Function xnUpdateGraph

Source/OpenNI/XnOpenNI.cpp:2406–2433

Updates the entire graph (if pSubGraph is NULL), or just the sub graph starting from the pSubGraph node

// Updates the entire graph (if pSubGraph is NULL), or just the sub graph starting from the pSubGraph node
static XnStatus xnUpdateGraph(XnContext* pContext, const XnNodeInfo* pSubGraph)
{
	XnStatus nRetVal = XN_STATUS_OK;

	// mark all current nodes' data as "old"
	xnResetNewDataFlag(pContext);

	// mark all nodes as not-visited
	xnResetVisitState(pContext);

	// now start the update (each updated node will be marked as visited)
	if (pSubGraph != NULL)
	{
		nRetVal = xnUpdateTreeImpl(pSubGraph);
		XN_IS_STATUS_OK(nRetVal);
	}
	else
	{
		for (XnNodesMap::Iterator it = pContext->nodesMap.Begin(); it != pContext->nodesMap.End(); ++it)
		{
			XnNodeInfo* pNodeInfo = it->Value()->pNodeInfo;
			nRetVal = xnUpdateTreeImpl(pNodeInfo);
			XN_IS_STATUS_OK(nRetVal);
		}
	}

	return (XN_STATUS_OK);
}

XnBool xnDidNodeAdvanced(XnNodeHandle hNode)
{