def load_shelf_tab(shelf_path):
    # look in to the shelf mel file from user folders
    if os.path.exists(shelf_path):
        try:
            pm.mel.eval('loadNewShelf "%s"' % shelf_path)
        except Exception:
            # probably not in GUI mode
            return
Initialize virtual trackball control.
dataset/ETHPy150Open eoyilmaz/anima/anima/env/mayaEnv/auxiliary.py/load_shelf_tab--crossover with--dataset/ETHPy150Open IEEERobotics/bot/bot/hardware/complex_hardware/transformations.py/Arcball.__init__