1         /// <summary> 2         /// 创建视口 3         /// </summary> 4         /// <param name="roundLine">模型空间多段线</param> 5         /// <param name="curentLayout">当前布局名称</param> 6         /// <param name="insertPoint">布局空间视口插入点</param> 7         /// <param name="scale">缩放比例</param> 8         private void MakeViewport(Polyline roundLine, string curentLayout, Point3d insertPoint, double scale) 9         {10             Database db = HostApplicationServices.WorkingDatabase;11             using (Transaction tran = db.TransactionManager.StartTransaction())12             {13                 BlockTable bt = tran.GetObject(db.BlockTableId, OpenMode.ForRead) as BlockTable;14                 BlockTableRecord btr = tran.GetObject(bt[BlockTableRecord.PaperSpace], OpenMode.ForWrite) as BlockTableRecord;15                16                 Polyline bound =  roundLine.Clone() as Polyline;17                 bound.Closed = true;18                 Point3d maxPoint = bound.GeometricExtents.MaxPoint;19                 Point3d minPoint = bound.GeometricExtents.MinPoint;20                 Point3d centerPoint = new Point3d((maxPoint.X + minPoint.X) / 2, (maxPoint.Y + minPoint.Y) / 2, 0);21                 bound.TransformBy(Matrix3d.Scaling(scale, centerPoint));22                 bound.TransformBy(Matrix3d.Displacement(centerPoint.GetVectorTo(insertPoint)));23                 btr.AppendEntity(bound);24                 tran.AddNewlyCreatedDBObject(bound, true);25 26                 Viewport vp = new Viewport();27                 btr.AppendEntity(vp);28                 tran.AddNewlyCreatedDBObject(vp, true);29                 vp.NonRectClipEntityId = bound.Id;30 31                 vp.CenterPoint = insertPoint;  //视口插入位置32                 vp.ViewCenter = new Point2d(centerPoint.X, centerPoint.Y); //模型空间中心位置33 34                 vp.ViewHeight = maxPoint.Y - minPoint.Y; //模型空间高度35                 vp.Height = scale * vp.ViewHeight;  //视口高度36                 vp.NonRectClipOn = true;37                 vp.Locked = true;38                 vp.On = true;39                 tran.Commit();40             }41         }