Module: SmoWgs84ToBng::Validator

Defined in:
lib/smo_wgs84_to_bng/validator.rb

Constant Summary collapse

LAT_MIN = 
49.0
LAT_MAX = 
61.0
LON_MIN = 
-8.5
LON_MAX = 
2.0
E_MIN = 
0.0
E_MAX = 
700_000.0
N_MIN = 
0.0
N_MAX = 
1_300_000.0

Class Method Summary collapse

Class Method Details

.numeric?(val) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/smo_wgs84_to_bng/validator.rb', line 66

def numeric?(val)
  val.is_a?(Numeric)
end

.validate_bng!(id:, easting:, northing:, index: nil) ⇒ Object

Raises:



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# File 'lib/smo_wgs84_to_bng/validator.rb', line 40

def validate_bng!(id:, easting:, northing:, index: nil)
  ctx = index ? " for point at index #{index}" : ""

  raise MissingIdError, "id is required#{ctx}" if id.nil?

  raise MissingCoordinateError, "easting is required#{ctx}" if easting.nil?
  raise MissingCoordinateError, "northing is required#{ctx}" if northing.nil?

  unless numeric?(easting)
    raise InvalidCoordinateError, "easting must be numeric#{ctx}"
  end
  unless numeric?(northing)
    raise InvalidCoordinateError, "northing must be numeric#{ctx}"
  end

  e_f = easting.to_f
  n_f = northing.to_f

  unless e_f.between?(E_MIN, E_MAX)
    raise OutOfBoundsError, "easting #{e_f} is outside GB bounds (#{E_MIN}..#{E_MAX})#{ctx}"
  end
  unless n_f.between?(N_MIN, N_MAX)
    raise OutOfBoundsError, "northing #{n_f} is outside GB bounds (#{N_MIN}..#{N_MAX})#{ctx}"
  end
end

.validate_wgs84!(id:, lat:, lon:, index: nil) ⇒ Object

Raises:



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# File 'lib/smo_wgs84_to_bng/validator.rb', line 14

def validate_wgs84!(id:, lat:, lon:, index: nil)
  ctx = index ? " for point at index #{index}" : ""

  raise MissingIdError, "id is required#{ctx}" if id.nil?

  raise MissingCoordinateError, "lat is required#{ctx}" if lat.nil?
  raise MissingCoordinateError, "lon is required#{ctx}" if lon.nil?

  unless numeric?(lat)
    raise InvalidCoordinateError, "lat must be numeric#{ctx}"
  end
  unless numeric?(lon)
    raise InvalidCoordinateError, "lon must be numeric#{ctx}"
  end

  lat_f = lat.to_f
  lon_f = lon.to_f

  unless lat_f.between?(LAT_MIN, LAT_MAX)
    raise OutOfBoundsError, "lat #{lat_f} is outside GB bounds (#{LAT_MIN}..#{LAT_MAX})#{ctx}"
  end
  unless lon_f.between?(LON_MIN, LON_MAX)
    raise OutOfBoundsError, "lon #{lon_f} is outside GB bounds (#{LON_MIN}..#{LON_MAX})#{ctx}"
  end
end