BMFCoordinateSpan.fromMap constructor
- 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;
}