Set root object for scene hierarchy. Root object coordinate system becomes scene global coordinate system.

为阶层式场景设置根对象，根对象的坐标系会成为场景全局坐标系。

youdao

Set root object for scene hierarchy. Root object coordinate system becomes scene global coordinate system.

为阶层式场景设置根对象，根对象的坐标系会成为场景全局坐标系。

youdao