RoundedPolygon.fromFeatures constructor

RoundedPolygon.fromFeatures(List<Feature> features, { double centerX = double.nan, double centerY = double.nan, })

Implementation

factory RoundedPolygon.fromFeatures(
  List<Feature> features, {
  double centerX = double.nan,
  double centerY = double.nan,
}) {
  if (features.length < 2) {
    throw ArgumentError('Polygons must have at least 2 features.');
  }

  if (centerX.isNaN || centerY.isNaN) {
    final vertices = <double>[];

    for (final feature in features) {
      for (final cubic in feature.cubics) {
        vertices
          ..add(cubic.anchor0X)
          ..add(cubic.anchor0Y);
      }
    }

    final center = calculateCenter(vertices);

    final cX = centerX.isNaN ? center.x : centerX;
    final cY = centerY.isNaN ? center.y : centerY;

    return RoundedPolygon._(features, Point(cX, cY));
  }

  return RoundedPolygon._(features, Point(centerX, centerY));
}