I want the object rotate with the center of the object.
when i use rotateX(),it was rotate with the point which is near but not exactly the center of the object.
Because in my project the object must be moved,so i can not set a SimpleVector(x,y,z) to be a rotationpivot.How can i setRotationPivot?
In fact,when i use rotateX(),the object was rotate with file's x-axis,not the object's x-axis.