f/60 + ds.to_f/3600
end

Instance Method Details

#lat(datum = :wgs84) ⇒ Object 



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# File 'lib/rack/ketai/position.rb', line 44

def lat(datum = :wgs84)
  latlng(datum)[0]
end

#latlng(datum = :wgs84) ⇒ Object 



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# File 'lib/rack/ketai/position.rb', line 52

def latlng(datum = :wgs84)
  case datum.to_sym
  when :tokyo97
    DatumConv.jgd2tky(@lat,@lng)
  when :wgs84
    [@lat, @lng]
  else
    [nil, nil]
  end
end

#lng(datum = :wgs84) ⇒ Object 



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# File 'lib/rack/ketai/position.rb', line 48

def lng(datum = :wgs84)
  latlng(datum)[1]
end