toJson method

Object toJson()

Converts this object to something serializable in JSON.

Implementation

Object toJson() {
  final Map<String, Object> json = <String, Object>{};

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

  addIfPresent(
    'colors',
    colors.map((HeatmapGradientColor e) => e.color.toARGB32()).toList(),
  );
  addIfPresent(
    'startPoints',
    colors.map((HeatmapGradientColor e) => e.startPoint).toList(),
  );
  addIfPresent('colorMapSize', colorMapSize);

  return json;
}