Method child

src/IECoreScene/LinkedScene.cpp:1206–1291

}

SceneInterfacePtr LinkedScene::child( const Name &name, MissingBehaviour missingBehaviour )
{
	if ( missingBehaviour == SceneInterface::CreateIfMissing )
	{
		if ( m_readOnly )
		{
			throw Exception( "No write access to scene file!" );
		}
	}

	if ( m_linkedScene )
	{
		ConstSceneInterfacePtr c = m_linkedScene->child( name, SceneInterface::NullIfMissing );
		if ( c )
		{
			return new LinkedScene( m_mainScene.get(), c.get(), m_linkLocationsData, m_rootLinkDepth, m_readOnly, false, m_timeRemapped );
		}
		if( !m_atLink )
		{
			if( missingBehaviour == SceneInterface::ThrowIfMissing )
			{
				throw Exception( "IECore::LinkedScene::child(): Couldn't find child named " + name.string() );
			}
			else if( missingBehaviour == SceneInterface::NullIfMissing )
			{
				return nullptr;
			}
		}
	}

	if( missingBehaviour == SceneInterface::CreateIfMissing && m_atLink )
	{
		if( !m_mainScene->hasChild( name ) )
		{
			// check for name clashes with the link:
			NameList linkChildNames;
			m_linkedScene->childNames( linkChildNames );

			if( std::find( linkChildNames.begin(), linkChildNames.end(), name ) != linkChildNames.end() )
			{
				throw Exception( "IECore::LinkedScene::child(): Child name " + name.string() + " clashes with a child in the link" );
			}
		}
	}


	SceneInterfacePtr c = m_mainScene->child( name, missingBehaviour );
	if ( !c )
	{
		return nullptr;
	}
	if ( m_readOnly )
	{
		if( c->hasAttribute( fileNameLinkAttribute ) && c->hasAttribute( rootLinkAttribute ) )
		{
			ConstStringDataPtr fileName = runTimeCast< const StringData >( c->readAttribute( fileNameLinkAttribute, 0 ) );
			ConstInternedStringVectorDataPtr root = runTimeCast< const InternedStringVectorData >( c->readAttribute( rootLinkAttribute, 0 ) );