ArcMapAddinDistanceAndDirection.ViewModels.EllipseViewModel.OnNewMapPointEvent C# (CSharp) Метод

        internal override void OnNewMapPointEvent(object obj)
        {
            if (!IsActiveTab)
                return;

            var mxdoc = ArcMap.Application.Document as IMxDocument;
            var av = mxdoc.FocusMap as IActiveView;
            var point = obj as IPoint;

            if (point == null)
                return;

            if (!HasPoint1)
            {
                Point1 = point;
                HasPoint1 = true;
                Point1Formatted = string.Empty;
                AddGraphicToMap(Point1, new RgbColor() { Green = 255 } as IColor, true);

            }
            else if (!HasPoint2)
            {
                Point2 = point;
                HasPoint2 = true;
                if (feedback != null)
                {
                    feedback.Stop();
                    feedback.Start(Point1);
                }
            }
            else if (!HasPoint3)
            {
                if (MajorAxisDistance >= MinorAxisDistance)
                {
                    ResetFeedback();
                    Point3 = point;
                    HasPoint3 = true;
                }
            }

            if (HasPoint1 && HasPoint2 && HasPoint3)
            {
                CreateMapElement();
                ResetPoints();
            }
        }