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ObjectARX中炸开当前图纸中所有存在的块参照,你可以遍历模型空间以及布局空间中的所有实体,并对其中的块参照执行炸开操作。下面是一个简化的示例代码片段:
- #include "dbmain.h"
- #include "acdb.h"
- #include "aced.h"
- void ExplodeAllBlocksInCurrentDrawing()
- {
- // 获取当前数据库
- AcDbDatabase* db = acdbHostApplicationServices()->workingDatabase();
- // 遍历模型空间
- AcDbBlockTable* blockTable;
- Acad::ErrorStatus es = db->getSymbolTable(blockTable, AcDb::kForRead);
- if (es == Acad::eOk)
- {
- AcDbBlockTableRecord* modelSpace;
- es = blockTable->getAt(ACDB采用MODEL采用SPACE, modelSpace, AcDb::kForWrite);
- if (es == Acad::eOk)
- {
- AcDbObjectIdArray objectsInModelSpace;
- modelSpace->getAllObjects(objectsInModelSpace, AcDb::kForWrite);
- for (int i = 0; i < objectsInModelSpace.length(); ++i)
- {
- AcDbObject* pObj;
- es = acdbOpenAcDbObject(pObj, objectsInModelSpace[i], AcDb::kForWrite);
- if (es == Acad::eOk && pObj->isKindOf(AcDbBlockReference::desc()))
- {
- AcDbBlockReference* blkRef = AcDbBlockReference::cast(pObj);
- ExplodeNestedBlocks(blkRef, false); // 调用上面定义的炸开嵌套块的函数
- }
- pObj->close();
- }
- modelSpace->close();
- }
- blockTable->close();
- }
- // 如果需要,同样遍历布局空间并进行相同操作
- // ...
- // 提交事务处理
- acdbTransactionManager->endTransaction();
- }
- // 使用之前定义的ExplodeNestedBlocks函数
- void ExplodeNestedBlocks(AcDbBlockReference* blkRef, bool keepOutermost = true)
- {
- AcDbVoidPtrArray entitiesToExplode;
- AcDbBlockTableRecord* blkRec = nullptr;
- // 遍历块参照的所有图形对象
- blkRef->explode(entitiesToExplode, Adesk::kTrue); // 参数为true表示不删除原块参照
- for (int i = 0; i < entitiesToExplode.length(); ++i)
- {
- AcDbEntity* ent = static采用cast<AcDbEntity*>(entitiesToExplode[i]);
- // 如果是嵌套块参照,则进一步炸开
- if (ent->isKindOf(AcDbBlockReference::desc()))
- {
- AcDbBlockReference* nestedBlkRef = AcDbBlockReference::cast(ent);
- ExplodeNestedBlocks(nestedBlkRef, false); // 内部块不保留,继续递归炸开
- }
- else
- {
- // 其他非块参照实体直接添加到当前图层
- AcDbBlockTableRecord* currentSpace = AcDbBlockTableRecord::cast(blkRef->owner());
- Acad::ErrorStatus es = currentSpace->appendAcDbEntity(ent);
- if (es != Acad::eOk)
- {
- acutPrintf("Failed to append entity to the current space.");
- }
- ent->close();
- }
- }
- // 如果不是要求保留最外层块参照,此时可以删除原始块参照
- if (!keepOutermost)
- {
- blkRef->erase();
- }
- else
- {
- // 更新最外层块参照的位置等必要属性
- // ...
- }
- // 清理临时数组
- entitiesToExplode.setLogicalLength(0);
- }
-
- // 在主程序入口处调用
- void main()
- {
- acedInitCmds();
- ExplodeAllBlocksInCurrentDrawing();
- }
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