C# CAD二次開發（三） 繪制多段線

/// <summary>
        /// 繪制斷面方向     多段線
        /// </summary>
        /// <param name="polylineStartPoint"></param>
        /// <param name="polylineEndPoint"></param>
        /// <param name="lintypeId"></param>
        public Line DrawDMFX(Point3d polylineStartPoint, Point3d polylineEndPoint, ObjectId lintypeId)
        {
            Editor ed = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
            Database db = Autodesk.AutoCAD.DatabaseServices.HostApplicationServices.WorkingDatabase;
            using (Transaction trans = db.TransactionManager.StartTransaction())
            {
                //獲取塊表
                BlockTable bt = (BlockTable)(trans.GetObject(db.BlockTableId, OpenMode.ForRead));

                //獲取塊表記錄-模型空間，三維坐標等
                BlockTableRecord btr = (BlockTableRecord)trans.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite);

                Line l = new Line(polylineStartPoint, polylineEndPoint);
                l.LinetypeId = lintypeId;
                l.Layer = "dmx";
                l.ColorIndex = 7;

                //Polyline p = new Polyline();
                //p.LinetypeId = lintypeId;
                //p.StartPoint = polylineStartPoint;
                //p.EndPoint = polylineEndPoint;
                //p.Layer = "dmx";
                //p.ColorIndex = 256;

                btr.AppendEntity(l);
                trans.AddNewlyCreatedDBObject(l, true);
                trans.Commit();
                return l;
            }

        }

 

 /// <summary>
        /// 繪制斷面方向 3維多段線
        /// </summary>
        /// <param name="type"></param>
        /// <param name="polylineStartPoint"></param>
        /// <param name="polylineEndPoint"></param>
        /// <param name="lintypeId"></param>
        /// <returns></returns>
        public void DrawDMFX(Poly3dType type, Point3d polylineStartPoint, Point3d polylineEndPoint, ObjectId lintypeId)
        {
            Editor ed = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
            Database db = Autodesk.AutoCAD.DatabaseServices.HostApplicationServices.WorkingDatabase;
            using (Transaction trans = db.TransactionManager.StartTransaction())
            {
                //獲取塊表
                BlockTable bt = (BlockTable)(trans.GetObject(db.BlockTableId, OpenMode.ForRead));

                //獲取塊表記錄-模型空間，三維坐標等
                BlockTableRecord btr = (BlockTableRecord)trans.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite);


                //繪制多段線
                type = Poly3dType.SimplePoly;
                Point3d[] p3d = new Point3d[2] { polylineStartPoint, polylineEndPoint };
                Point3dCollection vertex = new Point3dCollection(p3d);
                Polyline3d p = new Polyline3d(type, vertex, false);
                
                //Polyline p = new Polyline();
                //設置線型
                p.LinetypeId = lintypeId;

                //設置顏色，圖層等 
                p.ColorIndex = 7;
                p.Layer = "dmx";
                btr.AppendEntity(p);
                trans.AddNewlyCreatedDBObject(p, true);
                trans.Commit();

            }

        }