toJson method

@override Map<String, dynamic> toJson()

Implementation

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

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

  addIfPresent('heatmap-radius', heatmapRadius);
  addIfPresent('heatmap-weight', heatmapWeight);
  addIfPresent('heatmap-intensity', heatmapIntensity);
  addIfPresent('heatmap-color', heatmapColor);
  addIfPresent('heatmap-opacity', heatmapOpacity);
  addIfPresent('visibility', visibility);
  return json;
}