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

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

            var point = obj as IPoint;

            if (point == null)
                return;

            //dynamic updates
            if (!HasPoint1)
            {
                Point1 = point;
            }
            else if (HasPoint1 && !HasPoint2)
            {
                // update major
                var polyline = CreateGeodeticLine(Point1, point);
                // get major distance from polyline
                MajorAxisDistance = GetGeodeticLengthFromPolyline(polyline);
                // update bearing
                Azimuth = GetAzimuth(polyline);
                // update feedback
                UpdateFeedbackWithEllipse(false);
            }
            else if (HasPoint1 && HasPoint2 && !HasPoint3)
            {
                var polyline = CreateGeodeticLine(Point1, point); 
                
                // get minor distance from polyline
                if (polyline != null)
                {
                    MinorAxisDistance = GetGeodeticLengthFromPolyline(polyline);
                }

                // update feedback              
                if (MajorAxisDistance > MinorAxisDistance)
                {
                    UpdateFeedbackWithEllipse();
                }
            }
        }