toJson method

Map<String, dynamic> toJson()

Implementation

Map<String, dynamic> toJson() {
  List<double> x = [];
  List<double> y = [];
  for (var c in coordinates) {
    x.add(c.x);
    y.add(c.y);
  }
  return {
    'x': x,
    'y': y,
  };
}