id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
179	Hierarchical scene object	gongminmin	gongminmin	Currently the scene object doesn't have a parent-child structure. It makes more difficulties when the scene graph goes complex. A hierarchical scene object is needed here.	enhancement	closed	major	4.5.0	Core-Scene manager	4.3.0	fixed