dri-richard

function build_hierarchy(root)
	local node_and_descendants = {}
	local node_info = {}
	local all_nodes = gui.get_tree(gui.get_node(root))

	-- Build an array of (node + its descendants) for each node
	for node_id,_ in pairs(all_nodes) do
		local nodes	
		if node_id == root then
			nodes = all_nodes -- avoid calling get_tree again for the root node