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

        private double GetAzimuth(IGeometry geometry)
        {
            var curve = geometry as ICurve;

            if (curve == null)
                return 0.0;

            var line = new Line() as ILine;

            curve.QueryTangent(esriSegmentExtension.esriNoExtension, 0.5, true, 10, line);

            if (line == null)
                return 0.0;

            return GetAngleDegrees(line.Angle);
        }