BMFCoordinateSpan.fromMap constructor

BMFCoordinateSpan.fromMap(
  1. Map map
)

map => BMFCoordinateSpan

Implementation

BMFCoordinateSpan.fromMap(Map map)
    : assert(map != null,
'Construct a BMFCoordinateSpan,The parameter map cannot be null'),
      assert(map.containsKey('latitudeDelta'),
      'Construct a BMFCoordinateSpan,The parameter latitudeDelta cannot be null'),
      assert(map.containsKey('longitudeDelta'),
      'Construct a BMFCoordinateSpan,The parameter longitudeDelta cannot be null') {
  latitudeDelta = map['latitudeDelta '] as double;
  longitudeDelta = map['longitudeDelta'] as double;
}