RoundedPolygon.pillStar constructor

RoundedPolygon.pillStar({ double width = 2.0, double height = 1.0, int numVerticesPerRadius = 8, double innerRadiusRatio = 0.5, CornerRounding rounding = .unrounded, CornerRounding? innerRounding, List<CornerRounding>? perVertexRounding, double vertexSpacing = 0.5, double startLocation = 0.0, double centerX = 0.0, double centerY = 0.0, })

Implementation

factory RoundedPolygon.pillStar({
  double width = 2.0,
  double height = 1.0,
  int numVerticesPerRadius = 8,
  double innerRadiusRatio = 0.5,
  CornerRounding rounding = .unrounded,
  CornerRounding? innerRounding,
  List<CornerRounding>? perVertexRounding,
  double vertexSpacing = 0.5,
  double startLocation = 0.0,
  double centerX = 0.0,
  double centerY = 0.0,
}) {
  if (innerRadiusRatio <= 0.0 || innerRadiusRatio >= 1.0) {
    throw ArgumentError.value(
      innerRadiusRatio,
      "innerRadiusRatio",
      "innerRadiusRatio must be between 0 and 1 exclusive.",
    );
  }
  if (vertexSpacing < 0.0 || vertexSpacing > 1.0) {
    throw ArgumentError.value(
      vertexSpacing,
      "vertexSpacing",
      "vertexSpacing must be between 0 and 1.",
    );
  }
  if (startLocation < 0.0 || startLocation > 1.0) {
    throw ArgumentError.value(
      startLocation,
      "startLocation",
      "startLocation must be between 0 and 1.",
    );
  }
  if (width <= 0.0 || height <= 0.0) {
    throw ArgumentError("Pill shapes must have positive width and height.");
  }
  if (innerRadiusRatio <= 0.0 || innerRadiusRatio > 1.0) {
    throw ArgumentError.value(
      innerRadiusRatio,
      "innerRadiusRatio",
      "innerRadiusRatio must be between 0 and 1.",
    );
  }

  var pvRounding = perVertexRounding;

  // If no per-vertex rounding supplied and caller asked for inner rounding,
  // create per-vertex rounding list based on supplied outer/inner rounding parameters
  if (pvRounding == null && innerRounding != null) {
    // TODO: consider reverting back to the original flattening implementation
    pvRounding = .generate(
      numVerticesPerRadius * 2,
      (index) => index.isEven ? rounding : innerRounding,
    );
  }

  return .fromVertices(
    vertices: _pillStarVerticesFromNumVerts(
      numVerticesPerRadius,
      width,
      height,
      innerRadiusRatio,
      vertexSpacing,
      startLocation,
      centerX,
      centerY,
    ),
    rounding: rounding,
    perVertexRounding: pvRounding,
    centerX: centerX,
    centerY: centerY,
  );
}