ArcMapAddinDistanceAndDirection.ViewModels.TabBaseViewModel.AddGraphicToMap C# (CSharp) Метод

        internal void AddGraphicToMap(IGeometry geom, IColor color, bool IsTempGraphic = false, esriSimpleMarkerStyle markerStyle = esriSimpleMarkerStyle.esriSMSCircle, esriRasterOpCode rasterOpCode = esriRasterOpCode.esriROPNOP)
        {
            if (geom == null || ArcMap.Document == null || ArcMap.Document.FocusMap == null)
                return;
            IElement element = null;
            double width = 2.0;

            geom.Project(ArcMap.Document.FocusMap.SpatialReference);

            if(geom.GeometryType == esriGeometryType.esriGeometryPoint)
            {
                // Marker symbols
                var simpleMarkerSymbol = new SimpleMarkerSymbol() as ISimpleMarkerSymbol;
                simpleMarkerSymbol.Color = color;
                simpleMarkerSymbol.Outline = true;
                simpleMarkerSymbol.OutlineColor = color;
                simpleMarkerSymbol.Size = 5;
                simpleMarkerSymbol.Style = markerStyle;

                var markerElement = new MarkerElement() as IMarkerElement;
                markerElement.Symbol = simpleMarkerSymbol;
                element = markerElement as IElement;
            }
            else if(geom.GeometryType == esriGeometryType.esriGeometryPolyline)
            {
                // create graphic then add to map
                var lineSymbol = new SimpleLineSymbolClass();
                lineSymbol.Color = color;
                lineSymbol.Width = width;
                if (IsTempGraphic && rasterOpCode != esriRasterOpCode.esriROPNOP)
                {
                    lineSymbol.Width = 1;
                    lineSymbol.ROP2 = rasterOpCode;
                }

                var le = new LineElementClass() as ILineElement;  
                element = le as IElement;
                le.Symbol = lineSymbol;
            }

            if (element == null)
                return;

            IClone clone = geom as IClone;
            element.Geometry = clone as IGeometry;       

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

            // store guid
            var eprop = element as IElementProperties;
            eprop.Name = Guid.NewGuid().ToString();
 
            if (this is LinesViewModel)
                GraphicsList.Add(new Graphic(GraphicTypes.Line, eprop.Name, geom, IsTempGraphic));
            else if (this is CircleViewModel)
                GraphicsList.Add(new Graphic(GraphicTypes.Circle, eprop.Name, geom, IsTempGraphic));
            else if (this is EllipseViewModel)
                GraphicsList.Add(new Graphic(GraphicTypes.Ellipse, eprop.Name, geom, IsTempGraphic));
            else if (this is RangeViewModel)
                GraphicsList.Add(new Graphic(GraphicTypes.RangeRing, eprop.Name, geom, IsTempGraphic));

            gc.AddElement(element, 0);

            //refresh map
            av.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);

            if (!IsTempGraphic)
                RaisePropertyChanged(() => HasMapGraphics);
        }
        /// <summary>