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

        private IPolyline CreateGeodeticLine(IPoint fromPoint, IPoint toPoint, double distance = 0.0)
        {
            var construct = new Polyline() as IConstructGeodetic;
            if (construct == null)
            {
                return null;
            }
            try
            {
                if (distance == 0)
                {
                    construct.ConstructGeodeticLineFromPoints(GetEsriGeodeticType(), fromPoint, toPoint, GetLinearUnit(), esriCurveDensifyMethod.esriCurveDensifyByDeviation, -1.0);
                }
                else
                {
                    var minorPolyline = new Polyline() as IPolyline;
                    minorPolyline.SpatialReference = Point1.SpatialReference;
                    minorPolyline.FromPoint = Point1;
                    minorPolyline.ToPoint = Point3;
                    construct.ConstructGeodeticLineFromDistance(GetEsriGeodeticType(), fromPoint, GetLinearUnit(), distance, GetAzimuth(minorPolyline as IGeometry),
                        esriCurveDensifyMethod.esriCurveDensifyByDeviation, -1.0);
                }
            }
            catch { }

            return construct as IPolyline;
        }