c# - 将预先存在的 AutoCAD 图形插入当前图形

Question

我正在尝试以编程方式将 block 从预先存在的图形插入到当前正在运行插件的图形中。为此，我在 C#.NET 窗体上有一个按钮调用以下方法

public void MakeAndInsertObject() //Method to add all windows and doors templates to drawing database for use later
{
    Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument; //Stores the active document
    Editor ed = doc.Editor; //Stores the document's editor
    Database dtb = ed.Document.Database; //Stores the database from the editor

    Transaction tr = dtb.TransactionManager.StartTransaction(); //Start a transaction with the document's database
    DocumentLock docLock = doc.LockDocument();

    using (tr)    
    using (docLock)
    {
        BlockTableRecord btr = (BlockTableRecord)tr.GetObject(dtb.CurrentSpaceId, OpenMode.ForWrite); //Opens the block table record so you can write to it
        BlockTableRecord newBlockDef = new BlockTableRecord(); //Creates a new record in the block table
        BlockTable blockTable = (BlockTable)tr.GetObject(dtb.BlockTableId, OpenMode.ForWrite); //Opens the block table so it can be written to
        //Pointing new block to correct drawing file
        newBlockDef.Name = "Door";
        newBlockDef.PathName = "C:/Users/Administrator/Documents/All Code/clearspan-autocad-tools-development/Templates/locks/DOOR.dwg";
        blockTable.Add(newBlockDef); //Adds the block table record to the block table
        BlockReference newBlock = new BlockReference(new Point3d(0, 0, 0), newBlockDef.ObjectId); //Insert a block reference with the newly created block
        btr.AppendEntity(newBlock); //Inserts the block into the current space (Model or Paper) via the block table record
        //Updates the Transaction with all new database objects
        tr.AddNewlyCreatedDBObject(newBlockDef, true);
        tr.AddNewlyCreatedDBObject(newBlock, true);
        tr.Commit(); //Applies all changes made as part of the current transaction
        tr.Dispose();
    }
}

代码完全执行，但我的 DOOR.dwg 文件中的 block 没有出现在位置 (0, 0, 0)，我不知道为什么没有出现

Answer 1

我从 Keen Walmsley 中截取了一个片段并将其编辑为不那么繁琐且更清晰。这是非常基本的。您应该阅读 Keen 的一些东西，这些东西非常好，而且他的笔记非常具有描述性。请参阅下面的代码了解用法。

public void ImportBlocks()
{
    DocumentCollection dm =
    Application.DocumentManager;
    Editor ed = dm.MdiActiveDocument.Editor;
    Database destDb = dm.MdiActiveDocument.Database;
    Database sourceDb = new Database(false, true);
    try
    {
        // Get name of DWG from which to copy blocks
        var sourceFileName = ed.GetString("\nEnter the path of the source drawing: ");

        // Read the DWG into a side database
        sourceDb.ReadDwgFile(sourceFileName.StringResult, System.IO.FileShare.Read, true, "");

        // Create a variable to store the list of block identifiers
        ObjectIdCollection blockIds = new ObjectIdCollection();

        var tm = sourceDb.TransactionManager;

        using (var myT = tm.StartOpenCloseTransaction())
        {
            // Open the block table
            BlockTable bt = (BlockTable)myT.GetObject(sourceDb.BlockTableId, OpenMode.ForRead, false);

            // Check each block in the block table
            foreach (ObjectId btrId in bt)
            {
                BlockTableRecord btr =
                (BlockTableRecord)myT.GetObject(btrId, OpenMode.ForRead, false);

                // Only add named & non-layout blocks to the copy list
                if (!btr.IsAnonymous && !btr.IsLayout)
                    blockIds.Add(btrId);
                btr.Dispose();
            }
        }
        // Copy blocks from source to destination database
        var mapping = new IdMapping();
        sourceDb.WblockCloneObjects(blockIds,
            destDb.BlockTableId,
            mapping,
            DuplicateRecordCloning.Replace,
            false);
    }
    catch(Autodesk.AutoCAD.Runtime.Exception ex)
    {
        ed.WriteMessage("\nError during copy: " + ex.Message);
    }
    sourceDb.Dispose();
}

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出于好奇，如果有人开发了用于 AutoCAD 的 python API，您会使用它吗？或者试一试？