public double[] getPlineCoords()
        {
            //works but needs honing//


            Autodesk.AutoCAD.Interop.AcadSelectionSets sSets = cadApp.ActiveDocument.SelectionSets;
            Autodesk.AutoCAD.Interop.AcadSelectionSet  sSet  = null;
            try
            {
                sSet = sSets.Add("set1");
            }

            catch
            {
                int set1Index = 0;
                for (int i = 0; i < sSets.Count; ++i)
                {
                    if (sSets.Item(i).Name == "set1")
                    {
                        set1Index = i;
                    }
                }

                sSet = sSets.Item(set1Index);
                sSet.Clear();
            }



            cadApp.Visible = true;
            sSet.SelectOnScreen();
            Autodesk.AutoCAD.Interop.Common.AcadLWPolyline pline = null;
            for (int i = 0; i < sSet.Count; ++i)
            {
                //Console.WriteLine


                Autodesk.AutoCAD.Interop.Common.AcadEntity obj = sSet.Item(i) as Autodesk.AutoCAD.Interop.Common.AcadEntity;


                try
                {
                    pline = cadApp.ActiveDocument.HandleToObject(obj.Handle);

                    double[] test = pline.Coordinates as double[];
                    Console.WriteLine("Coord 3 " + test[3]);
                    Console.WriteLine("The buldge 0 is " + pline.GetBulge(0));
                    Console.WriteLine("The buldge 1 is " + pline.GetBulge(1));
                    Console.WriteLine("The buldge  2 is " + pline.GetBulge(2));
                    Console.WriteLine("The buldge  3 is " + pline.GetBulge(3));
                }

                catch
                {
                    Console.WriteLine("entity type error");
                }
            }
            return(pline.Coordinates);
        }
        public List <VTex> getPlineEnityCoords()
        {
            List <VTex> returnVertices = new List <VTex>();

            Object out1 = new object();
            object out2 = new object();

            try
            {
                cadApp.ActiveDocument.Utility.GetEntity(out out1, out out2, "Select polyline:");

                if (out1 == null)
                {
                    MessageBox.Show("Nothing Selected!");
                }
                Autodesk.AutoCAD.Interop.Common.AcadLWPolyline pline = out1 as Autodesk.AutoCAD.Interop.Common.AcadLWPolyline;
                double[] coords = pline.Coordinates as double[];


                for (int i = 0; i < (coords.Length + 1) / 2; ++i)
                {
                    pnt3d pnt = new pnt3d(coords[2 * i], coords[2 * i + 1], 0);
                    VTex  v   = new VTex(pnt, pline.GetBulge(i));

                    returnVertices.Add(v);
                }
            }
            catch
            {
                MessageBox.Show("Error Selecting Entity!");
            }
            return(returnVertices);
        }