   // MARK: - Star
   
   // See https://www.weheartswift.com/bezier-paths-gesture-recognizers/
-  private func maskStar(_ points: Int = 5) {
+  private func maskStar(_ points: Int) {
     // FIXME: Do not mask the shadow.
     
     // Stars must has at least 3 points.

  
  // MARK: - Parallelogram
  
  private func maskParallelogram(_ topLeftAngle: Double = 60) {
    let parallelogramPath = maskParallelogramBezierPath(topLeftAngle)
    drawPath(parallelogramPath)
  }

  // MARK: - Wave
  
  
  private func maskWave(_ waveDirection: MaskType.WaveDirection, waveWidth: Float , waveOffset: Float) {
    let wavePath = maskWaveBezierPath(waveDirection == .up, waveWidth: CGFloat(waveWidth), waveOffset: CGFloat(waveOffset))
    drawPath(wavePath)
  }
