AnyCAD 是一款基于 C# 的二次开发库，可以用于创建和操作 CAD 文件
读取和显示 DWG 文件using Autodesk.AutoCAD.ApplicationServices;using Autodesk.AutoCAD.DatabaseServices;using Autodesk.AutoCAD.Runtime;[CommandMethod("ReadAndDisplayDWG")]public void ReadAndDisplayDWG(){ // 打开 DWG 文件 Document doc = Application.DocumentManager.Open("path/to/your/file.dwg", false); Database db = doc.Database; // 获取模型空间中的实体 using (Transaction tr = db.TransactionManager.StartTransaction()) { BlockTable bt = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord modelSpace = (BlockTableRecord)tr.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForRead); // 遍历实体并输出信息 foreach (ObjectId id in modelSpace) { Entity ent = (Entity)tr.GetObject(id, OpenMode.ForRead); ed.WriteMessage($"Entity type: {ent.GetType().Name}, Handle: {ent.Handle}\n"); } tr.Commit(); }}using Autodesk.AutoCAD.ApplicationServices;using Autodesk.AutoCAD.DatabaseServices;using Autodesk.AutoCAD.Geometry;using Autodesk.AutoCAD.Runtime;[CommandMethod("CreateNewDWG")]public void CreateNewDWG(){ // 创建新的数据库 Database db = new Database(false, true); // 添加一个线到模型空间 using (Transaction tr = db.TransactionManager.StartTransaction()) { BlockTable bt = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord modelSpace = (BlockTableRecord)tr.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite); Line line = new Line(new Point3d(0, 0, 0), new Point3d(100, 100, 0)); modelSpace.AppendEntity(line); tr.AddNewlyCreatedDBObject(line, true); tr.Commit(); } // 保存新的 DWG 文件 db.SaveAs("path/to/your/new/file.dwg");}using Autodesk.AutoCAD.ApplicationServices;using Autodesk.AutoCAD.DatabaseServices;using Autodesk.AutoCAD.Runtime;[CommandMethod("ModifyDWGEntity")]public void ModifyDWGEntity(){ // 打开 DWG 文件 Document doc = Application.DocumentManager.Open("path/to/your/file.dwg", false); Database db = doc.Database; // 修改模型空间中的第一个实体 using (Transaction tr = db.TransactionManager.StartTransaction()) { BlockTable bt = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord modelSpace = (BlockTableRecord)tr.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForRead); // 获取第一个实体并修改其属性 ObjectId firstEntityId = modelSpace.OfType<ObjectId>().FirstOrDefault(); if (firstEntityId.IsValid) { Entity firstEntity = (Entity)tr.GetObject(firstEntityId, OpenMode.ForWrite); firstEntity.ColorIndex = 2; // 将实体颜色更改为红色 } tr.Commit(); } // 保存修改后的 DWG 文件 db.SaveAs("path/to/your/modified/file.dwg");}这些示例展示了如何使用 AnyCAD 进行基本的 CAD 文件操作。根据需求，你可以在此基础上进行更多的扩展和定制。
