ArcMapAddinDistanceAndDirection.ViewModels.LinesViewModel.CreatePolyline C# (CSharp) Метод

        private void CreatePolyline()
        {
            try
            {
                if (Point1 == null || Point2 == null)
                    return;

                var construct = new Polyline() as IConstructGeodetic;

                if (construct == null)
                    return;

                if (srf3 == null)
                {
                    // if you don't use the activator, you will get exceptions
                    Type srType = Type.GetTypeFromProgID("esriGeometry.SpatialReferenceEnvironment");
                    srf3 = Activator.CreateInstance(srType) as ISpatialReferenceFactory3;
                }

                var linearUnit = srf3.CreateUnit((int)esriSRUnitType.esriSRUnit_Meter) as ILinearUnit;

                construct.ConstructGeodeticLineFromPoints(GetEsriGeodeticType(), Point1, Point2, linearUnit, esriCurveDensifyMethod.esriCurveDensifyByDeviation, -1.0);

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

                UpdateDistance(construct as IGeometry);
                UpdateAzimuth(construct as IGeometry);

                //var color = new RgbColorClass() { Red = 255 } as IColor;
                AddGraphicToMap(construct as IGeometry);
                ResetPoints();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
        }