ObjectARX中炸开当前图纸中所有存在的块参照
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, 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);
// 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();
}
页:
[1]