Method setRoot

radiantcore/scenegraph/SceneGraph.cpp:72–104

}

void SceneGraph::setRoot(const IMapRootNodePtr& newRoot)
{
	if (_root == newRoot)
	{
		return;
	}

    _undoEventHandler.disconnect();

	if (_root)
	{
		// "Uninstantiate" the whole scene
		UninstanceSubgraphWalker walker(*this);
		_root->traverse(walker);
	}

	_root = newRoot;

	// Refresh the space partition class
	_spacePartition = std::make_shared<Octree>();

	if (_root)
	{
		// New root not NULL, "instantiate" the whole scene
		GraphPtr self = shared_from_this();
		InstanceSubgraphWalker instanceWalker(self);
		_root->traverse(instanceWalker);

        _undoEventHandler = _root->getUndoSystem().signal_undoEvent().connect(
            sigc::mem_fun(this, &SceneGraph::onUndoEvent)
        );
	}
}

void SceneGraph::onUndoEvent(IUndoSystem::EventType type, const std::string& operationName)
{