Graphics.SetClip Method (GraphicsPath) и Graphics.Clear Method vs Graphics.FillPath Method (System.Drawing)

        public Form1()
        {
            InitializeComponent();
 
            this.BackColor = Color.Black;
            this.Paint += Draw;
        }
 
        private void Draw(object sender, PaintEventArgs e)
        {
            GraphicsPath path = new GraphicsPath();
 
            path.AddEllipse(20, 20, 50, 50);
            path.Widen(new Pen(Color.Transparent, 22));
 
            e.Graphics.SetClip(path);
            e.Graphics.Clear(Color.White);
            e.Graphics.ResetClip();
 
            e.Graphics.FillPath((Brushes.Red), path);
        }

e.Graphics.DrawPath(new Pen(Color.FromArgb(255, 255, 255, 255)), path);

e.Graphics.DrawPath(new Pen(Color.FromArgb(254, 255, 255, 255)), path);

e.Graphics.FillPath(Brushes.White, path);

e.Graphics.SetClip(path);
e.Graphics.Clear(Color.White);