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
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。