OdDbObjectIterator 多种遍历示例
时间: 2023-06-23 15:50:38 浏览: 54
以下是几种使用OdDbObjectIterator进行遍历的示例:
1. 遍历数据库中的所有对象:
```
OdDbBlockTable* pBlockTable = nullptr;
acdbHostApplicationServices()->workingDatabase()->getBlockTable(pBlockTable, OdDb::kForRead);
OdDbBlockTableIterator* pIter = nullptr;
pBlockTable->newIterator(pIter);
for (; !pIter->done(); pIter->step())
{
OdDbObjectId objId = pIter->objectId();
OdDbObjectPtr pObj = nullptr;
if (objId.isValid() && objId.isReadEnabled())
{
pObj = objId.openObject(OdDb::kForRead);
// 这里可以对对象进行操作
}
}
delete pIter;
pBlockTable->close();
```
2. 遍历数据库中的指定类型对象:
```
OdDbBlockTable* pBlockTable = nullptr;
acdbHostApplicationServices()->workingDatabase()->getBlockTable(pBlockTable, OdDb::kForRead);
OdDbBlockTableRecord* pModelSpace = nullptr;
pBlockTable->getAt(ACDB_MODEL_SPACE, pModelSpace, OdDb::kForRead);
OdDbObjectIteratorPtr pIter = pModelSpace->newIterator(OdDb::kForRead);
for (; !pIter->done(); pIter->step())
{
OdDbEntityPtr pEnt = pIter->entity(OdDb::kForRead);
if (pEnt->isKindOf(OdDbLine::desc()))
{
OdDbLinePtr pLine = pEnt;
// 这里可以对直线对象进行操作
}
}
pModelSpace->close();
pBlockTable->close();
```
3. 遍历数据库中的指定图层对象:
```
OdDbLayerTable* pLayerTable = nullptr;
acdbHostApplicationServices()->workingDatabase()->getLayerTable(pLayerTable, OdDb::kForRead);
OdDbLayerTableRecord* pLayerRecord = nullptr;
pLayerTable->getAt(OdString(L"Layer1"), pLayerRecord, OdDb::kForRead);
OdDbObjectIteratorPtr pIter = pLayerRecord->newIterator(OdDb::kForRead);
for (; !pIter->done(); pIter->step())
{
OdDbEntityPtr pEnt = pIter->entity(OdDb::kForRead);
if (pEnt->isKindOf(OdDbCircle::desc()))
{
OdDbCirclePtr pCircle = pEnt;
// 这里可以对圆形对象进行操作
}
}
pLayerRecord->close();
pLayerTable->close();
```
以上示例仅作为参考,实际使用时需要根据具体的需求进行修改。