toJson method
Implementation
Map<String, dynamic> toJson() {
return {
'id': id,
'points': points.map((e) => e.toJson()).toList(),
'holes': holes.map((e) => e.map((e) => e.toJson()).toList()).toList(),
'fillColor': fillColor?.toHex(),
'strokeColor': strokeColor?.toHex(),
'alpha': alpha,
};
}