1. 单行文字的添加

第一步： 首先在CAD中新增中文样式
输入ST命令：

第二步：代码开发

 /// <summary>/// 添加文本信息/// </summary>[CommandMethod("AddText")]public void AddText(){var doc = Application.DocumentManager.MdiActiveDocument;var docDatabase = doc.Database;using (var trans = docDatabase.TransactionManager.StartTransaction()){//打开块表TextStyleTable textStyleTable = (TextStyleTable)trans.GetObject(docDatabase.TextStyleTableId, OpenMode.ForRead);var objectId = textStyleTable["chinese"];DBText text = new DBText{TextString = "wuk测试添加单行文本",//文本坐标Position   = new Point3d(500,500,0),Height = 500,//宽度因子WidthFactor = 0.8,TextStyleId = objectId};docDatabase.AddEnityToModelSpace(text);trans.Commit();}}

效果如下：

2. 修改和克隆图形

 /// <summary>/// 添加文本信息/// </summary>[CommandMethod("EditEntity")]public void EditEntity(){var doc = Application.DocumentManager.MdiActiveDocument;var docDatabase = doc.Database;var selectEntity = Selected.selectEntities()[0];if (selectEntity is Circle){using (var trans = docDatabase.TransactionManager.StartTransaction()){//修改对象Circle circle = (Circle)selectEntity.ObjectId.GetObject(OpenMode.ForWrite);circle.Radius = 600;circle.Color = Color.FromRgb(255, 0, 0);trans.Commit();}  }// 克隆对象，原对象不变if (selectEntity is Circle myCircle){var circle = myCircle.Clone() as Circle;if (circle != null){circle.Radius = 500;circle.Color = Color.FromRgb(255, 0, 0);//修改坐标circle.Center = new Point3d(100, 100, 100);docDatabase.AddEnityToModelSpace(circle);}}}

图示结果：

3. 图形形变

/// <summary>/// 图形形变/// </summary>[CommandMethod("EditEntityTest")]public void EditEntityTest(){var doc = Application.DocumentManager.MdiActiveDocument;var docDatabase = doc.Database;var selectEntity = Selected.selectEntities()[0];using (var trans = docDatabase.TransactionManager.StartTransaction()){//修改对象Entity  entity = (Entity)selectEntity.ObjectId.GetObject(OpenMode.ForWrite);Matrix3d matrix3d;//平移// matrix3d = Matrix3d.Displacement(new Vector3d(200,200,0));// entity.TransformBy(matrix3d);// //旋转 参数1：旋转角度 2：旋转轴心(负则反方向顺时针) 3：旋转中心// matrix3d = Matrix3d.Rotation(Math.PI/6,Vector3d.ZAxis,Point3d.Origin);// //缩放 参数1：缩放比例 2：缩放中心// matrix3d = Matrix3d.Scaling(2,new Point3d(50,50,0));// 镜像 两种方式matrix3d = Matrix3d.Mirroring(new Plane(Point3d.Origin,new Point3d(0,1,0),new Point3d(0,0,1)));matrix3d = Matrix3d.Mirroring(new Line3d(Point3d.Origin, new Point3d(0, 1, 0)));entity.TransformBy(matrix3d);trans.Commit();} }

旋转

4. 块参照

/// <summary>/// 图形形变/// </summary>[CommandMethod("EditEntityTest1")]public void EditEntityTest1(){var doc = Application.DocumentManager.MdiActiveDocument;var docDatabase = doc.Database;var block = Selected.selectEntities()[0];if (block is BlockReference blockReference){using (var trans = docDatabase.TransactionManager.StartTransaction()){// String name = blockReference.BlockName;// var ro = blockReference.Rotation;// var factors = blockReference.ScaleFactors;// var position = blockReference.Position;//修改块参照数据BlockReference blockR = (BlockReference)block.ObjectId.GetObject(OpenMode.ForWrite);blockR.Rotation = Math.PI / 6;blockR.ScaleFactors = new Scale3d(2, 2, 2);trans.Commit();} }}