toMap method

@override Map<String, dynamic> toMap()

转换成可以序列化的map

Implementation

@override
Map<String, dynamic> toMap() {
  final Map<String, dynamic> json = <String, dynamic>{};

  void addIfPresent(String fieldName, dynamic value) {
    if (value != null) {
      json[fieldName] = value;
    }
  }

  addIfPresent('id', id);
  json['points'] = _pointsToJson();
  addIfPresent('strokeWidth', strokeWidth);
  addIfPresent('strokeColor', strokeColor.value);
  addIfPresent('fillColor', fillColor.value);
  addIfPresent('visible', visible);
  addIfPresent('joinType', joinType.index);
  return json;
}