MARKUS

    public class ArrowArcControl : CommentUserInfo, IDisposable, INotifyPropertyChanged, IDashControl

        public override void Copy(CommentUserInfo lhs)

        {

            if (lhs is ArrowArcControl ArrowArcCtrl)

            {

                this.StartPoint = new Point(ArrowArcCtrl.StartPoint.X, ArrowArcCtrl.StartPoint.Y);

                this.EndPoint = new Point(ArrowArcCtrl.EndPoint.X, ArrowArcCtrl.EndPoint.Y);

                this.DashSize = ArrowArcCtrl.DashSize;

                this.PointSet = ArrowArcCtrl.PointSet.ConvertAll(x => new Point(x.X, x.Y));

                this.isTransOn = ArrowArcCtrl.isTransOn;

                this.MiddlePoint = new Point(ArrowArcCtrl.MiddlePoint.X, ArrowArcCtrl.MiddlePoint.Y);

                this.StrokeColor = ArrowArcCtrl.StrokeColor;

                this.Opacity = ArrowArcCtrl.Opacity;

                this.Clock = ArrowArcCtrl.Clock;

                this.LineSize = ArrowArcCtrl.LineSize;

                this.UserID = ArrowArcCtrl.UserID;

                this.Memo = ArrowArcCtrl.Memo;

            }

        }

        public override CommentUserInfo Clone()

        {

            var clone = new ArrowArcControl();

            clone.Copy(this);

            return clone;

        }