fixed bug of getChildren by class
fixed bug of getChildren by class

jThreeJS/jThree,jThreeJS/jThree,GrimoireGL/GrimoireJS,jThreeJS/jThree,GrimoireGL/GrimoireJS,jThreeJS/jThree,GrimoireGL/GrimoireJS,GrimoireGL/GrimoireJS