RectangleFeature.fromMap constructor

RectangleFeature.fromMap(Map<String, dynamic> map)

从Map创建RectangleFeature对象

Implementation

factory RectangleFeature.fromMap(Map<String, dynamic> map) {
  final topLeftMap = map['topLeft'] as Map<String, dynamic>;
  final topRightMap = map['topRight'] as Map<String, dynamic>;
  final bottomLeftMap = map['bottomLeft'] as Map<String, dynamic>;
  final bottomRightMap = map['bottomRight'] as Map<String, dynamic>;

  return RectangleFeature(
    topLeft: Point(
      (topLeftMap['x'] as num).toDouble(),
      (topLeftMap['y'] as num).toDouble(),
    ),
    topRight: Point(
      (topRightMap['x'] as num).toDouble(),
      (topRightMap['y'] as num).toDouble(),
    ),
    bottomLeft: Point(
      (bottomLeftMap['x'] as num).toDouble(),
      (bottomLeftMap['y'] as num).toDouble(),
    ),
    bottomRight: Point(
      (bottomRightMap['x'] as num).toDouble(),
      (bottomRightMap['y'] as num).toDouble(),
    ),
  );
}