ArcMapAddinDistanceAndDirection.ViewModels.TabBaseViewModel.OnNewMapPointEvent C# (CSharp) Method

        internal virtual 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)
            {
                // clear temp graphics
                ClearTempGraphics();
                Point1 = point;
                HasPoint1 = true;
                Point1Formatted = string.Empty;

                var color = new RgbColorClass() { Green = 255 } as IColor;
                AddGraphicToMap(Point1, color, true);

                // lets try feedback
                CreateFeedback(point, av);
                feedback.Start(point);
            }
            else if (!HasPoint2)
            {
                ResetFeedback();
                Point2 = point;
                HasPoint2 = true;
                point2Formatted = string.Empty;
                RaisePropertyChanged(() => Point2Formatted);
            }

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