C# AutoCAD 选择图中的块获取其位置后,将其替换成选择的外部块,其他和他名称相同但位置不同的块不替换完整代码
时间: 2024-02-01 22:14:14 浏览: 24
以下是一个示例代码,可以实现选择图中的块获取其位置后,将其替换成选择的外部块,其他和它名称相同但位置不同的块不替换:
```csharp
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
[assembly: CommandClass(typeof(BlockReplaceCommand))]
public class BlockReplaceCommand
{
[CommandMethod("BR")]
public void BlockReplace()
{
Document doc = Application.DocumentManager.MdiActiveDocument;
Editor ed = doc.Editor;
// 选择要替换的块
PromptEntityOptions peo1 = new PromptEntityOptions("\n选择要替换的块:");
peo1.SetRejectMessage("\n请选择块!");
peo1.AddAllowedClass(typeof(BlockReference), true);
PromptEntityResult per1 = ed.GetEntity(peo1);
if (per1.Status != PromptStatus.OK)
return;
ObjectId blockId = per1.ObjectId;
// 获取要替换的块的位置
Transaction tr = doc.TransactionManager.StartTransaction();
using (tr)
{
BlockReference blockRef = tr.GetObject(blockId, OpenMode.ForRead) as BlockReference;
Point3d blockPosition = blockRef.Position;
// 打开另一个图形并选择要插入的块
DocumentCollection acDocMgr = Application.DocumentManager;
Document acNewDoc = acDocMgr.Add("");
acNewDoc.SendStringToExecute("_INSERT ", true, false, true);
PromptResult pr = acNewDoc.Editor.GetString("\n请输入块名称:");
if (pr.Status != PromptStatus.OK)
return;
string blockName = pr.StringResult;
PromptPointResult ppr = acNewDoc.Editor.GetPoint("\n请选择插入点:");
if (ppr.Status != PromptStatus.OK)
return;
Point3d insertPoint = ppr.Value;
Database acCurDb = acNewDoc.Database;
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
BlockTable acBlkTbl;
acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId, OpenMode.ForRead) as BlockTable;
if (!acBlkTbl.Has(blockName))
return;
BlockTableRecord acBlkTblRec;
acBlkTblRec = acTrans.GetObject(acBlkTbl[blockName], OpenMode.ForRead) as BlockTableRecord;
BlockReference acBlkRef = new BlockReference(insertPoint, acBlkTbl[blockName]);
BlockTableRecord acCurSpaceBlkTblRec;
acCurSpaceBlkTblRec = acTrans.GetObject(acCurDb.CurrentSpaceId, OpenMode.ForWrite) as BlockTableRecord;
acCurSpaceBlkTblRec.AppendEntity(acBlkRef);
acTrans.AddNewlyCreatedDBObject(acBlkRef, true);
acTrans.Commit();
}
// 替换块
BlockTableRecord btr = (BlockTableRecord)tr.GetObject(blockRef.BlockTableRecord, OpenMode.ForRead);
foreach (ObjectId id in btr)
{
if (id != blockId && id.ObjectClass == RXClass.GetClass(typeof(BlockReference)))
{
BlockReference br = (BlockReference)tr.GetObject(id, OpenMode.ForRead);
if (br.Name == blockRef.Name && br.Position == blockPosition)
{
BlockReference newBr = (BlockReference)acNewDoc.Database.BlockTableId.GetObject(acNewDoc.Database.CurrentSpaceId, OpenMode.ForRead, false);
br.UpgradeOpen();
br.CopyFrom(newBr);
br.DowngradeOpen();
}
}
}
tr.Commit();
}
}
}
```
该代码的思路是:
1. 首先让用户选择要替换的块。
2. 获取该块的位置。
3. 打开另一个图形,并让用户选择要插入的块和插入点。
4. 将选择的块插入到另一个图形中。
5. 遍历要替换块所在块表记录中的所有块,如果名称相同且位置相同,则替换成新插入的块。